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(|(provider_name, 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((provider_name, entry.range, entry.diagnostic.group_id))
2866 } else {
2867 None
2868 }
2869 });
2870
2871 if let Some((provider_name, primary_range, group_id)) = next_group {
2872 self.activate_diagnostics(provider_name, 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(
2927 &mut self,
2928 provider_name: &str,
2929 group_id: usize,
2930 cx: &mut ViewContext<Self>,
2931 ) {
2932 self.dismiss_diagnostics(cx);
2933 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2934 let buffer = self.buffer.read(cx).snapshot(cx);
2935
2936 let mut primary_range = None;
2937 let mut primary_message = None;
2938 let mut group_end = Point::zero();
2939 let diagnostic_group = buffer
2940 .diagnostic_group::<Point>(provider_name, group_id)
2941 .map(|entry| {
2942 if entry.range.end > group_end {
2943 group_end = entry.range.end;
2944 }
2945 if entry.diagnostic.is_primary {
2946 primary_range = Some(entry.range.clone());
2947 primary_message = Some(entry.diagnostic.message.clone());
2948 }
2949 entry
2950 })
2951 .collect::<Vec<_>>();
2952 let primary_range = primary_range.unwrap();
2953 let primary_message = primary_message.unwrap();
2954 let primary_range =
2955 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2956
2957 let blocks = display_map
2958 .insert_blocks(
2959 diagnostic_group.iter().map(|entry| {
2960 let build_settings = self.build_settings.clone();
2961 let diagnostic = entry.diagnostic.clone();
2962 let message_height = diagnostic.message.lines().count() as u8;
2963
2964 BlockProperties {
2965 position: buffer.anchor_after(entry.range.start),
2966 height: message_height,
2967 render: diagnostic_block_renderer(diagnostic, true, build_settings),
2968 disposition: BlockDisposition::Below,
2969 }
2970 }),
2971 cx,
2972 )
2973 .into_iter()
2974 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2975 .collect();
2976
2977 Some(ActiveDiagnosticGroup {
2978 primary_range,
2979 primary_message,
2980 blocks,
2981 is_valid: true,
2982 })
2983 });
2984 }
2985
2986 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2987 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2988 self.display_map.update(cx, |display_map, cx| {
2989 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2990 });
2991 cx.notify();
2992 }
2993 }
2994
2995 fn build_columnar_selection(
2996 &mut self,
2997 display_map: &DisplaySnapshot,
2998 row: u32,
2999 columns: &Range<u32>,
3000 reversed: bool,
3001 ) -> Option<Selection<Point>> {
3002 let is_empty = columns.start == columns.end;
3003 let line_len = display_map.line_len(row);
3004 if columns.start < line_len || (is_empty && columns.start == line_len) {
3005 let start = DisplayPoint::new(row, columns.start);
3006 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3007 Some(Selection {
3008 id: post_inc(&mut self.next_selection_id),
3009 start: start.to_point(display_map),
3010 end: end.to_point(display_map),
3011 reversed,
3012 goal: SelectionGoal::ColumnRange {
3013 start: columns.start,
3014 end: columns.end,
3015 },
3016 })
3017 } else {
3018 None
3019 }
3020 }
3021
3022 pub fn local_selections_in_range(
3023 &self,
3024 range: Range<Anchor>,
3025 display_map: &DisplaySnapshot,
3026 ) -> Vec<Selection<Point>> {
3027 let buffer = &display_map.buffer_snapshot;
3028
3029 let start_ix = match self
3030 .selections
3031 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3032 {
3033 Ok(ix) | Err(ix) => ix,
3034 };
3035 let end_ix = match self
3036 .selections
3037 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3038 {
3039 Ok(ix) => ix + 1,
3040 Err(ix) => ix,
3041 };
3042
3043 fn point_selection(
3044 selection: &Selection<Anchor>,
3045 buffer: &MultiBufferSnapshot,
3046 ) -> Selection<Point> {
3047 let start = selection.start.to_point(&buffer);
3048 let end = selection.end.to_point(&buffer);
3049 Selection {
3050 id: selection.id,
3051 start,
3052 end,
3053 reversed: selection.reversed,
3054 goal: selection.goal,
3055 }
3056 }
3057
3058 self.selections[start_ix..end_ix]
3059 .iter()
3060 .chain(
3061 self.pending_selection
3062 .as_ref()
3063 .map(|pending| &pending.selection),
3064 )
3065 .map(|s| point_selection(s, &buffer))
3066 .collect()
3067 }
3068
3069 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3070 where
3071 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3072 {
3073 let buffer = self.buffer.read(cx).snapshot(cx);
3074 let mut selections = self
3075 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3076 .peekable();
3077
3078 let mut pending_selection = self.pending_selection::<D>(&buffer);
3079
3080 iter::from_fn(move || {
3081 if let Some(pending) = pending_selection.as_mut() {
3082 while let Some(next_selection) = selections.peek() {
3083 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3084 let next_selection = selections.next().unwrap();
3085 if next_selection.start < pending.start {
3086 pending.start = next_selection.start;
3087 }
3088 if next_selection.end > pending.end {
3089 pending.end = next_selection.end;
3090 }
3091 } else if next_selection.end < pending.start {
3092 return selections.next();
3093 } else {
3094 break;
3095 }
3096 }
3097
3098 pending_selection.take()
3099 } else {
3100 selections.next()
3101 }
3102 })
3103 .collect()
3104 }
3105
3106 pub fn local_anchor_selections(&self) -> &Arc<[Selection<Anchor>]> {
3107 &self.selections
3108 }
3109
3110 fn resolve_selections<'a, D, I>(
3111 &self,
3112 selections: I,
3113 snapshot: &MultiBufferSnapshot,
3114 ) -> impl 'a + Iterator<Item = Selection<D>>
3115 where
3116 D: TextDimension + Ord + Sub<D, Output = D>,
3117 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3118 {
3119 let (to_summarize, selections) = selections.into_iter().tee();
3120 let mut summaries = snapshot
3121 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3122 .into_iter();
3123 selections.map(move |s| Selection {
3124 id: s.id,
3125 start: summaries.next().unwrap(),
3126 end: summaries.next().unwrap(),
3127 reversed: s.reversed,
3128 goal: s.goal,
3129 })
3130 }
3131
3132 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3133 &self,
3134 snapshot: &MultiBufferSnapshot,
3135 ) -> Option<Selection<D>> {
3136 self.pending_selection
3137 .as_ref()
3138 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3139 }
3140
3141 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3142 &self,
3143 selection: &Selection<Anchor>,
3144 buffer: &MultiBufferSnapshot,
3145 ) -> Selection<D> {
3146 Selection {
3147 id: selection.id,
3148 start: selection.start.summary::<D>(&buffer),
3149 end: selection.end.summary::<D>(&buffer),
3150 reversed: selection.reversed,
3151 goal: selection.goal,
3152 }
3153 }
3154
3155 fn selection_count<'a>(&self) -> usize {
3156 let mut count = self.selections.len();
3157 if self.pending_selection.is_some() {
3158 count += 1;
3159 }
3160 count
3161 }
3162
3163 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3164 &self,
3165 snapshot: &MultiBufferSnapshot,
3166 ) -> Selection<D> {
3167 self.selections
3168 .iter()
3169 .min_by_key(|s| s.id)
3170 .map(|selection| self.resolve_selection(selection, snapshot))
3171 .or_else(|| self.pending_selection(snapshot))
3172 .unwrap()
3173 }
3174
3175 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3176 &self,
3177 snapshot: &MultiBufferSnapshot,
3178 ) -> Selection<D> {
3179 self.pending_selection(snapshot)
3180 .or_else(|| {
3181 self.selections
3182 .iter()
3183 .max_by_key(|s| s.id)
3184 .map(|selection| self.resolve_selection(selection, snapshot))
3185 })
3186 .unwrap()
3187 }
3188
3189 pub fn update_selections<T>(
3190 &mut self,
3191 mut selections: Vec<Selection<T>>,
3192 autoscroll: Option<Autoscroll>,
3193 cx: &mut ViewContext<Self>,
3194 ) where
3195 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3196 {
3197 // Merge overlapping selections.
