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 mut 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 selections.sort_unstable_by_key(|s| s.start);
1128 self.update_selections(selections, autoscroll, cx);
1129 }
1130
1131 #[cfg(test)]
1132 fn select_display_ranges<'a, T>(
1133 &mut self,
1134 ranges: T,
1135 cx: &mut ViewContext<Self>,
1136 ) -> anyhow::Result<()>
1137 where
1138 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1139 {
1140 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1141 let selections = ranges
1142 .into_iter()
1143 .map(|range| {
1144 let mut start = range.start;
1145 let mut end = range.end;
1146 let reversed = if start > end {
1147 mem::swap(&mut start, &mut end);
1148 true
1149 } else {
1150 false
1151 };
1152 Selection {
1153 id: post_inc(&mut self.next_selection_id),
1154 start: start.to_point(&display_map),
1155 end: end.to_point(&display_map),
1156 reversed,
1157 goal: SelectionGoal::None,
1158 }
1159 })
1160 .collect();
1161 self.update_selections(selections, None, cx);
1162 Ok(())
1163 }
1164
1165 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1166 let text = action.0.as_ref();
1167 if !self.skip_autoclose_end(text, cx) {
1168 self.start_transaction(cx);
1169 self.insert(text, cx);
1170 self.autoclose_pairs(cx);
1171 self.end_transaction(cx);
1172 }
1173 }
1174
1175 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1176 self.start_transaction(cx);
1177 let mut old_selections = SmallVec::<[_; 32]>::new();
1178 {
1179 let selections = self.local_selections::<Point>(cx);
1180 let buffer = self.buffer.read(cx).snapshot(cx);
1181 for selection in selections.iter() {
1182 let start_point = selection.start;
1183 let indent = buffer
1184 .indent_column_for_line(start_point.row)
1185 .min(start_point.column);
1186 let start = selection.start.to_offset(&buffer);
1187 let end = selection.end.to_offset(&buffer);
1188
1189 let mut insert_extra_newline = false;
1190 if let Some(language) = buffer.language() {
1191 let leading_whitespace_len = buffer
1192 .reversed_chars_at(start)
1193 .take_while(|c| c.is_whitespace() && *c != '\n')
1194 .map(|c| c.len_utf8())
1195 .sum::<usize>();
1196
1197 let trailing_whitespace_len = buffer
1198 .chars_at(end)
1199 .take_while(|c| c.is_whitespace() && *c != '\n')
1200 .map(|c| c.len_utf8())
1201 .sum::<usize>();
1202
1203 insert_extra_newline = language.brackets().iter().any(|pair| {
1204 let pair_start = pair.start.trim_end();
1205 let pair_end = pair.end.trim_start();
1206
1207 pair.newline
1208 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1209 && buffer.contains_str_at(
1210 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1211 pair_start,
1212 )
1213 });
1214 }
1215
1216 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1217 }
1218 }
1219
1220 let mut new_selections = Vec::with_capacity(old_selections.len());
1221 self.buffer.update(cx, |buffer, cx| {
1222 let mut delta = 0_isize;
1223 let mut pending_edit: Option<PendingEdit> = None;
1224 for (_, range, indent, insert_extra_newline) in &old_selections {
1225 if pending_edit.as_ref().map_or(false, |pending| {
1226 pending.indent != *indent
1227 || pending.insert_extra_newline != *insert_extra_newline
1228 }) {
1229 let pending = pending_edit.take().unwrap();
1230 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1231 new_text.push('\n');
1232 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1233 if pending.insert_extra_newline {
1234 new_text = new_text.repeat(2);
1235 }
1236 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1237 delta += pending.delta;
1238 }
1239
1240 let start = (range.start as isize + delta) as usize;
1241 let end = (range.end as isize + delta) as usize;
1242 let mut text_len = *indent as usize + 1;
1243 if *insert_extra_newline {
1244 text_len *= 2;
1245 }
1246
1247 let pending = pending_edit.get_or_insert_with(Default::default);
1248 pending.delta += text_len as isize - (end - start) as isize;
1249 pending.indent = *indent;
1250 pending.insert_extra_newline = *insert_extra_newline;
1251 pending.ranges.push(start..end);
1252 }
1253
1254 let pending = pending_edit.unwrap();
1255 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1256 new_text.push('\n');
1257 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1258 if pending.insert_extra_newline {
1259 new_text = new_text.repeat(2);
1260 }
1261 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1262
1263 let mut delta = 0_isize;
1264 new_selections.extend(old_selections.into_iter().map(
1265 |(id, range, indent, insert_extra_newline)| {
1266 let start = (range.start as isize + delta) as usize;
1267 let end = (range.end as isize + delta) as usize;
1268 let text_before_cursor_len = indent as usize + 1;
1269 let cursor = start + text_before_cursor_len;
1270 let text_len = if insert_extra_newline {
1271 text_before_cursor_len * 2
1272 } else {
1273 text_before_cursor_len
1274 };
1275 delta += text_len as isize - (end - start) as isize;
1276 Selection {
1277 id,
1278 start: cursor,
1279 end: cursor,
1280 reversed: false,
1281 goal: SelectionGoal::None,
1282 }
1283 },
1284 ))
1285 });
1286
1287 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1288 self.end_transaction(cx);
1289
1290 #[derive(Default)]
1291 struct PendingEdit {
1292 indent: u32,
1293 insert_extra_newline: bool,
1294 delta: isize,
1295 ranges: SmallVec<[Range<usize>; 32]>,
1296 }
1297 }
1298
1299 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1300 self.start_transaction(cx);
1301 let old_selections = self.local_selections::<usize>(cx);
1302 self.buffer.update(cx, |buffer, cx| {
1303 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1304 buffer.edit_with_autoindent(edit_ranges, text, cx);
1305 });
1306
1307 let selections = self.local_selections::<usize>(cx);
1308 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1309 self.end_transaction(cx);
1310 }
1311
1312 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1313 let selections = self.local_selections::<usize>(cx);
1314 let mut bracket_pair_state = None;
1315 let mut new_selections = None;
1316 self.buffer.update(cx, |buffer, cx| {
1317 let mut snapshot = buffer.snapshot(cx);
1318 let left_biased_selections = selections
1319 .iter()
1320 .map(|selection| Selection {
1321 id: selection.id,
1322 start: snapshot.anchor_before(selection.start),
1323 end: snapshot.anchor_before(selection.end),
1324 reversed: selection.reversed,
1325 goal: selection.goal,
1326 })
1327 .collect::<Vec<_>>();
1328
1329 let autoclose_pair = snapshot.language().and_then(|language| {
1330 let first_selection_start = selections.first().unwrap().start;
1331 let pair = language.brackets().iter().find(|pair| {
1332 snapshot.contains_str_at(
1333 first_selection_start.saturating_sub(pair.start.len()),
1334 &pair.start,
1335 )
1336 });
1337 pair.and_then(|pair| {
1338 let should_autoclose = selections[1..].iter().all(|selection| {
1339 snapshot.contains_str_at(
1340 selection.start.saturating_sub(pair.start.len()),
1341 &pair.start,
1342 )
1343 });
1344
1345 if should_autoclose {
1346 Some(pair.clone())
1347 } else {
1348 None
1349 }
1350 })
1351 });
1352
1353 if let Some(pair) = autoclose_pair {
1354 let selection_ranges = selections
1355 .iter()
1356 .map(|selection| {
1357 let start = selection.start.to_offset(&snapshot);
1358 start..start
1359 })
1360 .collect::<SmallVec<[_; 32]>>();
1361
1362 buffer.edit(selection_ranges, &pair.end, cx);
1363 snapshot = buffer.snapshot(cx);
1364
1365 new_selections = Some(
1366 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1367 .collect::<Vec<_>>(),
1368 );
1369
1370 if pair.end.len() == 1 {
1371 let mut delta = 0;
1372 bracket_pair_state = Some(BracketPairState {
1373 ranges: selections
1374 .iter()
1375 .map(move |selection| {
1376 let offset = selection.start + delta;
1377 delta += 1;
1378 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1379 })
1380 .collect(),
1381 pair,
1382 });
1383 }
1384 }
1385 });
1386
1387 if let Some(new_selections) = new_selections {
1388 self.update_selections(new_selections, None, cx);
1389 }
1390 if let Some(bracket_pair_state) = bracket_pair_state {
1391 self.autoclose_stack.push(bracket_pair_state);
1392 }
1393 }
1394
1395 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1396 let old_selections = self.local_selections::<usize>(cx);
1397 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1398 autoclose_pair
1399 } else {
1400 return false;
1401 };
1402 if text != autoclose_pair.pair.end {
1403 return false;
1404 }
1405
1406 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1407
1408 let buffer = self.buffer.read(cx).snapshot(cx);
1409 if old_selections
1410 .iter()
1411 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1412 .all(|(selection, autoclose_range)| {
1413 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1414 selection.is_empty() && selection.start == autoclose_range_end
1415 })
1416 {
1417 let new_selections = old_selections
1418 .into_iter()
1419 .map(|selection| {
1420 let cursor = selection.start + 1;
1421 Selection {
1422 id: selection.id,
1423 start: cursor,
1424 end: cursor,
1425 reversed: false,
1426 goal: SelectionGoal::None,
1427 }
1428 })
1429 .collect();
1430 self.autoclose_stack.pop();
1431 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1432 true
1433 } else {
1434 false
1435 }
1436 }
1437
1438 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1439 self.start_transaction(cx);
1440 self.select_all(&SelectAll, cx);
1441 self.insert("", cx);
1442 self.end_transaction(cx);
1443 }
1444
1445 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1446 self.start_transaction(cx);
1447 let mut selections = self.local_selections::<Point>(cx);
1448 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1449 for selection in &mut selections {
1450 if selection.is_empty() {
1451 let head = selection.head().to_display_point(&display_map);
1452 let cursor = movement::left(&display_map, head)
1453 .unwrap()
1454 .to_point(&display_map);
1455 selection.set_head(cursor);
1456 selection.goal = SelectionGoal::None;
1457 }
1458 }
1459 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1460 self.insert("", cx);
1461 self.end_transaction(cx);
1462 }
1463
1464 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1465 self.start_transaction(cx);
1466 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1467 let mut selections = self.local_selections::<Point>(cx);
1468 for selection in &mut selections {
1469 if selection.is_empty() {
1470 let head = selection.head().to_display_point(&display_map);
1471 let cursor = movement::right(&display_map, head)
1472 .unwrap()
1473 .to_point(&display_map);
1474 selection.set_head(cursor);
1475 selection.goal = SelectionGoal::None;
1476 }
1477 }
1478 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1479 self.insert(&"", cx);
1480 self.end_transaction(cx);
1481 }
1482
1483 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1484 self.start_transaction(cx);
1485 let tab_size = (self.build_settings)(cx).tab_size;
1486 let mut selections = self.local_selections::<Point>(cx);
1487 let mut last_indent = None;
1488 self.buffer.update(cx, |buffer, cx| {
1489 for selection in &mut selections {
1490 if selection.is_empty() {
1491 let char_column = buffer
1492 .read(cx)
1493 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1494 .flat_map(str::chars)
1495 .count();
1496 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1497 buffer.edit(
1498 [selection.start..selection.start],
1499 " ".repeat(chars_to_next_tab_stop),
1500 cx,
1501 );
1502 selection.start.column += chars_to_next_tab_stop as u32;
1503 selection.end = selection.start;
1504 } else {
1505 let mut start_row = selection.start.row;
1506 let mut end_row = selection.end.row + 1;
1507
1508 // If a selection ends at the beginning of a line, don't indent
1509 // that last line.
1510 if selection.end.column == 0 {
1511 end_row -= 1;
1512 }
1513
1514 // Avoid re-indenting a row that has already been indented by a
1515 // previous selection, but still update this selection's column
1516 // to reflect that indentation.
1517 if let Some((last_indent_row, last_indent_len)) = last_indent {
1518 if last_indent_row == selection.start.row {
1519 selection.start.column += last_indent_len;
1520 start_row += 1;
1521 }
1522 if last_indent_row == selection.end.row {
1523 selection.end.column += last_indent_len;
1524 }
1525 }
1526
1527 for row in start_row..end_row {
1528 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1529 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1530 let row_start = Point::new(row, 0);
1531 buffer.edit(
1532 [row_start..row_start],
1533 " ".repeat(columns_to_next_tab_stop),
1534 cx,
1535 );
1536
1537 // Update this selection's endpoints to reflect the indentation.
1538 if row == selection.start.row {
1539 selection.start.column += columns_to_next_tab_stop as u32;
1540 }
1541 if row == selection.end.row {
1542 selection.end.column += columns_to_next_tab_stop as u32;
1543 }
1544
1545 last_indent = Some((row, columns_to_next_tab_stop as u32));
1546 }
1547 }
1548 }
1549 });
1550
1551 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1552 self.end_transaction(cx);
1553 }
1554
1555 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1556 self.start_transaction(cx);
1557 let tab_size = (self.build_settings)(cx).tab_size;
1558 let selections = self.local_selections::<Point>(cx);
1559 let mut deletion_ranges = Vec::new();
1560 let mut last_outdent = None;
1561 {
1562 let buffer = self.buffer.read(cx).read(cx);
1563 for selection in &selections {
1564 let mut start_row = selection.start.row;
1565 let mut end_row = selection.end.row + 1;
1566
1567 // If a selection ends at the beginning of a line, don't indent
1568 // that last line.
1569 if selection.end.column == 0 {
1570 end_row -= 1;
1571 }
1572
1573 // Avoid re-outdenting a row that has already been outdented by a
1574 // previous selection.
1575 if let Some(last_row) = last_outdent {
1576 if last_row == selection.start.row {
1577 start_row += 1;
1578 }
1579 }
1580
1581 for row in start_row..end_row {
1582 let column = buffer.indent_column_for_line(row) as usize;
1583 if column > 0 {
1584 let mut deletion_len = (column % tab_size) as u32;
1585 if deletion_len == 0 {
1586 deletion_len = tab_size as u32;
1587 }
1588 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1589 last_outdent = Some(row);
1590 }
1591 }
1592 }
1593 }
1594 self.buffer.update(cx, |buffer, cx| {
1595 buffer.edit(deletion_ranges, "", cx);
1596 });
1597
1598 self.update_selections(
1599 self.local_selections::<usize>(cx),
1600 Some(Autoscroll::Fit),
1601 cx,
1602 );
1603 self.end_transaction(cx);
1604 }
1605
1606 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1607 self.start_transaction(cx);
1608
1609 let selections = self.local_selections::<Point>(cx);
1610 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1611 let buffer = self.buffer.read(cx).snapshot(cx);
1612
1613 let mut new_cursors = Vec::new();
1614 let mut edit_ranges = Vec::new();
1615 let mut selections = selections.iter().peekable();
1616 while let Some(selection) = selections.next() {
1617 let mut rows = selection.spanned_rows(false, &display_map);
1618 let goal_display_column = selection.head().to_display_point(&display_map).column();
1619
1620 // Accumulate contiguous regions of rows that we want to delete.
1621 while let Some(next_selection) = selections.peek() {
1622 let next_rows = next_selection.spanned_rows(false, &display_map);
1623 if next_rows.start <= rows.end {
1624 rows.end = next_rows.end;
1625 selections.next().unwrap();
1626 } else {
1627 break;
1628 }
1629 }
1630
1631 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1632 let edit_end;
1633 let cursor_buffer_row;
1634 if buffer.max_point().row >= rows.end {
1635 // If there's a line after the range, delete the \n from the end of the row range
1636 // and position the cursor on the next line.
1637 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1638 cursor_buffer_row = rows.end;
1639 } else {
1640 // If there isn't a line after the range, delete the \n from the line before the
1641 // start of the row range and position the cursor there.
1642 edit_start = edit_start.saturating_sub(1);
1643 edit_end = buffer.len();
1644 cursor_buffer_row = rows.start.saturating_sub(1);
1645 }
1646
1647 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1648 *cursor.column_mut() =
1649 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1650
1651 new_cursors.push((
1652 selection.id,
1653 buffer.anchor_after(cursor.to_point(&display_map)),
1654 ));
1655 edit_ranges.push(edit_start..edit_end);
1656 }
1657
1658 new_cursors.sort_unstable_by(|a, b| a.1.cmp(&b.1, &buffer).unwrap());
1659 let buffer = self.buffer.update(cx, |buffer, cx| {
1660 buffer.edit(edit_ranges, "", cx);
1661 buffer.snapshot(cx)
1662 });
1663 let new_selections = new_cursors
1664 .into_iter()
1665 .map(|(id, cursor)| {
1666 let cursor = cursor.to_point(&buffer);
1667 Selection {
1668 id,
1669 start: cursor,
1670 end: cursor,
1671 reversed: false,
1672 goal: SelectionGoal::None,
1673 }
1674 })
1675 .collect();
1676 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1677 self.end_transaction(cx);
1678 }
1679
1680 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1681 self.start_transaction(cx);
1682
1683 let selections = self.local_selections::<Point>(cx);
1684 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1685 let buffer = &display_map.buffer_snapshot;
1686
1687 let mut edits = Vec::new();
1688 let mut selections_iter = selections.iter().peekable();
1689 while let Some(selection) = selections_iter.next() {
1690 // Avoid duplicating the same lines twice.
