1#![allow(rustdoc::private_intra_doc_links)]
2//! This is the place where everything editor-related is stored (data-wise) and displayed (ui-wise).
3//! The main point of interest in this crate is [`Editor`] type, which is used in every other Zed part as a user input element.
4//! It comes in different flavors: single line, multiline and a fixed height one.
5//!
6//! Editor contains of multiple large submodules:
7//! * [`element`] — the place where all rendering happens
8//! * [`display_map`] - chunks up text in the editor into the logical blocks, establishes coordinates and mapping between each of them.
9//! Contains all metadata related to text transformations (folds, fake inlay text insertions, soft wraps, tab markup, etc.).
10//! * [`inlay_hint_cache`] - is a storage of inlay hints out of LSP requests, responsible for querying LSP and updating `display_map`'s state accordingly.
11//!
12//! All other submodules and structs are mostly concerned with holding editor data about the way it displays current buffer region(s).
13//!
14//! If you're looking to improve Vim mode, you should check out Vim crate that wraps Editor and overrides it's behaviour.
15pub mod actions;
16mod blink_manager;
17pub mod display_map;
18mod editor_settings;
19mod element;
20mod inlay_hint_cache;
21
22mod git;
23mod highlight_matching_bracket;
24mod hover_popover;
25pub mod items;
26mod link_go_to_definition;
27mod mouse_context_menu;
28pub mod movement;
29mod persistence;
30mod rust_analyzer_ext;
31pub mod scroll;
32mod selections_collection;
33
34#[cfg(test)]
35mod editor_tests;
36#[cfg(any(test, feature = "test-support"))]
37pub mod test;
38use ::git::diff::DiffHunk;
39pub(crate) use actions::*;
40use aho_corasick::AhoCorasick;
41use anyhow::{anyhow, Context as _, Result};
42use blink_manager::BlinkManager;
43use client::{Collaborator, ParticipantIndex};
44use clock::ReplicaId;
45use collections::{BTreeMap, Bound, HashMap, HashSet, VecDeque};
46use convert_case::{Case, Casing};
47use copilot::Copilot;
48pub use display_map::DisplayPoint;
49use display_map::*;
50pub use editor_settings::EditorSettings;
51use element::LineWithInvisibles;
52pub use element::{Cursor, EditorElement, HighlightedRange, HighlightedRangeLine};
53use futures::FutureExt;
54use fuzzy::{StringMatch, StringMatchCandidate};
55use git::diff_hunk_to_display;
56use gpui::{
57 div, impl_actions, point, prelude::*, px, relative, rems, size, uniform_list, Action,
58 AnyElement, AppContext, AsyncWindowContext, BackgroundExecutor, Bounds, ClipboardItem, Context,
59 DispatchPhase, ElementId, EventEmitter, FocusHandle, FocusableView, FontId, FontStyle,
60 FontWeight, HighlightStyle, Hsla, InteractiveText, KeyContext, Model, MouseButton,
61 ParentElement, Pixels, Render, SharedString, Styled, StyledText, Subscription, Task, TextStyle,
62 UniformListScrollHandle, View, ViewContext, ViewInputHandler, VisualContext, WeakView,
63 WhiteSpace, WindowContext,
64};
65use highlight_matching_bracket::refresh_matching_bracket_highlights;
66use hover_popover::{hide_hover, HoverState};
67use inlay_hint_cache::{InlayHintCache, InlaySplice, InvalidationStrategy};
68pub use items::MAX_TAB_TITLE_LEN;
69use itertools::Itertools;
70use language::{char_kind, CharKind};
71use language::{
72 language_settings::{self, all_language_settings, InlayHintSettings},
73 markdown, point_from_lsp, AutoindentMode, BracketPair, Buffer, Capability, CodeAction,
74 CodeLabel, Completion, CursorShape, Diagnostic, Documentation, IndentKind, IndentSize,
75 Language, LanguageServerName, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
76};
77
78use link_go_to_definition::{GoToDefinitionLink, InlayHighlight, LinkGoToDefinitionState};
79use lsp::{DiagnosticSeverity, LanguageServerId};
80use mouse_context_menu::MouseContextMenu;
81use movement::TextLayoutDetails;
82use multi_buffer::ToOffsetUtf16;
83pub use multi_buffer::{
84 Anchor, AnchorRangeExt, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot, ToOffset,
85 ToPoint,
86};
87use ordered_float::OrderedFloat;
88use parking_lot::RwLock;
89use project::{FormatTrigger, Location, Project, ProjectPath, ProjectTransaction};
90use rand::prelude::*;
91use rpc::proto::*;
92use scroll::{Autoscroll, OngoingScroll, ScrollAnchor, ScrollManager, ScrollbarAutoHide};
93use selections_collection::{resolve_multiple, MutableSelectionsCollection, SelectionsCollection};
94use serde::{Deserialize, Serialize};
95use settings::{Settings, SettingsStore};
96use smallvec::SmallVec;
97use snippet::Snippet;
98use std::{
99 any::TypeId,
100 borrow::Cow,
101 cmp::{self, Ordering, Reverse},
102 mem,
103 num::NonZeroU32,
104 ops::{ControlFlow, Deref, DerefMut, Range, RangeInclusive},
105 path::Path,
106 sync::Arc,
107 sync::Weak,
108 time::{Duration, Instant},
109};
110pub use sum_tree::Bias;
111use sum_tree::TreeMap;
112use text::{OffsetUtf16, Rope};
113use theme::{
114 observe_buffer_font_size_adjustment, ActiveTheme, PlayerColor, StatusColors, SyntaxTheme,
115 ThemeColors, ThemeSettings,
116};
117use ui::{
118 h_flex, prelude::*, ButtonSize, ButtonStyle, IconButton, IconName, IconSize, ListItem, Popover,
119 Tooltip,
120};
121use util::{post_inc, RangeExt, ResultExt, TryFutureExt};
122use workspace::{searchable::SearchEvent, ItemNavHistory, Pane, SplitDirection, ViewId, Workspace};
123
124const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
125const MAX_LINE_LEN: usize = 1024;
126const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
127const MAX_SELECTION_HISTORY_LEN: usize = 1024;
128const COPILOT_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(75);
129#[doc(hidden)]
130pub const CODE_ACTIONS_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(250);
131#[doc(hidden)]
132pub const DOCUMENT_HIGHLIGHTS_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(75);
133
134pub(crate) const FORMAT_TIMEOUT: Duration = Duration::from_secs(2);
135
136pub fn render_parsed_markdown(
137 element_id: impl Into<ElementId>,
138 parsed: &language::ParsedMarkdown,
139 editor_style: &EditorStyle,
140 workspace: Option<WeakView<Workspace>>,
141 cx: &mut ViewContext<Editor>,
142) -> InteractiveText {
143 let code_span_background_color = cx
144 .theme()
145 .colors()
146 .editor_document_highlight_read_background;
147
148 let highlights = gpui::combine_highlights(
149 parsed.highlights.iter().filter_map(|(range, highlight)| {
150 let highlight = highlight.to_highlight_style(&editor_style.syntax)?;
151 Some((range.clone(), highlight))
152 }),
153 parsed
154 .regions
155 .iter()
156 .zip(&parsed.region_ranges)
157 .filter_map(|(region, range)| {
158 if region.code {
159 Some((
160 range.clone(),
161 HighlightStyle {
162 background_color: Some(code_span_background_color),
163 ..Default::default()
164 },
165 ))
166 } else {
167 None
168 }
169 }),
170 );
171
172 let mut links = Vec::new();
173 let mut link_ranges = Vec::new();
174 for (range, region) in parsed.region_ranges.iter().zip(&parsed.regions) {
175 if let Some(link) = region.link.clone() {
176 links.push(link);
177 link_ranges.push(range.clone());
178 }
179 }
180
181 InteractiveText::new(
182 element_id,
183 StyledText::new(parsed.text.clone()).with_highlights(&editor_style.text, highlights),
184 )
185 .on_click(link_ranges, move |clicked_range_ix, cx| {
186 match &links[clicked_range_ix] {
187 markdown::Link::Web { url } => cx.open_url(url),
188 markdown::Link::Path { path } => {
189 if let Some(workspace) = &workspace {
190 _ = workspace.update(cx, |workspace, cx| {
191 workspace.open_abs_path(path.clone(), false, cx).detach();
192 });
193 }
194 }
195 }
196 })
197}
198
199#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
200pub(crate) enum InlayId {
201 Suggestion(usize),
202 Hint(usize),
203}
204
205impl InlayId {
206 fn id(&self) -> usize {
207 match self {
208 Self::Suggestion(id) => *id,
209 Self::Hint(id) => *id,
210 }
211 }
212}
213
214enum DocumentHighlightRead {}
215enum DocumentHighlightWrite {}
216enum InputComposition {}
217
218#[derive(Copy, Clone, PartialEq, Eq)]
219pub enum Direction {
220 Prev,
221 Next,
222}
223
224pub fn init_settings(cx: &mut AppContext) {
225 EditorSettings::register(cx);
226}
227
228pub fn init(cx: &mut AppContext) {
229 init_settings(cx);
230
231 workspace::register_project_item::<Editor>(cx);
232 workspace::register_followable_item::<Editor>(cx);
233 workspace::register_deserializable_item::<Editor>(cx);
234 cx.observe_new_views(
235 |workspace: &mut Workspace, _cx: &mut ViewContext<Workspace>| {
236 workspace.register_action(Editor::new_file);
237 workspace.register_action(Editor::new_file_in_direction);
238 },
239 )
240 .detach();
241
242 cx.on_action(move |_: &workspace::NewFile, cx| {
243 let app_state = cx.global::<Weak<workspace::AppState>>();
244 if let Some(app_state) = app_state.upgrade() {
245 workspace::open_new(&app_state, cx, |workspace, cx| {
246 Editor::new_file(workspace, &Default::default(), cx)
247 })
248 .detach();
249 }
250 });
251 cx.on_action(move |_: &workspace::NewWindow, cx| {
252 let app_state = cx.global::<Weak<workspace::AppState>>();
253 if let Some(app_state) = app_state.upgrade() {
254 workspace::open_new(&app_state, cx, |workspace, cx| {
255 Editor::new_file(workspace, &Default::default(), cx)
256 })
257 .detach();
258 }
259 });
260}
261
262trait InvalidationRegion {
263 fn ranges(&self) -> &[Range<Anchor>];
264}
265
266#[derive(Clone, Debug, PartialEq)]
267pub enum SelectPhase {
268 Begin {
269 position: DisplayPoint,
270 add: bool,
271 click_count: usize,
272 },
273 BeginColumnar {
274 position: DisplayPoint,
275 goal_column: u32,
276 },
277 Extend {
278 position: DisplayPoint,
279 click_count: usize,
280 },
281 Update {
282 position: DisplayPoint,
283 goal_column: u32,
284 scroll_position: gpui::Point<f32>,
285 },
286 End,
287}
288
289#[derive(Clone, Debug)]
290pub(crate) enum SelectMode {
291 Character,
292 Word(Range<Anchor>),
293 Line(Range<Anchor>),
294 All,
295}
296
297#[derive(Copy, Clone, PartialEq, Eq, Debug)]
298pub enum EditorMode {
299 SingleLine,
300 AutoHeight { max_lines: usize },
301 Full,
302}
303
304#[derive(Clone, Debug)]
305pub enum SoftWrap {
306 None,
307 EditorWidth,
308 Column(u32),
309}
310
311#[derive(Clone)]
312pub struct EditorStyle {
313 pub background: Hsla,
314 pub local_player: PlayerColor,
315 pub text: TextStyle,
316 pub scrollbar_width: Pixels,
317 pub syntax: Arc<SyntaxTheme>,
318 pub status: StatusColors,
319 pub inlays_style: HighlightStyle,
320 pub suggestions_style: HighlightStyle,
321}
322
323impl Default for EditorStyle {
324 fn default() -> Self {
325 Self {
326 background: Hsla::default(),
327 local_player: PlayerColor::default(),
328 text: TextStyle::default(),
329 scrollbar_width: Pixels::default(),
330 syntax: Default::default(),
331 // HACK: Status colors don't have a real default.
332 // We should look into removing the status colors from the editor
333 // style and retrieve them directly from the theme.
334 status: StatusColors::dark(),
335 inlays_style: HighlightStyle::default(),
336 suggestions_style: HighlightStyle::default(),
337 }
338 }
339}
340
341type CompletionId = usize;
342
343// type GetFieldEditorTheme = dyn Fn(&theme::Theme) -> theme::FieldEditor;
344// type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
345
346type BackgroundHighlight = (fn(&ThemeColors) -> Hsla, Vec<Range<Anchor>>);
347type InlayBackgroundHighlight = (fn(&ThemeColors) -> Hsla, Vec<InlayHighlight>);
348
349pub struct Editor {
350 handle: WeakView<Self>,
351 focus_handle: FocusHandle,
352 buffer: Model<MultiBuffer>,
353 display_map: Model<DisplayMap>,
354 pub selections: SelectionsCollection,
355 pub scroll_manager: ScrollManager,
356 columnar_selection_tail: Option<Anchor>,
357 add_selections_state: Option<AddSelectionsState>,
358 select_next_state: Option<SelectNextState>,
359 select_prev_state: Option<SelectNextState>,
360 selection_history: SelectionHistory,
361 autoclose_regions: Vec<AutocloseRegion>,
362 snippet_stack: InvalidationStack<SnippetState>,
363 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
364 ime_transaction: Option<TransactionId>,
365 active_diagnostics: Option<ActiveDiagnosticGroup>,
366 soft_wrap_mode_override: Option<language_settings::SoftWrap>,
367 project: Option<Model<Project>>,
368 completion_provider: Option<Box<dyn CompletionProvider>>,
369 collaboration_hub: Option<Box<dyn CollaborationHub>>,
370 blink_manager: Model<BlinkManager>,
371 show_cursor_names: bool,
372 hovered_cursor: Option<HoveredCursor>,
373 pub show_local_selections: bool,
374 mode: EditorMode,
375 show_gutter: bool,
376 show_wrap_guides: Option<bool>,
377 placeholder_text: Option<Arc<str>>,
378 highlighted_rows: Option<Range<u32>>,
379 background_highlights: BTreeMap<TypeId, BackgroundHighlight>,
380 inlay_background_highlights: TreeMap<Option<TypeId>, InlayBackgroundHighlight>,
381 nav_history: Option<ItemNavHistory>,
382 context_menu: RwLock<Option<ContextMenu>>,
383 mouse_context_menu: Option<MouseContextMenu>,
384 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
385 next_completion_id: CompletionId,
386 available_code_actions: Option<(Model<Buffer>, Arc<[CodeAction]>)>,
387 code_actions_task: Option<Task<()>>,
388 document_highlights_task: Option<Task<()>>,
389 pending_rename: Option<RenameState>,
390 searchable: bool,
391 cursor_shape: CursorShape,
392 collapse_matches: bool,
393 autoindent_mode: Option<AutoindentMode>,
394 workspace: Option<(WeakView<Workspace>, i64)>,
395 keymap_context_layers: BTreeMap<TypeId, KeyContext>,
396 input_enabled: bool,
397 read_only: bool,
398 leader_peer_id: Option<PeerId>,
399 remote_id: Option<ViewId>,
400 hover_state: HoverState,
401 gutter_hovered: bool,
402 link_go_to_definition_state: LinkGoToDefinitionState,
403 copilot_state: CopilotState,
404 inlay_hint_cache: InlayHintCache,
405 next_inlay_id: usize,
406 _subscriptions: Vec<Subscription>,
407 pixel_position_of_newest_cursor: Option<gpui::Point<Pixels>>,
408 gutter_width: Pixels,
409 style: Option<EditorStyle>,
410 editor_actions: Vec<Box<dyn Fn(&mut ViewContext<Self>)>>,
411 show_copilot_suggestions: bool,
412 use_autoclose: bool,
413}
414
415pub struct EditorSnapshot {
416 pub mode: EditorMode,
417 show_gutter: bool,
418 pub display_snapshot: DisplaySnapshot,
419 pub placeholder_text: Option<Arc<str>>,
420 is_focused: bool,
421 scroll_anchor: ScrollAnchor,
422 ongoing_scroll: OngoingScroll,
423}
424
425pub struct GutterDimensions {
426 pub padding: Pixels,
427 pub width: Pixels,
428 pub margin: Pixels,
429}
430
431impl Default for GutterDimensions {
432 fn default() -> Self {
433 Self {
434 padding: Pixels::ZERO,
435 width: Pixels::ZERO,
436 margin: Pixels::ZERO,
437 }
438 }
439}
440
441#[derive(Debug)]
442pub struct RemoteSelection {
443 pub replica_id: ReplicaId,
444 pub selection: Selection<Anchor>,
445 pub cursor_shape: CursorShape,
446 pub peer_id: PeerId,
447 pub line_mode: bool,
448 pub participant_index: Option<ParticipantIndex>,
449 pub user_name: Option<SharedString>,
450}
451
452#[derive(Clone, Debug)]
453struct SelectionHistoryEntry {
454 selections: Arc<[Selection<Anchor>]>,
455 select_next_state: Option<SelectNextState>,
456 select_prev_state: Option<SelectNextState>,
457 add_selections_state: Option<AddSelectionsState>,
458}
459
460enum SelectionHistoryMode {
461 Normal,
462 Undoing,
463 Redoing,
464}
465
466struct HoveredCursor {
467 replica_id: u16,
468 selection_id: usize,
469}
470
471impl Default for SelectionHistoryMode {
472 fn default() -> Self {
473 Self::Normal
474 }
475}
476
477#[derive(Default)]
478struct SelectionHistory {
479 #[allow(clippy::type_complexity)]
480 selections_by_transaction:
481 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
482 mode: SelectionHistoryMode,
483 undo_stack: VecDeque<SelectionHistoryEntry>,
484 redo_stack: VecDeque<SelectionHistoryEntry>,
485}
486
487impl SelectionHistory {
488 fn insert_transaction(
489 &mut self,
490 transaction_id: TransactionId,
491 selections: Arc<[Selection<Anchor>]>,
492 ) {
493 self.selections_by_transaction
494 .insert(transaction_id, (selections, None));
495 }
496
497 #[allow(clippy::type_complexity)]
498 fn transaction(
499 &self,
500 transaction_id: TransactionId,
501 ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
502 self.selections_by_transaction.get(&transaction_id)
503 }
504
505 #[allow(clippy::type_complexity)]
506 fn transaction_mut(
507 &mut self,
508 transaction_id: TransactionId,
509 ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
510 self.selections_by_transaction.get_mut(&transaction_id)
511 }
512
513 fn push(&mut self, entry: SelectionHistoryEntry) {
514 if !entry.selections.is_empty() {
515 match self.mode {
516 SelectionHistoryMode::Normal => {
517 self.push_undo(entry);
518 self.redo_stack.clear();
519 }
520 SelectionHistoryMode::Undoing => self.push_redo(entry),
521 SelectionHistoryMode::Redoing => self.push_undo(entry),
522 }
523 }
524 }
525
526 fn push_undo(&mut self, entry: SelectionHistoryEntry) {
527 if self
528 .undo_stack
529 .back()
530 .map_or(true, |e| e.selections != entry.selections)
531 {
532 self.undo_stack.push_back(entry);
533 if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
534 self.undo_stack.pop_front();
535 }
536 }
537 }
538
539 fn push_redo(&mut self, entry: SelectionHistoryEntry) {
540 if self
541 .redo_stack
542 .back()
543 .map_or(true, |e| e.selections != entry.selections)
544 {
545 self.redo_stack.push_back(entry);
546 if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
547 self.redo_stack.pop_front();
548 }
549 }
550 }
551}
552
553#[derive(Clone, Debug)]
554struct AddSelectionsState {
555 above: bool,
556 stack: Vec<usize>,
557}
558
559#[derive(Clone)]
560struct SelectNextState {
561 query: AhoCorasick,
562 wordwise: bool,
563 done: bool,
564}
565
566impl std::fmt::Debug for SelectNextState {
567 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
568 f.debug_struct(std::any::type_name::<Self>())
569 .field("wordwise", &self.wordwise)
570 .field("done", &self.done)
571 .finish()
572 }
573}
574
575#[derive(Debug)]
576struct AutocloseRegion {
577 selection_id: usize,
578 range: Range<Anchor>,
579 pair: BracketPair,
580}
581
582#[derive(Debug)]
583struct SnippetState {
584 ranges: Vec<Vec<Range<Anchor>>>,
585 active_index: usize,
586}
587
588#[doc(hidden)]
589pub struct RenameState {
590 pub range: Range<Anchor>,
591 pub old_name: Arc<str>,
592 pub editor: View<Editor>,
593 block_id: BlockId,
594}
595
596struct InvalidationStack<T>(Vec<T>);
597
598enum ContextMenu {
599 Completions(CompletionsMenu),
600 CodeActions(CodeActionsMenu),
601}
602
603impl ContextMenu {
604 fn select_first(
605 &mut self,
606 project: Option<&Model<Project>>,
607 cx: &mut ViewContext<Editor>,
608 ) -> bool {
609 if self.visible() {
610 match self {
611 ContextMenu::Completions(menu) => menu.select_first(project, cx),
612 ContextMenu::CodeActions(menu) => menu.select_first(cx),
613 }
614 true
615 } else {
616 false
617 }
618 }
619
620 fn select_prev(
621 &mut self,
622 project: Option<&Model<Project>>,
623 cx: &mut ViewContext<Editor>,
624 ) -> bool {
625 if self.visible() {
626 match self {
627 ContextMenu::Completions(menu) => menu.select_prev(project, cx),
628 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
629 }
630 true
631 } else {
632 false
633 }
634 }
635
636 fn select_next(
637 &mut self,
638 project: Option<&Model<Project>>,
639 cx: &mut ViewContext<Editor>,
640 ) -> bool {
641 if self.visible() {
642 match self {
643 ContextMenu::Completions(menu) => menu.select_next(project, cx),
644 ContextMenu::CodeActions(menu) => menu.select_next(cx),
645 }
646 true
647 } else {
648 false
649 }
650 }
651
652 fn select_last(
653 &mut self,
654 project: Option<&Model<Project>>,
655 cx: &mut ViewContext<Editor>,
656 ) -> bool {
657 if self.visible() {
658 match self {
659 ContextMenu::Completions(menu) => menu.select_last(project, cx),
660 ContextMenu::CodeActions(menu) => menu.select_last(cx),
661 }
662 true
663 } else {
664 false
665 }
666 }
667
668 fn visible(&self) -> bool {
669 match self {
670 ContextMenu::Completions(menu) => menu.visible(),
671 ContextMenu::CodeActions(menu) => menu.visible(),
672 }
673 }
674
675 fn render(
676 &self,
677 cursor_position: DisplayPoint,
678 style: &EditorStyle,
679 max_height: Pixels,
680 workspace: Option<WeakView<Workspace>>,
681 cx: &mut ViewContext<Editor>,
682 ) -> (DisplayPoint, AnyElement) {
683 match self {
684 ContextMenu::Completions(menu) => (
685 cursor_position,
686 menu.render(style, max_height, workspace, cx),
687 ),
688 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style, max_height, cx),
689 }
690 }
691}
692
693#[derive(Clone)]
694struct CompletionsMenu {
695 id: CompletionId,
696 initial_position: Anchor,
697 buffer: Model<Buffer>,
698 completions: Arc<RwLock<Box<[Completion]>>>,
699 match_candidates: Arc<[StringMatchCandidate]>,
700 matches: Arc<[StringMatch]>,
701 selected_item: usize,
702 scroll_handle: UniformListScrollHandle,
703}
704
705impl CompletionsMenu {
706 fn select_first(&mut self, project: Option<&Model<Project>>, cx: &mut ViewContext<Editor>) {
707 self.selected_item = 0;
708 self.scroll_handle.scroll_to_item(self.selected_item);
709 self.attempt_resolve_selected_completion_documentation(project, cx);
710 cx.notify();
711 }
712
713 fn select_prev(&mut self, project: Option<&Model<Project>>, cx: &mut ViewContext<Editor>) {
714 if self.selected_item > 0 {
715 self.selected_item -= 1;
716 } else {
717 self.selected_item = self.matches.len() - 1;
718 }
719 self.scroll_handle.scroll_to_item(self.selected_item);
720 self.attempt_resolve_selected_completion_documentation(project, cx);
721 cx.notify();
722 }
723
724 fn select_next(&mut self, project: Option<&Model<Project>>, cx: &mut ViewContext<Editor>) {
725 if self.selected_item + 1 < self.matches.len() {
726 self.selected_item += 1;
727 } else {
728 self.selected_item = 0;
729 }
730 self.scroll_handle.scroll_to_item(self.selected_item);
731 self.attempt_resolve_selected_completion_documentation(project, cx);
732 cx.notify();
733 }
734
735 fn select_last(&mut self, project: Option<&Model<Project>>, cx: &mut ViewContext<Editor>) {
736 self.selected_item = self.matches.len() - 1;
737 self.scroll_handle.scroll_to_item(self.selected_item);
738 self.attempt_resolve_selected_completion_documentation(project, cx);
739 cx.notify();
740 }
741
742 fn pre_resolve_completion_documentation(
743 &self,
744 editor: &Editor,
745 cx: &mut ViewContext<Editor>,
746 ) -> Option<Task<()>> {
747 let settings = EditorSettings::get_global(cx);
748 if !settings.show_completion_documentation {
749 return None;
750 }
751
752 let Some(provider) = editor.completion_provider.as_ref() else {
753 return None;
754 };
755
756 let resolve_task = provider.resolve_completions(
757 self.matches.iter().map(|m| m.candidate_id).collect(),
758 self.completions.clone(),
759 cx,
760 );
761
762 return Some(cx.spawn(move |this, mut cx| async move {
763 if let Some(true) = resolve_task.await.log_err() {
764 this.update(&mut cx, |_, cx| cx.notify()).ok();
765 }
766 }));
767 }
768
769 fn attempt_resolve_selected_completion_documentation(
770 &mut self,
771 project: Option<&Model<Project>>,
772 cx: &mut ViewContext<Editor>,
773 ) {
774 let settings = EditorSettings::get_global(cx);
775 if !settings.show_completion_documentation {
776 return;
777 }
778
779 let completion_index = self.matches[self.selected_item].candidate_id;
780 let Some(project) = project else {
781 return;
782 };
783
784 let resolve_task = project.update(cx, |project, cx| {
785 project.resolve_completions(vec![completion_index], self.completions.clone(), cx)
786 });
787 cx.spawn(move |this, mut cx| async move {
788 if let Some(true) = resolve_task.await.log_err() {
789 this.update(&mut cx, |_, cx| cx.notify()).ok();
790 }
791 })
792 .detach();
793 }
794
795 fn visible(&self) -> bool {
796 !self.matches.is_empty()
797 }
798
799 fn render(
800 &self,
801 style: &EditorStyle,
802 max_height: Pixels,
803 workspace: Option<WeakView<Workspace>>,
804 cx: &mut ViewContext<Editor>,
805 ) -> AnyElement {
806 let settings = EditorSettings::get_global(cx);
807 let show_completion_documentation = settings.show_completion_documentation;
808
809 let widest_completion_ix = self
810 .matches
811 .iter()
812 .enumerate()
813 .max_by_key(|(_, mat)| {
814 let completions = self.completions.read();
815 let completion = &completions[mat.candidate_id];
816 let documentation = &completion.documentation;
817
818 let mut len = completion.label.text.chars().count();
819 if let Some(Documentation::SingleLine(text)) = documentation {
820 if show_completion_documentation {
821 len += text.chars().count();
822 }
823 }
824
825 len
826 })
827 .map(|(ix, _)| ix);
828
829 let completions = self.completions.clone();
830 let matches = self.matches.clone();
831 let selected_item = self.selected_item;
832 let style = style.clone();
833
834 let multiline_docs = {
835 let mat = &self.matches[selected_item];
836 let multiline_docs = match &self.completions.read()[mat.candidate_id].documentation {
837 Some(Documentation::MultiLinePlainText(text)) => {
838 Some(div().child(SharedString::from(text.clone())))
839 }
840 Some(Documentation::MultiLineMarkdown(parsed)) => Some(div().child(
841 render_parsed_markdown("completions_markdown", parsed, &style, workspace, cx),
842 )),
843 _ => None,
844 };
845 multiline_docs.map(|div| {
846 div.id("multiline_docs")
847 .max_h(max_height)
848 .flex_1()
849 .px_1p5()
850 .py_1()
851 .min_w(px(260.))
852 .max_w(px(640.))
853 .w(px(500.))
854 .overflow_y_scroll()
855 // Prevent a mouse down on documentation from being propagated to the editor,
856 // because that would move the cursor.
857 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
858 })
859 };
860
861 let list = uniform_list(
862 cx.view().clone(),
863 "completions",
864 matches.len(),
865 move |_editor, range, cx| {
866 let start_ix = range.start;
867 let completions_guard = completions.read();
868
869 matches[range]
870 .iter()
871 .enumerate()
872 .map(|(ix, mat)| {
873 let item_ix = start_ix + ix;
874 let candidate_id = mat.candidate_id;
875 let completion = &completions_guard[candidate_id];
876
877 let documentation = if show_completion_documentation {
878 &completion.documentation
879 } else {
880 &None
881 };
882
883 let highlights = gpui::combine_highlights(
884 mat.ranges().map(|range| (range, FontWeight::BOLD.into())),
885 styled_runs_for_code_label(&completion.label, &style.syntax).map(
886 |(range, mut highlight)| {
887 // Ignore font weight for syntax highlighting, as we'll use it
888 // for fuzzy matches.
889 highlight.font_weight = None;
890 (range, highlight)
891 },
892 ),
893 );
894 let completion_label = StyledText::new(completion.label.text.clone())
895 .with_highlights(&style.text, highlights);
896 let documentation_label =
897 if let Some(Documentation::SingleLine(text)) = documentation {
898 if text.trim().is_empty() {
899 None
900 } else {
901 Some(
902 h_flex().ml_4().child(
903 Label::new(text.clone())
904 .size(LabelSize::Small)
905 .color(Color::Muted),
906 ),
907 )
908 }
909 } else {
910 None
911 };
912
913 div().min_w(px(220.)).max_w(px(540.)).child(
914 ListItem::new(mat.candidate_id)
915 .inset(true)
916 .selected(item_ix == selected_item)
917 .on_click(cx.listener(move |editor, _event, cx| {
918 cx.stop_propagation();
919 editor
920 .confirm_completion(
921 &ConfirmCompletion {
922 item_ix: Some(item_ix),
923 },
924 cx,
925 )
926 .map(|task| task.detach_and_log_err(cx));
927 }))
928 .child(h_flex().overflow_hidden().child(completion_label))
929 .end_slot::<Div>(documentation_label),
930 )
931 })
932 .collect()
933 },
934 )
935 .max_h(max_height)
936 .track_scroll(self.scroll_handle.clone())
937 .with_width_from_item(widest_completion_ix);
938
939 Popover::new()
940 .child(list)
941 .when_some(multiline_docs, |popover, multiline_docs| {
942 popover.aside(multiline_docs)
943 })
944 .into_any_element()
945 }
946
947 pub async fn filter(&mut self, query: Option<&str>, executor: BackgroundExecutor) {
948 let mut matches = if let Some(query) = query {
949 fuzzy::match_strings(
950 &self.match_candidates,
951 query,
952 query.chars().any(|c| c.is_uppercase()),
953 100,
954 &Default::default(),
955 executor,
956 )
957 .await
958 } else {
959 self.match_candidates
960 .iter()
961 .enumerate()
962 .map(|(candidate_id, candidate)| StringMatch {
963 candidate_id,
964 score: Default::default(),
965 positions: Default::default(),
966 string: candidate.string.clone(),
967 })
968 .collect()
969 };
970
971 // Remove all candidates where the query's start does not match the start of any word in the candidate
972 if let Some(query) = query {
973 if let Some(query_start) = query.chars().next() {
974 matches.retain(|string_match| {
975 split_words(&string_match.string).any(|word| {
976 // Check that the first codepoint of the word as lowercase matches the first
977 // codepoint of the query as lowercase
978 word.chars()
979 .flat_map(|codepoint| codepoint.to_lowercase())
980 .zip(query_start.to_lowercase())
981 .all(|(word_cp, query_cp)| word_cp == query_cp)
982 })
983 });
984 }
985 }
986
987 let completions = self.completions.read();
988 matches.sort_unstable_by_key(|mat| {
989 let completion = &completions[mat.candidate_id];
990 (
991 completion.lsp_completion.sort_text.as_ref(),
992 Reverse(OrderedFloat(mat.score)),
993 completion.sort_key(),
994 )
995 });
996
997 for mat in &mut matches {
998 let completion = &completions[mat.candidate_id];
999 mat.string = completion.label.text.clone();
1000 for position in &mut mat.positions {
1001 *position += completion.label.filter_range.start;
1002 }
1003 }
1004 drop(completions);
1005
1006 self.matches = matches.into();
1007 self.selected_item = 0;
1008 }
1009}
1010
1011#[derive(Clone)]
1012struct CodeActionsMenu {
1013 actions: Arc<[CodeAction]>,
1014 buffer: Model<Buffer>,
1015 selected_item: usize,
1016 scroll_handle: UniformListScrollHandle,
1017 deployed_from_indicator: bool,
1018}
1019
1020impl CodeActionsMenu {
1021 fn select_first(&mut self, cx: &mut ViewContext<Editor>) {
1022 self.selected_item = 0;
1023 self.scroll_handle.scroll_to_item(self.selected_item);
1024 cx.notify()
1025 }
1026
1027 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
1028 if self.selected_item > 0 {
1029 self.selected_item -= 1;
1030 } else {
1031 self.selected_item = self.actions.len() - 1;
1032 }
1033 self.scroll_handle.scroll_to_item(self.selected_item);
1034 cx.notify();
1035 }
1036
1037 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
1038 if self.selected_item + 1 < self.actions.len() {
1039 self.selected_item += 1;
1040 } else {
1041 self.selected_item = 0;
1042 }
1043 self.scroll_handle.scroll_to_item(self.selected_item);
1044 cx.notify();
1045 }
1046
1047 fn select_last(&mut self, cx: &mut ViewContext<Editor>) {
1048 self.selected_item = self.actions.len() - 1;
1049 self.scroll_handle.scroll_to_item(self.selected_item);
1050 cx.notify()
1051 }
1052
1053 fn visible(&self) -> bool {
1054 !self.actions.is_empty()
1055 }
1056
1057 fn render(
1058 &self,
1059 mut cursor_position: DisplayPoint,
1060 _style: &EditorStyle,
1061 max_height: Pixels,
1062 cx: &mut ViewContext<Editor>,
1063 ) -> (DisplayPoint, AnyElement) {
1064 let actions = self.actions.clone();
1065 let selected_item = self.selected_item;
1066
1067 let element = uniform_list(
1068 cx.view().clone(),
1069 "code_actions_menu",
1070 self.actions.len(),
1071 move |_this, range, cx| {
1072 actions[range.clone()]
1073 .iter()
1074 .enumerate()
1075 .map(|(ix, action)| {
1076 let item_ix = range.start + ix;
1077 let selected = selected_item == item_ix;
1078 let colors = cx.theme().colors();
1079 div()
1080 .px_2()
1081 .text_color(colors.text)
1082 .when(selected, |style| {
1083 style
1084 .bg(colors.element_active)
1085 .text_color(colors.text_accent)
1086 })
1087 .hover(|style| {
1088 style
1089 .bg(colors.element_hover)
1090 .text_color(colors.text_accent)
1091 })
1092 .on_mouse_down(
1093 MouseButton::Left,
1094 cx.listener(move |editor, _, cx| {
1095 cx.stop_propagation();
1096 editor
1097 .confirm_code_action(
1098 &ConfirmCodeAction {
1099 item_ix: Some(item_ix),
1100 },
1101 cx,
1102 )
1103 .map(|task| task.detach_and_log_err(cx));
1104 }),
1105 )
1106 // TASK: It would be good to make lsp_action.title a SharedString to avoid allocating here.