3198 let buffer = self.buffer.read(cx).snapshot(cx);
3199 let mut i = 1;
3200 while i < selections.len() {
3201 if selections[i - 1].end >= selections[i].start {
3202 let removed = selections.remove(i);
3203 if removed.start < selections[i - 1].start {
3204 selections[i - 1].start = removed.start;
3205 }
3206 if removed.end > selections[i - 1].end {
3207 selections[i - 1].end = removed.end;
3208 }
3209 } else {
3210 i += 1;
3211 }
3212 }
3213
3214 self.pending_selection = None;
3215 self.add_selections_state = None;
3216 self.select_next_state = None;
3217 self.select_larger_syntax_node_stack.clear();
3218 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3219 let all_selections_inside_autoclose_ranges =
3220 if selections.len() == autoclose_pair.ranges.len() {
3221 selections
3222 .iter()
3223 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3224 .all(|(selection, autoclose_range)| {
3225 let head = selection.head().to_point(&buffer);
3226 autoclose_range.start <= head && autoclose_range.end >= head
3227 })
3228 } else {
3229 false
3230 };
3231
3232 if all_selections_inside_autoclose_ranges {
3233 break;
3234 } else {
3235 self.autoclose_stack.pop();
3236 }
3237 }
3238
3239 if let Some(autoscroll) = autoscroll {
3240 self.request_autoscroll(autoscroll, cx);
3241 }
3242 self.pause_cursor_blinking(cx);
3243
3244 self.set_selections(
3245 Arc::from_iter(selections.into_iter().map(|selection| {
3246 let end_bias = if selection.end > selection.start {
3247 Bias::Left
3248 } else {
3249 Bias::Right
3250 };
3251 Selection {
3252 id: selection.id,
3253 start: buffer.anchor_after(selection.start),
3254 end: buffer.anchor_at(selection.end, end_bias),
3255 reversed: selection.reversed,
3256 goal: selection.goal,
3257 }
3258 })),
3259 cx,
3260 );
3261 }
3262
3263 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3264 self.selections = selections;
3265 self.buffer.update(cx, |buffer, cx| {
3266 buffer.set_active_selections(&self.selections, cx)
3267 });
3268 }
3269
3270 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3271 self.autoscroll_request = Some(autoscroll);
3272 cx.notify();
3273 }
3274
3275 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3276 self.start_transaction_at(Instant::now(), cx);
3277 }
3278
3279 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3280 self.end_selection(cx);
3281 if let Some(tx_id) = self
3282 .buffer
3283 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3284 {
3285 self.selection_history
3286 .insert(tx_id, (self.selections.clone(), None));
3287 }
3288 }
3289
3290 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3291 self.end_transaction_at(Instant::now(), cx);
3292 }
3293
3294 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3295 if let Some(tx_id) = self
3296 .buffer
3297 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3298 {
3299 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3300 }
3301 }
3302
3303 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3304 log::info!("Editor::page_up");
3305 }
3306
3307 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3308 log::info!("Editor::page_down");
3309 }
3310
3311 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3312 let mut fold_ranges = Vec::new();
3313
3314 let selections = self.local_selections::<Point>(cx);
3315 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3316 for selection in selections {
3317 let range = selection.display_range(&display_map).sorted();
3318 let buffer_start_row = range.start.to_point(&display_map).row;
3319
3320 for row in (0..=range.end.row()).rev() {
3321 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3322 let fold_range = self.foldable_range_for_line(&display_map, row);
3323 if fold_range.end.row >= buffer_start_row {
3324 fold_ranges.push(fold_range);
3325 if row <= range.start.row() {
3326 break;
3327 }
3328 }
3329 }
3330 }
3331 }
3332
3333 self.fold_ranges(fold_ranges, cx);
3334 }
3335
3336 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3337 let selections = self.local_selections::<Point>(cx);
3338 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3339 let buffer = &display_map.buffer_snapshot;
3340 let ranges = selections
3341 .iter()
3342 .map(|s| {
3343 let range = s.display_range(&display_map).sorted();
3344 let mut start = range.start.to_point(&display_map);
3345 let mut end = range.end.to_point(&display_map);
3346 start.column = 0;
3347 end.column = buffer.line_len(end.row);
3348 start..end
3349 })
3350 .collect::<Vec<_>>();
3351 self.unfold_ranges(ranges, cx);
3352 }
3353
3354 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3355 let max_point = display_map.max_point();
3356 if display_row >= max_point.row() {
3357 false
3358 } else {
3359 let (start_indent, is_blank) = display_map.line_indent(display_row);
3360 if is_blank {
3361 false
3362 } else {
3363 for display_row in display_row + 1..=max_point.row() {
3364 let (indent, is_blank) = display_map.line_indent(display_row);
3365 if !is_blank {
3366 return indent > start_indent;
3367 }
3368 }
3369 false
3370 }
3371 }
3372 }
3373
3374 fn foldable_range_for_line(
3375 &self,
3376 display_map: &DisplaySnapshot,
3377 start_row: u32,
3378 ) -> Range<Point> {
3379 let max_point = display_map.max_point();
3380
3381 let (start_indent, _) = display_map.line_indent(start_row);
3382 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3383 let mut end = None;
3384 for row in start_row + 1..=max_point.row() {
3385 let (indent, is_blank) = display_map.line_indent(row);
3386 if !is_blank && indent <= start_indent {
3387 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3388 break;
3389 }
3390 }
3391
3392 let end = end.unwrap_or(max_point);
3393 return start.to_point(display_map)..end.to_point(display_map);
3394 }
3395
3396 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3397 let selections = self.local_selections::<Point>(cx);
3398 let ranges = selections.into_iter().map(|s| s.start..s.end);
3399 self.fold_ranges(ranges, cx);
3400 }
3401
3402 fn fold_ranges<T: ToOffset>(
3403 &mut self,
3404 ranges: impl IntoIterator<Item = Range<T>>,
3405 cx: &mut ViewContext<Self>,
3406 ) {
3407 let mut ranges = ranges.into_iter().peekable();
3408 if ranges.peek().is_some() {
3409 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3410 self.request_autoscroll(Autoscroll::Fit, cx);
3411 cx.notify();
3412 }
3413 }
3414
3415 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3416 if !ranges.is_empty() {
3417 self.display_map
3418 .update(cx, |map, cx| map.unfold(ranges, cx));
3419 self.request_autoscroll(Autoscroll::Fit, cx);
3420 cx.notify();
3421 }
3422 }
3423
3424 pub fn insert_blocks(
3425 &mut self,
3426 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3427 cx: &mut ViewContext<Self>,
3428 ) -> Vec<BlockId> {
3429 let blocks = self
3430 .display_map
3431 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3432 self.request_autoscroll(Autoscroll::Fit, cx);
3433 blocks
3434 }
3435
3436 pub fn replace_blocks(
3437 &mut self,
3438 blocks: HashMap<BlockId, RenderBlock>,
3439 cx: &mut ViewContext<Self>,
3440 ) {
3441 self.display_map
3442 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3443 self.request_autoscroll(Autoscroll::Fit, cx);
3444 }
3445
3446 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3447 self.display_map.update(cx, |display_map, cx| {
3448 display_map.remove_blocks(block_ids, cx)
3449 });
3450 }
3451
3452 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3453 self.display_map
3454 .update(cx, |map, cx| map.snapshot(cx))
3455 .longest_row()
3456 }
3457
3458 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3459 self.display_map
3460 .update(cx, |map, cx| map.snapshot(cx))
3461 .max_point()
3462 }
3463
3464 pub fn text(&self, cx: &AppContext) -> String {
3465 self.buffer.read(cx).read(cx).text()
3466 }
3467
3468 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3469 self.display_map
3470 .update(cx, |map, cx| map.snapshot(cx))
3471 .text()
3472 }
3473
3474 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3475 self.display_map
3476 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3477 }
3478
3479 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3480 self.highlighted_row = row;
3481 }
3482
3483 pub fn highlighted_row(&mut self) -> Option<u32> {
3484 self.highlighted_row
3485 }
3486
3487 fn next_blink_epoch(&mut self) -> usize {
3488 self.blink_epoch += 1;
3489 self.blink_epoch
3490 }
3491
3492 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3493 self.show_local_cursors = true;
3494 cx.notify();
3495
3496 let epoch = self.next_blink_epoch();
3497 cx.spawn(|this, mut cx| {
3498 let this = this.downgrade();
3499 async move {
3500 Timer::after(CURSOR_BLINK_INTERVAL).await;
3501 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3502 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3503 }
3504 }
3505 })
3506 .detach();
3507 }
3508
3509 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3510 if epoch == self.blink_epoch {
3511 self.blinking_paused = false;
3512 self.blink_cursors(epoch, cx);
3513 }
3514 }
3515
3516 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3517 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3518 self.show_local_cursors = !self.show_local_cursors;
3519 cx.notify();
3520
3521 let epoch = self.next_blink_epoch();
3522 cx.spawn(|this, mut cx| {
3523 let this = this.downgrade();
3524 async move {
3525 Timer::after(CURSOR_BLINK_INTERVAL).await;
3526 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3527 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3528 }
3529 }
3530 })
3531 .detach();
3532 }
3533 }
3534
3535 pub fn show_local_cursors(&self) -> bool {
3536 self.show_local_cursors
3537 }
3538
3539 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3540 self.refresh_active_diagnostics(cx);
3541 cx.notify();
3542 }
3543
3544 fn on_buffer_event(
3545 &mut self,
3546 _: ModelHandle<MultiBuffer>,
3547 event: &language::Event,
3548 cx: &mut ViewContext<Self>,
3549 ) {
3550 match event {
3551 language::Event::Edited => cx.emit(Event::Edited),
3552 language::Event::Dirtied => cx.emit(Event::Dirtied),
3553 language::Event::Saved => cx.emit(Event::Saved),
3554 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3555 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3556 language::Event::Closed => cx.emit(Event::Closed),
3557 _ => {}
3558 }
3559 }
3560
3561 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3562 cx.notify();
3563 }
3564}
3565
3566impl EditorSnapshot {
3567 pub fn is_focused(&self) -> bool {
3568 self.is_focused
3569 }
3570
3571 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3572 self.placeholder_text.as_ref()
3573 }
3574
3575 pub fn scroll_position(&self) -> Vector2F {
3576 compute_scroll_position(
3577 &self.display_snapshot,
3578 self.scroll_position,
3579 &self.scroll_top_anchor,
3580 )
3581 }
3582}
3583
3584impl Deref for EditorSnapshot {
3585 type Target = DisplaySnapshot;
3586
3587 fn deref(&self) -> &Self::Target {
3588 &self.display_snapshot
3589 }
3590}
3591
