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