1107 .child(SharedString::from(action.lsp_action.title.clone()))
1108 })
1109 .collect()
1110 },
1111 )
1112 .elevation_1(cx)
1113 .px_2()
1114 .py_1()
1115 .max_h(max_height)
1116 .track_scroll(self.scroll_handle.clone())
1117 .with_width_from_item(
1118 self.actions
1119 .iter()
1120 .enumerate()
1121 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
1122 .map(|(ix, _)| ix),
1123 )
1124 .into_any_element();
1125
1126 if self.deployed_from_indicator {
1127 *cursor_position.column_mut() = 0;
1128 }
1129
1130 (cursor_position, element)
1131 }
1132}
1133
1134pub(crate) struct CopilotState {
1135 excerpt_id: Option<ExcerptId>,
1136 pending_refresh: Task<Option<()>>,
1137 pending_cycling_refresh: Task<Option<()>>,
1138 cycled: bool,
1139 completions: Vec<copilot::Completion>,
1140 active_completion_index: usize,
1141 suggestion: Option<Inlay>,
1142}
1143
1144impl Default for CopilotState {
1145 fn default() -> Self {
1146 Self {
1147 excerpt_id: None,
1148 pending_cycling_refresh: Task::ready(Some(())),
1149 pending_refresh: Task::ready(Some(())),
1150 completions: Default::default(),
1151 active_completion_index: 0,
1152 cycled: false,
1153 suggestion: None,
1154 }
1155 }
1156}
1157
1158impl CopilotState {
1159 fn active_completion(&self) -> Option<&copilot::Completion> {
1160 self.completions.get(self.active_completion_index)
1161 }
1162
1163 fn text_for_active_completion(
1164 &self,
1165 cursor: Anchor,
1166 buffer: &MultiBufferSnapshot,
1167 ) -> Option<&str> {
1168 use language::ToOffset as _;
1169
1170 let completion = self.active_completion()?;
1171 let excerpt_id = self.excerpt_id?;
1172 let completion_buffer = buffer.buffer_for_excerpt(excerpt_id)?;
1173 if excerpt_id != cursor.excerpt_id
1174 || !completion.range.start.is_valid(completion_buffer)
1175 || !completion.range.end.is_valid(completion_buffer)
1176 {
1177 return None;
1178 }
1179
1180 let mut completion_range = completion.range.to_offset(&completion_buffer);
1181 let prefix_len = Self::common_prefix(
1182 completion_buffer.chars_for_range(completion_range.clone()),
1183 completion.text.chars(),
1184 );
1185 completion_range.start += prefix_len;
1186 let suffix_len = Self::common_prefix(
1187 completion_buffer.reversed_chars_for_range(completion_range.clone()),
1188 completion.text[prefix_len..].chars().rev(),
1189 );
1190 completion_range.end = completion_range.end.saturating_sub(suffix_len);
1191
1192 if completion_range.is_empty()
1193 && completion_range.start == cursor.text_anchor.to_offset(&completion_buffer)
1194 {
1195 Some(&completion.text[prefix_len..completion.text.len() - suffix_len])
1196 } else {
1197 None
1198 }
1199 }
1200
1201 fn cycle_completions(&mut self, direction: Direction) {
1202 match direction {
1203 Direction::Prev => {
1204 self.active_completion_index = if self.active_completion_index == 0 {
1205 self.completions.len().saturating_sub(1)
1206 } else {
1207 self.active_completion_index - 1
1208 };
1209 }
1210 Direction::Next => {
1211 if self.completions.len() == 0 {
1212 self.active_completion_index = 0
1213 } else {
1214 self.active_completion_index =
1215 (self.active_completion_index + 1) % self.completions.len();
1216 }
1217 }
1218 }
1219 }
1220
1221 fn push_completion(&mut self, new_completion: copilot::Completion) {
1222 for completion in &self.completions {
1223 if completion.text == new_completion.text && completion.range == new_completion.range {
1224 return;
1225 }
1226 }
1227 self.completions.push(new_completion);
1228 }
1229
1230 fn common_prefix<T1: Iterator<Item = char>, T2: Iterator<Item = char>>(a: T1, b: T2) -> usize {
1231 a.zip(b)
1232 .take_while(|(a, b)| a == b)
1233 .map(|(a, _)| a.len_utf8())
1234 .sum()
1235 }
1236}
1237
1238#[derive(Debug)]
1239struct ActiveDiagnosticGroup {
1240 primary_range: Range<Anchor>,
1241 primary_message: String,
1242 blocks: HashMap<BlockId, Diagnostic>,
1243 is_valid: bool,
1244}
1245
1246#[derive(Serialize, Deserialize)]
1247pub struct ClipboardSelection {
1248 pub len: usize,
1249 pub is_entire_line: bool,
1250 pub first_line_indent: u32,
1251}
1252
1253#[derive(Debug)]
1254pub(crate) struct NavigationData {
1255 cursor_anchor: Anchor,
1256 cursor_position: Point,
1257 scroll_anchor: ScrollAnchor,
1258 scroll_top_row: u32,
1259}
1260
1261enum GotoDefinitionKind {
1262 Symbol,
1263 Type,
1264}
1265
1266#[derive(Debug, Clone)]
1267enum InlayHintRefreshReason {
1268 Toggle(bool),
1269 SettingsChange(InlayHintSettings),
1270 NewLinesShown,
1271 BufferEdited(HashSet<Arc<Language>>),
1272 RefreshRequested,
1273 ExcerptsRemoved(Vec<ExcerptId>),
1274}
1275impl InlayHintRefreshReason {
1276 fn description(&self) -> &'static str {
1277 match self {
1278 Self::Toggle(_) => "toggle",
1279 Self::SettingsChange(_) => "settings change",
1280 Self::NewLinesShown => "new lines shown",
1281 Self::BufferEdited(_) => "buffer edited",
1282 Self::RefreshRequested => "refresh requested",
1283 Self::ExcerptsRemoved(_) => "excerpts removed",
1284 }
1285 }
1286}
1287
1288impl Editor {
1289 pub fn single_line(cx: &mut ViewContext<Self>) -> Self {
1290 let buffer = cx.new_model(|cx| Buffer::new(0, cx.entity_id().as_u64(), String::new()));
1291 let buffer = cx.new_model(|cx| MultiBuffer::singleton(buffer, cx));
1292 Self::new(EditorMode::SingleLine, buffer, None, cx)
1293 }
1294
1295 pub fn multi_line(cx: &mut ViewContext<Self>) -> Self {
1296 let buffer = cx.new_model(|cx| Buffer::new(0, cx.entity_id().as_u64(), String::new()));
1297 let buffer = cx.new_model(|cx| MultiBuffer::singleton(buffer, cx));
1298 Self::new(EditorMode::Full, buffer, None, cx)
1299 }
1300
1301 pub fn auto_height(max_lines: usize, cx: &mut ViewContext<Self>) -> Self {
1302 let buffer = cx.new_model(|cx| Buffer::new(0, cx.entity_id().as_u64(), String::new()));
1303 let buffer = cx.new_model(|cx| MultiBuffer::singleton(buffer, cx));
1304 Self::new(EditorMode::AutoHeight { max_lines }, buffer, None, cx)
1305 }
1306
1307 pub fn for_buffer(
1308 buffer: Model<Buffer>,
1309 project: Option<Model<Project>>,
1310 cx: &mut ViewContext<Self>,
1311 ) -> Self {
1312 let buffer = cx.new_model(|cx| MultiBuffer::singleton(buffer, cx));
1313 Self::new(EditorMode::Full, buffer, project, cx)
1314 }
1315
1316 pub fn for_multibuffer(
1317 buffer: Model<MultiBuffer>,
1318 project: Option<Model<Project>>,
1319 cx: &mut ViewContext<Self>,
1320 ) -> Self {
1321 Self::new(EditorMode::Full, buffer, project, cx)
1322 }
1323
1324 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
1325 let mut clone = Self::new(self.mode, self.buffer.clone(), self.project.clone(), cx);
1326 self.display_map.update(cx, |display_map, cx| {
1327 let snapshot = display_map.snapshot(cx);
1328 clone.display_map.update(cx, |display_map, cx| {
1329 display_map.set_state(&snapshot, cx);
1330 });
1331 });
1332 clone.selections.clone_state(&self.selections);
1333 clone.scroll_manager.clone_state(&self.scroll_manager);
1334 clone.searchable = self.searchable;
1335 clone
1336 }
1337
1338 fn new(
1339 mode: EditorMode,
1340 buffer: Model<MultiBuffer>,
1341 project: Option<Model<Project>>,
1342 cx: &mut ViewContext<Self>,
1343 ) -> Self {
1344 let style = cx.text_style();
1345 let font_size = style.font_size.to_pixels(cx.rem_size());
1346 let display_map = cx.new_model(|cx| {
1347 DisplayMap::new(buffer.clone(), style.font(), font_size, None, 2, 1, cx)
1348 });
1349
1350 let selections = SelectionsCollection::new(display_map.clone(), buffer.clone());
1351
1352 let blink_manager = cx.new_model(|cx| BlinkManager::new(CURSOR_BLINK_INTERVAL, cx));
1353
1354 let soft_wrap_mode_override =
1355 (mode == EditorMode::SingleLine).then(|| language_settings::SoftWrap::None);
1356
1357 let mut project_subscriptions = Vec::new();
1358 if mode == EditorMode::Full {
1359 if let Some(project) = project.as_ref() {
1360 if buffer.read(cx).is_singleton() {
1361 project_subscriptions.push(cx.observe(project, |_, _, cx| {
1362 cx.emit(EditorEvent::TitleChanged);
1363 }));
1364 }
1365 project_subscriptions.push(cx.subscribe(project, |editor, _, event, cx| {
1366 if let project::Event::RefreshInlayHints = event {
1367 editor.refresh_inlay_hints(InlayHintRefreshReason::RefreshRequested, cx);
1368 };
1369 }));
1370 }
1371 }
1372
1373 let inlay_hint_settings = inlay_hint_settings(
1374 selections.newest_anchor().head(),
1375 &buffer.read(cx).snapshot(cx),
1376 cx,
1377 );
1378
1379 let focus_handle = cx.focus_handle();
1380 cx.on_focus(&focus_handle, Self::handle_focus).detach();
1381 cx.on_blur(&focus_handle, Self::handle_blur).detach();
1382
1383 let mut this = Self {
1384 handle: cx.view().downgrade(),
1385 focus_handle,
1386 buffer: buffer.clone(),
1387 display_map: display_map.clone(),
1388 selections,
1389 scroll_manager: ScrollManager::new(),
1390 columnar_selection_tail: None,
1391 add_selections_state: None,
1392 select_next_state: None,
1393 select_prev_state: None,
1394 selection_history: Default::default(),
1395 autoclose_regions: Default::default(),
1396 snippet_stack: Default::default(),
1397 select_larger_syntax_node_stack: Vec::new(),
1398 ime_transaction: Default::default(),
1399 active_diagnostics: None,
1400 soft_wrap_mode_override,
1401 completion_provider: project.clone().map(|project| Box::new(project) as _),
1402 collaboration_hub: project.clone().map(|project| Box::new(project) as _),
1403 project,
1404 blink_manager: blink_manager.clone(),
1405 show_local_selections: true,
1406 mode,
1407 show_gutter: mode == EditorMode::Full,
1408 show_wrap_guides: None,
1409 placeholder_text: None,
1410 highlighted_rows: None,
1411 background_highlights: Default::default(),
1412 inlay_background_highlights: Default::default(),
1413 nav_history: None,
1414 context_menu: RwLock::new(None),
1415 mouse_context_menu: None,
1416 completion_tasks: Default::default(),
1417 next_completion_id: 0,
1418 next_inlay_id: 0,
1419 available_code_actions: Default::default(),
1420 code_actions_task: Default::default(),
1421 document_highlights_task: Default::default(),
1422 pending_rename: Default::default(),
1423 searchable: true,
1424 cursor_shape: Default::default(),
1425 autoindent_mode: Some(AutoindentMode::EachLine),
1426 collapse_matches: false,
1427 workspace: None,
1428 keymap_context_layers: Default::default(),
1429 input_enabled: true,
1430 read_only: false,
1431 use_autoclose: true,
1432 leader_peer_id: None,
1433 remote_id: None,
1434 hover_state: Default::default(),
1435 link_go_to_definition_state: Default::default(),
1436 copilot_state: Default::default(),
1437 inlay_hint_cache: InlayHintCache::new(inlay_hint_settings),
1438 gutter_hovered: false,
1439 pixel_position_of_newest_cursor: None,
1440 gutter_width: Default::default(),
1441 style: None,
1442 show_cursor_names: false,
1443 hovered_cursor: Default::default(),
1444 editor_actions: Default::default(),
1445 show_copilot_suggestions: mode == EditorMode::Full,
1446 _subscriptions: vec![
1447 cx.observe(&buffer, Self::on_buffer_changed),
1448 cx.subscribe(&buffer, Self::on_buffer_event),
1449 cx.observe(&display_map, Self::on_display_map_changed),
1450 cx.observe(&blink_manager, |_, _, cx| cx.notify()),
1451 cx.observe_global::<SettingsStore>(Self::settings_changed),
1452 observe_buffer_font_size_adjustment(cx, |_, cx| cx.notify()),
1453 cx.observe_window_activation(|editor, cx| {
1454 let active = cx.is_window_active();
1455 editor.blink_manager.update(cx, |blink_manager, cx| {
1456 if active {
1457 blink_manager.enable(cx);
1458 } else {
1459 blink_manager.show_cursor(cx);
1460 blink_manager.disable(cx);
1461 }
1462 });
1463 }),
1464 ],
1465 };
1466
1467 this._subscriptions.extend(project_subscriptions);
1468
1469 this.end_selection(cx);
1470 this.scroll_manager.show_scrollbar(cx);
1471
1472 if mode == EditorMode::Full {
1473 let should_auto_hide_scrollbars = cx.should_auto_hide_scrollbars();
1474 cx.set_global(ScrollbarAutoHide(should_auto_hide_scrollbars));
1475 }
1476
1477 this.report_editor_event("open", None, cx);
1478 this
1479 }
1480
1481 fn key_context(&self, cx: &AppContext) -> KeyContext {
1482 let mut key_context = KeyContext::default();
1483 key_context.add("Editor");
1484 let mode = match self.mode {
1485 EditorMode::SingleLine => "single_line",
1486 EditorMode::AutoHeight { .. } => "auto_height",
1487 EditorMode::Full => "full",
1488 };
1489 key_context.set("mode", mode);
1490 if self.pending_rename.is_some() {
1491 key_context.add("renaming");
1492 }
1493 if self.context_menu_visible() {
1494 match self.context_menu.read().as_ref() {
1495 Some(ContextMenu::Completions(_)) => {
1496 key_context.add("menu");
1497 key_context.add("showing_completions")
1498 }
1499 Some(ContextMenu::CodeActions(_)) => {
1500 key_context.add("menu");
1501 key_context.add("showing_code_actions")
1502 }
1503 None => {}
1504 }
1505 }
1506
1507 for layer in self.keymap_context_layers.values() {
1508 key_context.extend(layer);
1509 }
1510
1511 if let Some(extension) = self
1512 .buffer
1513 .read(cx)
1514 .as_singleton()
1515 .and_then(|buffer| buffer.read(cx).file()?.path().extension()?.to_str())
1516 {
1517 key_context.set("extension", extension.to_string());
1518 }
1519
1520 key_context
1521 }
1522
1523 pub fn new_file(
1524 workspace: &mut Workspace,
1525 _: &workspace::NewFile,
1526 cx: &mut ViewContext<Workspace>,
1527 ) {
1528 let project = workspace.project().clone();
1529 if project.read(cx).is_remote() {
1530 cx.propagate();
1531 } else if let Some(buffer) = project
1532 .update(cx, |project, cx| project.create_buffer("", None, cx))
1533 .log_err()
1534 {
1535 workspace.add_item(
1536 Box::new(cx.new_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
1537 cx,
1538 );
1539 }
1540 }
1541
1542 pub fn new_file_in_direction(
1543 workspace: &mut Workspace,
1544 action: &workspace::NewFileInDirection,
1545 cx: &mut ViewContext<Workspace>,
1546 ) {
1547 let project = workspace.project().clone();
1548 if project.read(cx).is_remote() {
1549 cx.propagate();
1550 } else if let Some(buffer) = project
1551 .update(cx, |project, cx| project.create_buffer("", None, cx))
1552 .log_err()
1553 {
1554 workspace.split_item(
1555 action.0,
1556 Box::new(cx.new_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
1557 cx,
1558 );
1559 }
1560 }
1561
1562 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
1563 self.buffer.read(cx).replica_id()
1564 }
1565
1566 pub fn leader_peer_id(&self) -> Option<PeerId> {
1567 self.leader_peer_id
1568 }
1569
1570 pub fn buffer(&self) -> &Model<MultiBuffer> {
1571 &self.buffer
1572 }
1573
1574 pub fn workspace(&self) -> Option<View<Workspace>> {
1575 self.workspace.as_ref()?.0.upgrade()
1576 }
1577
1578 pub fn pane(&self, cx: &AppContext) -> Option<View<Pane>> {
1579 self.workspace()?.read(cx).pane_for(&self.handle.upgrade()?)
1580 }
1581
1582 pub fn title<'a>(&self, cx: &'a AppContext) -> Cow<'a, str> {
1583 self.buffer().read(cx).title(cx)
1584 }
1585
1586 pub fn snapshot(&mut self, cx: &mut WindowContext) -> EditorSnapshot {
1587 EditorSnapshot {
1588 mode: self.mode,
1589 show_gutter: self.show_gutter,
1590 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
1591 scroll_anchor: self.scroll_manager.anchor(),
1592 ongoing_scroll: self.scroll_manager.ongoing_scroll(),
1593 placeholder_text: self.placeholder_text.clone(),
1594 is_focused: self.focus_handle.is_focused(cx),
1595 }
1596 }
1597
1598 pub fn language_at<'a, T: ToOffset>(
1599 &self,
1600 point: T,
1601 cx: &'a AppContext,
1602 ) -> Option<Arc<Language>> {
1603 self.buffer.read(cx).language_at(point, cx)
1604 }
1605
1606 pub fn file_at<'a, T: ToOffset>(
1607 &self,
1608 point: T,
1609 cx: &'a AppContext,
1610 ) -> Option<Arc<dyn language::File>> {
1611 self.buffer.read(cx).read(cx).file_at(point).cloned()
1612 }
1613
1614 pub fn active_excerpt(
1615 &self,
1616 cx: &AppContext,
1617 ) -> Option<(ExcerptId, Model<Buffer>, Range<text::Anchor>)> {
1618 self.buffer
1619 .read(cx)
1620 .excerpt_containing(self.selections.newest_anchor().head(), cx)
1621 }
1622
1623 pub fn mode(&self) -> EditorMode {
1624 self.mode
1625 }
1626
1627 pub fn collaboration_hub(&self) -> Option<&dyn CollaborationHub> {
1628 self.collaboration_hub.as_deref()
1629 }
1630
1631 pub fn set_collaboration_hub(&mut self, hub: Box<dyn CollaborationHub>) {
1632 self.collaboration_hub = Some(hub);
1633 }
1634
1635 pub fn set_completion_provider(&mut self, hub: Box<dyn CompletionProvider>) {
1636 self.completion_provider = Some(hub);
1637 }
1638
1639 pub fn placeholder_text(&self) -> Option<&str> {
1640 self.placeholder_text.as_deref()
1641 }
1642
1643 pub fn set_placeholder_text(
1644 &mut self,
1645 placeholder_text: impl Into<Arc<str>>,
1646 cx: &mut ViewContext<Self>,
1647 ) {
1648 let placeholder_text = Some(placeholder_text.into());
1649 if self.placeholder_text != placeholder_text {
1650 self.placeholder_text = placeholder_text;
1651 cx.notify();
1652 }
1653 }
1654
1655 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1656 self.cursor_shape = cursor_shape;
1657 cx.notify();
1658 }
1659
1660 pub fn set_collapse_matches(&mut self, collapse_matches: bool) {
1661 self.collapse_matches = collapse_matches;
1662 }
1663
1664 pub fn range_for_match<T: std::marker::Copy>(&self, range: &Range<T>) -> Range<T> {
1665 if self.collapse_matches {
1666 return range.start..range.start;
1667 }
1668 range.clone()
1669 }
1670
1671 pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut ViewContext<Self>) {
1672 if self.display_map.read(cx).clip_at_line_ends != clip {
1673 self.display_map
1674 .update(cx, |map, _| map.clip_at_line_ends = clip);
1675 }
1676 }
1677
1678 pub fn set_keymap_context_layer<Tag: 'static>(
1679 &mut self,
1680 context: KeyContext,
1681 cx: &mut ViewContext<Self>,
1682 ) {
1683 self.keymap_context_layers
1684 .insert(TypeId::of::<Tag>(), context);
1685 cx.notify();
1686 }
1687
1688 pub fn remove_keymap_context_layer<Tag: 'static>(&mut self, cx: &mut ViewContext<Self>) {
1689 self.keymap_context_layers.remove(&TypeId::of::<Tag>());
1690 cx.notify();
1691 }
1692
1693 pub fn set_input_enabled(&mut self, input_enabled: bool) {
1694 self.input_enabled = input_enabled;
1695 }
1696
1697 pub fn set_autoindent(&mut self, autoindent: bool) {
1698 if autoindent {
1699 self.autoindent_mode = Some(AutoindentMode::EachLine);
1700 } else {
1701 self.autoindent_mode = None;
1702 }
1703 }
1704
1705 pub fn read_only(&self, cx: &AppContext) -> bool {
1706 self.read_only || self.buffer.read(cx).read_only()
1707 }
1708
1709 pub fn set_read_only(&mut self, read_only: bool) {
1710 self.read_only = read_only;
1711 }
1712
1713 pub fn set_use_autoclose(&mut self, autoclose: bool) {
1714 self.use_autoclose = autoclose;
1715 }
1716
1717 pub fn set_show_copilot_suggestions(&mut self, show_copilot_suggestions: bool) {
1718 self.show_copilot_suggestions = show_copilot_suggestions;
1719 }
1720
1721 fn selections_did_change(
1722 &mut self,
1723 local: bool,
1724 old_cursor_position: &Anchor,
1725 cx: &mut ViewContext<Self>,
1726 ) {
1727 if self.focus_handle.is_focused(cx) && self.leader_peer_id.is_none() {
1728 self.buffer.update(cx, |buffer, cx| {
1729 buffer.set_active_selections(
1730 &self.selections.disjoint_anchors(),
1731 self.selections.line_mode,
1732 self.cursor_shape,
1733 cx,
1734 )
1735 });
1736 }
1737
1738 let display_map = self
1739 .display_map
1740 .update(cx, |display_map, cx| display_map.snapshot(cx));
1741 let buffer = &display_map.buffer_snapshot;
1742 self.add_selections_state = None;
1743 self.select_next_state = None;
1744 self.select_prev_state = None;
1745 self.select_larger_syntax_node_stack.clear();
1746 self.invalidate_autoclose_regions(&self.selections.disjoint_anchors(), buffer);
1747 self.snippet_stack
1748 .invalidate(&self.selections.disjoint_anchors(), buffer);
1749 self.take_rename(false, cx);
1750
1751 let new_cursor_position = self.selections.newest_anchor().head();
1752
1753 self.push_to_nav_history(
1754 old_cursor_position.clone(),
1755 Some(new_cursor_position.to_point(buffer)),
1756 cx,
1757 );
1758
1759 if local {
1760 let new_cursor_position = self.selections.newest_anchor().head();
1761 let mut context_menu = self.context_menu.write();
1762 let completion_menu = match context_menu.as_ref() {
1763 Some(ContextMenu::Completions(menu)) => Some(menu),
1764
1765 _ => {
1766 *context_menu = None;
1767 None
1768 }
1769 };
1770
1771 if let Some(completion_menu) = completion_menu {
1772 let cursor_position = new_cursor_position.to_offset(buffer);
1773 let (word_range, kind) =
1774 buffer.surrounding_word(completion_menu.initial_position.clone());
1775 if kind == Some(CharKind::Word)
1776 && word_range.to_inclusive().contains(&cursor_position)
1777 {
1778 let mut completion_menu = completion_menu.clone();
1779 drop(context_menu);
1780
1781 let query = Self::completion_query(buffer, cursor_position);
1782 cx.spawn(move |this, mut cx| async move {
1783 completion_menu
1784 .filter(query.as_deref(), cx.background_executor().clone())
1785 .await;
1786
1787 this.update(&mut cx, |this, cx| {
1788 let mut context_menu = this.context_menu.write();
1789 let Some(ContextMenu::Completions(menu)) = context_menu.as_ref() else {
1790 return;
1791 };
1792
1793 if menu.id > completion_menu.id {
1794 return;
1795 }
1796
1797 *context_menu = Some(ContextMenu::Completions(completion_menu));
1798 drop(context_menu);
1799 cx.notify();
1800 })
1801 })
1802 .detach();
1803
1804 self.show_completions(&ShowCompletions, cx);
1805 } else {
1806 drop(context_menu);
1807 self.hide_context_menu(cx);
1808 }
1809 } else {
1810 drop(context_menu);
1811 }
1812
1813 hide_hover(self, cx);
1814
1815 if old_cursor_position.to_display_point(&display_map).row()
1816 != new_cursor_position.to_display_point(&display_map).row()
1817 {
1818 self.available_code_actions.take();
1819 }
1820 self.refresh_code_actions(cx);
1821 self.refresh_document_highlights(cx);
1822 refresh_matching_bracket_highlights(self, cx);
1823 self.discard_copilot_suggestion(cx);
1824 }
1825
1826 self.blink_manager.update(cx, BlinkManager::pause_blinking);
1827 cx.emit(EditorEvent::SelectionsChanged { local });
1828
1829 if self.selections.disjoint_anchors().len() == 1 {
1830 cx.emit(SearchEvent::ActiveMatchChanged)
1831 }
1832
1833 cx.notify();
1834 }
1835
1836 pub fn change_selections<R>(
1837 &mut self,
1838 autoscroll: Option<Autoscroll>,
1839 cx: &mut ViewContext<Self>,
1840 change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
1841 ) -> R {
1842 let old_cursor_position = self.selections.newest_anchor().head();
1843 self.push_to_selection_history();
1844
1845 let (changed, result) = self.selections.change_with(cx, change);
1846
1847 if changed {
1848 if let Some(autoscroll) = autoscroll {
1849 self.request_autoscroll(autoscroll, cx);
1850 }
1851 self.selections_did_change(true, &old_cursor_position, cx);
1852 }
1853
1854 result
1855 }
1856
1857 pub fn edit<I, S, T>(&mut self, edits: I, cx: &mut ViewContext<Self>)
1858 where
1859 I: IntoIterator<Item = (Range<S>, T)>,
1860 S: ToOffset,
1861 T: Into<Arc<str>>,
1862 {
1863 if self.read_only(cx) {
1864 return;
1865 }
1866
1867 self.buffer
1868 .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
1869 }
1870
1871 pub fn edit_with_autoindent<I, S, T>(&mut self, edits: I, cx: &mut ViewContext<Self>)
1872 where
1873 I: IntoIterator<Item = (Range<S>, T)>,
1874 S: ToOffset,
1875 T: Into<Arc<str>>,
1876 {
1877 if self.read_only(cx) {
1878 return;
1879 }
1880
1881 self.buffer.update(cx, |buffer, cx| {
1882 buffer.edit(edits, self.autoindent_mode.clone(), cx)
1883 });
1884 }
1885
1886 pub fn edit_with_block_indent<I, S, T>(
1887 &mut self,
1888 edits: I,
1889 original_indent_columns: Vec<u32>,
1890 cx: &mut ViewContext<Self>,
1891 ) where
1892 I: IntoIterator<Item = (Range<S>, T)>,
1893 S: ToOffset,
1894 T: Into<Arc<str>>,
1895 {
1896 if self.read_only(cx) {
1897 return;
1898 }
1899
1900 self.buffer.update(cx, |buffer, cx| {
1901 buffer.edit(
1902 edits,
1903 Some(AutoindentMode::Block {
1904 original_indent_columns,
1905 }),
1906 cx,
1907 )
1908 });
1909 }
1910
1911 fn select(&mut self, phase: SelectPhase, cx: &mut ViewContext<Self>) {
1912 self.hide_context_menu(cx);
1913
1914 match phase {
1915 SelectPhase::Begin {
1916 position,
1917 add,
1918 click_count,
1919 } => self.begin_selection(position, add, click_count, cx),
1920 SelectPhase::BeginColumnar {
1921 position,
1922 goal_column,
1923 } => self.begin_columnar_selection(position, goal_column, cx),
1924 SelectPhase::Extend {
1925 position,
1926 click_count,
1927 } => self.extend_selection(position, click_count, cx),
1928 SelectPhase::Update {
1929 position,
1930 goal_column,
1931 scroll_position,
1932 } => self.update_selection(position, goal_column, scroll_position, cx),
1933 SelectPhase::End => self.end_selection(cx),
1934 }
1935 }
1936
1937 fn extend_selection(
1938 &mut self,
1939 position: DisplayPoint,
1940 click_count: usize,
1941 cx: &mut ViewContext<Self>,
1942 ) {
1943 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1944 let tail = self.selections.newest::<usize>(cx).tail();
1945 self.begin_selection(position, false, click_count, cx);
1946
1947 let position = position.to_offset(&display_map, Bias::Left);
1948 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1949
1950 let mut pending_selection = self
1951 .selections
1952 .pending_anchor()
1953 .expect("extend_selection not called with pending selection");
1954 if position >= tail {
1955 pending_selection.start = tail_anchor;
1956 } else {
1957 pending_selection.end = tail_anchor;
1958 pending_selection.reversed = true;
1959 }
1960
1961 let mut pending_mode = self.selections.pending_mode().unwrap();
1962 match &mut pending_mode {
1963 SelectMode::Word(range) | SelectMode::Line(range) => *range = tail_anchor..tail_anchor,
1964 _ => {}
1965 }
1966
1967 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
1968 s.set_pending(pending_selection, pending_mode)
1969 });
1970 }
1971
1972 fn begin_selection(
1973 &mut self,
1974 position: DisplayPoint,
1975 add: bool,
1976 click_count: usize,
1977 cx: &mut ViewContext<Self>,
1978 ) {
1979 if !self.focus_handle.is_focused(cx) {
1980 cx.focus(&self.focus_handle);
1981 }
1982
1983 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1984 let buffer = &display_map.buffer_snapshot;
1985 let newest_selection = self.selections.newest_anchor().clone();
1986 let position = display_map.clip_point(position, Bias::Left);
1987
1988 let start;
1989 let end;
1990 let mode;
1991 let auto_scroll;
1992 match click_count {
1993 1 => {
1994 start = buffer.anchor_before(position.to_point(&display_map));
1995 end = start.clone();
1996 mode = SelectMode::Character;
1997 auto_scroll = true;
1998 }
1999 2 => {
2000 let range = movement::surrounding_word(&display_map, position);
2001 start = buffer.anchor_before(range.start.to_point(&display_map));
2002 end = buffer.anchor_before(range.end.to_point(&display_map));
2003 mode = SelectMode::Word(start.clone()..end.clone());
2004 auto_scroll = true;
2005 }
2006 3 => {
2007 let position = display_map
2008 .clip_point(position, Bias::Left)
2009 .to_point(&display_map);
2010 let line_start = display_map.prev_line_boundary(position).0;
2011 let next_line_start = buffer.clip_point(
2012 display_map.next_line_boundary(position).0 + Point::new(1, 0),
2013 Bias::Left,
2014 );
2015 start = buffer.anchor_before(line_start);
2016 end = buffer.anchor_before(next_line_start);
2017 mode = SelectMode::Line(start.clone()..end.clone());
2018 auto_scroll = true;
2019 }
2020 _ => {
2021 start = buffer.anchor_before(0);
2022 end = buffer.anchor_before(buffer.len());
2023 mode = SelectMode::All;
2024 auto_scroll = false;
2025 }
2026 }
2027
2028 self.change_selections(auto_scroll.then(|| Autoscroll::newest()), cx, |s| {
2029 if !add {
2030 s.clear_disjoint();
2031 } else if click_count > 1 {
2032 s.delete(newest_selection.id)
2033 }
2034
2035 s.set_pending_anchor_range(start..end, mode);
2036 });
2037 }
2038
2039 fn begin_columnar_selection(
2040 &mut self,
2041 position: DisplayPoint,
2042 goal_column: u32,
2043 cx: &mut ViewContext<Self>,
2044 ) {
2045 if !self.focus_handle.is_focused(cx) {
2046 cx.focus(&self.focus_handle);
2047 }
2048
2049 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2050 let tail = self.selections.newest::<Point>(cx).tail();
2051 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
2052
2053 self.select_columns(
2054 tail.to_display_point(&display_map),
2055 position,
2056 goal_column,
2057 &display_map,
2058 cx,
2059 );
2060 }
2061
2062 fn update_selection(
2063 &mut self,
2064 position: DisplayPoint,
2065 goal_column: u32,
2066 scroll_position: gpui::Point<f32>,
2067 cx: &mut ViewContext<Self>,
2068 ) {
2069 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2070
2071 if let Some(tail) = self.columnar_selection_tail.as_ref() {
2072 let tail = tail.to_display_point(&display_map);
2073 self.select_columns(tail, position, goal_column, &display_map, cx);
2074 } else if let Some(mut pending) = self.selections.pending_anchor() {
2075 let buffer = self.buffer.read(cx).snapshot(cx);
2076 let head;
2077 let tail;
2078 let mode = self.selections.pending_mode().unwrap();
2079 match &mode {
2080 SelectMode::Character => {
2081 head = position.to_point(&display_map);
2082 tail = pending.tail().to_point(&buffer);
2083 }
2084 SelectMode::Word(original_range) => {
2085 let original_display_range = original_range.start.to_display_point(&display_map)
2086 ..original_range.end.to_display_point(&display_map);
2087 let original_buffer_range = original_display_range.start.to_point(&display_map)
2088 ..original_display_range.end.to_point(&display_map);
2089 if movement::is_inside_word(&display_map, position)
2090 || original_display_range.contains(&position)
2091 {
2092 let word_range = movement::surrounding_word(&display_map, position);
2093 if word_range.start < original_display_range.start {
2094 head = word_range.start.to_point(&display_map);
2095 } else {
2096 head = word_range.end.to_point(&display_map);
2097 }
2098 } else {
2099 head = position.to_point(&display_map);
2100 }
2101
2102 if head <= original_buffer_range.start {
2103 tail = original_buffer_range.end;
2104 } else {
2105 tail = original_buffer_range.start;
2106 }
2107 }
2108 SelectMode::Line(original_range) => {
2109 let original_range = original_range.to_point(&display_map.buffer_snapshot);
2110
2111 let position = display_map
2112 .clip_point(position, Bias::Left)
2113 .to_point(&display_map);
2114 let line_start = display_map.prev_line_boundary(position).0;
2115 let next_line_start = buffer.clip_point(
2116 display_map.next_line_boundary(position).0 + Point::new(1, 0),
2117 Bias::Left,
2118 );
2119
2120 if line_start < original_range.start {
2121 head = line_start
2122 } else {
2123 head = next_line_start
2124 }
2125
2126 if head <= original_range.start {
2127 tail = original_range.end;
2128 } else {
2129 tail = original_range.start;
2130 }
2131 }
2132 SelectMode::All => {
2133 return;
2134 }
2135 };
2136
2137 if head < tail {
2138 pending.start = buffer.anchor_before(head);
2139 pending.end = buffer.anchor_before(tail);
2140 pending.reversed = true;
2141 } else {
2142 pending.start = buffer.anchor_before(tail);
2143 pending.end = buffer.anchor_before(head);
2144 pending.reversed = false;
2145 }
2146
2147 self.change_selections(None, cx, |s| {
2148 s.set_pending(pending, mode);
2149 });
2150 } else {
2151 log::error!("update_selection dispatched with no pending selection");
2152 return;
2153 }
2154
2155 self.set_scroll_position(scroll_position, cx);
2156 cx.notify();
2157 }
2158
2159 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
2160 self.columnar_selection_tail.take();
2161 if self.selections.pending_anchor().is_some() {
2162 let selections = self.selections.all::<usize>(cx);
2163 self.change_selections(None, cx, |s| {
2164 s.select(selections);
2165 s.clear_pending();
2166 });
2167 }
2168 }
2169
2170 fn select_columns(
2171 &mut self,
2172 tail: DisplayPoint,
2173 head: DisplayPoint,
2174 goal_column: u32,
2175 display_map: &DisplaySnapshot,
2176 cx: &mut ViewContext<Self>,
2177 ) {
2178 let start_row = cmp::min(tail.row(), head.row());
2179 let end_row = cmp::max(tail.row(), head.row());
2180 let start_column = cmp::min(tail.column(), goal_column);
2181 let end_column = cmp::max(tail.column(), goal_column);
2182 let reversed = start_column < tail.column();
2183
2184 let selection_ranges = (start_row..=end_row)
2185 .filter_map(|row| {
2186 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
2187 let start = display_map
2188 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
2189 .to_point(display_map);
2190 let end = display_map
2191 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
2192 .to_point(display_map);
2193 if reversed {
2194 Some(end..start)
2195 } else {
2196 Some(start..end)
2197 }
2198 } else {
2199 None
2200 }
2201 })
2202 .collect::<Vec<_>>();
2203
2204 self.change_selections(None, cx, |s| {
2205 s.select_ranges(selection_ranges);
2206 });
2207 cx.notify();
2208 }
2209
2210 pub fn has_pending_nonempty_selection(&self) -> bool {
2211 let pending_nonempty_selection = match self.selections.pending_anchor() {
2212 Some(Selection { start, end, .. }) => start != end,
2213 None => false,
2214 };
2215 pending_nonempty_selection || self.columnar_selection_tail.is_some()
2216 }
2217
2218 pub fn has_pending_selection(&self) -> bool {
2219 self.selections.pending_anchor().is_some() || self.columnar_selection_tail.is_some()
2220 }
2221
2222 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
2223 if self.take_rename(false, cx).is_some() {
2224 return;
2225 }
2226
2227 if hide_hover(self, cx) {
2228 return;
2229 }
2230
2231 if self.hide_context_menu(cx).is_some() {
2232 return;
2233 }
2234
2235 if self.discard_copilot_suggestion(cx) {
2236 return;
2237 }
2238
2239 if self.snippet_stack.pop().is_some() {
2240 return;
2241 }
2242
2243 if self.mode == EditorMode::Full {
2244 if self.active_diagnostics.is_some() {
2245 self.dismiss_diagnostics(cx);
2246 return;
2247 }
2248
2249 if self.change_selections(Some(Autoscroll::fit()), cx, |s| s.try_cancel()) {
2250 return;
2251 }
2252 }
2253
2254 cx.propagate();
2255 }
2256
2257 pub fn handle_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
2258 let text: Arc<str> = text.into();
2259
2260 if self.read_only(cx) {
2261 return;
2262 }
2263
2264 let selections = self.selections.all_adjusted(cx);
2265 let mut brace_inserted = false;
2266 let mut edits = Vec::new();
2267 let mut new_selections = Vec::with_capacity(selections.len());
2268 let mut new_autoclose_regions = Vec::new();
2269 let snapshot = self.buffer.read(cx).read(cx);
2270
2271 for (selection, autoclose_region) in
2272 self.selections_with_autoclose_regions(selections, &snapshot)
2273 {
2274 if let Some(scope) = snapshot.language_scope_at(selection.head()) {
2275 // Determine if the inserted text matches the opening or closing
2276 // bracket of any of this language's bracket pairs.
2277 let mut bracket_pair = None;
2278 let mut is_bracket_pair_start = false;
2279 if !text.is_empty() {
2280 // `text` can be empty when an user is using IME (e.g. Chinese Wubi Simplified)
2281 // and they are removing the character that triggered IME popup.
2282 for (pair, enabled) in scope.brackets() {
2283 if enabled && pair.close && pair.start.ends_with(text.as_ref()) {
2284 bracket_pair = Some(pair.clone());
2285 is_bracket_pair_start = true;
2286 break;
2287 } else if pair.end.as_str() == text.as_ref() {
2288 bracket_pair = Some(pair.clone());
2289 break;
2290 }
2291 }
2292 }
2293
2294 if let Some(bracket_pair) = bracket_pair {
2295 if selection.is_empty() {
2296 if is_bracket_pair_start {
2297 let prefix_len = bracket_pair.start.len() - text.len();
2298
2299 // If the inserted text is a suffix of an opening bracket and the
2300 // selection is preceded by the rest of the opening bracket, then
2301 // insert the closing bracket.
2302 let following_text_allows_autoclose = snapshot
2303 .chars_at(selection.start)
2304 .next()
2305 .map_or(true, |c| scope.should_autoclose_before(c));
2306 let preceding_text_matches_prefix = prefix_len == 0
2307 || (selection.start.column >= (prefix_len as u32)
2308 && snapshot.contains_str_at(
2309 Point::new(
2310 selection.start.row,
2311 selection.start.column - (prefix_len as u32),
2312 ),
2313 &bracket_pair.start[..prefix_len],
2314 ));
2315 let autoclose = self.use_autoclose
2316 && snapshot.settings_at(selection.start, cx).use_autoclose;
2317 if autoclose
2318 && following_text_allows_autoclose
2319 && preceding_text_matches_prefix
2320 {
2321 let anchor = snapshot.anchor_before(selection.end);
2322 new_selections.push((selection.map(|_| anchor), text.len()));
2323 new_autoclose_regions.push((
2324 anchor,
2325 text.len(),
2326 selection.id,
2327 bracket_pair.clone(),
2328 ));
2329 edits.push((
2330 selection.range(),
2331 format!("{}{}", text, bracket_pair.end).into(),
2332 ));
2333 brace_inserted = true;
2334 continue;
2335 }
2336 }
2337
2338 if let Some(region) = autoclose_region {
2339 // If the selection is followed by an auto-inserted closing bracket,
2340 // then don't insert that closing bracket again; just move the selection
2341 // past the closing bracket.
2342 let should_skip = selection.end == region.range.end.to_point(&snapshot)
2343 && text.as_ref() == region.pair.end.as_str();
2344 if should_skip {
2345 let anchor = snapshot.anchor_after(selection.end);
2346 new_selections
2347 .push((selection.map(|_| anchor), region.pair.end.len()));
2348 continue;
2349 }
2350 }
2351 }
2352 // If an opening bracket is 1 character long and is typed while
2353 // text is selected, then surround that text with the bracket pair.
2354 else if is_bracket_pair_start && bracket_pair.start.chars().count() == 1 {
2355 edits.push((selection.start..selection.start, text.clone()));
2356 edits.push((
2357 selection.end..selection.end,
2358 bracket_pair.end.as_str().into(),
2359 ));
2360 brace_inserted = true;
2361 new_selections.push((
2362 Selection {
2363 id: selection.id,
2364 start: snapshot.anchor_after(selection.start),
2365 end: snapshot.anchor_before(selection.end),
2366 reversed: selection.reversed,
2367 goal: selection.goal,
2368 },
2369 0,
2370 ));
2371 continue;
2372 }
2373 }
2374 }
2375
2376 // If not handling any auto-close operation, then just replace the selected
2377 // text with the given input and move the selection to the end of the
2378 // newly inserted text.