3592impl EditorSettings {
3593 #[cfg(any(test, feature = "test-support"))]
3594 pub fn test(cx: &AppContext) -> Self {
3595 Self {
3596 tab_size: 4,
3597 soft_wrap: SoftWrap::None,
3598 style: {
3599 let font_cache: &gpui::FontCache = cx.font_cache();
3600 let font_family_name = Arc::from("Monaco");
3601 let font_properties = Default::default();
3602 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3603 let font_id = font_cache
3604 .select_font(font_family_id, &font_properties)
3605 .unwrap();
3606 EditorStyle {
3607 text: gpui::fonts::TextStyle {
3608 font_family_name,
3609 font_family_id,
3610 font_id,
3611 font_size: 14.,
3612 color: gpui::color::Color::from_u32(0xff0000ff),
3613 font_properties,
3614 underline: None,
3615 },
3616 placeholder_text: None,
3617 background: Default::default(),
3618 gutter_background: Default::default(),
3619 active_line_background: Default::default(),
3620 highlighted_line_background: Default::default(),
3621 line_number: Default::default(),
3622 line_number_active: Default::default(),
3623 selection: Default::default(),
3624 guest_selections: Default::default(),
3625 syntax: Default::default(),
3626 error_diagnostic: Default::default(),
3627 invalid_error_diagnostic: Default::default(),
3628 warning_diagnostic: Default::default(),
3629 invalid_warning_diagnostic: Default::default(),
3630 information_diagnostic: Default::default(),
3631 invalid_information_diagnostic: Default::default(),
3632 hint_diagnostic: Default::default(),
3633 invalid_hint_diagnostic: Default::default(),
3634 }
3635 },
3636 }
3637 }
3638}
3639
3640fn compute_scroll_position(
3641 snapshot: &DisplaySnapshot,
3642 mut scroll_position: Vector2F,
3643 scroll_top_anchor: &Anchor,
3644) -> Vector2F {
3645 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3646 scroll_position.set_y(scroll_top + scroll_position.y());
3647 scroll_position
3648}
3649
3650#[derive(Copy, Clone)]
3651pub enum Event {
3652 Activate,
3653 Edited,
3654 Blurred,
3655 Dirtied,
3656 Saved,
3657 FileHandleChanged,
3658 Closed,
3659}
3660
3661impl Entity for Editor {
3662 type Event = Event;
3663}
3664
3665impl View for Editor {
3666 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3667 let settings = (self.build_settings)(cx);
3668 self.display_map.update(cx, |map, cx| {
3669 map.set_font(
3670 settings.style.text.font_id,
3671 settings.style.text.font_size,
3672 cx,
3673 )
3674 });
3675 EditorElement::new(self.handle.clone(), settings).boxed()
3676 }
3677
3678 fn ui_name() -> &'static str {
3679 "Editor"
3680 }
3681
3682 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3683 self.focused = true;
3684 self.blink_cursors(self.blink_epoch, cx);
3685 self.buffer.update(cx, |buffer, cx| {
3686 buffer.set_active_selections(&self.selections, cx)
3687 });
3688 }
3689
3690 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3691 self.focused = false;
3692 self.show_local_cursors = false;
3693 self.buffer
3694 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3695 cx.emit(Event::Blurred);
3696 cx.notify();
3697 }
3698
3699 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3700 let mut cx = Self::default_keymap_context();
3701 let mode = match self.mode {
3702 EditorMode::SingleLine => "single_line",
3703 EditorMode::AutoHeight { .. } => "auto_height",
3704 EditorMode::Full => "full",
3705 };
3706 cx.map.insert("mode".into(), mode.into());
3707 cx
3708 }
3709}
3710
3711impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3712 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3713 let start = self.start.to_point(buffer);
3714 let end = self.end.to_point(buffer);
3715 if self.reversed {
3716 end..start
3717 } else {
3718 start..end
3719 }
3720 }
3721
3722 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3723 let start = self.start.to_offset(buffer);
3724 let end = self.end.to_offset(buffer);
3725 if self.reversed {
3726 end..start
3727 } else {
3728 start..end
3729 }
3730 }
3731
3732 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3733 let start = self
3734 .start
3735 .to_point(&map.buffer_snapshot)
3736 .to_display_point(map);
3737 let end = self
3738 .end
3739 .to_point(&map.buffer_snapshot)
3740 .to_display_point(map);
3741 if self.reversed {
3742 end..start
3743 } else {
3744 start..end
3745 }
3746 }
3747
3748 fn spanned_rows(
3749 &self,
3750 include_end_if_at_line_start: bool,
3751 map: &DisplaySnapshot,
3752 ) -> Range<u32> {
3753 let start = self.start.to_point(&map.buffer_snapshot);
3754 let mut end = self.end.to_point(&map.buffer_snapshot);
3755 if !include_end_if_at_line_start
3756 && end.row != map.buffer_snapshot.max_point().row
3757 && start.row != end.row
3758 && end.column == 0
3759 {
3760 end.row -= 1;
3761 }
3762
3763 let buffer_start = map.prev_line_boundary(start).0;
3764 let buffer_end = map.next_line_boundary(end).0;
3765 buffer_start.row..buffer_end.row + 1
3766 }
3767}
3768
3769pub fn diagnostic_block_renderer(
3770 diagnostic: Diagnostic,
3771 is_valid: bool,
3772 build_settings: BuildSettings,
3773) -> RenderBlock {
3774 Arc::new(move |cx: &BlockContext| {
3775 let settings = build_settings(cx);
3776 let mut text_style = settings.style.text.clone();
3777 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3778 Text::new(diagnostic.message.clone(), text_style)
3779 .contained()
3780 .with_margin_left(cx.anchor_x)
3781 .boxed()
3782 })
3783}
3784
3785pub fn diagnostic_header_renderer(
3786 buffer: ModelHandle<Buffer>,
3787 diagnostic: Diagnostic,
3788 is_valid: bool,
3789 build_settings: BuildSettings,
3790) -> RenderBlock {
3791 Arc::new(move |cx| {
3792 let settings = build_settings(cx);
3793 let mut text_style = settings.style.text.clone();
3794 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3795 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3796 file.path().to_string_lossy().to_string()
3797 } else {
3798 "untitled".to_string()
3799 };
3800
3801 Flex::column()
3802 .with_child(Label::new(diagnostic.message.clone(), text_style).boxed())
3803 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3804 .boxed()
3805 })
3806}
3807
3808pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3809 Arc::new(move |cx| {
3810 let settings = build_settings(cx);
3811 let text_style = settings.style.text.clone();
3812 Label::new("...".to_string(), text_style).boxed()
3813 })
3814}
3815
3816pub fn diagnostic_style(
3817 severity: DiagnosticSeverity,
3818 valid: bool,
3819 style: &EditorStyle,
3820) -> DiagnosticStyle {
3821 match (severity, valid) {
3822 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3823 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3824 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3825 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3826 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3827 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3828 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3829 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3830 _ => Default::default(),
3831 }
3832}
3833
3834pub fn settings_builder(
3835 buffer: WeakModelHandle<MultiBuffer>,
3836 settings: watch::Receiver<workspace::Settings>,
3837) -> BuildSettings {
3838 Arc::new(move |cx| {
3839 let settings = settings.borrow();
3840 let font_cache = cx.font_cache();
3841 let font_family_id = settings.buffer_font_family;
3842 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3843 let font_properties = Default::default();
3844 let font_id = font_cache
3845 .select_font(font_family_id, &font_properties)
3846 .unwrap();
3847 let font_size = settings.buffer_font_size;
3848
3849 let mut theme = settings.theme.editor.clone();
3850 theme.text = TextStyle {
3851 color: theme.text.color,
3852 font_family_name,
3853 font_family_id,
3854 font_id,
3855 font_size,
3856 font_properties,
3857 underline: None,
3858 };
3859 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3860 let soft_wrap = match settings.soft_wrap(language) {
3861 workspace::settings::SoftWrap::None => SoftWrap::None,
3862 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3863 workspace::settings::SoftWrap::PreferredLineLength => {
3864 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3865 }
3866 };
3867
3868 EditorSettings {
3869 tab_size: settings.tab_size,
3870 soft_wrap,
3871 style: theme,
3872 }
3873 })
3874}
3875
3876#[cfg(test)]
3877mod tests {
3878 use super::*;
3879 use language::LanguageConfig;
3880 use std::time::Instant;
3881 use text::Point;
3882 use unindent::Unindent;
3883 use util::test::sample_text;
3884
3885 #[gpui::test]
3886 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3887 let mut now = Instant::now();
3888 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3889 let group_interval = buffer.read(cx).transaction_group_interval();
3890 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3891 let settings = EditorSettings::test(cx);
3892 let (_, editor) = cx.add_window(Default::default(), |cx| {
3893 build_editor(buffer.clone(), settings, cx)
3894 });
3895
3896 editor.update(cx, |editor, cx| {
3897 editor.start_transaction_at(now, cx);
3898 editor.select_ranges([2..4], None, cx);
3899 editor.insert("cd", cx);
3900 editor.end_transaction_at(now, cx);
3901 assert_eq!(editor.text(cx), "12cd56");
3902 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3903
3904 editor.start_transaction_at(now, cx);
3905 editor.select_ranges([4..5], None, cx);
3906 editor.insert("e", cx);
3907 editor.end_transaction_at(now, cx);
3908 assert_eq!(editor.text(cx), "12cde6");
3909 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3910
3911 now += group_interval + Duration::from_millis(1);
3912 editor.select_ranges([2..2], None, cx);
3913
3914 // Simulate an edit in another editor
3915 buffer.update(cx, |buffer, cx| {
3916 buffer.start_transaction_at(now, cx);
3917 buffer.edit([0..1], "a", cx);
3918 buffer.edit([1..1], "b", cx);
3919 buffer.end_transaction_at(now, cx);
3920 });
3921
3922 assert_eq!(editor.text(cx), "ab2cde6");
3923 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
3924
3925 // Last transaction happened past the group interval in a different editor.
3926 // Undo it individually and don't restore selections.
3927 editor.undo(&Undo, cx);
3928 assert_eq!(editor.text(cx), "12cde6");
3929 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
3930
3931 // First two transactions happened within the group interval in this editor.
3932 // Undo them together and restore selections.
3933 editor.undo(&Undo, cx);
3934 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
3935 assert_eq!(editor.text(cx), "123456");
3936 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
3937
3938 // Redo the first two transactions together.
3939 editor.redo(&Redo, cx);
3940 assert_eq!(editor.text(cx), "12cde6");
3941 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3942
3943 // Redo the last transaction on its own.
3944 editor.redo(&Redo, cx);
3945 assert_eq!(editor.text(cx), "ab2cde6");
3946 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
3947
3948 // Test empty transactions.
