1use crate::{
   2    Anchor, Autoscroll, Editor, EditorEvent, EditorSettings, ExcerptId, ExcerptRange, FormatTarget,
   3    MultiBuffer, MultiBufferSnapshot, NavigationData, SearchWithinRange, SelectionEffects,
   4    ToPoint as _,
   5    display_map::HighlightKey,
   6    editor_settings::SeedQuerySetting,
   7    persistence::{DB, SerializedEditor},
   8    scroll::ScrollAnchor,
   9};
  10use anyhow::{Context as _, Result, anyhow};
  11use collections::{HashMap, HashSet};
  12use file_icons::FileIcons;
  13use futures::future::try_join_all;
  14use git::status::GitSummary;
  15use gpui::{
  16    AnyElement, App, AsyncWindowContext, Context, Entity, EntityId, EventEmitter, IntoElement,
  17    ParentElement, Pixels, SharedString, Styled, Task, WeakEntity, Window, point,
  18};
  19use language::{
  20    Bias, Buffer, BufferRow, CharKind, DiskState, LocalFile, Point, SelectionGoal,
  21    proto::serialize_anchor as serialize_text_anchor,
  22};
  23use lsp::DiagnosticSeverity;
  24use project::{
  25    Project, ProjectItem as _, ProjectPath, lsp_store::FormatTrigger,
  26    project_settings::ProjectSettings, search::SearchQuery,
  27};
  28use rpc::proto::{self, update_view};
  29use settings::Settings;
  30use std::{
  31    any::TypeId,
  32    borrow::Cow,
  33    cmp::{self, Ordering},
  34    iter,
  35    ops::Range,
  36    path::{Path, PathBuf},
  37    sync::Arc,
  38};
  39use text::{BufferId, BufferSnapshot, Selection};
  40use theme::{Theme, ThemeSettings};
  41use ui::{IconDecorationKind, prelude::*};
  42use util::{ResultExt, TryFutureExt, paths::PathExt};
  43use workspace::{
  44    CollaboratorId, ItemId, ItemNavHistory, ToolbarItemLocation, ViewId, Workspace, WorkspaceId,
  45    item::{FollowableItem, Item, ItemEvent, ProjectItem, SaveOptions},
  46    searchable::{Direction, SearchEvent, SearchableItem, SearchableItemHandle},
  47};
  48use workspace::{
  49    OpenOptions,
  50    item::{Dedup, ItemSettings, SerializableItem, TabContentParams},
  51};
  52use workspace::{
  53    OpenVisible, Pane, WorkspaceSettings,
  54    item::{BreadcrumbText, FollowEvent, ProjectItemKind},
  55    searchable::SearchOptions,
  56};
  57
  58pub const MAX_TAB_TITLE_LEN: usize = 24;
  59
  60impl FollowableItem for Editor {
  61    fn remote_id(&self) -> Option<ViewId> {
  62        self.remote_id
  63    }
  64
  65    fn from_state_proto(
  66        workspace: Entity<Workspace>,
  67        remote_id: ViewId,
  68        state: &mut Option<proto::view::Variant>,
  69        window: &mut Window,
  70        cx: &mut App,
  71    ) -> Option<Task<Result<Entity<Self>>>> {
  72        let project = workspace.read(cx).project().to_owned();
  73        let Some(proto::view::Variant::Editor(_)) = state else {
  74            return None;
  75        };
  76        let Some(proto::view::Variant::Editor(state)) = state.take() else {
  77            unreachable!()
  78        };
  79
  80        let buffer_ids = state
  81            .excerpts
  82            .iter()
  83            .map(|excerpt| excerpt.buffer_id)
  84            .collect::<HashSet<_>>();
  85        let buffers = project.update(cx, |project, cx| {
  86            buffer_ids
  87                .iter()
  88                .map(|id| BufferId::new(*id).map(|id| project.open_buffer_by_id(id, cx)))
  89                .collect::<Result<Vec<_>>>()
  90        });
  91
  92        Some(window.spawn(cx, async move |cx| {
  93            let mut buffers = futures::future::try_join_all(buffers?)
  94                .await
  95                .debug_assert_ok("leaders don't share views for unshared buffers")?;
  96
  97            let editor = cx.update(|window, cx| {
  98                let multibuffer = cx.new(|cx| {
  99                    let mut multibuffer;
 100                    if state.singleton && buffers.len() == 1 {
 101                        multibuffer = MultiBuffer::singleton(buffers.pop().unwrap(), cx)
 102                    } else {
 103                        multibuffer = MultiBuffer::new(project.read(cx).capability());
 104                        let mut sorted_excerpts = state.excerpts.clone();
 105                        sorted_excerpts.sort_by_key(|e| e.id);
 106                        let mut sorted_excerpts = sorted_excerpts.into_iter().peekable();
 107
 108                        while let Some(excerpt) = sorted_excerpts.next() {
 109                            let Ok(buffer_id) = BufferId::new(excerpt.buffer_id) else {
 110                                continue;
 111                            };
 112
 113                            let mut insert_position = ExcerptId::min();
 114                            for e in &state.excerpts {
 115                                if e.id == excerpt.id {
 116                                    break;
 117                                }
 118                                if e.id < excerpt.id {
 119                                    insert_position = ExcerptId::from_proto(e.id);
 120                                }
 121                            }
 122
 123                            let buffer =
 124                                buffers.iter().find(|b| b.read(cx).remote_id() == buffer_id);
 125
 126                            let Some(excerpt) = deserialize_excerpt_range(excerpt) else {
 127                                continue;
 128                            };
 129
 130                            let Some(buffer) = buffer else { continue };
 131
 132                            multibuffer.insert_excerpts_with_ids_after(
 133                                insert_position,
 134                                buffer.clone(),
 135                                [excerpt],
 136                                cx,
 137                            );
 138                        }
 139                    };
 140
 141                    if let Some(title) = &state.title {
 142                        multibuffer = multibuffer.with_title(title.clone())
 143                    }
 144
 145                    multibuffer
 146                });
 147
 148                cx.new(|cx| {
 149                    let mut editor =
 150                        Editor::for_multibuffer(multibuffer, Some(project.clone()), window, cx);
 151                    editor.remote_id = Some(remote_id);
 152                    editor
 153                })
 154            })?;
 155
 156            update_editor_from_message(
 157                editor.downgrade(),
 158                project,
 159                proto::update_view::Editor {
 160                    selections: state.selections,
 161                    pending_selection: state.pending_selection,
 162                    scroll_top_anchor: state.scroll_top_anchor,
 163                    scroll_x: state.scroll_x,
 164                    scroll_y: state.scroll_y,
 165                    ..Default::default()
 166                },
 167                cx,
 168            )
 169            .await?;
 170
 171            Ok(editor)
 172        }))
 173    }
 174
 175    fn set_leader_id(
 176        &mut self,
 177        leader_id: Option<CollaboratorId>,
 178        window: &mut Window,
 179        cx: &mut Context<Self>,
 180    ) {
 181        self.leader_id = leader_id;
 182        if self.leader_id.is_some() {
 183            self.buffer.update(cx, |buffer, cx| {
 184                buffer.remove_active_selections(cx);
 185            });
 186        } else if self.focus_handle.is_focused(window) {
 187            self.buffer.update(cx, |buffer, cx| {
 188                buffer.set_active_selections(
 189                    &self.selections.disjoint_anchors(),
 190                    self.selections.line_mode,
 191                    self.cursor_shape,
 192                    cx,
 193                );
 194            });
 195        }
 196        cx.notify();
 197    }
 198
 199    fn to_state_proto(&self, _: &Window, cx: &App) -> Option<proto::view::Variant> {
 200        let buffer = self.buffer.read(cx);
 201        if buffer
 202            .as_singleton()
 203            .and_then(|buffer| buffer.read(cx).file())
 204            .map_or(false, |file| file.is_private())
 205        {
 206            return None;
 207        }
 208
 209        let scroll_anchor = self.scroll_manager.anchor();
 210        let excerpts = buffer
 211            .read(cx)
 212            .excerpts()
 213            .map(|(id, buffer, range)| proto::Excerpt {
 214                id: id.to_proto(),
 215                buffer_id: buffer.remote_id().into(),
 216                context_start: Some(serialize_text_anchor(&range.context.start)),
 217                context_end: Some(serialize_text_anchor(&range.context.end)),
 218                primary_start: Some(serialize_text_anchor(&range.primary.start)),
 219                primary_end: Some(serialize_text_anchor(&range.primary.end)),
 220            })
 221            .collect();
 222        let snapshot = buffer.snapshot(cx);
 223
 224        Some(proto::view::Variant::Editor(proto::view::Editor {
 225            singleton: buffer.is_singleton(),
 226            title: (!buffer.is_singleton()).then(|| buffer.title(cx).into()),
 227            excerpts,
 228            scroll_top_anchor: Some(serialize_anchor(&scroll_anchor.anchor, &snapshot)),
 229            scroll_x: scroll_anchor.offset.x,
 230            scroll_y: scroll_anchor.offset.y,
 231            selections: self
 232                .selections
 233                .disjoint_anchors()
 234                .iter()
 235                .map(|s| serialize_selection(s, &snapshot))
 236                .collect(),
 237            pending_selection: self
 238                .selections
 239                .pending_anchor()
 240                .as_ref()
 241                .map(|s| serialize_selection(s, &snapshot)),
 242        }))
 243    }
 244
 245    fn to_follow_event(event: &EditorEvent) -> Option<workspace::item::FollowEvent> {
 246        match event {
 247            EditorEvent::Edited { .. } => Some(FollowEvent::Unfollow),