1691 let mut rows = selection.spanned_rows(false, &display_map);
1692
1693 while let Some(next_selection) = selections_iter.peek() {
1694 let next_rows = next_selection.spanned_rows(false, &display_map);
1695 if next_rows.start <= rows.end - 1 {
1696 rows.end = next_rows.end;
1697 selections_iter.next().unwrap();
1698 } else {
1699 break;
1700 }
1701 }
1702
1703 // Copy the text from the selected row region and splice it at the start of the region.
1704 let start = Point::new(rows.start, 0);
1705 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1706 let text = buffer
1707 .text_for_range(start..end)
1708 .chain(Some("\n"))
1709 .collect::<String>();
1710 edits.push((start, text, rows.len() as u32));
1711 }
1712
1713 self.buffer.update(cx, |buffer, cx| {
1714 for (point, text, _) in edits.into_iter().rev() {
1715 buffer.edit(Some(point..point), text, cx);
1716 }
1717 });
1718
1719 self.request_autoscroll(Autoscroll::Fit, cx);
1720 self.end_transaction(cx);
1721 }
1722
1723 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1724 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1725 let buffer = self.buffer.read(cx).snapshot(cx);
1726
1727 let mut edits = Vec::new();
1728 let mut unfold_ranges = Vec::new();
1729 let mut refold_ranges = Vec::new();
1730
1731 let selections = self.local_selections::<Point>(cx);
1732 let mut selections = selections.iter().peekable();
1733 let mut contiguous_row_selections = Vec::new();
1734 let mut new_selections = Vec::new();
1735
1736 while let Some(selection) = selections.next() {
1737 // Find all the selections that span a contiguous row range
1738 contiguous_row_selections.push(selection.clone());
1739 let start_row = selection.start.row;
1740 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1741 display_map.next_line_boundary(selection.end).0.row + 1
1742 } else {
1743 selection.end.row
1744 };
1745
1746 while let Some(next_selection) = selections.peek() {
1747 if next_selection.start.row <= end_row {
1748 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1749 display_map.next_line_boundary(next_selection.end).0.row + 1
1750 } else {
1751 next_selection.end.row
1752 };
1753 contiguous_row_selections.push(selections.next().unwrap().clone());
1754 } else {
1755 break;
1756 }
1757 }
1758
1759 // Move the text spanned by the row range to be before the line preceding the row range
1760 if start_row > 0 {
1761 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1762 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1763 let insertion_point = display_map
1764 .prev_line_boundary(Point::new(start_row - 1, 0))
1765 .0;
1766
1767 // Don't move lines across excerpts
1768 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1769 let text = buffer
1770 .text_for_range(range_to_move.clone())
1771 .flat_map(|s| s.chars())
1772 .skip(1)
1773 .chain(['\n'])
1774 .collect::<String>();
1775
1776 edits.push((
1777 buffer.anchor_after(range_to_move.start)
1778 ..buffer.anchor_before(range_to_move.end),
1779 String::new(),
1780 ));
1781 let insertion_anchor = buffer.anchor_after(insertion_point);
1782 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1783
1784 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1785
1786 // Move selections up
1787 new_selections.extend(contiguous_row_selections.drain(..).map(
1788 |mut selection| {
1789 selection.start.row -= row_delta;
1790 selection.end.row -= row_delta;
1791 selection
1792 },
1793 ));
1794
1795 // Move folds up
1796 unfold_ranges.push(range_to_move.clone());
1797 for fold in display_map.folds_in_range(
1798 buffer.anchor_before(range_to_move.start)
1799 ..buffer.anchor_after(range_to_move.end),
1800 ) {
1801 let mut start = fold.start.to_point(&buffer);
1802 let mut end = fold.end.to_point(&buffer);
1803 start.row -= row_delta;
1804 end.row -= row_delta;
1805 refold_ranges.push(start..end);
1806 }
1807 }
1808 }
1809
1810 // If we didn't move line(s), preserve the existing selections
1811 new_selections.extend(contiguous_row_selections.drain(..));
1812 }
1813
1814 self.start_transaction(cx);
1815 self.unfold_ranges(unfold_ranges, cx);
1816 self.buffer.update(cx, |buffer, cx| {
1817 for (range, text) in edits {
1818 buffer.edit([range], text, cx);
1819 }
1820 });
1821 self.fold_ranges(refold_ranges, cx);
1822 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1823 self.end_transaction(cx);
1824 }
1825
1826 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1827 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1828 let buffer = self.buffer.read(cx).snapshot(cx);
1829
1830 let mut edits = Vec::new();
1831 let mut unfold_ranges = Vec::new();
1832 let mut refold_ranges = Vec::new();
1833
1834 let selections = self.local_selections::<Point>(cx);
1835 let mut selections = selections.iter().peekable();
1836 let mut contiguous_row_selections = Vec::new();
1837 let mut new_selections = Vec::new();
1838
1839 while let Some(selection) = selections.next() {
1840 // Find all the selections that span a contiguous row range
1841 contiguous_row_selections.push(selection.clone());
1842 let start_row = selection.start.row;
1843 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1844 display_map.next_line_boundary(selection.end).0.row + 1
1845 } else {
1846 selection.end.row
1847 };
1848
1849 while let Some(next_selection) = selections.peek() {
1850 if next_selection.start.row <= end_row {
1851 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1852 display_map.next_line_boundary(next_selection.end).0.row + 1
1853 } else {
1854 next_selection.end.row
1855 };
1856 contiguous_row_selections.push(selections.next().unwrap().clone());
1857 } else {
1858 break;
1859 }
1860 }
1861
1862 // Move the text spanned by the row range to be after the last line of the row range
1863 if end_row <= buffer.max_point().row {
1864 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1865 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
1866
1867 // Don't move lines across excerpt boundaries
1868 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
1869 let mut text = String::from("\n");
1870 text.extend(buffer.text_for_range(range_to_move.clone()));
1871 text.pop(); // Drop trailing newline
1872 edits.push((
1873 buffer.anchor_after(range_to_move.start)
1874 ..buffer.anchor_before(range_to_move.end),
1875 String::new(),
1876 ));
1877 let insertion_anchor = buffer.anchor_after(insertion_point);
1878 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1879
1880 let row_delta = insertion_point.row - range_to_move.end.row + 1;
1881
1882 // Move selections down
1883 new_selections.extend(contiguous_row_selections.drain(..).map(
1884 |mut selection| {
1885 selection.start.row += row_delta;
1886 selection.end.row += row_delta;
1887 selection
1888 },
1889 ));
1890
1891 // Move folds down
1892 unfold_ranges.push(range_to_move.clone());
1893 for fold in display_map.folds_in_range(
1894 buffer.anchor_before(range_to_move.start)
1895 ..buffer.anchor_after(range_to_move.end),
1896 ) {
1897 let mut start = fold.start.to_point(&buffer);
1898 let mut end = fold.end.to_point(&buffer);
1899 start.row += row_delta;
1900 end.row += row_delta;
1901 refold_ranges.push(start..end);
1902 }
1903 }
1904 }
1905
1906 // If we didn't move line(s), preserve the existing selections
1907 new_selections.extend(contiguous_row_selections.drain(..));
1908 }
1909
1910 self.start_transaction(cx);
1911 self.unfold_ranges(unfold_ranges, cx);
1912 self.buffer.update(cx, |buffer, cx| {
1913 for (range, text) in edits {
1914 buffer.edit([range], text, cx);
1915 }
1916 });
1917 self.fold_ranges(refold_ranges, cx);
1918 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1919 self.end_transaction(cx);
1920 }
1921
1922 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1923 self.start_transaction(cx);
1924 let mut text = String::new();
1925 let mut selections = self.local_selections::<Point>(cx);
1926 let mut clipboard_selections = Vec::with_capacity(selections.len());
1927 {
1928 let buffer = self.buffer.read(cx).read(cx);
1929 let max_point = buffer.max_point();
1930 for selection in &mut selections {
1931 let is_entire_line = selection.is_empty();
1932 if is_entire_line {
1933 selection.start = Point::new(selection.start.row, 0);
1934 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1935 }
1936 let mut len = 0;
1937 for chunk in buffer.text_for_range(selection.start..selection.end) {
1938 text.push_str(chunk);
1939 len += chunk.len();
1940 }
1941 clipboard_selections.push(ClipboardSelection {
1942 len,
1943 is_entire_line,
1944 });
1945 }
1946 }
1947 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1948 self.insert("", cx);
1949 self.end_transaction(cx);
1950
1951 cx.as_mut()
1952 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1953 }
1954
1955 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1956 let selections = self.local_selections::<Point>(cx);
1957 let mut text = String::new();
1958 let mut clipboard_selections = Vec::with_capacity(selections.len());
1959 {
1960 let buffer = self.buffer.read(cx).read(cx);
1961 let max_point = buffer.max_point();
1962 for selection in selections.iter() {
1963 let mut start = selection.start;
1964 let mut end = selection.end;
1965 let is_entire_line = selection.is_empty();
1966 if is_entire_line {
1967 start = Point::new(start.row, 0);
1968 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1969 }
1970 let mut len = 0;
1971 for chunk in buffer.text_for_range(start..end) {
1972 text.push_str(chunk);
1973 len += chunk.len();
1974 }
1975 clipboard_selections.push(ClipboardSelection {
1976 len,
1977 is_entire_line,
1978 });
1979 }
1980 }
1981
1982 cx.as_mut()
1983 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1984 }
1985
1986 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1987 if let Some(item) = cx.as_mut().read_from_clipboard() {
1988 let clipboard_text = item.text();
1989 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1990 let mut selections = self.local_selections::<usize>(cx);
1991 let all_selections_were_entire_line =
1992 clipboard_selections.iter().all(|s| s.is_entire_line);
1993 if clipboard_selections.len() != selections.len() {
1994 clipboard_selections.clear();
1995 }
1996
1997 let mut delta = 0_isize;
1998 let mut start_offset = 0;
1999 for (i, selection) in selections.iter_mut().enumerate() {
2000 let to_insert;
2001 let entire_line;
2002 if let Some(clipboard_selection) = clipboard_selections.get(i) {
2003 let end_offset = start_offset + clipboard_selection.len;
2004 to_insert = &clipboard_text[start_offset..end_offset];
2005 entire_line = clipboard_selection.is_entire_line;
2006 start_offset = end_offset
2007 } else {
2008 to_insert = clipboard_text.as_str();
2009 entire_line = all_selections_were_entire_line;
2010 }
2011
2012 selection.start = (selection.start as isize + delta) as usize;
2013 selection.end = (selection.end as isize + delta) as usize;
2014
2015 self.buffer.update(cx, |buffer, cx| {
2016 // If the corresponding selection was empty when this slice of the
2017 // clipboard text was written, then the entire line containing the
2018 // selection was copied. If this selection is also currently empty,
2019 // then paste the line before the current line of the buffer.
2020 let range = if selection.is_empty() && entire_line {
2021 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2022 let line_start = selection.start - column;
2023 line_start..line_start
2024 } else {
2025 selection.start..selection.end
2026 };
2027
2028 delta += to_insert.len() as isize - range.len() as isize;
2029 buffer.edit([range], to_insert, cx);
2030 selection.start += to_insert.len();
2031 selection.end = selection.start;
2032 });
2033 }
2034 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2035 } else {
2036 self.insert(clipboard_text, cx);
2037 }
2038 }
2039 }
2040
2041 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2042 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2043 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2044 self.set_selections(selections, cx);
2045 }
2046 self.request_autoscroll(Autoscroll::Fit, cx);
2047 }
2048 }
2049
2050 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2051 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2052 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2053 self.set_selections(selections, cx);
2054 }
2055 self.request_autoscroll(Autoscroll::Fit, cx);
2056 }
2057 }
2058
2059 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2060 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2061 let mut selections = self.local_selections::<Point>(cx);
2062 for selection in &mut selections {
2063 let start = selection.start.to_display_point(&display_map);
2064 let end = selection.end.to_display_point(&display_map);
2065
2066 if start != end {
2067 selection.end = selection.start.clone();
2068 } else {
2069 let cursor = movement::left(&display_map, start)
2070 .unwrap()
2071 .to_point(&display_map);
2072 selection.start = cursor.clone();
2073 selection.end = cursor;
2074 }
2075 selection.reversed = false;
2076 selection.goal = SelectionGoal::None;
2077 }
2078 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2079 }
2080
2081 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2083 let mut selections = self.local_selections::<Point>(cx);
2084 for selection in &mut selections {
2085 let head = selection.head().to_display_point(&display_map);
2086 let cursor = movement::left(&display_map, head)
2087 .unwrap()
2088 .to_point(&display_map);
2089 selection.set_head(cursor);
2090 selection.goal = SelectionGoal::None;
2091 }
2092 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2093 }
2094
2095 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2096 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2097 let mut selections = self.local_selections::<Point>(cx);
2098 for selection in &mut selections {
2099 let start = selection.start.to_display_point(&display_map);
2100 let end = selection.end.to_display_point(&display_map);
2101
2102 if start != end {
2103 selection.start = selection.end.clone();
2104 } else {
2105 let cursor = movement::right(&display_map, end)
2106 .unwrap()
2107 .to_point(&display_map);
2108 selection.start = cursor;
2109 selection.end = cursor;
2110 }
2111 selection.reversed = false;
2112 selection.goal = SelectionGoal::None;
2113 }
2114 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2115 }
2116
2117 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2118 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2119 let mut selections = self.local_selections::<Point>(cx);
2120 for selection in &mut selections {
2121 let head = selection.head().to_display_point(&display_map);
2122 let cursor = movement::right(&display_map, head)
2123 .unwrap()
2124 .to_point(&display_map);
2125 selection.set_head(cursor);
2126 selection.goal = SelectionGoal::None;
2127 }
2128 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2129 }
2130
2131 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2132 if matches!(self.mode, EditorMode::SingleLine) {
2133 cx.propagate_action();
2134 return;
2135 }
2136
2137 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2138 let mut selections = self.local_selections::<Point>(cx);
2139 for selection in &mut selections {
2140 let start = selection.start.to_display_point(&display_map);
2141 let end = selection.end.to_display_point(&display_map);
2142 if start != end {
2143 selection.goal = SelectionGoal::None;
2144 }
2145
2146 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2147 let cursor = start.to_point(&display_map);
2148 selection.start = cursor;
2149 selection.end = cursor;
2150 selection.goal = goal;
2151 selection.reversed = false;
2152 }
2153 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2154 }
2155
2156 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
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 head = selection.head().to_display_point(&display_map);
2161 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2162 let cursor = head.to_point(&display_map);
2163 selection.set_head(cursor);
2164 selection.goal = goal;
2165 }
2166 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2167 }
2168
2169 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2170 if matches!(self.mode, EditorMode::SingleLine) {
2171 cx.propagate_action();
2172 return;
2173 }
2174
2175 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2176 let mut selections = self.local_selections::<Point>(cx);
2177 for selection in &mut selections {
2178 let start = selection.start.to_display_point(&display_map);
2179 let end = selection.end.to_display_point(&display_map);
2180 if start != end {
2181 selection.goal = SelectionGoal::None;
2182 }
2183
2184 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2185 let cursor = start.to_point(&display_map);
2186 selection.start = cursor;
2187 selection.end = cursor;
2188 selection.goal = goal;
2189 selection.reversed = false;
2190 }
2191 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2192 }
2193
2194 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2195 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2196 let mut selections = self.local_selections::<Point>(cx);
2197 for selection in &mut selections {
2198 let head = selection.head().to_display_point(&display_map);
2199 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2200 let cursor = head.to_point(&display_map);
2201 selection.set_head(cursor);
2202 selection.goal = goal;
2203 }
2204 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2205 }
2206
2207 pub fn move_to_previous_word_boundary(
2208 &mut self,
2209 _: &MoveToPreviousWordBoundary,
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.start = cursor.clone();
2218 selection.end = cursor;
2219 selection.reversed = false;