2379 let anchor = snapshot.anchor_after(selection.end);
2380 new_selections.push((selection.map(|_| anchor), 0));
2381 edits.push((selection.start..selection.end, text.clone()));
2382 }
2383
2384 drop(snapshot);
2385 self.transact(cx, |this, cx| {
2386 this.buffer.update(cx, |buffer, cx| {
2387 buffer.edit(edits, this.autoindent_mode.clone(), cx);
2388 });
2389
2390 let new_anchor_selections = new_selections.iter().map(|e| &e.0);
2391 let new_selection_deltas = new_selections.iter().map(|e| e.1);
2392 let snapshot = this.buffer.read(cx).read(cx);
2393 let new_selections = resolve_multiple::<usize, _>(new_anchor_selections, &snapshot)
2394 .zip(new_selection_deltas)
2395 .map(|(selection, delta)| Selection {
2396 id: selection.id,
2397 start: selection.start + delta,
2398 end: selection.end + delta,
2399 reversed: selection.reversed,
2400 goal: SelectionGoal::None,
2401 })
2402 .collect::<Vec<_>>();
2403
2404 let mut i = 0;
2405 for (position, delta, selection_id, pair) in new_autoclose_regions {
2406 let position = position.to_offset(&snapshot) + delta;
2407 let start = snapshot.anchor_before(position);
2408 let end = snapshot.anchor_after(position);
2409 while let Some(existing_state) = this.autoclose_regions.get(i) {
2410 match existing_state.range.start.cmp(&start, &snapshot) {
2411 Ordering::Less => i += 1,
2412 Ordering::Greater => break,
2413 Ordering::Equal => match end.cmp(&existing_state.range.end, &snapshot) {
2414 Ordering::Less => i += 1,
2415 Ordering::Equal => break,
2416 Ordering::Greater => break,
2417 },
2418 }
2419 }
2420 this.autoclose_regions.insert(
2421 i,
2422 AutocloseRegion {
2423 selection_id,
2424 range: start..end,
2425 pair,
2426 },
2427 );
2428 }
2429
2430 drop(snapshot);
2431 let had_active_copilot_suggestion = this.has_active_copilot_suggestion(cx);
2432 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(new_selections));
2433
2434 if !brace_inserted && EditorSettings::get_global(cx).use_on_type_format {
2435 if let Some(on_type_format_task) =
2436 this.trigger_on_type_formatting(text.to_string(), cx)
2437 {
2438 on_type_format_task.detach_and_log_err(cx);
2439 }
2440 }
2441
2442 if had_active_copilot_suggestion {
2443 this.refresh_copilot_suggestions(true, cx);
2444 if !this.has_active_copilot_suggestion(cx) {
2445 this.trigger_completion_on_input(&text, cx);
2446 }
2447 } else {
2448 this.trigger_completion_on_input(&text, cx);
2449 this.refresh_copilot_suggestions(true, cx);
2450 }
2451 });
2452 }
2453
2454 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
2455 self.transact(cx, |this, cx| {
2456 let (edits, selection_fixup_info): (Vec<_>, Vec<_>) = {
2457 let selections = this.selections.all::<usize>(cx);
2458 let multi_buffer = this.buffer.read(cx);
2459 let buffer = multi_buffer.snapshot(cx);
2460 selections
2461 .iter()
2462 .map(|selection| {
2463 let start_point = selection.start.to_point(&buffer);
2464 let mut indent = buffer.indent_size_for_line(start_point.row);
2465 indent.len = cmp::min(indent.len, start_point.column);
2466 let start = selection.start;
2467 let end = selection.end;
2468 let is_cursor = start == end;
2469 let language_scope = buffer.language_scope_at(start);
2470 let (comment_delimiter, insert_extra_newline) = if let Some(language) =
2471 &language_scope
2472 {
2473 let leading_whitespace_len = buffer
2474 .reversed_chars_at(start)
2475 .take_while(|c| c.is_whitespace() && *c != '\n')
2476 .map(|c| c.len_utf8())
2477 .sum::<usize>();
2478
2479 let trailing_whitespace_len = buffer
2480 .chars_at(end)
2481 .take_while(|c| c.is_whitespace() && *c != '\n')
2482 .map(|c| c.len_utf8())
2483 .sum::<usize>();
2484
2485 let insert_extra_newline =
2486 language.brackets().any(|(pair, enabled)| {
2487 let pair_start = pair.start.trim_end();
2488 let pair_end = pair.end.trim_start();
2489
2490 enabled
2491 && pair.newline
2492 && buffer.contains_str_at(
2493 end + trailing_whitespace_len,
2494 pair_end,
2495 )
2496 && buffer.contains_str_at(
2497 (start - leading_whitespace_len)
2498 .saturating_sub(pair_start.len()),
2499 pair_start,
2500 )
2501 });
2502 // Comment extension on newline is allowed only for cursor selections
2503 let comment_delimiter = language.line_comment_prefix().filter(|_| {
2504 let is_comment_extension_enabled =
2505 multi_buffer.settings_at(0, cx).extend_comment_on_newline;
2506 is_cursor && is_comment_extension_enabled
2507 });
2508 let comment_delimiter = if let Some(delimiter) = comment_delimiter {
2509 buffer
2510 .buffer_line_for_row(start_point.row)
2511 .is_some_and(|(snapshot, range)| {
2512 let mut index_of_first_non_whitespace = 0;
2513 let line_starts_with_comment = snapshot
2514 .chars_for_range(range)
2515 .skip_while(|c| {
2516 let should_skip = c.is_whitespace();
2517 if should_skip {
2518 index_of_first_non_whitespace += 1;
2519 }
2520 should_skip
2521 })
2522 .take(delimiter.len())
2523 .eq(delimiter.chars());
2524 let cursor_is_placed_after_comment_marker =
2525 index_of_first_non_whitespace + delimiter.len()
2526 <= start_point.column as usize;
2527 line_starts_with_comment
2528 && cursor_is_placed_after_comment_marker
2529 })
2530 .then(|| delimiter.clone())
2531 } else {
2532 None
2533 };
2534 (comment_delimiter, insert_extra_newline)
2535 } else {
2536 (None, false)
2537 };
2538
2539 let capacity_for_delimiter = comment_delimiter
2540 .as_deref()
2541 .map(str::len)
2542 .unwrap_or_default();
2543 let mut new_text =
2544 String::with_capacity(1 + capacity_for_delimiter + indent.len as usize);
2545 new_text.push_str("\n");
2546 new_text.extend(indent.chars());
2547 if let Some(delimiter) = &comment_delimiter {
2548 new_text.push_str(&delimiter);
2549 }
2550 if insert_extra_newline {
2551 new_text = new_text.repeat(2);
2552 }
2553
2554 let anchor = buffer.anchor_after(end);
2555 let new_selection = selection.map(|_| anchor);
2556 (
2557 (start..end, new_text),
2558 (insert_extra_newline, new_selection),
2559 )
2560 })
2561 .unzip()
2562 };
2563
2564 this.edit_with_autoindent(edits, cx);
2565 let buffer = this.buffer.read(cx).snapshot(cx);
2566 let new_selections = selection_fixup_info
2567 .into_iter()
2568 .map(|(extra_newline_inserted, new_selection)| {
2569 let mut cursor = new_selection.end.to_point(&buffer);
2570 if extra_newline_inserted {
2571 cursor.row -= 1;
2572 cursor.column = buffer.line_len(cursor.row);
2573 }
2574 new_selection.map(|_| cursor)
2575 })
2576 .collect();
2577
2578 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(new_selections));
2579 this.refresh_copilot_suggestions(true, cx);
2580 });
2581 }
2582
2583 pub fn newline_above(&mut self, _: &NewlineAbove, cx: &mut ViewContext<Self>) {
2584 let buffer = self.buffer.read(cx);
2585 let snapshot = buffer.snapshot(cx);
2586
2587 let mut edits = Vec::new();
2588 let mut rows = Vec::new();
2589 let mut rows_inserted = 0;
2590
2591 for selection in self.selections.all_adjusted(cx) {
2592 let cursor = selection.head();
2593 let row = cursor.row;
2594
2595 let start_of_line = snapshot.clip_point(Point::new(row, 0), Bias::Left);
2596
2597 let newline = "\n".to_string();
2598 edits.push((start_of_line..start_of_line, newline));
2599
2600 rows.push(row + rows_inserted);
2601 rows_inserted += 1;
2602 }
2603
2604 self.transact(cx, |editor, cx| {
2605 editor.edit(edits, cx);
2606
2607 editor.change_selections(Some(Autoscroll::fit()), cx, |s| {
2608 let mut index = 0;
2609 s.move_cursors_with(|map, _, _| {
2610 let row = rows[index];
2611 index += 1;
2612
2613 let point = Point::new(row, 0);
2614 let boundary = map.next_line_boundary(point).1;
2615 let clipped = map.clip_point(boundary, Bias::Left);
2616
2617 (clipped, SelectionGoal::None)
2618 });
2619 });
2620
2621 let mut indent_edits = Vec::new();
2622 let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
2623 for row in rows {
2624 let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
2625 for (row, indent) in indents {
2626 if indent.len == 0 {
2627 continue;
2628 }
2629
2630 let text = match indent.kind {
2631 IndentKind::Space => " ".repeat(indent.len as usize),
2632 IndentKind::Tab => "\t".repeat(indent.len as usize),
2633 };
2634 let point = Point::new(row, 0);
2635 indent_edits.push((point..point, text));
2636 }
2637 }
2638 editor.edit(indent_edits, cx);
2639 });
2640 }
2641
2642 pub fn newline_below(&mut self, _: &NewlineBelow, cx: &mut ViewContext<Self>) {
2643 let buffer = self.buffer.read(cx);
2644 let snapshot = buffer.snapshot(cx);
2645
2646 let mut edits = Vec::new();
2647 let mut rows = Vec::new();
2648 let mut rows_inserted = 0;
2649
2650 for selection in self.selections.all_adjusted(cx) {
2651 let cursor = selection.head();
2652 let row = cursor.row;
2653
2654 let point = Point::new(row + 1, 0);
2655 let start_of_line = snapshot.clip_point(point, Bias::Left);
2656
2657 let newline = "\n".to_string();
2658 edits.push((start_of_line..start_of_line, newline));
2659
2660 rows_inserted += 1;
2661 rows.push(row + rows_inserted);
2662 }
2663
2664 self.transact(cx, |editor, cx| {
2665 editor.edit(edits, cx);
2666
2667 editor.change_selections(Some(Autoscroll::fit()), cx, |s| {
2668 let mut index = 0;
2669 s.move_cursors_with(|map, _, _| {
2670 let row = rows[index];
2671 index += 1;
2672
2673 let point = Point::new(row, 0);
2674 let boundary = map.next_line_boundary(point).1;
2675 let clipped = map.clip_point(boundary, Bias::Left);
2676
2677 (clipped, SelectionGoal::None)
2678 });
2679 });
2680
2681 let mut indent_edits = Vec::new();
2682 let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
2683 for row in rows {
2684 let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
2685 for (row, indent) in indents {
2686 if indent.len == 0 {
2687 continue;
2688 }
2689
2690 let text = match indent.kind {
2691 IndentKind::Space => " ".repeat(indent.len as usize),
2692 IndentKind::Tab => "\t".repeat(indent.len as usize),
2693 };
2694 let point = Point::new(row, 0);
2695 indent_edits.push((point..point, text));
2696 }
2697 }
2698 editor.edit(indent_edits, cx);
2699 });
2700 }
2701
2702 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
2703 self.insert_with_autoindent_mode(
2704 text,
2705 Some(AutoindentMode::Block {
2706 original_indent_columns: Vec::new(),
2707 }),
2708 cx,
2709 );
2710 }
2711
2712 fn insert_with_autoindent_mode(
2713 &mut self,
2714 text: &str,
2715 autoindent_mode: Option<AutoindentMode>,
2716 cx: &mut ViewContext<Self>,
2717 ) {
2718 if self.read_only(cx) {
2719 return;
2720 }
2721
2722 let text: Arc<str> = text.into();
2723 self.transact(cx, |this, cx| {
2724 let old_selections = this.selections.all_adjusted(cx);
2725 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
2726 let anchors = {
2727 let snapshot = buffer.read(cx);
2728 old_selections
2729 .iter()
2730 .map(|s| {
2731 let anchor = snapshot.anchor_after(s.head());
2732 s.map(|_| anchor)
2733 })
2734 .collect::<Vec<_>>()
2735 };
2736 buffer.edit(
2737 old_selections
2738 .iter()
2739 .map(|s| (s.start..s.end, text.clone())),
2740 autoindent_mode,
2741 cx,
2742 );
2743 anchors
2744 });
2745
2746 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
2747 s.select_anchors(selection_anchors);
2748 })
2749 });
2750 }
2751
2752 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
2753 if !EditorSettings::get_global(cx).show_completions_on_input {
2754 return;
2755 }
2756
2757 let selection = self.selections.newest_anchor();
2758 if self
2759 .buffer
2760 .read(cx)
2761 .is_completion_trigger(selection.head(), text, cx)
2762 {
2763 self.show_completions(&ShowCompletions, cx);
2764 } else {
2765 self.hide_context_menu(cx);
2766 }
2767 }
2768
2769 /// If any empty selections is touching the start of its innermost containing autoclose
2770 /// region, expand it to select the brackets.
2771 fn select_autoclose_pair(&mut self, cx: &mut ViewContext<Self>) {
2772 let selections = self.selections.all::<usize>(cx);
2773 let buffer = self.buffer.read(cx).read(cx);
2774 let mut new_selections = Vec::new();
2775 for (mut selection, region) in self.selections_with_autoclose_regions(selections, &buffer) {
2776 if let (Some(region), true) = (region, selection.is_empty()) {
2777 let mut range = region.range.to_offset(&buffer);
2778 if selection.start == range.start {
2779 if range.start >= region.pair.start.len() {
2780 range.start -= region.pair.start.len();
2781 if buffer.contains_str_at(range.start, ®ion.pair.start) {
2782 if buffer.contains_str_at(range.end, ®ion.pair.end) {
2783 range.end += region.pair.end.len();
2784 selection.start = range.start;
2785 selection.end = range.end;
2786 }
2787 }
2788 }
2789 }
2790 }
2791 new_selections.push(selection);
2792 }
2793
2794 drop(buffer);
2795 self.change_selections(None, cx, |selections| selections.select(new_selections));
2796 }
2797
2798 /// Iterate the given selections, and for each one, find the smallest surrounding
2799 /// autoclose region. This uses the ordering of the selections and the autoclose
2800 /// regions to avoid repeated comparisons.
2801 fn selections_with_autoclose_regions<'a, D: ToOffset + Clone>(
2802 &'a self,
2803 selections: impl IntoIterator<Item = Selection<D>>,
2804 buffer: &'a MultiBufferSnapshot,
2805 ) -> impl Iterator<Item = (Selection<D>, Option<&'a AutocloseRegion>)> {
2806 let mut i = 0;
2807 let mut regions = self.autoclose_regions.as_slice();
2808 selections.into_iter().map(move |selection| {
2809 let range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
2810
2811 let mut enclosing = None;
2812 while let Some(pair_state) = regions.get(i) {
2813 if pair_state.range.end.to_offset(buffer) < range.start {
2814 regions = ®ions[i + 1..];
2815 i = 0;
2816 } else if pair_state.range.start.to_offset(buffer) > range.end {
2817 break;
2818 } else {
2819 if pair_state.selection_id == selection.id {
2820 enclosing = Some(pair_state);
2821 }
2822 i += 1;
2823 }
2824 }
2825
2826 (selection.clone(), enclosing)
2827 })
2828 }
2829
2830 /// Remove any autoclose regions that no longer contain their selection.
2831 fn invalidate_autoclose_regions(
2832 &mut self,
2833 mut selections: &[Selection<Anchor>],
2834 buffer: &MultiBufferSnapshot,
2835 ) {
2836 self.autoclose_regions.retain(|state| {
2837 let mut i = 0;
2838 while let Some(selection) = selections.get(i) {
2839 if selection.end.cmp(&state.range.start, buffer).is_lt() {
2840 selections = &selections[1..];
2841 continue;
2842 }
2843 if selection.start.cmp(&state.range.end, buffer).is_gt() {
2844 break;
2845 }
2846 if selection.id == state.selection_id {
2847 return true;
2848 } else {
2849 i += 1;
2850 }
2851 }
2852 false
2853 });
2854 }
2855
2856 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2857 let offset = position.to_offset(buffer);
2858 let (word_range, kind) = buffer.surrounding_word(offset);
2859 if offset > word_range.start && kind == Some(CharKind::Word) {
2860 Some(
2861 buffer
2862 .text_for_range(word_range.start..offset)
2863 .collect::<String>(),
2864 )
2865 } else {
2866 None
2867 }
2868 }
2869
2870 pub fn toggle_inlay_hints(&mut self, _: &ToggleInlayHints, cx: &mut ViewContext<Self>) {
2871 self.refresh_inlay_hints(
2872 InlayHintRefreshReason::Toggle(!self.inlay_hint_cache.enabled),
2873 cx,
2874 );
2875 }
2876
2877 pub fn inlay_hints_enabled(&self) -> bool {
2878 self.inlay_hint_cache.enabled
2879 }
2880
2881 fn refresh_inlay_hints(&mut self, reason: InlayHintRefreshReason, cx: &mut ViewContext<Self>) {
2882 if self.project.is_none() || self.mode != EditorMode::Full {
2883 return;
2884 }
2885
2886 let reason_description = reason.description();
2887 let (invalidate_cache, required_languages) = match reason {
2888 InlayHintRefreshReason::Toggle(enabled) => {
2889 self.inlay_hint_cache.enabled = enabled;
2890 if enabled {
2891 (InvalidationStrategy::RefreshRequested, None)
2892 } else {
2893 self.inlay_hint_cache.clear();
2894 self.splice_inlay_hints(
2895 self.visible_inlay_hints(cx)
2896 .iter()
2897 .map(|inlay| inlay.id)
2898 .collect(),
2899 Vec::new(),
2900 cx,
2901 );
2902 return;
2903 }
2904 }
2905 InlayHintRefreshReason::SettingsChange(new_settings) => {
2906 match self.inlay_hint_cache.update_settings(
2907 &self.buffer,
2908 new_settings,
2909 self.visible_inlay_hints(cx),
2910 cx,
2911 ) {
2912 ControlFlow::Break(Some(InlaySplice {
2913 to_remove,
2914 to_insert,
2915 })) => {
2916 self.splice_inlay_hints(to_remove, to_insert, cx);
2917 return;
2918 }
2919 ControlFlow::Break(None) => return,
2920 ControlFlow::Continue(()) => (InvalidationStrategy::RefreshRequested, None),
2921 }
2922 }
2923 InlayHintRefreshReason::ExcerptsRemoved(excerpts_removed) => {
2924 if let Some(InlaySplice {
2925 to_remove,
2926 to_insert,
2927 }) = self.inlay_hint_cache.remove_excerpts(excerpts_removed)
2928 {
2929 self.splice_inlay_hints(to_remove, to_insert, cx);
2930 }
2931 return;
2932 }
2933 InlayHintRefreshReason::NewLinesShown => (InvalidationStrategy::None, None),
2934 InlayHintRefreshReason::BufferEdited(buffer_languages) => {
2935 (InvalidationStrategy::BufferEdited, Some(buffer_languages))
2936 }
2937 InlayHintRefreshReason::RefreshRequested => {
2938 (InvalidationStrategy::RefreshRequested, None)
2939 }
2940 };
2941
2942 if let Some(InlaySplice {
2943 to_remove,
2944 to_insert,
2945 }) = self.inlay_hint_cache.spawn_hint_refresh(
2946 reason_description,
2947 self.excerpts_for_inlay_hints_query(required_languages.as_ref(), cx),
2948 invalidate_cache,
2949 cx,
2950 ) {
2951 self.splice_inlay_hints(to_remove, to_insert, cx);
2952 }
2953 }
2954
2955 fn visible_inlay_hints(&self, cx: &ViewContext<'_, Editor>) -> Vec<Inlay> {
2956 self.display_map
2957 .read(cx)
2958 .current_inlays()
2959 .filter(move |inlay| {
2960 Some(inlay.id) != self.copilot_state.suggestion.as_ref().map(|h| h.id)
2961 })
2962 .cloned()
2963 .collect()
2964 }
2965
2966 pub fn excerpts_for_inlay_hints_query(
2967 &self,
2968 restrict_to_languages: Option<&HashSet<Arc<Language>>>,
2969 cx: &mut ViewContext<Editor>,
2970 ) -> HashMap<ExcerptId, (Model<Buffer>, clock::Global, Range<usize>)> {
2971 let Some(project) = self.project.as_ref() else {
2972 return HashMap::default();
2973 };
2974 let project = project.read(cx);
2975 let multi_buffer = self.buffer().read(cx);
2976 let multi_buffer_snapshot = multi_buffer.snapshot(cx);
2977 let multi_buffer_visible_start = self
2978 .scroll_manager
2979 .anchor()
2980 .anchor
2981 .to_point(&multi_buffer_snapshot);
2982 let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
2983 multi_buffer_visible_start
2984 + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
2985 Bias::Left,
2986 );
2987 let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
2988 multi_buffer
2989 .range_to_buffer_ranges(multi_buffer_visible_range, cx)
2990 .into_iter()
2991 .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
2992 .filter_map(|(buffer_handle, excerpt_visible_range, excerpt_id)| {
2993 let buffer = buffer_handle.read(cx);
2994 let buffer_file = project::worktree::File::from_dyn(buffer.file())?;
2995 let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
2996 let worktree_entry = buffer_worktree
2997 .read(cx)
2998 .entry_for_id(buffer_file.project_entry_id(cx)?)?;
2999 if worktree_entry.is_ignored {
3000 return None;
3001 }
3002
3003 let language = buffer.language()?;
3004 if let Some(restrict_to_languages) = restrict_to_languages {
3005 if !restrict_to_languages.contains(language) {
3006 return None;
3007 }
3008 }
3009 Some((
3010 excerpt_id,
3011 (
3012 buffer_handle,
3013 buffer.version().clone(),
3014 excerpt_visible_range,
3015 ),
3016 ))
3017 })
3018 .collect()
3019 }
3020
3021 pub fn text_layout_details(&self, cx: &WindowContext) -> TextLayoutDetails {
3022 TextLayoutDetails {
3023 text_system: cx.text_system().clone(),
3024 editor_style: self.style.clone().unwrap(),
3025 rem_size: cx.rem_size(),
3026 }
3027 }
3028
3029 fn splice_inlay_hints(
3030 &self,
3031 to_remove: Vec<InlayId>,
3032 to_insert: Vec<Inlay>,
3033 cx: &mut ViewContext<Self>,
3034 ) {
3035 self.display_map.update(cx, |display_map, cx| {
3036 display_map.splice_inlays(to_remove, to_insert, cx);
3037 });
3038 cx.notify();
3039 }
3040
3041 fn trigger_on_type_formatting(
3042 &self,
3043 input: String,
3044 cx: &mut ViewContext<Self>,
3045 ) -> Option<Task<Result<()>>> {
3046 if input.len() != 1 {
3047 return None;
3048 }
3049
3050 let project = self.project.as_ref()?;
3051 let position = self.selections.newest_anchor().head();
3052 let (buffer, buffer_position) = self
3053 .buffer
3054 .read(cx)
3055 .text_anchor_for_position(position.clone(), cx)?;
3056
3057 // OnTypeFormatting returns a list of edits, no need to pass them between Zed instances,
3058 // hence we do LSP request & edit on host side only — add formats to host's history.
3059 let push_to_lsp_host_history = true;
3060 // If this is not the host, append its history with new edits.
3061 let push_to_client_history = project.read(cx).is_remote();
3062
3063 let on_type_formatting = project.update(cx, |project, cx| {
3064 project.on_type_format(
3065 buffer.clone(),
3066 buffer_position,
3067 input,
3068 push_to_lsp_host_history,
3069 cx,
3070 )
3071 });
3072 Some(cx.spawn(|editor, mut cx| async move {
3073 if let Some(transaction) = on_type_formatting.await? {
3074 if push_to_client_history {
3075 buffer
3076 .update(&mut cx, |buffer, _| {
3077 buffer.push_transaction(transaction, Instant::now());
3078 })
3079 .ok();
3080 }
3081 editor.update(&mut cx, |editor, cx| {
3082 editor.refresh_document_highlights(cx);
3083 })?;
3084 }
3085 Ok(())
3086 }))
3087 }
3088
3089 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
3090 if self.pending_rename.is_some() {
3091 return;
3092 }
3093
3094 let Some(provider) = self.completion_provider.as_ref() else {
3095 return;
3096 };
3097
3098 let position = self.selections.newest_anchor().head();
3099 let (buffer, buffer_position) = if let Some(output) = self
3100 .buffer
3101 .read(cx)
3102 .text_anchor_for_position(position.clone(), cx)
3103 {
3104 output
3105 } else {
3106 return;
3107 };
3108
3109 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
3110 let completions = provider.completions(&buffer, buffer_position, cx);
3111
3112 let id = post_inc(&mut self.next_completion_id);
3113 let task = cx.spawn(|this, mut cx| {
3114 async move {
3115 let completions = completions.await.log_err();
3116 let (menu, pre_resolve_task) = if let Some(completions) = completions {
3117 let mut menu = CompletionsMenu {
3118 id,
3119 initial_position: position,
3120 match_candidates: completions
3121 .iter()
3122 .enumerate()
3123 .map(|(id, completion)| {
3124 StringMatchCandidate::new(
3125 id,
3126 completion.label.text[completion.label.filter_range.clone()]
3127 .into(),
3128 )
3129 })
3130 .collect(),
3131 buffer,
3132 completions: Arc::new(RwLock::new(completions.into())),
3133 matches: Vec::new().into(),
3134 selected_item: 0,
3135 scroll_handle: UniformListScrollHandle::new(),
3136 };
3137 menu.filter(query.as_deref(), cx.background_executor().clone())
3138 .await;
3139
3140 if menu.matches.is_empty() {
3141 (None, None)
3142 } else {
3143 let pre_resolve_task = this
3144 .update(&mut cx, |editor, cx| {
3145 menu.pre_resolve_completion_documentation(editor, cx)
3146 })
3147 .ok()
3148 .flatten();
3149 (Some(menu), pre_resolve_task)
3150 }
3151 } else {
3152 (None, None)
3153 };
3154
3155 this.update(&mut cx, |this, cx| {
3156 this.completion_tasks.retain(|(task_id, _)| *task_id >= id);
3157
3158 let mut context_menu = this.context_menu.write();
3159 match context_menu.as_ref() {
3160 None => {}
3161
3162 Some(ContextMenu::Completions(prev_menu)) => {
3163 if prev_menu.id > id {
3164 return;
3165 }
3166 }
3167
3168 _ => return,
3169 }
3170
3171 if this.focus_handle.is_focused(cx) && menu.is_some() {
3172 let menu = menu.unwrap();
3173 *context_menu = Some(ContextMenu::Completions(menu));
3174 drop(context_menu);
3175 this.discard_copilot_suggestion(cx);
3176 cx.notify();
3177 } else if this.completion_tasks.len() <= 1 {
3178 // If there are no more completion tasks and the last menu was
3179 // empty, we should hide it. If it was already hidden, we should
3180 // also show the copilot suggestion when available.
3181 drop(context_menu);
3182 if this.hide_context_menu(cx).is_none() {
3183 this.update_visible_copilot_suggestion(cx);
3184 }
3185 }
3186 })?;
3187
3188 if let Some(pre_resolve_task) = pre_resolve_task {
3189 pre_resolve_task.await;
3190 }
3191
3192 Ok::<_, anyhow::Error>(())
3193 }
3194 .log_err()
3195 });
3196
3197 self.completion_tasks.push((id, task));
3198 }
3199
3200 pub fn confirm_completion(
3201 &mut self,
3202 action: &ConfirmCompletion,
3203 cx: &mut ViewContext<Self>,
3204 ) -> Option<Task<Result<()>>> {
3205 use language::ToOffset as _;
3206
3207 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
3208 menu
3209 } else {
3210 return None;
3211 };
3212
3213 let mat = completions_menu
3214 .matches
3215 .get(action.item_ix.unwrap_or(completions_menu.selected_item))?;
3216 let buffer_handle = completions_menu.buffer;
3217 let completions = completions_menu.completions.read();
3218 let completion = completions.get(mat.candidate_id)?;
3219 cx.stop_propagation();
3220
3221 let snippet;
3222 let text;
3223 if completion.is_snippet() {
3224 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
3225 text = snippet.as_ref().unwrap().text.clone();
3226 } else {
3227 snippet = None;
3228 text = completion.new_text.clone();
3229 };
3230 let selections = self.selections.all::<usize>(cx);
3231 let buffer = buffer_handle.read(cx);
3232 let old_range = completion.old_range.to_offset(buffer);
3233 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
3234
3235 let newest_selection = self.selections.newest_anchor();
3236 if newest_selection.start.buffer_id != Some(buffer_handle.read(cx).remote_id()) {
3237 return None;
3238 }
3239
3240 let lookbehind = newest_selection
3241 .start
3242 .text_anchor
3243 .to_offset(buffer)
3244 .saturating_sub(old_range.start);
3245 let lookahead = old_range
3246 .end
3247 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
3248 let mut common_prefix_len = old_text
3249 .bytes()
3250 .zip(text.bytes())
3251 .take_while(|(a, b)| a == b)
3252 .count();
3253
3254 let snapshot = self.buffer.read(cx).snapshot(cx);
3255 let mut range_to_replace: Option<Range<isize>> = None;
3256 let mut ranges = Vec::new();
3257 for selection in &selections {
3258 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
3259 let start = selection.start.saturating_sub(lookbehind);
3260 let end = selection.end + lookahead;
3261 if selection.id == newest_selection.id {
3262 range_to_replace = Some(
3263 ((start + common_prefix_len) as isize - selection.start as isize)
3264 ..(end as isize - selection.start as isize),
3265 );
3266 }
3267 ranges.push(start + common_prefix_len..end);
3268 } else {
3269 common_prefix_len = 0;
3270 ranges.clear();
3271 ranges.extend(selections.iter().map(|s| {
3272 if s.id == newest_selection.id {
3273 range_to_replace = Some(
3274 old_range.start.to_offset_utf16(&snapshot).0 as isize
3275 - selection.start as isize
3276 ..old_range.end.to_offset_utf16(&snapshot).0 as isize
3277 - selection.start as isize,
3278 );
3279 old_range.clone()
3280 } else {
3281 s.start..s.end
3282 }
3283 }));
3284 break;
3285 }
3286 }
3287 let text = &text[common_prefix_len..];
3288
3289 cx.emit(EditorEvent::InputHandled {
3290 utf16_range_to_replace: range_to_replace,
3291 text: text.into(),
3292 });
3293
3294 self.transact(cx, |this, cx| {
3295 if let Some(mut snippet) = snippet {
3296 snippet.text = text.to_string();
3297 for tabstop in snippet.tabstops.iter_mut().flatten() {
3298 tabstop.start -= common_prefix_len as isize;
3299 tabstop.end -= common_prefix_len as isize;
3300 }
3301
3302 this.insert_snippet(&ranges, snippet, cx).log_err();
3303 } else {
3304 this.buffer.update(cx, |buffer, cx| {
3305 buffer.edit(
3306 ranges.iter().map(|range| (range.clone(), text)),
3307 this.autoindent_mode.clone(),
3308 cx,
3309 );
3310 });
3311 }
3312
3313 this.refresh_copilot_suggestions(true, cx);
3314 });
3315
3316 let provider = self.completion_provider.as_ref()?;
3317 let apply_edits = provider.apply_additional_edits_for_completion(
3318 buffer_handle,
3319 completion.clone(),
3320 true,
3321 cx,
3322 );
3323 Some(cx.foreground_executor().spawn(async move {
3324 apply_edits.await?;
3325 Ok(())
3326 }))
3327 }
3328
3329 pub fn toggle_code_actions(&mut self, action: &ToggleCodeActions, cx: &mut ViewContext<Self>) {
3330 let mut context_menu = self.context_menu.write();
3331 if matches!(context_menu.as_ref(), Some(ContextMenu::CodeActions(_))) {
3332 *context_menu = None;
3333 cx.notify();
3334 return;
3335 }
3336 drop(context_menu);
3337
3338 let deployed_from_indicator = action.deployed_from_indicator;
3339 let mut task = self.code_actions_task.take();
3340 cx.spawn(|this, mut cx| async move {
3341 while let Some(prev_task) = task {
3342 prev_task.await;
3343 task = this.update(&mut cx, |this, _| this.code_actions_task.take())?;
3344 }
3345
3346 this.update(&mut cx, |this, cx| {
3347 if this.focus_handle.is_focused(cx) {
3348 if let Some((buffer, actions)) = this.available_code_actions.clone() {
3349 this.completion_tasks.clear();
3350 this.discard_copilot_suggestion(cx);
3351 *this.context_menu.write() =
3352 Some(ContextMenu::CodeActions(CodeActionsMenu {
3353 buffer,
3354 actions,
3355 selected_item: Default::default(),
3356 scroll_handle: UniformListScrollHandle::default(),
3357 deployed_from_indicator,
3358 }));
3359 cx.notify();
3360 }
3361 }
3362 })?;
3363
3364 Ok::<_, anyhow::Error>(())
3365 })
3366 .detach_and_log_err(cx);
3367 }
3368
3369 pub fn confirm_code_action(
3370 &mut self,
3371 action: &ConfirmCodeAction,
3372 cx: &mut ViewContext<Self>,
3373 ) -> Option<Task<Result<()>>> {
3374 let actions_menu = if let ContextMenu::CodeActions(menu) = self.hide_context_menu(cx)? {
3375 menu
3376 } else {
3377 return None;
3378 };
3379 let action_ix = action.item_ix.unwrap_or(actions_menu.selected_item);
3380 let action = actions_menu.actions.get(action_ix)?.clone();
3381 let title = action.lsp_action.title.clone();
3382 let buffer = actions_menu.buffer;
3383 let workspace = self.workspace()?;
3384
3385 let apply_code_actions = workspace
3386 .read(cx)
3387 .project()
3388 .clone()
3389 .update(cx, |project, cx| {
3390 project.apply_code_action(buffer, action, true, cx)
3391 });
3392 let workspace = workspace.downgrade();
3393 Some(cx.spawn(|editor, cx| async move {
3394 let project_transaction = apply_code_actions.await?;
3395 Self::open_project_transaction(&editor, workspace, project_transaction, title, cx).await
3396 }))
3397 }
3398
3399 async fn open_project_transaction(
3400 this: &WeakView<Editor>,
3401 workspace: WeakView<Workspace>,
3402 transaction: ProjectTransaction,
3403 title: String,
3404 mut cx: AsyncWindowContext,
3405 ) -> Result<()> {
3406 let replica_id = this.update(&mut cx, |this, cx| this.replica_id(cx))?;
3407
3408 let mut entries = transaction.0.into_iter().collect::<Vec<_>>();
3409 cx.update(|cx| {
3410 entries.sort_unstable_by_key(|(buffer, _)| {
3411 buffer.read(cx).file().map(|f| f.path().clone())
3412 });
3413 })?;
3414
3415 // If the project transaction's edits are all contained within this editor, then
3416 // avoid opening a new editor to display them.
3417
3418 if let Some((buffer, transaction)) = entries.first() {
3419 if entries.len() == 1 {
3420 let excerpt = this.update(&mut cx, |editor, cx| {
3421 editor
3422 .buffer()
3423 .read(cx)
3424 .excerpt_containing(editor.selections.newest_anchor().head(), cx)
3425 })?;
3426 if let Some((_, excerpted_buffer, excerpt_range)) = excerpt {
3427 if excerpted_buffer == *buffer {
3428 let all_edits_within_excerpt = buffer.read_with(&cx, |buffer, _| {
3429 let excerpt_range = excerpt_range.to_offset(buffer);
3430 buffer
3431 .edited_ranges_for_transaction::<usize>(transaction)
3432 .all(|range| {
3433 excerpt_range.start <= range.start
3434 && excerpt_range.end >= range.end
3435 })
3436 })?;
3437
3438 if all_edits_within_excerpt {
3439 return Ok(());
3440 }
3441 }
3442 }
3443 }
3444 } else {
3445 return Ok(());
3446 }
3447
3448 let mut ranges_to_highlight = Vec::new();
3449 let excerpt_buffer = cx.new_model(|cx| {
3450 let mut multibuffer =
3451 MultiBuffer::new(replica_id, Capability::ReadWrite).with_title(title);
3452 for (buffer_handle, transaction) in &entries {
3453 let buffer = buffer_handle.read(cx);
3454 ranges_to_highlight.extend(
3455 multibuffer.push_excerpts_with_context_lines(
3456 buffer_handle.clone(),
3457 buffer
3458 .edited_ranges_for_transaction::<usize>(transaction)
3459 .collect(),
3460 1,
3461 cx,
3462 ),
3463 );
3464 }
3465 multibuffer.push_transaction(entries.iter().map(|(b, t)| (b, t)), cx);
3466 multibuffer
3467 })?;
3468
3469 workspace.update(&mut cx, |workspace, cx| {
3470 let project = workspace.project().clone();
3471 let editor =
3472 cx.new_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
3473 workspace.add_item(Box::new(editor.clone()), cx);
3474 editor.update(cx, |editor, cx| {
3475 editor.highlight_background::<Self>(
3476 ranges_to_highlight,
3477 |theme| theme.editor_highlighted_line_background,
3478 cx,
3479 );
3480 });
3481 })?;
3482
3483 Ok(())
3484 }
3485
3486 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
3487 let project = self.project.clone()?;
3488 let buffer = self.buffer.read(cx);
3489 let newest_selection = self.selections.newest_anchor().clone();
3490 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
3491 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
3492 if start_buffer != end_buffer {
3493 return None;
3494 }
3495
3496 self.code_actions_task = Some(cx.spawn(|this, mut cx| async move {
3497 cx.background_executor()
3498 .timer(CODE_ACTIONS_DEBOUNCE_TIMEOUT)
3499 .await;
3500
3501 let actions = if let Ok(code_actions) = project.update(&mut cx, |project, cx| {
3502 project.code_actions(&start_buffer, start..end, cx)
3503 }) {
3504 code_actions.await.log_err()
3505 } else {
3506 None
3507 };
3508
3509 this.update(&mut cx, |this, cx| {
3510 this.available_code_actions = actions.and_then(|actions| {
3511 if actions.is_empty() {
3512 None
3513 } else {
3514 Some((start_buffer, actions.into()))
3515 }
3516 });
3517 cx.notify();
3518 })
3519 .log_err();
3520 }));
3521 None
3522 }
3523
3524 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
3525 if self.pending_rename.is_some() {
3526 return None;
3527 }
3528
3529 let project = self.project.clone()?;
3530 let buffer = self.buffer.read(cx);
3531 let newest_selection = self.selections.newest_anchor().clone();
3532 let cursor_position = newest_selection.head();
3533 let (cursor_buffer, cursor_buffer_position) =
3534 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
3535 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
3536 if cursor_buffer != tail_buffer {
3537 return None;
3538 }
3539
3540 self.document_highlights_task = Some(cx.spawn(|this, mut cx| async move {
3541 cx.background_executor()
3542 .timer(DOCUMENT_HIGHLIGHTS_DEBOUNCE_TIMEOUT)
3543 .await;
3544
3545 let highlights = if let Some(highlights) = project
3546 .update(&mut cx, |project, cx| {
3547 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
3548 })
3549 .log_err()
3550 {
3551 highlights.await.log_err()
3552 } else {
3553 None
3554 };
3555
3556 if let Some(highlights) = highlights {
3557 this.update(&mut cx, |this, cx| {
3558 if this.pending_rename.is_some() {
3559 return;
3560 }
3561
3562 let buffer_id = cursor_position.buffer_id;
3563 let buffer = this.buffer.read(cx);
3564 if !buffer
3565 .text_anchor_for_position(cursor_position, cx)
3566 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
3567 {
3568 return;
3569 }
3570
3571 let cursor_buffer_snapshot = cursor_buffer.read(cx);
3572 let mut write_ranges = Vec::new();
3573 let mut read_ranges = Vec::new();
3574 for highlight in highlights {
3575 for (excerpt_id, excerpt_range) in
3576 buffer.excerpts_for_buffer(&cursor_buffer, cx)
3577 {
3578 let start = highlight
3579 .range
3580 .start
3581 .max(&excerpt_range.context.start, cursor_buffer_snapshot);
3582 let end = highlight
3583 .range
3584 .end
3585 .min(&excerpt_range.context.end, cursor_buffer_snapshot);
3586 if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
3587 continue;
3588 }
3589
3590 let range = Anchor {
3591 buffer_id,
3592 excerpt_id: excerpt_id.clone(),
3593 text_anchor: start,
3594 }..Anchor {
3595 buffer_id,
3596 excerpt_id,
3597 text_anchor: end,
3598 };
3599 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
3600 write_ranges.push(range);
3601 } else {
3602 read_ranges.push(range);
3603 }
3604 }
3605 }
3606
3607 this.highlight_background::<DocumentHighlightRead>(
3608 read_ranges,
3609 |theme| theme.editor_document_highlight_read_background,
3610 cx,
3611 );
3612 this.highlight_background::<DocumentHighlightWrite>(
3613 write_ranges,
3614 |theme| theme.editor_document_highlight_write_background,
3615 cx,
3616 );
3617 cx.notify();
3618 })
3619 .log_err();
3620 }
3621 }));
3622 None
3623 }
3624
3625 fn refresh_copilot_suggestions(
3626 &mut self,
3627 debounce: bool,
3628 cx: &mut ViewContext<Self>,
3629 ) -> Option<()> {
3630 let copilot = Copilot::global(cx)?;
3631 if !self.show_copilot_suggestions || !copilot.read(cx).status().is_authorized() {
3632 self.clear_copilot_suggestions(cx);
3633 return None;
3634 }
3635 self.update_visible_copilot_suggestion(cx);
3636
3637 let snapshot = self.buffer.read(cx).snapshot(cx);
3638 let cursor = self.selections.newest_anchor().head();
3639 if !self.is_copilot_enabled_at(cursor, &snapshot, cx) {
3640 self.clear_copilot_suggestions(cx);
3641 return None;
3642 }
3643
3644 let (buffer, buffer_position) =
3645 self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
3646 self.copilot_state.pending_refresh = cx.spawn(|this, mut cx| async move {
3647 if debounce {
3648 cx.background_executor()
3649 .timer(COPILOT_DEBOUNCE_TIMEOUT)
3650 .await;
3651 }
3652
3653 let completions = copilot
3654 .update(&mut cx, |copilot, cx| {
3655 copilot.completions(&buffer, buffer_position, cx)
3656 })
3657 .log_err()
3658 .unwrap_or(Task::ready(Ok(Vec::new())))
3659 .await
3660 .log_err()
3661 .into_iter()
3662 .flatten()
3663 .collect_vec();
3664
3665 this.update(&mut cx, |this, cx| {
3666 if !completions.is_empty() {
3667 this.copilot_state.cycled = false;
3668 this.copilot_state.pending_cycling_refresh = Task::ready(None);
3669 this.copilot_state.completions.clear();
3670 this.copilot_state.active_completion_index = 0;
3671 this.copilot_state.excerpt_id = Some(cursor.excerpt_id);
3672 for completion in completions {
3673 this.copilot_state.push_completion(completion);
3674 }
3675 this.update_visible_copilot_suggestion(cx);
3676 }
3677 })
3678 .log_err()?;
3679 Some(())
3680 });
3681
3682 Some(())
3683 }
3684
3685 fn cycle_copilot_suggestions(
3686 &mut self,
3687 direction: Direction,
3688 cx: &mut ViewContext<Self>,
3689 ) -> Option<()> {
3690 let copilot = Copilot::global(cx)?;
3691 if !self.show_copilot_suggestions || !copilot.read(cx).status().is_authorized() {
3692 return None;
3693 }
3694
3695 if self.copilot_state.cycled {
3696 self.copilot_state.cycle_completions(direction);
3697 self.update_visible_copilot_suggestion(cx);
3698 } else {
3699 let cursor = self.selections.newest_anchor().head();
3700 let (buffer, buffer_position) =
3701 self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
3702 self.copilot_state.pending_cycling_refresh = cx.spawn(|this, mut cx| async move {
3703 let completions = copilot
3704 .update(&mut cx, |copilot, cx| {
3705 copilot.completions_cycling(&buffer, buffer_position, cx)
3706 })
3707 .log_err()?