3949 editor.start_transaction_at(now, cx);
3950 editor.end_transaction_at(now, cx);
3951 editor.undo(&Undo, cx);
3952 assert_eq!(editor.text(cx), "12cde6");
3953 });
3954 }
3955
3956 #[gpui::test]
3957 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3958 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3959 let settings = EditorSettings::test(cx);
3960 let (_, editor) =
3961 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3962
3963 editor.update(cx, |view, cx| {
3964 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3965 });
3966
3967 assert_eq!(
3968 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3969 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3970 );
3971
3972 editor.update(cx, |view, cx| {
3973 view.update_selection(DisplayPoint::new(3, 3), 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(3, 3)]
3979 );
3980
3981 editor.update(cx, |view, cx| {
3982 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3983 });
3984
3985 assert_eq!(
3986 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3987 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3988 );
3989
3990 editor.update(cx, |view, cx| {
3991 view.end_selection(cx);
3992 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3993 });
3994
3995 assert_eq!(
3996 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3997 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3998 );
3999
4000 editor.update(cx, |view, cx| {
4001 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4002 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4003 });
4004
4005 assert_eq!(
4006 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4007 [
4008 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4009 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4010 ]
4011 );
4012
4013 editor.update(cx, |view, cx| {
4014 view.end_selection(cx);
4015 });
4016
4017 assert_eq!(
4018 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4019 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4020 );
4021 }
4022
4023 #[gpui::test]
4024 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4025 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4026 let settings = EditorSettings::test(cx);
4027 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4028
4029 view.update(cx, |view, cx| {
4030 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4031 assert_eq!(
4032 view.selected_display_ranges(cx),
4033 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4034 );
4035 });
4036
4037 view.update(cx, |view, cx| {
4038 view.update_selection(DisplayPoint::new(3, 3), 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 view.update(cx, |view, cx| {
4046 view.cancel(&Cancel, cx);
4047 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4048 assert_eq!(
4049 view.selected_display_ranges(cx),
4050 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4051 );
4052 });
4053 }
4054
4055 #[gpui::test]
4056 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4057 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4058 let settings = EditorSettings::test(cx);
4059 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4060
4061 view.update(cx, |view, cx| {
4062 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4063 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4064 view.end_selection(cx);
4065
4066 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4067 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4068 view.end_selection(cx);
4069 assert_eq!(
4070 view.selected_display_ranges(cx),
4071 [
4072 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4073 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4074 ]
4075 );
4076 });
4077
4078 view.update(cx, |view, cx| {
4079 view.cancel(&Cancel, cx);
4080 assert_eq!(
4081 view.selected_display_ranges(cx),
4082 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4083 );
4084 });
4085
4086 view.update(cx, |view, cx| {
4087 view.cancel(&Cancel, cx);
4088 assert_eq!(
4089 view.selected_display_ranges(cx),
4090 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4091 );
4092 });
4093 }
4094
4095 #[gpui::test]
4096 fn test_fold(cx: &mut gpui::MutableAppContext) {
4097 let buffer = MultiBuffer::build_simple(
4098 &"
4099 impl Foo {
4100 // Hello!
4101
4102 fn a() {
4103 1
4104 }
4105
4106 fn b() {
4107 2
4108 }
4109
4110 fn c() {
4111 3
4112 }
4113 }
4114 "
4115 .unindent(),
4116 cx,
4117 );
4118 let settings = EditorSettings::test(&cx);
4119 let (_, view) = cx.add_window(Default::default(), |cx| {
4120 build_editor(buffer.clone(), settings, cx)
4121 });
4122
4123 view.update(cx, |view, cx| {
4124 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4125 .unwrap();
4126 view.fold(&Fold, cx);
4127 assert_eq!(
4128 view.display_text(cx),
4129 "
4130 impl Foo {
4131 // Hello!
4132
4133 fn a() {
4134 1
4135 }
4136
4137 fn b() {…
4138 }
4139
4140 fn c() {…
4141 }
4142 }
4143 "
4144 .unindent(),
4145 );
4146
4147 view.fold(&Fold, cx);
4148 assert_eq!(
4149 view.display_text(cx),
4150 "
4151 impl Foo {…
4152 }
4153 "
4154 .unindent(),
4155 );
4156
4157 view.unfold(&Unfold, cx);
4158 assert_eq!(
4159 view.display_text(cx),
4160 "
4161 impl Foo {
4162 // Hello!
4163
4164 fn a() {
4165 1
4166 }
4167
4168 fn b() {…
4169 }
4170
4171 fn c() {…
4172 }
4173 }
4174 "
4175 .unindent(),
4176 );
4177
4178 view.unfold(&Unfold, cx);
4179 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4180 });
4181 }
4182
4183 #[gpui::test]
4184 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4185 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4186 let settings = EditorSettings::test(&cx);
4187 let (_, view) = cx.add_window(Default::default(), |cx| {
4188 build_editor(buffer.clone(), settings, cx)
4189 });
4190
4191 buffer.update(cx, |buffer, cx| {
4192 buffer.edit(
4193 vec![
4194 Point::new(1, 0)..Point::new(1, 0),
4195 Point::new(1, 1)..Point::new(1, 1),
4196 ],
4197 "\t",
4198 cx,
4199 );
4200 });
4201
4202 view.update(cx, |view, cx| {
4203 assert_eq!(
4204 view.selected_display_ranges(cx),
4205 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4206 );
4207
4208 view.move_down(&MoveDown, cx);
4209 assert_eq!(
4210 view.selected_display_ranges(cx),
4211 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4212 );
4213
4214 view.move_right(&MoveRight, cx);
4215 assert_eq!(
4216 view.selected_display_ranges(cx),
4217 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4218 );
4219
4220 view.move_left(&MoveLeft, cx);
4221 assert_eq!(
4222 view.selected_display_ranges(cx),
4223 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4224 );
4225
4226 view.move_up(&MoveUp, cx);
4227 assert_eq!(
4228 view.selected_display_ranges(cx),
4229 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4230 );
4231
4232 view.move_to_end(&MoveToEnd, cx);
4233 assert_eq!(
4234 view.selected_display_ranges(cx),
4235 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4236 );
4237
4238 view.move_to_beginning(&MoveToBeginning, cx);
4239 assert_eq!(
4240 view.selected_display_ranges(cx),
4241 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4242 );
4243
4244 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4245 .unwrap();
4246 view.select_to_beginning(&SelectToBeginning, cx);
4247 assert_eq!(
4248 view.selected_display_ranges(cx),
4249 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4250 );
4251
4252 view.select_to_end(&SelectToEnd, cx);
4253 assert_eq!(
4254 view.selected_display_ranges(cx),
4255 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4256 );
4257 });
4258 }
4259
4260 #[gpui::test]
4261 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4262 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4263 let settings = EditorSettings::test(&cx);
4264 let (_, view) = cx.add_window(Default::default(), |cx| {
4265 build_editor(buffer.clone(), settings, cx)
4266 });
4267
4268 assert_eq!('ⓐ'.len_utf8(), 3);
4269 assert_eq!('α'.len_utf8(), 2);
4270
4271 view.update(cx, |view, cx| {
4272 view.fold_ranges(
4273 vec![
4274 Point::new(0, 6)..Point::new(0, 12),
4275 Point::new(1, 2)..Point::new(1, 4),
4276 Point::new(2, 4)..Point::new(2, 8),
4277 ],
4278 cx,
4279 );
4280 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4281
4282 view.move_right(&MoveRight, cx);
4283 assert_eq!(
4284 view.selected_display_ranges(cx),
4285 &[empty_range(0, "ⓐ".len())]
4286 );
4287 view.move_right(&MoveRight, cx);
4288 assert_eq!(
4289 view.selected_display_ranges(cx),
4290 &[empty_range(0, "ⓐⓑ".len())]
4291 );
4292 view.move_right(&MoveRight, cx);
4293 assert_eq!(
4294 view.selected_display_ranges(cx),
4295 &[empty_range(0, "ⓐⓑ…".len())]
4296 );
4297
4298 view.move_down(&MoveDown, cx);
4299 assert_eq!(
4300 view.selected_display_ranges(cx),
4301 &[empty_range(1, "ab…".len())]
4302 );
4303 view.move_left(&MoveLeft, cx);
4304 assert_eq!(
4305 view.selected_display_ranges(cx),
4306 &[empty_range(1, "ab".len())]
4307 );
4308 view.move_left(&MoveLeft, cx);
4309 assert_eq!(
4310 view.selected_display_ranges(cx),
4311 &[empty_range(1, "a".len())]
4312 );
4313
4314 view.move_down(&MoveDown, cx);
4315 assert_eq!(
4316 view.selected_display_ranges(cx),
4317 &[empty_range(2, "α".len())]
4318 );
4319 view.move_right(&MoveRight, cx);
4320 assert_eq!(
4321 view.selected_display_ranges(cx),
4322 &[empty_range(2, "αβ".len())]
4323 );
4324 view.move_right(&MoveRight, cx);
4325 assert_eq!(
4326 view.selected_display_ranges(cx),
4327 &[empty_range(2, "αβ…".len())]
4328 );
4329 view.move_right(&MoveRight, cx);
4330 assert_eq!(
4331 view.selected_display_ranges(cx),
4332 &[empty_range(2, "αβ…ε".len())]
4333 );
4334
4335 view.move_up(&MoveUp, cx);
4336 assert_eq!(
4337 view.selected_display_ranges(cx),
4338 &[empty_range(1, "ab…e".len())]
4339 );
4340 view.move_up(&MoveUp, cx);
4341 assert_eq!(
4342 view.selected_display_ranges(cx),
4343 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4344 );
4345 view.move_left(&MoveLeft, cx);
4346 assert_eq!(
4347 view.selected_display_ranges(cx),
4348 &[empty_range(0, "ⓐⓑ…".len())]
4349 );
4350 view.move_left(&MoveLeft, cx);
4351 assert_eq!(
4352 view.selected_display_ranges(cx),
4353 &[empty_range(0, "ⓐⓑ".len())]
4354 );
4355 view.move_left(&MoveLeft, cx);
4356 assert_eq!(
4357 view.selected_display_ranges(cx),
4358 &[empty_range(0, "ⓐ".len())]
4359 );
4360 });
4361 }
4362
4363 #[gpui::test]
4364 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4365 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4366 let settings = EditorSettings::test(&cx);
4367 let (_, view) = cx.add_window(Default::default(), |cx| {
4368 build_editor(buffer.clone(), settings, cx)
4369 });
4370 view.update(cx, |view, cx| {
4371 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4372 .unwrap();
4373
4374 view.move_down(&MoveDown, cx);
4375 assert_eq!(
4376 view.selected_display_ranges(cx),
4377 &[empty_range(1, "abcd".len())]
4378 );
4379
4380 view.move_down(&MoveDown, cx);
4381 assert_eq!(
4382 view.selected_display_ranges(cx),
4383 &[empty_range(2, "αβγ".len())]
4384 );
4385
4386 view.move_down(&MoveDown, cx);
4387 assert_eq!(
4388 view.selected_display_ranges(cx),
4389 &[empty_range(3, "abcd".len())]
4390 );
4391
4392 view.move_down(&MoveDown, cx);
4393 assert_eq!(
4394 view.selected_display_ranges(cx),
4395 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4396 );
4397
4398 view.move_up(&MoveUp, cx);
4399 assert_eq!(
4400 view.selected_display_ranges(cx),
4401 &[empty_range(3, "abcd".len())]
4402 );
4403
4404 view.move_up(&MoveUp, cx);
4405 assert_eq!(
4406 view.selected_display_ranges(cx),
4407 &[empty_range(2, "αβγ".len())]
4408 );
4409 });
4410 }
4411
4412 #[gpui::test]
4413 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4414 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4415 let settings = EditorSettings::test(&cx);
4416 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4417 view.update(cx, |view, cx| {
4418 view.select_display_ranges(
4419 &[
4420 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4421 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4422 ],
4423 cx,
4424 )
4425 .unwrap();
4426 });
4427
4428 view.update(cx, |view, cx| {
4429 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4430 assert_eq!(
4431 view.selected_display_ranges(cx),
4432 &[
4433 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4434 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4435 ]
4436 );
4437 });
4438
4439 view.update(cx, |view, cx| {
4440 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4441 assert_eq!(
4442 view.selected_display_ranges(cx),
4443 &[
4444 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4445 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4446 ]
4447 );
4448 });
4449
4450 view.update(cx, |view, cx| {
4451 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4452 assert_eq!(
4453 view.selected_display_ranges(cx),
4454 &[
4455 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4456 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4457 ]
4458 );
4459 });
4460
4461 view.update(cx, |view, cx| {
4462 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4463 assert_eq!(
4464 view.selected_display_ranges(cx),
4465 &[
4466 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4467 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4468 ]
4469 );
4470 });
4471
4472 // Moving to the end of line again is a no-op.