 248            EditorEvent::SelectionsChanged { local }
 249            | EditorEvent::ScrollPositionChanged { local, .. } => {
 250                if *local {
 251                    Some(FollowEvent::Unfollow)
 252                } else {
 253                    None
 254                }
 255            }
 256            _ => None,
 257        }
 258    }
 259
 260    fn add_event_to_update_proto(
 261        &self,
 262        event: &EditorEvent,
 263        update: &mut Option<proto::update_view::Variant>,
 264        _: &Window,
 265        cx: &App,
 266    ) -> bool {
 267        let update =
 268            update.get_or_insert_with(|| proto::update_view::Variant::Editor(Default::default()));
 269
 270        match update {
 271            proto::update_view::Variant::Editor(update) => match event {
 272                EditorEvent::ExcerptsAdded {
 273                    buffer,
 274                    predecessor,
 275                    excerpts,
 276                } => {
 277                    let buffer_id = buffer.read(cx).remote_id();
 278                    let mut excerpts = excerpts.iter();
 279                    if let Some((id, range)) = excerpts.next() {
 280                        update.inserted_excerpts.push(proto::ExcerptInsertion {
 281                            previous_excerpt_id: Some(predecessor.to_proto()),
 282                            excerpt: serialize_excerpt(buffer_id, id, range),
 283                        });
 284                        update.inserted_excerpts.extend(excerpts.map(|(id, range)| {
 285                            proto::ExcerptInsertion {
 286                                previous_excerpt_id: None,
 287                                excerpt: serialize_excerpt(buffer_id, id, range),
 288                            }
 289                        }))
 290                    }
 291                    true
 292                }
 293                EditorEvent::ExcerptsRemoved { ids, .. } => {
 294                    update
 295                        .deleted_excerpts
 296                        .extend(ids.iter().map(ExcerptId::to_proto));
 297                    true
 298                }
 299                EditorEvent::ScrollPositionChanged { autoscroll, .. } if !autoscroll => {
 300                    let snapshot = self.buffer.read(cx).snapshot(cx);
 301                    let scroll_anchor = self.scroll_manager.anchor();
 302                    update.scroll_top_anchor =
 303                        Some(serialize_anchor(&scroll_anchor.anchor, &snapshot));
 304                    update.scroll_x = scroll_anchor.offset.x;
 305                    update.scroll_y = scroll_anchor.offset.y;
 306                    true
 307                }
 308                EditorEvent::SelectionsChanged { .. } => {
 309                    let snapshot = self.buffer.read(cx).snapshot(cx);
 310                    update.selections = self
 311                        .selections
 312                        .disjoint_anchors()
 313                        .iter()
 314                        .map(|s| serialize_selection(s, &snapshot))
 315                        .collect();
 316                    update.pending_selection = self
 317                        .selections
 318                        .pending_anchor()
 319                        .as_ref()
 320                        .map(|s| serialize_selection(s, &snapshot));
 321                    true
 322                }
 323                _ => false,
 324            },
 325        }
 326    }
 327
 328    fn apply_update_proto(
 329        &mut self,
 330        project: &Entity<Project>,
 331        message: update_view::Variant,
 332        window: &mut Window,
 333        cx: &mut Context<Self>,
 334    ) -> Task<Result<()>> {
 335        let update_view::Variant::Editor(message) = message;
 336        let project = project.clone();
 337        cx.spawn_in(window, async move |this, cx| {
 338            update_editor_from_message(this, project, message, cx).await
 339        })
 340    }
 341
 342    fn is_project_item(&self, _window: &Window, _cx: &App) -> bool {
 343        true
 344    }
 345
 346    fn dedup(&self, existing: &Self, _: &Window, cx: &App) -> Option<Dedup> {
 347        let self_singleton = self.buffer.read(cx).as_singleton()?;
 348        let other_singleton = existing.buffer.read(cx).as_singleton()?;
 349        if self_singleton == other_singleton {
 350            Some(Dedup::KeepExisting)
 351        } else {
 352            None
 353        }
 354    }
 355
 356    fn update_agent_location(
 357        &mut self,
 358        location: language::Anchor,
 359        window: &mut Window,
 360        cx: &mut Context<Self>,
 361    ) {
 362        let buffer = self.buffer.read(cx);
 363        let buffer = buffer.read(cx);
 364        let Some((excerpt_id, _, _)) = buffer.as_singleton() else {
 365            return;
 366        };
 367        let position = buffer.anchor_in_excerpt(*excerpt_id, location).unwrap();
 368        let selection = Selection {
 369            id: 0,
 370            reversed: false,
 371            start: position,
 372            end: position,
 373            goal: SelectionGoal::None,
 374        };
 375        drop(buffer);
 376        self.set_selections_from_remote(vec![selection], None, window, cx);
 377        self.request_autoscroll_remotely(Autoscroll::fit(), cx);
 378    }
 379}
 380
 381async fn update_editor_from_message(
 382    this: WeakEntity<Editor>,
 383    project: Entity<Project>,
 384    message: proto::update_view::Editor,
 385    cx: &mut AsyncWindowContext,
 386) -> Result<()> {
 387    // Open all of the buffers of which excerpts were added to the editor.
 388    let inserted_excerpt_buffer_ids = message
 389        .inserted_excerpts
 390        .iter()
 391        .filter_map(|insertion| Some(insertion.excerpt.as_ref()?.buffer_id))
 392        .collect::<HashSet<_>>();
 393    let inserted_excerpt_buffers = project.update(cx, |project, cx| {
 394        inserted_excerpt_buffer_ids
 395            .into_iter()
 396            .map(|id| BufferId::new(id).map(|id| project.open_buffer_by_id(id, cx)))
 397            .collect::<Result<Vec<_>>>()
 398    })??;
 399    let _inserted_excerpt_buffers = try_join_all(inserted_excerpt_buffers).await?;
 400
 401    // Update the editor's excerpts.
 402    this.update(cx, |editor, cx| {
 403        editor.buffer.update(cx, |multibuffer, cx| {
 404            let mut removed_excerpt_ids = message
 405                .deleted_excerpts
 406                .into_iter()
 407                .map(ExcerptId::from_proto)
 408                .collect::<Vec<_>>();
 409            removed_excerpt_ids.sort_by({
 410                let multibuffer = multibuffer.read(cx);
 411                move |a, b| a.cmp(b, &multibuffer)
 412            });
 413
 414            let mut insertions = message.inserted_excerpts.into_iter().peekable();
 415            while let Some(insertion) = insertions.next() {
 416                let Some(excerpt) = insertion.excerpt else {
 417                    continue;
 418                };
 419                let Some(previous_excerpt_id) = insertion.previous_excerpt_id else {
 420                    continue;
 421                };
 422                let buffer_id = BufferId::new(excerpt.buffer_id)?;
 423                let Some(buffer) = project.read(cx).buffer_for_id(buffer_id, cx) else {
 424                    continue;
 425                };
 426
 427                let adjacent_excerpts = iter::from_fn(|| {
 428                    let insertion = insertions.peek()?;
 429                    if insertion.previous_excerpt_id.is_none()
 430                        && insertion.excerpt.as_ref()?.buffer_id == u64::from(buffer_id)
 431                    {
 432                        insertions.next()?.excerpt
 433                    } else {
 434                        None
 435                    }
 436                });
 437
 438                multibuffer.insert_excerpts_with_ids_after(
 439                    ExcerptId::from_proto(previous_excerpt_id),
 440                    buffer,
 441                    [excerpt]
 442                        .into_iter()
 443                        .chain(adjacent_excerpts)
 444                        .filter_map(deserialize_excerpt_range),
 445                    cx,
 446                );
 447            }
 448
 449            multibuffer.remove_excerpts(removed_excerpt_ids, cx);
 450            anyhow::Ok(())
 451        })
 452    })??;
 453
 454    // Deserialize the editor state.
 455    let (selections, pending_selection, scroll_top_anchor) = this.update(cx, |editor, cx| {
 456        let buffer = editor.buffer.read(cx).read(cx);
 457        let selections = message
 458            .selections
 459            .into_iter()
 460            .filter_map(|selection| deserialize_selection(&buffer, selection))
 461            .collect::<Vec<_>>();
 462        let pending_selection = message
 463            .pending_selection
 464            .and_then(|selection| deserialize_selection(&buffer, selection));
 465        let scroll_top_anchor = message
 466            .scroll_top_anchor
 467            .and_then(|anchor| deserialize_anchor(&buffer, anchor));
 468        anyhow::Ok((selections, pending_selection, scroll_top_anchor))
 469    })??;
 470
 471    // Wait until the buffer has received all of the operations referenced by
 472    // the editor's new state.
 473    this.update(cx, |editor, cx| {
 474        editor.buffer.update(cx, |buffer, cx| {
 475            buffer.wait_for_anchors(
 476                selections
 477                    .iter()
 478                    .chain(pending_selection.as_ref())
 479                    .flat_map(|selection| [selection.start, selection.end])
 480                    .chain(scroll_top_anchor),
 481                cx,
 482            )
 483        })
 484    })?
 485    .await?;
 486
 487    // Update the editor's state.
