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