4473 view.update(cx, |view, cx| {
4474 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4475 assert_eq!(
4476 view.selected_display_ranges(cx),
4477 &[
4478 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4479 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4480 ]
4481 );
4482 });
4483
4484 view.update(cx, |view, cx| {
4485 view.move_left(&MoveLeft, cx);
4486 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4487 assert_eq!(
4488 view.selected_display_ranges(cx),
4489 &[
4490 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4491 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4492 ]
4493 );
4494 });
4495
4496 view.update(cx, |view, cx| {
4497 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4498 assert_eq!(
4499 view.selected_display_ranges(cx),
4500 &[
4501 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4502 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4503 ]
4504 );
4505 });
4506
4507 view.update(cx, |view, cx| {
4508 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4509 assert_eq!(
4510 view.selected_display_ranges(cx),
4511 &[
4512 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4513 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4514 ]
4515 );
4516 });
4517
4518 view.update(cx, |view, cx| {
4519 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4520 assert_eq!(
4521 view.selected_display_ranges(cx),
4522 &[
4523 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4524 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4525 ]
4526 );
4527 });
4528
4529 view.update(cx, |view, cx| {
4530 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4531 assert_eq!(view.display_text(cx), "ab\n de");
4532 assert_eq!(
4533 view.selected_display_ranges(cx),
4534 &[
4535 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4536 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4537 ]
4538 );
4539 });
4540
4541 view.update(cx, |view, cx| {
4542 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4543 assert_eq!(view.display_text(cx), "\n");
4544 assert_eq!(
4545 view.selected_display_ranges(cx),
4546 &[
4547 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4548 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4549 ]
4550 );
4551 });
4552 }
4553
4554 #[gpui::test]
4555 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4556 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4557 let settings = EditorSettings::test(&cx);
4558 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4559 view.update(cx, |view, cx| {
4560 view.select_display_ranges(
4561 &[
4562 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4563 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4564 ],
4565 cx,
4566 )
4567 .unwrap();
4568 });
4569
4570 view.update(cx, |view, cx| {
4571 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4572 assert_eq!(
4573 view.selected_display_ranges(cx),
4574 &[
4575 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4576 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4577 ]
4578 );
4579 });
4580
4581 view.update(cx, |view, cx| {
4582 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4583 assert_eq!(
4584 view.selected_display_ranges(cx),
4585 &[
4586 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4587 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4588 ]
4589 );
4590 });
4591
4592 view.update(cx, |view, cx| {
4593 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4594 assert_eq!(
4595 view.selected_display_ranges(cx),
4596 &[
4597 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4598 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4599 ]
4600 );
4601 });
4602
4603 view.update(cx, |view, cx| {
4604 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4605 assert_eq!(
4606 view.selected_display_ranges(cx),
4607 &[
4608 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4609 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4610 ]
4611 );
4612 });
4613
4614 view.update(cx, |view, cx| {
4615 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4616 assert_eq!(
4617 view.selected_display_ranges(cx),
4618 &[
4619 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4620 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4621 ]
4622 );
4623 });
4624
4625 view.update(cx, |view, cx| {
4626 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4627 assert_eq!(
4628 view.selected_display_ranges(cx),
4629 &[
4630 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4631 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4632 ]
4633 );
4634 });
4635
4636 view.update(cx, |view, cx| {
4637 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4638 assert_eq!(
4639 view.selected_display_ranges(cx),
4640 &[
4641 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4642 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4643 ]
4644 );
4645 });
4646
4647 view.update(cx, |view, cx| {
4648 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4649 assert_eq!(
4650 view.selected_display_ranges(cx),
4651 &[
4652 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4653 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4654 ]
4655 );
4656 });
4657
4658 view.update(cx, |view, cx| {
4659 view.move_right(&MoveRight, cx);
4660 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4661 assert_eq!(
4662 view.selected_display_ranges(cx),
4663 &[
4664 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4665 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4666 ]
4667 );
4668 });
4669
4670 view.update(cx, |view, cx| {
4671 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4672 assert_eq!(
4673 view.selected_display_ranges(cx),
4674 &[
4675 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4676 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4677 ]
4678 );
4679 });
4680
4681 view.update(cx, |view, cx| {
4682 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4683 assert_eq!(
4684 view.selected_display_ranges(cx),
4685 &[
4686 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4687 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4688 ]
4689 );
4690 });
4691 }
4692
4693 #[gpui::test]
4694 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4695 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4696 let settings = EditorSettings::test(&cx);
4697 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4698
4699 view.update(cx, |view, cx| {
4700 view.set_wrap_width(Some(140.), cx);
4701 assert_eq!(
4702 view.display_text(cx),
4703 "use one::{\n two::three::\n four::five\n};"
4704 );
4705
4706 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4707 .unwrap();
4708
4709 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4710 assert_eq!(
4711 view.selected_display_ranges(cx),
4712 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4713 );
4714
4715 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4716 assert_eq!(
4717 view.selected_display_ranges(cx),
4718 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4719 );
4720
4721 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4722 assert_eq!(
4723 view.selected_display_ranges(cx),
4724 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4725 );
4726
4727 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4728 assert_eq!(
4729 view.selected_display_ranges(cx),
4730 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4731 );
4732
4733 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4734 assert_eq!(
4735 view.selected_display_ranges(cx),
4736 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4737 );
4738
4739 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4740 assert_eq!(
4741 view.selected_display_ranges(cx),
4742 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4743 );
4744 });
4745 }
4746
4747 #[gpui::test]
4748 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4749 let buffer = MultiBuffer::build_simple("one two three four", cx);
4750 let settings = EditorSettings::test(&cx);
4751 let (_, view) = cx.add_window(Default::default(), |cx| {
4752 build_editor(buffer.clone(), settings, cx)
4753 });
4754
4755 view.update(cx, |view, cx| {
4756 view.select_display_ranges(
4757 &[
4758 // an empty selection - the preceding word fragment is deleted
4759 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4760 // characters selected - they are deleted
4761 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4762 ],
4763 cx,
4764 )
4765 .unwrap();
4766 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4767 });
4768
4769 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4770
4771 view.update(cx, |view, cx| {
4772 view.select_display_ranges(
4773 &[
4774 // an empty selection - the following word fragment is deleted
4775 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4776 // characters selected - they are deleted
4777 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4778 ],
4779 cx,
4780 )
4781 .unwrap();
4782 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4783 });
4784
4785 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4786 }
4787
4788 #[gpui::test]
4789 fn test_newline(cx: &mut gpui::MutableAppContext) {
4790 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4791 let settings = EditorSettings::test(&cx);
4792 let (_, view) = cx.add_window(Default::default(), |cx| {
4793 build_editor(buffer.clone(), settings, cx)
4794 });
4795
4796 view.update(cx, |view, cx| {
4797 view.select_display_ranges(
4798 &[
4799 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4800 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4801 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4802 ],
4803 cx,
4804 )
4805 .unwrap();
4806
4807 view.newline(&Newline, cx);
4808 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4809 });
4810 }
4811
4812 #[gpui::test]
4813 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4814 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4815 let settings = EditorSettings::test(&cx);
4816 let (_, view) = cx.add_window(Default::default(), |cx| {
4817 build_editor(buffer.clone(), settings, cx)
4818 });
4819
4820 view.update(cx, |view, cx| {
4821 // two selections on the same line
4822 view.select_display_ranges(
4823 &[
4824 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4825 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4826 ],
4827 cx,
4828 )
4829 .unwrap();
4830
4831 // indent from mid-tabstop to full tabstop
4832 view.tab(&Tab, cx);
4833 assert_eq!(view.text(cx), " one two\nthree\n four");
4834 assert_eq!(
4835 view.selected_display_ranges(cx),
4836 &[
4837 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4838 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4839 ]
4840 );
4841
4842 // outdent from 1 tabstop to 0 tabstops
4843 view.outdent(&Outdent, cx);
4844 assert_eq!(view.text(cx), "one two\nthree\n four");
4845 assert_eq!(
4846 view.selected_display_ranges(cx),
4847 &[
4848 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4849 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4850 ]
4851 );
4852
4853 // select across line ending
4854 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4855 .unwrap();
4856
4857 // indent and outdent affect only the preceding line
4858 view.tab(&Tab, cx);
4859 assert_eq!(view.text(cx), "one two\n three\n four");
4860 assert_eq!(
4861 view.selected_display_ranges(cx),
4862 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4863 );
4864 view.outdent(&Outdent, cx);
4865 assert_eq!(view.text(cx), "one two\nthree\n four");
4866 assert_eq!(
4867 view.selected_display_ranges(cx),
4868 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4869 );
4870 });
4871 }
4872
4873 #[gpui::test]
4874 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4875 let buffer =
4876 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4877 let settings = EditorSettings::test(&cx);
4878 let (_, view) = cx.add_window(Default::default(), |cx| {
4879 build_editor(buffer.clone(), settings, cx)
4880 });
4881