 488    this.update_in(cx, |editor, window, cx| {
 489        if !selections.is_empty() || pending_selection.is_some() {
 490            editor.set_selections_from_remote(selections, pending_selection, window, cx);
 491            editor.request_autoscroll_remotely(Autoscroll::newest(), cx);
 492        } else if let Some(scroll_top_anchor) = scroll_top_anchor {
 493            editor.set_scroll_anchor_remote(
 494                ScrollAnchor {
 495                    anchor: scroll_top_anchor,
 496                    offset: point(message.scroll_x, message.scroll_y),
 497                },
 498                window,
 499                cx,
 500            );
 501        }
 502    })?;
 503    Ok(())
 504}
 505
 506fn serialize_excerpt(
 507    buffer_id: BufferId,
 508    id: &ExcerptId,
 509    range: &ExcerptRange<language::Anchor>,
 510) -> Option<proto::Excerpt> {
 511    Some(proto::Excerpt {
 512        id: id.to_proto(),
 513        buffer_id: buffer_id.into(),
 514        context_start: Some(serialize_text_anchor(&range.context.start)),
 515        context_end: Some(serialize_text_anchor(&range.context.end)),
 516        primary_start: Some(serialize_text_anchor(&range.primary.start)),
 517        primary_end: Some(serialize_text_anchor(&range.primary.end)),
 518    })
 519}
 520
 521fn serialize_selection(
 522    selection: &Selection<Anchor>,
 523    buffer: &MultiBufferSnapshot,
 524) -> proto::Selection {
 525    proto::Selection {
 526        id: selection.id as u64,
 527        start: Some(serialize_anchor(&selection.start, &buffer)),
 528        end: Some(serialize_anchor(&selection.end, &buffer)),
 529        reversed: selection.reversed,
 530    }
 531}
 532
 533fn serialize_anchor(anchor: &Anchor, buffer: &MultiBufferSnapshot) -> proto::EditorAnchor {
 534    proto::EditorAnchor {
 535        excerpt_id: buffer.latest_excerpt_id(anchor.excerpt_id).to_proto(),
 536        anchor: Some(serialize_text_anchor(&anchor.text_anchor)),
 537    }
 538}
 539
 540fn deserialize_excerpt_range(
 541    excerpt: proto::Excerpt,
 542) -> Option<(ExcerptId, ExcerptRange<language::Anchor>)> {
 543    let context = {
 544        let start = language::proto::deserialize_anchor(excerpt.context_start?)?;
 545        let end = language::proto::deserialize_anchor(excerpt.context_end?)?;
 546        start..end
 547    };
 548    let primary = excerpt
 549        .primary_start
 550        .zip(excerpt.primary_end)
 551        .and_then(|(start, end)| {
 552            let start = language::proto::deserialize_anchor(start)?;
 553            let end = language::proto::deserialize_anchor(end)?;
 554            Some(start..end)
 555        })
 556        .unwrap_or_else(|| context.clone());
 557    Some((
 558        ExcerptId::from_proto(excerpt.id),
 559        ExcerptRange { context, primary },
 560    ))
 561}
 562
 563fn deserialize_selection(
 564    buffer: &MultiBufferSnapshot,
 565    selection: proto::Selection,
 566) -> Option<Selection<Anchor>> {
 567    Some(Selection {
 568        id: selection.id as usize,
 569        start: deserialize_anchor(buffer, selection.start?)?,
 570        end: deserialize_anchor(buffer, selection.end?)?,
 571        reversed: selection.reversed,
 572        goal: SelectionGoal::None,
 573    })
 574}
 575
 576fn deserialize_anchor(buffer: &MultiBufferSnapshot, anchor: proto::EditorAnchor) -> Option<Anchor> {
 577    let excerpt_id = ExcerptId::from_proto(anchor.excerpt_id);
 578    Some(Anchor {
 579        excerpt_id,
 580        text_anchor: language::proto::deserialize_anchor(anchor.anchor?)?,
 581        buffer_id: buffer.buffer_id_for_excerpt(excerpt_id),
 582        diff_base_anchor: None,
 583    })
 584}
 585
 586impl Item for Editor {
 587    type Event = EditorEvent;
 588
 589    fn navigate(
 590        &mut self,
 591        data: Box<dyn std::any::Any>,
 592        window: &mut Window,
 593        cx: &mut Context<Self>,
 594    ) -> bool {
 595        if let Ok(data) = data.downcast::<NavigationData>() {
 596            let newest_selection = self.selections.newest::<Point>(cx);
 597            let buffer = self.buffer.read(cx).read(cx);
 598            let offset = if buffer.can_resolve(&data.cursor_anchor) {
 599                data.cursor_anchor.to_point(&buffer)
 600            } else {
 601                buffer.clip_point(data.cursor_position, Bias::Left)
 602            };
 603
 604            let mut scroll_anchor = data.scroll_anchor;
 605            if !buffer.can_resolve(&scroll_anchor.anchor) {
 606                scroll_anchor.anchor = buffer.anchor_before(
 607                    buffer.clip_point(Point::new(data.scroll_top_row, 0), Bias::Left),
 608                );
 609            }
 610
 611            drop(buffer);
 612
 613            if newest_selection.head() == offset {
 614                false
 615            } else {
 616                self.set_scroll_anchor(scroll_anchor, window, cx);
 617                self.change_selections(
 618                    SelectionEffects::default().nav_history(false),
 619                    window,
 620                    cx,
 621                    |s| s.select_ranges([offset..offset]),
 622                );
 623                true
 624            }
 625        } else {
 626            false
 627        }
 628    }
 629
 630    fn tab_tooltip_text(&self, cx: &App) -> Option<SharedString> {
 631        let file_path = self
 632            .buffer()
 633            .read(cx)
 634            .as_singleton()?
 635            .read(cx)
 636            .file()
 637            .and_then(|f| f.as_local())?
 638            .abs_path(cx);
 639
 640        let file_path = file_path.compact().to_string_lossy().to_string();
 641
 642        Some(file_path.into())
 643    }
 644
 645    fn telemetry_event_text(&self) -> Option<&'static str> {
 646        None
 647    }
 648
 649    fn tab_content_text(&self, detail: usize, cx: &App) -> SharedString {
 650        if let Some(path) = path_for_buffer(&self.buffer, detail, true, cx) {
 651            path.to_string_lossy().to_string().into()
 652        } else {
 653            "untitled".into()
 654        }
 655    }
 656
 657    fn tab_icon(&self, _: &Window, cx: &App) -> Option<Icon> {
 658        ItemSettings::get_global(cx)
 659            .file_icons
 660            .then(|| {
 661                path_for_buffer(&self.buffer, 0, true, cx)
 662                    .and_then(|path| FileIcons::get_icon(path.as_ref(), cx))
 663            })
 664            .flatten()
 665            .map(Icon::from_path)
 666    }
 667
 668    fn tab_content(&self, params: TabContentParams, _: &Window, cx: &App) -> AnyElement {
 669        let label_color = if ItemSettings::get_global(cx).git_status {
 670            self.buffer()
 671                .read(cx)
 672                .as_singleton()
 673                .and_then(|buffer| {
 674                    let buffer = buffer.read(cx);
 675                    let path = buffer.project_path(cx)?;
 676                    let buffer_id = buffer.remote_id();
 677                    let project = self.project.as_ref()?.read(cx);
 678                    let entry = project.entry_for_path(&path, cx)?;
 679                    let (repo, repo_path) = project
 680                        .git_store()
 681                        .read(cx)
 682                        .repository_and_path_for_buffer_id(buffer_id, cx)?;
 683                    let status = repo.read(cx).status_for_path(&repo_path)?.status;
 684
 685                    Some(entry_git_aware_label_color(
 686                        status.summary(),
 687                        entry.is_ignored,
 688                        params.selected,
 689                    ))
 690                })
 691                .unwrap_or_else(|| entry_label_color(params.selected))
 692        } else {
 693            entry_label_color(params.selected)
 694        };
 695
 696        let description = params.detail.and_then(|detail| {
 697            let path = path_for_buffer(&self.buffer, detail, false, cx)?;
 698            let description = path.to_string_lossy();
 699            let description = description.trim();
 700
 701            if description.is_empty() {
 702                return None;
 703            }
 704
 705            Some(util::truncate_and_trailoff(description, MAX_TAB_TITLE_LEN))
 706        });
 707
 708        // Whether the file was saved in the past but is now deleted.