2220 selection.goal = SelectionGoal::None;
2221 }
2222 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2223 }
2224
2225 pub fn select_to_previous_word_boundary(
2226 &mut self,
2227 _: &SelectToPreviousWordBoundary,
2228 cx: &mut ViewContext<Self>,
2229 ) {
2230 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2231 let mut selections = self.local_selections::<Point>(cx);
2232 for selection in &mut selections {
2233 let head = selection.head().to_display_point(&display_map);
2234 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2235 selection.set_head(cursor);
2236 selection.goal = SelectionGoal::None;
2237 }
2238 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2239 }
2240
2241 pub fn delete_to_previous_word_boundary(
2242 &mut self,
2243 _: &DeleteToPreviousWordBoundary,
2244 cx: &mut ViewContext<Self>,
2245 ) {
2246 self.start_transaction(cx);
2247 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2248 let mut selections = self.local_selections::<Point>(cx);
2249 for selection in &mut selections {
2250 if selection.is_empty() {
2251 let head = selection.head().to_display_point(&display_map);
2252 let cursor =
2253 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2254 selection.set_head(cursor);
2255 selection.goal = SelectionGoal::None;
2256 }
2257 }
2258 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2259 self.insert("", cx);
2260 self.end_transaction(cx);
2261 }
2262
2263 pub fn move_to_next_word_boundary(
2264 &mut self,
2265 _: &MoveToNextWordBoundary,
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.start = cursor;
2274 selection.end = cursor;
2275 selection.reversed = false;
2276 selection.goal = SelectionGoal::None;
2277 }
2278 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2279 }
2280
2281 pub fn select_to_next_word_boundary(
2282 &mut self,
2283 _: &SelectToNextWordBoundary,
2284 cx: &mut ViewContext<Self>,
2285 ) {
2286 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2287 let mut selections = self.local_selections::<Point>(cx);
2288 for selection in &mut selections {
2289 let head = selection.head().to_display_point(&display_map);
2290 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2291 selection.set_head(cursor);
2292 selection.goal = SelectionGoal::None;
2293 }
2294 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2295 }
2296
2297 pub fn delete_to_next_word_boundary(
2298 &mut self,
2299 _: &DeleteToNextWordBoundary,
2300 cx: &mut ViewContext<Self>,
2301 ) {
2302 self.start_transaction(cx);
2303 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2304 let mut selections = self.local_selections::<Point>(cx);
2305 for selection in &mut selections {
2306 if selection.is_empty() {
2307 let head = selection.head().to_display_point(&display_map);
2308 let cursor =
2309 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2310 selection.set_head(cursor);
2311 selection.goal = SelectionGoal::None;
2312 }
2313 }
2314 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2315 self.insert("", cx);
2316 self.end_transaction(cx);
2317 }
2318
2319 pub fn move_to_beginning_of_line(
2320 &mut self,
2321 _: &MoveToBeginningOfLine,
2322 cx: &mut ViewContext<Self>,
2323 ) {
2324 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2325 let mut selections = self.local_selections::<Point>(cx);
2326 for selection in &mut selections {
2327 let head = selection.head().to_display_point(&display_map);
2328 let new_head = movement::line_beginning(&display_map, head, true);
2329 let cursor = new_head.to_point(&display_map);
2330 selection.start = cursor;
2331 selection.end = cursor;
2332 selection.reversed = false;
2333 selection.goal = SelectionGoal::None;
2334 }
2335 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2336 }
2337
2338 pub fn select_to_beginning_of_line(
2339 &mut self,
2340 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2341 cx: &mut ViewContext<Self>,
2342 ) {
2343 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2344 let mut selections = self.local_selections::<Point>(cx);
2345 for selection in &mut selections {
2346 let head = selection.head().to_display_point(&display_map);
2347 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2348 selection.set_head(new_head.to_point(&display_map));
2349 selection.goal = SelectionGoal::None;
2350 }
2351 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2352 }
2353
2354 pub fn delete_to_beginning_of_line(
2355 &mut self,
2356 _: &DeleteToBeginningOfLine,
2357 cx: &mut ViewContext<Self>,
2358 ) {
2359 self.start_transaction(cx);
2360 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2361 self.backspace(&Backspace, cx);
2362 self.end_transaction(cx);
2363 }
2364
2365 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2366 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2367 let mut selections = self.local_selections::<Point>(cx);
2368 {
2369 for selection in &mut selections {
2370 let head = selection.head().to_display_point(&display_map);
2371 let new_head = movement::line_end(&display_map, head);
2372 let anchor = new_head.to_point(&display_map);
2373 selection.start = anchor.clone();
2374 selection.end = anchor;
2375 selection.reversed = false;
2376 selection.goal = SelectionGoal::None;
2377 }
2378 }
2379 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2380 }
2381
2382 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2383 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2384 let mut selections = self.local_selections::<Point>(cx);
2385 for selection in &mut selections {
2386 let head = selection.head().to_display_point(&display_map);
2387 let new_head = movement::line_end(&display_map, head);
2388 selection.set_head(new_head.to_point(&display_map));
2389 selection.goal = SelectionGoal::None;
2390 }
2391 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2392 }
2393
2394 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2395 self.start_transaction(cx);
2396 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2397 self.delete(&Delete, cx);
2398 self.end_transaction(cx);
2399 }
2400
2401 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2402 self.start_transaction(cx);
2403 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2404 self.cut(&Cut, cx);
2405 self.end_transaction(cx);
2406 }
2407
2408 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2409 let selection = Selection {
2410 id: post_inc(&mut self.next_selection_id),
2411 start: 0,
2412 end: 0,
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_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2420 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2421 selection.set_head(Point::zero());
2422 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2423 }
2424
2425 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2426 let cursor = self.buffer.read(cx).read(cx).len();
2427 let selection = Selection {
2428 id: post_inc(&mut self.next_selection_id),
2429 start: cursor,
2430 end: cursor,
2431 reversed: false,
2432 goal: SelectionGoal::None,
2433 };
2434 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2435 }
2436
2437 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2438 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2439 selection.set_head(self.buffer.read(cx).read(cx).len());
2440 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2441 }
2442
2443 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2444 let selection = Selection {
2445 id: post_inc(&mut self.next_selection_id),
2446 start: 0,
2447 end: self.buffer.read(cx).read(cx).len(),
2448 reversed: false,
2449 goal: SelectionGoal::None,
2450 };
2451 self.update_selections(vec![selection], None, cx);
2452 }
2453
2454 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2455 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2456 let mut selections = self.local_selections::<Point>(cx);
2457 let max_point = display_map.buffer_snapshot.max_point();
2458 for selection in &mut selections {
2459 let rows = selection.spanned_rows(true, &display_map);
2460 selection.start = Point::new(rows.start, 0);
2461 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2462 selection.reversed = false;
2463 }
2464 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2465 }
2466
2467 pub fn split_selection_into_lines(
2468 &mut self,
2469 _: &SplitSelectionIntoLines,
2470 cx: &mut ViewContext<Self>,
2471 ) {
2472 let mut to_unfold = Vec::new();
2473 let mut new_selections = Vec::new();
2474 {
2475 let selections = self.local_selections::<Point>(cx);
2476 let buffer = self.buffer.read(cx).read(cx);
2477 for selection in selections {
2478 for row in selection.start.row..selection.end.row {
2479 let cursor = Point::new(row, buffer.line_len(row));
2480 new_selections.push(Selection {
2481 id: post_inc(&mut self.next_selection_id),
2482 start: cursor,
2483 end: cursor,
2484 reversed: false,
2485 goal: SelectionGoal::None,
2486 });
2487 }
2488 new_selections.push(Selection {
2489 id: selection.id,
2490 start: selection.end,
2491 end: selection.end,
2492 reversed: false,
2493 goal: SelectionGoal::None,
2494 });
2495 to_unfold.push(selection.start..selection.end);
2496 }
2497 }
2498 self.unfold_ranges(to_unfold, cx);
2499 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2500 }
2501
2502 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2503 self.add_selection(true, cx);
2504 }
2505
2506 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2507 self.add_selection(false, cx);
2508 }
2509
2510 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2511 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2512 let mut selections = self.local_selections::<Point>(cx);
2513 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2514 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2515 let range = oldest_selection.display_range(&display_map).sorted();
2516 let columns = cmp::min(range.start.column(), range.end.column())
2517 ..cmp::max(range.start.column(), range.end.column());
2518
2519 selections.clear();
2520 let mut stack = Vec::new();
2521 for row in range.start.row()..=range.end.row() {
2522 if let Some(selection) = self.build_columnar_selection(
2523 &display_map,
2524 row,
2525 &columns,
2526 oldest_selection.reversed,
2527 ) {
2528 stack.push(selection.id);
2529 selections.push(selection);
2530 }
2531 }
2532
2533 if above {
2534 stack.reverse();
2535 }
2536
2537 AddSelectionsState { above, stack }
2538 });
2539
2540 let last_added_selection = *state.stack.last().unwrap();
2541 let mut new_selections = Vec::new();
2542 if above == state.above {
2543 let end_row = if above {
2544 0
2545 } else {
2546 display_map.max_point().row()
2547 };
2548
2549 'outer: for selection in selections {
2550 if selection.id == last_added_selection {
2551 let range = selection.display_range(&display_map).sorted();
2552 debug_assert_eq!(range.start.row(), range.end.row());
2553 let mut row = range.start.row();
2554 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2555 {
2556 start..end
2557 } else {
2558 cmp::min(range.start.column(), range.end.column())
2559 ..cmp::max(range.start.column(), range.end.column())
2560 };
2561
2562 while row != end_row {
2563 if above {
2564 row -= 1;
2565 } else {
2566 row += 1;
2567 }
2568
2569 if let Some(new_selection) = self.build_columnar_selection(
2570 &display_map,
2571 row,
2572 &columns,
2573 selection.reversed,
2574 ) {
2575 state.stack.push(new_selection.id);
2576 if above {
2577 new_selections.push(new_selection);
2578 new_selections.push(selection);
2579 } else {
2580 new_selections.push(selection);
2581 new_selections.push(new_selection);
2582 }
2583
2584 continue 'outer;
2585 }
2586 }
2587 }
2588
2589 new_selections.push(selection);
2590 }
2591 } else {
2592 new_selections = selections;
2593 new_selections.retain(|s| s.id != last_added_selection);
2594 state.stack.pop();
2595 }
2596
2597 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2598 if state.stack.len() > 1 {
2599 self.add_selections_state = Some(state);
2600 }
2601 }
2602
2603 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2604 let replace_newest = action.0;
2605 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2606 let buffer = &display_map.buffer_snapshot;
2607 let mut selections = self.local_selections::<usize>(cx);
2608 if let Some(mut select_next_state) = self.select_next_state.take() {
2609 let query = &select_next_state.query;
2610 if !select_next_state.done {
2611 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2612 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2613 let mut next_selected_range = None;
2614
2615 let bytes_after_last_selection =
2616 buffer.bytes_in_range(last_selection.end..buffer.len());
2617 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2618 let query_matches = query
2619 .stream_find_iter(bytes_after_last_selection)
2620 .map(|result| (last_selection.end, result))
2621 .chain(
2622 query
2623 .stream_find_iter(bytes_before_first_selection)
2624 .map(|result| (0, result)),
2625 );
2626 for (start_offset, query_match) in query_matches {
2627 let query_match = query_match.unwrap(); // can only fail due to I/O
2628 let offset_range =
2629 start_offset + query_match.start()..start_offset + query_match.end();
2630 let display_range = offset_range.start.to_display_point(&display_map)
2631 ..offset_range.end.to_display_point(&display_map);
2632
2633 if !select_next_state.wordwise
2634 || (!movement::is_inside_word(&display_map, display_range.start)
2635 && !movement::is_inside_word(&display_map, display_range.end))
2636 {
2637 next_selected_range = Some(offset_range);
2638 break;
2639 }
2640 }
2641
2642 if let Some(next_selected_range) = next_selected_range {
2643 if replace_newest {
2644 if let Some(newest_id) =
2645 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2646 {
2647 selections.retain(|s| s.id != newest_id);
2648 }
2649 }
2650 selections.push(Selection {
2651 id: post_inc(&mut self.next_selection_id),
2652 start: next_selected_range.start,
2653 end: next_selected_range.end,
2654 reversed: false,
2655 goal: SelectionGoal::None,
2656 });
2657 selections.sort_unstable_by_key(|s| s.start);
2658 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2659 } else {
2660 select_next_state.done = true;
2661 }
2662 }
2663
2664 self.select_next_state = Some(select_next_state);
2665 } else if selections.len() == 1 {
2666 let selection = selections.last_mut().unwrap();
2667 if selection.start == selection.end {
2668 let word_range = movement::surrounding_word(
2669 &display_map,
2670 selection.start.to_display_point(&display_map),
2671 );
2672 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2673 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2674 selection.goal = SelectionGoal::None;
2675 selection.reversed = false;
2676
2677 let query = buffer
2678 .text_for_range(selection.start..selection.end)
2679 .collect::<String>();
2680 let select_state = SelectNextState {
2681 query: AhoCorasick::new_auto_configured(&[query]),
2682 wordwise: true,
2683 done: false,
2684 };
2685 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2686 self.select_next_state = Some(select_state);
2687 } else {
2688 let query = buffer
2689 .text_for_range(selection.start..selection.end)
2690 .collect::<String>();
2691 self.select_next_state = Some(SelectNextState {
2692 query: AhoCorasick::new_auto_configured(&[query]),
2693 wordwise: false,
2694 done: false,
2695 });
2696 self.select_next(action, cx);
2697 }
2698 }
2699 }
2700
2701 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2702 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2703 // as that portion won't be used for detecting if a line is a comment.
2704 let full_comment_prefix =
2705 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2706 prefix.to_string()
2707 } else {
2708 return;
2709 };
2710 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2711 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2712
2713 self.start_transaction(cx);
2714 let mut selections = self.local_selections::<Point>(cx);
2715 let mut all_selection_lines_are_comments = true;
2716 let mut edit_ranges = Vec::new();
2717 let mut last_toggled_row = None;
2718 self.buffer.update(cx, |buffer, cx| {
2719 for selection in &mut selections {
2720 edit_ranges.clear();
2721 let snapshot = buffer.snapshot(cx);
2722
2723 let end_row =
2724 if selection.end.row > selection.start.row && selection.end.column == 0 {
2725 selection.end.row
2726 } else {
2727 selection.end.row + 1
2728 };
2729
2730 for row in selection.start.row..end_row {
2731 // If multiple selections contain a given row, avoid processing that
2732 // row more than once.
2733 if last_toggled_row == Some(row) {
2734 continue;
2735 } else {
2736 last_toggled_row = Some(row);
2737 }
2738
2739 if snapshot.is_line_blank(row) {
2740 continue;
2741 }
2742
2743 let start = Point::new(row, snapshot.indent_column_for_line(row));
2744 let mut line_bytes = snapshot
2745 .bytes_in_range(start..snapshot.max_point())
2746 .flatten()
2747 .copied();
2748
2749 // If this line currently begins with the line comment prefix, then record
2750 // the range containing the prefix.
2751 if all_selection_lines_are_comments
2752 && line_bytes
2753 .by_ref()
2754 .take(comment_prefix.len())
2755 .eq(comment_prefix.bytes())
2756 {
2757 // Include any whitespace that matches the comment prefix.
2758 let matching_whitespace_len = line_bytes
2759 .zip(comment_prefix_whitespace.bytes())
2760 .take_while(|(a, b)| a == b)
2761 .count() as u32;
2762 let end = Point::new(
2763 row,
2764 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2765 );
2766 edit_ranges.push(start..end);
2767 }
2768 // If this line does not begin with the line comment prefix, then record
2769 // the position where the prefix should be inserted.