4882 view.update(cx, |view, cx| {
4883 view.select_display_ranges(
4884 &[
4885 // an empty selection - the preceding character is deleted
4886 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4887 // one character selected - it is deleted
4888 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4889 // a line suffix selected - it is deleted
4890 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4891 ],
4892 cx,
4893 )
4894 .unwrap();
4895 view.backspace(&Backspace, cx);
4896 });
4897
4898 assert_eq!(
4899 buffer.read(cx).read(cx).text(),
4900 "oe two three\nfou five six\nseven ten\n"
4901 );
4902 }
4903
4904 #[gpui::test]
4905 fn test_delete(cx: &mut gpui::MutableAppContext) {
4906 let buffer =
4907 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4908 let settings = EditorSettings::test(&cx);
4909 let (_, view) = cx.add_window(Default::default(), |cx| {
4910 build_editor(buffer.clone(), settings, cx)
4911 });
4912
4913 view.update(cx, |view, cx| {
4914 view.select_display_ranges(
4915 &[
4916 // an empty selection - the following character is deleted
4917 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4918 // one character selected - it is deleted
4919 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4920 // a line suffix selected - it is deleted
4921 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4922 ],
4923 cx,
4924 )
4925 .unwrap();
4926 view.delete(&Delete, cx);
4927 });
4928
4929 assert_eq!(
4930 buffer.read(cx).read(cx).text(),
4931 "on two three\nfou five six\nseven ten\n"
4932 );
4933 }
4934
4935 #[gpui::test]
4936 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4937 let settings = EditorSettings::test(&cx);
4938 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4939 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4940 view.update(cx, |view, cx| {
4941 view.select_display_ranges(
4942 &[
4943 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4944 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4945 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4946 ],
4947 cx,
4948 )
4949 .unwrap();
4950 view.delete_line(&DeleteLine, cx);
4951 assert_eq!(view.display_text(cx), "ghi");
4952 assert_eq!(
4953 view.selected_display_ranges(cx),
4954 vec![
4955 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4956 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4957 ]
4958 );
4959 });
4960
4961 let settings = EditorSettings::test(&cx);
4962 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4963 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4964 view.update(cx, |view, cx| {
4965 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4966 .unwrap();
4967 view.delete_line(&DeleteLine, cx);
4968 assert_eq!(view.display_text(cx), "ghi\n");
4969 assert_eq!(
4970 view.selected_display_ranges(cx),
4971 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4972 );
4973 });
4974 }
4975
4976 #[gpui::test]
4977 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4978 let settings = EditorSettings::test(&cx);
4979 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4980 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4981 view.update(cx, |view, cx| {
4982 view.select_display_ranges(
4983 &[
4984 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4985 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4986 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4987 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4988 ],
4989 cx,
4990 )
4991 .unwrap();
4992 view.duplicate_line(&DuplicateLine, cx);
4993 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
4994 assert_eq!(
4995 view.selected_display_ranges(cx),
4996 vec![
4997 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4998 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4999 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5000 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5001 ]
5002 );
5003 });
5004
5005 let settings = EditorSettings::test(&cx);
5006 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5007 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5008 view.update(cx, |view, cx| {
5009 view.select_display_ranges(
5010 &[
5011 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5012 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5013 ],
5014 cx,
5015 )
5016 .unwrap();
5017 view.duplicate_line(&DuplicateLine, cx);
5018 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5019 assert_eq!(
5020 view.selected_display_ranges(cx),
5021 vec![
5022 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5023 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5024 ]
5025 );
5026 });
5027 }
5028
5029 #[gpui::test]
5030 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5031 let settings = EditorSettings::test(&cx);
5032 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5033 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5034 view.update(cx, |view, cx| {
5035 view.fold_ranges(
5036 vec![
5037 Point::new(0, 2)..Point::new(1, 2),
5038 Point::new(2, 3)..Point::new(4, 1),
5039 Point::new(7, 0)..Point::new(8, 4),
5040 ],
5041 cx,
5042 );
5043 view.select_display_ranges(
5044 &[
5045 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5046 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5047 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5048 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5049 ],
5050 cx,
5051 )
5052 .unwrap();
5053 assert_eq!(
5054 view.display_text(cx),
5055 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5056 );
5057
5058 view.move_line_up(&MoveLineUp, cx);
5059 assert_eq!(
5060 view.display_text(cx),
5061 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5062 );
5063 assert_eq!(
5064 view.selected_display_ranges(cx),
5065 vec![
5066 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5067 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5068 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5069 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5070 ]
5071 );
5072 });
5073
5074 view.update(cx, |view, cx| {
5075 view.move_line_down(&MoveLineDown, cx);
5076 assert_eq!(
5077 view.display_text(cx),
5078 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5079 );
5080 assert_eq!(
5081 view.selected_display_ranges(cx),
5082 vec![
5083 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5084 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5085 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5086 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5087 ]
5088 );
5089 });
5090
5091 view.update(cx, |view, cx| {
5092 view.move_line_down(&MoveLineDown, cx);
5093 assert_eq!(
5094 view.display_text(cx),
5095 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5096 );
5097 assert_eq!(
5098 view.selected_display_ranges(cx),
5099 vec![
5100 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5101 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5102 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5103 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5104 ]
5105 );
5106 });
5107
5108 view.update(cx, |view, cx| {
5109 view.move_line_up(&MoveLineUp, cx);
5110 assert_eq!(
5111 view.display_text(cx),
5112 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5113 );
5114 assert_eq!(
5115 view.selected_display_ranges(cx),
5116 vec![
5117 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5118 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5119 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5120 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5121 ]
5122 );
5123 });
5124 }
5125
5126 #[gpui::test]
5127 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5128 let settings = EditorSettings::test(&cx);
5129 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5130 let snapshot = buffer.read(cx).snapshot(cx);
5131 let (_, editor) =
5132 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5133 editor.update(cx, |editor, cx| {
5134 editor.insert_blocks(
5135 [BlockProperties {
5136 position: snapshot.anchor_after(Point::new(2, 0)),
5137 disposition: BlockDisposition::Below,
5138 height: 1,
5139 render: Arc::new(|_| Empty::new().boxed()),
5140 }],
5141 cx,
5142 );
5143 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5144 editor.move_line_down(&MoveLineDown, cx);
5145 });
5146 }
5147
5148 #[gpui::test]
5149 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5150 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5151 let settings = EditorSettings::test(&cx);
5152 let view = cx
5153 .add_window(Default::default(), |cx| {
5154 build_editor(buffer.clone(), settings, cx)
5155 })
5156 .1;
5157
5158 // Cut with three selections. Clipboard text is divided into three slices.
5159 view.update(cx, |view, cx| {
5160 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5161 view.cut(&Cut, cx);
5162 assert_eq!(view.display_text(cx), "two four six ");
5163 });
5164
5165 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5166 view.update(cx, |view, cx| {
5167 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5168 view.paste(&Paste, cx);
5169 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5170 assert_eq!(
5171 view.selected_display_ranges(cx),
5172 &[
5173 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5174 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5175 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5176 ]
5177 );
5178 });
5179
5180 // Paste again but with only two cursors. Since the number of cursors doesn't
5181 // match the number of slices in the clipboard, the entire clipboard text
5182 // is pasted at each cursor.
5183 view.update(cx, |view, cx| {
5184 view.select_ranges(vec![0..0, 31..31], None, cx);
5185 view.handle_input(&Input("( ".into()), cx);
5186 view.paste(&Paste, cx);
5187 view.handle_input(&Input(") ".into()), cx);
5188 assert_eq!(
5189 view.display_text(cx),
5190 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5191 );
5192 });
5193
5194 view.update(cx, |view, cx| {
5195 view.select_ranges(vec![0..0], None, cx);
5196 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5197 assert_eq!(
5198 view.display_text(cx),
5199 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5200 );
5201 });
5202
5203 // Cut with three selections, one of which is full-line.
5204 view.update(cx, |view, cx| {
5205 view.select_display_ranges(
5206 &[
5207 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5208 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5209 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5210 ],
5211 cx,
5212 )
5213 .unwrap();
5214 view.cut(&Cut, cx);
5215 assert_eq!(
5216 view.display_text(cx),
5217 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5218 );
5219 });
5220
5221 // Paste with three selections, noticing how the copied selection that was full-line
5222 // gets inserted before the second cursor.
5223 view.update(cx, |view, cx| {
5224 view.select_display_ranges(
5225 &[
5226 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5227 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5228 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5229 ],
5230 cx,
5231 )
5232 .unwrap();
5233 view.paste(&Paste, cx);
5234 assert_eq!(
5235 view.display_text(cx),
5236 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5237 );
5238 assert_eq!(
5239 view.selected_display_ranges(cx),
5240 &[
5241 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5242 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5243 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5244 ]
5245 );
5246 });
5247
5248 // Copy with a single cursor only, which writes the whole line into the clipboard.
5249 view.update(cx, |view, cx| {
5250 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5251 .unwrap();
5252 view.copy(&Copy, cx);
5253 });
5254
5255 // Paste with three selections, noticing how the copied full-line selection is inserted
5256 // before the empty selections but replaces the selection that is non-empty.