 709        let was_deleted: bool = self
 710            .buffer()
 711            .read(cx)
 712            .as_singleton()
 713            .and_then(|buffer| buffer.read(cx).file())
 714            .map_or(false, |file| file.disk_state() == DiskState::Deleted);
 715
 716        h_flex()
 717            .gap_2()
 718            .child(
 719                Label::new(self.title(cx).to_string())
 720                    .color(label_color)
 721                    .when(params.preview, |this| this.italic())
 722                    .when(was_deleted, |this| this.strikethrough()),
 723            )
 724            .when_some(description, |this, description| {
 725                this.child(
 726                    Label::new(description)
 727                        .size(LabelSize::XSmall)
 728                        .color(Color::Muted),
 729                )
 730            })
 731            .into_any_element()
 732    }
 733
 734    fn for_each_project_item(
 735        &self,
 736        cx: &App,
 737        f: &mut dyn FnMut(EntityId, &dyn project::ProjectItem),
 738    ) {
 739        self.buffer
 740            .read(cx)
 741            .for_each_buffer(|buffer| f(buffer.entity_id(), buffer.read(cx)));
 742    }
 743
 744    fn is_singleton(&self, cx: &App) -> bool {
 745        self.buffer.read(cx).is_singleton()
 746    }
 747
 748    fn can_save_as(&self, cx: &App) -> bool {
 749        self.buffer.read(cx).is_singleton()
 750    }
 751
 752    fn clone_on_split(
 753        &self,
 754        _workspace_id: Option<WorkspaceId>,
 755        window: &mut Window,
 756        cx: &mut Context<Self>,
 757    ) -> Option<Entity<Editor>>
 758    where
 759        Self: Sized,
 760    {
 761        Some(cx.new(|cx| self.clone(window, cx)))
 762    }
 763
 764    fn set_nav_history(
 765        &mut self,
 766        history: ItemNavHistory,
 767        _window: &mut Window,
 768        _: &mut Context<Self>,
 769    ) {
 770        self.nav_history = Some(history);
 771    }
 772
 773    fn discarded(&self, _project: Entity<Project>, _: &mut Window, cx: &mut Context<Self>) {
 774        for buffer in self.buffer().clone().read(cx).all_buffers() {
 775            buffer.update(cx, |buffer, cx| buffer.discarded(cx))
 776        }
 777    }
 778
 779    fn deactivated(&mut self, _: &mut Window, cx: &mut Context<Self>) {
 780        let selection = self.selections.newest_anchor();
 781        self.push_to_nav_history(selection.head(), None, true, false, cx);
 782    }
 783
 784    fn workspace_deactivated(&mut self, _: &mut Window, cx: &mut Context<Self>) {
 785        self.hide_hovered_link(cx);
 786    }
 787
 788    fn is_dirty(&self, cx: &App) -> bool {
 789        self.buffer().read(cx).read(cx).is_dirty()
 790    }
 791
 792    fn has_deleted_file(&self, cx: &App) -> bool {
 793        self.buffer().read(cx).read(cx).has_deleted_file()
 794    }
 795
 796    fn has_conflict(&self, cx: &App) -> bool {
 797        self.buffer().read(cx).read(cx).has_conflict()
 798    }
 799
 800    fn can_save(&self, cx: &App) -> bool {
 801        let buffer = &self.buffer().read(cx);
 802        if let Some(buffer) = buffer.as_singleton() {
 803            buffer.read(cx).project_path(cx).is_some()
 804        } else {
 805            true
 806        }
 807    }
 808
 809    fn save(
 810        &mut self,
 811        options: SaveOptions,
 812        project: Entity<Project>,
 813        window: &mut Window,
 814        cx: &mut Context<Self>,
 815    ) -> Task<Result<()>> {
 816        self.report_editor_event("Editor Saved", None, cx);
 817        let buffers = self.buffer().clone().read(cx).all_buffers();
 818        let buffers = buffers
 819            .into_iter()
 820            .map(|handle| handle.read(cx).base_buffer().unwrap_or(handle.clone()))
 821            .collect::<HashSet<_>>();
 822
 823        // let mut buffers_to_save =
 824        let buffers_to_save = if self.buffer.read(cx).is_singleton() && !options.autosave {
 825            buffers.clone()
 826        } else {
 827            buffers
 828                .iter()
 829                .filter(|buffer| buffer.read(cx).is_dirty())
 830                .cloned()
 831                .collect()
 832        };
 833
 834        cx.spawn_in(window, async move |this, cx| {
 835            if options.format {
 836                this.update_in(cx, |editor, window, cx| {
 837                    editor.perform_format(
 838                        project.clone(),
 839                        FormatTrigger::Save,
 840                        FormatTarget::Buffers(buffers_to_save.clone()),
 841                        window,
 842                        cx,
 843                    )
 844                })?
 845                .await?;
 846            }
 847
 848            if !buffers_to_save.is_empty() {
 849                project
 850                    .update(cx, |project, cx| {
 851                        project.save_buffers(buffers_to_save.clone(), cx)
 852                    })?
 853                    .await?;
 854            }
 855
 856            // Notify about clean buffers for language server events
 857            let buffers_that_were_not_saved: Vec<_> = buffers
 858                .into_iter()
 859                .filter(|b| !buffers_to_save.contains(b))
 860                .collect();
 861
 862            for buffer in buffers_that_were_not_saved {
 863                buffer
 864                    .update(cx, |buffer, cx| {
 865                        let version = buffer.saved_version().clone();
 866                        let mtime = buffer.saved_mtime();
 867                        buffer.did_save(version, mtime, cx);
 868                    })
 869                    .ok();
 870            }
 871
 872            Ok(())
 873        })
 874    }
 875
 876    fn save_as(
 877        &mut self,
 878        project: Entity<Project>,
 879        path: ProjectPath,
 880        _: &mut Window,
 881        cx: &mut Context<Self>,
 882    ) -> Task<Result<()>> {
 883        let buffer = self
 884            .buffer()
 885            .read(cx)
 886            .as_singleton()
 887            .expect("cannot call save_as on an excerpt list");
 888
 889        let file_extension = path
 890            .path
 891            .extension()
 892            .map(|a| a.to_string_lossy().to_string());
 893        self.report_editor_event("Editor Saved", file_extension, cx);
 894
 895        project.update(cx, |project, cx| project.save_buffer_as(buffer, path, cx))
 896    }
 897
 898    fn reload(
 899        &mut self,
 900        project: Entity<Project>,
 901        window: &mut Window,
 902        cx: &mut Context<Self>,
 903    ) -> Task<Result<()>> {
 904        let buffer = self.buffer().clone();
 905        let buffers = self.buffer.read(cx).all_buffers();
 906        let reload_buffers =
 907            project.update(cx, |project, cx| project.reload_buffers(buffers, true, cx));
 908        cx.spawn_in(window, async move |this, cx| {
 909            let transaction = reload_buffers.log_err().await;
 910            this.update(cx, |editor, cx| {
 911                editor.request_autoscroll(Autoscroll::fit(), cx)
 912            })?;
 913            buffer
 914                .update(cx, |buffer, cx| {
 915                    if let Some(transaction) = transaction {
 916                        if !buffer.is_singleton() {
 917                            buffer.push_transaction(&transaction.0, cx);
 918                        }
 919                    }
 920                })
 921                .ok();
 922            Ok(())
 923        })
 924    }
 925
 926    fn as_searchable(&self, handle: &Entity<Self>) -> Option<Box<dyn SearchableItemHandle>> {
 927        Some(Box::new(handle.clone()))
 928    }
 929
 930    fn pixel_position_of_cursor(&self, _: &App) -> Option<gpui::Point<Pixels>> {
 931        self.pixel_position_of_newest_cursor
 932    }
 933
 934    fn breadcrumb_location(&self, _: &App) -> ToolbarItemLocation {
 935        if self.show_breadcrumbs {
 936            ToolbarItemLocation::PrimaryLeft
 937        } else {
 938            ToolbarItemLocation::Hidden
 939        }
 940    }
 941
 942    fn breadcrumbs(&self, variant: &Theme, cx: &App) -> Option<Vec<BreadcrumbText>> {
 943        let cursor = self.selections.newest_anchor().head();
 944        let multibuffer = &self.buffer().read(cx);
 945        let (buffer_id, symbols) =
 946            multibuffer.symbols_containing(cursor, Some(variant.syntax()), cx)?;
 947        let buffer = multibuffer.buffer(buffer_id)?;
 948
 949        let buffer = buffer.read(cx);
 950        let text = self.breadcrumb_header.clone().unwrap_or_else(|| {
 951            buffer
 952                .snapshot()
 953                .resolve_file_path(
 954                    cx,
 955                    self.project
 956                        .as_ref()
 957                        .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
 958                        .unwrap_or_default(),
 959                )
 960                .map(|path| path.to_string_lossy().to_string())
 961                .unwrap_or_else(|| {
 962                    if multibuffer.is_singleton() {
 963                        multibuffer.title(cx).to_string()
 964                    } else {
 965                        "untitled".to_string()
 966                    }
 967                })
 968        });
 969
 970        let settings = ThemeSettings::get_global(cx);
 971
 972        let mut breadcrumbs = vec![BreadcrumbText {
 973            text,
 974            highlights: None,
 975            font: Some(settings.buffer_font.clone()),
 976        }];
 977
 978        breadcrumbs.extend(symbols.into_iter().map(|symbol| BreadcrumbText {
 979            text: symbol.text,
 980            highlights: Some(symbol.highlight_ranges),
 981            font: Some(settings.buffer_font.clone()),
 982        }));
 983        Some(breadcrumbs)
 984    }
 985
 986    fn added_to_workspace(
 987        &mut self,
 988        workspace: &mut Workspace,
 989        _window: &mut Window,
 990        cx: &mut Context<Self>,
 991    ) {
 992        self.workspace = Some((workspace.weak_handle(), workspace.database_id()));
 993        if let Some(workspace) = &workspace.weak_handle().upgrade() {
 994            cx.subscribe(&workspace, |editor, _, event: &workspace::Event, _cx| {
 995                if matches!(event, workspace::Event::ModalOpened) {
 996                    editor.mouse_context_menu.take();
 997                    editor.inline_blame_popover.take();
 998                }
 999            })
1000            .detach();
1001        }
1002    }
1003
1004    fn to_item_events(event: &EditorEvent, mut f: impl FnMut(ItemEvent)) {
1005        match event {
1006            EditorEvent::Closed => f(ItemEvent::CloseItem),
1007
1008            EditorEvent::Saved | EditorEvent::TitleChanged => {
1009                f(ItemEvent::UpdateTab);
1010                f(ItemEvent::UpdateBreadcrumbs);
1011            }
1012
1013            EditorEvent::Reparsed(_) => {
1014                f(ItemEvent::UpdateBreadcrumbs);
1015            }
1016
1017            EditorEvent::SelectionsChanged { local } if *local => {
1018                f(ItemEvent::UpdateBreadcrumbs);
1019            }
1020
1021            EditorEvent::DirtyChanged => {
1022                f(ItemEvent::UpdateTab);
1023            }
1024
1025            EditorEvent::BufferEdited => {
1026                f(ItemEvent::Edit);
1027                f(ItemEvent::UpdateBreadcrumbs);
1028            }
1029
1030            EditorEvent::ExcerptsAdded { .. } | EditorEvent::ExcerptsRemoved { .. } => {
1031                f(ItemEvent::Edit);
1032            }
1033
1034            _ => {}
1035        }
1036    }
1037
1038    fn preserve_preview(&self, cx: &App) -> bool {
1039        self.buffer.read(cx).preserve_preview(cx)
1040    }
1041}
1042
1043impl SerializableItem for Editor {
1044    fn serialized_item_kind() -> &'static str {
1045        "Editor"
1046    }
1047
1048    fn cleanup(
1049        workspace_id: WorkspaceId,
1050        alive_items: Vec<ItemId>,
1051        _window: &mut Window,
1052        cx: &mut App,
1053    ) -> Task<Result<()>> {
1054        workspace::delete_unloaded_items(alive_items, workspace_id, "editors", &DB, cx)
1055    }
1056
1057    fn deserialize(
1058        project: Entity<Project>,
1059        workspace: WeakEntity<Workspace>,
1060        workspace_id: workspace::WorkspaceId,
1061        item_id: ItemId,
1062        window: &mut Window,
1063        cx: &mut App,
1064    ) -> Task<Result<Entity<Self>>> {
1065        let serialized_editor = match DB
1066            .get_serialized_editor(item_id, workspace_id)
1067            .context("Failed to query editor state")
1068        {
1069            Ok(Some(serialized_editor)) => {
1070                if ProjectSettings::get_global(cx)
1071                    .session
1072                    .restore_unsaved_buffers
1073                {
1074                    serialized_editor
1075                } else {
1076                    SerializedEditor {
1077                        abs_path: serialized_editor.abs_path,
1078                        contents: None,
1079                        language: None,
1080                        mtime: None,
1081                    }
1082                }
1083            }
1084            Ok(None) => {
1085                return Task::ready(Err(anyhow!("No path or contents found for buffer")));
1086            }
1087            Err(error) => {
1088                return Task::ready(Err(error));
1089            }
1090        };
1091
1092        match serialized_editor {
1093            SerializedEditor {
1094                abs_path: None,
1095                contents: Some(contents),
1096                language,
1097                ..