2770 else {
2771 all_selection_lines_are_comments = false;
2772 edit_ranges.push(start..start);
2773 }
2774 }
2775
2776 if !edit_ranges.is_empty() {
2777 if all_selection_lines_are_comments {
2778 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2779 } else {
2780 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2781 let edit_ranges = edit_ranges.iter().map(|range| {
2782 let position = Point::new(range.start.row, min_column);
2783 position..position
2784 });
2785 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2786 }
2787 }
2788 }
2789 });
2790
2791 self.update_selections(
2792 self.local_selections::<usize>(cx),
2793 Some(Autoscroll::Fit),
2794 cx,
2795 );
2796 self.end_transaction(cx);
2797 }
2798
2799 pub fn select_larger_syntax_node(
2800 &mut self,
2801 _: &SelectLargerSyntaxNode,
2802 cx: &mut ViewContext<Self>,
2803 ) {
2804 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2805 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2806 let buffer = self.buffer.read(cx).snapshot(cx);
2807
2808 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2809 let mut selected_larger_node = false;
2810 let mut new_selections = old_selections
2811 .iter()
2812 .map(|selection| {
2813 let old_range = selection.start..selection.end;
2814 let mut new_range = old_range.clone();
2815 while let Some(containing_range) =
2816 buffer.range_for_syntax_ancestor(new_range.clone())
2817 {
2818 new_range = containing_range;
2819 if !display_map.intersects_fold(new_range.start)
2820 && !display_map.intersects_fold(new_range.end)
2821 {
2822 break;
2823 }
2824 }
2825
2826 selected_larger_node |= new_range != old_range;
2827 Selection {
2828 id: selection.id,
2829 start: new_range.start,
2830 end: new_range.end,
2831 goal: SelectionGoal::None,
2832 reversed: selection.reversed,
2833 }
2834 })
2835 .collect::<Vec<_>>();
2836
2837 if selected_larger_node {
2838 stack.push(old_selections);
2839 new_selections.sort_unstable_by_key(|selection| selection.start);
2840 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2841 }
2842 self.select_larger_syntax_node_stack = stack;
2843 }
2844
2845 pub fn select_smaller_syntax_node(
2846 &mut self,
2847 _: &SelectSmallerSyntaxNode,
2848 cx: &mut ViewContext<Self>,
2849 ) {
2850 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2851 if let Some(selections) = stack.pop() {
2852 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2853 }
2854 self.select_larger_syntax_node_stack = stack;
2855 }
2856
2857 pub fn move_to_enclosing_bracket(
2858 &mut self,
2859 _: &MoveToEnclosingBracket,
2860 cx: &mut ViewContext<Self>,
2861 ) {
2862 let mut selections = self.local_selections::<usize>(cx);
2863 let buffer = self.buffer.read(cx).snapshot(cx);
2864 for selection in &mut selections {
2865 if let Some((open_range, close_range)) =
2866 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2867 {
2868 let close_range = close_range.to_inclusive();
2869 let destination = if close_range.contains(&selection.start)
2870 && close_range.contains(&selection.end)
2871 {
2872 open_range.end
2873 } else {
2874 *close_range.start()
2875 };
2876 selection.start = destination;
2877 selection.end = destination;
2878 }
2879 }
2880
2881 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2882 }
2883
2884 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2885 let buffer = self.buffer.read(cx).snapshot(cx);
2886 let selection = self.newest_selection::<usize>(&buffer);
2887 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2888 active_diagnostics
2889 .primary_range
2890 .to_offset(&buffer)
2891 .to_inclusive()
2892 });
2893 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2894 if active_primary_range.contains(&selection.head()) {
2895 *active_primary_range.end()
2896 } else {
2897 selection.head()
2898 }
2899 } else {
2900 selection.head()
2901 };
2902
2903 loop {
2904 let next_group = buffer
2905 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2906 .find_map(|entry| {
2907 if entry.diagnostic.is_primary
2908 && !entry.range.is_empty()
2909 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2910 {
2911 Some((entry.range, entry.diagnostic.group_id))
2912 } else {
2913 None
2914 }
2915 });
2916
2917 if let Some((primary_range, group_id)) = next_group {
2918 self.activate_diagnostics(group_id, cx);
2919 self.update_selections(
2920 vec![Selection {
2921 id: selection.id,
2922 start: primary_range.start,
2923 end: primary_range.start,
2924 reversed: false,
2925 goal: SelectionGoal::None,
2926 }],
2927 Some(Autoscroll::Center),
2928 cx,
2929 );
2930 break;
2931 } else if search_start == 0 {
2932 break;
2933 } else {
2934 // Cycle around to the start of the buffer.
2935 search_start = 0;
2936 }
2937 }
2938 }
2939
2940 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2941 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2942 let buffer = self.buffer.read(cx).snapshot(cx);
2943 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2944 let is_valid = buffer
2945 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2946 .any(|entry| {
2947 entry.diagnostic.is_primary
2948 && !entry.range.is_empty()
2949 && entry.range.start == primary_range_start
2950 && entry.diagnostic.message == active_diagnostics.primary_message
2951 });
2952
2953 if is_valid != active_diagnostics.is_valid {
2954 active_diagnostics.is_valid = is_valid;
2955 let mut new_styles = HashMap::default();
2956 for (block_id, diagnostic) in &active_diagnostics.blocks {
2957 new_styles.insert(
2958 *block_id,
2959 diagnostic_block_renderer(
2960 diagnostic.clone(),
2961 is_valid,
2962 self.build_settings.clone(),
2963 ),
2964 );
2965 }
2966 self.display_map
2967 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2968 }
2969 }
2970 }
2971
2972 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2973 self.dismiss_diagnostics(cx);
2974 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2975 let buffer = self.buffer.read(cx).snapshot(cx);
2976
2977 let mut primary_range = None;
2978 let mut primary_message = None;
2979 let mut group_end = Point::zero();
2980 let diagnostic_group = buffer
2981 .diagnostic_group::<Point>(group_id)
2982 .map(|entry| {
2983 if entry.range.end > group_end {
2984 group_end = entry.range.end;
2985 }
2986 if entry.diagnostic.is_primary {
2987 primary_range = Some(entry.range.clone());
2988 primary_message = Some(entry.diagnostic.message.clone());
2989 }
2990 entry
2991 })
2992 .collect::<Vec<_>>();
2993 let primary_range = primary_range.unwrap();
2994 let primary_message = primary_message.unwrap();
2995 let primary_range =
2996 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2997
2998 let blocks = display_map
2999 .insert_blocks(
3000 diagnostic_group.iter().map(|entry| {
3001 let build_settings = self.build_settings.clone();
3002 let diagnostic = entry.diagnostic.clone();
3003 let message_height = diagnostic.message.lines().count() as u8;
3004
3005 BlockProperties {
3006 position: buffer.anchor_after(entry.range.start),
3007 height: message_height,
3008 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3009 disposition: BlockDisposition::Below,
3010 }
3011 }),
3012 cx,
3013 )
3014 .into_iter()
3015 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3016 .collect();
3017
3018 Some(ActiveDiagnosticGroup {
3019 primary_range,
3020 primary_message,
3021 blocks,
3022 is_valid: true,
3023 })
3024 });
3025 }
3026
3027 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3028 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3029 self.display_map.update(cx, |display_map, cx| {
3030 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3031 });
3032 cx.notify();
3033 }
3034 }
3035
3036 fn build_columnar_selection(
3037 &mut self,
3038 display_map: &DisplaySnapshot,
3039 row: u32,
3040 columns: &Range<u32>,
3041 reversed: bool,
3042 ) -> Option<Selection<Point>> {
3043 let is_empty = columns.start == columns.end;
3044 let line_len = display_map.line_len(row);
3045 if columns.start < line_len || (is_empty && columns.start == line_len) {
3046 let start = DisplayPoint::new(row, columns.start);
3047 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3048 Some(Selection {
3049 id: post_inc(&mut self.next_selection_id),
3050 start: start.to_point(display_map),
3051 end: end.to_point(display_map),
3052 reversed,
3053 goal: SelectionGoal::ColumnRange {
3054 start: columns.start,
3055 end: columns.end,
3056 },
3057 })
3058 } else {
3059 None
3060 }
3061 }
3062
3063 pub fn local_selections_in_range(
3064 &self,
3065 range: Range<Anchor>,
3066 display_map: &DisplaySnapshot,
3067 ) -> Vec<Selection<Point>> {
3068 let buffer = &display_map.buffer_snapshot;
3069
3070 let start_ix = match self
3071 .selections
3072 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3073 {
3074 Ok(ix) | Err(ix) => ix,
3075 };
3076 let end_ix = match self
3077 .selections
3078 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3079 {
3080 Ok(ix) => ix + 1,
3081 Err(ix) => ix,
3082 };
3083
3084 fn point_selection(
3085 selection: &Selection<Anchor>,
3086 buffer: &MultiBufferSnapshot,
3087 ) -> Selection<Point> {
3088 let start = selection.start.to_point(&buffer);
3089 let end = selection.end.to_point(&buffer);
3090 Selection {
3091 id: selection.id,
3092 start,
3093 end,
3094 reversed: selection.reversed,
3095 goal: selection.goal,
3096 }
3097 }
3098
3099 self.selections[start_ix..end_ix]
3100 .iter()
3101 .chain(
3102 self.pending_selection
3103 .as_ref()
3104 .map(|pending| &pending.selection),
3105 )
3106 .map(|s| point_selection(s, &buffer))
3107 .collect()
3108 }
3109
3110 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3111 where
3112 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3113 {
3114 let buffer = self.buffer.read(cx).snapshot(cx);
3115 let mut selections = self
3116 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3117 .peekable();
3118
3119 let mut pending_selection = self.pending_selection::<D>(&buffer);
3120
3121 iter::from_fn(move || {
3122 if let Some(pending) = pending_selection.as_mut() {
3123 while let Some(next_selection) = selections.peek() {
3124 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3125 let next_selection = selections.next().unwrap();
3126 if next_selection.start < pending.start {
3127 pending.start = next_selection.start;
3128 }
3129 if next_selection.end > pending.end {
3130 pending.end = next_selection.end;
3131 }
3132 } else if next_selection.end < pending.start {
3133 return selections.next();
3134 } else {
3135 break;
3136 }
3137 }
3138
3139 pending_selection.take()
3140 } else {
3141 selections.next()
3142 }
3143 })
3144 .collect()
3145 }
3146
3147 fn resolve_selections<'a, D, I>(
3148 &self,
3149 selections: I,
3150 snapshot: &MultiBufferSnapshot,
3151 ) -> impl 'a + Iterator<Item = Selection<D>>
3152 where
3153 D: TextDimension + Ord + Sub<D, Output = D>,
3154 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3155 {
3156 let (to_summarize, selections) = selections.into_iter().tee();
3157 let mut summaries = snapshot
3158 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3159 .into_iter();
3160 selections.map(move |s| Selection {
3161 id: s.id,
3162 start: summaries.next().unwrap(),
3163 end: summaries.next().unwrap(),
3164 reversed: s.reversed,
3165 goal: s.goal,
3166 })
3167 }
3168
3169 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3170 &self,
3171 snapshot: &MultiBufferSnapshot,
3172 ) -> Option<Selection<D>> {
3173 self.pending_selection
3174 .as_ref()
3175 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3176 }
3177
3178 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3179 &self,
3180 selection: &Selection<Anchor>,
3181 buffer: &MultiBufferSnapshot,
3182 ) -> Selection<D> {
3183 Selection {
3184 id: selection.id,
3185 start: selection.start.summary::<D>(&buffer),
3186 end: selection.end.summary::<D>(&buffer),
3187 reversed: selection.reversed,
3188 goal: selection.goal,
3189 }
3190 }
3191
3192 fn selection_count<'a>(&self) -> usize {
3193 let mut count = self.selections.len();
3194 if self.pending_selection.is_some() {
3195 count += 1;
3196 }
3197 count
3198 }
3199
3200 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3201 &self,
3202 snapshot: &MultiBufferSnapshot,
3203 ) -> Selection<D> {
3204 self.selections
3205 .iter()
3206 .min_by_key(|s| s.id)
3207 .map(|selection| self.resolve_selection(selection, snapshot))
3208 .or_else(|| self.pending_selection(snapshot))
3209 .unwrap()
3210 }
3211
3212 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3213 &self,
3214 snapshot: &MultiBufferSnapshot,
3215 ) -> Selection<D> {
3216 self.pending_selection(snapshot)
3217 .or_else(|| {
3218 self.selections
3219 .iter()
3220 .max_by_key(|s| s.id)
3221 .map(|selection| self.resolve_selection(selection, snapshot))
3222 })
3223 .unwrap()
3224 }
3225
3226 pub fn update_selections<T>(
3227 &mut self,
3228 mut selections: Vec<Selection<T>>,
3229 autoscroll: Option<Autoscroll>,
3230 cx: &mut ViewContext<Self>,
3231 ) where
3232 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3233 {
3234 // Merge overlapping selections.
3235 let buffer = self.buffer.read(cx).snapshot(cx);
3236 let mut i = 1;
3237 while i < selections.len() {
3238 if selections[i - 1].end >= selections[i].start {
3239 let removed = selections.remove(i);
3240 if removed.start < selections[i - 1].start {
3241 selections[i - 1].start = removed.start;
3242 }
3243 if removed.end > selections[i - 1].end {
3244 selections[i - 1].end = removed.end;
3245 }
3246 } else {
3247 i += 1;
3248 }
3249 }
3250
3251 self.pending_selection = None;
3252 self.add_selections_state = None;
3253 self.select_next_state = None;
3254 self.select_larger_syntax_node_stack.clear();
3255 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3256 let all_selections_inside_autoclose_ranges =
3257 if selections.len() == autoclose_pair.ranges.len() {
3258 selections
3259 .iter()
3260 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3261 .all(|(selection, autoclose_range)| {
3262 let head = selection.head().to_point(&buffer);
3263 autoclose_range.start <= head && autoclose_range.end >= head
3264 })
3265 } else {
3266 false
3267 };
3268
3269 if all_selections_inside_autoclose_ranges {
3270 break;
3271 } else {
3272 self.autoclose_stack.pop();
3273 }
3274 }
3275
3276 if let Some(autoscroll) = autoscroll {
3277 self.request_autoscroll(autoscroll, cx);
3278 }
3279 self.pause_cursor_blinking(cx);
3280
3281 self.set_selections(
3282 Arc::from_iter(selections.into_iter().map(|selection| {
3283 let end_bias = if selection.end > selection.start {
3284 Bias::Left
3285 } else {
3286 Bias::Right
3287 };
3288 Selection {
3289 id: selection.id,
3290 start: buffer.anchor_after(selection.start),
3291 end: buffer.anchor_at(selection.end, end_bias),
3292 reversed: selection.reversed,
3293 goal: selection.goal,
3294 }
3295 })),
3296 cx,
3297 );
3298 }
3299
3300 /// Compute new ranges for any selections that were located in excerpts that have
3301 /// since been removed.
3302 ///
3303 /// Returns a `HashMap` indicating which selections whose former head position
3304 /// was no longer present. The keys of the map are selection ids. The values are
3305 /// the id of the new excerpt where the head of the selection has been moved.