3708 .await;
3709
3710 this.update(&mut cx, |this, cx| {
3711 this.copilot_state.cycled = true;
3712 for completion in completions.log_err().into_iter().flatten() {
3713 this.copilot_state.push_completion(completion);
3714 }
3715 this.copilot_state.cycle_completions(direction);
3716 this.update_visible_copilot_suggestion(cx);
3717 })
3718 .log_err()?;
3719
3720 Some(())
3721 });
3722 }
3723
3724 Some(())
3725 }
3726
3727 fn copilot_suggest(&mut self, _: &copilot::Suggest, cx: &mut ViewContext<Self>) {
3728 if !self.has_active_copilot_suggestion(cx) {
3729 self.refresh_copilot_suggestions(false, cx);
3730 return;
3731 }
3732
3733 self.update_visible_copilot_suggestion(cx);
3734 }
3735
3736 pub fn display_cursor_names(&mut self, _: &DisplayCursorNames, cx: &mut ViewContext<Self>) {
3737 self.show_cursor_names(cx);
3738 }
3739
3740 fn show_cursor_names(&mut self, cx: &mut ViewContext<Self>) {
3741 self.show_cursor_names = true;
3742 cx.notify();
3743 cx.spawn(|this, mut cx| async move {
3744 cx.background_executor().timer(Duration::from_secs(3)).await;
3745 this.update(&mut cx, |this, cx| {
3746 this.show_cursor_names = false;
3747 cx.notify()
3748 })
3749 .ok()
3750 })
3751 .detach();
3752 }
3753
3754 fn next_copilot_suggestion(&mut self, _: &copilot::NextSuggestion, cx: &mut ViewContext<Self>) {
3755 if self.has_active_copilot_suggestion(cx) {
3756 self.cycle_copilot_suggestions(Direction::Next, cx);
3757 } else {
3758 let is_copilot_disabled = self.refresh_copilot_suggestions(false, cx).is_none();
3759 if is_copilot_disabled {
3760 cx.propagate();
3761 }
3762 }
3763 }
3764
3765 fn previous_copilot_suggestion(
3766 &mut self,
3767 _: &copilot::PreviousSuggestion,
3768 cx: &mut ViewContext<Self>,
3769 ) {
3770 if self.has_active_copilot_suggestion(cx) {
3771 self.cycle_copilot_suggestions(Direction::Prev, cx);
3772 } else {
3773 let is_copilot_disabled = self.refresh_copilot_suggestions(false, cx).is_none();
3774 if is_copilot_disabled {
3775 cx.propagate();
3776 }
3777 }
3778 }
3779
3780 fn accept_copilot_suggestion(&mut self, cx: &mut ViewContext<Self>) -> bool {
3781 if let Some(suggestion) = self.take_active_copilot_suggestion(cx) {
3782 if let Some((copilot, completion)) =
3783 Copilot::global(cx).zip(self.copilot_state.active_completion())
3784 {
3785 copilot
3786 .update(cx, |copilot, cx| copilot.accept_completion(completion, cx))
3787 .detach_and_log_err(cx);
3788
3789 self.report_copilot_event(Some(completion.uuid.clone()), true, cx)
3790 }
3791 cx.emit(EditorEvent::InputHandled {
3792 utf16_range_to_replace: None,
3793 text: suggestion.text.to_string().into(),
3794 });
3795 self.insert_with_autoindent_mode(&suggestion.text.to_string(), None, cx);
3796 cx.notify();
3797 true
3798 } else {
3799 false
3800 }
3801 }
3802
3803 fn discard_copilot_suggestion(&mut self, cx: &mut ViewContext<Self>) -> bool {
3804 if let Some(suggestion) = self.take_active_copilot_suggestion(cx) {
3805 if let Some(copilot) = Copilot::global(cx) {
3806 copilot
3807 .update(cx, |copilot, cx| {
3808 copilot.discard_completions(&self.copilot_state.completions, cx)
3809 })
3810 .detach_and_log_err(cx);
3811
3812 self.report_copilot_event(None, false, cx)
3813 }
3814
3815 self.display_map.update(cx, |map, cx| {
3816 map.splice_inlays(vec![suggestion.id], Vec::new(), cx)
3817 });
3818 cx.notify();
3819 true
3820 } else {
3821 false
3822 }
3823 }
3824
3825 fn is_copilot_enabled_at(
3826 &self,
3827 location: Anchor,
3828 snapshot: &MultiBufferSnapshot,
3829 cx: &mut ViewContext<Self>,
3830 ) -> bool {
3831 let file = snapshot.file_at(location);
3832 let language = snapshot.language_at(location);
3833 let settings = all_language_settings(file, cx);
3834 self.show_copilot_suggestions
3835 && settings.copilot_enabled(language, file.map(|f| f.path().as_ref()))
3836 }
3837
3838 fn has_active_copilot_suggestion(&self, cx: &AppContext) -> bool {
3839 if let Some(suggestion) = self.copilot_state.suggestion.as_ref() {
3840 let buffer = self.buffer.read(cx).read(cx);
3841 suggestion.position.is_valid(&buffer)
3842 } else {
3843 false
3844 }
3845 }
3846
3847 fn take_active_copilot_suggestion(&mut self, cx: &mut ViewContext<Self>) -> Option<Inlay> {
3848 let suggestion = self.copilot_state.suggestion.take()?;
3849 self.display_map.update(cx, |map, cx| {
3850 map.splice_inlays(vec![suggestion.id], Default::default(), cx);
3851 });
3852 let buffer = self.buffer.read(cx).read(cx);
3853
3854 if suggestion.position.is_valid(&buffer) {
3855 Some(suggestion)
3856 } else {
3857 None
3858 }
3859 }
3860
3861 fn update_visible_copilot_suggestion(&mut self, cx: &mut ViewContext<Self>) {
3862 let snapshot = self.buffer.read(cx).snapshot(cx);
3863 let selection = self.selections.newest_anchor();
3864 let cursor = selection.head();
3865
3866 if self.context_menu.read().is_some()
3867 || !self.completion_tasks.is_empty()
3868 || selection.start != selection.end
3869 {
3870 self.discard_copilot_suggestion(cx);
3871 } else if let Some(text) = self
3872 .copilot_state
3873 .text_for_active_completion(cursor, &snapshot)
3874 {
3875 let text = Rope::from(text);
3876 let mut to_remove = Vec::new();
3877 if let Some(suggestion) = self.copilot_state.suggestion.take() {
3878 to_remove.push(suggestion.id);
3879 }
3880
3881 let suggestion_inlay =
3882 Inlay::suggestion(post_inc(&mut self.next_inlay_id), cursor, text);
3883 self.copilot_state.suggestion = Some(suggestion_inlay.clone());
3884 self.display_map.update(cx, move |map, cx| {
3885 map.splice_inlays(to_remove, vec![suggestion_inlay], cx)
3886 });
3887 cx.notify();
3888 } else {
3889 self.discard_copilot_suggestion(cx);
3890 }
3891 }
3892
3893 fn clear_copilot_suggestions(&mut self, cx: &mut ViewContext<Self>) {
3894 self.copilot_state = Default::default();
3895 self.discard_copilot_suggestion(cx);
3896 }
3897
3898 pub fn render_code_actions_indicator(
3899 &self,
3900 _style: &EditorStyle,
3901 is_active: bool,
3902 cx: &mut ViewContext<Self>,
3903 ) -> Option<IconButton> {
3904 if self.available_code_actions.is_some() {
3905 Some(
3906 IconButton::new("code_actions_indicator", ui::IconName::Bolt)
3907 .icon_size(IconSize::Small)
3908 .icon_color(Color::Muted)
3909 .selected(is_active)
3910 .on_click(cx.listener(|editor, _e, cx| {
3911 editor.toggle_code_actions(
3912 &ToggleCodeActions {
3913 deployed_from_indicator: true,
3914 },
3915 cx,
3916 );
3917 })),
3918 )
3919 } else {
3920 None
3921 }
3922 }
3923
3924 pub fn render_fold_indicators(
3925 &self,
3926 fold_data: Vec<Option<(FoldStatus, u32, bool)>>,
3927 _style: &EditorStyle,
3928 gutter_hovered: bool,
3929 _line_height: Pixels,
3930 _gutter_margin: Pixels,
3931 editor_view: View<Editor>,
3932 ) -> Vec<Option<IconButton>> {
3933 fold_data
3934 .iter()
3935 .enumerate()
3936 .map(|(ix, fold_data)| {
3937 fold_data
3938 .map(|(fold_status, buffer_row, active)| {
3939 (active || gutter_hovered || fold_status == FoldStatus::Folded).then(|| {
3940 IconButton::new(ix as usize, ui::IconName::ChevronDown)
3941 .on_click({
3942 let view = editor_view.clone();
3943 move |_e, cx| {
3944 view.update(cx, |editor, cx| match fold_status {
3945 FoldStatus::Folded => {
3946 editor.unfold_at(&UnfoldAt { buffer_row }, cx);
3947 }
3948 FoldStatus::Foldable => {
3949 editor.fold_at(&FoldAt { buffer_row }, cx);
3950 }
3951 })
3952 }
3953 })
3954 .icon_color(ui::Color::Muted)
3955 .icon_size(ui::IconSize::Small)
3956 .selected(fold_status == FoldStatus::Folded)
3957 .selected_icon(ui::IconName::ChevronRight)
3958 .size(ui::ButtonSize::None)
3959 })
3960 })
3961 .flatten()
3962 })
3963 .collect()
3964 }
3965
3966 pub fn context_menu_visible(&self) -> bool {
3967 self.context_menu
3968 .read()
3969 .as_ref()
3970 .map_or(false, |menu| menu.visible())
3971 }
3972
3973 pub fn render_context_menu(
3974 &self,
3975 cursor_position: DisplayPoint,
3976 style: &EditorStyle,
3977 max_height: Pixels,
3978 cx: &mut ViewContext<Editor>,
3979 ) -> Option<(DisplayPoint, AnyElement)> {
3980 self.context_menu.read().as_ref().map(|menu| {
3981 menu.render(
3982 cursor_position,
3983 style,
3984 max_height,
3985 self.workspace.as_ref().map(|(w, _)| w.clone()),
3986 cx,
3987 )
3988 })
3989 }
3990
3991 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
3992 cx.notify();
3993 self.completion_tasks.clear();
3994 let context_menu = self.context_menu.write().take();
3995 if context_menu.is_some() {
3996 self.update_visible_copilot_suggestion(cx);
3997 }
3998 context_menu
3999 }
4000
4001 pub fn insert_snippet(
4002 &mut self,
4003 insertion_ranges: &[Range<usize>],
4004 snippet: Snippet,
4005 cx: &mut ViewContext<Self>,
4006 ) -> Result<()> {
4007 let tabstops = self.buffer.update(cx, |buffer, cx| {
4008 let snippet_text: Arc<str> = snippet.text.clone().into();
4009 buffer.edit(
4010 insertion_ranges
4011 .iter()
4012 .cloned()
4013 .map(|range| (range, snippet_text.clone())),
4014 Some(AutoindentMode::EachLine),
4015 cx,
4016 );
4017
4018 let snapshot = &*buffer.read(cx);
4019 let snippet = &snippet;
4020 snippet
4021 .tabstops
4022 .iter()
4023 .map(|tabstop| {
4024 let mut tabstop_ranges = tabstop
4025 .iter()
4026 .flat_map(|tabstop_range| {
4027 let mut delta = 0_isize;
4028 insertion_ranges.iter().map(move |insertion_range| {
4029 let insertion_start = insertion_range.start as isize + delta;
4030 delta +=
4031 snippet.text.len() as isize - insertion_range.len() as isize;
4032
4033 let start = snapshot.anchor_before(
4034 (insertion_start + tabstop_range.start) as usize,
4035 );
4036 let end = snapshot
4037 .anchor_after((insertion_start + tabstop_range.end) as usize);
4038 start..end
4039 })
4040 })
4041 .collect::<Vec<_>>();
4042 tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
4043 tabstop_ranges
4044 })
4045 .collect::<Vec<_>>()
4046 });
4047
4048 if let Some(tabstop) = tabstops.first() {
4049 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
4050 s.select_ranges(tabstop.iter().cloned());
4051 });
4052 self.snippet_stack.push(SnippetState {
4053 active_index: 0,
4054 ranges: tabstops,
4055 });
4056 }
4057
4058 Ok(())
4059 }
4060
4061 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
4062 self.move_to_snippet_tabstop(Bias::Right, cx)
4063 }
4064
4065 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
4066 self.move_to_snippet_tabstop(Bias::Left, cx)
4067 }
4068
4069 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
4070 if let Some(mut snippet) = self.snippet_stack.pop() {
4071 match bias {
4072 Bias::Left => {
4073 if snippet.active_index > 0 {
4074 snippet.active_index -= 1;
4075 } else {
4076 self.snippet_stack.push(snippet);
4077 return false;
4078 }
4079 }
4080 Bias::Right => {
4081 if snippet.active_index + 1 < snippet.ranges.len() {
4082 snippet.active_index += 1;
4083 } else {
4084 self.snippet_stack.push(snippet);
4085 return false;
4086 }
4087 }
4088 }
4089 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
4090 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
4091 s.select_anchor_ranges(current_ranges.iter().cloned())
4092 });
4093 // If snippet state is not at the last tabstop, push it back on the stack
4094 if snippet.active_index + 1 < snippet.ranges.len() {
4095 self.snippet_stack.push(snippet);
4096 }
4097 return true;
4098 }
4099 }
4100
4101 false
4102 }
4103
4104 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
4105 self.transact(cx, |this, cx| {
4106 this.select_all(&SelectAll, cx);
4107 this.insert("", cx);
4108 });
4109 }
4110
4111 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
4112 self.transact(cx, |this, cx| {
4113 this.select_autoclose_pair(cx);
4114 let mut selections = this.selections.all::<Point>(cx);
4115 if !this.selections.line_mode {
4116 let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
4117 for selection in &mut selections {
4118 if selection.is_empty() {
4119 let old_head = selection.head();
4120 let mut new_head =
4121 movement::left(&display_map, old_head.to_display_point(&display_map))
4122 .to_point(&display_map);
4123 if let Some((buffer, line_buffer_range)) = display_map
4124 .buffer_snapshot
4125 .buffer_line_for_row(old_head.row)
4126 {
4127 let indent_size =
4128 buffer.indent_size_for_line(line_buffer_range.start.row);
4129 let indent_len = match indent_size.kind {
4130 IndentKind::Space => {
4131 buffer.settings_at(line_buffer_range.start, cx).tab_size
4132 }
4133 IndentKind::Tab => NonZeroU32::new(1).unwrap(),
4134 };
4135 if old_head.column <= indent_size.len && old_head.column > 0 {
4136 let indent_len = indent_len.get();
4137 new_head = cmp::min(
4138 new_head,
4139 Point::new(
4140 old_head.row,
4141 ((old_head.column - 1) / indent_len) * indent_len,
4142 ),
4143 );
4144 }
4145 }
4146
4147 selection.set_head(new_head, SelectionGoal::None);
4148 }
4149 }
4150 }
4151
4152 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(selections));
4153 this.insert("", cx);
4154 this.refresh_copilot_suggestions(true, cx);
4155 });
4156 }
4157
4158 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
4159 self.transact(cx, |this, cx| {
4160 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
4161 let line_mode = s.line_mode;
4162 s.move_with(|map, selection| {
4163 if selection.is_empty() && !line_mode {
4164 let cursor = movement::right(map, selection.head());
4165 selection.end = cursor;
4166 selection.reversed = true;
4167 selection.goal = SelectionGoal::None;
4168 }
4169 })
4170 });
4171 this.insert("", cx);
4172 this.refresh_copilot_suggestions(true, cx);
4173 });
4174 }
4175
4176 pub fn tab_prev(&mut self, _: &TabPrev, cx: &mut ViewContext<Self>) {
4177 if self.move_to_prev_snippet_tabstop(cx) {
4178 return;
4179 }
4180
4181 self.outdent(&Outdent, cx);
4182 }
4183
4184 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
4185 if self.move_to_next_snippet_tabstop(cx) || self.read_only(cx) {
4186 return;
4187 }
4188
4189 let mut selections = self.selections.all_adjusted(cx);
4190 let buffer = self.buffer.read(cx);
4191 let snapshot = buffer.snapshot(cx);
4192 let rows_iter = selections.iter().map(|s| s.head().row);
4193 let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
4194
4195 let mut edits = Vec::new();
4196 let mut prev_edited_row = 0;
4197 let mut row_delta = 0;
4198 for selection in &mut selections {
4199 if selection.start.row != prev_edited_row {
4200 row_delta = 0;
4201 }
4202 prev_edited_row = selection.end.row;
4203
4204 // If the selection is non-empty, then increase the indentation of the selected lines.
4205 if !selection.is_empty() {
4206 row_delta =
4207 Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
4208 continue;
4209 }
4210
4211 // If the selection is empty and the cursor is in the leading whitespace before the
4212 // suggested indentation, then auto-indent the line.
4213 let cursor = selection.head();
4214 let current_indent = snapshot.indent_size_for_line(cursor.row);
4215 if let Some(suggested_indent) = suggested_indents.get(&cursor.row).copied() {
4216 if cursor.column < suggested_indent.len
4217 && cursor.column <= current_indent.len
4218 && current_indent.len <= suggested_indent.len
4219 {
4220 selection.start = Point::new(cursor.row, suggested_indent.len);
4221 selection.end = selection.start;
4222 if row_delta == 0 {
4223 edits.extend(Buffer::edit_for_indent_size_adjustment(
4224 cursor.row,
4225 current_indent,
4226 suggested_indent,
4227 ));
4228 row_delta = suggested_indent.len - current_indent.len;
4229 }
4230 continue;
4231 }
4232 }
4233
4234 // Accept copilot suggestion if there is only one selection and the cursor is not
4235 // in the leading whitespace.
4236 if self.selections.count() == 1
4237 && cursor.column >= current_indent.len
4238 && self.has_active_copilot_suggestion(cx)
4239 {
4240 self.accept_copilot_suggestion(cx);
4241 return;
4242 }
4243
4244 // Otherwise, insert a hard or soft tab.
4245 let settings = buffer.settings_at(cursor, cx);
4246 let tab_size = if settings.hard_tabs {
4247 IndentSize::tab()
4248 } else {
4249 let tab_size = settings.tab_size.get();
4250 let char_column = snapshot
4251 .text_for_range(Point::new(cursor.row, 0)..cursor)
4252 .flat_map(str::chars)
4253 .count()
4254 + row_delta as usize;
4255 let chars_to_next_tab_stop = tab_size - (char_column as u32 % tab_size);
4256 IndentSize::spaces(chars_to_next_tab_stop)
4257 };
4258 selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
4259 selection.end = selection.start;
4260 edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
4261 row_delta += tab_size.len;
4262 }
4263
4264 self.transact(cx, |this, cx| {
4265 this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
4266 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(selections));
4267 this.refresh_copilot_suggestions(true, cx);
4268 });
4269 }
4270
4271 pub fn indent(&mut self, _: &Indent, cx: &mut ViewContext<Self>) {
4272 let mut selections = self.selections.all::<Point>(cx);
4273 let mut prev_edited_row = 0;
4274 let mut row_delta = 0;
4275 let mut edits = Vec::new();
4276 let buffer = self.buffer.read(cx);
4277 let snapshot = buffer.snapshot(cx);
4278 for selection in &mut selections {
4279 if selection.start.row != prev_edited_row {
4280 row_delta = 0;
4281 }
4282 prev_edited_row = selection.end.row;
4283
4284 row_delta =
4285 Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
4286 }
4287
4288 self.transact(cx, |this, cx| {
4289 this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
4290 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(selections));
4291 });
4292 }
4293
4294 fn indent_selection(
4295 buffer: &MultiBuffer,
4296 snapshot: &MultiBufferSnapshot,
4297 selection: &mut Selection<Point>,
4298 edits: &mut Vec<(Range<Point>, String)>,
4299 delta_for_start_row: u32,
4300 cx: &AppContext,
4301 ) -> u32 {
4302 let settings = buffer.settings_at(selection.start, cx);
4303 let tab_size = settings.tab_size.get();
4304 let indent_kind = if settings.hard_tabs {
4305 IndentKind::Tab
4306 } else {
4307 IndentKind::Space
4308 };
4309 let mut start_row = selection.start.row;
4310 let mut end_row = selection.end.row + 1;
4311
4312 // If a selection ends at the beginning of a line, don't indent
4313 // that last line.
4314 if selection.end.column == 0 {
4315 end_row -= 1;
4316 }
4317
4318 // Avoid re-indenting a row that has already been indented by a
4319 // previous selection, but still update this selection's column
4320 // to reflect that indentation.
4321 if delta_for_start_row > 0 {
4322 start_row += 1;
4323 selection.start.column += delta_for_start_row;
4324 if selection.end.row == selection.start.row {
4325 selection.end.column += delta_for_start_row;
4326 }
4327 }
4328
4329 let mut delta_for_end_row = 0;
4330 for row in start_row..end_row {
4331 let current_indent = snapshot.indent_size_for_line(row);
4332 let indent_delta = match (current_indent.kind, indent_kind) {
4333 (IndentKind::Space, IndentKind::Space) => {
4334 let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
4335 IndentSize::spaces(columns_to_next_tab_stop)
4336 }
4337 (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
4338 (_, IndentKind::Tab) => IndentSize::tab(),
4339 };
4340
4341 let row_start = Point::new(row, 0);
4342 edits.push((
4343 row_start..row_start,
4344 indent_delta.chars().collect::<String>(),
4345 ));
4346
4347 // Update this selection's endpoints to reflect the indentation.
4348 if row == selection.start.row {
4349 selection.start.column += indent_delta.len;
4350 }
4351 if row == selection.end.row {
4352 selection.end.column += indent_delta.len;
4353 delta_for_end_row = indent_delta.len;
4354 }
4355 }
4356
4357 if selection.start.row == selection.end.row {
4358 delta_for_start_row + delta_for_end_row
4359 } else {
4360 delta_for_end_row
4361 }
4362 }
4363
4364 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
4365 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4366 let selections = self.selections.all::<Point>(cx);
4367 let mut deletion_ranges = Vec::new();
4368 let mut last_outdent = None;
4369 {
4370 let buffer = self.buffer.read(cx);
4371 let snapshot = buffer.snapshot(cx);
4372 for selection in &selections {
4373 let settings = buffer.settings_at(selection.start, cx);
4374 let tab_size = settings.tab_size.get();
4375 let mut rows = selection.spanned_rows(false, &display_map);
4376
4377 // Avoid re-outdenting a row that has already been outdented by a
4378 // previous selection.
4379 if let Some(last_row) = last_outdent {
4380 if last_row == rows.start {
4381 rows.start += 1;
4382 }
4383 }
4384
4385 for row in rows {
4386 let indent_size = snapshot.indent_size_for_line(row);
4387 if indent_size.len > 0 {
4388 let deletion_len = match indent_size.kind {
4389 IndentKind::Space => {
4390 let columns_to_prev_tab_stop = indent_size.len % tab_size;
4391 if columns_to_prev_tab_stop == 0 {
4392 tab_size
4393 } else {
4394 columns_to_prev_tab_stop
4395 }
4396 }
4397 IndentKind::Tab => 1,
4398 };
4399 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
4400 last_outdent = Some(row);
4401 }
4402 }
4403 }
4404 }
4405
4406 self.transact(cx, |this, cx| {
4407 this.buffer.update(cx, |buffer, cx| {
4408 let empty_str: Arc<str> = "".into();
4409 buffer.edit(
4410 deletion_ranges
4411 .into_iter()
4412 .map(|range| (range, empty_str.clone())),
4413 None,
4414 cx,
4415 );
4416 });
4417 let selections = this.selections.all::<usize>(cx);
4418 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(selections));
4419 });
4420 }
4421
4422 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
4423 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4424 let selections = self.selections.all::<Point>(cx);
4425
4426 let mut new_cursors = Vec::new();
4427 let mut edit_ranges = Vec::new();
4428 let mut selections = selections.iter().peekable();
4429 while let Some(selection) = selections.next() {
4430 let mut rows = selection.spanned_rows(false, &display_map);
4431 let goal_display_column = selection.head().to_display_point(&display_map).column();
4432
4433 // Accumulate contiguous regions of rows that we want to delete.
4434 while let Some(next_selection) = selections.peek() {
4435 let next_rows = next_selection.spanned_rows(false, &display_map);
4436 if next_rows.start <= rows.end {
4437 rows.end = next_rows.end;
4438 selections.next().unwrap();
4439 } else {
4440 break;
4441 }
4442 }
4443
4444 let buffer = &display_map.buffer_snapshot;
4445 let mut edit_start = Point::new(rows.start, 0).to_offset(buffer);
4446 let edit_end;
4447 let cursor_buffer_row;
4448 if buffer.max_point().row >= rows.end {
4449 // If there's a line after the range, delete the \n from the end of the row range
4450 // and position the cursor on the next line.
4451 edit_end = Point::new(rows.end, 0).to_offset(buffer);
4452 cursor_buffer_row = rows.end;
4453 } else {
4454 // If there isn't a line after the range, delete the \n from the line before the
4455 // start of the row range and position the cursor there.
4456 edit_start = edit_start.saturating_sub(1);
4457 edit_end = buffer.len();
4458 cursor_buffer_row = rows.start.saturating_sub(1);
4459 }
4460
4461 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
4462 *cursor.column_mut() =
4463 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
4464
4465 new_cursors.push((
4466 selection.id,
4467 buffer.anchor_after(cursor.to_point(&display_map)),
4468 ));
4469 edit_ranges.push(edit_start..edit_end);
4470 }
4471
4472 self.transact(cx, |this, cx| {
4473 let buffer = this.buffer.update(cx, |buffer, cx| {
4474 let empty_str: Arc<str> = "".into();
4475 buffer.edit(
4476 edit_ranges
4477 .into_iter()
4478 .map(|range| (range, empty_str.clone())),
4479 None,
4480 cx,
4481 );
4482 buffer.snapshot(cx)
4483 });
4484 let new_selections = new_cursors
4485 .into_iter()
4486 .map(|(id, cursor)| {
4487 let cursor = cursor.to_point(&buffer);
4488 Selection {
4489 id,
4490 start: cursor,
4491 end: cursor,
4492 reversed: false,
4493 goal: SelectionGoal::None,
4494 }
4495 })
4496 .collect();
4497
4498 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
4499 s.select(new_selections);
4500 });
4501 });
4502 }
4503
4504 pub fn join_lines(&mut self, _: &JoinLines, cx: &mut ViewContext<Self>) {
4505 let mut row_ranges = Vec::<Range<u32>>::new();
4506 for selection in self.selections.all::<Point>(cx) {
4507 let start = selection.start.row;
4508 let end = if selection.start.row == selection.end.row {
4509 selection.start.row + 1
4510 } else {
4511 selection.end.row
4512 };
4513
4514 if let Some(last_row_range) = row_ranges.last_mut() {
4515 if start <= last_row_range.end {
4516 last_row_range.end = end;
4517 continue;
4518 }
4519 }
4520 row_ranges.push(start..end);
4521 }
4522
4523 let snapshot = self.buffer.read(cx).snapshot(cx);
4524 let mut cursor_positions = Vec::new();
4525 for row_range in &row_ranges {
4526 let anchor = snapshot.anchor_before(Point::new(
4527 row_range.end - 1,
4528 snapshot.line_len(row_range.end - 1),
4529 ));
4530 cursor_positions.push(anchor.clone()..anchor);
4531 }
4532
4533 self.transact(cx, |this, cx| {
4534 for row_range in row_ranges.into_iter().rev() {
4535 for row in row_range.rev() {
4536 let end_of_line = Point::new(row, snapshot.line_len(row));
4537 let indent = snapshot.indent_size_for_line(row + 1);
4538 let start_of_next_line = Point::new(row + 1, indent.len);
4539
4540 let replace = if snapshot.line_len(row + 1) > indent.len {
4541 " "
4542 } else {
4543 ""
4544 };
4545
4546 this.buffer.update(cx, |buffer, cx| {
4547 buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
4548 });
4549 }
4550 }
4551
4552 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
4553 s.select_anchor_ranges(cursor_positions)
4554 });
4555 });
4556 }
4557
4558 pub fn sort_lines_case_sensitive(
4559 &mut self,
4560 _: &SortLinesCaseSensitive,
4561 cx: &mut ViewContext<Self>,
4562 ) {
4563 self.manipulate_lines(cx, |lines| lines.sort())
4564 }
4565
4566 pub fn sort_lines_case_insensitive(
4567 &mut self,
4568 _: &SortLinesCaseInsensitive,
4569 cx: &mut ViewContext<Self>,
4570 ) {
4571 self.manipulate_lines(cx, |lines| lines.sort_by_key(|line| line.to_lowercase()))
4572 }
4573
4574 pub fn reverse_lines(&mut self, _: &ReverseLines, cx: &mut ViewContext<Self>) {
4575 self.manipulate_lines(cx, |lines| lines.reverse())
4576 }
4577
4578 pub fn shuffle_lines(&mut self, _: &ShuffleLines, cx: &mut ViewContext<Self>) {
4579 self.manipulate_lines(cx, |lines| lines.shuffle(&mut thread_rng()))
4580 }
4581
4582 fn manipulate_lines<Fn>(&mut self, cx: &mut ViewContext<Self>, mut callback: Fn)
4583 where
4584 Fn: FnMut(&mut [&str]),
4585 {
4586 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4587 let buffer = self.buffer.read(cx).snapshot(cx);
4588
4589 let mut edits = Vec::new();
4590
4591 let selections = self.selections.all::<Point>(cx);
4592 let mut selections = selections.iter().peekable();
4593 let mut contiguous_row_selections = Vec::new();
4594 let mut new_selections = Vec::new();
4595
4596 while let Some(selection) = selections.next() {
4597 let (start_row, end_row) = consume_contiguous_rows(
4598 &mut contiguous_row_selections,
4599 selection,
4600 &display_map,
4601 &mut selections,
4602 );
4603
4604 let start_point = Point::new(start_row, 0);
4605 let end_point = Point::new(end_row - 1, buffer.line_len(end_row - 1));
4606 let text = buffer
4607 .text_for_range(start_point..end_point)
4608 .collect::<String>();
4609 let mut lines = text.split("\n").collect_vec();
4610
4611 let lines_len = lines.len();
4612 callback(&mut lines);
4613
4614 // This is a current limitation with selections.
4615 // If we wanted to support removing or adding lines, we'd need to fix the logic associated with selections.
4616 debug_assert!(
4617 lines.len() == lines_len,
4618 "callback should not change the number of lines"
4619 );
4620
4621 edits.push((start_point..end_point, lines.join("\n")));
4622 let start_anchor = buffer.anchor_after(start_point);
4623 let end_anchor = buffer.anchor_before(end_point);
4624
4625 // Make selection and push
4626 new_selections.push(Selection {
4627 id: selection.id,
4628 start: start_anchor.to_offset(&buffer),
4629 end: end_anchor.to_offset(&buffer),
4630 goal: SelectionGoal::None,
4631 reversed: selection.reversed,
4632 });
4633 }
4634
4635 self.transact(cx, |this, cx| {
4636 this.buffer.update(cx, |buffer, cx| {
4637 buffer.edit(edits, None, cx);
4638 });
4639
4640 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
4641 s.select(new_selections);
4642 });
4643
4644 this.request_autoscroll(Autoscroll::fit(), cx);
4645 });
4646 }
4647
4648 pub fn convert_to_upper_case(&mut self, _: &ConvertToUpperCase, cx: &mut ViewContext<Self>) {
4649 self.manipulate_text(cx, |text| text.to_uppercase())
4650 }
4651
4652 pub fn convert_to_lower_case(&mut self, _: &ConvertToLowerCase, cx: &mut ViewContext<Self>) {
4653 self.manipulate_text(cx, |text| text.to_lowercase())
4654 }
4655
4656 pub fn convert_to_title_case(&mut self, _: &ConvertToTitleCase, cx: &mut ViewContext<Self>) {
4657 self.manipulate_text(cx, |text| {
4658 // Hack to get around the fact that to_case crate doesn't support '\n' as a word boundary
4659 // https://github.com/rutrum/convert-case/issues/16
4660 text.split("\n")
4661 .map(|line| line.to_case(Case::Title))
4662 .join("\n")
4663 })
4664 }
4665
4666 pub fn convert_to_snake_case(&mut self, _: &ConvertToSnakeCase, cx: &mut ViewContext<Self>) {
4667 self.manipulate_text(cx, |text| text.to_case(Case::Snake))
4668 }
4669
4670 pub fn convert_to_kebab_case(&mut self, _: &ConvertToKebabCase, cx: &mut ViewContext<Self>) {
4671 self.manipulate_text(cx, |text| text.to_case(Case::Kebab))
4672 }
4673
4674 pub fn convert_to_upper_camel_case(
4675 &mut self,
4676 _: &ConvertToUpperCamelCase,
4677 cx: &mut ViewContext<Self>,
4678 ) {
4679 self.manipulate_text(cx, |text| {
4680 // Hack to get around the fact that to_case crate doesn't support '\n' as a word boundary
4681 // https://github.com/rutrum/convert-case/issues/16
4682 text.split("\n")
4683 .map(|line| line.to_case(Case::UpperCamel))
4684 .join("\n")
4685 })
4686 }
4687
4688 pub fn convert_to_lower_camel_case(
4689 &mut self,
4690 _: &ConvertToLowerCamelCase,
4691 cx: &mut ViewContext<Self>,
4692 ) {
4693 self.manipulate_text(cx, |text| text.to_case(Case::Camel))
4694 }
4695
4696 fn manipulate_text<Fn>(&mut self, cx: &mut ViewContext<Self>, mut callback: Fn)
4697 where
4698 Fn: FnMut(&str) -> String,
4699 {
4700 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4701 let buffer = self.buffer.read(cx).snapshot(cx);
4702
4703 let mut new_selections = Vec::new();
4704 let mut edits = Vec::new();
4705 let mut selection_adjustment = 0i32;
4706
4707 for selection in self.selections.all::<usize>(cx) {
4708 let selection_is_empty = selection.is_empty();
4709
4710 let (start, end) = if selection_is_empty {
4711 let word_range = movement::surrounding_word(
4712 &display_map,
4713 selection.start.to_display_point(&display_map),
4714 );
4715 let start = word_range.start.to_offset(&display_map, Bias::Left);
4716 let end = word_range.end.to_offset(&display_map, Bias::Left);
4717 (start, end)
4718 } else {
4719 (selection.start, selection.end)
4720 };
4721
4722 let text = buffer.text_for_range(start..end).collect::<String>();
4723 let old_length = text.len() as i32;
4724 let text = callback(&text);
4725
4726 new_selections.push(Selection {
4727 start: (start as i32 - selection_adjustment) as usize,
4728 end: ((start + text.len()) as i32 - selection_adjustment) as usize,
4729 goal: SelectionGoal::None,
4730 ..selection
4731 });
4732
4733 selection_adjustment += old_length - text.len() as i32;
4734
4735 edits.push((start..end, text));
4736 }
4737
4738 self.transact(cx, |this, cx| {
4739 this.buffer.update(cx, |buffer, cx| {
4740 buffer.edit(edits, None, cx);
4741 });
4742
4743 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
4744 s.select(new_selections);
4745 });
4746
4747 this.request_autoscroll(Autoscroll::fit(), cx);
4748 });
4749 }
4750
4751 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
4752 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4753 let buffer = &display_map.buffer_snapshot;
4754 let selections = self.selections.all::<Point>(cx);
4755
4756 let mut edits = Vec::new();
4757 let mut selections_iter = selections.iter().peekable();
4758 while let Some(selection) = selections_iter.next() {
4759 // Avoid duplicating the same lines twice.