1098            } => window.spawn(cx, {
1099                let project = project.clone();
1100                async move |cx| {
1101                    let language_registry =
1102                        project.read_with(cx, |project, _| project.languages().clone())?;
1103
1104                    let language = if let Some(language_name) = language {
1105                        // We don't fail here, because we'd rather not set the language if the name changed
1106                        // than fail to restore the buffer.
1107                        language_registry
1108                            .language_for_name(&language_name)
1109                            .await
1110                            .ok()
1111                    } else {
1112                        None
1113                    };
1114
1115                    // First create the empty buffer
1116                    let buffer = project
1117                        .update(cx, |project, cx| project.create_buffer(cx))?
1118                        .await?;
1119
1120                    // Then set the text so that the dirty bit is set correctly
1121                    buffer.update(cx, |buffer, cx| {
1122                        buffer.set_language_registry(language_registry);
1123                        if let Some(language) = language {
1124                            buffer.set_language(Some(language), cx);
1125                        }
1126                        buffer.set_text(contents, cx);
1127                        if let Some(entry) = buffer.peek_undo_stack() {
1128                            buffer.forget_transaction(entry.transaction_id());
1129                        }
1130                    })?;
1131
1132                    cx.update(|window, cx| {
1133                        cx.new(|cx| {
1134                            let mut editor = Editor::for_buffer(buffer, Some(project), window, cx);
1135
1136                            editor.read_metadata_from_db(item_id, workspace_id, window, cx);
1137                            editor
1138                        })
1139                    })
1140                }
1141            }),
1142            SerializedEditor {
1143                abs_path: Some(abs_path),
1144                contents,
1145                mtime,
1146                ..
1147            } => {
1148                let opened_buffer = project.update(cx, |project, cx| {
1149                    let (worktree, path) = project.find_worktree(&abs_path, cx)?;
1150                    let project_path = ProjectPath {
1151                        worktree_id: worktree.read(cx).id(),
1152                        path: path.into(),
1153                    };
1154                    Some(project.open_path(project_path, cx))
1155                });
1156
1157                match opened_buffer {
1158                    Some(opened_buffer) => {
1159                        window.spawn(cx, async move |cx| {
1160                            let (_, buffer) = opened_buffer.await?;
1161
1162                            // This is a bit wasteful: we're loading the whole buffer from
1163                            // disk and then overwrite the content.
1164                            // But for now, it keeps the implementation of the content serialization
1165                            // simple, because we don't have to persist all of the metadata that we get
1166                            // by loading the file (git diff base, ...).
1167                            if let Some(buffer_text) = contents {
1168                                buffer.update(cx, |buffer, cx| {
1169                                    // If we did restore an mtime, we want to store it on the buffer
1170                                    // so that the next edit will mark the buffer as dirty/conflicted.
1171                                    if mtime.is_some() {
1172                                        buffer.did_reload(
1173                                            buffer.version(),
1174                                            buffer.line_ending(),
1175                                            mtime,
1176                                            cx,
1177                                        );
1178                                    }
1179                                    buffer.set_text(buffer_text, cx);
1180                                    if let Some(entry) = buffer.peek_undo_stack() {
1181                                        buffer.forget_transaction(entry.transaction_id());
1182                                    }
1183                                })?;
1184                            }
1185
1186                            cx.update(|window, cx| {
1187                                cx.new(|cx| {
1188                                    let mut editor =
1189                                        Editor::for_buffer(buffer, Some(project), window, cx);
1190
1191                                    editor.read_metadata_from_db(item_id, workspace_id, window, cx);
1192                                    editor
1193                                })
1194                            })
1195                        })
1196                    }
1197                    None => {
1198                        let open_by_abs_path = workspace.update(cx, |workspace, cx| {
1199                            workspace.open_abs_path(
1200                                abs_path.clone(),
1201                                OpenOptions {
1202                                    visible: Some(OpenVisible::None),
1203                                    ..Default::default()
1204                                },
1205                                window,
1206                                cx,
1207                            )
1208                        });
1209                        window.spawn(cx, async move |cx| {
1210                            let editor = open_by_abs_path?.await?.downcast::<Editor>().with_context(|| format!("Failed to downcast to Editor after opening abs path {abs_path:?}"))?;
1211                            editor.update_in(cx, |editor, window, cx| {
1212                                editor.read_metadata_from_db(item_id, workspace_id, window, cx);
1213                            })?;
1214                            Ok(editor)
1215                        })
1216                    }
1217                }
1218            }
1219            SerializedEditor {
1220                abs_path: None,
1221                contents: None,
1222                ..
1223            } => Task::ready(Err(anyhow!("No path or contents found for buffer"))),
1224        }
1225    }
1226
1227    fn serialize(
1228        &mut self,
1229        workspace: &mut Workspace,
1230        item_id: ItemId,
1231        closing: bool,
1232        window: &mut Window,
1233        cx: &mut Context<Self>,
1234    ) -> Option<Task<Result<()>>> {
1235        if self.mode.is_minimap() {
1236            return None;
1237        }
1238        let mut serialize_dirty_buffers = self.serialize_dirty_buffers;
1239
1240        let project = self.project.clone()?;
1241        if project.read(cx).visible_worktrees(cx).next().is_none() {
1242            // If we don't have a worktree, we don't serialize, because
1243            // projects without worktrees aren't deserialized.