3306 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3307 let anchors_with_status = self.buffer.update(cx, |buffer, cx| {
3308 let snapshot = buffer.read(cx);
3309 snapshot.refresh_anchors(
3310 self.selections
3311 .iter()
3312 .flat_map(|selection| [&selection.start, &selection.end]),
3313 )
3314 });
3315 let mut selections_with_lost_position = HashMap::default();
3316 self.selections = self
3317 .selections
3318 .iter()
3319 .cloned()
3320 .zip(anchors_with_status.chunks(2))
3321 .map(|(mut selection, anchors)| {
3322 selection.start = anchors[0].0.clone();
3323 selection.end = anchors[1].0.clone();
3324 let kept_head_position = if selection.reversed {
3325 anchors[0].1
3326 } else {
3327 anchors[1].1
3328 };
3329 if !kept_head_position {
3330 selections_with_lost_position
3331 .insert(selection.id, selection.head().excerpt_id.clone());
3332 }
3333 selection
3334 })
3335 .collect();
3336 selections_with_lost_position
3337 }
3338
3339 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3340 self.selections = selections;
3341 self.buffer.update(cx, |buffer, cx| {
3342 buffer.set_active_selections(&self.selections, cx)
3343 });
3344 }
3345
3346 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3347 self.autoscroll_request = Some(autoscroll);
3348 cx.notify();
3349 }
3350
3351 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3352 self.start_transaction_at(Instant::now(), cx);
3353 }
3354
3355 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3356 self.end_selection(cx);
3357 if let Some(tx_id) = self
3358 .buffer
3359 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3360 {
3361 self.selection_history
3362 .insert(tx_id, (self.selections.clone(), None));
3363 }
3364 }
3365
3366 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3367 self.end_transaction_at(Instant::now(), cx);
3368 }
3369
3370 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3371 if let Some(tx_id) = self
3372 .buffer
3373 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3374 {
3375 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3376 }
3377 }
3378
3379 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3380 log::info!("Editor::page_up");
3381 }
3382
3383 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3384 log::info!("Editor::page_down");
3385 }
3386
3387 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3388 let mut fold_ranges = Vec::new();
3389
3390 let selections = self.local_selections::<Point>(cx);
3391 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3392 for selection in selections {
3393 let range = selection.display_range(&display_map).sorted();
3394 let buffer_start_row = range.start.to_point(&display_map).row;
3395
3396 for row in (0..=range.end.row()).rev() {
3397 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3398 let fold_range = self.foldable_range_for_line(&display_map, row);
3399 if fold_range.end.row >= buffer_start_row {
3400 fold_ranges.push(fold_range);
3401 if row <= range.start.row() {
3402 break;
3403 }
3404 }
3405 }
3406 }
3407 }
3408
3409 self.fold_ranges(fold_ranges, cx);
3410 }
3411
3412 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3413 let selections = self.local_selections::<Point>(cx);
3414 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3415 let buffer = &display_map.buffer_snapshot;
3416 let ranges = selections
3417 .iter()
3418 .map(|s| {
3419 let range = s.display_range(&display_map).sorted();
3420 let mut start = range.start.to_point(&display_map);
3421 let mut end = range.end.to_point(&display_map);
3422 start.column = 0;
3423 end.column = buffer.line_len(end.row);
3424 start..end
3425 })
3426 .collect::<Vec<_>>();
3427 self.unfold_ranges(ranges, cx);
3428 }
3429
3430 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3431 let max_point = display_map.max_point();
3432 if display_row >= max_point.row() {
3433 false
3434 } else {
3435 let (start_indent, is_blank) = display_map.line_indent(display_row);
3436 if is_blank {
3437 false
3438 } else {
3439 for display_row in display_row + 1..=max_point.row() {
3440 let (indent, is_blank) = display_map.line_indent(display_row);
3441 if !is_blank {
3442 return indent > start_indent;
3443 }
3444 }
3445 false
3446 }
3447 }
3448 }
3449
3450 fn foldable_range_for_line(
3451 &self,
3452 display_map: &DisplaySnapshot,
3453 start_row: u32,
3454 ) -> Range<Point> {
3455 let max_point = display_map.max_point();
3456
3457 let (start_indent, _) = display_map.line_indent(start_row);
3458 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3459 let mut end = None;
3460 for row in start_row + 1..=max_point.row() {
3461 let (indent, is_blank) = display_map.line_indent(row);
3462 if !is_blank && indent <= start_indent {
3463 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3464 break;
3465 }
3466 }
3467
3468 let end = end.unwrap_or(max_point);
3469 return start.to_point(display_map)..end.to_point(display_map);
3470 }
3471
3472 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3473 let selections = self.local_selections::<Point>(cx);
3474 let ranges = selections.into_iter().map(|s| s.start..s.end);
3475 self.fold_ranges(ranges, cx);
3476 }
3477
3478 fn fold_ranges<T: ToOffset>(
3479 &mut self,
3480 ranges: impl IntoIterator<Item = Range<T>>,
3481 cx: &mut ViewContext<Self>,
3482 ) {
3483 let mut ranges = ranges.into_iter().peekable();
3484 if ranges.peek().is_some() {
3485 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3486 self.request_autoscroll(Autoscroll::Fit, cx);
3487 cx.notify();
3488 }
3489 }
3490
3491 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3492 if !ranges.is_empty() {
3493 self.display_map
3494 .update(cx, |map, cx| map.unfold(ranges, cx));
3495 self.request_autoscroll(Autoscroll::Fit, cx);
3496 cx.notify();
3497 }
3498 }
3499
3500 pub fn insert_blocks(
3501 &mut self,
3502 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3503 cx: &mut ViewContext<Self>,
3504 ) -> Vec<BlockId> {
3505 let blocks = self
3506 .display_map
3507 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3508 self.request_autoscroll(Autoscroll::Fit, cx);
3509 blocks
3510 }
3511
3512 pub fn replace_blocks(
3513 &mut self,
3514 blocks: HashMap<BlockId, RenderBlock>,
3515 cx: &mut ViewContext<Self>,
3516 ) {
3517 self.display_map
3518 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3519 self.request_autoscroll(Autoscroll::Fit, cx);
3520 }
3521
3522 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3523 self.display_map.update(cx, |display_map, cx| {
3524 display_map.remove_blocks(block_ids, cx)
3525 });
3526 }
3527
3528 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3529 self.display_map
3530 .update(cx, |map, cx| map.snapshot(cx))
3531 .longest_row()
3532 }
3533
3534 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3535 self.display_map
3536 .update(cx, |map, cx| map.snapshot(cx))
3537 .max_point()
3538 }
3539
3540 pub fn text(&self, cx: &AppContext) -> String {
3541 self.buffer.read(cx).read(cx).text()
3542 }
3543
3544 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3545 self.display_map
3546 .update(cx, |map, cx| map.snapshot(cx))
3547 .text()
3548 }
3549
3550 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3551 self.display_map
3552 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3553 }
3554
3555 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3556 self.highlighted_row = row;
3557 }
3558
3559 pub fn highlighted_row(&mut self) -> Option<u32> {
3560 self.highlighted_row
3561 }
3562
3563 fn next_blink_epoch(&mut self) -> usize {
3564 self.blink_epoch += 1;
3565 self.blink_epoch
3566 }
3567
3568 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3569 self.show_local_cursors = true;
3570 cx.notify();
3571
3572 let epoch = self.next_blink_epoch();
3573 cx.spawn(|this, mut cx| {
3574 let this = this.downgrade();
3575 async move {
3576 Timer::after(CURSOR_BLINK_INTERVAL).await;
3577 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3578 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3579 }
3580 }
3581 })
3582 .detach();
3583 }
3584
3585 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3586 if epoch == self.blink_epoch {
3587 self.blinking_paused = false;
3588 self.blink_cursors(epoch, cx);
3589 }
3590 }
3591
3592 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3593 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3594 self.show_local_cursors = !self.show_local_cursors;
3595 cx.notify();
3596
3597 let epoch = self.next_blink_epoch();
3598 cx.spawn(|this, mut cx| {
3599 let this = this.downgrade();
3600 async move {
3601 Timer::after(CURSOR_BLINK_INTERVAL).await;
3602 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3603 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3604 }
3605 }
3606 })
3607 .detach();
3608 }
3609 }
3610
3611 pub fn show_local_cursors(&self) -> bool {
3612 self.show_local_cursors
3613 }
3614
3615 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3616 self.refresh_active_diagnostics(cx);
3617 cx.notify();
3618 }
3619
3620 fn on_buffer_event(
3621 &mut self,
3622 _: ModelHandle<MultiBuffer>,
3623 event: &language::Event,
3624 cx: &mut ViewContext<Self>,
3625 ) {
3626 match event {
3627 language::Event::Edited => cx.emit(Event::Edited),
3628 language::Event::Dirtied => cx.emit(Event::Dirtied),
3629 language::Event::Saved => cx.emit(Event::Saved),
3630 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3631 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3632 language::Event::Closed => cx.emit(Event::Closed),
3633 _ => {}
3634 }
3635 }
3636
3637 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3638 cx.notify();
3639 }
3640}
3641
3642impl EditorSnapshot {
3643 pub fn is_focused(&self) -> bool {
3644 self.is_focused
3645 }
3646
3647 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3648 self.placeholder_text.as_ref()
3649 }
3650
3651 pub fn scroll_position(&self) -> Vector2F {
3652 compute_scroll_position(
3653 &self.display_snapshot,
3654 self.scroll_position,
3655 &self.scroll_top_anchor,
3656 )
3657 }
3658}
3659
3660impl Deref for EditorSnapshot {
3661 type Target = DisplaySnapshot;
3662
3663 fn deref(&self) -> &Self::Target {
3664 &self.display_snapshot
3665 }
3666}
3667
3668impl EditorSettings {
3669 #[cfg(any(test, feature = "test-support"))]
3670 pub fn test(cx: &AppContext) -> Self {
3671 Self {
3672 tab_size: 4,
3673 soft_wrap: SoftWrap::None,
3674 style: {
3675 let font_cache: &gpui::FontCache = cx.font_cache();
3676 let font_family_name = Arc::from("Monaco");
3677 let font_properties = Default::default();
3678 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3679 let font_id = font_cache
3680 .select_font(font_family_id, &font_properties)
3681 .unwrap();
3682 EditorStyle {
3683 text: gpui::fonts::TextStyle {
3684 font_family_name,
3685 font_family_id,
3686 font_id,
3687 font_size: 14.,
3688 color: gpui::color::Color::from_u32(0xff0000ff),
3689 font_properties,
3690 underline: None,
3691 },
3692 placeholder_text: None,
3693 background: Default::default(),
3694 gutter_background: Default::default(),
3695 active_line_background: Default::default(),
3696 highlighted_line_background: Default::default(),
3697 line_number: Default::default(),
3698 line_number_active: Default::default(),
3699 selection: Default::default(),
3700 guest_selections: Default::default(),
3701 syntax: Default::default(),
3702 error_diagnostic: Default::default(),
3703 invalid_error_diagnostic: Default::default(),
3704 warning_diagnostic: Default::default(),
3705 invalid_warning_diagnostic: Default::default(),
3706 information_diagnostic: Default::default(),
3707 invalid_information_diagnostic: Default::default(),
3708 hint_diagnostic: Default::default(),
3709 invalid_hint_diagnostic: Default::default(),
3710 }
3711 },
3712 }
3713 }
3714}
3715
3716fn compute_scroll_position(
3717 snapshot: &DisplaySnapshot,
3718 mut scroll_position: Vector2F,
3719 scroll_top_anchor: &Option<Anchor>,
3720) -> Vector2F {
3721 if let Some(anchor) = scroll_top_anchor {
3722 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
3723 scroll_position.set_y(scroll_top + scroll_position.y());
3724 } else {
3725 scroll_position.set_y(0.);
3726 }
3727 scroll_position
3728}
3729
3730#[derive(Copy, Clone)]
3731pub enum Event {
3732 Activate,
3733 Edited,
3734 Blurred,
3735 Dirtied,
3736 Saved,
3737 FileHandleChanged,
3738 Closed,
3739}
3740
3741impl Entity for Editor {
3742 type Event = Event;
3743}
3744
3745impl View for Editor {
3746 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3747 let settings = (self.build_settings)(cx);
3748 self.display_map.update(cx, |map, cx| {
3749 map.set_font(
3750 settings.style.text.font_id,
3751 settings.style.text.font_size,
3752 cx,
3753 )
3754 });
3755 EditorElement::new(self.handle.clone(), settings).boxed()
3756 }
3757
3758 fn ui_name() -> &'static str {
3759 "Editor"
3760 }
3761
3762 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3763 self.focused = true;
3764 self.blink_cursors(self.blink_epoch, cx);
3765 self.buffer.update(cx, |buffer, cx| {
3766 buffer.set_active_selections(&self.selections, cx)
3767 });
3768 }
3769
3770 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3771 self.focused = false;
3772 self.show_local_cursors = false;
3773 self.buffer
3774 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3775 cx.emit(Event::Blurred);
3776 cx.notify();
3777 }
3778
3779 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3780 let mut cx = Self::default_keymap_context();
3781 let mode = match self.mode {
3782 EditorMode::SingleLine => "single_line",
3783 EditorMode::AutoHeight { .. } => "auto_height",
3784 EditorMode::Full => "full",
3785 };
3786 cx.map.insert("mode".into(), mode.into());
3787 cx
3788 }
3789}
3790
3791impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3792 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3793 let start = self.start.to_point(buffer);
3794 let end = self.end.to_point(buffer);
3795 if self.reversed {
3796 end..start
3797 } else {
3798 start..end
3799 }
3800 }
3801
3802 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3803 let start = self.start.to_offset(buffer);
3804 let end = self.end.to_offset(buffer);
3805 if self.reversed {
3806 end..start
3807 } else {
3808 start..end
3809 }
3810 }
3811
3812 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3813 let start = self
3814 .start
3815 .to_point(&map.buffer_snapshot)
3816 .to_display_point(map);
3817 let end = self
3818 .end
3819 .to_point(&map.buffer_snapshot)
3820 .to_display_point(map);
3821 if self.reversed {
3822 end..start
3823 } else {
3824 start..end
3825 }
3826 }
3827
3828 fn spanned_rows(
3829 &self,
3830 include_end_if_at_line_start: bool,
3831 map: &DisplaySnapshot,
3832 ) -> Range<u32> {
3833 let start = self.start.to_point(&map.buffer_snapshot);
3834 let mut end = self.end.to_point(&map.buffer_snapshot);
3835 if !include_end_if_at_line_start
3836 && end.row != map.buffer_snapshot.max_point().row
3837 && start.row != end.row
3838 && end.column == 0
3839 {
3840 end.row -= 1;
3841 }
3842
3843 let buffer_start = map.prev_line_boundary(start).0;
3844 let buffer_end = map.next_line_boundary(end).0;
3845 buffer_start.row..buffer_end.row + 1
3846 }
3847}
3848
3849pub fn diagnostic_block_renderer(
3850 diagnostic: Diagnostic,
3851 is_valid: bool,
3852 build_settings: BuildSettings,
3853) -> RenderBlock {
3854 Arc::new(move |cx: &BlockContext| {
3855 let settings = build_settings(cx);
3856 let mut text_style = settings.style.text.clone();
3857 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3858 Text::new(diagnostic.message.clone(), text_style)
3859 .with_soft_wrap(false)
3860 .contained()
3861 .with_margin_left(cx.anchor_x)
3862 .boxed()
3863 })
3864}
3865
3866pub fn diagnostic_header_renderer(
3867 buffer: ModelHandle<Buffer>,
3868 diagnostic: Diagnostic,
3869 is_valid: bool,
3870 build_settings: BuildSettings,
3871) -> RenderBlock {
3872 Arc::new(move |cx| {
3873 let settings = build_settings(cx);
3874 let mut text_style = settings.style.text.clone();
3875 let diagnostic_style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
3876 text_style.color = diagnostic_style.text;
3877 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3878 file.path().to_string_lossy().to_string()
3879 } else {
3880 "untitled".to_string()
3881 };
3882
3883 Flex::column()
3884 .with_child(
3885 Text::new(diagnostic.message.clone(), text_style)
3886 .with_soft_wrap(false)
3887 .boxed(),
3888 )
3889 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3890 .aligned()
3891 .left()
3892 .contained()
3893 .with_style(diagnostic_style.header)
3894 .expanded()
3895 .boxed()
3896 })
3897}
3898
3899pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3900 Arc::new(move |cx| {
3901 let settings = build_settings(cx);
3902 let text_style = settings.style.text.clone();
3903 Label::new("...".to_string(), text_style).boxed()
3904 })
3905}
3906
3907pub fn diagnostic_style(
3908 severity: DiagnosticSeverity,
3909 valid: bool,
3910 style: &EditorStyle,
3911) -> DiagnosticStyle {
3912 match (severity, valid) {
3913 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3914 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3915 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3916 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3917 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3918 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3919 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3920 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3921 _ => Default::default(),
3922 }
3923}
3924
3925pub fn settings_builder(
3926 buffer: WeakModelHandle<MultiBuffer>,
3927 settings: watch::Receiver<workspace::Settings>,
3928) -> BuildSettings {
3929 Arc::new(move |cx| {
3930 let settings = settings.borrow();
3931 let font_cache = cx.font_cache();
3932 let font_family_id = settings.buffer_font_family;
3933 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3934 let font_properties = Default::default();
3935 let font_id = font_cache
3936 .select_font(font_family_id, &font_properties)
3937 .unwrap();
3938 let font_size = settings.buffer_font_size;
3939
3940 let mut theme = settings.theme.editor.clone();
3941 theme.text = TextStyle {
3942 color: theme.text.color,
3943 font_family_name,
3944 font_family_id,
3945 font_id,
3946 font_size,
3947 font_properties,
3948 underline: None,
3949 };
3950 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3951 let soft_wrap = match settings.soft_wrap(language) {
3952 workspace::settings::SoftWrap::None => SoftWrap::None,
3953 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3954 workspace::settings::SoftWrap::PreferredLineLength => {
3955 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3956 }
3957 };
3958
3959 EditorSettings {
3960 tab_size: settings.tab_size,
3961 soft_wrap,
3962 style: theme,
3963 }
3964 })
3965}
3966
3967#[cfg(test)]
3968mod tests {
3969 use super::*;
3970 use language::LanguageConfig;
3971 use std::time::Instant;
3972 use text::Point;
3973 use unindent::Unindent;
3974 use util::test::sample_text;
3975
3976 #[gpui::test]
3977 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3978 let mut now = Instant::now();
3979 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3980 let group_interval = buffer.read(cx).transaction_group_interval();
3981 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3982 let settings = EditorSettings::test(cx);
3983 let (_, editor) = cx.add_window(Default::default(), |cx| {
3984 build_editor(buffer.clone(), settings, cx)
3985 });
3986
3987 editor.update(cx, |editor, cx| {
3988 editor.start_transaction_at(now, cx);
3989 editor.select_ranges([2..4], None, cx);
3990 editor.insert("cd", cx);
3991 editor.end_transaction_at(now, cx);
3992 assert_eq!(editor.text(cx), "12cd56");
3993 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3994
3995 editor.start_transaction_at(now, cx);
3996 editor.select_ranges([4..5], None, cx);
3997 editor.insert("e", cx);
3998 editor.end_transaction_at(now, cx);
3999 assert_eq!(editor.text(cx), "12cde6");
4000 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4001
4002 now += group_interval + Duration::from_millis(1);
4003 editor.select_ranges([2..2], None, cx);
4004
4005 // Simulate an edit in another editor
4006 buffer.update(cx, |buffer, cx| {
4007 buffer.start_transaction_at(now, cx);
4008 buffer.edit([0..1], "a", cx);
4009 buffer.edit([1..1], "b", cx);
4010 buffer.end_transaction_at(now, cx);
4011 });
4012
4013 assert_eq!(editor.text(cx), "ab2cde6");
4014 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4015
4016 // Last transaction happened past the group interval in a different editor.
4017 // Undo it individually and don't restore selections.
4018 editor.undo(&Undo, cx);
4019 assert_eq!(editor.text(cx), "12cde6");
4020 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4021
4022 // First two transactions happened within the group interval in this editor.
4023 // Undo them together and restore selections.
4024 editor.undo(&Undo, cx);
4025 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4026 assert_eq!(editor.text(cx), "123456");
4027 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4028
4029 // Redo the first two transactions together.
4030 editor.redo(&Redo, cx);
4031 assert_eq!(editor.text(cx), "12cde6");
4032 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4033
4034 // Redo the last transaction on its own.
4035 editor.redo(&Redo, cx);
4036 assert_eq!(editor.text(cx), "ab2cde6");
4037 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4038
4039 // Test empty transactions.