4760 let mut rows = selection.spanned_rows(false, &display_map);
4761
4762 while let Some(next_selection) = selections_iter.peek() {
4763 let next_rows = next_selection.spanned_rows(false, &display_map);
4764 if next_rows.start < rows.end {
4765 rows.end = next_rows.end;
4766 selections_iter.next().unwrap();
4767 } else {
4768 break;
4769 }
4770 }
4771
4772 // Copy the text from the selected row region and splice it at the start of the region.
4773 let start = Point::new(rows.start, 0);
4774 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
4775 let text = buffer
4776 .text_for_range(start..end)
4777 .chain(Some("\n"))
4778 .collect::<String>();
4779 edits.push((start..start, text));
4780 }
4781
4782 self.transact(cx, |this, cx| {
4783 this.buffer.update(cx, |buffer, cx| {
4784 buffer.edit(edits, None, cx);
4785 });
4786
4787 this.request_autoscroll(Autoscroll::fit(), cx);
4788 });
4789 }
4790
4791 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
4792 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4793 let buffer = self.buffer.read(cx).snapshot(cx);
4794
4795 let mut edits = Vec::new();
4796 let mut unfold_ranges = Vec::new();
4797 let mut refold_ranges = Vec::new();
4798
4799 let selections = self.selections.all::<Point>(cx);
4800 let mut selections = selections.iter().peekable();
4801 let mut contiguous_row_selections = Vec::new();
4802 let mut new_selections = Vec::new();
4803
4804 while let Some(selection) = selections.next() {
4805 // Find all the selections that span a contiguous row range
4806 let (start_row, end_row) = consume_contiguous_rows(
4807 &mut contiguous_row_selections,
4808 selection,
4809 &display_map,
4810 &mut selections,
4811 );
4812
4813 // Move the text spanned by the row range to be before the line preceding the row range
4814 if start_row > 0 {
4815 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
4816 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
4817 let insertion_point = display_map
4818 .prev_line_boundary(Point::new(start_row - 1, 0))
4819 .0;
4820
4821 // Don't move lines across excerpts
4822 if buffer
4823 .excerpt_boundaries_in_range((
4824 Bound::Excluded(insertion_point),
4825 Bound::Included(range_to_move.end),
4826 ))
4827 .next()
4828 .is_none()
4829 {
4830 let text = buffer
4831 .text_for_range(range_to_move.clone())
4832 .flat_map(|s| s.chars())
4833 .skip(1)
4834 .chain(['\n'])
4835 .collect::<String>();
4836
4837 edits.push((
4838 buffer.anchor_after(range_to_move.start)
4839 ..buffer.anchor_before(range_to_move.end),
4840 String::new(),
4841 ));
4842 let insertion_anchor = buffer.anchor_after(insertion_point);
4843 edits.push((insertion_anchor..insertion_anchor, text));
4844
4845 let row_delta = range_to_move.start.row - insertion_point.row + 1;
4846
4847 // Move selections up
4848 new_selections.extend(contiguous_row_selections.drain(..).map(
4849 |mut selection| {
4850 selection.start.row -= row_delta;
4851 selection.end.row -= row_delta;
4852 selection
4853 },
4854 ));
4855
4856 // Move folds up
4857 unfold_ranges.push(range_to_move.clone());
4858 for fold in display_map.folds_in_range(
4859 buffer.anchor_before(range_to_move.start)
4860 ..buffer.anchor_after(range_to_move.end),
4861 ) {
4862 let mut start = fold.range.start.to_point(&buffer);
4863 let mut end = fold.range.end.to_point(&buffer);
4864 start.row -= row_delta;
4865 end.row -= row_delta;
4866 refold_ranges.push(start..end);
4867 }
4868 }
4869 }
4870
4871 // If we didn't move line(s), preserve the existing selections
4872 new_selections.append(&mut contiguous_row_selections);
4873 }
4874
4875 self.transact(cx, |this, cx| {
4876 this.unfold_ranges(unfold_ranges, true, true, cx);
4877 this.buffer.update(cx, |buffer, cx| {
4878 for (range, text) in edits {
4879 buffer.edit([(range, text)], None, cx);
4880 }
4881 });
4882 this.fold_ranges(refold_ranges, true, cx);
4883 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
4884 s.select(new_selections);
4885 })
4886 });
4887 }
4888
4889 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
4890 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4891 let buffer = self.buffer.read(cx).snapshot(cx);
4892
4893 let mut edits = Vec::new();
4894 let mut unfold_ranges = Vec::new();
4895 let mut refold_ranges = Vec::new();
4896
4897 let selections = self.selections.all::<Point>(cx);
4898 let mut selections = selections.iter().peekable();
4899 let mut contiguous_row_selections = Vec::new();
4900 let mut new_selections = Vec::new();
4901
4902 while let Some(selection) = selections.next() {
4903 // Find all the selections that span a contiguous row range
4904 let (start_row, end_row) = consume_contiguous_rows(
4905 &mut contiguous_row_selections,
4906 selection,
4907 &display_map,
4908 &mut selections,
4909 );
4910
4911 // Move the text spanned by the row range to be after the last line of the row range
4912 if end_row <= buffer.max_point().row {
4913 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
4914 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
4915
4916 // Don't move lines across excerpt boundaries
4917 if buffer
4918 .excerpt_boundaries_in_range((
4919 Bound::Excluded(range_to_move.start),
4920 Bound::Included(insertion_point),
4921 ))
4922 .next()
4923 .is_none()
4924 {
4925 let mut text = String::from("\n");
4926 text.extend(buffer.text_for_range(range_to_move.clone()));
4927 text.pop(); // Drop trailing newline
4928 edits.push((
4929 buffer.anchor_after(range_to_move.start)
4930 ..buffer.anchor_before(range_to_move.end),
4931 String::new(),
4932 ));
4933 let insertion_anchor = buffer.anchor_after(insertion_point);
4934 edits.push((insertion_anchor..insertion_anchor, text));
4935
4936 let row_delta = insertion_point.row - range_to_move.end.row + 1;
4937
4938 // Move selections down
4939 new_selections.extend(contiguous_row_selections.drain(..).map(
4940 |mut selection| {
4941 selection.start.row += row_delta;
4942 selection.end.row += row_delta;
4943 selection
4944 },
4945 ));
4946
4947 // Move folds down
4948 unfold_ranges.push(range_to_move.clone());
4949 for fold in display_map.folds_in_range(
4950 buffer.anchor_before(range_to_move.start)
4951 ..buffer.anchor_after(range_to_move.end),
4952 ) {
4953 let mut start = fold.range.start.to_point(&buffer);
4954 let mut end = fold.range.end.to_point(&buffer);
4955 start.row += row_delta;
4956 end.row += row_delta;
4957 refold_ranges.push(start..end);
4958 }
4959 }
4960 }
4961
4962 // If we didn't move line(s), preserve the existing selections
4963 new_selections.append(&mut contiguous_row_selections);
4964 }
4965
4966 self.transact(cx, |this, cx| {
4967 this.unfold_ranges(unfold_ranges, true, true, cx);
4968 this.buffer.update(cx, |buffer, cx| {
4969 for (range, text) in edits {
4970 buffer.edit([(range, text)], None, cx);
4971 }
4972 });
4973 this.fold_ranges(refold_ranges, true, cx);
4974 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(new_selections));
4975 });
4976 }
4977
4978 pub fn transpose(&mut self, _: &Transpose, cx: &mut ViewContext<Self>) {
4979 let text_layout_details = &self.text_layout_details(cx);
4980 self.transact(cx, |this, cx| {
4981 let edits = this.change_selections(Some(Autoscroll::fit()), cx, |s| {
4982 let mut edits: Vec<(Range<usize>, String)> = Default::default();
4983 let line_mode = s.line_mode;
4984 s.move_with(|display_map, selection| {
4985 if !selection.is_empty() || line_mode {
4986 return;
4987 }
4988
4989 let mut head = selection.head();
4990 let mut transpose_offset = head.to_offset(display_map, Bias::Right);
4991 if head.column() == display_map.line_len(head.row()) {
4992 transpose_offset = display_map
4993 .buffer_snapshot
4994 .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
4995 }
4996
4997 if transpose_offset == 0 {
4998 return;
4999 }
5000
5001 *head.column_mut() += 1;
5002 head = display_map.clip_point(head, Bias::Right);
5003 let goal = SelectionGoal::HorizontalPosition(
5004 display_map
5005 .x_for_display_point(head, &text_layout_details)
5006 .into(),
5007 );
5008 selection.collapse_to(head, goal);
5009
5010 let transpose_start = display_map
5011 .buffer_snapshot
5012 .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
5013 if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
5014 let transpose_end = display_map
5015 .buffer_snapshot
5016 .clip_offset(transpose_offset + 1, Bias::Right);
5017 if let Some(ch) =
5018 display_map.buffer_snapshot.chars_at(transpose_start).next()
5019 {
5020 edits.push((transpose_start..transpose_offset, String::new()));
5021 edits.push((transpose_end..transpose_end, ch.to_string()));
5022 }
5023 }
5024 });
5025 edits
5026 });
5027 this.buffer
5028 .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
5029 let selections = this.selections.all::<usize>(cx);
5030 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
5031 s.select(selections);
5032 });
5033 });
5034 }
5035
5036 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
5037 let mut text = String::new();
5038 let buffer = self.buffer.read(cx).snapshot(cx);
5039 let mut selections = self.selections.all::<Point>(cx);
5040 let mut clipboard_selections = Vec::with_capacity(selections.len());
5041 {
5042 let max_point = buffer.max_point();
5043 let mut is_first = true;
5044 for selection in &mut selections {
5045 let is_entire_line = selection.is_empty() || self.selections.line_mode;
5046 if is_entire_line {
5047 selection.start = Point::new(selection.start.row, 0);
5048 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
5049 selection.goal = SelectionGoal::None;
5050 }
5051 if is_first {
5052 is_first = false;
5053 } else {
5054 text += "\n";
5055 }
5056 let mut len = 0;
5057 for chunk in buffer.text_for_range(selection.start..selection.end) {
5058 text.push_str(chunk);
5059 len += chunk.len();
5060 }
5061 clipboard_selections.push(ClipboardSelection {
5062 len,
5063 is_entire_line,
5064 first_line_indent: buffer.indent_size_for_line(selection.start.row).len,
5065 });
5066 }
5067 }
5068
5069 self.transact(cx, |this, cx| {
5070 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
5071 s.select(selections);
5072 });
5073 this.insert("", cx);
5074 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
5075 });
5076 }
5077
5078 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
5079 let selections = self.selections.all::<Point>(cx);
5080 let buffer = self.buffer.read(cx).read(cx);
5081 let mut text = String::new();
5082
5083 let mut clipboard_selections = Vec::with_capacity(selections.len());
5084 {
5085 let max_point = buffer.max_point();
5086 let mut is_first = true;
5087 for selection in selections.iter() {
5088 let mut start = selection.start;
5089 let mut end = selection.end;
5090 let is_entire_line = selection.is_empty() || self.selections.line_mode;
5091 if is_entire_line {
5092 start = Point::new(start.row, 0);
5093 end = cmp::min(max_point, Point::new(end.row + 1, 0));
5094 }
5095 if is_first {
5096 is_first = false;
5097 } else {
5098 text += "\n";
5099 }
5100 let mut len = 0;
5101 for chunk in buffer.text_for_range(start..end) {
5102 text.push_str(chunk);
5103 len += chunk.len();
5104 }
5105 clipboard_selections.push(ClipboardSelection {
5106 len,
5107 is_entire_line,
5108 first_line_indent: buffer.indent_size_for_line(start.row).len,
5109 });
5110 }
5111 }
5112
5113 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
5114 }
5115
5116 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
5117 if self.read_only(cx) {
5118 return;
5119 }
5120
5121 self.transact(cx, |this, cx| {
5122 if let Some(item) = cx.read_from_clipboard() {
5123 let clipboard_text = Cow::Borrowed(item.text());
5124 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
5125 let old_selections = this.selections.all::<usize>(cx);
5126 let all_selections_were_entire_line =
5127 clipboard_selections.iter().all(|s| s.is_entire_line);
5128 let first_selection_indent_column =
5129 clipboard_selections.first().map(|s| s.first_line_indent);
5130 if clipboard_selections.len() != old_selections.len() {
5131 clipboard_selections.drain(..);
5132 }
5133
5134 this.buffer.update(cx, |buffer, cx| {
5135 let snapshot = buffer.read(cx);
5136 let mut start_offset = 0;
5137 let mut edits = Vec::new();
5138 let mut original_indent_columns = Vec::new();
5139 let line_mode = this.selections.line_mode;
5140 for (ix, selection) in old_selections.iter().enumerate() {
5141 let to_insert;
5142 let entire_line;
5143 let original_indent_column;
5144 if let Some(clipboard_selection) = clipboard_selections.get(ix) {
5145 let end_offset = start_offset + clipboard_selection.len;
5146 to_insert = &clipboard_text[start_offset..end_offset];
5147 entire_line = clipboard_selection.is_entire_line;
5148 start_offset = end_offset + 1;
5149 original_indent_column =
5150 Some(clipboard_selection.first_line_indent);
5151 } else {
5152 to_insert = clipboard_text.as_str();
5153 entire_line = all_selections_were_entire_line;
5154 original_indent_column = first_selection_indent_column
5155 }
5156
5157 // If the corresponding selection was empty when this slice of the
5158 // clipboard text was written, then the entire line containing the
5159 // selection was copied. If this selection is also currently empty,
5160 // then paste the line before the current line of the buffer.
5161 let range = if selection.is_empty() && !line_mode && entire_line {
5162 let column = selection.start.to_point(&snapshot).column as usize;
5163 let line_start = selection.start - column;
5164 line_start..line_start
5165 } else {
5166 selection.range()
5167 };
5168
5169 edits.push((range, to_insert));
5170 original_indent_columns.extend(original_indent_column);
5171 }
5172 drop(snapshot);
5173
5174 buffer.edit(
5175 edits,
5176 Some(AutoindentMode::Block {
5177 original_indent_columns,
5178 }),
5179 cx,
5180 );
5181 });
5182
5183 let selections = this.selections.all::<usize>(cx);
5184 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(selections));
5185 } else {
5186 this.insert(&clipboard_text, cx);
5187 }
5188 }
5189 });
5190 }
5191
5192 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
5193 if self.read_only(cx) {
5194 return;
5195 }
5196
5197 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
5198 if let Some((selections, _)) = self.selection_history.transaction(tx_id).cloned() {
5199 self.change_selections(None, cx, |s| {
5200 s.select_anchors(selections.to_vec());
5201 });
5202 }
5203 self.request_autoscroll(Autoscroll::fit(), cx);
5204 self.unmark_text(cx);
5205 self.refresh_copilot_suggestions(true, cx);
5206 cx.emit(EditorEvent::Edited);
5207 }
5208 }
5209
5210 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
5211 if self.read_only(cx) {
5212 return;
5213 }
5214
5215 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
5216 if let Some((_, Some(selections))) = self.selection_history.transaction(tx_id).cloned()
5217 {
5218 self.change_selections(None, cx, |s| {
5219 s.select_anchors(selections.to_vec());
5220 });
5221 }
5222 self.request_autoscroll(Autoscroll::fit(), cx);
5223 self.unmark_text(cx);
5224 self.refresh_copilot_suggestions(true, cx);
5225 cx.emit(EditorEvent::Edited);
5226 }
5227 }
5228
5229 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
5230 self.buffer
5231 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
5232 }
5233
5234 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
5235 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5236 let line_mode = s.line_mode;
5237 s.move_with(|map, selection| {
5238 let cursor = if selection.is_empty() && !line_mode {
5239 movement::left(map, selection.start)
5240 } else {
5241 selection.start
5242 };
5243 selection.collapse_to(cursor, SelectionGoal::None);
5244 });
5245 })
5246 }
5247
5248 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
5249 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5250 s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
5251 })
5252 }
5253
5254 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
5255 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5256 let line_mode = s.line_mode;
5257 s.move_with(|map, selection| {
5258 let cursor = if selection.is_empty() && !line_mode {
5259 movement::right(map, selection.end)
5260 } else {
5261 selection.end
5262 };
5263 selection.collapse_to(cursor, SelectionGoal::None)
5264 });
5265 })
5266 }
5267
5268 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
5269 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5270 s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
5271 })
5272 }
5273
5274 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
5275 if self.take_rename(true, cx).is_some() {
5276 return;
5277 }
5278
5279 if matches!(self.mode, EditorMode::SingleLine) {
5280 cx.propagate();
5281 return;
5282 }
5283
5284 let text_layout_details = &self.text_layout_details(cx);
5285
5286 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5287 let line_mode = s.line_mode;
5288 s.move_with(|map, selection| {
5289 if !selection.is_empty() && !line_mode {
5290 selection.goal = SelectionGoal::None;
5291 }
5292 let (cursor, goal) = movement::up(
5293 map,
5294 selection.start,
5295 selection.goal,
5296 false,
5297 &text_layout_details,
5298 );
5299 selection.collapse_to(cursor, goal);
5300 });
5301 })
5302 }
5303
5304 pub fn move_page_up(&mut self, action: &MovePageUp, cx: &mut ViewContext<Self>) {
5305 if self.take_rename(true, cx).is_some() {
5306 return;
5307 }
5308
5309 if matches!(self.mode, EditorMode::SingleLine) {
5310 cx.propagate();
5311 return;
5312 }
5313
5314 let row_count = if let Some(row_count) = self.visible_line_count() {
5315 row_count as u32 - 1
5316 } else {
5317 return;
5318 };
5319
5320 let autoscroll = if action.center_cursor {
5321 Autoscroll::center()
5322 } else {
5323 Autoscroll::fit()
5324 };
5325
5326 let text_layout_details = &self.text_layout_details(cx);
5327
5328 self.change_selections(Some(autoscroll), cx, |s| {
5329 let line_mode = s.line_mode;
5330 s.move_with(|map, selection| {
5331 if !selection.is_empty() && !line_mode {
5332 selection.goal = SelectionGoal::None;
5333 }
5334 let (cursor, goal) = movement::up_by_rows(
5335 map,
5336 selection.end,
5337 row_count,
5338 selection.goal,
5339 false,
5340 &text_layout_details,
5341 );
5342 selection.collapse_to(cursor, goal);
5343 });
5344 });
5345 }
5346
5347 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
5348 let text_layout_details = &self.text_layout_details(cx);
5349 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5350 s.move_heads_with(|map, head, goal| {
5351 movement::up(map, head, goal, false, &text_layout_details)
5352 })
5353 })
5354 }
5355
5356 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
5357 self.take_rename(true, cx);
5358
5359 if self.mode == EditorMode::SingleLine {
5360 cx.propagate();
5361 return;
5362 }
5363
5364 let text_layout_details = &self.text_layout_details(cx);
5365 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5366 let line_mode = s.line_mode;
5367 s.move_with(|map, selection| {
5368 if !selection.is_empty() && !line_mode {
5369 selection.goal = SelectionGoal::None;
5370 }
5371 let (cursor, goal) = movement::down(
5372 map,
5373 selection.end,
5374 selection.goal,
5375 false,
5376 &text_layout_details,
5377 );
5378 selection.collapse_to(cursor, goal);
5379 });
5380 });
5381 }
5382
5383 pub fn move_page_down(&mut self, action: &MovePageDown, cx: &mut ViewContext<Self>) {
5384 if self.take_rename(true, cx).is_some() {
5385 return;
5386 }
5387
5388 if self
5389 .context_menu
5390 .write()
5391 .as_mut()
5392 .map(|menu| menu.select_last(self.project.as_ref(), cx))
5393 .unwrap_or(false)
5394 {
5395 return;
5396 }
5397
5398 if matches!(self.mode, EditorMode::SingleLine) {
5399 cx.propagate();
5400 return;
5401 }
5402
5403 let row_count = if let Some(row_count) = self.visible_line_count() {
5404 row_count as u32 - 1
5405 } else {
5406 return;
5407 };
5408
5409 let autoscroll = if action.center_cursor {
5410 Autoscroll::center()
5411 } else {
5412 Autoscroll::fit()
5413 };
5414
5415 let text_layout_details = &self.text_layout_details(cx);
5416 self.change_selections(Some(autoscroll), cx, |s| {
5417 let line_mode = s.line_mode;
5418 s.move_with(|map, selection| {
5419 if !selection.is_empty() && !line_mode {
5420 selection.goal = SelectionGoal::None;
5421 }
5422 let (cursor, goal) = movement::down_by_rows(
5423 map,
5424 selection.end,
5425 row_count,
5426 selection.goal,
5427 false,
5428 &text_layout_details,
5429 );
5430 selection.collapse_to(cursor, goal);
5431 });
5432 });
5433 }
5434
5435 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
5436 let text_layout_details = &self.text_layout_details(cx);
5437 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5438 s.move_heads_with(|map, head, goal| {
5439 movement::down(map, head, goal, false, &text_layout_details)
5440 })
5441 });
5442 }
5443
5444 pub fn context_menu_first(&mut self, _: &ContextMenuFirst, cx: &mut ViewContext<Self>) {
5445 if let Some(context_menu) = self.context_menu.write().as_mut() {
5446 context_menu.select_first(self.project.as_ref(), cx);
5447 }
5448 }
5449
5450 pub fn context_menu_prev(&mut self, _: &ContextMenuPrev, cx: &mut ViewContext<Self>) {
5451 if let Some(context_menu) = self.context_menu.write().as_mut() {
5452 context_menu.select_prev(self.project.as_ref(), cx);
5453 }
5454 }
5455
5456 pub fn context_menu_next(&mut self, _: &ContextMenuNext, cx: &mut ViewContext<Self>) {
5457 if let Some(context_menu) = self.context_menu.write().as_mut() {
5458 context_menu.select_next(self.project.as_ref(), cx);
5459 }
5460 }
5461
5462 pub fn context_menu_last(&mut self, _: &ContextMenuLast, cx: &mut ViewContext<Self>) {
5463 if let Some(context_menu) = self.context_menu.write().as_mut() {
5464 context_menu.select_last(self.project.as_ref(), cx);
5465 }
5466 }
5467
5468 pub fn move_to_previous_word_start(
5469 &mut self,
5470 _: &MoveToPreviousWordStart,
5471 cx: &mut ViewContext<Self>,
5472 ) {
5473 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5474 s.move_cursors_with(|map, head, _| {
5475 (
5476 movement::previous_word_start(map, head),
5477 SelectionGoal::None,
5478 )
5479 });
5480 })
5481 }
5482
5483 pub fn move_to_previous_subword_start(
5484 &mut self,
5485 _: &MoveToPreviousSubwordStart,
5486 cx: &mut ViewContext<Self>,
5487 ) {
5488 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5489 s.move_cursors_with(|map, head, _| {
5490 (
5491 movement::previous_subword_start(map, head),
5492 SelectionGoal::None,
5493 )
5494 });
5495 })
5496 }
5497
5498 pub fn select_to_previous_word_start(
5499 &mut self,
5500 _: &SelectToPreviousWordStart,
5501 cx: &mut ViewContext<Self>,
5502 ) {
5503 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5504 s.move_heads_with(|map, head, _| {
5505 (
5506 movement::previous_word_start(map, head),
5507 SelectionGoal::None,
5508 )
5509 });
5510 })
5511 }
5512
5513 pub fn select_to_previous_subword_start(
5514 &mut self,
5515 _: &SelectToPreviousSubwordStart,
5516 cx: &mut ViewContext<Self>,
5517 ) {
5518 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5519 s.move_heads_with(|map, head, _| {
5520 (
5521 movement::previous_subword_start(map, head),
5522 SelectionGoal::None,
5523 )
5524 });
5525 })
5526 }
5527
5528 pub fn delete_to_previous_word_start(
5529 &mut self,
5530 _: &DeleteToPreviousWordStart,
5531 cx: &mut ViewContext<Self>,
5532 ) {
5533 self.transact(cx, |this, cx| {
5534 this.select_autoclose_pair(cx);
5535 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
5536 let line_mode = s.line_mode;
5537 s.move_with(|map, selection| {
5538 if selection.is_empty() && !line_mode {
5539 let cursor = movement::previous_word_start(map, selection.head());
5540 selection.set_head(cursor, SelectionGoal::None);
5541 }
5542 });
5543 });
5544 this.insert("", cx);
5545 });
5546 }
5547
5548 pub fn delete_to_previous_subword_start(
5549 &mut self,
5550 _: &DeleteToPreviousSubwordStart,
5551 cx: &mut ViewContext<Self>,
5552 ) {
5553 self.transact(cx, |this, cx| {
5554 this.select_autoclose_pair(cx);
5555 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
5556 let line_mode = s.line_mode;
5557 s.move_with(|map, selection| {
5558 if selection.is_empty() && !line_mode {
5559 let cursor = movement::previous_subword_start(map, selection.head());
5560 selection.set_head(cursor, SelectionGoal::None);
5561 }
5562 });
5563 });
5564 this.insert("", cx);
5565 });
5566 }
5567
5568 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
5569 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5570 s.move_cursors_with(|map, head, _| {
5571 (movement::next_word_end(map, head), SelectionGoal::None)
5572 });
5573 })
5574 }
5575
5576 pub fn move_to_next_subword_end(
5577 &mut self,
5578 _: &MoveToNextSubwordEnd,
5579 cx: &mut ViewContext<Self>,
5580 ) {
5581 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5582 s.move_cursors_with(|map, head, _| {
5583 (movement::next_subword_end(map, head), SelectionGoal::None)
5584 });
5585 })
5586 }
5587
5588 pub fn select_to_next_word_end(&mut self, _: &SelectToNextWordEnd, cx: &mut ViewContext<Self>) {
5589 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5590 s.move_heads_with(|map, head, _| {
5591 (movement::next_word_end(map, head), SelectionGoal::None)
5592 });
5593 })
5594 }
5595
5596 pub fn select_to_next_subword_end(
5597 &mut self,
5598 _: &SelectToNextSubwordEnd,
5599 cx: &mut ViewContext<Self>,
5600 ) {
5601 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5602 s.move_heads_with(|map, head, _| {
5603 (movement::next_subword_end(map, head), SelectionGoal::None)
5604 });
5605 })
5606 }
5607
5608 pub fn delete_to_next_word_end(&mut self, _: &DeleteToNextWordEnd, cx: &mut ViewContext<Self>) {
5609 self.transact(cx, |this, cx| {
5610 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
5611 let line_mode = s.line_mode;
5612 s.move_with(|map, selection| {
5613 if selection.is_empty() && !line_mode {
5614 let cursor = movement::next_word_end(map, selection.head());
5615 selection.set_head(cursor, SelectionGoal::None);
5616 }
5617 });
5618 });
5619 this.insert("", cx);
5620 });
5621 }
5622
5623 pub fn delete_to_next_subword_end(
5624 &mut self,
5625 _: &DeleteToNextSubwordEnd,
5626 cx: &mut ViewContext<Self>,
5627 ) {
5628 self.transact(cx, |this, cx| {
5629 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
5630 s.move_with(|map, selection| {
5631 if selection.is_empty() {
5632 let cursor = movement::next_subword_end(map, selection.head());
5633 selection.set_head(cursor, SelectionGoal::None);
5634 }
5635 });
5636 });
5637 this.insert("", cx);
5638 });
5639 }
5640
5641 pub fn move_to_beginning_of_line(
5642 &mut self,
5643 _: &MoveToBeginningOfLine,
5644 cx: &mut ViewContext<Self>,
5645 ) {
5646 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5647 s.move_cursors_with(|map, head, _| {
5648 (
5649 movement::indented_line_beginning(map, head, true),
5650 SelectionGoal::None,
5651 )
5652 });
5653 })
5654 }
5655
5656 pub fn select_to_beginning_of_line(
5657 &mut self,
5658 action: &SelectToBeginningOfLine,
5659 cx: &mut ViewContext<Self>,
5660 ) {
5661 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5662 s.move_heads_with(|map, head, _| {
5663 (
5664 movement::indented_line_beginning(map, head, action.stop_at_soft_wraps),
5665 SelectionGoal::None,
5666 )
5667 });
5668 });
5669 }
5670
5671 pub fn delete_to_beginning_of_line(
5672 &mut self,
5673 _: &DeleteToBeginningOfLine,
5674 cx: &mut ViewContext<Self>,
5675 ) {
5676 self.transact(cx, |this, cx| {
5677 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
5678 s.move_with(|_, selection| {
5679 selection.reversed = true;
5680 });
5681 });
5682
5683 this.select_to_beginning_of_line(
5684 &SelectToBeginningOfLine {
5685 stop_at_soft_wraps: false,
5686 },
5687 cx,
5688 );
5689 this.backspace(&Backspace, cx);
5690 });
5691 }
5692
5693 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
5694 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5695 s.move_cursors_with(|map, head, _| {
5696 (movement::line_end(map, head, true), SelectionGoal::None)
5697 });
5698 })
5699 }
5700
5701 pub fn select_to_end_of_line(
5702 &mut self,
5703 action: &SelectToEndOfLine,
5704 cx: &mut ViewContext<Self>,
5705 ) {
5706 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5707 s.move_heads_with(|map, head, _| {
5708 (
5709 movement::line_end(map, head, action.stop_at_soft_wraps),
5710 SelectionGoal::None,
5711 )
5712 });
5713 })
5714 }
5715
5716 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
5717 self.transact(cx, |this, cx| {
5718 this.select_to_end_of_line(
5719 &SelectToEndOfLine {
5720 stop_at_soft_wraps: false,
5721 },
5722 cx,
5723 );
5724 this.delete(&Delete, cx);
5725 });
5726 }
5727
5728 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
5729 self.transact(cx, |this, cx| {
5730 this.select_to_end_of_line(
5731 &SelectToEndOfLine {
5732 stop_at_soft_wraps: false,
5733 },
5734 cx,
5735 );
5736 this.cut(&Cut, cx);
5737 });
5738 }
5739
5740 pub fn move_to_start_of_paragraph(
5741 &mut self,
5742 _: &MoveToStartOfParagraph,
5743 cx: &mut ViewContext<Self>,
5744 ) {
5745 if matches!(self.mode, EditorMode::SingleLine) {
5746 cx.propagate();
5747 return;
5748 }
5749
5750 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5751 s.move_with(|map, selection| {
5752 selection.collapse_to(
5753 movement::start_of_paragraph(map, selection.head(), 1),
5754 SelectionGoal::None,
5755 )
5756 });
5757 })
5758 }
5759
5760 pub fn move_to_end_of_paragraph(
5761 &mut self,
5762 _: &MoveToEndOfParagraph,
5763 cx: &mut ViewContext<Self>,
5764 ) {
5765 if matches!(self.mode, EditorMode::SingleLine) {
5766 cx.propagate();
5767 return;
5768 }
5769
5770 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5771 s.move_with(|map, selection| {
5772 selection.collapse_to(
5773 movement::end_of_paragraph(map, selection.head(), 1),
5774 SelectionGoal::None,
5775 )
5776 });
5777 })
5778 }
5779
5780 pub fn select_to_start_of_paragraph(
5781 &mut self,
5782 _: &SelectToStartOfParagraph,
5783 cx: &mut ViewContext<Self>,
5784 ) {
5785 if matches!(self.mode, EditorMode::SingleLine) {
5786 cx.propagate();
5787 return;
5788 }
5789
5790 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5791 s.move_heads_with(|map, head, _| {
5792 (
5793 movement::start_of_paragraph(map, head, 1),
5794 SelectionGoal::None,
5795 )
5796 });
5797 })
5798 }
5799
5800 pub fn select_to_end_of_paragraph(
5801 &mut self,
5802 _: &SelectToEndOfParagraph,
5803 cx: &mut ViewContext<Self>,
5804 ) {
5805 if matches!(self.mode, EditorMode::SingleLine) {
5806 cx.propagate();
5807 return;
5808 }
5809
5810 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5811 s.move_heads_with(|map, head, _| {
5812 (
5813 movement::end_of_paragraph(map, head, 1),
5814 SelectionGoal::None,
5815 )
5816 });
5817 })
5818 }
5819
5820 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
5821 if matches!(self.mode, EditorMode::SingleLine) {
5822 cx.propagate();
5823 return;
5824 }
5825
5826 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5827 s.select_ranges(vec![0..0]);
5828 });
5829 }
5830
5831 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
5832 let mut selection = self.selections.last::<Point>(cx);
5833 selection.set_head(Point::zero(), SelectionGoal::None);
5834
5835 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5836 s.select(vec![selection]);
5837 });
5838 }
5839
5840 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
5841 if matches!(self.mode, EditorMode::SingleLine) {
5842 cx.propagate();
5843 return;
5844 }
5845
5846 let cursor = self.buffer.read(cx).read(cx).len();
5847 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5848 s.select_ranges(vec![cursor..cursor])
5849 });
5850 }
5851
5852 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
5853 self.nav_history = nav_history;
5854 }
5855
5856 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
5857 self.nav_history.as_ref()
5858 }
5859
5860 fn push_to_nav_history(
5861 &mut self,
5862 cursor_anchor: Anchor,
5863 new_position: Option<Point>,
5864 cx: &mut ViewContext<Self>,
5865 ) {
5866 if let Some(nav_history) = self.nav_history.as_mut() {
5867 let buffer = self.buffer.read(cx).read(cx);
5868 let cursor_position = cursor_anchor.to_point(&buffer);
5869 let scroll_state = self.scroll_manager.anchor();
5870 let scroll_top_row = scroll_state.top_row(&buffer);
5871 drop(buffer);
5872
5873 if let Some(new_position) = new_position {
5874 let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
5875 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
5876 return;
5877 }
5878 }
5879
5880 nav_history.push(
5881 Some(NavigationData {
5882 cursor_anchor,
5883 cursor_position,
5884 scroll_anchor: scroll_state,
5885 scroll_top_row,
5886 }),
5887 cx,
5888 );
5889 }
5890 }
5891
5892 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
5893 let buffer = self.buffer.read(cx).snapshot(cx);
5894 let mut selection = self.selections.first::<usize>(cx);
5895 selection.set_head(buffer.len(), SelectionGoal::None);
5896 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5897 s.select(vec![selection]);
5898 });
5899 }
5900
5901 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
5902 let end = self.buffer.read(cx).read(cx).len();
5903 self.change_selections(None, cx, |s| {
5904 s.select_ranges(vec![0..end]);
5905 });
5906 }
5907
5908 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
5909 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5910 let mut selections = self.selections.all::<Point>(cx);
5911 let max_point = display_map.buffer_snapshot.max_point();
5912 for selection in &mut selections {
5913 let rows = selection.spanned_rows(true, &display_map);
5914 selection.start = Point::new(rows.start, 0);
5915 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
5916 selection.reversed = false;
5917 }
5918 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5919 s.select(selections);
5920 });
5921 }
5922
5923 pub fn split_selection_into_lines(
5924 &mut self,
5925 _: &SplitSelectionIntoLines,
5926 cx: &mut ViewContext<Self>,
5927 ) {
5928 let mut to_unfold = Vec::new();
5929 let mut new_selection_ranges = Vec::new();
5930 {
5931 let selections = self.selections.all::<Point>(cx);
5932 let buffer = self.buffer.read(cx).read(cx);
5933 for selection in selections {
5934 for row in selection.start.row..selection.end.row {
5935 let cursor = Point::new(row, buffer.line_len(row));
5936 new_selection_ranges.push(cursor..cursor);
5937 }
5938 new_selection_ranges.push(selection.end..selection.end);
5939 to_unfold.push(selection.start..selection.end);
5940 }
5941 }
5942 self.unfold_ranges(to_unfold, true, true, cx);
5943 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
5944 s.select_ranges(new_selection_ranges);
5945 });
5946 }
5947
5948 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
5949 self.add_selection(true, cx);
5950 }
5951
5952 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
5953 self.add_selection(false, cx);
5954 }
5955
5956 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
5957 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5958 let mut selections = self.selections.all::<Point>(cx);
5959 let text_layout_details = self.text_layout_details(cx);
5960 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
5961 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
5962 let range = oldest_selection.display_range(&display_map).sorted();
5963
5964 let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
5965 let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
5966 let positions = start_x.min(end_x)..start_x.max(end_x);
5967
5968 selections.clear();
5969 let mut stack = Vec::new();
5970 for row in range.start.row()..=range.end.row() {
5971 if let Some(selection) = self.selections.build_columnar_selection(
5972 &display_map,
5973 row,
5974 &positions,
5975 oldest_selection.reversed,
5976 &text_layout_details,
5977 ) {
5978 stack.push(selection.id);
5979 selections.push(selection);
5980 }
5981 }
5982
5983 if above {
5984 stack.reverse();
5985 }
5986
5987 AddSelectionsState { above, stack }
5988 });
5989
5990 let last_added_selection = *state.stack.last().unwrap();
5991 let mut new_selections = Vec::new();
5992 if above == state.above {
5993 let end_row = if above {
5994 0
5995 } else {
5996 display_map.max_point().row()
5997 };
5998
5999 'outer: for selection in selections {
6000 if selection.id == last_added_selection {
6001 let range = selection.display_range(&display_map).sorted();
6002 debug_assert_eq!(range.start.row(), range.end.row());
6003 let mut row = range.start.row();
6004 let positions =
6005 if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
6006 px(start)..px(end)
6007 } else {
6008 let start_x =
6009 display_map.x_for_display_point(range.start, &text_layout_details);
6010 let end_x =
6011 display_map.x_for_display_point(range.end, &text_layout_details);
6012 start_x.min(end_x)..start_x.max(end_x)
6013 };
6014
6015 while row != end_row {
6016 if above {
6017 row -= 1;
6018 } else {
6019 row += 1;
6020 }
6021
6022 if let Some(new_selection) = self.selections.build_columnar_selection(
6023 &display_map,
6024 row,
6025 &positions,
6026 selection.reversed,
6027 &text_layout_details,
6028 ) {
6029 state.stack.push(new_selection.id);
6030 if above {
6031 new_selections.push(new_selection);
6032 new_selections.push(selection);
6033 } else {
6034 new_selections.push(selection);
6035 new_selections.push(new_selection);
6036 }
6037
6038 continue 'outer;
6039 }
6040 }
6041 }
6042
6043 new_selections.push(selection);
6044 }
6045 } else {
6046 new_selections = selections;
6047 new_selections.retain(|s| s.id != last_added_selection);
6048 state.stack.pop();
6049 }
6050
6051 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
6052 s.select(new_selections);
6053 });
6054 if state.stack.len() > 1 {
6055 self.add_selections_state = Some(state);
6056 }
6057 }
6058
6059 pub fn select_next_match_internal(
6060 &mut self,
6061 display_map: &DisplaySnapshot,
6062 replace_newest: bool,
6063 autoscroll: Option<Autoscroll>,
6064 cx: &mut ViewContext<Self>,
6065 ) -> Result<()> {
6066 fn select_next_match_ranges(
6067 this: &mut Editor,
6068 range: Range<usize>,
6069 replace_newest: bool,
6070 auto_scroll: Option<Autoscroll>,
6071 cx: &mut ViewContext<Editor>,
6072 ) {
6073 this.unfold_ranges([range.clone()], false, true, cx);
6074 this.change_selections(auto_scroll, cx, |s| {
6075 if replace_newest {
6076 s.delete(s.newest_anchor().id);
6077 }
6078 s.insert_range(range.clone());
6079 });
6080 }
6081
6082 let buffer = &display_map.buffer_snapshot;
6083 let mut selections = self.selections.all::<usize>(cx);
6084 if let Some(mut select_next_state) = self.select_next_state.take() {
6085 let query = &select_next_state.query;
6086 if !select_next_state.done {
6087 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
6088 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
6089 let mut next_selected_range = None;
6090
6091 let bytes_after_last_selection =
6092 buffer.bytes_in_range(last_selection.end..buffer.len());
6093 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
6094 let query_matches = query
6095 .stream_find_iter(bytes_after_last_selection)
6096 .map(|result| (last_selection.end, result))
6097 .chain(
6098 query
6099 .stream_find_iter(bytes_before_first_selection)
6100 .map(|result| (0, result)),
6101 );
6102
6103 for (start_offset, query_match) in query_matches {
6104 let query_match = query_match.unwrap(); // can only fail due to I/O
6105 let offset_range =
6106 start_offset + query_match.start()..start_offset + query_match.end();
6107 let display_range = offset_range.start.to_display_point(&display_map)
6108 ..offset_range.end.to_display_point(&display_map);
6109
6110 if !select_next_state.wordwise
6111 || (!movement::is_inside_word(&display_map, display_range.start)
6112 && !movement::is_inside_word(&display_map, display_range.end))
6113 {
6114 if selections
6115 .iter()
6116 .find(|selection| selection.range().overlaps(&offset_range))
6117 .is_none()
6118 {
6119 next_selected_range = Some(offset_range);
6120 break;
6121 }
6122 }
6123 }
6124
6125 if let Some(next_selected_range) = next_selected_range {
6126 select_next_match_ranges(
6127 self,
6128 next_selected_range,
6129 replace_newest,
6130 autoscroll,
6131 cx,
6132 );
6133 } else {
6134 select_next_state.done = true;
6135 }
6136 }
6137
6138 self.select_next_state = Some(select_next_state);
6139 } else {
6140 let mut only_carets = true;
6141 let mut same_text_selected = true;
6142 let mut selected_text = None;
6143
6144 let mut selections_iter = selections.iter().peekable();
6145 while let Some(selection) = selections_iter.next() {
6146 if selection.start != selection.end {
6147 only_carets = false;
6148 }
6149
6150 if same_text_selected {
6151 if selected_text.is_none() {
6152 selected_text =
6153 Some(buffer.text_for_range(selection.range()).collect::<String>());
6154 }
6155
6156 if let Some(next_selection) = selections_iter.peek() {
6157 if next_selection.range().len() == selection.range().len() {
6158 let next_selected_text = buffer
6159 .text_for_range(next_selection.range())
6160 .collect::<String>();
6161 if Some(next_selected_text) != selected_text {
6162 same_text_selected = false;
6163 selected_text = None;
6164 }
6165 } else {
6166 same_text_selected = false;
6167 selected_text = None;
6168 }
6169 }
6170 }
6171 }
6172
6173 if only_carets {
6174 for selection in &mut selections {
6175 let word_range = movement::surrounding_word(
6176 &display_map,
6177 selection.start.to_display_point(&display_map),
6178 );
6179 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
6180 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
6181 selection.goal = SelectionGoal::None;
6182 selection.reversed = false;
6183 select_next_match_ranges(
6184 self,
6185 selection.start..selection.end,
6186 replace_newest,
6187 autoscroll,
6188 cx,
6189 );
6190 }
6191
6192 if selections.len() == 1 {
6193 let selection = selections
6194 .last()
6195 .expect("ensured that there's only one selection");
6196 let query = buffer
6197 .text_for_range(selection.start..selection.end)
6198 .collect::<String>();
6199 let is_empty = query.is_empty();
6200 let select_state = SelectNextState {
6201 query: AhoCorasick::new(&[query])?,
6202 wordwise: true,
6203 done: is_empty,
6204 };
6205 self.select_next_state = Some(select_state);
6206 } else {
6207 self.select_next_state = None;
6208 }
6209 } else if let Some(selected_text) = selected_text {
6210 self.select_next_state = Some(SelectNextState {
6211 query: AhoCorasick::new(&[selected_text])?,
6212 wordwise: false,
6213 done: false,
6214 });
6215 self.select_next_match_internal(display_map, replace_newest, autoscroll, cx)?;
6216 }
6217 }
6218 Ok(())
6219 }
6220
6221 pub fn select_all_matches(
6222 &mut self,
6223 action: &SelectAllMatches,
6224 cx: &mut ViewContext<Self>,
6225 ) -> Result<()> {
6226 self.push_to_selection_history();
6227 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
6228
6229 loop {
6230 self.select_next_match_internal(&display_map, action.replace_newest, None, cx)?;
6231
6232 if self
6233 .select_next_state
6234 .as_ref()
6235 .map(|selection_state| selection_state.done)
6236 .unwrap_or(true)
6237 {
6238 break;
6239 }
6240 }
6241
6242 Ok(())
6243 }
6244
6245 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) -> Result<()> {
6246 self.push_to_selection_history();
6247 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
6248 self.select_next_match_internal(
6249 &display_map,
6250 action.replace_newest,
6251 Some(Autoscroll::newest()),
6252 cx,
6253 )?;
6254 Ok(())
6255 }
6256
6257 pub fn select_previous(
6258 &mut self,
6259 action: &SelectPrevious,
6260 cx: &mut ViewContext<Self>,
6261 ) -> Result<()> {
6262 self.push_to_selection_history();
6263 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
6264 let buffer = &display_map.buffer_snapshot;
6265 let mut selections = self.selections.all::<usize>(cx);
6266 if let Some(mut select_prev_state) = self.select_prev_state.take() {
6267 let query = &select_prev_state.query;
6268 if !select_prev_state.done {
6269 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
6270 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
6271 let mut next_selected_range = None;
6272 // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
6273 let bytes_before_last_selection =
6274 buffer.reversed_bytes_in_range(0..last_selection.start);
6275 let bytes_after_first_selection =
6276 buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
6277 let query_matches = query
6278 .stream_find_iter(bytes_before_last_selection)
6279 .map(|result| (last_selection.start, result))
6280 .chain(
6281 query
6282 .stream_find_iter(bytes_after_first_selection)
6283 .map(|result| (buffer.len(), result)),
6284 );
6285 for (end_offset, query_match) in query_matches {
6286 let query_match = query_match.unwrap(); // can only fail due to I/O
6287 let offset_range =
6288 end_offset - query_match.end()..end_offset - query_match.start();
6289 let display_range = offset_range.start.to_display_point(&display_map)
6290 ..offset_range.end.to_display_point(&display_map);
6291
6292 if !select_prev_state.wordwise
6293 || (!movement::is_inside_word(&display_map, display_range.start)
6294 && !movement::is_inside_word(&display_map, display_range.end))
6295 {
6296 next_selected_range = Some(offset_range);
6297 break;
6298 }
6299 }
6300
6301 if let Some(next_selected_range) = next_selected_range {
6302 self.unfold_ranges([next_selected_range.clone()], false, true, cx);
6303 self.change_selections(Some(Autoscroll::newest()), cx, |s| {
6304 if action.replace_newest {
6305 s.delete(s.newest_anchor().id);
6306 }
6307 s.insert_range(next_selected_range);
6308 });
6309 } else {
6310 select_prev_state.done = true;
6311 }
6312 }
6313
6314 self.select_prev_state = Some(select_prev_state);
6315 } else {
6316 let mut only_carets = true;
6317 let mut same_text_selected = true;
6318 let mut selected_text = None;
6319
6320 let mut selections_iter = selections.iter().peekable();
6321 while let Some(selection) = selections_iter.next() {
6322 if selection.start != selection.end {
6323 only_carets = false;
6324 }
6325
6326 if same_text_selected {
6327 if selected_text.is_none() {
6328 selected_text =
6329 Some(buffer.text_for_range(selection.range()).collect::<String>());
6330 }
6331
6332 if let Some(next_selection) = selections_iter.peek() {
6333 if next_selection.range().len() == selection.range().len() {
6334 let next_selected_text = buffer
6335 .text_for_range(next_selection.range())
6336 .collect::<String>();
6337 if Some(next_selected_text) != selected_text {
6338 same_text_selected = false;
6339 selected_text = None;
6340 }
6341 } else {
6342 same_text_selected = false;
6343 selected_text = None;
6344 }
6345 }
6346 }
6347 }
6348
6349 if only_carets {
6350 for selection in &mut selections {
6351 let word_range = movement::surrounding_word(
6352 &display_map,
6353 selection.start.to_display_point(&display_map),
6354 );
6355 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
6356 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
6357 selection.goal = SelectionGoal::None;
6358 selection.reversed = false;
6359 }
6360 if selections.len() == 1 {
6361 let selection = selections
6362 .last()
6363 .expect("ensured that there's only one selection");
6364 let query = buffer
6365 .text_for_range(selection.start..selection.end)
6366 .collect::<String>();
6367 let is_empty = query.is_empty();
6368 let select_state = SelectNextState {
6369 query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
6370 wordwise: true,
6371 done: is_empty,
6372 };
6373 self.select_prev_state = Some(select_state);
6374 } else {
6375 self.select_prev_state = None;
6376 }
6377
6378 self.unfold_ranges(
6379 selections.iter().map(|s| s.range()).collect::<Vec<_>>(),
6380 false,
6381 true,
6382 cx,
6383 );
6384 self.change_selections(Some(Autoscroll::newest()), cx, |s| {
6385 s.select(selections);
6386 });
6387 } else if let Some(selected_text) = selected_text {
6388 self.select_prev_state = Some(SelectNextState {
6389 query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
6390 wordwise: false,
6391 done: false,
6392 });
6393 self.select_previous(action, cx)?;
6394 }
6395 }
6396 Ok(())
6397 }
6398
6399 pub fn toggle_comments(&mut self, action: &ToggleComments, cx: &mut ViewContext<Self>) {
6400 let text_layout_details = &self.text_layout_details(cx);
6401 self.transact(cx, |this, cx| {
6402 let mut selections = this.selections.all::<Point>(cx);
6403 let mut edits = Vec::new();
6404 let mut selection_edit_ranges = Vec::new();
6405 let mut last_toggled_row = None;
6406 let snapshot = this.buffer.read(cx).read(cx);
6407 let empty_str: Arc<str> = "".into();
6408 let mut suffixes_inserted = Vec::new();
6409
6410 fn comment_prefix_range(
6411 snapshot: &MultiBufferSnapshot,
6412 row: u32,
6413 comment_prefix: &str,
6414 comment_prefix_whitespace: &str,
6415 ) -> Range<Point> {
6416 let start = Point::new(row, snapshot.indent_size_for_line(row).len);
6417
6418 let mut line_bytes = snapshot
6419 .bytes_in_range(start..snapshot.max_point())
6420 .flatten()
6421 .copied();
6422
6423 // If this line currently begins with the line comment prefix, then record
6424 // the range containing the prefix.