1244            serialize_dirty_buffers = false;
1245        }
1246
1247        if closing && !serialize_dirty_buffers {
1248            return None;
1249        }
1250
1251        let workspace_id = workspace.database_id()?;
1252
1253        let buffer = self.buffer().read(cx).as_singleton()?;
1254
1255        let abs_path = buffer.read(cx).file().and_then(|file| {
1256            let worktree_id = file.worktree_id(cx);
1257            project
1258                .read(cx)
1259                .worktree_for_id(worktree_id, cx)
1260                .and_then(|worktree| worktree.read(cx).absolutize(&file.path()).ok())
1261                .or_else(|| {
1262                    let full_path = file.full_path(cx);
1263                    let project_path = project.read(cx).find_project_path(&full_path, cx)?;
1264                    project.read(cx).absolute_path(&project_path, cx)
1265                })
1266        });
1267
1268        let is_dirty = buffer.read(cx).is_dirty();
1269        let mtime = buffer.read(cx).saved_mtime();
1270
1271        let snapshot = buffer.read(cx).snapshot();
1272
1273        Some(cx.spawn_in(window, async move |_this, cx| {
1274            cx.background_spawn(async move {
1275                let (contents, language) = if serialize_dirty_buffers && is_dirty {
1276                    let contents = snapshot.text();
1277                    let language = snapshot.language().map(|lang| lang.name().to_string());
1278                    (Some(contents), language)
1279                } else {
1280                    (None, None)
1281                };
1282
1283                let editor = SerializedEditor {
1284                    abs_path,
1285                    contents,
1286                    language,
1287                    mtime,
1288                };
1289                log::debug!("Serializing editor {item_id:?} in workspace {workspace_id:?}");
1290                DB.save_serialized_editor(item_id, workspace_id, editor)
1291                    .await
1292                    .context("failed to save serialized editor")
1293            })
1294            .await
1295            .context("failed to save contents of buffer")?;
1296
1297            Ok(())
1298        }))
1299    }
1300
1301    fn should_serialize(&self, event: &Self::Event) -> bool {
1302        matches!(
1303            event,
1304            EditorEvent::Saved | EditorEvent::DirtyChanged | EditorEvent::BufferEdited
1305        )
1306    }
1307}
1308
1309#[derive(Debug, Default)]
1310struct EditorRestorationData {
1311    entries: HashMap<PathBuf, RestorationData>,
1312}
1313
1314#[derive(Default, Debug)]
1315pub struct RestorationData {
1316    pub scroll_position: (BufferRow, gpui::Point<f32>),
1317    pub folds: Vec<Range<Point>>,
1318    pub selections: Vec<Range<Point>>,
1319}
1320
1321impl ProjectItem for Editor {
1322    type Item = Buffer;
1323
1324    fn project_item_kind() -> Option<ProjectItemKind> {
1325        Some(ProjectItemKind("Editor"))
1326    }
1327
1328    fn for_project_item(
1329        project: Entity<Project>,
1330        pane: Option<&Pane>,
1331        buffer: Entity<Buffer>,
1332        window: &mut Window,
1333        cx: &mut Context<Self>,
1334    ) -> Self {
1335        let mut editor = Self::for_buffer(buffer.clone(), Some(project), window, cx);
1336        if let Some((excerpt_id, buffer_id, snapshot)) =
1337            editor.buffer().read(cx).snapshot(cx).as_singleton()
1338        {
1339            if WorkspaceSettings::get(None, cx).restore_on_file_reopen {
1340                if let Some(restoration_data) = Self::project_item_kind()
1341                    .and_then(|kind| pane.as_ref()?.project_item_restoration_data.get(&kind))
1342                    .and_then(|data| data.downcast_ref::<EditorRestorationData>())
1343                    .and_then(|data| {
1344                        let file = project::File::from_dyn(buffer.read(cx).file())?;
1345                        data.entries.get(&file.abs_path(cx))
1346                    })
1347                {
1348                    editor.fold_ranges(
1349                        clip_ranges(&restoration_data.folds, &snapshot),
1350                        false,
1351                        window,
1352                        cx,
1353                    );
1354                    if !restoration_data.selections.is_empty() {
1355                        editor.change_selections(None, window, cx, |s| {
1356                            s.select_ranges(clip_ranges(&restoration_data.selections, &snapshot));
1357                        });
1358                    }
1359                    let (top_row, offset) = restoration_data.scroll_position;
1360                    let anchor = Anchor::in_buffer(
1361                        *excerpt_id,
1362                        buffer_id,
1363                        snapshot.anchor_before(Point::new(top_row, 0)),
1364                    );
1365                    editor.set_scroll_anchor(ScrollAnchor { anchor, offset }, window, cx);
1366                }
1367            }
1368        }
1369
1370        editor
1371    }
1372}
1373
1374fn clip_ranges<'a>(
1375    original: impl IntoIterator<Item = &'a Range<Point>> + 'a,
1376    snapshot: &'a BufferSnapshot,
1377) -> Vec<Range<Point>> {
1378    original
1379        .into_iter()
1380        .map(|range| {
1381            snapshot.clip_point(range.start, Bias::Left)
1382                ..snapshot.clip_point(range.end, Bias::Right)
1383        })
1384        .collect()
1385}
1386
1387impl EventEmitter<SearchEvent> for Editor {}
1388
1389impl Editor {
1390    pub fn update_restoration_data(
1391        &self,
1392        cx: &mut Context<Self>,
1393        write: impl for<'a> FnOnce(&'a mut RestorationData) + 'static,
1394    ) {
1395        if self.mode.is_minimap() || !WorkspaceSettings::get(None, cx).restore_on_file_reopen {
1396            return;
1397        }
1398
1399        let editor = cx.entity();
1400        cx.defer(move |cx| {
1401            editor.update(cx, |editor, cx| {
1402                let kind = Editor::project_item_kind()?;
1403                let pane = editor.workspace()?.read(cx).pane_for(&cx.entity())?;
1404                let buffer = editor.buffer().read(cx).as_singleton()?;
1405                let file_abs_path = project::File::from_dyn(buffer.read(cx).file())?.abs_path(cx);
1406                pane.update(cx, |pane, _| {
1407                    let data = pane
1408                        .project_item_restoration_data
1409                        .entry(kind)
1410                        .or_insert_with(|| Box::new(EditorRestorationData::default()) as Box<_>);
1411                    let data = match data.downcast_mut::<EditorRestorationData>() {
1412                        Some(data) => data,
1413                        None => {
1414                            *data = Box::new(EditorRestorationData::default());
1415                            data.downcast_mut::<EditorRestorationData>()
1416                                .expect("just written the type downcasted to")
1417                        }
1418                    };
1419
1420                    let data = data.entries.entry(file_abs_path).or_default();
1421                    write(data);
1422                    Some(())
1423                })
1424            });
1425        });
1426    }
1427}
1428
1429pub(crate) enum BufferSearchHighlights {}
1430impl SearchableItem for Editor {
1431    type Match = Range<Anchor>;
1432
1433    fn get_matches(&self, _window: &mut Window, _: &mut App) -> Vec<Range<Anchor>> {
1434        self.background_highlights
1435            .get(&HighlightKey::Type(TypeId::of::<BufferSearchHighlights>()))
1436            .map_or(Vec::new(), |(_color, ranges)| {
1437                ranges.iter().cloned().collect()
1438            })
1439    }
1440
1441    fn clear_matches(&mut self, _: &mut Window, cx: &mut Context<Self>) {
1442        if self
1443            .clear_background_highlights::<BufferSearchHighlights>(cx)
1444            .is_some()
1445        {
1446            cx.emit(SearchEvent::MatchesInvalidated);
1447        }
1448    }
1449
1450    fn update_matches(
1451        &mut self,
1452        matches: &[Range<Anchor>],
1453        _: &mut Window,
1454        cx: &mut Context<Self>,
1455    ) {
1456        let existing_range = self
1457            .background_highlights
1458            .get(&HighlightKey::Type(TypeId::of::<BufferSearchHighlights>()))
1459            .map(|(_, range)| range.as_ref());
1460        let updated = existing_range != Some(matches);
1461        self.highlight_background::<BufferSearchHighlights>(
1462            matches,
1463            |theme| theme.colors().search_match_background,
1464            cx,
1465        );
1466        if updated {
1467            cx.emit(SearchEvent::MatchesInvalidated);
1468        }
1469    }
1470
1471    fn has_filtered_search_ranges(&mut self) -> bool {
1472        self.has_background_highlights::<SearchWithinRange>()
1473    }
1474
1475    fn toggle_filtered_search_ranges(
1476        &mut self,
1477        enabled: bool,
1478        _: &mut Window,
1479        cx: &mut Context<Self>,
1480    ) {
1481        if self.has_filtered_search_ranges() {
1482            self.previous_search_ranges = self
1483                .clear_background_highlights::<SearchWithinRange>(cx)
1484                .map(|(_, ranges)| ranges)
1485        }
1486
1487        if !enabled {
1488            return;
1489        }
1490
1491        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
1492        if ranges.iter().any(|s| s.start != s.end) {
1493            self.set_search_within_ranges(&ranges, cx);
1494        } else if let Some(previous_search_ranges) = self.previous_search_ranges.take() {
1495            self.set_search_within_ranges(&previous_search_ranges, cx)
1496        }
1497    }
1498
1499    fn supported_options(&self) -> SearchOptions {
1500        if self.in_project_search {
1501            SearchOptions {
1502                case: true,
1503                word: true,
1504                regex: true,
1505                replacement: false,
1506                selection: false,
1507                find_in_results: true,
1508            }
1509        } else {
1510            SearchOptions {
1511                case: true,
1512                word: true,
1513                regex: true,
1514                replacement: true,
1515                selection: true,
1516                find_in_results: false,
1517            }
1518        }
1519    }
1520
1521    fn query_suggestion(&mut self, window: &mut Window, cx: &mut Context<Self>) -> String {
1522        let setting = EditorSettings::get_global(cx).seed_search_query_from_cursor;
1523        let snapshot = &self.snapshot(window, cx).buffer_snapshot;
1524        let selection = self.selections.newest_adjusted(cx);
1525
1526        match setting {
1527            SeedQuerySetting::Never => String::new(),
1528            SeedQuerySetting::Selection | SeedQuerySetting::Always if !selection.is_empty() => {
1529                let text: String = snapshot
1530                    .text_for_range(selection.start..selection.end)
1531                    .collect();
1532                if text.contains('\n') {
1533                    String::new()
1534                } else {
1535                    text
1536                }
1537            }
1538            SeedQuerySetting::Selection => String::new(),
1539            SeedQuerySetting::Always => {
1540                let (range, kind) = snapshot.surrounding_word(selection.start, true);
1541                if kind == Some(CharKind::Word) {
1542                    let text: String = snapshot.text_for_range(range).collect();
1543                    if !text.trim().is_empty() {
1544                        return text;
1545                    }
1546                }
1547                String::new()
1548            }
1549        }
1550    }
1551
1552    fn activate_match(
1553        &mut self,
1554        index: usize,
1555        matches: &[Range<Anchor>],
1556        window: &mut Window,
1557        cx: &mut Context<Self>,
1558    ) {
1559        self.unfold_ranges(&[matches[index].clone()], false, true, cx);
1560        let range = self.range_for_match(&matches[index]);
1561        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
1562            s.select_ranges([range]);
1563        })
1564    }
1565
1566    fn select_matches(
1567        &mut self,
1568        matches: &[Self::Match],
1569        window: &mut Window,
1570        cx: &mut Context<Self>,
1571    ) {
1572        self.unfold_ranges(matches, false, false, cx);
1573        self.change_selections(None, window, cx, |s| {
1574            s.select_ranges(matches.iter().cloned())
1575        });
1576    }
1577    fn replace(
1578        &mut self,
1579        identifier: &Self::Match,
1580        query: &SearchQuery,
1581        window: &mut Window,
1582        cx: &mut Context<Self>,
1583    ) {
1584        let text = self.buffer.read(cx);
1585        let text = text.snapshot(cx);
1586        let text = text.text_for_range(identifier.clone()).collect::<Vec<_>>();
1587        let text: Cow<_> = if text.len() == 1 {
1588            text.first().cloned().unwrap().into()
1589        } else {
1590            let joined_chunks = text.join("");
1591            joined_chunks.into()
1592        };
1593
1594        if let Some(replacement) = query.replacement_for(&text) {
1595            self.transact(window, cx, |this, _, cx| {
1596                this.edit([(identifier.clone(), Arc::from(&*replacement))], cx);
1597            });
1598        }
1599    }
1600    fn replace_all(
1601        &mut self,
1602        matches: &mut dyn Iterator<Item = &Self::Match>,
1603        query: &SearchQuery,
1604        window: &mut Window,
1605        cx: &mut Context<Self>,
1606    ) {
1607        let text = self.buffer.read(cx);
1608        let text = text.snapshot(cx);
1609        let mut edits = vec![];
1610        let mut last_point: Option<Point> = None;
1611
1612        for m in matches {
1613            let point = m.start.to_point(&text);
1614            let text = text.text_for_range(m.clone()).collect::<Vec<_>>();
1615
1616            // Check if the row for the current match is different from the last
1617            // match. If that's not the case and we're still replacing matches
1618            // in the same row/line, skip this match if the `one_match_per_line`
1619            // option is enabled.