5257 view.update(cx, |view, cx| {
5258 view.select_display_ranges(
5259 &[
5260 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5261 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5262 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5263 ],
5264 cx,
5265 )
5266 .unwrap();
5267 view.paste(&Paste, cx);
5268 assert_eq!(
5269 view.display_text(cx),
5270 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5271 );
5272 assert_eq!(
5273 view.selected_display_ranges(cx),
5274 &[
5275 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5276 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5277 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5278 ]
5279 );
5280 });
5281 }
5282
5283 #[gpui::test]
5284 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5285 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5286 let settings = EditorSettings::test(&cx);
5287 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5288 view.update(cx, |view, cx| {
5289 view.select_all(&SelectAll, cx);
5290 assert_eq!(
5291 view.selected_display_ranges(cx),
5292 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5293 );
5294 });
5295 }
5296
5297 #[gpui::test]
5298 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5299 let settings = EditorSettings::test(&cx);
5300 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5301 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5302 view.update(cx, |view, cx| {
5303 view.select_display_ranges(
5304 &[
5305 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5306 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5307 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5308 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5309 ],
5310 cx,
5311 )
5312 .unwrap();
5313 view.select_line(&SelectLine, cx);
5314 assert_eq!(
5315 view.selected_display_ranges(cx),
5316 vec![
5317 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5318 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5319 ]
5320 );
5321 });
5322
5323 view.update(cx, |view, cx| {
5324 view.select_line(&SelectLine, cx);
5325 assert_eq!(
5326 view.selected_display_ranges(cx),
5327 vec![
5328 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5329 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5330 ]
5331 );
5332 });
5333
5334 view.update(cx, |view, cx| {
5335 view.select_line(&SelectLine, cx);
5336 assert_eq!(
5337 view.selected_display_ranges(cx),
5338 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5339 );
5340 });
5341 }
5342
5343 #[gpui::test]
5344 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5345 let settings = EditorSettings::test(&cx);
5346 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5347 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5348 view.update(cx, |view, cx| {
5349 view.fold_ranges(
5350 vec![
5351 Point::new(0, 2)..Point::new(1, 2),
5352 Point::new(2, 3)..Point::new(4, 1),
5353 Point::new(7, 0)..Point::new(8, 4),
5354 ],
5355 cx,
5356 );
5357 view.select_display_ranges(
5358 &[
5359 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5360 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5361 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5362 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5363 ],
5364 cx,
5365 )
5366 .unwrap();
5367 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5368 });
5369
5370 view.update(cx, |view, cx| {
5371 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5372 assert_eq!(
5373 view.display_text(cx),
5374 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5375 );
5376 assert_eq!(
5377 view.selected_display_ranges(cx),
5378 [
5379 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5380 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5381 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5382 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5383 ]
5384 );
5385 });
5386
5387 view.update(cx, |view, cx| {
5388 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5389 .unwrap();
5390 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5391 assert_eq!(
5392 view.display_text(cx),
5393 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5394 );
5395 assert_eq!(
5396 view.selected_display_ranges(cx),
5397 [
5398 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5399 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5400 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5401 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5402 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5403 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5404 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5405 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5406 ]
5407 );
5408 });
5409 }
5410
5411 #[gpui::test]
5412 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5413 let settings = EditorSettings::test(&cx);
5414 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5415 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5416
5417 view.update(cx, |view, cx| {
5418 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5419 .unwrap();
5420 });
5421 view.update(cx, |view, cx| {
5422 view.add_selection_above(&AddSelectionAbove, cx);
5423 assert_eq!(
5424 view.selected_display_ranges(cx),
5425 vec![
5426 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5427 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5428 ]
5429 );
5430 });
5431
5432 view.update(cx, |view, cx| {
5433 view.add_selection_above(&AddSelectionAbove, cx);
5434 assert_eq!(
5435 view.selected_display_ranges(cx),
5436 vec![
5437 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5438 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5439 ]
5440 );
5441 });
5442
5443 view.update(cx, |view, cx| {
5444 view.add_selection_below(&AddSelectionBelow, cx);
5445 assert_eq!(
5446 view.selected_display_ranges(cx),
5447 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5448 );
5449 });
5450
5451 view.update(cx, |view, cx| {
5452 view.add_selection_below(&AddSelectionBelow, cx);
5453 assert_eq!(
5454 view.selected_display_ranges(cx),
5455 vec![
5456 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5457 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5458 ]
5459 );
5460 });
5461
5462 view.update(cx, |view, cx| {
5463 view.add_selection_below(&AddSelectionBelow, cx);
5464 assert_eq!(
5465 view.selected_display_ranges(cx),
5466 vec![
5467 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5468 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5469 ]
5470 );
5471 });
5472
5473 view.update(cx, |view, cx| {
5474 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5475 .unwrap();
5476 });
5477 view.update(cx, |view, cx| {
5478 view.add_selection_below(&AddSelectionBelow, cx);
5479 assert_eq!(
5480 view.selected_display_ranges(cx),
5481 vec![
5482 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5483 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5484 ]
5485 );
5486 });
5487
5488 view.update(cx, |view, cx| {
5489 view.add_selection_below(&AddSelectionBelow, cx);
5490 assert_eq!(
5491 view.selected_display_ranges(cx),
5492 vec![
5493 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5494 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5495 ]
5496 );
5497 });
5498
5499 view.update(cx, |view, cx| {
5500 view.add_selection_above(&AddSelectionAbove, cx);
5501 assert_eq!(
5502 view.selected_display_ranges(cx),
5503 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5504 );
5505 });
5506
5507 view.update(cx, |view, cx| {
5508 view.add_selection_above(&AddSelectionAbove, cx);
5509 assert_eq!(
5510 view.selected_display_ranges(cx),
5511 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5512 );
5513 });
5514
5515 view.update(cx, |view, cx| {
5516 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5517 .unwrap();
5518 view.add_selection_below(&AddSelectionBelow, cx);
5519 assert_eq!(
5520 view.selected_display_ranges(cx),
5521 vec![
5522 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5523 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5524 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5525 ]
5526 );
5527 });
5528
5529 view.update(cx, |view, cx| {
5530 view.add_selection_below(&AddSelectionBelow, cx);
5531 assert_eq!(
5532 view.selected_display_ranges(cx),
5533 vec![
5534 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5535 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5536 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5537 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5538 ]
5539 );
5540 });
5541
5542 view.update(cx, |view, cx| {
5543 view.add_selection_above(&AddSelectionAbove, cx);
5544 assert_eq!(
5545 view.selected_display_ranges(cx),
5546 vec![
5547 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5548 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5549 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5550 ]
5551 );
5552 });
5553
5554 view.update(cx, |view, cx| {
5555 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5556 .unwrap();
5557 });
5558 view.update(cx, |view, cx| {
5559 view.add_selection_above(&AddSelectionAbove, cx);
5560 assert_eq!(
5561 view.selected_display_ranges(cx),
5562 vec![
5563 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5564 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5565 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5566 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5567 ]
5568 );
5569 });
5570
5571 view.update(cx, |view, cx| {
5572 view.add_selection_below(&AddSelectionBelow, cx);
5573 assert_eq!(
5574 view.selected_display_ranges(cx),
5575 vec![
5576 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5577 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5578 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5579 ]
5580 );
5581 });
5582 }
5583
5584 #[gpui::test]
5585 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5586 let settings = cx.read(EditorSettings::test);
5587 let language = Some(Arc::new(Language::new(
5588 LanguageConfig::default(),
5589 Some(tree_sitter_rust::language()),
5590 )));
5591
5592 let text = r#"
5593 use mod1::mod2::{mod3, mod4};
5594
5595 fn fn_1(param1: bool, param2: &str) {
5596 let var1 = "text";
5597 }
5598 "#
5599 .unindent();
5600
5601 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5602 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5603 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5604 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5605 .await;
5606
5607 view.update(&mut cx, |view, cx| {
5608 view.select_display_ranges(
5609 &[
5610 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5611 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5612 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5613 ],
5614 cx,
5615 )
5616 .unwrap();
5617 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5618 });
5619 assert_eq!(
5620 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5621 &[
5622 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5623 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5624 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5625 ]
5626 );
5627
5628 view.update(&mut cx, |view, cx| {
5629 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5630 });
5631 assert_eq!(
5632 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5633 &[
5634 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5635 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5636 ]
5637 );
5638
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 // Trying to expand the selected syntax node one more time has no effect.
5648 view.update(&mut cx, |view, cx| {
5649 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5650 });
5651 assert_eq!(
5652 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5653 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5654 );
5655
5656 view.update(&mut cx, |view, cx| {
5657 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5658 });
5659 assert_eq!(
5660 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5661 &[
5662 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5663 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5664 ]
5665 );
5666
5667 view.update(&mut cx, |view, cx| {
5668 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5669 });
5670 assert_eq!(
5671 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5672 &[
5673 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5674 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5675 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5676 ]
5677 );
5678
5679 view.update(&mut cx, |view, cx| {
5680 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5681 });
5682 assert_eq!(
5683 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5684 &[
5685 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5686 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5687 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5688 ]
5689 );
5690
5691 // Trying to shrink the selected syntax node one more time has no effect.
5692 view.update(&mut cx, |view, cx| {
5693 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5694 });
5695 assert_eq!(
5696 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5697 &[
5698 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5699 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5700 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5701 ]
5702 );
5703
5704 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5705 // a fold.