4040 editor.start_transaction_at(now, cx);
4041 editor.end_transaction_at(now, cx);
4042 editor.undo(&Undo, cx);
4043 assert_eq!(editor.text(cx), "12cde6");
4044 });
4045 }
4046
4047 #[gpui::test]
4048 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4049 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4050 let settings = EditorSettings::test(cx);
4051 let (_, editor) =
4052 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4053
4054 editor.update(cx, |view, cx| {
4055 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4056 });
4057
4058 assert_eq!(
4059 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4060 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4061 );
4062
4063 editor.update(cx, |view, cx| {
4064 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4065 });
4066
4067 assert_eq!(
4068 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4069 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4070 );
4071
4072 editor.update(cx, |view, cx| {
4073 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4074 });
4075
4076 assert_eq!(
4077 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4078 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4079 );
4080
4081 editor.update(cx, |view, cx| {
4082 view.end_selection(cx);
4083 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4084 });
4085
4086 assert_eq!(
4087 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4088 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4089 );
4090
4091 editor.update(cx, |view, cx| {
4092 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4093 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4094 });
4095
4096 assert_eq!(
4097 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4098 [
4099 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4100 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4101 ]
4102 );
4103
4104 editor.update(cx, |view, cx| {
4105 view.end_selection(cx);
4106 });
4107
4108 assert_eq!(
4109 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4110 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4111 );
4112 }
4113
4114 #[gpui::test]
4115 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4116 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4117 let settings = EditorSettings::test(cx);
4118 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4119
4120 view.update(cx, |view, cx| {
4121 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4122 assert_eq!(
4123 view.selected_display_ranges(cx),
4124 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4125 );
4126 });
4127
4128 view.update(cx, |view, cx| {
4129 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4130 assert_eq!(
4131 view.selected_display_ranges(cx),
4132 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4133 );
4134 });
4135
4136 view.update(cx, |view, cx| {
4137 view.cancel(&Cancel, cx);
4138 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4139 assert_eq!(
4140 view.selected_display_ranges(cx),
4141 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4142 );
4143 });
4144 }
4145
4146 #[gpui::test]
4147 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4148 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4149 let settings = EditorSettings::test(cx);
4150 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4151
4152 view.update(cx, |view, cx| {
4153 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4154 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4155 view.end_selection(cx);
4156
4157 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4158 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4159 view.end_selection(cx);
4160 assert_eq!(
4161 view.selected_display_ranges(cx),
4162 [
4163 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4164 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4165 ]
4166 );
4167 });
4168
4169 view.update(cx, |view, cx| {
4170 view.cancel(&Cancel, cx);
4171 assert_eq!(
4172 view.selected_display_ranges(cx),
4173 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4174 );
4175 });
4176
4177 view.update(cx, |view, cx| {
4178 view.cancel(&Cancel, cx);
4179 assert_eq!(
4180 view.selected_display_ranges(cx),
4181 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4182 );
4183 });
4184 }
4185
4186 #[gpui::test]
4187 fn test_fold(cx: &mut gpui::MutableAppContext) {
4188 let buffer = MultiBuffer::build_simple(
4189 &"
4190 impl Foo {
4191 // Hello!
4192
4193 fn a() {
4194 1
4195 }
4196
4197 fn b() {
4198 2
4199 }
4200
4201 fn c() {
4202 3
4203 }
4204 }
4205 "
4206 .unindent(),
4207 cx,
4208 );
4209 let settings = EditorSettings::test(&cx);
4210 let (_, view) = cx.add_window(Default::default(), |cx| {
4211 build_editor(buffer.clone(), settings, cx)
4212 });
4213
4214 view.update(cx, |view, cx| {
4215 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4216 .unwrap();
4217 view.fold(&Fold, cx);
4218 assert_eq!(
4219 view.display_text(cx),
4220 "
4221 impl Foo {
4222 // Hello!
4223
4224 fn a() {
4225 1
4226 }
4227
4228 fn b() {…
4229 }
4230
4231 fn c() {…
4232 }
4233 }
4234 "
4235 .unindent(),
4236 );
4237
4238 view.fold(&Fold, cx);
4239 assert_eq!(
4240 view.display_text(cx),
4241 "
4242 impl Foo {…
4243 }
4244 "
4245 .unindent(),
4246 );
4247
4248 view.unfold(&Unfold, cx);
4249 assert_eq!(
4250 view.display_text(cx),
4251 "
4252 impl Foo {
4253 // Hello!
4254
4255 fn a() {
4256 1
4257 }
4258
4259 fn b() {…
4260 }
4261
4262 fn c() {…
4263 }
4264 }
4265 "
4266 .unindent(),
4267 );
4268
4269 view.unfold(&Unfold, cx);
4270 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4271 });
4272 }
4273
4274 #[gpui::test]
4275 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4276 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4277 let settings = EditorSettings::test(&cx);
4278 let (_, view) = cx.add_window(Default::default(), |cx| {
4279 build_editor(buffer.clone(), settings, cx)
4280 });
4281
4282 buffer.update(cx, |buffer, cx| {
4283 buffer.edit(
4284 vec![
4285 Point::new(1, 0)..Point::new(1, 0),
4286 Point::new(1, 1)..Point::new(1, 1),
4287 ],
4288 "\t",
4289 cx,
4290 );
4291 });
4292
4293 view.update(cx, |view, cx| {
4294 assert_eq!(
4295 view.selected_display_ranges(cx),
4296 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4297 );
4298
4299 view.move_down(&MoveDown, cx);
4300 assert_eq!(
4301 view.selected_display_ranges(cx),
4302 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4303 );
4304
4305 view.move_right(&MoveRight, cx);
4306 assert_eq!(
4307 view.selected_display_ranges(cx),
4308 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4309 );
4310
4311 view.move_left(&MoveLeft, cx);
4312 assert_eq!(
4313 view.selected_display_ranges(cx),
4314 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4315 );
4316
4317 view.move_up(&MoveUp, cx);
4318 assert_eq!(
4319 view.selected_display_ranges(cx),
4320 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4321 );
4322
4323 view.move_to_end(&MoveToEnd, cx);
4324 assert_eq!(
4325 view.selected_display_ranges(cx),
4326 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4327 );
4328
4329 view.move_to_beginning(&MoveToBeginning, cx);
4330 assert_eq!(
4331 view.selected_display_ranges(cx),
4332 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4333 );
4334
4335 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4336 .unwrap();
4337 view.select_to_beginning(&SelectToBeginning, cx);
4338 assert_eq!(
4339 view.selected_display_ranges(cx),
4340 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4341 );
4342
4343 view.select_to_end(&SelectToEnd, cx);
4344 assert_eq!(
4345 view.selected_display_ranges(cx),
4346 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4347 );
4348 });
4349 }
4350
4351 #[gpui::test]
4352 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4353 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4354 let settings = EditorSettings::test(&cx);
4355 let (_, view) = cx.add_window(Default::default(), |cx| {
4356 build_editor(buffer.clone(), settings, cx)
4357 });
4358
4359 assert_eq!('ⓐ'.len_utf8(), 3);
4360 assert_eq!('α'.len_utf8(), 2);
4361
4362 view.update(cx, |view, cx| {
4363 view.fold_ranges(
4364 vec![
4365 Point::new(0, 6)..Point::new(0, 12),
4366 Point::new(1, 2)..Point::new(1, 4),
4367 Point::new(2, 4)..Point::new(2, 8),
4368 ],
4369 cx,
4370 );
4371 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4372
4373 view.move_right(&MoveRight, cx);
4374 assert_eq!(
4375 view.selected_display_ranges(cx),
4376 &[empty_range(0, "ⓐ".len())]
4377 );
4378 view.move_right(&MoveRight, cx);
4379 assert_eq!(
4380 view.selected_display_ranges(cx),
4381 &[empty_range(0, "ⓐⓑ".len())]
4382 );
4383 view.move_right(&MoveRight, cx);
4384 assert_eq!(
4385 view.selected_display_ranges(cx),
4386 &[empty_range(0, "ⓐⓑ…".len())]
4387 );
4388
4389 view.move_down(&MoveDown, cx);
4390 assert_eq!(
4391 view.selected_display_ranges(cx),
4392 &[empty_range(1, "ab…".len())]
4393 );
4394 view.move_left(&MoveLeft, cx);
4395 assert_eq!(
4396 view.selected_display_ranges(cx),
4397 &[empty_range(1, "ab".len())]
4398 );
4399 view.move_left(&MoveLeft, cx);
4400 assert_eq!(
4401 view.selected_display_ranges(cx),
4402 &[empty_range(1, "a".len())]
4403 );
4404
4405 view.move_down(&MoveDown, cx);
4406 assert_eq!(
4407 view.selected_display_ranges(cx),
4408 &[empty_range(2, "α".len())]
4409 );
4410 view.move_right(&MoveRight, cx);
4411 assert_eq!(
4412 view.selected_display_ranges(cx),
4413 &[empty_range(2, "αβ".len())]
4414 );
4415 view.move_right(&MoveRight, cx);
4416 assert_eq!(
4417 view.selected_display_ranges(cx),
4418 &[empty_range(2, "αβ…".len())]
4419 );
4420 view.move_right(&MoveRight, cx);
4421 assert_eq!(
4422 view.selected_display_ranges(cx),
4423 &[empty_range(2, "αβ…ε".len())]
4424 );
4425
4426 view.move_up(&MoveUp, cx);
4427 assert_eq!(
4428 view.selected_display_ranges(cx),
4429 &[empty_range(1, "ab…e".len())]
4430 );
4431 view.move_up(&MoveUp, cx);
4432 assert_eq!(
4433 view.selected_display_ranges(cx),
4434 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4435 );
4436 view.move_left(&MoveLeft, cx);
4437 assert_eq!(
4438 view.selected_display_ranges(cx),
4439 &[empty_range(0, "ⓐⓑ…".len())]
4440 );
4441 view.move_left(&MoveLeft, cx);
4442 assert_eq!(
4443 view.selected_display_ranges(cx),
4444 &[empty_range(0, "ⓐⓑ".len())]
4445 );
4446 view.move_left(&MoveLeft, cx);
4447 assert_eq!(
4448 view.selected_display_ranges(cx),
4449 &[empty_range(0, "ⓐ".len())]
4450 );
4451 });
4452 }
4453
4454 #[gpui::test]
4455 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4456 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4457 let settings = EditorSettings::test(&cx);
4458 let (_, view) = cx.add_window(Default::default(), |cx| {
4459 build_editor(buffer.clone(), settings, cx)
4460 });
4461 view.update(cx, |view, cx| {
4462 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4463 .unwrap();
4464
4465 view.move_down(&MoveDown, cx);
4466 assert_eq!(
4467 view.selected_display_ranges(cx),
4468 &[empty_range(1, "abcd".len())]
4469 );
4470
4471 view.move_down(&MoveDown, cx);
4472 assert_eq!(
4473 view.selected_display_ranges(cx),
4474 &[empty_range(2, "αβγ".len())]
4475 );
4476
4477 view.move_down(&MoveDown, cx);
4478 assert_eq!(
4479 view.selected_display_ranges(cx),
4480 &[empty_range(3, "abcd".len())]
4481 );
4482
4483 view.move_down(&MoveDown, cx);
4484 assert_eq!(
4485 view.selected_display_ranges(cx),
4486 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4487 );
4488
4489 view.move_up(&MoveUp, cx);
4490 assert_eq!(
4491 view.selected_display_ranges(cx),
4492 &[empty_range(3, "abcd".len())]
4493 );
4494
4495 view.move_up(&MoveUp, cx);
4496 assert_eq!(
4497 view.selected_display_ranges(cx),
4498 &[empty_range(2, "αβγ".len())]
4499 );
4500 });
4501 }
4502
4503 #[gpui::test]
4504 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4505 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4506 let settings = EditorSettings::test(&cx);
4507 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4508 view.update(cx, |view, cx| {
4509 view.select_display_ranges(
4510 &[
4511 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4512 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4513 ],
4514 cx,
4515 )
4516 .unwrap();
4517 });
4518
4519 view.update(cx, |view, cx| {
4520 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4521 assert_eq!(
4522 view.selected_display_ranges(cx),
4523 &[
4524 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4525 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4526 ]
4527 );
4528 });
4529
4530 view.update(cx, |view, cx| {
4531 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4532 assert_eq!(
4533 view.selected_display_ranges(cx),
4534 &[
4535 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4536 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4537 ]
4538 );
4539 });
4540
4541 view.update(cx, |view, cx| {
4542 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4543 assert_eq!(
4544 view.selected_display_ranges(cx),
4545 &[
4546 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4547 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4548 ]
4549 );
4550 });
4551
4552 view.update(cx, |view, cx| {
4553 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4554 assert_eq!(
4555 view.selected_display_ranges(cx),
4556 &[
4557 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4558 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4559 ]
4560 );
4561 });
4562
4563 // Moving to the end of line again is a no-op.