1620            if last_point.is_none() {
1621                last_point = Some(point);
1622            } else if last_point.is_some() && point.row != last_point.unwrap().row {
1623                last_point = Some(point);
1624            } else if query.one_match_per_line().is_some_and(|enabled| enabled) {
1625                continue;
1626            }
1627
1628            let text: Cow<_> = if text.len() == 1 {
1629                text.first().cloned().unwrap().into()
1630            } else {
1631                let joined_chunks = text.join("");
1632                joined_chunks.into()
1633            };
1634
1635            if let Some(replacement) = query.replacement_for(&text) {
1636                edits.push((m.clone(), Arc::from(&*replacement)));
1637            }
1638        }
1639
1640        if !edits.is_empty() {
1641            self.transact(window, cx, |this, _, cx| {
1642                this.edit(edits, cx);
1643            });
1644        }
1645    }
1646    fn match_index_for_direction(
1647        &mut self,
1648        matches: &[Range<Anchor>],
1649        current_index: usize,
1650        direction: Direction,
1651        count: usize,
1652        _: &mut Window,
1653        cx: &mut Context<Self>,
1654    ) -> usize {
1655        let buffer = self.buffer().read(cx).snapshot(cx);
1656        let current_index_position = if self.selections.disjoint_anchors().len() == 1 {
1657            self.selections.newest_anchor().head()
1658        } else {
1659            matches[current_index].start
1660        };
1661
1662        let mut count = count % matches.len();
1663        if count == 0 {
1664            return current_index;
1665        }
1666        match direction {
1667            Direction::Next => {
1668                if matches[current_index]
1669                    .start
1670                    .cmp(&current_index_position, &buffer)
1671                    .is_gt()
1672                {
1673                    count -= 1
1674                }
1675
1676                (current_index + count) % matches.len()
1677            }
1678            Direction::Prev => {
1679                if matches[current_index]
1680                    .end
1681                    .cmp(&current_index_position, &buffer)
1682                    .is_lt()
1683                {
1684                    count -= 1;
1685                }
1686
1687                if current_index >= count {
1688                    current_index - count
1689                } else {
1690                    matches.len() - (count - current_index)
1691                }
1692            }
1693        }
1694    }
1695
1696    fn find_matches(
1697        &mut self,
1698        query: Arc<project::search::SearchQuery>,
1699        _: &mut Window,
1700        cx: &mut Context<Self>,
1701    ) -> Task<Vec<Range<Anchor>>> {
1702        let buffer = self.buffer().read(cx).snapshot(cx);
1703        let search_within_ranges = self
1704            .background_highlights
1705            .get(&HighlightKey::Type(TypeId::of::<SearchWithinRange>()))
1706            .map_or(vec![], |(_color, ranges)| {
1707                ranges.iter().cloned().collect::<Vec<_>>()
1708            });
1709
1710        cx.background_spawn(async move {
1711            let mut ranges = Vec::new();
1712
1713            let search_within_ranges = if search_within_ranges.is_empty() {
1714                vec![buffer.anchor_before(0)..buffer.anchor_after(buffer.len())]
1715            } else {
1716                search_within_ranges
1717            };
1718
1719            for range in search_within_ranges {
1720                for (search_buffer, search_range, excerpt_id, deleted_hunk_anchor) in
1721                    buffer.range_to_buffer_ranges_with_deleted_hunks(range)
1722                {
1723                    ranges.extend(
1724                        query
1725                            .search(search_buffer, Some(search_range.clone()))
1726                            .await
1727                            .into_iter()
1728                            .map(|match_range| {
1729                                if let Some(deleted_hunk_anchor) = deleted_hunk_anchor {
1730                                    let start = search_buffer
1731                                        .anchor_after(search_range.start + match_range.start);
1732                                    let end = search_buffer
1733                                        .anchor_before(search_range.start + match_range.end);
1734                                    Anchor {
1735                                        diff_base_anchor: Some(start),
1736                                        ..deleted_hunk_anchor
1737                                    }..Anchor {
1738                                        diff_base_anchor: Some(end),
1739                                        ..deleted_hunk_anchor
1740                                    }
1741                                } else {
1742                                    let start = search_buffer
1743                                        .anchor_after(search_range.start + match_range.start);
1744                                    let end = search_buffer
1745                                        .anchor_before(search_range.start + match_range.end);
1746                                    Anchor::range_in_buffer(
1747                                        excerpt_id,
1748                                        search_buffer.remote_id(),
1749                                        start..end,
1750                                    )
1751                                }
1752                            }),
1753                    );
1754                }
1755            }
1756
1757            ranges
1758        })
1759    }
1760
1761    fn active_match_index(
1762        &mut self,
1763        direction: Direction,
1764        matches: &[Range<Anchor>],
1765        _: &mut Window,
1766        cx: &mut Context<Self>,
1767    ) -> Option<usize> {
1768        active_match_index(
1769            direction,
1770            matches,
1771            &self.selections.newest_anchor().head(),
1772            &self.buffer().read(cx).snapshot(cx),
1773        )
1774    }
1775
1776    fn search_bar_visibility_changed(&mut self, _: bool, _: &mut Window, _: &mut Context<Self>) {
1777        self.expect_bounds_change = self.last_bounds;
1778    }
1779}
1780
1781pub fn active_match_index(
1782    direction: Direction,
1783    ranges: &[Range<Anchor>],
1784    cursor: &Anchor,
1785    buffer: &MultiBufferSnapshot,
1786) -> Option<usize> {
1787    if ranges.is_empty() {
1788        None
1789    } else {
1790        let r = ranges.binary_search_by(|probe| {
1791            if probe.end.cmp(cursor, buffer).is_lt() {
1792                Ordering::Less
1793            } else if probe.start.cmp(cursor, buffer).is_gt() {
1794                Ordering::Greater
1795            } else {
1796                Ordering::Equal
1797            }
1798        });
1799        match direction {
1800            Direction::Prev => match r {
1801                Ok(i) => Some(i),
1802                Err(i) => Some(i.saturating_sub(1)),
1803            },
1804            Direction::Next => match r {
1805                Ok(i) | Err(i) => Some(cmp::min(i, ranges.len() - 1)),
1806            },
1807        }
1808    }
1809}
1810
1811pub fn entry_label_color(selected: bool) -> Color {
1812    if selected {
1813        Color::Default
1814    } else {
1815        Color::Muted
1816    }
1817}
1818
1819pub fn entry_diagnostic_aware_icon_name_and_color(
1820    diagnostic_severity: Option<DiagnosticSeverity>,
1821) -> Option<(IconName, Color)> {
1822    match diagnostic_severity {
1823        Some(DiagnosticSeverity::ERROR) => Some((IconName::X, Color::Error)),
1824        Some(DiagnosticSeverity::WARNING) => Some((IconName::Triangle, Color::Warning)),
1825        _ => None,
1826    }
1827}
1828
1829pub fn entry_diagnostic_aware_icon_decoration_and_color(
1830    diagnostic_severity: Option<DiagnosticSeverity>,
1831) -> Option<(IconDecorationKind, Color)> {
1832    match diagnostic_severity {
1833        Some(DiagnosticSeverity::ERROR) => Some((IconDecorationKind::X, Color::Error)),
1834        Some(DiagnosticSeverity::WARNING) => Some((IconDecorationKind::Triangle, Color::Warning)),
1835        _ => None,
1836    }
1837}
1838
1839pub fn entry_git_aware_label_color(git_status: GitSummary, ignored: bool, selected: bool) -> Color {
1840    let tracked = git_status.index + git_status.worktree;
1841    if ignored {
1842        Color::Ignored
1843    } else if git_status.conflict > 0 {
1844        Color::Conflict
1845    } else if tracked.modified > 0 {
1846        Color::Modified
1847    } else if tracked.added > 0 || git_status.untracked > 0 {
1848        Color::Created
1849    } else {
1850        entry_label_color(selected)
1851    }
1852}
1853
1854fn path_for_buffer<'a>(
1855    buffer: &Entity<MultiBuffer>,
1856    height: usize,
1857    include_filename: bool,
1858    cx: &'a App,
1859) -> Option<Cow<'a, Path>> {
1860    let file = buffer.read(cx).as_singleton()?.read(cx).file()?;
1861    path_for_file(file.as_ref(), height, include_filename, cx)
1862}
1863
1864fn path_for_file<'a>(
1865    file: &'a dyn language::File,
1866    mut height: usize,
1867    include_filename: bool,
1868    cx: &'a App,
1869) -> Option<Cow<'a, Path>> {
1870    // Ensure we always render at least the filename.
