project_diff.rs

   1use crate::{
   2    conflict_view::ConflictAddon,
   3    git_panel::{GitPanel, GitPanelAddon, GitStatusEntry},
   4    git_panel_settings::GitPanelSettings,
   5    remote_button::{render_publish_button, render_push_button},
   6};
   7use anyhow::{Context as _, Result, anyhow};
   8use buffer_diff::{BufferDiff, DiffHunkSecondaryStatus};
   9use collections::{HashMap, HashSet};
  10use editor::{
  11    Addon, Editor, EditorEvent, SelectionEffects, SplittableEditor,
  12    actions::{GoToHunk, GoToPreviousHunk, SendReviewToAgent},
  13    multibuffer_context_lines,
  14    scroll::Autoscroll,
  15};
  16use git::{
  17    Commit, StageAll, StageAndNext, ToggleStaged, UnstageAll, UnstageAndNext,
  18    repository::{Branch, RepoPath, Upstream, UpstreamTracking, UpstreamTrackingStatus},
  19    status::FileStatus,
  20};
  21use gpui::{
  22    Action, AnyElement, App, AppContext as _, AsyncWindowContext, Entity, EventEmitter,
  23    FocusHandle, Focusable, Render, Subscription, Task, WeakEntity, actions,
  24};
  25use language::{Anchor, Buffer, Capability, OffsetRangeExt};
  26use multi_buffer::{MultiBuffer, PathKey};
  27use project::{
  28    Project, ProjectPath,
  29    git_store::{
  30        Repository,
  31        branch_diff::{self, BranchDiffEvent, DiffBase},
  32    },
  33};
  34use settings::{Settings, SettingsStore};
  35use smol::future::yield_now;
  36use std::any::{Any, TypeId};
  37use std::sync::Arc;
  38use theme::ActiveTheme;
  39use ui::{KeyBinding, Tooltip, prelude::*, vertical_divider};
  40use util::{ResultExt as _, rel_path::RelPath};
  41use workspace::{
  42    CloseActiveItem, ItemNavHistory, SerializableItem, ToolbarItemEvent, ToolbarItemLocation,
  43    ToolbarItemView, Workspace,
  44    item::{Item, ItemEvent, ItemHandle, SaveOptions, TabContentParams},
  45    notifications::NotifyTaskExt,
  46    searchable::SearchableItemHandle,
  47};
  48use ztracing::instrument;
  49
  50actions!(
  51    git,
  52    [
  53        /// Shows the diff between the working directory and the index.
  54        Diff,
  55        /// Adds files to the git staging area.
  56        Add,
  57        /// Shows the diff between the working directory and your default
  58        /// branch (typically main or master).
  59        BranchDiff,
  60        LeaderAndFollower,
  61    ]
  62);
  63
  64pub struct ProjectDiff {
  65    project: Entity<Project>,
  66    multibuffer: Entity<MultiBuffer>,
  67    branch_diff: Entity<branch_diff::BranchDiff>,
  68    editor: Entity<SplittableEditor>,
  69    buffer_diff_subscriptions: HashMap<Arc<RelPath>, (Entity<BufferDiff>, Subscription)>,
  70    workspace: WeakEntity<Workspace>,
  71    focus_handle: FocusHandle,
  72    pending_scroll: Option<PathKey>,
  73    review_comment_count: usize,
  74    _task: Task<Result<()>>,
  75    _subscription: Subscription,
  76}
  77
  78#[derive(Clone, Copy, Debug, PartialEq, Eq)]
  79pub enum RefreshReason {
  80    DiffChanged,
  81    StatusesChanged,
  82    EditorSaved,
  83}
  84
  85const CONFLICT_SORT_PREFIX: u64 = 1;
  86const TRACKED_SORT_PREFIX: u64 = 2;
  87const NEW_SORT_PREFIX: u64 = 3;
  88
  89impl ProjectDiff {
  90    pub(crate) fn register(workspace: &mut Workspace, cx: &mut Context<Workspace>) {
  91        workspace.register_action(Self::deploy);
  92        workspace.register_action(Self::deploy_branch_diff);
  93        workspace.register_action(|workspace, _: &Add, window, cx| {
  94            Self::deploy(workspace, &Diff, window, cx);
  95        });
  96        workspace::register_serializable_item::<ProjectDiff>(cx);
  97    }
  98
  99    fn deploy(
 100        workspace: &mut Workspace,
 101        _: &Diff,
 102        window: &mut Window,
 103        cx: &mut Context<Workspace>,
 104    ) {
 105        Self::deploy_at(workspace, None, window, cx)
 106    }
 107
 108    fn deploy_branch_diff(
 109        workspace: &mut Workspace,
 110        _: &BranchDiff,
 111        window: &mut Window,
 112        cx: &mut Context<Workspace>,
 113    ) {
 114        telemetry::event!("Git Branch Diff Opened");
 115        let project = workspace.project().clone();
 116
 117        let existing = workspace
 118            .items_of_type::<Self>(cx)
 119            .find(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Merge { .. }));
 120        if let Some(existing) = existing {
 121            workspace.activate_item(&existing, true, true, window, cx);
 122            return;
 123        }
 124        let workspace = cx.entity();
 125        window
 126            .spawn(cx, async move |cx| {
 127                let this = cx
 128                    .update(|window, cx| {
 129                        Self::new_with_default_branch(project, workspace.clone(), window, cx)
 130                    })?