6425 if line_bytes
6426 .by_ref()
6427 .take(comment_prefix.len())
6428 .eq(comment_prefix.bytes())
6429 {
6430 // Include any whitespace that matches the comment prefix.
6431 let matching_whitespace_len = line_bytes
6432 .zip(comment_prefix_whitespace.bytes())
6433 .take_while(|(a, b)| a == b)
6434 .count() as u32;
6435 let end = Point::new(
6436 start.row,
6437 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
6438 );
6439 start..end
6440 } else {
6441 start..start
6442 }
6443 }
6444
6445 fn comment_suffix_range(
6446 snapshot: &MultiBufferSnapshot,
6447 row: u32,
6448 comment_suffix: &str,
6449 comment_suffix_has_leading_space: bool,
6450 ) -> Range<Point> {
6451 let end = Point::new(row, snapshot.line_len(row));
6452 let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
6453
6454 let mut line_end_bytes = snapshot
6455 .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
6456 .flatten()
6457 .copied();
6458
6459 let leading_space_len = if suffix_start_column > 0
6460 && line_end_bytes.next() == Some(b' ')
6461 && comment_suffix_has_leading_space
6462 {
6463 1
6464 } else {
6465 0
6466 };
6467
6468 // If this line currently begins with the line comment prefix, then record
6469 // the range containing the prefix.
6470 if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
6471 let start = Point::new(end.row, suffix_start_column - leading_space_len);
6472 start..end
6473 } else {
6474 end..end
6475 }
6476 }
6477
6478 // TODO: Handle selections that cross excerpts
6479 for selection in &mut selections {
6480 let start_column = snapshot.indent_size_for_line(selection.start.row).len;
6481 let language = if let Some(language) =
6482 snapshot.language_scope_at(Point::new(selection.start.row, start_column))
6483 {
6484 language
6485 } else {
6486 continue;
6487 };
6488
6489 selection_edit_ranges.clear();
6490
6491 // If multiple selections contain a given row, avoid processing that
6492 // row more than once.
6493 let mut start_row = selection.start.row;
6494 if last_toggled_row == Some(start_row) {
6495 start_row += 1;
6496 }
6497 let end_row =
6498 if selection.end.row > selection.start.row && selection.end.column == 0 {
6499 selection.end.row - 1
6500 } else {
6501 selection.end.row
6502 };
6503 last_toggled_row = Some(end_row);
6504
6505 if start_row > end_row {
6506 continue;
6507 }
6508
6509 // If the language has line comments, toggle those.
6510 if let Some(full_comment_prefix) = language.line_comment_prefix() {
6511 // Split the comment prefix's trailing whitespace into a separate string,
6512 // as that portion won't be used for detecting if a line is a comment.
6513 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
6514 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
6515 let mut all_selection_lines_are_comments = true;
6516
6517 for row in start_row..=end_row {
6518 if snapshot.is_line_blank(row) && start_row < end_row {
6519 continue;
6520 }
6521
6522 let prefix_range = comment_prefix_range(
6523 snapshot.deref(),
6524 row,
6525 comment_prefix,
6526 comment_prefix_whitespace,
6527 );
6528 if prefix_range.is_empty() {
6529 all_selection_lines_are_comments = false;
6530 }
6531 selection_edit_ranges.push(prefix_range);
6532 }
6533
6534 if all_selection_lines_are_comments {
6535 edits.extend(
6536 selection_edit_ranges
6537 .iter()
6538 .cloned()
6539 .map(|range| (range, empty_str.clone())),
6540 );
6541 } else {
6542 let min_column = selection_edit_ranges
6543 .iter()
6544 .map(|r| r.start.column)
6545 .min()
6546 .unwrap_or(0);
6547 edits.extend(selection_edit_ranges.iter().map(|range| {
6548 let position = Point::new(range.start.row, min_column);
6549 (position..position, full_comment_prefix.clone())
6550 }));
6551 }
6552 } else if let Some((full_comment_prefix, comment_suffix)) =
6553 language.block_comment_delimiters()
6554 {
6555 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
6556 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
6557 let prefix_range = comment_prefix_range(
6558 snapshot.deref(),
6559 start_row,
6560 comment_prefix,
6561 comment_prefix_whitespace,
6562 );
6563 let suffix_range = comment_suffix_range(
6564 snapshot.deref(),
6565 end_row,
6566 comment_suffix.trim_start_matches(' '),
6567 comment_suffix.starts_with(' '),
6568 );
6569
6570 if prefix_range.is_empty() || suffix_range.is_empty() {
6571 edits.push((
6572 prefix_range.start..prefix_range.start,
6573 full_comment_prefix.clone(),
6574 ));
6575 edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
6576 suffixes_inserted.push((end_row, comment_suffix.len()));
6577 } else {
6578 edits.push((prefix_range, empty_str.clone()));
6579 edits.push((suffix_range, empty_str.clone()));
6580 }
6581 } else {
6582 continue;
6583 }
6584 }
6585
6586 drop(snapshot);
6587 this.buffer.update(cx, |buffer, cx| {
6588 buffer.edit(edits, None, cx);
6589 });
6590
6591 // Adjust selections so that they end before any comment suffixes that
6592 // were inserted.
6593 let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
6594 let mut selections = this.selections.all::<Point>(cx);
6595 let snapshot = this.buffer.read(cx).read(cx);
6596 for selection in &mut selections {
6597 while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
6598 match row.cmp(&selection.end.row) {
6599 Ordering::Less => {
6600 suffixes_inserted.next();
6601 continue;
6602 }
6603 Ordering::Greater => break,
6604 Ordering::Equal => {
6605 if selection.end.column == snapshot.line_len(row) {
6606 if selection.is_empty() {
6607 selection.start.column -= suffix_len as u32;
6608 }
6609 selection.end.column -= suffix_len as u32;
6610 }
6611 break;
6612 }
6613 }
6614 }
6615 }
6616
6617 drop(snapshot);
6618 this.change_selections(Some(Autoscroll::fit()), cx, |s| s.select(selections));
6619
6620 let selections = this.selections.all::<Point>(cx);
6621 let selections_on_single_row = selections.windows(2).all(|selections| {
6622 selections[0].start.row == selections[1].start.row
6623 && selections[0].end.row == selections[1].end.row
6624 && selections[0].start.row == selections[0].end.row
6625 });
6626 let selections_selecting = selections
6627 .iter()
6628 .any(|selection| selection.start != selection.end);
6629 let advance_downwards = action.advance_downwards
6630 && selections_on_single_row
6631 && !selections_selecting
6632 && this.mode != EditorMode::SingleLine;
6633
6634 if advance_downwards {
6635 let snapshot = this.buffer.read(cx).snapshot(cx);
6636
6637 this.change_selections(Some(Autoscroll::fit()), cx, |s| {
6638 s.move_cursors_with(|display_snapshot, display_point, _| {
6639 let mut point = display_point.to_point(display_snapshot);
6640 point.row += 1;
6641 point = snapshot.clip_point(point, Bias::Left);
6642 let display_point = point.to_display_point(display_snapshot);
6643 let goal = SelectionGoal::HorizontalPosition(
6644 display_snapshot
6645 .x_for_display_point(display_point, &text_layout_details)
6646 .into(),
6647 );
6648 (display_point, goal)
6649 })
6650 });
6651 }
6652 });
6653 }
6654
6655 pub fn select_larger_syntax_node(
6656 &mut self,
6657 _: &SelectLargerSyntaxNode,
6658 cx: &mut ViewContext<Self>,
6659 ) {
6660 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
6661 let buffer = self.buffer.read(cx).snapshot(cx);
6662 let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
6663
6664 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
6665 let mut selected_larger_node = false;
6666 let new_selections = old_selections
6667 .iter()
6668 .map(|selection| {
6669 let old_range = selection.start..selection.end;
6670 let mut new_range = old_range.clone();
6671 while let Some(containing_range) =
6672 buffer.range_for_syntax_ancestor(new_range.clone())
6673 {
6674 new_range = containing_range;
6675 if !display_map.intersects_fold(new_range.start)
6676 && !display_map.intersects_fold(new_range.end)
6677 {
6678 break;
6679 }
6680 }
6681
6682 selected_larger_node |= new_range != old_range;
6683 Selection {
6684 id: selection.id,
6685 start: new_range.start,
6686 end: new_range.end,
6687 goal: SelectionGoal::None,
6688 reversed: selection.reversed,
6689 }
6690 })
6691 .collect::<Vec<_>>();
6692
6693 if selected_larger_node {
6694 stack.push(old_selections);
6695 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
6696 s.select(new_selections);
6697 });
6698 }
6699 self.select_larger_syntax_node_stack = stack;
6700 }
6701
6702 pub fn select_smaller_syntax_node(
6703 &mut self,
6704 _: &SelectSmallerSyntaxNode,
6705 cx: &mut ViewContext<Self>,
6706 ) {
6707 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
6708 if let Some(selections) = stack.pop() {
6709 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
6710 s.select(selections.to_vec());
6711 });
6712 }
6713 self.select_larger_syntax_node_stack = stack;
6714 }
6715
6716 pub fn move_to_enclosing_bracket(
6717 &mut self,
6718 _: &MoveToEnclosingBracket,
6719 cx: &mut ViewContext<Self>,
6720 ) {
6721 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
6722 s.move_offsets_with(|snapshot, selection| {
6723 let Some(enclosing_bracket_ranges) =
6724 snapshot.enclosing_bracket_ranges(selection.start..selection.end)
6725 else {
6726 return;
6727 };
6728
6729 let mut best_length = usize::MAX;
6730 let mut best_inside = false;
6731 let mut best_in_bracket_range = false;
6732 let mut best_destination = None;
6733 for (open, close) in enclosing_bracket_ranges {
6734 let close = close.to_inclusive();
6735 let length = close.end() - open.start;
6736 let inside = selection.start >= open.end && selection.end <= *close.start();
6737 let in_bracket_range = open.to_inclusive().contains(&selection.head())
6738 || close.contains(&selection.head());
6739
6740 // If best is next to a bracket and current isn't, skip
6741 if !in_bracket_range && best_in_bracket_range {
6742 continue;
6743 }
6744
6745 // Prefer smaller lengths unless best is inside and current isn't
6746 if length > best_length && (best_inside || !inside) {
6747 continue;
6748 }
6749
6750 best_length = length;
6751 best_inside = inside;
6752 best_in_bracket_range = in_bracket_range;
6753 best_destination = Some(
6754 if close.contains(&selection.start) && close.contains(&selection.end) {
6755 if inside {
6756 open.end
6757 } else {
6758 open.start
6759 }
6760 } else {
6761 if inside {
6762 *close.start()
6763 } else {
6764 *close.end()
6765 }
6766 },
6767 );
6768 }
6769
6770 if let Some(destination) = best_destination {
6771 selection.collapse_to(destination, SelectionGoal::None);
6772 }
6773 })
6774 });
6775 }
6776
6777 pub fn undo_selection(&mut self, _: &UndoSelection, cx: &mut ViewContext<Self>) {
6778 self.end_selection(cx);
6779 self.selection_history.mode = SelectionHistoryMode::Undoing;
6780 if let Some(entry) = self.selection_history.undo_stack.pop_back() {
6781 self.change_selections(None, cx, |s| s.select_anchors(entry.selections.to_vec()));
6782 self.select_next_state = entry.select_next_state;
6783 self.select_prev_state = entry.select_prev_state;
6784 self.add_selections_state = entry.add_selections_state;
6785 self.request_autoscroll(Autoscroll::newest(), cx);
6786 }
6787 self.selection_history.mode = SelectionHistoryMode::Normal;
6788 }
6789
6790 pub fn redo_selection(&mut self, _: &RedoSelection, cx: &mut ViewContext<Self>) {
6791 self.end_selection(cx);
6792 self.selection_history.mode = SelectionHistoryMode::Redoing;
6793 if let Some(entry) = self.selection_history.redo_stack.pop_back() {
6794 self.change_selections(None, cx, |s| s.select_anchors(entry.selections.to_vec()));
6795 self.select_next_state = entry.select_next_state;
6796 self.select_prev_state = entry.select_prev_state;
6797 self.add_selections_state = entry.add_selections_state;
6798 self.request_autoscroll(Autoscroll::newest(), cx);
6799 }
6800 self.selection_history.mode = SelectionHistoryMode::Normal;
6801 }
6802
6803 fn go_to_diagnostic(&mut self, _: &GoToDiagnostic, cx: &mut ViewContext<Self>) {
6804 self.go_to_diagnostic_impl(Direction::Next, cx)
6805 }
6806
6807 fn go_to_prev_diagnostic(&mut self, _: &GoToPrevDiagnostic, cx: &mut ViewContext<Self>) {
6808 self.go_to_diagnostic_impl(Direction::Prev, cx)
6809 }
6810
6811 pub fn go_to_diagnostic_impl(&mut self, direction: Direction, cx: &mut ViewContext<Self>) {
6812 let buffer = self.buffer.read(cx).snapshot(cx);
6813 let selection = self.selections.newest::<usize>(cx);
6814
6815 // If there is an active Diagnostic Popover jump to its diagnostic instead.
6816 if direction == Direction::Next {
6817 if let Some(popover) = self.hover_state.diagnostic_popover.as_ref() {
6818 let (group_id, jump_to) = popover.activation_info();
6819 if self.activate_diagnostics(group_id, cx) {
6820 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
6821 let mut new_selection = s.newest_anchor().clone();
6822 new_selection.collapse_to(jump_to, SelectionGoal::None);
6823 s.select_anchors(vec![new_selection.clone()]);
6824 });
6825 }
6826 return;
6827 }
6828 }
6829
6830 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
6831 active_diagnostics
6832 .primary_range
6833 .to_offset(&buffer)
6834 .to_inclusive()
6835 });
6836 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
6837 if active_primary_range.contains(&selection.head()) {
6838 *active_primary_range.end()
6839 } else {
6840 selection.head()
6841 }
6842 } else {
6843 selection.head()
6844 };
6845
6846 loop {
6847 let mut diagnostics = if direction == Direction::Prev {
6848 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
6849 } else {
6850 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
6851 };
6852 let group = diagnostics.find_map(|entry| {
6853 if entry.diagnostic.is_primary
6854 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
6855 && !entry.range.is_empty()
6856 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
6857 && !entry.range.contains(&search_start)
6858 {
6859 Some((entry.range, entry.diagnostic.group_id))
6860 } else {
6861 None
6862 }
6863 });
6864
6865 if let Some((primary_range, group_id)) = group {
6866 if self.activate_diagnostics(group_id, cx) {
6867 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
6868 s.select(vec![Selection {
6869 id: selection.id,
6870 start: primary_range.start,
6871 end: primary_range.start,
6872 reversed: false,
6873 goal: SelectionGoal::None,
6874 }]);
6875 });
6876 }
6877 break;
6878 } else {
6879 // Cycle around to the start of the buffer, potentially moving back to the start of
6880 // the currently active diagnostic.
6881 active_primary_range.take();
6882 if direction == Direction::Prev {
6883 if search_start == buffer.len() {
6884 break;
6885 } else {
6886 search_start = buffer.len();
6887 }
6888 } else if search_start == 0 {
6889 break;
6890 } else {
6891 search_start = 0;
6892 }
6893 }
6894 }
6895 }
6896
6897 fn go_to_hunk(&mut self, _: &GoToHunk, cx: &mut ViewContext<Self>) {
6898 let snapshot = self
6899 .display_map
6900 .update(cx, |display_map, cx| display_map.snapshot(cx));
6901 let selection = self.selections.newest::<Point>(cx);
6902
6903 if !self.seek_in_direction(
6904 &snapshot,
6905 selection.head(),
6906 false,
6907 snapshot
6908 .buffer_snapshot
6909 .git_diff_hunks_in_range((selection.head().row + 1)..u32::MAX),
6910 cx,
6911 ) {
6912 let wrapped_point = Point::zero();
6913 self.seek_in_direction(
6914 &snapshot,
6915 wrapped_point,
6916 true,
6917 snapshot
6918 .buffer_snapshot
6919 .git_diff_hunks_in_range((wrapped_point.row + 1)..u32::MAX),
6920 cx,
6921 );
6922 }
6923 }
6924
6925 fn go_to_prev_hunk(&mut self, _: &GoToPrevHunk, cx: &mut ViewContext<Self>) {
6926 let snapshot = self
6927 .display_map
6928 .update(cx, |display_map, cx| display_map.snapshot(cx));
6929 let selection = self.selections.newest::<Point>(cx);
6930
6931 if !self.seek_in_direction(
6932 &snapshot,
6933 selection.head(),
6934 false,
6935 snapshot
6936 .buffer_snapshot
6937 .git_diff_hunks_in_range_rev(0..selection.head().row),
6938 cx,
6939 ) {
6940 let wrapped_point = snapshot.buffer_snapshot.max_point();
6941 self.seek_in_direction(
6942 &snapshot,
6943 wrapped_point,
6944 true,
6945 snapshot
6946 .buffer_snapshot
6947 .git_diff_hunks_in_range_rev(0..wrapped_point.row),
6948 cx,
6949 );
6950 }
6951 }
6952
6953 fn seek_in_direction(
6954 &mut self,
6955 snapshot: &DisplaySnapshot,
6956 initial_point: Point,
6957 is_wrapped: bool,
6958 hunks: impl Iterator<Item = DiffHunk<u32>>,
6959 cx: &mut ViewContext<Editor>,
6960 ) -> bool {
6961 let display_point = initial_point.to_display_point(snapshot);
6962 let mut hunks = hunks
6963 .map(|hunk| diff_hunk_to_display(hunk, &snapshot))
6964 .filter(|hunk| {
6965 if is_wrapped {
6966 true
6967 } else {
6968 !hunk.contains_display_row(display_point.row())
6969 }
6970 })
6971 .dedup();
6972
6973 if let Some(hunk) = hunks.next() {
6974 self.change_selections(Some(Autoscroll::fit()), cx, |s| {
6975 let row = hunk.start_display_row();
6976 let point = DisplayPoint::new(row, 0);
6977 s.select_display_ranges([point..point]);
6978 });
6979
6980 true
6981 } else {
6982 false
6983 }
6984 }
6985
6986 pub fn go_to_definition(&mut self, _: &GoToDefinition, cx: &mut ViewContext<Self>) {
6987 self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, cx);
6988 }
6989
6990 pub fn go_to_type_definition(&mut self, _: &GoToTypeDefinition, cx: &mut ViewContext<Self>) {
6991 self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, cx);
6992 }
6993
6994 pub fn go_to_definition_split(&mut self, _: &GoToDefinitionSplit, cx: &mut ViewContext<Self>) {
6995 self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, cx);
6996 }
6997
6998 pub fn go_to_type_definition_split(
6999 &mut self,
7000 _: &GoToTypeDefinitionSplit,
7001 cx: &mut ViewContext<Self>,
7002 ) {
7003 self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, cx);
7004 }
7005
7006 fn go_to_definition_of_kind(
7007 &mut self,
7008 kind: GotoDefinitionKind,
7009 split: bool,
7010 cx: &mut ViewContext<Self>,
7011 ) {
7012 let Some(workspace) = self.workspace() else {
7013 return;
7014 };
7015 let buffer = self.buffer.read(cx);
7016 let head = self.selections.newest::<usize>(cx).head();
7017 let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
7018 text_anchor
7019 } else {
7020 return;
7021 };
7022
7023 let project = workspace.read(cx).project().clone();
7024 let definitions = project.update(cx, |project, cx| match kind {
7025 GotoDefinitionKind::Symbol => project.definition(&buffer, head, cx),
7026 GotoDefinitionKind::Type => project.type_definition(&buffer, head, cx),
7027 });
7028
7029 cx.spawn(|editor, mut cx| async move {
7030 let definitions = definitions.await?;
7031 editor.update(&mut cx, |editor, cx| {
7032 editor.navigate_to_definitions(
7033 definitions
7034 .into_iter()
7035 .map(GoToDefinitionLink::Text)
7036 .collect(),
7037 split,
7038 cx,
7039 );
7040 })?;
7041 Ok::<(), anyhow::Error>(())
7042 })
7043 .detach_and_log_err(cx);
7044 }
7045
7046 pub fn navigate_to_definitions(
7047 &mut self,
7048 mut definitions: Vec<GoToDefinitionLink>,
7049 split: bool,
7050 cx: &mut ViewContext<Editor>,
7051 ) {
7052 let Some(workspace) = self.workspace() else {
7053 return;
7054 };
7055 let pane = workspace.read(cx).active_pane().clone();
7056 // If there is one definition, just open it directly
7057 if definitions.len() == 1 {
7058 let definition = definitions.pop().unwrap();
7059 let target_task = match definition {
7060 GoToDefinitionLink::Text(link) => Task::Ready(Some(Ok(Some(link.target)))),
7061 GoToDefinitionLink::InlayHint(lsp_location, server_id) => {
7062 self.compute_target_location(lsp_location, server_id, cx)
7063 }
7064 };
7065 cx.spawn(|editor, mut cx| async move {
7066 let target = target_task.await.context("target resolution task")?;
7067 if let Some(target) = target {
7068 editor.update(&mut cx, |editor, cx| {
7069 let range = target.range.to_offset(target.buffer.read(cx));
7070 let range = editor.range_for_match(&range);
7071 if Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref() {
7072 editor.change_selections(Some(Autoscroll::fit()), cx, |s| {
7073 s.select_ranges([range]);
7074 });
7075 } else {
7076 cx.window_context().defer(move |cx| {
7077 let target_editor: View<Self> =
7078 workspace.update(cx, |workspace, cx| {
7079 if split {
7080 workspace.split_project_item(target.buffer.clone(), cx)
7081 } else {
7082 workspace.open_project_item(target.buffer.clone(), cx)
7083 }
7084 });
7085 target_editor.update(cx, |target_editor, cx| {
7086 // When selecting a definition in a different buffer, disable the nav history
7087 // to avoid creating a history entry at the previous cursor location.
7088 pane.update(cx, |pane, _| pane.disable_history());
7089 target_editor.change_selections(
7090 Some(Autoscroll::fit()),
7091 cx,
7092 |s| {
7093 s.select_ranges([range]);
7094 },
7095 );
7096 pane.update(cx, |pane, _| pane.enable_history());
7097 });
7098 });
7099 }
7100 })
7101 } else {
7102 Ok(())
7103 }
7104 })
7105 .detach_and_log_err(cx);
7106 } else if !definitions.is_empty() {
7107 let replica_id = self.replica_id(cx);
7108 cx.spawn(|editor, mut cx| async move {
7109 let (title, location_tasks) = editor
7110 .update(&mut cx, |editor, cx| {
7111 let title = definitions
7112 .iter()
7113 .find_map(|definition| match definition {
7114 GoToDefinitionLink::Text(link) => {
7115 link.origin.as_ref().map(|origin| {
7116 let buffer = origin.buffer.read(cx);
7117 format!(
7118 "Definitions for {}",
7119 buffer
7120 .text_for_range(origin.range.clone())
7121 .collect::<String>()
7122 )
7123 })
7124 }
7125 GoToDefinitionLink::InlayHint(_, _) => None,
7126 })
7127 .unwrap_or("Definitions".to_string());
7128 let location_tasks = definitions
7129 .into_iter()
7130 .map(|definition| match definition {
7131 GoToDefinitionLink::Text(link) => {
7132 Task::Ready(Some(Ok(Some(link.target))))
7133 }
7134 GoToDefinitionLink::InlayHint(lsp_location, server_id) => {
7135 editor.compute_target_location(lsp_location, server_id, cx)
7136 }
7137 })
7138 .collect::<Vec<_>>();
7139 (title, location_tasks)
7140 })
7141 .context("location tasks preparation")?;
7142
7143 let locations = futures::future::join_all(location_tasks)
7144 .await
7145 .into_iter()
7146 .filter_map(|location| location.transpose())
7147 .collect::<Result<_>>()
7148 .context("location tasks")?;
7149 workspace
7150 .update(&mut cx, |workspace, cx| {
7151 Self::open_locations_in_multibuffer(
7152 workspace, locations, replica_id, title, split, cx,
7153 )
7154 })
7155 .ok();
7156
7157 anyhow::Ok(())
7158 })
7159 .detach_and_log_err(cx);
7160 }
7161 }
7162
7163 fn compute_target_location(
7164 &self,
7165 lsp_location: lsp::Location,
7166 server_id: LanguageServerId,
7167 cx: &mut ViewContext<Editor>,
7168 ) -> Task<anyhow::Result<Option<Location>>> {
7169 let Some(project) = self.project.clone() else {
7170 return Task::Ready(Some(Ok(None)));
7171 };
7172
7173 cx.spawn(move |editor, mut cx| async move {
7174 let location_task = editor.update(&mut cx, |editor, cx| {
7175 project.update(cx, |project, cx| {
7176 let language_server_name =
7177 editor.buffer.read(cx).as_singleton().and_then(|buffer| {
7178 project
7179 .language_server_for_buffer(buffer.read(cx), server_id, cx)
7180 .map(|(_, lsp_adapter)| {
7181 LanguageServerName(Arc::from(lsp_adapter.name()))
7182 })
7183 });
7184 language_server_name.map(|language_server_name| {
7185 project.open_local_buffer_via_lsp(
7186 lsp_location.uri.clone(),
7187 server_id,
7188 language_server_name,
7189 cx,
7190 )
7191 })
7192 })
7193 })?;
7194 let location = match location_task {
7195 Some(task) => Some({
7196 let target_buffer_handle = task.await.context("open local buffer")?;
7197 let range = target_buffer_handle.update(&mut cx, |target_buffer, _| {
7198 let target_start = target_buffer
7199 .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
7200 let target_end = target_buffer
7201 .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
7202 target_buffer.anchor_after(target_start)
7203 ..target_buffer.anchor_before(target_end)
7204 })?;
7205 Location {
7206 buffer: target_buffer_handle,
7207 range,
7208 }
7209 }),
7210 None => None,
7211 };
7212 Ok(location)
7213 })
7214 }
7215
7216 pub fn find_all_references(
7217 &mut self,
7218 _: &FindAllReferences,
7219 cx: &mut ViewContext<Self>,
7220 ) -> Option<Task<Result<()>>> {
7221 let buffer = self.buffer.read(cx);
7222 let head = self.selections.newest::<usize>(cx).head();
7223 let (buffer, head) = buffer.text_anchor_for_position(head, cx)?;
7224 let replica_id = self.replica_id(cx);
7225
7226 let workspace = self.workspace()?;
7227 let project = workspace.read(cx).project().clone();
7228 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
7229 Some(cx.spawn(|_, mut cx| async move {
7230 let locations = references.await?;
7231 if locations.is_empty() {
7232 return Ok(());
7233 }
7234
7235 workspace.update(&mut cx, |workspace, cx| {
7236 let title = locations
7237 .first()
7238 .as_ref()
7239 .map(|location| {
7240 let buffer = location.buffer.read(cx);
7241 format!(
7242 "References to `{}`",
7243 buffer
7244 .text_for_range(location.range.clone())
7245 .collect::<String>()
7246 )
7247 })
7248 .unwrap();
7249 Self::open_locations_in_multibuffer(
7250 workspace, locations, replica_id, title, false, cx,
7251 );
7252 })?;
7253
7254 Ok(())
7255 }))
7256 }
7257
7258 /// Opens a multibuffer with the given project locations in it
7259 pub fn open_locations_in_multibuffer(
7260 workspace: &mut Workspace,
7261 mut locations: Vec<Location>,
7262 replica_id: ReplicaId,
7263 title: String,
7264 split: bool,
7265 cx: &mut ViewContext<Workspace>,
7266 ) {
7267 // If there are multiple definitions, open them in a multibuffer
7268 locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
7269 let mut locations = locations.into_iter().peekable();
7270 let mut ranges_to_highlight = Vec::new();
7271 let capability = workspace.project().read(cx).capability();
7272
7273 let excerpt_buffer = cx.new_model(|cx| {
7274 let mut multibuffer = MultiBuffer::new(replica_id, capability);
7275 while let Some(location) = locations.next() {
7276 let buffer = location.buffer.read(cx);
7277 let mut ranges_for_buffer = Vec::new();
7278 let range = location.range.to_offset(buffer);
7279 ranges_for_buffer.push(range.clone());
7280
7281 while let Some(next_location) = locations.peek() {
7282 if next_location.buffer == location.buffer {
7283 ranges_for_buffer.push(next_location.range.to_offset(buffer));
7284 locations.next();
7285 } else {
7286 break;
7287 }
7288 }
7289
7290 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
7291 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
7292 location.buffer.clone(),
7293 ranges_for_buffer,
7294 1,
7295 cx,
7296 ))
7297 }
7298
7299 multibuffer.with_title(title)
7300 });
7301
7302 let editor = cx.new_view(|cx| {
7303 Editor::for_multibuffer(excerpt_buffer, Some(workspace.project().clone()), cx)
7304 });
7305 editor.update(cx, |editor, cx| {
7306 editor.highlight_background::<Self>(
7307 ranges_to_highlight,
7308 |theme| theme.editor_highlighted_line_background,
7309 cx,
7310 );
7311 });
7312 if split {
7313 workspace.split_item(SplitDirection::Right, Box::new(editor), cx);
7314 } else {
7315 workspace.add_item(Box::new(editor), cx);
7316 }
7317 }
7318
7319 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
7320 use language::ToOffset as _;
7321
7322 let project = self.project.clone()?;
7323 let selection = self.selections.newest_anchor().clone();
7324 let (cursor_buffer, cursor_buffer_position) = self
7325 .buffer
7326 .read(cx)
7327 .text_anchor_for_position(selection.head(), cx)?;
7328 let (tail_buffer, _) = self
7329 .buffer
7330 .read(cx)
7331 .text_anchor_for_position(selection.tail(), cx)?;
7332 if tail_buffer != cursor_buffer {
7333 return None;
7334 }
7335
7336 let snapshot = cursor_buffer.read(cx).snapshot();
7337 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
7338 let prepare_rename = project.update(cx, |project, cx| {
7339 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
7340 });
7341
7342 Some(cx.spawn(|this, mut cx| async move {
7343 let rename_range = if let Some(range) = prepare_rename.await? {
7344 Some(range)
7345 } else {
7346 this.update(&mut cx, |this, cx| {
7347 let buffer = this.buffer.read(cx).snapshot(cx);
7348 let mut buffer_highlights = this
7349 .document_highlights_for_position(selection.head(), &buffer)
7350 .filter(|highlight| {
7351 highlight.start.excerpt_id == selection.head().excerpt_id
7352 && highlight.end.excerpt_id == selection.head().excerpt_id
7353 });
7354 buffer_highlights
7355 .next()
7356 .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
7357 })?