1871    height += 1;
1872
1873    let mut prefix = file.path().as_ref();
1874    while height > 0 {
1875        if let Some(parent) = prefix.parent() {
1876            prefix = parent;
1877            height -= 1;
1878        } else {
1879            break;
1880        }
1881    }
1882
1883    // Here we could have just always used `full_path`, but that is very
1884    // allocation-heavy and so we try to use a `Cow<Path>` if we haven't
1885    // traversed all the way up to the worktree's root.
1886    if height > 0 {
1887        let full_path = file.full_path(cx);
1888        if include_filename {
1889            Some(full_path.into())
1890        } else {
1891            Some(full_path.parent()?.to_path_buf().into())
1892        }
1893    } else {
1894        let mut path = file.path().strip_prefix(prefix).ok()?;
1895        if !include_filename {
1896            path = path.parent()?;
1897        }
1898        Some(path.into())
1899    }
1900}
1901
1902#[cfg(test)]
1903mod tests {
1904    use crate::editor_tests::init_test;
1905    use fs::Fs;
1906
1907    use super::*;
1908    use fs::MTime;
1909    use gpui::{App, VisualTestContext};
1910    use language::{LanguageMatcher, TestFile};
1911    use project::FakeFs;
1912    use std::path::{Path, PathBuf};
1913    use util::path;
1914
1915    #[gpui::test]
1916    fn test_path_for_file(cx: &mut App) {
1917        let file = TestFile {
1918            path: Path::new("").into(),
1919            root_name: String::new(),
1920            local_root: None,
1921        };
1922        assert_eq!(path_for_file(&file, 0, false, cx), None);
1923    }
1924
1925    async fn deserialize_editor(
1926        item_id: ItemId,
1927        workspace_id: WorkspaceId,
1928        workspace: Entity<Workspace>,
1929        project: Entity<Project>,
1930        cx: &mut VisualTestContext,
1931    ) -> Entity<Editor> {
1932        workspace
1933            .update_in(cx, |workspace, window, cx| {
1934                let pane = workspace.active_pane();
1935                pane.update(cx, |_, cx| {
1936                    Editor::deserialize(
1937                        project.clone(),
1938                        workspace.weak_handle(),
1939                        workspace_id,
1940                        item_id,
1941                        window,
1942                        cx,
1943                    )
1944                })
1945            })
1946            .await
1947            .unwrap()
1948    }
1949
1950    fn rust_language() -> Arc<language::Language> {
1951        Arc::new(language::Language::new(
1952            language::LanguageConfig {
1953                name: "Rust".into(),
1954                matcher: LanguageMatcher {
1955                    path_suffixes: vec!["rs".to_string()],
1956                    ..Default::default()
1957                },
1958                ..Default::default()
1959            },
1960            Some(tree_sitter_rust::LANGUAGE.into()),
1961        ))
1962    }
1963
1964    #[gpui::test]
1965    async fn test_deserialize(cx: &mut gpui::TestAppContext) {
1966        init_test(cx, |_| {});
1967
1968        let fs = FakeFs::new(cx.executor());
1969        fs.insert_file(path!("/file.rs"), Default::default()).await;
1970
1971        // Test case 1: Deserialize with path and contents
1972        {
1973            let project = Project::test(fs.clone(), [path!("/file.rs").as_ref()], cx).await;
1974            let (workspace, cx) =
1975                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1976            let workspace_id = workspace::WORKSPACE_DB.next_id().await.unwrap();
1977            let item_id = 1234 as ItemId;
1978            let mtime = fs
1979                .metadata(Path::new(path!("/file.rs")))
1980                .await
1981                .unwrap()
1982                .unwrap()
1983                .mtime;
1984
1985            let serialized_editor = SerializedEditor {
1986                abs_path: Some(PathBuf::from(path!("/file.rs"))),
1987                contents: Some("fn main() {}".to_string()),
1988                language: Some("Rust".to_string()),
1989                mtime: Some(mtime),
1990            };
1991
1992            DB.save_serialized_editor(item_id, workspace_id, serialized_editor.clone())
1993                .await
1994                .unwrap();
1995
1996            let deserialized =
1997                deserialize_editor(item_id, workspace_id, workspace, project, cx).await;
1998
1999            deserialized.update(cx, |editor, cx| {
2000                assert_eq!(editor.text(cx), "fn main() {}");
2001                assert!(editor.is_dirty(cx));
2002                assert!(!editor.has_conflict(cx));
2003                let buffer = editor.buffer().read(cx).as_singleton().unwrap().read(cx);
2004                assert!(buffer.file().is_some());
2005            });
2006        }
2007
2008        // Test case 2: Deserialize with only path
2009        {
2010            let project = Project::test(fs.clone(), [path!("/file.rs").as_ref()], cx).await;
2011            let (workspace, cx) =
2012                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2013
2014            let workspace_id = workspace::WORKSPACE_DB.next_id().await.unwrap();
2015
2016            let item_id = 5678 as ItemId;
2017            let serialized_editor = SerializedEditor {
2018                abs_path: Some(PathBuf::from(path!("/file.rs"))),
2019                contents: None,
2020                language: None,
2021                mtime: None,
2022            };
2023
2024            DB.save_serialized_editor(item_id, workspace_id, serialized_editor)
2025                .await
2026                .unwrap();
2027
2028            let deserialized =
2029                deserialize_editor(item_id, workspace_id, workspace, project, cx).await;
2030
2031            deserialized.update(cx, |editor, cx| {
2032                assert_eq!(editor.text(cx), ""); // The file should be empty as per our initial setup
2033                assert!(!editor.is_dirty(cx));
2034                assert!(!editor.has_conflict(cx));
2035
2036                let buffer = editor.buffer().read(cx).as_singleton().unwrap().read(cx);
2037                assert!(buffer.file().is_some());
2038            });
2039        }
2040
2041        // Test case 3: Deserialize with no path (untitled buffer, with content and language)
2042        {
2043            let project = Project::test(fs.clone(), [path!("/file.rs").as_ref()], cx).await;
2044            // Add Rust to the language, so that we can restore the language of the buffer
2045            project.read_with(cx, |project, _| project.languages().add(rust_language()));
2046
2047            let (workspace, cx) =
2048                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2049
2050            let workspace_id = workspace::WORKSPACE_DB.next_id().await.unwrap();
2051
2052            let item_id = 9012 as ItemId;
2053            let serialized_editor = SerializedEditor {
2054                abs_path: None,
2055                contents: Some("hello".to_string()),
2056                language: Some("Rust".to_string()),
2057                mtime: None,
2058            };
2059
2060            DB.save_serialized_editor(item_id, workspace_id, serialized_editor)
2061                .await
2062                .unwrap();
2063
2064            let deserialized =
2065                deserialize_editor(item_id, workspace_id, workspace, project, cx).await;
2066
2067            deserialized.update(cx, |editor, cx| {
2068                assert_eq!(editor.text(cx), "hello");
2069                assert!(editor.is_dirty(cx)); // The editor should be dirty for an untitled buffer
2070
2071                let buffer = editor.buffer().read(cx).as_singleton().unwrap().read(cx);
2072                assert_eq!(
2073                    buffer.language().map(|lang| lang.name()),
2074                    Some("Rust".into())
2075                ); // Language should be set to Rust
2076                assert!(buffer.file().is_none()); // The buffer should not have an associated file
2077            });
2078        }
2079
2080        // Test case 4: Deserialize with path, content, and old mtime
2081        {
2082            let project = Project::test(fs.clone(), [path!("/file.rs").as_ref()], cx).await;
2083            let (workspace, cx) =
2084                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2085
2086            let workspace_id = workspace::WORKSPACE_DB.next_id().await.unwrap();
2087
2088            let item_id = 9345 as ItemId;
2089            let old_mtime = MTime::from_seconds_and_nanos(0, 50);
2090            let serialized_editor = SerializedEditor {
2091                abs_path: Some(PathBuf::from(path!("/file.rs"))),
2092                contents: Some("fn main() {}".to_string()),
2093                language: Some("Rust".to_string()),
2094                mtime: Some(old_mtime),
2095            };
2096
2097            DB.save_serialized_editor(item_id, workspace_id, serialized_editor)
2098                .await
2099                .unwrap();
2100
2101            let deserialized =
2102                deserialize_editor(item_id, workspace_id, workspace, project, cx).await;
2103
2104            deserialized.update(cx, |editor, cx| {
2105                assert_eq!(editor.text(cx), "fn main() {}");
2106                assert!(editor.has_conflict(cx)); // The editor should have a conflict
2107            });
2108        }
2109    }
2110}