4564 view.update(cx, |view, cx| {
4565 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4566 assert_eq!(
4567 view.selected_display_ranges(cx),
4568 &[
4569 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4570 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4571 ]
4572 );
4573 });
4574
4575 view.update(cx, |view, cx| {
4576 view.move_left(&MoveLeft, cx);
4577 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4578 assert_eq!(
4579 view.selected_display_ranges(cx),
4580 &[
4581 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4582 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4583 ]
4584 );
4585 });
4586
4587 view.update(cx, |view, cx| {
4588 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4589 assert_eq!(
4590 view.selected_display_ranges(cx),
4591 &[
4592 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4593 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4594 ]
4595 );
4596 });
4597
4598 view.update(cx, |view, cx| {
4599 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4600 assert_eq!(
4601 view.selected_display_ranges(cx),
4602 &[
4603 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4604 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4605 ]
4606 );
4607 });
4608
4609 view.update(cx, |view, cx| {
4610 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4611 assert_eq!(
4612 view.selected_display_ranges(cx),
4613 &[
4614 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4615 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4616 ]
4617 );
4618 });
4619
4620 view.update(cx, |view, cx| {
4621 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4622 assert_eq!(view.display_text(cx), "ab\n de");
4623 assert_eq!(
4624 view.selected_display_ranges(cx),
4625 &[
4626 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4627 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4628 ]
4629 );
4630 });
4631
4632 view.update(cx, |view, cx| {
4633 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4634 assert_eq!(view.display_text(cx), "\n");
4635 assert_eq!(
4636 view.selected_display_ranges(cx),
4637 &[
4638 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4639 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4640 ]
4641 );
4642 });
4643 }
4644
4645 #[gpui::test]
4646 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4647 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4648 let settings = EditorSettings::test(&cx);
4649 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4650 view.update(cx, |view, cx| {
4651 view.select_display_ranges(
4652 &[
4653 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4654 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4655 ],
4656 cx,
4657 )
4658 .unwrap();
4659 });
4660
4661 view.update(cx, |view, cx| {
4662 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4663 assert_eq!(
4664 view.selected_display_ranges(cx),
4665 &[
4666 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4667 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4668 ]
4669 );
4670 });
4671
4672 view.update(cx, |view, cx| {
4673 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4674 assert_eq!(
4675 view.selected_display_ranges(cx),
4676 &[
4677 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4678 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4679 ]
4680 );
4681 });
4682
4683 view.update(cx, |view, cx| {
4684 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4685 assert_eq!(
4686 view.selected_display_ranges(cx),
4687 &[
4688 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4689 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4690 ]
4691 );
4692 });
4693
4694 view.update(cx, |view, cx| {
4695 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4696 assert_eq!(
4697 view.selected_display_ranges(cx),
4698 &[
4699 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4700 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4701 ]
4702 );
4703 });
4704
4705 view.update(cx, |view, cx| {
4706 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4707 assert_eq!(
4708 view.selected_display_ranges(cx),
4709 &[
4710 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4711 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4712 ]
4713 );
4714 });
4715
4716 view.update(cx, |view, cx| {
4717 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4718 assert_eq!(
4719 view.selected_display_ranges(cx),
4720 &[
4721 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4722 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4723 ]
4724 );
4725 });
4726
4727 view.update(cx, |view, cx| {
4728 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4729 assert_eq!(
4730 view.selected_display_ranges(cx),
4731 &[
4732 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4733 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4734 ]
4735 );
4736 });
4737
4738 view.update(cx, |view, cx| {
4739 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4740 assert_eq!(
4741 view.selected_display_ranges(cx),
4742 &[
4743 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4744 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4745 ]
4746 );
4747 });
4748
4749 view.update(cx, |view, cx| {
4750 view.move_right(&MoveRight, cx);
4751 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4752 assert_eq!(
4753 view.selected_display_ranges(cx),
4754 &[
4755 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4756 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4757 ]
4758 );
4759 });
4760
4761 view.update(cx, |view, cx| {
4762 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4763 assert_eq!(
4764 view.selected_display_ranges(cx),
4765 &[
4766 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4767 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4768 ]
4769 );
4770 });
4771
4772 view.update(cx, |view, cx| {
4773 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4774 assert_eq!(
4775 view.selected_display_ranges(cx),
4776 &[
4777 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4778 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4779 ]
4780 );
4781 });
4782 }
4783
4784 #[gpui::test]
4785 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4786 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4787 let settings = EditorSettings::test(&cx);
4788 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4789
4790 view.update(cx, |view, cx| {
4791 view.set_wrap_width(Some(140.), cx);
4792 assert_eq!(
4793 view.display_text(cx),
4794 "use one::{\n two::three::\n four::five\n};"
4795 );
4796
4797 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4798 .unwrap();
4799
4800 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4801 assert_eq!(
4802 view.selected_display_ranges(cx),
4803 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4804 );
4805
4806 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4807 assert_eq!(
4808 view.selected_display_ranges(cx),
4809 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4810 );
4811
4812 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4813 assert_eq!(
4814 view.selected_display_ranges(cx),
4815 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4816 );
4817
4818 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4819 assert_eq!(
4820 view.selected_display_ranges(cx),
4821 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4822 );
4823
4824 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4825 assert_eq!(
4826 view.selected_display_ranges(cx),
4827 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4828 );
4829
4830 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4831 assert_eq!(
4832 view.selected_display_ranges(cx),
4833 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4834 );
4835 });
4836 }
4837
4838 #[gpui::test]
4839 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4840 let buffer = MultiBuffer::build_simple("one two three four", cx);
4841 let settings = EditorSettings::test(&cx);
4842 let (_, view) = cx.add_window(Default::default(), |cx| {
4843 build_editor(buffer.clone(), settings, cx)
4844 });
4845
4846 view.update(cx, |view, cx| {
4847 view.select_display_ranges(
4848 &[
4849 // an empty selection - the preceding word fragment is deleted
4850 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4851 // characters selected - they are deleted
4852 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4853 ],
4854 cx,
4855 )
4856 .unwrap();
4857 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4858 });
4859
4860 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4861
4862 view.update(cx, |view, cx| {
4863 view.select_display_ranges(
4864 &[
4865 // an empty selection - the following word fragment is deleted
4866 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4867 // characters selected - they are deleted
4868 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4869 ],
4870 cx,
4871 )
4872 .unwrap();
4873 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4874 });
4875
4876 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4877 }
4878
4879 #[gpui::test]
4880 fn test_newline(cx: &mut gpui::MutableAppContext) {
4881 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4882 let settings = EditorSettings::test(&cx);
4883 let (_, view) = cx.add_window(Default::default(), |cx| {
4884 build_editor(buffer.clone(), settings, cx)
4885 });
4886
4887 view.update(cx, |view, cx| {
4888 view.select_display_ranges(
4889 &[
4890 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4891 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4892 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4893 ],
4894 cx,
4895 )
4896 .unwrap();
4897
4898 view.newline(&Newline, cx);
4899 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4900 });
4901 }
4902
4903 #[gpui::test]
4904 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4905 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4906 let settings = EditorSettings::test(&cx);
4907 let (_, view) = cx.add_window(Default::default(), |cx| {
4908 build_editor(buffer.clone(), settings, cx)
4909 });
4910
4911 view.update(cx, |view, cx| {
4912 // two selections on the same line
4913 view.select_display_ranges(
4914 &[
4915 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4916 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4917 ],
4918 cx,
4919 )
4920 .unwrap();
4921
4922 // indent from mid-tabstop to full tabstop
4923 view.tab(&Tab, cx);
4924 assert_eq!(view.text(cx), " one two\nthree\n four");
4925 assert_eq!(
4926 view.selected_display_ranges(cx),
4927 &[
4928 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4929 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4930 ]
4931 );
4932
4933 // outdent from 1 tabstop to 0 tabstops
4934 view.outdent(&Outdent, cx);
4935 assert_eq!(view.text(cx), "one two\nthree\n four");
4936 assert_eq!(
4937 view.selected_display_ranges(cx),
4938 &[
4939 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4940 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4941 ]
4942 );
4943
4944 // select across line ending
4945 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4946 .unwrap();
4947
4948 // indent and outdent affect only the preceding line
4949 view.tab(&Tab, cx);
4950 assert_eq!(view.text(cx), "one two\n three\n four");
4951 assert_eq!(
4952 view.selected_display_ranges(cx),
4953 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4954 );
4955 view.outdent(&Outdent, cx);
4956 assert_eq!(view.text(cx), "one two\nthree\n four");
4957 assert_eq!(
4958 view.selected_display_ranges(cx),
4959 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4960 );
4961 });
4962 }
4963
4964 #[gpui::test]
4965 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4966 let buffer =
4967 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4968 let settings = EditorSettings::test(&cx);
4969 let (_, view) = cx.add_window(Default::default(), |cx| {
4970 build_editor(buffer.clone(), settings, cx)
4971 });
4972
4973 view.update(cx, |view, cx| {
4974 view.select_display_ranges(
4975 &[
4976 // an empty selection - the preceding character is deleted
4977 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4978 // one character selected - it is deleted
4979 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4980 // a line suffix selected - it is deleted
4981 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4982 ],
4983 cx,
4984 )
4985 .unwrap();
4986 view.backspace(&Backspace, cx);
4987 });
4988
4989 assert_eq!(
4990 buffer.read(cx).read(cx).text(),
4991 "oe two three\nfou five six\nseven ten\n"
4992 );
4993 }
4994
4995 #[gpui::test]
4996 fn test_delete(cx: &mut gpui::MutableAppContext) {
4997 let buffer =
4998 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4999 let settings = EditorSettings::test(&cx);
5000 let (_, view) = cx.add_window(Default::default(), |cx| {
5001 build_editor(buffer.clone(), settings, cx)
5002 });
5003
5004 view.update(cx, |view, cx| {
5005 view.select_display_ranges(
5006 &[
5007 // an empty selection - the following character is deleted
5008 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5009 // one character selected - it is deleted
5010 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5011 // a line suffix selected - it is deleted
5012 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5013 ],
5014 cx,
5015 )
5016 .unwrap();
5017 view.delete(&Delete, cx);
5018 });
5019
5020 assert_eq!(
5021 buffer.read(cx).read(cx).text(),
5022 "on two three\nfou five six\nseven ten\n"
5023 );
5024 }
5025
5026 #[gpui::test]
5027 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5028 let settings = EditorSettings::test(&cx);
5029 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5030 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5031 view.update(cx, |view, cx| {
5032 view.select_display_ranges(
5033 &[
5034 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5035 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5036 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5037 ],
5038 cx,
5039 )
5040 .unwrap();
5041 view.delete_line(&DeleteLine, cx);
5042 assert_eq!(view.display_text(cx), "ghi");
5043 assert_eq!(
5044 view.selected_display_ranges(cx),
5045 vec![
5046 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5047 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5048 ]
5049 );
5050 });
5051
5052 let settings = EditorSettings::test(&cx);
5053 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5054 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5055 view.update(cx, |view, cx| {
5056 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
5057 .unwrap();
5058 view.delete_line(&DeleteLine, cx);
5059 assert_eq!(view.display_text(cx), "ghi\n");
5060 assert_eq!(
5061 view.selected_display_ranges(cx),
5062 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5063 );
5064 });
5065 }
5066
5067 #[gpui::test]
5068 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5069 let settings = EditorSettings::test(&cx);
5070 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5071 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5072 view.update(cx, |view, cx| {
5073 view.select_display_ranges(
5074 &[
5075 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5076 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5077 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5078 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5079 ],
5080 cx,
5081 )
5082 .unwrap();
5083 view.duplicate_line(&DuplicateLine, cx);
5084 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5085 assert_eq!(
5086 view.selected_display_ranges(cx),
5087 vec![
5088 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5089 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5090 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5091 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5092 ]
5093 );
5094 });
5095
5096 let settings = EditorSettings::test(&cx);
5097 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5098 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5099 view.update(cx, |view, cx| {
5100 view.select_display_ranges(
5101 &[
5102 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5103 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5104 ],
5105 cx,
5106 )
5107 .unwrap();
5108 view.duplicate_line(&DuplicateLine, cx);
5109 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5110 assert_eq!(
5111 view.selected_display_ranges(cx),
5112 vec![
5113 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5114 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5115 ]
5116 );
5117 });
5118 }
5119
5120 #[gpui::test]
5121 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5122 let settings = EditorSettings::test(&cx);
5123 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5124 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5125 view.update(cx, |view, cx| {
5126 view.fold_ranges(
5127 vec![
5128 Point::new(0, 2)..Point::new(1, 2),
5129 Point::new(2, 3)..Point::new(4, 1),
5130 Point::new(7, 0)..Point::new(8, 4),
5131 ],
5132 cx,
5133 );
5134 view.select_display_ranges(
5135 &[
5136 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5137 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5138 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5139 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5140 ],
5141 cx,
5142 )
5143 .unwrap();
5144 assert_eq!(
5145 view.display_text(cx),
5146 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5147 );
5148
5149 view.move_line_up(&MoveLineUp, cx);
5150 assert_eq!(
5151 view.display_text(cx),
5152 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5153 );
5154 assert_eq!(
5155 view.selected_display_ranges(cx),
5156 vec![
5157 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5158 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5159 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5160 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5161 ]
5162 );
5163 });
5164
5165 view.update(cx, |view, cx| {
5166 view.move_line_down(&MoveLineDown, cx);
5167 assert_eq!(
5168 view.display_text(cx),
5169 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5170 );
5171 assert_eq!(
5172 view.selected_display_ranges(cx),
5173 vec![
5174 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5175 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5176 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5177 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5178 ]
5179 );
5180 });
5181
5182 view.update(cx, |view, cx| {
5183 view.move_line_down(&MoveLineDown, cx);
5184 assert_eq!(
5185 view.display_text(cx),
5186 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5187 );
5188 assert_eq!(
5189 view.selected_display_ranges(cx),
5190 vec![
5191 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5192 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5193 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5194 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5195 ]
5196 );
5197 });
5198
5199 view.update(cx, |view, cx| {
5200 view.move_line_up(&MoveLineUp, cx);
5201 assert_eq!(
5202 view.display_text(cx),
5203 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5204 );
5205 assert_eq!(
5206 view.selected_display_ranges(cx),
5207 vec![
5208 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5209 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5210 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5211 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5212 ]
5213 );
5214 });
5215 }
5216
5217 #[gpui::test]
5218 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5219 let settings = EditorSettings::test(&cx);
5220 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5221 let snapshot = buffer.read(cx).snapshot(cx);
5222 let (_, editor) =
5223 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5224 editor.update(cx, |editor, cx| {
5225 editor.insert_blocks(
5226 [BlockProperties {
5227 position: snapshot.anchor_after(Point::new(2, 0)),
5228 disposition: BlockDisposition::Below,
5229 height: 1,
5230 render: Arc::new(|_| Empty::new().boxed()),
5231 }],
5232 cx,
5233 );
5234 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5235 editor.move_line_down(&MoveLineDown, cx);
5236 });
5237 }
5238
5239 #[gpui::test]
5240 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5241 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5242 let settings = EditorSettings::test(&cx);
5243 let view = cx
5244 .add_window(Default::default(), |cx| {
5245 build_editor(buffer.clone(), settings, cx)
5246 })
5247 .1;
5248
5249 // Cut with three selections. Clipboard text is divided into three slices.
5250 view.update(cx, |view, cx| {
5251 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5252 view.cut(&Cut, cx);
5253 assert_eq!(view.display_text(cx), "two four six ");
5254 });
5255
5256 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5257 view.update(cx, |view, cx| {
5258 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5259 view.paste(&Paste, cx);
5260 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5261 assert_eq!(
5262 view.selected_display_ranges(cx),
5263 &[
5264 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5265 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5266 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5267 ]
5268 );
5269 });
5270
5271 // Paste again but with only two cursors. Since the number of cursors doesn't
5272 // match the number of slices in the clipboard, the entire clipboard text
5273 // is pasted at each cursor.
5274 view.update(cx, |view, cx| {
5275 view.select_ranges(vec![0..0, 31..31], None, cx);
5276 view.handle_input(&Input("( ".into()), cx);
5277 view.paste(&Paste, cx);
5278 view.handle_input(&Input(") ".into()), cx);
5279 assert_eq!(
5280 view.display_text(cx),
5281 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5282 );
5283 });
5284
5285 view.update(cx, |view, cx| {
5286 view.select_ranges(vec![0..0], None, cx);
5287 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5288 assert_eq!(
5289 view.display_text(cx),
5290 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5291 );
5292 });
5293
5294 // Cut with three selections, one of which is full-line.
5295 view.update(cx, |view, cx| {
5296 view.select_display_ranges(
5297 &[
5298 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5299 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5300 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5301 ],
5302 cx,
5303 )
5304 .unwrap();
5305 view.cut(&Cut, cx);
5306 assert_eq!(
5307 view.display_text(cx),
5308 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5309 );
5310 });
5311
5312 // Paste with three selections, noticing how the copied selection that was full-line
5313 // gets inserted before the second cursor.
5314 view.update(cx, |view, cx| {
5315 view.select_display_ranges(
5316 &[
5317 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5318 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5319 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5320 ],
5321 cx,
5322 )
5323 .unwrap();
5324 view.paste(&Paste, cx);
5325 assert_eq!(
5326 view.display_text(cx),
5327 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5328 );
5329 assert_eq!(
5330 view.selected_display_ranges(cx),
5331 &[
5332 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5333 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5334 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5335 ]
5336 );
5337 });
5338
5339 // Copy with a single cursor only, which writes the whole line into the clipboard.
5340 view.update(cx, |view, cx| {
5341 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5342 .unwrap();
5343 view.copy(&Copy, cx);
5344 });
5345
5346 // Paste with three selections, noticing how the copied full-line selection is inserted
5347 // before the empty selections but replaces the selection that is non-empty.