7358 };
7359 if let Some(rename_range) = rename_range {
7360 let rename_buffer_range = rename_range.to_offset(&snapshot);
7361 let cursor_offset_in_rename_range =
7362 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
7363
7364 this.update(&mut cx, |this, cx| {
7365 this.take_rename(false, cx);
7366 let buffer = this.buffer.read(cx).read(cx);
7367 let cursor_offset = selection.head().to_offset(&buffer);
7368 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
7369 let rename_end = rename_start + rename_buffer_range.len();
7370 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
7371 let mut old_highlight_id = None;
7372 let old_name: Arc<str> = buffer
7373 .chunks(rename_start..rename_end, true)
7374 .map(|chunk| {
7375 if old_highlight_id.is_none() {
7376 old_highlight_id = chunk.syntax_highlight_id;
7377 }
7378 chunk.text
7379 })
7380 .collect::<String>()
7381 .into();
7382
7383 drop(buffer);
7384
7385 // Position the selection in the rename editor so that it matches the current selection.
7386 this.show_local_selections = false;
7387 let rename_editor = cx.new_view(|cx| {
7388 let mut editor = Editor::single_line(cx);
7389 editor.buffer.update(cx, |buffer, cx| {
7390 buffer.edit([(0..0, old_name.clone())], None, cx)
7391 });
7392 editor.select_all(&SelectAll, cx);
7393 editor
7394 });
7395
7396 let ranges = this
7397 .clear_background_highlights::<DocumentHighlightWrite>(cx)
7398 .into_iter()
7399 .flat_map(|(_, ranges)| ranges.into_iter())
7400 .chain(
7401 this.clear_background_highlights::<DocumentHighlightRead>(cx)
7402 .into_iter()
7403 .flat_map(|(_, ranges)| ranges.into_iter()),
7404 )
7405 .collect();
7406
7407 this.highlight_text::<Rename>(
7408 ranges,
7409 HighlightStyle {
7410 fade_out: Some(0.6),
7411 ..Default::default()
7412 },
7413 cx,
7414 );
7415 let rename_focus_handle = rename_editor.focus_handle(cx);
7416 cx.focus(&rename_focus_handle);
7417 let block_id = this.insert_blocks(
7418 [BlockProperties {
7419 style: BlockStyle::Flex,
7420 position: range.start.clone(),
7421 height: 1,
7422 render: Arc::new({
7423 let rename_editor = rename_editor.clone();
7424 move |cx: &mut BlockContext| {
7425 let mut text_style = cx.editor_style.text.clone();
7426 if let Some(highlight_style) = old_highlight_id
7427 .and_then(|h| h.style(&cx.editor_style.syntax))
7428 {
7429 text_style = text_style.highlight(highlight_style);
7430 }
7431 div()
7432 .pl(cx.anchor_x)
7433 .child(EditorElement::new(
7434 &rename_editor,
7435 EditorStyle {
7436 background: cx.theme().system().transparent,
7437 local_player: cx.editor_style.local_player,
7438 text: text_style,
7439 scrollbar_width: cx.editor_style.scrollbar_width,
7440 syntax: cx.editor_style.syntax.clone(),
7441 status: cx.editor_style.status.clone(),
7442 inlays_style: HighlightStyle {
7443 color: Some(cx.theme().status().hint),
7444 font_weight: Some(FontWeight::BOLD),
7445 ..HighlightStyle::default()
7446 },
7447 suggestions_style: HighlightStyle {
7448 color: Some(cx.theme().status().predictive),
7449 ..HighlightStyle::default()
7450 },
7451 },
7452 ))
7453 .into_any_element()
7454 }
7455 }),
7456 disposition: BlockDisposition::Below,
7457 }],
7458 Some(Autoscroll::fit()),
7459 cx,
7460 )[0];
7461 this.pending_rename = Some(RenameState {
7462 range,
7463 old_name,
7464 editor: rename_editor,
7465 block_id,
7466 });
7467 })?;
7468 }
7469
7470 Ok(())
7471 }))
7472 }
7473
7474 pub fn confirm_rename(
7475 &mut self,
7476 _: &ConfirmRename,
7477 cx: &mut ViewContext<Self>,
7478 ) -> Option<Task<Result<()>>> {
7479 let rename = self.take_rename(false, cx)?;
7480 let workspace = self.workspace()?;
7481 let (start_buffer, start) = self
7482 .buffer
7483 .read(cx)
7484 .text_anchor_for_position(rename.range.start.clone(), cx)?;
7485 let (end_buffer, end) = self
7486 .buffer
7487 .read(cx)
7488 .text_anchor_for_position(rename.range.end.clone(), cx)?;
7489 if start_buffer != end_buffer {
7490 return None;
7491 }
7492
7493 let buffer = start_buffer;
7494 let range = start..end;
7495 let old_name = rename.old_name;
7496 let new_name = rename.editor.read(cx).text(cx);
7497
7498 let rename = workspace
7499 .read(cx)
7500 .project()
7501 .clone()
7502 .update(cx, |project, cx| {
7503 project.perform_rename(buffer.clone(), range.start, new_name.clone(), true, cx)
7504 });
7505 let workspace = workspace.downgrade();
7506
7507 Some(cx.spawn(|editor, mut cx| async move {
7508 let project_transaction = rename.await?;
7509 Self::open_project_transaction(
7510 &editor,
7511 workspace,
7512 project_transaction,
7513 format!("Rename: {} → {}", old_name, new_name),
7514 cx.clone(),
7515 )
7516 .await?;
7517
7518 editor.update(&mut cx, |editor, cx| {
7519 editor.refresh_document_highlights(cx);
7520 })?;
7521 Ok(())
7522 }))
7523 }
7524
7525 fn take_rename(
7526 &mut self,
7527 moving_cursor: bool,
7528 cx: &mut ViewContext<Self>,
7529 ) -> Option<RenameState> {
7530 let rename = self.pending_rename.take()?;
7531 if rename.editor.focus_handle(cx).is_focused(cx) {
7532 cx.focus(&self.focus_handle);
7533 }
7534
7535 self.remove_blocks(
7536 [rename.block_id].into_iter().collect(),
7537 Some(Autoscroll::fit()),
7538 cx,
7539 );
7540 self.clear_highlights::<Rename>(cx);
7541 self.show_local_selections = true;
7542
7543 if moving_cursor {
7544 let rename_editor = rename.editor.read(cx);
7545 let cursor_in_rename_editor = rename_editor.selections.newest::<usize>(cx).head();
7546
7547 // Update the selection to match the position of the selection inside
7548 // the rename editor.
7549 let snapshot = self.buffer.read(cx).read(cx);
7550 let rename_range = rename.range.to_offset(&snapshot);
7551 let cursor_in_editor = snapshot
7552 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
7553 .min(rename_range.end);
7554 drop(snapshot);
7555
7556 self.change_selections(None, cx, |s| {
7557 s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
7558 });
7559 } else {
7560 self.refresh_document_highlights(cx);
7561 }
7562
7563 Some(rename)
7564 }
7565
7566 #[cfg(any(test, feature = "test-support"))]
7567 pub fn pending_rename(&self) -> Option<&RenameState> {
7568 self.pending_rename.as_ref()
7569 }
7570
7571 fn format(&mut self, _: &Format, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
7572 let project = match &self.project {
7573 Some(project) => project.clone(),
7574 None => return None,
7575 };
7576
7577 Some(self.perform_format(project, FormatTrigger::Manual, cx))
7578 }
7579
7580 fn perform_format(
7581 &mut self,
7582 project: Model<Project>,
7583 trigger: FormatTrigger,
7584 cx: &mut ViewContext<Self>,
7585 ) -> Task<Result<()>> {
7586 let buffer = self.buffer().clone();
7587 let buffers = buffer.read(cx).all_buffers();
7588
7589 let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
7590 let format = project.update(cx, |project, cx| project.format(buffers, true, trigger, cx));
7591
7592 cx.spawn(|_, mut cx| async move {
7593 let transaction = futures::select_biased! {
7594 _ = timeout => {
7595 log::warn!("timed out waiting for formatting");
7596 None
7597 }
7598 transaction = format.log_err().fuse() => transaction,
7599 };
7600
7601 buffer
7602 .update(&mut cx, |buffer, cx| {
7603 if let Some(transaction) = transaction {
7604 if !buffer.is_singleton() {
7605 buffer.push_transaction(&transaction.0, cx);
7606 }
7607 }
7608
7609 cx.notify();
7610 })
7611 .ok();
7612
7613 Ok(())
7614 })
7615 }
7616
7617 fn restart_language_server(&mut self, _: &RestartLanguageServer, cx: &mut ViewContext<Self>) {
7618 if let Some(project) = self.project.clone() {
7619 self.buffer.update(cx, |multi_buffer, cx| {
7620 project.update(cx, |project, cx| {
7621 project.restart_language_servers_for_buffers(multi_buffer.all_buffers(), cx);
7622 });
7623 })
7624 }
7625 }
7626
7627 fn show_character_palette(&mut self, _: &ShowCharacterPalette, cx: &mut ViewContext<Self>) {
7628 cx.show_character_palette();
7629 }
7630
7631 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
7632 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
7633 let buffer = self.buffer.read(cx).snapshot(cx);
7634 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
7635 let is_valid = buffer
7636 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
7637 .any(|entry| {
7638 entry.diagnostic.is_primary
7639 && !entry.range.is_empty()
7640 && entry.range.start == primary_range_start
7641 && entry.diagnostic.message == active_diagnostics.primary_message
7642 });
7643
7644 if is_valid != active_diagnostics.is_valid {
7645 active_diagnostics.is_valid = is_valid;
7646 let mut new_styles = HashMap::default();
7647 for (block_id, diagnostic) in &active_diagnostics.blocks {
7648 new_styles.insert(
7649 *block_id,
7650 diagnostic_block_renderer(diagnostic.clone(), is_valid),
7651 );
7652 }
7653 self.display_map
7654 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
7655 }
7656 }
7657 }
7658
7659 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) -> bool {
7660 self.dismiss_diagnostics(cx);
7661 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
7662 let buffer = self.buffer.read(cx).snapshot(cx);
7663
7664 let mut primary_range = None;
7665 let mut primary_message = None;
7666 let mut group_end = Point::zero();
7667 let diagnostic_group = buffer
7668 .diagnostic_group::<Point>(group_id)
7669 .map(|entry| {
7670 if entry.range.end > group_end {
7671 group_end = entry.range.end;
7672 }
7673 if entry.diagnostic.is_primary {
7674 primary_range = Some(entry.range.clone());
7675 primary_message = Some(entry.diagnostic.message.clone());
7676 }
7677 entry
7678 })
7679 .collect::<Vec<_>>();
7680 let primary_range = primary_range?;
7681 let primary_message = primary_message?;
7682 let primary_range =
7683 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
7684
7685 let blocks = display_map
7686 .insert_blocks(
7687 diagnostic_group.iter().map(|entry| {
7688 let diagnostic = entry.diagnostic.clone();
7689 let message_height = diagnostic.message.lines().count() as u8;
7690 BlockProperties {
7691 style: BlockStyle::Fixed,
7692 position: buffer.anchor_after(entry.range.start),
7693 height: message_height,
7694 render: diagnostic_block_renderer(diagnostic, true),
7695 disposition: BlockDisposition::Below,
7696 }
7697 }),
7698 cx,
7699 )
7700 .into_iter()
7701 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
7702 .collect();
7703
7704 Some(ActiveDiagnosticGroup {
7705 primary_range,
7706 primary_message,
7707 blocks,
7708 is_valid: true,
7709 })
7710 });
7711 self.active_diagnostics.is_some()
7712 }
7713
7714 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
7715 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
7716 self.display_map.update(cx, |display_map, cx| {
7717 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
7718 });
7719 cx.notify();
7720 }
7721 }
7722
7723 pub fn set_selections_from_remote(
7724 &mut self,
7725 selections: Vec<Selection<Anchor>>,
7726 pending_selection: Option<Selection<Anchor>>,
7727 cx: &mut ViewContext<Self>,
7728 ) {
7729 let old_cursor_position = self.selections.newest_anchor().head();
7730 self.selections.change_with(cx, |s| {
7731 s.select_anchors(selections);
7732 if let Some(pending_selection) = pending_selection {
7733 s.set_pending(pending_selection, SelectMode::Character);
7734 } else {
7735 s.clear_pending();
7736 }
7737 });
7738 self.selections_did_change(false, &old_cursor_position, cx);
7739 }
7740
7741 fn push_to_selection_history(&mut self) {
7742 self.selection_history.push(SelectionHistoryEntry {
7743 selections: self.selections.disjoint_anchors(),
7744 select_next_state: self.select_next_state.clone(),
7745 select_prev_state: self.select_prev_state.clone(),
7746 add_selections_state: self.add_selections_state.clone(),
7747 });
7748 }
7749
7750 pub fn transact(
7751 &mut self,
7752 cx: &mut ViewContext<Self>,
7753 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
7754 ) -> Option<TransactionId> {
7755 self.start_transaction_at(Instant::now(), cx);
7756 update(self, cx);
7757 self.end_transaction_at(Instant::now(), cx)
7758 }
7759
7760 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
7761 self.end_selection(cx);
7762 if let Some(tx_id) = self
7763 .buffer
7764 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
7765 {
7766 self.selection_history
7767 .insert_transaction(tx_id, self.selections.disjoint_anchors());
7768 }
7769 }
7770
7771 fn end_transaction_at(
7772 &mut self,
7773 now: Instant,
7774 cx: &mut ViewContext<Self>,
7775 ) -> Option<TransactionId> {
7776 if let Some(tx_id) = self
7777 .buffer
7778 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
7779 {
7780 if let Some((_, end_selections)) = self.selection_history.transaction_mut(tx_id) {
7781 *end_selections = Some(self.selections.disjoint_anchors());
7782 } else {
7783 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
7784 }
7785
7786 cx.emit(EditorEvent::Edited);
7787 Some(tx_id)
7788 } else {
7789 None
7790 }
7791 }
7792
7793 pub fn fold(&mut self, _: &actions::Fold, cx: &mut ViewContext<Self>) {
7794 let mut fold_ranges = Vec::new();
7795
7796 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
7797
7798 let selections = self.selections.all_adjusted(cx);
7799 for selection in selections {
7800 let range = selection.range().sorted();
7801 let buffer_start_row = range.start.row;
7802
7803 for row in (0..=range.end.row).rev() {
7804 let fold_range = display_map.foldable_range(row);
7805
7806 if let Some(fold_range) = fold_range {
7807 if fold_range.end.row >= buffer_start_row {
7808 fold_ranges.push(fold_range);
7809 if row <= range.start.row {
7810 break;
7811 }
7812 }
7813 }
7814 }
7815 }
7816
7817 self.fold_ranges(fold_ranges, true, cx);
7818 }
7819
7820 pub fn fold_at(&mut self, fold_at: &FoldAt, cx: &mut ViewContext<Self>) {
7821 let buffer_row = fold_at.buffer_row;
7822 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
7823
7824 if let Some(fold_range) = display_map.foldable_range(buffer_row) {
7825 let autoscroll = self
7826 .selections
7827 .all::<Point>(cx)
7828 .iter()
7829 .any(|selection| fold_range.overlaps(&selection.range()));
7830
7831 self.fold_ranges(std::iter::once(fold_range), autoscroll, cx);
7832 }
7833 }
7834
7835 pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
7836 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
7837 let buffer = &display_map.buffer_snapshot;
7838 let selections = self.selections.all::<Point>(cx);
7839 let ranges = selections
7840 .iter()
7841 .map(|s| {
7842 let range = s.display_range(&display_map).sorted();
7843 let mut start = range.start.to_point(&display_map);
7844 let mut end = range.end.to_point(&display_map);
7845 start.column = 0;
7846 end.column = buffer.line_len(end.row);
7847 start..end
7848 })
7849 .collect::<Vec<_>>();
7850
7851 self.unfold_ranges(ranges, true, true, cx);
7852 }
7853
7854 pub fn unfold_at(&mut self, unfold_at: &UnfoldAt, cx: &mut ViewContext<Self>) {
7855 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
7856
7857 let intersection_range = Point::new(unfold_at.buffer_row, 0)
7858 ..Point::new(
7859 unfold_at.buffer_row,
7860 display_map.buffer_snapshot.line_len(unfold_at.buffer_row),
7861 );
7862
7863 let autoscroll = self
7864 .selections
7865 .all::<Point>(cx)
7866 .iter()
7867 .any(|selection| selection.range().overlaps(&intersection_range));
7868
7869 self.unfold_ranges(std::iter::once(intersection_range), true, autoscroll, cx)
7870 }
7871
7872 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
7873 let selections = self.selections.all::<Point>(cx);
7874 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
7875 let line_mode = self.selections.line_mode;
7876 let ranges = selections.into_iter().map(|s| {
7877 if line_mode {
7878 let start = Point::new(s.start.row, 0);
7879 let end = Point::new(s.end.row, display_map.buffer_snapshot.line_len(s.end.row));
7880 start..end
7881 } else {
7882 s.start..s.end
7883 }
7884 });
7885 self.fold_ranges(ranges, true, cx);
7886 }
7887
7888 pub fn fold_ranges<T: ToOffset + Clone>(
7889 &mut self,
7890 ranges: impl IntoIterator<Item = Range<T>>,
7891 auto_scroll: bool,
7892 cx: &mut ViewContext<Self>,
7893 ) {
7894 let mut ranges = ranges.into_iter().peekable();
7895 if ranges.peek().is_some() {
7896 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
7897
7898 if auto_scroll {
7899 self.request_autoscroll(Autoscroll::fit(), cx);
7900 }
7901
7902 cx.notify();
7903 }
7904 }
7905
7906 pub fn unfold_ranges<T: ToOffset + Clone>(
7907 &mut self,
7908 ranges: impl IntoIterator<Item = Range<T>>,
7909 inclusive: bool,
7910 auto_scroll: bool,
7911 cx: &mut ViewContext<Self>,
7912 ) {
7913 let mut ranges = ranges.into_iter().peekable();
7914 if ranges.peek().is_some() {
7915 self.display_map
7916 .update(cx, |map, cx| map.unfold(ranges, inclusive, cx));
7917 if auto_scroll {
7918 self.request_autoscroll(Autoscroll::fit(), cx);
7919 }
7920
7921 cx.notify();
7922 }
7923 }
7924
7925 pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut ViewContext<Self>) {
7926 if hovered != self.gutter_hovered {
7927 self.gutter_hovered = hovered;
7928 cx.notify();
7929 }
7930 }
7931
7932 pub fn insert_blocks(
7933 &mut self,
7934 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
7935 autoscroll: Option<Autoscroll>,
7936 cx: &mut ViewContext<Self>,
7937 ) -> Vec<BlockId> {
7938 let blocks = self
7939 .display_map
7940 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
7941 if let Some(autoscroll) = autoscroll {
7942 self.request_autoscroll(autoscroll, cx);
7943 }
7944 blocks
7945 }
7946
7947 pub fn replace_blocks(
7948 &mut self,
7949 blocks: HashMap<BlockId, RenderBlock>,
7950 autoscroll: Option<Autoscroll>,
7951 cx: &mut ViewContext<Self>,
7952 ) {
7953 self.display_map
7954 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
7955 if let Some(autoscroll) = autoscroll {
7956 self.request_autoscroll(autoscroll, cx);
7957 }
7958 }
7959
7960 pub fn remove_blocks(
7961 &mut self,
7962 block_ids: HashSet<BlockId>,
7963 autoscroll: Option<Autoscroll>,
7964 cx: &mut ViewContext<Self>,
7965 ) {
7966 self.display_map.update(cx, |display_map, cx| {
7967 display_map.remove_blocks(block_ids, cx)
7968 });
7969 if let Some(autoscroll) = autoscroll {
7970 self.request_autoscroll(autoscroll, cx);
7971 }
7972 }
7973
7974 pub fn longest_row(&self, cx: &mut AppContext) -> u32 {
7975 self.display_map
7976 .update(cx, |map, cx| map.snapshot(cx))
7977 .longest_row()
7978 }
7979
7980 pub fn max_point(&self, cx: &mut AppContext) -> DisplayPoint {
7981 self.display_map
7982 .update(cx, |map, cx| map.snapshot(cx))
7983 .max_point()
7984 }
7985
7986 pub fn text(&self, cx: &AppContext) -> String {
7987 self.buffer.read(cx).read(cx).text()
7988 }
7989
7990 pub fn text_option(&self, cx: &AppContext) -> Option<String> {
7991 let text = self.text(cx);
7992 let text = text.trim();
7993
7994 if text.is_empty() {
7995 return None;
7996 }
7997
7998 Some(text.to_string())
7999 }
8000
8001 pub fn set_text(&mut self, text: impl Into<Arc<str>>, cx: &mut ViewContext<Self>) {
8002 self.transact(cx, |this, cx| {
8003 this.buffer
8004 .read(cx)
8005 .as_singleton()
8006 .expect("you can only call set_text on editors for singleton buffers")
8007 .update(cx, |buffer, cx| buffer.set_text(text, cx));
8008 });
8009 }
8010
8011 pub fn display_text(&self, cx: &mut AppContext) -> String {
8012 self.display_map
8013 .update(cx, |map, cx| map.snapshot(cx))
8014 .text()
8015 }
8016
8017 pub fn wrap_guides(&self, cx: &AppContext) -> SmallVec<[(usize, bool); 2]> {
8018 let mut wrap_guides = smallvec::smallvec![];
8019
8020 if self.show_wrap_guides == Some(false) {
8021 return wrap_guides;
8022 }
8023
8024 let settings = self.buffer.read(cx).settings_at(0, cx);
8025 if settings.show_wrap_guides {
8026 if let SoftWrap::Column(soft_wrap) = self.soft_wrap_mode(cx) {
8027 wrap_guides.push((soft_wrap as usize, true));
8028 }
8029 wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
8030 }
8031
8032 wrap_guides
8033 }
8034
8035 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
8036 let settings = self.buffer.read(cx).settings_at(0, cx);
8037 let mode = self
8038 .soft_wrap_mode_override
8039 .unwrap_or_else(|| settings.soft_wrap);
8040 match mode {
8041 language_settings::SoftWrap::None => SoftWrap::None,
8042 language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
8043 language_settings::SoftWrap::PreferredLineLength => {
8044 SoftWrap::Column(settings.preferred_line_length)
8045 }
8046 }
8047 }
8048
8049 pub fn set_soft_wrap_mode(
8050 &mut self,
8051 mode: language_settings::SoftWrap,
8052 cx: &mut ViewContext<Self>,
8053 ) {
8054 self.soft_wrap_mode_override = Some(mode);
8055 cx.notify();
8056 }
8057
8058 pub fn set_style(&mut self, style: EditorStyle, cx: &mut ViewContext<Self>) {
8059 let rem_size = cx.rem_size();
8060 self.display_map.update(cx, |map, cx| {
8061 map.set_font(
8062 style.text.font(),
8063 style.text.font_size.to_pixels(rem_size),
8064 cx,
8065 )
8066 });
8067 self.style = Some(style);
8068 }
8069
8070 #[cfg(any(test, feature = "test-support"))]
8071 pub fn style(&self) -> Option<&EditorStyle> {
8072 self.style.as_ref()
8073 }
8074
8075 // Called by the element. This method is not designed to be called outside of the editor
8076 // element's layout code because it does not notify when rewrapping is computed synchronously.
8077 pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut AppContext) -> bool {
8078 self.display_map
8079 .update(cx, |map, cx| map.set_wrap_width(width, cx))
8080 }
8081
8082 pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, cx: &mut ViewContext<Self>) {
8083 if self.soft_wrap_mode_override.is_some() {
8084 self.soft_wrap_mode_override.take();
8085 } else {
8086 let soft_wrap = match self.soft_wrap_mode(cx) {
8087 SoftWrap::None => language_settings::SoftWrap::EditorWidth,
8088 SoftWrap::EditorWidth | SoftWrap::Column(_) => language_settings::SoftWrap::None,
8089 };
8090 self.soft_wrap_mode_override = Some(soft_wrap);
8091 }
8092 cx.notify();
8093 }
8094
8095 pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut ViewContext<Self>) {
8096 self.show_gutter = show_gutter;
8097 cx.notify();
8098 }
8099
8100 pub fn set_show_wrap_guides(&mut self, show_gutter: bool, cx: &mut ViewContext<Self>) {
8101 self.show_wrap_guides = Some(show_gutter);
8102 cx.notify();
8103 }
8104
8105 pub fn reveal_in_finder(&mut self, _: &RevealInFinder, cx: &mut ViewContext<Self>) {
8106 if let Some(buffer) = self.buffer().read(cx).as_singleton() {
8107 if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
8108 cx.reveal_path(&file.abs_path(cx));
8109 }
8110 }
8111 }
8112
8113 pub fn copy_path(&mut self, _: &CopyPath, cx: &mut ViewContext<Self>) {
8114 if let Some(buffer) = self.buffer().read(cx).as_singleton() {
8115 if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
8116 if let Some(path) = file.abs_path(cx).to_str() {
8117 cx.write_to_clipboard(ClipboardItem::new(path.to_string()));
8118 }
8119 }
8120 }
8121 }
8122
8123 pub fn copy_relative_path(&mut self, _: &CopyRelativePath, cx: &mut ViewContext<Self>) {
8124 if let Some(buffer) = self.buffer().read(cx).as_singleton() {
8125 if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
8126 if let Some(path) = file.path().to_str() {
8127 cx.write_to_clipboard(ClipboardItem::new(path.to_string()));
8128 }
8129 }
8130 }
8131 }
8132
8133 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
8134 self.highlighted_rows = rows;
8135 }
8136
8137 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
8138 self.highlighted_rows.clone()
8139 }
8140
8141 pub fn highlight_background<T: 'static>(
8142 &mut self,
8143 ranges: Vec<Range<Anchor>>,
8144 color_fetcher: fn(&ThemeColors) -> Hsla,
8145 cx: &mut ViewContext<Self>,
8146 ) {
8147 self.background_highlights
8148 .insert(TypeId::of::<T>(), (color_fetcher, ranges));
8149 cx.notify();
8150 }
8151
8152 pub(crate) fn highlight_inlay_background<T: 'static>(
8153 &mut self,
8154 ranges: Vec<InlayHighlight>,
8155 color_fetcher: fn(&ThemeColors) -> Hsla,
8156 cx: &mut ViewContext<Self>,
8157 ) {
8158 // TODO: no actual highlights happen for inlays currently, find a way to do that
8159 self.inlay_background_highlights
8160 .insert(Some(TypeId::of::<T>()), (color_fetcher, ranges));
8161 cx.notify();
8162 }
8163
8164 pub fn clear_background_highlights<T: 'static>(
8165 &mut self,
8166 cx: &mut ViewContext<Self>,
8167 ) -> Option<BackgroundHighlight> {
8168 let text_highlights = self.background_highlights.remove(&TypeId::of::<T>());
8169 let inlay_highlights = self
8170 .inlay_background_highlights
8171 .remove(&Some(TypeId::of::<T>()));
8172 if text_highlights.is_some() || inlay_highlights.is_some() {
8173 cx.notify();
8174 }
8175 text_highlights
8176 }
8177
8178 #[cfg(feature = "test-support")]
8179 pub fn all_text_background_highlights(
8180 &mut self,
8181 cx: &mut ViewContext<Self>,
8182 ) -> Vec<(Range<DisplayPoint>, Hsla)> {
8183 let snapshot = self.snapshot(cx);
8184 let buffer = &snapshot.buffer_snapshot;
8185 let start = buffer.anchor_before(0);
8186 let end = buffer.anchor_after(buffer.len());
8187 let theme = cx.theme().colors();
8188 self.background_highlights_in_range(start..end, &snapshot, theme)
8189 }
8190
8191 fn document_highlights_for_position<'a>(
8192 &'a self,
8193 position: Anchor,
8194 buffer: &'a MultiBufferSnapshot,
8195 ) -> impl 'a + Iterator<Item = &Range<Anchor>> {
8196 let read_highlights = self
8197 .background_highlights
8198 .get(&TypeId::of::<DocumentHighlightRead>())
8199 .map(|h| &h.1);
8200 let write_highlights = self
8201 .background_highlights
8202 .get(&TypeId::of::<DocumentHighlightWrite>())
8203 .map(|h| &h.1);
8204 let left_position = position.bias_left(buffer);
8205 let right_position = position.bias_right(buffer);
8206 read_highlights
8207 .into_iter()
8208 .chain(write_highlights)
8209 .flat_map(move |ranges| {
8210 let start_ix = match ranges.binary_search_by(|probe| {
8211 let cmp = probe.end.cmp(&left_position, buffer);
8212 if cmp.is_ge() {
8213 Ordering::Greater
8214 } else {
8215 Ordering::Less
8216 }
8217 }) {
8218 Ok(i) | Err(i) => i,
8219 };
8220
8221 let right_position = right_position.clone();
8222 ranges[start_ix..]
8223 .iter()
8224 .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
8225 })
8226 }
8227
8228 pub fn has_background_highlights<T: 'static>(&self) -> bool {
8229 self.background_highlights
8230 .get(&TypeId::of::<T>())
8231 .map_or(false, |(_, highlights)| !highlights.is_empty())
8232 }
8233
8234 pub fn background_highlights_in_range(
8235 &self,
8236 search_range: Range<Anchor>,
8237 display_snapshot: &DisplaySnapshot,
8238 theme: &ThemeColors,
8239 ) -> Vec<(Range<DisplayPoint>, Hsla)> {
8240 let mut results = Vec::new();
8241 for (color_fetcher, ranges) in self.background_highlights.values() {
8242 let color = color_fetcher(theme);
8243 let start_ix = match ranges.binary_search_by(|probe| {
8244 let cmp = probe
8245 .end
8246 .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
8247 if cmp.is_gt() {
8248 Ordering::Greater
8249 } else {
8250 Ordering::Less
8251 }
8252 }) {
8253 Ok(i) | Err(i) => i,
8254 };
8255 for range in &ranges[start_ix..] {
8256 if range
8257 .start
8258 .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
8259 .is_ge()
8260 {
8261 break;
8262 }
8263
8264 let start = range.start.to_display_point(&display_snapshot);
8265 let end = range.end.to_display_point(&display_snapshot);
8266 results.push((start..end, color))
8267 }
8268 }
8269 results
8270 }
8271
8272 pub fn background_highlight_row_ranges<T: 'static>(
8273 &self,
8274 search_range: Range<Anchor>,
8275 display_snapshot: &DisplaySnapshot,
8276 count: usize,
8277 ) -> Vec<RangeInclusive<DisplayPoint>> {
8278 let mut results = Vec::new();
8279 let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
8280 return vec![];
8281 };
8282
8283 let start_ix = match ranges.binary_search_by(|probe| {
8284 let cmp = probe
8285 .end
8286 .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
8287 if cmp.is_gt() {
8288 Ordering::Greater
8289 } else {
8290 Ordering::Less
8291 }
8292 }) {
8293 Ok(i) | Err(i) => i,
8294 };
8295 let mut push_region = |start: Option<Point>, end: Option<Point>| {
8296 if let (Some(start_display), Some(end_display)) = (start, end) {
8297 results.push(
8298 start_display.to_display_point(display_snapshot)
8299 ..=end_display.to_display_point(display_snapshot),
8300 );
8301 }
8302 };
8303 let mut start_row: Option<Point> = None;
8304 let mut end_row: Option<Point> = None;
8305 if ranges.len() > count {
8306 return Vec::new();
8307 }
8308 for range in &ranges[start_ix..] {
8309 if range
8310 .start
8311 .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
8312 .is_ge()
8313 {
8314 break;
8315 }
8316 let end = range.end.to_point(&display_snapshot.buffer_snapshot);
8317 if let Some(current_row) = &end_row {
8318 if end.row == current_row.row {
8319 continue;
8320 }
8321 }
8322 let start = range.start.to_point(&display_snapshot.buffer_snapshot);
8323 if start_row.is_none() {
8324 assert_eq!(end_row, None);
8325 start_row = Some(start);
8326 end_row = Some(end);
8327 continue;
8328 }
8329 if let Some(current_end) = end_row.as_mut() {
8330 if start.row > current_end.row + 1 {
8331 push_region(start_row, end_row);
8332 start_row = Some(start);
8333 end_row = Some(end);
8334 } else {
8335 // Merge two hunks.
8336 *current_end = end;
8337 }
8338 } else {
8339 unreachable!();
8340 }
8341 }
8342 // We might still have a hunk that was not rendered (if there was a search hit on the last line)
8343 push_region(start_row, end_row);
8344 results
8345 }
8346
8347 pub fn highlight_text<T: 'static>(
8348 &mut self,
8349 ranges: Vec<Range<Anchor>>,
8350 style: HighlightStyle,
8351 cx: &mut ViewContext<Self>,
8352 ) {
8353 self.display_map.update(cx, |map, _| {
8354 map.highlight_text(TypeId::of::<T>(), ranges, style)
8355 });
8356 cx.notify();
8357 }
8358
8359 pub(crate) fn highlight_inlays<T: 'static>(
8360 &mut self,
8361 highlights: Vec<InlayHighlight>,
8362 style: HighlightStyle,
8363 cx: &mut ViewContext<Self>,
8364 ) {
8365 self.display_map.update(cx, |map, _| {
8366 map.highlight_inlays(TypeId::of::<T>(), highlights, style)
8367 });
8368 cx.notify();
8369 }
8370
8371 pub fn text_highlights<'a, T: 'static>(
8372 &'a self,
8373 cx: &'a AppContext,
8374 ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
8375 self.display_map.read(cx).text_highlights(TypeId::of::<T>())
8376 }
8377
8378 pub fn clear_highlights<T: 'static>(&mut self, cx: &mut ViewContext<Self>) {
8379 let cleared = self
8380 .display_map
8381 .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
8382 if cleared {
8383 cx.notify();
8384 }
8385 }
8386
8387 pub fn show_local_cursors(&self, cx: &WindowContext) -> bool {
8388 (self.read_only(cx) || self.blink_manager.read(cx).visible())
8389 && self.focus_handle.is_focused(cx)
8390 }
8391
8392 fn on_buffer_changed(&mut self, _: Model<MultiBuffer>, cx: &mut ViewContext<Self>) {
8393 cx.notify();
8394 }
8395
8396 fn on_buffer_event(
8397 &mut self,
8398 multibuffer: Model<MultiBuffer>,
8399 event: &multi_buffer::Event,
8400 cx: &mut ViewContext<Self>,
8401 ) {
8402 match event {
8403 multi_buffer::Event::Edited {
8404 singleton_buffer_edited,
8405 } => {
8406 self.refresh_active_diagnostics(cx);
8407 self.refresh_code_actions(cx);
8408 if self.has_active_copilot_suggestion(cx) {
8409 self.update_visible_copilot_suggestion(cx);
8410 }
8411 cx.emit(EditorEvent::BufferEdited);
8412 cx.emit(SearchEvent::MatchesInvalidated);
8413
8414 if *singleton_buffer_edited {
8415 if let Some(project) = &self.project {
8416 let project = project.read(cx);
8417 let languages_affected = multibuffer
8418 .read(cx)
8419 .all_buffers()
8420 .into_iter()
8421 .filter_map(|buffer| {
8422 let buffer = buffer.read(cx);
8423 let language = buffer.language()?;
8424 if project.is_local()
8425 && project.language_servers_for_buffer(buffer, cx).count() == 0
8426 {
8427 None
8428 } else {
8429 Some(language)
8430 }
8431 })
8432 .cloned()
8433 .collect::<HashSet<_>>();
8434 if !languages_affected.is_empty() {
8435 self.refresh_inlay_hints(
8436 InlayHintRefreshReason::BufferEdited(languages_affected),
8437 cx,
8438 );
8439 }
8440 }
8441 }
8442
8443 let Some(project) = &self.project else { return };
8444 let telemetry = project.read(cx).client().telemetry().clone();
8445 telemetry.log_edit_event("editor");
8446 }
8447 multi_buffer::Event::ExcerptsAdded {
8448 buffer,
8449 predecessor,
8450 excerpts,
8451 } => {
8452 cx.emit(EditorEvent::ExcerptsAdded {
8453 buffer: buffer.clone(),
8454 predecessor: *predecessor,
8455 excerpts: excerpts.clone(),
8456 });
8457 self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
8458 }
8459 multi_buffer::Event::ExcerptsRemoved { ids } => {
8460 self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
8461 cx.emit(EditorEvent::ExcerptsRemoved { ids: ids.clone() })
8462 }
8463 multi_buffer::Event::Reparsed => cx.emit(EditorEvent::Reparsed),
8464 multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
8465 multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
8466 multi_buffer::Event::FileHandleChanged | multi_buffer::Event::Reloaded => {
8467 cx.emit(EditorEvent::TitleChanged)
8468 }
8469 multi_buffer::Event::DiffBaseChanged => cx.emit(EditorEvent::DiffBaseChanged),
8470 multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
8471 multi_buffer::Event::DiagnosticsUpdated => {
8472 self.refresh_active_diagnostics(cx);
8473 }
8474 _ => {}
8475 };
8476 }
8477
8478 fn on_display_map_changed(&mut self, _: Model<DisplayMap>, cx: &mut ViewContext<Self>) {
8479 cx.notify();
8480 }
8481
8482 fn settings_changed(&mut self, cx: &mut ViewContext<Self>) {
8483 self.refresh_copilot_suggestions(true, cx);
8484 self.refresh_inlay_hints(
8485 InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
8486 self.selections.newest_anchor().head(),
8487 &self.buffer.read(cx).snapshot(cx),
8488 cx,
8489 )),
8490 cx,
8491 );
8492 cx.notify();
8493 }
8494
8495 pub fn set_searchable(&mut self, searchable: bool) {
8496 self.searchable = searchable;
8497 }
8498
8499 pub fn searchable(&self) -> bool {
8500 self.searchable
8501 }
8502
8503 fn open_excerpts(&mut self, _: &OpenExcerpts, cx: &mut ViewContext<Self>) {
8504 let buffer = self.buffer.read(cx);
8505 if buffer.is_singleton() {
8506 cx.propagate();
8507 return;
8508 }
8509
8510 let Some(workspace) = self.workspace() else {
8511 cx.propagate();
8512 return;
8513 };
8514
8515 let mut new_selections_by_buffer = HashMap::default();
8516 for selection in self.selections.all::<usize>(cx) {
8517 for (buffer, mut range, _) in
8518 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
8519 {
8520 if selection.reversed {
8521 mem::swap(&mut range.start, &mut range.end);
8522 }
8523 new_selections_by_buffer
8524 .entry(buffer)
8525 .or_insert(Vec::new())
8526 .push(range)
8527 }
8528 }
8529
8530 self.push_to_nav_history(self.selections.newest_anchor().head(), None, cx);
8531
8532 // We defer the pane interaction because we ourselves are a workspace item
8533 // and activating a new item causes the pane to call a method on us reentrantly,
8534 // which panics if we're on the stack.