5706 view.update(&mut cx, |view, cx| {
5707 view.fold_ranges(
5708 vec![
5709 Point::new(0, 21)..Point::new(0, 24),
5710 Point::new(3, 20)..Point::new(3, 22),
5711 ],
5712 cx,
5713 );
5714 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5715 });
5716 assert_eq!(
5717 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5718 &[
5719 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5720 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5721 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5722 ]
5723 );
5724 }
5725
5726 #[gpui::test]
5727 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5728 let settings = cx.read(EditorSettings::test);
5729 let language = Some(Arc::new(
5730 Language::new(
5731 LanguageConfig {
5732 brackets: vec![
5733 BracketPair {
5734 start: "{".to_string(),
5735 end: "}".to_string(),
5736 close: false,
5737 newline: true,
5738 },
5739 BracketPair {
5740 start: "(".to_string(),
5741 end: ")".to_string(),
5742 close: false,
5743 newline: true,
5744 },
5745 ],
5746 ..Default::default()
5747 },
5748 Some(tree_sitter_rust::language()),
5749 )
5750 .with_indents_query(
5751 r#"
5752 (_ "(" ")" @end) @indent
5753 (_ "{" "}" @end) @indent
5754 "#,
5755 )
5756 .unwrap(),
5757 ));
5758
5759 let text = "fn a() {}";
5760
5761 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5762 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5763 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5764 editor
5765 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5766 .await;
5767
5768 editor.update(&mut cx, |editor, cx| {
5769 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5770 editor.newline(&Newline, cx);
5771 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5772 assert_eq!(
5773 editor.selected_ranges(cx),
5774 &[
5775 Point::new(1, 4)..Point::new(1, 4),
5776 Point::new(3, 4)..Point::new(3, 4),
5777 Point::new(5, 0)..Point::new(5, 0)
5778 ]
5779 );
5780 });
5781 }
5782
5783 #[gpui::test]
5784 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5785 let settings = cx.read(EditorSettings::test);
5786 let language = Some(Arc::new(Language::new(
5787 LanguageConfig {
5788 brackets: vec![
5789 BracketPair {
5790 start: "{".to_string(),
5791 end: "}".to_string(),
5792 close: true,
5793 newline: true,
5794 },
5795 BracketPair {
5796 start: "/*".to_string(),
5797 end: " */".to_string(),
5798 close: true,
5799 newline: true,
5800 },
5801 ],
5802 ..Default::default()
5803 },
5804 Some(tree_sitter_rust::language()),
5805 )));
5806
5807 let text = r#"
5808 a
5809
5810 /
5811
5812 "#
5813 .unindent();
5814
5815 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5816 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5817 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5818 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5819 .await;
5820
5821 view.update(&mut cx, |view, cx| {
5822 view.select_display_ranges(
5823 &[
5824 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5825 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5826 ],
5827 cx,
5828 )
5829 .unwrap();
5830 view.handle_input(&Input("{".to_string()), cx);
5831 view.handle_input(&Input("{".to_string()), cx);
5832 view.handle_input(&Input("{".to_string()), cx);
5833 assert_eq!(
5834 view.text(cx),
5835 "
5836 {{{}}}
5837 {{{}}}
5838 /
5839
5840 "
5841 .unindent()
5842 );
5843
5844 view.move_right(&MoveRight, cx);
5845 view.handle_input(&Input("}".to_string()), cx);
5846 view.handle_input(&Input("}".to_string()), cx);
5847 view.handle_input(&Input("}".to_string()), cx);
5848 assert_eq!(
5849 view.text(cx),
5850 "
5851 {{{}}}}
5852 {{{}}}}
5853 /
5854
5855 "
5856 .unindent()
5857 );
5858
5859 view.undo(&Undo, cx);
5860 view.handle_input(&Input("/".to_string()), cx);
5861 view.handle_input(&Input("*".to_string()), cx);
5862 assert_eq!(
5863 view.text(cx),
5864 "
5865 /* */
5866 /* */
5867 /
5868
5869 "
5870 .unindent()
5871 );
5872
5873 view.undo(&Undo, cx);
5874 view.select_display_ranges(
5875 &[
5876 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5877 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5878 ],
5879 cx,
5880 )
5881 .unwrap();
5882 view.handle_input(&Input("*".to_string()), cx);
5883 assert_eq!(
5884 view.text(cx),
5885 "
5886 a
5887
5888 /*
5889 *
5890 "
5891 .unindent()
5892 );
5893 });
5894 }
5895
5896 #[gpui::test]
5897 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5898 let settings = cx.read(EditorSettings::test);
5899 let language = Some(Arc::new(Language::new(
5900 LanguageConfig {
5901 line_comment: Some("// ".to_string()),
5902 ..Default::default()
5903 },
5904 Some(tree_sitter_rust::language()),
5905 )));
5906
5907 let text = "
5908 fn a() {
5909 //b();
5910 // c();
5911 // d();
5912 }
5913 "
5914 .unindent();
5915
5916 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5917 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5918 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5919
5920 view.update(&mut cx, |editor, cx| {
5921 // If multiple selections intersect a line, the line is only
5922 // toggled once.
5923 editor
5924 .select_display_ranges(
5925 &[
5926 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5927 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5928 ],
5929 cx,
5930 )
5931 .unwrap();
5932 editor.toggle_comments(&ToggleComments, cx);
5933 assert_eq!(
5934 editor.text(cx),
5935 "
5936 fn a() {
5937 b();
5938 c();
5939 d();
5940 }
5941 "
5942 .unindent()
5943 );
5944
5945 // The comment prefix is inserted at the same column for every line
5946 // in a selection.
5947 editor
5948 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5949 .unwrap();
5950 editor.toggle_comments(&ToggleComments, cx);
5951 assert_eq!(
5952 editor.text(cx),
5953 "
5954 fn a() {
5955 // b();
5956 // c();
5957 // d();
5958 }
5959 "
5960 .unindent()
5961 );
5962
5963 // If a selection ends at the beginning of a line, that line is not toggled.
5964 editor
5965 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5966 .unwrap();
5967 editor.toggle_comments(&ToggleComments, cx);
5968 assert_eq!(
5969 editor.text(cx),
5970 "
5971 fn a() {
5972 // b();
5973 c();
5974 // d();
5975 }
5976 "
5977 .unindent()
5978 );
5979 });
5980 }
5981
5982 #[gpui::test]
5983 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
5984 let settings = EditorSettings::test(cx);
5985 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
5986 let multibuffer = cx.add_model(|cx| {
5987 let mut multibuffer = MultiBuffer::new(0);
5988 multibuffer.push_excerpt(
5989 ExcerptProperties {
5990 buffer: &buffer,
5991 range: Point::new(0, 0)..Point::new(0, 4),
5992 },
5993 cx,
5994 );
5995 multibuffer.push_excerpt(
5996 ExcerptProperties {
5997 buffer: &buffer,
5998 range: Point::new(1, 0)..Point::new(1, 4),
5999 },
6000 cx,
6001 );
6002 multibuffer
6003 });
6004
6005 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6006
6007 let (_, view) = cx.add_window(Default::default(), |cx| {
6008 build_editor(multibuffer, settings, cx)
6009 });
6010 view.update(cx, |view, cx| {
6011 view.select_display_ranges(
6012 &[
6013 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6014 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6015 ],
6016 cx,
6017 )
6018 .unwrap();
6019
6020 view.handle_input(&Input("X".to_string()), cx);
6021 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6022 assert_eq!(
6023 view.selected_display_ranges(cx),
6024 &[
6025 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6026 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6027 ]
6028 )
6029 });
6030 }
6031
6032 #[gpui::test]
6033 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6034 let settings = EditorSettings::test(cx);
6035 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6036 let multibuffer = cx.add_model(|cx| {
6037 let mut multibuffer = MultiBuffer::new(0);
6038 multibuffer.push_excerpt(
6039 ExcerptProperties {
6040 buffer: &buffer,
6041 range: Point::new(0, 0)..Point::new(1, 4),
6042 },
6043 cx,
6044 );
6045 multibuffer.push_excerpt(
6046 ExcerptProperties {
6047 buffer: &buffer,
6048 range: Point::new(1, 0)..Point::new(2, 4),
6049 },
6050 cx,
6051 );
6052 multibuffer
6053 });
6054
6055 assert_eq!(
6056 multibuffer.read(cx).read(cx).text(),
6057 "aaaa\nbbbb\nbbbb\ncccc"
6058 );
6059
6060 let (_, view) = cx.add_window(Default::default(), |cx| {
6061 build_editor(multibuffer, settings, cx)
6062 });
6063 view.update(cx, |view, cx| {
6064 view.select_display_ranges(
6065 &[
6066 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6067 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6068 ],
6069 cx,
6070 )
6071 .unwrap();
6072
6073 view.handle_input(&Input("X".to_string()), cx);
6074 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6075 assert_eq!(
6076 view.selected_display_ranges(cx),
6077 &[
6078 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6079 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6080 ]
6081 )
6082 });
6083 }
6084
6085 #[gpui::test]
6086 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6087 let settings = cx.read(EditorSettings::test);
6088 let language = Some(Arc::new(Language::new(
6089 LanguageConfig {
6090 brackets: vec![
6091 BracketPair {
6092 start: "{".to_string(),
6093 end: "}".to_string(),
6094 close: true,
6095 newline: true,
6096 },
6097 BracketPair {
6098 start: "/* ".to_string(),
6099 end: " */".to_string(),
6100 close: true,
6101 newline: true,
6102 },
6103 ],
6104 ..Default::default()
6105 },
6106 Some(tree_sitter_rust::language()),
6107 )));
6108
6109 let text = concat!(
6110 "{ }\n", // Suppress rustfmt
6111 " x\n", //
6112 " /* */\n", //
6113 "x\n", //
6114 "{{} }\n", //
6115 );
6116
6117 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6118 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6119 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6120 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6121 .await;
6122
6123 view.update(&mut cx, |view, cx| {
6124 view.select_display_ranges(
6125 &[
6126 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6127 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6128 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6129 ],
6130 cx,
6131 )
6132 .unwrap();
6133 view.newline(&Newline, cx);
6134
6135 assert_eq!(
6136 view.buffer().read(cx).read(cx).text(),
6137 concat!(
6138 "{ \n", // Suppress rustfmt
6139 "\n", //
6140 "}\n", //
6141 " x\n", //
6142 " /* \n", //
6143 " \n", //
6144 " */\n", //
6145 "x\n", //
6146 "{{} \n", //
6147 "}\n", //
6148 )
6149 );
6150 });
6151 }
6152
6153 impl Editor {
6154 fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
6155 &self,
6156 cx: &mut MutableAppContext,
6157 ) -> Vec<Range<D>> {
6158 self.local_selections::<D>(cx)
6159 .iter()
6160 .map(|s| {
6161 if s.reversed {
6162 s.end.clone()..s.start.clone()
6163 } else {
6164 s.start.clone()..s.end.clone()
6165 }
6166 })
6167 .collect()
6168 }
6169
6170 fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
6171 let display_map = self
6172 .display_map
6173 .update(cx, |display_map, cx| display_map.snapshot(cx));
6174 self.selections
6175 .iter()
6176 .chain(
6177 self.pending_selection
6178 .as_ref()
6179 .map(|pending| &pending.selection),
6180 )
6181 .map(|s| {
6182 if s.reversed {
6183 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
6184 } else {
6185 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
6186 }
6187 })
6188 .collect()
6189 }
6190 }
6191
6192 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6193 let point = DisplayPoint::new(row as u32, column as u32);
6194 point..point
6195 }
6196
6197 fn build_editor(
6198 buffer: ModelHandle<MultiBuffer>,
6199 settings: EditorSettings,
6200 cx: &mut ViewContext<Editor>,
6201 ) -> Editor {
6202 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6203 }
6204}
6205
6206trait RangeExt<T> {
6207 fn sorted(&self) -> Range<T>;
6208 fn to_inclusive(&self) -> RangeInclusive<T>;
6209}
6210
6211impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6212 fn sorted(&self) -> Self {
6213 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6214 }
6215
6216 fn to_inclusive(&self) -> RangeInclusive<T> {
6217 self.start.clone()..=self.end.clone()
6218 }
6219}