5348 view.update(cx, |view, cx| {
5349 view.select_display_ranges(
5350 &[
5351 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5352 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5353 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5354 ],
5355 cx,
5356 )
5357 .unwrap();
5358 view.paste(&Paste, cx);
5359 assert_eq!(
5360 view.display_text(cx),
5361 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5362 );
5363 assert_eq!(
5364 view.selected_display_ranges(cx),
5365 &[
5366 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5367 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5368 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5369 ]
5370 );
5371 });
5372 }
5373
5374 #[gpui::test]
5375 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5376 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5377 let settings = EditorSettings::test(&cx);
5378 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5379 view.update(cx, |view, cx| {
5380 view.select_all(&SelectAll, cx);
5381 assert_eq!(
5382 view.selected_display_ranges(cx),
5383 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5384 );
5385 });
5386 }
5387
5388 #[gpui::test]
5389 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5390 let settings = EditorSettings::test(&cx);
5391 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5392 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5393 view.update(cx, |view, cx| {
5394 view.select_display_ranges(
5395 &[
5396 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5397 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5398 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5399 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5400 ],
5401 cx,
5402 )
5403 .unwrap();
5404 view.select_line(&SelectLine, cx);
5405 assert_eq!(
5406 view.selected_display_ranges(cx),
5407 vec![
5408 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5409 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5410 ]
5411 );
5412 });
5413
5414 view.update(cx, |view, cx| {
5415 view.select_line(&SelectLine, cx);
5416 assert_eq!(
5417 view.selected_display_ranges(cx),
5418 vec![
5419 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5420 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5421 ]
5422 );
5423 });
5424
5425 view.update(cx, |view, cx| {
5426 view.select_line(&SelectLine, cx);
5427 assert_eq!(
5428 view.selected_display_ranges(cx),
5429 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5430 );
5431 });
5432 }
5433
5434 #[gpui::test]
5435 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5436 let settings = EditorSettings::test(&cx);
5437 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5438 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5439 view.update(cx, |view, cx| {
5440 view.fold_ranges(
5441 vec![
5442 Point::new(0, 2)..Point::new(1, 2),
5443 Point::new(2, 3)..Point::new(4, 1),
5444 Point::new(7, 0)..Point::new(8, 4),
5445 ],
5446 cx,
5447 );
5448 view.select_display_ranges(
5449 &[
5450 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5451 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5452 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5453 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5454 ],
5455 cx,
5456 )
5457 .unwrap();
5458 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5459 });
5460
5461 view.update(cx, |view, cx| {
5462 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5463 assert_eq!(
5464 view.display_text(cx),
5465 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5466 );
5467 assert_eq!(
5468 view.selected_display_ranges(cx),
5469 [
5470 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5471 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5472 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5473 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5474 ]
5475 );
5476 });
5477
5478 view.update(cx, |view, cx| {
5479 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5480 .unwrap();
5481 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5482 assert_eq!(
5483 view.display_text(cx),
5484 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5485 );
5486 assert_eq!(
5487 view.selected_display_ranges(cx),
5488 [
5489 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5490 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5491 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5492 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5493 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5494 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5495 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5496 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5497 ]
5498 );
5499 });
5500 }
5501
5502 #[gpui::test]
5503 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5504 let settings = EditorSettings::test(&cx);
5505 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5506 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5507
5508 view.update(cx, |view, cx| {
5509 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5510 .unwrap();
5511 });
5512 view.update(cx, |view, cx| {
5513 view.add_selection_above(&AddSelectionAbove, cx);
5514 assert_eq!(
5515 view.selected_display_ranges(cx),
5516 vec![
5517 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5518 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5519 ]
5520 );
5521 });
5522
5523 view.update(cx, |view, cx| {
5524 view.add_selection_above(&AddSelectionAbove, cx);
5525 assert_eq!(
5526 view.selected_display_ranges(cx),
5527 vec![
5528 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5529 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5530 ]
5531 );
5532 });
5533
5534 view.update(cx, |view, cx| {
5535 view.add_selection_below(&AddSelectionBelow, cx);
5536 assert_eq!(
5537 view.selected_display_ranges(cx),
5538 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5539 );
5540 });
5541
5542 view.update(cx, |view, cx| {
5543 view.add_selection_below(&AddSelectionBelow, cx);
5544 assert_eq!(
5545 view.selected_display_ranges(cx),
5546 vec![
5547 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5548 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5549 ]
5550 );
5551 });
5552
5553 view.update(cx, |view, cx| {
5554 view.add_selection_below(&AddSelectionBelow, cx);
5555 assert_eq!(
5556 view.selected_display_ranges(cx),
5557 vec![
5558 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5559 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5560 ]
5561 );
5562 });
5563
5564 view.update(cx, |view, cx| {
5565 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5566 .unwrap();
5567 });
5568 view.update(cx, |view, cx| {
5569 view.add_selection_below(&AddSelectionBelow, cx);
5570 assert_eq!(
5571 view.selected_display_ranges(cx),
5572 vec![
5573 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5574 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5575 ]
5576 );
5577 });
5578
5579 view.update(cx, |view, cx| {
5580 view.add_selection_below(&AddSelectionBelow, cx);
5581 assert_eq!(
5582 view.selected_display_ranges(cx),
5583 vec![
5584 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5585 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5586 ]
5587 );
5588 });
5589
5590 view.update(cx, |view, cx| {
5591 view.add_selection_above(&AddSelectionAbove, cx);
5592 assert_eq!(
5593 view.selected_display_ranges(cx),
5594 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5595 );
5596 });
5597
5598 view.update(cx, |view, cx| {
5599 view.add_selection_above(&AddSelectionAbove, cx);
5600 assert_eq!(
5601 view.selected_display_ranges(cx),
5602 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5603 );
5604 });
5605
5606 view.update(cx, |view, cx| {
5607 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5608 .unwrap();
5609 view.add_selection_below(&AddSelectionBelow, cx);
5610 assert_eq!(
5611 view.selected_display_ranges(cx),
5612 vec![
5613 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5614 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5615 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5616 ]
5617 );
5618 });
5619
5620 view.update(cx, |view, cx| {
5621 view.add_selection_below(&AddSelectionBelow, cx);
5622 assert_eq!(
5623 view.selected_display_ranges(cx),
5624 vec![
5625 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5626 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5627 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5628 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5629 ]
5630 );
5631 });
5632
5633 view.update(cx, |view, cx| {
5634 view.add_selection_above(&AddSelectionAbove, cx);
5635 assert_eq!(
5636 view.selected_display_ranges(cx),
5637 vec![
5638 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5639 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5640 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5641 ]
5642 );
5643 });
5644
5645 view.update(cx, |view, cx| {
5646 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5647 .unwrap();
5648 });
5649 view.update(cx, |view, cx| {
5650 view.add_selection_above(&AddSelectionAbove, cx);
5651 assert_eq!(
5652 view.selected_display_ranges(cx),
5653 vec![
5654 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5655 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5656 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5657 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5658 ]
5659 );
5660 });
5661
5662 view.update(cx, |view, cx| {
5663 view.add_selection_below(&AddSelectionBelow, cx);
5664 assert_eq!(
5665 view.selected_display_ranges(cx),
5666 vec![
5667 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5668 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5669 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5670 ]
5671 );
5672 });
5673 }
5674
5675 #[gpui::test]
5676 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5677 let settings = cx.read(EditorSettings::test);
5678 let language = Some(Arc::new(Language::new(
5679 LanguageConfig::default(),
5680 Some(tree_sitter_rust::language()),
5681 )));
5682
5683 let text = r#"
5684 use mod1::mod2::{mod3, mod4};
5685
5686 fn fn_1(param1: bool, param2: &str) {
5687 let var1 = "text";
5688 }
5689 "#
5690 .unindent();
5691
5692 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5693 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5694 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5695 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5696 .await;
5697
5698 view.update(&mut cx, |view, cx| {
5699 view.select_display_ranges(
5700 &[
5701 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5702 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5703 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5704 ],
5705 cx,
5706 )
5707 .unwrap();
5708 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5709 });
5710 assert_eq!(
5711 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5712 &[
5713 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5714 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5715 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5716 ]
5717 );
5718
5719 view.update(&mut cx, |view, cx| {
5720 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5721 });
5722 assert_eq!(
5723 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5724 &[
5725 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5726 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5727 ]
5728 );
5729
5730 view.update(&mut cx, |view, cx| {
5731 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5732 });
5733 assert_eq!(
5734 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5735 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5736 );
5737
5738 // Trying to expand the selected syntax node one more time has no effect.
5739 view.update(&mut cx, |view, cx| {
5740 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5741 });
5742 assert_eq!(
5743 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5744 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5745 );
5746
5747 view.update(&mut cx, |view, cx| {
5748 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5749 });
5750 assert_eq!(
5751 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5752 &[
5753 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5754 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5755 ]
5756 );
5757
5758 view.update(&mut cx, |view, cx| {
5759 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5760 });
5761 assert_eq!(
5762 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5763 &[
5764 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5765 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5766 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5767 ]
5768 );
5769
5770 view.update(&mut cx, |view, cx| {
5771 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5772 });
5773 assert_eq!(
5774 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5775 &[
5776 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5777 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5778 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5779 ]
5780 );
5781
5782 // Trying to shrink the selected syntax node one more time has no effect.
5783 view.update(&mut cx, |view, cx| {
5784 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5785 });
5786 assert_eq!(
5787 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5788 &[
5789 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5790 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5791 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5792 ]
5793 );
5794
5795 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5796 // a fold.
5797 view.update(&mut cx, |view, cx| {
5798 view.fold_ranges(
5799 vec![
5800 Point::new(0, 21)..Point::new(0, 24),
5801 Point::new(3, 20)..Point::new(3, 22),
5802 ],
5803 cx,
5804 );
5805 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5806 });
5807 assert_eq!(
5808 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5809 &[
5810 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5811 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5812 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5813 ]
5814 );
5815 }
5816
5817 #[gpui::test]
5818 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5819 let settings = cx.read(EditorSettings::test);
5820 let language = Some(Arc::new(
5821 Language::new(
5822 LanguageConfig {
5823 brackets: vec![
5824 BracketPair {
5825 start: "{".to_string(),
5826 end: "}".to_string(),
5827 close: false,
5828 newline: true,
5829 },
5830 BracketPair {
5831 start: "(".to_string(),
5832 end: ")".to_string(),
5833 close: false,
5834 newline: true,
5835 },
5836 ],
5837 ..Default::default()
5838 },
5839 Some(tree_sitter_rust::language()),
5840 )
5841 .with_indents_query(
5842 r#"
5843 (_ "(" ")" @end) @indent
5844 (_ "{" "}" @end) @indent
5845 "#,
5846 )
5847 .unwrap(),
5848 ));
5849
5850 let text = "fn a() {}";
5851
5852 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5853 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5854 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5855 editor
5856 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5857 .await;
5858
5859 editor.update(&mut cx, |editor, cx| {
5860 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5861 editor.newline(&Newline, cx);
5862 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5863 assert_eq!(
5864 editor.selected_ranges(cx),
5865 &[
5866 Point::new(1, 4)..Point::new(1, 4),
5867 Point::new(3, 4)..Point::new(3, 4),
5868 Point::new(5, 0)..Point::new(5, 0)
5869 ]
5870 );
5871 });
5872 }
5873
5874 #[gpui::test]
5875 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5876 let settings = cx.read(EditorSettings::test);
5877 let language = Some(Arc::new(Language::new(
5878 LanguageConfig {
5879 brackets: vec![
5880 BracketPair {
5881 start: "{".to_string(),
5882 end: "}".to_string(),
5883 close: true,
5884 newline: true,
5885 },
5886 BracketPair {
5887 start: "/*".to_string(),
5888 end: " */".to_string(),
5889 close: true,
5890 newline: true,
5891 },
5892 ],
5893 ..Default::default()
5894 },
5895 Some(tree_sitter_rust::language()),
5896 )));
5897
5898 let text = r#"
5899 a
5900
5901 /
5902
5903 "#
5904 .unindent();
5905
5906 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5907 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5908 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5909 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5910 .await;
5911
5912 view.update(&mut cx, |view, cx| {
5913 view.select_display_ranges(
5914 &[
5915 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5916 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5917 ],
5918 cx,
5919 )
5920 .unwrap();
5921 view.handle_input(&Input("{".to_string()), cx);
5922 view.handle_input(&Input("{".to_string()), cx);
5923 view.handle_input(&Input("{".to_string()), cx);
5924 assert_eq!(
5925 view.text(cx),
5926 "
5927 {{{}}}
5928 {{{}}}
5929 /
5930
5931 "
5932 .unindent()
5933 );
5934
5935 view.move_right(&MoveRight, cx);
5936 view.handle_input(&Input("}".to_string()), cx);
5937 view.handle_input(&Input("}".to_string()), cx);
5938 view.handle_input(&Input("}".to_string()), cx);
5939 assert_eq!(
5940 view.text(cx),
5941 "
5942 {{{}}}}
5943 {{{}}}}
5944 /
5945
5946 "
5947 .unindent()
5948 );
5949
5950 view.undo(&Undo, cx);
5951 view.handle_input(&Input("/".to_string()), cx);
5952 view.handle_input(&Input("*".to_string()), cx);
5953 assert_eq!(
5954 view.text(cx),
5955 "
5956 /* */
5957 /* */
5958 /
5959
5960 "
5961 .unindent()
5962 );
5963
5964 view.undo(&Undo, cx);
5965 view.select_display_ranges(
5966 &[
5967 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5968 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5969 ],
5970 cx,
5971 )
5972 .unwrap();
5973 view.handle_input(&Input("*".to_string()), cx);
5974 assert_eq!(
5975 view.text(cx),
5976 "
5977 a
5978
5979 /*
5980 *
5981 "
5982 .unindent()
5983 );
5984 });
5985 }
5986
5987 #[gpui::test]
5988 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5989 let settings = cx.read(EditorSettings::test);
5990 let language = Some(Arc::new(Language::new(
5991 LanguageConfig {
5992 line_comment: Some("// ".to_string()),
5993 ..Default::default()
5994 },
5995 Some(tree_sitter_rust::language()),
5996 )));
5997
5998 let text = "
5999 fn a() {
6000 //b();
6001 // c();
6002 // d();
6003 }
6004 "
6005 .unindent();
6006
6007 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6008 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6009 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6010
6011 view.update(&mut cx, |editor, cx| {
6012 // If multiple selections intersect a line, the line is only
6013 // toggled once.
6014 editor
6015 .select_display_ranges(
6016 &[
6017 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6018 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6019 ],
6020 cx,
6021 )
6022 .unwrap();
6023 editor.toggle_comments(&ToggleComments, cx);
6024 assert_eq!(
6025 editor.text(cx),
6026 "
6027 fn a() {
6028 b();
6029 c();
6030 d();
6031 }
6032 "
6033 .unindent()
6034 );
6035
6036 // The comment prefix is inserted at the same column for every line
6037 // in a selection.
6038 editor
6039 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
6040 .unwrap();
6041 editor.toggle_comments(&ToggleComments, cx);
6042 assert_eq!(
6043 editor.text(cx),
6044 "
6045 fn a() {
6046 // b();
6047 // c();
6048 // d();
6049 }
6050 "
6051 .unindent()
6052 );
6053
6054 // If a selection ends at the beginning of a line, that line is not toggled.
6055 editor
6056 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
6057 .unwrap();
6058 editor.toggle_comments(&ToggleComments, cx);
6059 assert_eq!(
6060 editor.text(cx),
6061 "
6062 fn a() {
6063 // b();
6064 c();
6065 // d();
6066 }
6067 "
6068 .unindent()
6069 );
6070 });
6071 }
6072
6073 #[gpui::test]
6074 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6075 let settings = EditorSettings::test(cx);
6076 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6077 let multibuffer = cx.add_model(|cx| {
6078 let mut multibuffer = MultiBuffer::new(0);
6079 multibuffer.push_excerpt(
6080 ExcerptProperties {
6081 buffer: &buffer,
6082 range: Point::new(0, 0)..Point::new(0, 4),
6083 },
6084 cx,
6085 );
6086 multibuffer.push_excerpt(
6087 ExcerptProperties {
6088 buffer: &buffer,
6089 range: Point::new(1, 0)..Point::new(1, 4),
6090 },
6091 cx,
6092 );
6093 multibuffer
6094 });
6095
6096 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6097
6098 let (_, view) = cx.add_window(Default::default(), |cx| {
6099 build_editor(multibuffer, settings, cx)
6100 });
6101 view.update(cx, |view, cx| {
6102 view.select_display_ranges(
6103 &[
6104 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6105 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6106 ],
6107 cx,
6108 )
6109 .unwrap();
6110
6111 view.handle_input(&Input("X".to_string()), cx);
6112 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6113 assert_eq!(
6114 view.selected_display_ranges(cx),
6115 &[
6116 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6117 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6118 ]
6119 )
6120 });
6121 }
6122
6123 #[gpui::test]
6124 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6125 let settings = EditorSettings::test(cx);
6126 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6127 let multibuffer = cx.add_model(|cx| {
6128 let mut multibuffer = MultiBuffer::new(0);
6129 multibuffer.push_excerpt(
6130 ExcerptProperties {
6131 buffer: &buffer,
6132 range: Point::new(0, 0)..Point::new(1, 4),
6133 },
6134 cx,
6135 );
6136 multibuffer.push_excerpt(
6137 ExcerptProperties {
6138 buffer: &buffer,
6139 range: Point::new(1, 0)..Point::new(2, 4),
6140 },
6141 cx,
6142 );
6143 multibuffer
6144 });
6145
6146 assert_eq!(
6147 multibuffer.read(cx).read(cx).text(),
6148 "aaaa\nbbbb\nbbbb\ncccc"
6149 );
6150
6151 let (_, view) = cx.add_window(Default::default(), |cx| {
6152 build_editor(multibuffer, settings, cx)
6153 });
6154 view.update(cx, |view, cx| {
6155 view.select_display_ranges(
6156 &[
6157 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6158 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6159 ],
6160 cx,
6161 )
6162 .unwrap();
6163
6164 view.handle_input(&Input("X".to_string()), cx);
6165 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6166 assert_eq!(
6167 view.selected_display_ranges(cx),
6168 &[
6169 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6170 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6171 ]
6172 )
6173 });
6174 }
6175
6176 #[gpui::test]
6177 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6178 let settings = cx.read(EditorSettings::test);
6179 let language = Some(Arc::new(Language::new(
6180 LanguageConfig {
6181 brackets: vec![
6182 BracketPair {
6183 start: "{".to_string(),
6184 end: "}".to_string(),
6185 close: true,
6186 newline: true,
6187 },
6188 BracketPair {
6189 start: "/* ".to_string(),
6190 end: " */".to_string(),
6191 close: true,
6192 newline: true,
6193 },
6194 ],
6195 ..Default::default()
6196 },
6197 Some(tree_sitter_rust::language()),
6198 )));
6199
6200 let text = concat!(
6201 "{ }\n", // Suppress rustfmt
6202 " x\n", //
6203 " /* */\n", //
6204 "x\n", //
6205 "{{} }\n", //
6206 );
6207
6208 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6209 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6210 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6211 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6212 .await;
6213
6214 view.update(&mut cx, |view, cx| {
6215 view.select_display_ranges(
6216 &[
6217 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6218 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6219 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6220 ],
6221 cx,
6222 )
6223 .unwrap();
6224 view.newline(&Newline, cx);
6225
6226 assert_eq!(
6227 view.buffer().read(cx).read(cx).text(),
6228 concat!(
6229 "{ \n", // Suppress rustfmt
6230 "\n", //
6231 "}\n", //
6232 " x\n", //
6233 " /* \n", //
6234 " \n", //
6235 " */\n", //
6236 "x\n", //
6237 "{{} \n", //
6238 "}\n", //
6239 )
6240 );
6241 });
6242 }
6243
6244 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6245 let point = DisplayPoint::new(row as u32, column as u32);
6246 point..point
6247 }
6248
6249 fn build_editor(
6250 buffer: ModelHandle<MultiBuffer>,
6251 settings: EditorSettings,
6252 cx: &mut ViewContext<Editor>,
6253 ) -> Editor {
6254 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6255 }
6256}
6257
6258trait RangeExt<T> {
6259 fn sorted(&self) -> Range<T>;
6260 fn to_inclusive(&self) -> RangeInclusive<T>;
6261}
6262
6263impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6264 fn sorted(&self) -> Self {
6265 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6266 }
6267
6268 fn to_inclusive(&self) -> RangeInclusive<T> {
6269 self.start.clone()..=self.end.clone()
6270 }
6271}