8535 cx.window_context().defer(move |cx| {
8536 workspace.update(cx, |workspace, cx| {
8537 let pane = workspace.active_pane().clone();
8538 pane.update(cx, |pane, _| pane.disable_history());
8539
8540 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
8541 let editor = workspace.open_project_item::<Self>(buffer, cx);
8542 editor.update(cx, |editor, cx| {
8543 editor.change_selections(Some(Autoscroll::newest()), cx, |s| {
8544 s.select_ranges(ranges);
8545 });
8546 });
8547 }
8548
8549 pane.update(cx, |pane, _| pane.enable_history());
8550 })
8551 });
8552 }
8553
8554 fn jump(
8555 &mut self,
8556 path: ProjectPath,
8557 position: Point,
8558 anchor: language::Anchor,
8559 cx: &mut ViewContext<Self>,
8560 ) {
8561 let workspace = self.workspace();
8562 cx.spawn(|_, mut cx| async move {
8563 let workspace = workspace.ok_or_else(|| anyhow!("cannot jump without workspace"))?;
8564 let editor = workspace.update(&mut cx, |workspace, cx| {
8565 workspace.open_path(path, None, true, cx)
8566 })?;
8567 let editor = editor
8568 .await?
8569 .downcast::<Editor>()
8570 .ok_or_else(|| anyhow!("opened item was not an editor"))?
8571 .downgrade();
8572 editor.update(&mut cx, |editor, cx| {
8573 let buffer = editor
8574 .buffer()
8575 .read(cx)
8576 .as_singleton()
8577 .ok_or_else(|| anyhow!("cannot jump in a multi-buffer"))?;
8578 let buffer = buffer.read(cx);
8579 let cursor = if buffer.can_resolve(&anchor) {
8580 language::ToPoint::to_point(&anchor, buffer)
8581 } else {
8582 buffer.clip_point(position, Bias::Left)
8583 };
8584
8585 let nav_history = editor.nav_history.take();
8586 editor.change_selections(Some(Autoscroll::newest()), cx, |s| {
8587 s.select_ranges([cursor..cursor]);
8588 });
8589 editor.nav_history = nav_history;
8590
8591 anyhow::Ok(())
8592 })??;
8593
8594 anyhow::Ok(())
8595 })
8596 .detach_and_log_err(cx);
8597 }
8598
8599 fn marked_text_ranges(&self, cx: &AppContext) -> Option<Vec<Range<OffsetUtf16>>> {
8600 let snapshot = self.buffer.read(cx).read(cx);
8601 let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
8602 Some(
8603 ranges
8604 .iter()
8605 .map(move |range| {
8606 range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
8607 })
8608 .collect(),
8609 )
8610 }
8611
8612 fn selection_replacement_ranges(
8613 &self,
8614 range: Range<OffsetUtf16>,
8615 cx: &AppContext,
8616 ) -> Vec<Range<OffsetUtf16>> {
8617 let selections = self.selections.all::<OffsetUtf16>(cx);
8618 let newest_selection = selections
8619 .iter()
8620 .max_by_key(|selection| selection.id)
8621 .unwrap();
8622 let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
8623 let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
8624 let snapshot = self.buffer.read(cx).read(cx);
8625 selections
8626 .into_iter()
8627 .map(|mut selection| {
8628 selection.start.0 =
8629 (selection.start.0 as isize).saturating_add(start_delta) as usize;
8630 selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
8631 snapshot.clip_offset_utf16(selection.start, Bias::Left)
8632 ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
8633 })
8634 .collect()
8635 }
8636
8637 fn report_copilot_event(
8638 &self,
8639 suggestion_id: Option<String>,
8640 suggestion_accepted: bool,
8641 cx: &AppContext,
8642 ) {
8643 let Some(project) = &self.project else { return };
8644
8645 // If None, we are either getting suggestions in a new, unsaved file, or in a file without an extension
8646 let file_extension = self
8647 .buffer
8648 .read(cx)
8649 .as_singleton()
8650 .and_then(|b| b.read(cx).file())
8651 .and_then(|file| Path::new(file.file_name(cx)).extension())
8652 .and_then(|e| e.to_str())
8653 .map(|a| a.to_string());
8654
8655 let telemetry = project.read(cx).client().telemetry().clone();
8656
8657 telemetry.report_copilot_event(suggestion_id, suggestion_accepted, file_extension)
8658 }
8659
8660 #[cfg(any(test, feature = "test-support"))]
8661 fn report_editor_event(
8662 &self,
8663 _operation: &'static str,
8664 _file_extension: Option<String>,
8665 _cx: &AppContext,
8666 ) {
8667 }
8668
8669 #[cfg(not(any(test, feature = "test-support")))]
8670 fn report_editor_event(
8671 &self,
8672 operation: &'static str,
8673 file_extension: Option<String>,
8674 cx: &AppContext,
8675 ) {
8676 let Some(project) = &self.project else { return };
8677
8678 // If None, we are in a file without an extension
8679 let file = self
8680 .buffer
8681 .read(cx)
8682 .as_singleton()
8683 .and_then(|b| b.read(cx).file());
8684 let file_extension = file_extension.or(file
8685 .as_ref()
8686 .and_then(|file| Path::new(file.file_name(cx)).extension())
8687 .and_then(|e| e.to_str())
8688 .map(|a| a.to_string()));
8689
8690 let vim_mode = cx
8691 .global::<SettingsStore>()
8692 .raw_user_settings()
8693 .get("vim_mode")
8694 == Some(&serde_json::Value::Bool(true));
8695 let copilot_enabled = all_language_settings(file, cx).copilot_enabled(None, None);
8696 let copilot_enabled_for_language = self
8697 .buffer
8698 .read(cx)
8699 .settings_at(0, cx)
8700 .show_copilot_suggestions;
8701
8702 let telemetry = project.read(cx).client().telemetry().clone();
8703 telemetry.report_editor_event(
8704 file_extension,
8705 vim_mode,
8706 operation,
8707 copilot_enabled,
8708 copilot_enabled_for_language,
8709 )
8710 }
8711
8712 /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
8713 /// with each line being an array of {text, highlight} objects.
8714 fn copy_highlight_json(&mut self, _: &CopyHighlightJson, cx: &mut ViewContext<Self>) {
8715 let Some(buffer) = self.buffer.read(cx).as_singleton() else {
8716 return;
8717 };
8718
8719 #[derive(Serialize)]
8720 struct Chunk<'a> {
8721 text: String,
8722 highlight: Option<&'a str>,
8723 }
8724
8725 let snapshot = buffer.read(cx).snapshot();
8726 let range = self
8727 .selected_text_range(cx)
8728 .and_then(|selected_range| {
8729 if selected_range.is_empty() {
8730 None
8731 } else {
8732 Some(selected_range)
8733 }
8734 })
8735 .unwrap_or_else(|| 0..snapshot.len());
8736
8737 let chunks = snapshot.chunks(range, true);
8738 let mut lines = Vec::new();
8739 let mut line: VecDeque<Chunk> = VecDeque::new();
8740
8741 let Some(style) = self.style.as_ref() else {
8742 return;
8743 };
8744
8745 for chunk in chunks {
8746 let highlight = chunk
8747 .syntax_highlight_id
8748 .and_then(|id| id.name(&style.syntax));
8749 let mut chunk_lines = chunk.text.split("\n").peekable();
8750 while let Some(text) = chunk_lines.next() {
8751 let mut merged_with_last_token = false;
8752 if let Some(last_token) = line.back_mut() {
8753 if last_token.highlight == highlight {
8754 last_token.text.push_str(text);
8755 merged_with_last_token = true;
8756 }
8757 }
8758
8759 if !merged_with_last_token {
8760 line.push_back(Chunk {
8761 text: text.into(),
8762 highlight,
8763 });
8764 }
8765
8766 if chunk_lines.peek().is_some() {
8767 if line.len() > 1 && line.front().unwrap().text.is_empty() {
8768 line.pop_front();
8769 }
8770 if line.len() > 1 && line.back().unwrap().text.is_empty() {
8771 line.pop_back();
8772 }
8773
8774 lines.push(mem::take(&mut line));
8775 }
8776 }
8777 }
8778
8779 let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
8780 return;
8781 };
8782 cx.write_to_clipboard(ClipboardItem::new(lines));
8783 }
8784
8785 pub fn inlay_hint_cache(&self) -> &InlayHintCache {
8786 &self.inlay_hint_cache
8787 }
8788
8789 pub fn replay_insert_event(
8790 &mut self,
8791 text: &str,
8792 relative_utf16_range: Option<Range<isize>>,
8793 cx: &mut ViewContext<Self>,
8794 ) {
8795 if !self.input_enabled {
8796 cx.emit(EditorEvent::InputIgnored { text: text.into() });
8797 return;
8798 }
8799 if let Some(relative_utf16_range) = relative_utf16_range {
8800 let selections = self.selections.all::<OffsetUtf16>(cx);
8801 self.change_selections(None, cx, |s| {
8802 let new_ranges = selections.into_iter().map(|range| {
8803 let start = OffsetUtf16(
8804 range
8805 .head()
8806 .0
8807 .saturating_add_signed(relative_utf16_range.start),
8808 );
8809 let end = OffsetUtf16(
8810 range
8811 .head()
8812 .0
8813 .saturating_add_signed(relative_utf16_range.end),
8814 );
8815 start..end
8816 });
8817 s.select_ranges(new_ranges);
8818 });
8819 }
8820
8821 self.handle_input(text, cx);
8822 }
8823
8824 pub fn supports_inlay_hints(&self, cx: &AppContext) -> bool {
8825 let Some(project) = self.project.as_ref() else {
8826 return false;
8827 };
8828 let project = project.read(cx);
8829
8830 let mut supports = false;
8831 self.buffer().read(cx).for_each_buffer(|buffer| {
8832 if !supports {
8833 supports = project
8834 .language_servers_for_buffer(buffer.read(cx), cx)
8835 .any(
8836 |(_, server)| match server.capabilities().inlay_hint_provider {
8837 Some(lsp::OneOf::Left(enabled)) => enabled,
8838 Some(lsp::OneOf::Right(_)) => true,
8839 None => false,
8840 },
8841 )
8842 }
8843 });
8844 supports
8845 }
8846
8847 pub fn focus(&self, cx: &mut WindowContext) {
8848 cx.focus(&self.focus_handle)
8849 }
8850
8851 pub fn is_focused(&self, cx: &WindowContext) -> bool {
8852 self.focus_handle.is_focused(cx)
8853 }
8854
8855 fn handle_focus(&mut self, cx: &mut ViewContext<Self>) {
8856 cx.emit(EditorEvent::Focused);
8857
8858 if let Some(rename) = self.pending_rename.as_ref() {
8859 let rename_editor_focus_handle = rename.editor.read(cx).focus_handle.clone();
8860 cx.focus(&rename_editor_focus_handle);
8861 } else {
8862 self.blink_manager.update(cx, BlinkManager::enable);
8863 self.show_cursor_names(cx);
8864 self.buffer.update(cx, |buffer, cx| {
8865 buffer.finalize_last_transaction(cx);
8866 if self.leader_peer_id.is_none() {
8867 buffer.set_active_selections(
8868 &self.selections.disjoint_anchors(),
8869 self.selections.line_mode,
8870 self.cursor_shape,
8871 cx,
8872 );
8873 }
8874 });
8875 }
8876 }
8877
8878 pub fn handle_blur(&mut self, cx: &mut ViewContext<Self>) {
8879 self.blink_manager.update(cx, BlinkManager::disable);
8880 self.buffer
8881 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
8882 self.hide_context_menu(cx);
8883 hide_hover(self, cx);
8884 cx.emit(EditorEvent::Blurred);
8885 cx.notify();
8886 }
8887
8888 pub fn register_action<A: Action>(
8889 &mut self,
8890 listener: impl Fn(&A, &mut WindowContext) + 'static,
8891 ) -> &mut Self {
8892 let listener = Arc::new(listener);
8893
8894 self.editor_actions.push(Box::new(move |cx| {
8895 let _view = cx.view().clone();
8896 let cx = cx.window_context();
8897 let listener = listener.clone();
8898 cx.on_action(TypeId::of::<A>(), move |action, phase, cx| {
8899 let action = action.downcast_ref().unwrap();
8900 if phase == DispatchPhase::Bubble {
8901 listener(action, cx)
8902 }
8903 })
8904 }));
8905 self
8906 }
8907}
8908
8909pub trait CollaborationHub {
8910 fn collaborators<'a>(&self, cx: &'a AppContext) -> &'a HashMap<PeerId, Collaborator>;
8911 fn user_participant_indices<'a>(
8912 &self,
8913 cx: &'a AppContext,
8914 ) -> &'a HashMap<u64, ParticipantIndex>;
8915 fn user_names(&self, cx: &AppContext) -> HashMap<u64, SharedString>;
8916}
8917
8918impl CollaborationHub for Model<Project> {
8919 fn collaborators<'a>(&self, cx: &'a AppContext) -> &'a HashMap<PeerId, Collaborator> {
8920 self.read(cx).collaborators()
8921 }
8922
8923 fn user_participant_indices<'a>(
8924 &self,
8925 cx: &'a AppContext,
8926 ) -> &'a HashMap<u64, ParticipantIndex> {
8927 self.read(cx).user_store().read(cx).participant_indices()
8928 }
8929
8930 fn user_names(&self, cx: &AppContext) -> HashMap<u64, SharedString> {
8931 let this = self.read(cx);
8932 let user_ids = this.collaborators().values().map(|c| c.user_id);
8933 this.user_store().read_with(cx, |user_store, cx| {
8934 user_store.participant_names(user_ids, cx)
8935 })
8936 }
8937}
8938
8939pub trait CompletionProvider {
8940 fn completions(
8941 &self,
8942 buffer: &Model<Buffer>,
8943 buffer_position: text::Anchor,
8944 cx: &mut ViewContext<Editor>,
8945 ) -> Task<Result<Vec<Completion>>>;
8946
8947 fn resolve_completions(
8948 &self,
8949 completion_indices: Vec<usize>,
8950 completions: Arc<RwLock<Box<[Completion]>>>,
8951 cx: &mut ViewContext<Editor>,
8952 ) -> Task<Result<bool>>;
8953
8954 fn apply_additional_edits_for_completion(
8955 &self,
8956 buffer: Model<Buffer>,
8957 completion: Completion,
8958 push_to_history: bool,
8959 cx: &mut ViewContext<Editor>,
8960 ) -> Task<Result<Option<language::Transaction>>>;
8961}
8962
8963impl CompletionProvider for Model<Project> {
8964 fn completions(
8965 &self,
8966 buffer: &Model<Buffer>,
8967 buffer_position: text::Anchor,
8968 cx: &mut ViewContext<Editor>,
8969 ) -> Task<Result<Vec<Completion>>> {
8970 self.update(cx, |project, cx| {
8971 project.completions(&buffer, buffer_position, cx)
8972 })
8973 }
8974
8975 fn resolve_completions(
8976 &self,
8977 completion_indices: Vec<usize>,
8978 completions: Arc<RwLock<Box<[Completion]>>>,
8979 cx: &mut ViewContext<Editor>,
8980 ) -> Task<Result<bool>> {
8981 self.update(cx, |project, cx| {
8982 project.resolve_completions(completion_indices, completions, cx)
8983 })
8984 }
8985
8986 fn apply_additional_edits_for_completion(
8987 &self,
8988 buffer: Model<Buffer>,
8989 completion: Completion,
8990 push_to_history: bool,
8991 cx: &mut ViewContext<Editor>,
8992 ) -> Task<Result<Option<language::Transaction>>> {
8993 self.update(cx, |project, cx| {
8994 project.apply_additional_edits_for_completion(buffer, completion, push_to_history, cx)
8995 })
8996 }
8997}
8998
8999fn inlay_hint_settings(
9000 location: Anchor,
9001 snapshot: &MultiBufferSnapshot,
9002 cx: &mut ViewContext<'_, Editor>,
9003) -> InlayHintSettings {
9004 let file = snapshot.file_at(location);
9005 let language = snapshot.language_at(location);
9006 let settings = all_language_settings(file, cx);
9007 settings
9008 .language(language.map(|l| l.name()).as_deref())
9009 .inlay_hints
9010}
9011
9012fn consume_contiguous_rows(
9013 contiguous_row_selections: &mut Vec<Selection<Point>>,
9014 selection: &Selection<Point>,
9015 display_map: &DisplaySnapshot,
9016 selections: &mut std::iter::Peekable<std::slice::Iter<Selection<Point>>>,
9017) -> (u32, u32) {
9018 contiguous_row_selections.push(selection.clone());
9019 let start_row = selection.start.row;
9020 let mut end_row = ending_row(selection, display_map);
9021
9022 while let Some(next_selection) = selections.peek() {
9023 if next_selection.start.row <= end_row {
9024 end_row = ending_row(next_selection, display_map);
9025 contiguous_row_selections.push(selections.next().unwrap().clone());
9026 } else {
9027 break;
9028 }
9029 }
9030 (start_row, end_row)
9031}
9032
9033fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> u32 {
9034 if next_selection.end.column > 0 || next_selection.is_empty() {
9035 display_map.next_line_boundary(next_selection.end).0.row + 1
9036 } else {
9037 next_selection.end.row
9038 }
9039}
9040
9041impl EditorSnapshot {
9042 pub fn remote_selections_in_range<'a>(
9043 &'a self,
9044 range: &'a Range<Anchor>,
9045 collaboration_hub: &dyn CollaborationHub,
9046 cx: &'a AppContext,
9047 ) -> impl 'a + Iterator<Item = RemoteSelection> {
9048 let participant_names = collaboration_hub.user_names(cx);
9049 let participant_indices = collaboration_hub.user_participant_indices(cx);
9050 let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
9051 let collaborators_by_replica_id = collaborators_by_peer_id
9052 .iter()
9053 .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
9054 .collect::<HashMap<_, _>>();
9055 self.buffer_snapshot
9056 .remote_selections_in_range(range)
9057 .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
9058 let collaborator = collaborators_by_replica_id.get(&replica_id)?;
9059 let participant_index = participant_indices.get(&collaborator.user_id).copied();
9060 let user_name = participant_names.get(&collaborator.user_id).cloned();
9061 Some(RemoteSelection {
9062 replica_id,
9063 selection,
9064 cursor_shape,
9065 line_mode,
9066 participant_index,
9067 peer_id: collaborator.peer_id,
9068 user_name,
9069 })
9070 })
9071 }
9072
9073 pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
9074 self.display_snapshot.buffer_snapshot.language_at(position)
9075 }
9076
9077 pub fn is_focused(&self) -> bool {
9078 self.is_focused
9079 }
9080
9081 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
9082 self.placeholder_text.as_ref()
9083 }
9084
9085 pub fn scroll_position(&self) -> gpui::Point<f32> {
9086 self.scroll_anchor.scroll_position(&self.display_snapshot)
9087 }
9088
9089 pub fn gutter_dimensions(
9090 &self,
9091 font_id: FontId,
9092 font_size: Pixels,
9093 em_width: Pixels,
9094 max_line_number_width: Pixels,
9095 cx: &AppContext,
9096 ) -> GutterDimensions {
9097 if self.show_gutter {
9098 let descent = cx.text_system().descent(font_id, font_size);
9099 let gutter_padding_factor = 4.0;
9100 let gutter_padding = (em_width * gutter_padding_factor).round();
9101 // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
9102 let min_width_for_number_on_gutter = em_width * 4.0;
9103 let gutter_width =
9104 max_line_number_width.max(min_width_for_number_on_gutter) + gutter_padding * 2.0;
9105 let gutter_margin = -descent;
9106
9107 GutterDimensions {
9108 padding: gutter_padding,
9109 width: gutter_width,
9110 margin: gutter_margin,
9111 }
9112 } else {
9113 GutterDimensions::default()
9114 }
9115 }
9116}
9117
9118impl Deref for EditorSnapshot {
9119 type Target = DisplaySnapshot;
9120
9121 fn deref(&self) -> &Self::Target {
9122 &self.display_snapshot
9123 }
9124}
9125
9126#[derive(Clone, Debug, PartialEq, Eq)]
9127pub enum EditorEvent {
9128 InputIgnored {
9129 text: Arc<str>,
9130 },
9131 InputHandled {
9132 utf16_range_to_replace: Option<Range<isize>>,
9133 text: Arc<str>,
9134 },
9135 ExcerptsAdded {
9136 buffer: Model<Buffer>,
9137 predecessor: ExcerptId,
9138 excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
9139 },
9140 ExcerptsRemoved {
9141 ids: Vec<ExcerptId>,
9142 },
9143 BufferEdited,
9144 Edited,
9145 Reparsed,
9146 Focused,
9147 Blurred,
9148 DirtyChanged,
9149 Saved,
9150 TitleChanged,
9151 DiffBaseChanged,
9152 SelectionsChanged {
9153 local: bool,
9154 },
9155 ScrollPositionChanged {
9156 local: bool,
9157 autoscroll: bool,
9158 },
9159 Closed,
9160}
9161
9162impl EventEmitter<EditorEvent> for Editor {}
9163
9164impl FocusableView for Editor {
9165 fn focus_handle(&self, _cx: &AppContext) -> FocusHandle {
9166 self.focus_handle.clone()
9167 }
9168}
9169
9170impl Render for Editor {
9171 fn render<'a>(&mut self, cx: &mut ViewContext<'a, Self>) -> impl IntoElement {
9172 let settings = ThemeSettings::get_global(cx);
9173 let text_style = match self.mode {
9174 EditorMode::SingleLine | EditorMode::AutoHeight { .. } => TextStyle {
9175 color: cx.theme().colors().editor_foreground,
9176 font_family: settings.ui_font.family.clone(),
9177 font_features: settings.ui_font.features,
9178 font_size: rems(0.875).into(),
9179 font_weight: FontWeight::NORMAL,
9180 font_style: FontStyle::Normal,
9181 line_height: relative(settings.buffer_line_height.value()),
9182 background_color: None,
9183 underline: None,
9184 white_space: WhiteSpace::Normal,
9185 },
9186
9187 EditorMode::Full => TextStyle {
9188 color: cx.theme().colors().editor_foreground,
9189 font_family: settings.buffer_font.family.clone(),
9190 font_features: settings.buffer_font.features,
9191 font_size: settings.buffer_font_size(cx).into(),
9192 font_weight: FontWeight::NORMAL,
9193 font_style: FontStyle::Normal,
9194 line_height: relative(settings.buffer_line_height.value()),
9195 background_color: None,
9196 underline: None,
9197 white_space: WhiteSpace::Normal,
9198 },
9199 };
9200
9201 let background = match self.mode {
9202 EditorMode::SingleLine => cx.theme().system().transparent,
9203 EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
9204 EditorMode::Full => cx.theme().colors().editor_background,
9205 };
9206
9207 EditorElement::new(
9208 cx.view(),
9209 EditorStyle {
9210 background,
9211 local_player: cx.theme().players().local(),
9212 text: text_style,
9213 scrollbar_width: px(12.),
9214 syntax: cx.theme().syntax().clone(),
9215 status: cx.theme().status().clone(),
9216 inlays_style: HighlightStyle {
9217 color: Some(cx.theme().status().hint),
9218 font_weight: Some(FontWeight::BOLD),
9219 ..HighlightStyle::default()
9220 },
9221 suggestions_style: HighlightStyle {
9222 color: Some(cx.theme().status().predictive),
9223 ..HighlightStyle::default()
9224 },
9225 },
9226 )
9227 }
9228}
9229
9230impl ViewInputHandler for Editor {
9231 fn text_for_range(
9232 &mut self,
9233 range_utf16: Range<usize>,
9234 cx: &mut ViewContext<Self>,
9235 ) -> Option<String> {
9236 Some(
9237 self.buffer
9238 .read(cx)
9239 .read(cx)
9240 .text_for_range(OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end))
9241 .collect(),
9242 )
9243 }
9244
9245 fn selected_text_range(&mut self, cx: &mut ViewContext<Self>) -> Option<Range<usize>> {
9246 // Prevent the IME menu from appearing when holding down an alphabetic key
9247 // while input is disabled.
9248 if !self.input_enabled {
9249 return None;
9250 }
9251
9252 let range = self.selections.newest::<OffsetUtf16>(cx).range();
9253 Some(range.start.0..range.end.0)
9254 }
9255
9256 fn marked_text_range(&self, cx: &mut ViewContext<Self>) -> Option<Range<usize>> {
9257 let snapshot = self.buffer.read(cx).read(cx);
9258 let range = self.text_highlights::<InputComposition>(cx)?.1.get(0)?;
9259 Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
9260 }
9261
9262 fn unmark_text(&mut self, cx: &mut ViewContext<Self>) {
9263 self.clear_highlights::<InputComposition>(cx);
9264 self.ime_transaction.take();
9265 }
9266
9267 fn replace_text_in_range(
9268 &mut self,
9269 range_utf16: Option<Range<usize>>,
9270 text: &str,
9271 cx: &mut ViewContext<Self>,
9272 ) {
9273 if !self.input_enabled {
9274 cx.emit(EditorEvent::InputIgnored { text: text.into() });
9275 return;
9276 }
9277
9278 self.transact(cx, |this, cx| {
9279 let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
9280 let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
9281 Some(this.selection_replacement_ranges(range_utf16, cx))
9282 } else {
9283 this.marked_text_ranges(cx)
9284 };
9285
9286 let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
9287 let newest_selection_id = this.selections.newest_anchor().id;
9288 this.selections
9289 .all::<OffsetUtf16>(cx)
9290 .iter()
9291 .zip(ranges_to_replace.iter())
9292 .find_map(|(selection, range)| {
9293 if selection.id == newest_selection_id {
9294 Some(
9295 (range.start.0 as isize - selection.head().0 as isize)
9296 ..(range.end.0 as isize - selection.head().0 as isize),
9297 )
9298 } else {
9299 None
9300 }
9301 })
9302 });
9303
9304 cx.emit(EditorEvent::InputHandled {
9305 utf16_range_to_replace: range_to_replace,
9306 text: text.into(),
9307 });
9308
9309 if let Some(new_selected_ranges) = new_selected_ranges {
9310 this.change_selections(None, cx, |selections| {
9311 selections.select_ranges(new_selected_ranges)
9312 });
9313 }
9314
9315 this.handle_input(text, cx);
9316 });
9317
9318 if let Some(transaction) = self.ime_transaction {
9319 self.buffer.update(cx, |buffer, cx| {
9320 buffer.group_until_transaction(transaction, cx);
9321 });
9322 }
9323
9324 self.unmark_text(cx);
9325 }
9326
9327 fn replace_and_mark_text_in_range(
9328 &mut self,
9329 range_utf16: Option<Range<usize>>,
9330 text: &str,
9331 new_selected_range_utf16: Option<Range<usize>>,
9332 cx: &mut ViewContext<Self>,
9333 ) {
9334 if !self.input_enabled {
9335 cx.emit(EditorEvent::InputIgnored { text: text.into() });
9336 return;
9337 }
9338
9339 let transaction = self.transact(cx, |this, cx| {
9340 let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
9341 let snapshot = this.buffer.read(cx).read(cx);
9342 if let Some(relative_range_utf16) = range_utf16.as_ref() {
9343 for marked_range in &mut marked_ranges {
9344 marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
9345 marked_range.start.0 += relative_range_utf16.start;
9346 marked_range.start =
9347 snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
9348 marked_range.end =
9349 snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
9350 }
9351 }
9352 Some(marked_ranges)
9353 } else if let Some(range_utf16) = range_utf16 {
9354 let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
9355 Some(this.selection_replacement_ranges(range_utf16, cx))
9356 } else {
9357 None
9358 };
9359
9360 let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
9361 let newest_selection_id = this.selections.newest_anchor().id;
9362 this.selections
9363 .all::<OffsetUtf16>(cx)
9364 .iter()
9365 .zip(ranges_to_replace.iter())
9366 .find_map(|(selection, range)| {
9367 if selection.id == newest_selection_id {
9368 Some(
9369 (range.start.0 as isize - selection.head().0 as isize)
9370 ..(range.end.0 as isize - selection.head().0 as isize),
9371 )
9372 } else {
9373 None
9374 }
9375 })
9376 });
9377
9378 cx.emit(EditorEvent::InputHandled {
9379 utf16_range_to_replace: range_to_replace,
9380 text: text.into(),
9381 });
9382
9383 if let Some(ranges) = ranges_to_replace {
9384 this.change_selections(None, cx, |s| s.select_ranges(ranges));
9385 }
9386
9387 let marked_ranges = {
9388 let snapshot = this.buffer.read(cx).read(cx);
9389 this.selections
9390 .disjoint_anchors()
9391 .iter()
9392 .map(|selection| {
9393 selection.start.bias_left(&*snapshot)..selection.end.bias_right(&*snapshot)
9394 })
9395 .collect::<Vec<_>>()
9396 };
9397
9398 if text.is_empty() {
9399 this.unmark_text(cx);
9400 } else {
9401 this.highlight_text::<InputComposition>(
9402 marked_ranges.clone(),
9403 HighlightStyle::default(), // todo!() this.style(cx).composition_mark,
9404 cx,
9405 );
9406 }
9407
9408 this.handle_input(text, cx);
9409
9410 if let Some(new_selected_range) = new_selected_range_utf16 {
9411 let snapshot = this.buffer.read(cx).read(cx);
9412 let new_selected_ranges = marked_ranges
9413 .into_iter()
9414 .map(|marked_range| {
9415 let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
9416 let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
9417 let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
9418 snapshot.clip_offset_utf16(new_start, Bias::Left)
9419 ..snapshot.clip_offset_utf16(new_end, Bias::Right)
9420 })
9421 .collect::<Vec<_>>();
9422
9423 drop(snapshot);
9424 this.change_selections(None, cx, |selections| {
9425 selections.select_ranges(new_selected_ranges)
9426 });
9427 }
9428 });
9429
9430 self.ime_transaction = self.ime_transaction.or(transaction);
9431 if let Some(transaction) = self.ime_transaction {
9432 self.buffer.update(cx, |buffer, cx| {
9433 buffer.group_until_transaction(transaction, cx);
9434 });
9435 }
9436
9437 if self.text_highlights::<InputComposition>(cx).is_none() {
9438 self.ime_transaction.take();
9439 }
9440 }
9441
9442 fn bounds_for_range(
9443 &mut self,
9444 range_utf16: Range<usize>,
9445 element_bounds: gpui::Bounds<Pixels>,
9446 cx: &mut ViewContext<Self>,
9447 ) -> Option<gpui::Bounds<Pixels>> {
9448 let text_layout_details = self.text_layout_details(cx);
9449 let style = &text_layout_details.editor_style;
9450 let font_id = cx.text_system().resolve_font(&style.text.font());
9451 let font_size = style.text.font_size.to_pixels(cx.rem_size());
9452 let line_height = style.text.line_height_in_pixels(cx.rem_size());
9453 let em_width = cx
9454 .text_system()
9455 .typographic_bounds(font_id, font_size, 'm')
9456 .unwrap()
9457 .size
9458 .width;
9459
9460 let snapshot = self.snapshot(cx);
9461 let scroll_position = snapshot.scroll_position();
9462 let scroll_left = scroll_position.x * em_width;
9463
9464 let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
9465 let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
9466 + self.gutter_width;
9467 let y = line_height * (start.row() as f32 - scroll_position.y);
9468
9469 Some(Bounds {
9470 origin: element_bounds.origin + point(x, y),
9471 size: size(em_width, line_height),
9472 })
9473 }
9474}
9475
9476trait SelectionExt {
9477 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
9478 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
9479 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
9480 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
9481 -> Range<u32>;
9482}
9483
9484impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
9485 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
9486 let start = self.start.to_point(buffer);
9487 let end = self.end.to_point(buffer);
9488 if self.reversed {
9489 end..start
9490 } else {
9491 start..end
9492 }
9493 }
9494
9495 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
9496 let start = self.start.to_offset(buffer);
9497 let end = self.end.to_offset(buffer);
9498 if self.reversed {
9499 end..start
9500 } else {
9501 start..end
9502 }
9503 }
9504
9505 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
9506 let start = self
9507 .start
9508 .to_point(&map.buffer_snapshot)
9509 .to_display_point(map);
9510 let end = self
9511 .end
9512 .to_point(&map.buffer_snapshot)
9513 .to_display_point(map);
9514 if self.reversed {
9515 end..start
9516 } else {
9517 start..end
9518 }
9519 }
9520
9521 fn spanned_rows(
9522 &self,
9523 include_end_if_at_line_start: bool,
9524 map: &DisplaySnapshot,
9525 ) -> Range<u32> {
9526 let start = self.start.to_point(&map.buffer_snapshot);
9527 let mut end = self.end.to_point(&map.buffer_snapshot);
9528 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
9529 end.row -= 1;
9530 }
9531
9532 let buffer_start = map.prev_line_boundary(start).0;
9533 let buffer_end = map.next_line_boundary(end).0;
9534 buffer_start.row..buffer_end.row + 1
9535 }
9536}
9537
9538impl<T: InvalidationRegion> InvalidationStack<T> {
9539 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
9540 where
9541 S: Clone + ToOffset,
9542 {
9543 while let Some(region) = self.last() {
9544 let all_selections_inside_invalidation_ranges =
9545 if selections.len() == region.ranges().len() {
9546 selections
9547 .iter()
9548 .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
9549 .all(|(selection, invalidation_range)| {
9550 let head = selection.head().to_offset(buffer);
9551 invalidation_range.start <= head && invalidation_range.end >= head
9552 })
9553 } else {
9554 false
9555 };
9556
9557 if all_selections_inside_invalidation_ranges {
9558 break;
9559 } else {
9560 self.pop();
9561 }
9562 }
9563 }
9564}
9565
9566impl<T> Default for InvalidationStack<T> {
9567 fn default() -> Self {
9568 Self(Default::default())
9569 }
9570}
9571
9572impl<T> Deref for InvalidationStack<T> {
9573 type Target = Vec<T>;
9574
9575 fn deref(&self) -> &Self::Target {
9576 &self.0
9577 }
9578}
9579
9580impl<T> DerefMut for InvalidationStack<T> {
9581 fn deref_mut(&mut self) -> &mut Self::Target {
9582 &mut self.0
9583 }
9584}
9585
9586impl InvalidationRegion for SnippetState {
9587 fn ranges(&self) -> &[Range<Anchor>] {
9588 &self.ranges[self.active_index]
9589 }
9590}
9591
9592pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> RenderBlock {
9593 let (text_without_backticks, code_ranges) = highlight_diagnostic_message(&diagnostic);
9594
9595 Arc::new(move |cx: &mut BlockContext| {
9596 let color = Some(cx.theme().colors().text_accent);
9597 let group_id: SharedString = cx.block_id.to_string().into();
9598 // TODO: Nate: We should tint the background of the block with the severity color
9599 // We need to extend the theme before we can do this
9600 h_flex()
9601 .id(cx.block_id)
9602 .group(group_id.clone())
9603 .relative()
9604 .pl(cx.anchor_x)
9605 .size_full()
9606 .gap_2()
9607 .child(
9608 StyledText::new(text_without_backticks.clone()).with_highlights(
9609 &cx.text_style(),
9610 code_ranges.iter().map(|range| {
9611 (
9612 range.clone(),
9613 HighlightStyle {
9614 color,
9615 ..Default::default()
9616 },
9617 )
9618 }),
9619 ),
9620 )
9621 .child(
9622 IconButton::new(("copy-block", cx.block_id), IconName::Copy)
9623 .icon_color(Color::Muted)
9624 .size(ButtonSize::Compact)
9625 .style(ButtonStyle::Transparent)
9626 .visible_on_hover(group_id)
9627 .on_click({
9628 let message = diagnostic.message.clone();
9629 move |_click, cx| cx.write_to_clipboard(ClipboardItem::new(message.clone()))
9630 })
9631 .tooltip(|cx| Tooltip::text("Copy diagnostic message", cx)),
9632 )
9633 .into_any_element()
9634 })
9635}
9636
9637pub fn highlight_diagnostic_message(diagnostic: &Diagnostic) -> (SharedString, Vec<Range<usize>>) {
9638 let mut text_without_backticks = String::new();
9639 let mut code_ranges = Vec::new();
9640
9641 if let Some(source) = &diagnostic.source {
9642 text_without_backticks.push_str(&source);
9643 code_ranges.push(0..source.len());
9644 text_without_backticks.push_str(": ");
9645 }
9646
9647 let mut prev_offset = 0;
9648 let mut in_code_block = false;
9649 for (ix, _) in diagnostic
9650 .message
9651 .match_indices('`')
9652 .chain([(diagnostic.message.len(), "")])
9653 {
9654 let prev_len = text_without_backticks.len();
9655 text_without_backticks.push_str(&diagnostic.message[prev_offset..ix]);
9656 prev_offset = ix + 1;
9657 if in_code_block {
9658 code_ranges.push(prev_len..text_without_backticks.len());
9659 in_code_block = false;
9660 } else {
9661 in_code_block = true;
9662 }
9663 }
9664
9665 (text_without_backticks.into(), code_ranges)
9666}
9667
9668fn diagnostic_style(severity: DiagnosticSeverity, valid: bool, colors: &StatusColors) -> Hsla {
9669 match (severity, valid) {
9670 (DiagnosticSeverity::ERROR, true) => colors.error,
9671 (DiagnosticSeverity::ERROR, false) => colors.error,
9672 (DiagnosticSeverity::WARNING, true) => colors.warning,
9673 (DiagnosticSeverity::WARNING, false) => colors.warning,
9674 (DiagnosticSeverity::INFORMATION, true) => colors.info,
9675 (DiagnosticSeverity::INFORMATION, false) => colors.info,
9676 (DiagnosticSeverity::HINT, true) => colors.info,
9677 (DiagnosticSeverity::HINT, false) => colors.info,
9678 _ => colors.ignored,
9679 }
9680}
9681
9682pub fn styled_runs_for_code_label<'a>(
9683 label: &'a CodeLabel,
9684 syntax_theme: &'a theme::SyntaxTheme,
9685) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
9686 let fade_out = HighlightStyle {
9687 fade_out: Some(0.35),
9688 ..Default::default()
9689 };
9690
9691 let mut prev_end = label.filter_range.end;
9692 label
9693 .runs
9694 .iter()
9695 .enumerate()
9696 .flat_map(move |(ix, (range, highlight_id))| {
9697 let style = if let Some(style) = highlight_id.style(syntax_theme) {
9698 style
9699 } else {
9700 return Default::default();
9701 };
9702 let mut muted_style = style;
9703 muted_style.highlight(fade_out);
9704
9705 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
9706 if range.start >= label.filter_range.end {
9707 if range.start > prev_end {
9708 runs.push((prev_end..range.start, fade_out));
9709 }
9710 runs.push((range.clone(), muted_style));
9711 } else if range.end <= label.filter_range.end {
9712 runs.push((range.clone(), style));
9713 } else {
9714 runs.push((range.start..label.filter_range.end, style));
9715 runs.push((label.filter_range.end..range.end, muted_style));
9716 }
9717 prev_end = cmp::max(prev_end, range.end);
9718
9719 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
9720 runs.push((prev_end..label.text.len(), fade_out));
9721 }
9722
9723 runs
9724 })
9725}
9726
9727pub(crate) fn split_words<'a>(text: &'a str) -> impl std::iter::Iterator<Item = &'a str> + 'a {
9728 let mut index = 0;
9729 let mut codepoints = text.char_indices().peekable();
9730
9731 std::iter::from_fn(move || {
9732 let start_index = index;
9733 while let Some((new_index, codepoint)) = codepoints.next() {
9734 index = new_index + codepoint.len_utf8();
9735 let current_upper = codepoint.is_uppercase();
9736 let next_upper = codepoints
9737 .peek()
9738 .map(|(_, c)| c.is_uppercase())
9739 .unwrap_or(false);
9740
9741 if !current_upper && next_upper {
9742 return Some(&text[start_index..index]);
9743 }
9744 }
9745
9746 index = text.len();
9747 if start_index < text.len() {
9748 return Some(&text[start_index..]);
9749 }
9750 None
9751 })
9752 .flat_map(|word| word.split_inclusive('_'))
9753 .flat_map(|word| word.split_inclusive('-'))
9754}
9755
9756trait RangeToAnchorExt {
9757 fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
9758}
9759
9760impl<T: ToOffset> RangeToAnchorExt for Range<T> {
9761 fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
9762 snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
9763 }
9764}