 131                    .await?;
 132                workspace
 133                    .update_in(cx, |workspace, window, cx| {
 134                        workspace.add_item_to_active_pane(Box::new(this), None, true, window, cx);
 135                    })
 136                    .ok();
 137                anyhow::Ok(())
 138            })
 139            .detach_and_notify_err(window, cx);
 140    }
 141
 142    pub fn deploy_at(
 143        workspace: &mut Workspace,
 144        entry: Option<GitStatusEntry>,
 145        window: &mut Window,
 146        cx: &mut Context<Workspace>,
 147    ) {
 148        telemetry::event!(
 149            "Git Diff Opened",
 150            source = if entry.is_some() {
 151                "Git Panel"
 152            } else {
 153                "Action"
 154            }
 155        );
 156        let existing = workspace
 157            .items_of_type::<Self>(cx)
 158            .find(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Head));
 159        let project_diff = if let Some(existing) = existing {
 160            existing.update(cx, |project_diff, cx| {
 161                project_diff.move_to_beginning(window, cx);
 162            });
 163
 164            workspace.activate_item(&existing, true, true, window, cx);
 165            existing
 166        } else {
 167            let workspace_handle = cx.entity();
 168            let project_diff =
 169                cx.new(|cx| Self::new(workspace.project().clone(), workspace_handle, window, cx));
 170            workspace.add_item_to_active_pane(
 171                Box::new(project_diff.clone()),
 172                None,
 173                true,
 174                window,
 175                cx,
 176            );
 177            project_diff
 178        };
 179        if let Some(entry) = entry {
 180            project_diff.update(cx, |project_diff, cx| {
 181                project_diff.move_to_entry(entry, window, cx);
 182            })
 183        }
 184    }
 185
 186    pub fn deploy_at_project_path(
 187        workspace: &mut Workspace,
 188        project_path: ProjectPath,
 189        window: &mut Window,
 190        cx: &mut Context<Workspace>,
 191    ) {
 192        telemetry::event!("Git Diff Opened", source = "Agent Panel");
 193        let existing = workspace
 194            .items_of_type::<Self>(cx)
 195            .find(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Head));
 196        let project_diff = if let Some(existing) = existing {
 197            workspace.activate_item(&existing, true, true, window, cx);
 198            existing
 199        } else {
 200            let workspace_handle = cx.entity();
 201            let project_diff =
 202                cx.new(|cx| Self::new(workspace.project().clone(), workspace_handle, window, cx));
 203            workspace.add_item_to_active_pane(
 204                Box::new(project_diff.clone()),
 205                None,
 206                true,
 207                window,
 208                cx,
 209            );
 210            project_diff
 211        };
 212        project_diff.update(cx, |project_diff, cx| {
 213            project_diff.move_to_project_path(&project_path, window, cx);
 214        });
 215    }
 216
 217    pub fn autoscroll(&self, cx: &mut Context<Self>) {
 218        self.editor.update(cx, |editor, cx| {
 219            editor.primary_editor().update(cx, |editor, cx| {
 220                editor.request_autoscroll(Autoscroll::fit(), cx);
 221            })
 222        })
 223    }
 224
 225    fn new_with_default_branch(
 226        project: Entity<Project>,
 227        workspace: Entity<Workspace>,
 228        window: &mut Window,
 229        cx: &mut App,
 230    ) -> Task<Result<Entity<Self>>> {
 231        let Some(repo) = project.read(cx).git_store().read(cx).active_repository() else {
 232            return Task::ready(Err(anyhow!("No active repository")));
 233        };
 234        let main_branch = repo.update(cx, |repo, _| repo.default_branch(true));
 235        window.spawn(cx, async move |cx| {
 236            let main_branch = main_branch
 237                .await??
 238                .context("Could not determine default branch")?;
 239
 240            let branch_diff = cx.new_window_entity(|window, cx| {
 241                branch_diff::BranchDiff::new(
 242                    DiffBase::Merge {
 243                        base_ref: main_branch,
 244                    },
 245                    project.clone(),
 246                    window,
 247                    cx,
 248                )
 249            })?;
 250            cx.new_window_entity(|window, cx| {
 251                Self::new_impl(branch_diff, project, workspace, window, cx)
 252            })
 253        })
 254    }
 255
 256    fn new(
 257        project: Entity<Project>,
 258        workspace: Entity<Workspace>,
 259        window: &mut Window,
 260        cx: &mut Context<Self>,
 261    ) -> Self {
 262        let branch_diff =
 263            cx.new(|cx| branch_diff::BranchDiff::new(DiffBase::Head, project.clone(), window, cx));
 264        Self::new_impl(branch_diff, project, workspace, window, cx)
 265    }
 266
 267    fn new_impl(
 268        branch_diff: Entity<branch_diff::BranchDiff>,
 269        project: Entity<Project>,
 270        workspace: Entity<Workspace>,
 271        window: &mut Window,
 272        cx: &mut Context<Self>,
 273    ) -> Self {
 274        let focus_handle = cx.focus_handle();
 275        let multibuffer = cx.new(|cx| {
 276            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite);
 277            multibuffer.set_all_diff_hunks_expanded(cx);
 278            multibuffer
 279        });
 280
 281        let editor = cx.new(|cx| {
 282            let diff_display_editor = SplittableEditor::new_unsplit(
 283                multibuffer.clone(),
 284                project.clone(),
 285                workspace.clone(),
 286                window,
 287                cx,
 288            );
 289            diff_display_editor
 290                .primary_editor()
 291                .update(cx, |editor, cx| {
 292                    editor.disable_diagnostics(cx);
 293                    editor.set_show_diff_review_button(true, cx);
 294
 295                    match branch_diff.read(cx).diff_base() {
 296                        DiffBase::Head => {
 297                            editor.register_addon(GitPanelAddon {
 298                                workspace: workspace.downgrade(),
 299                            });
 300                        }
 301                        DiffBase::Merge { .. } => {
 302                            editor.register_addon(BranchDiffAddon {
 303                                branch_diff: branch_diff.clone(),
 304                            });
 305                            editor.start_temporary_diff_override();
 306                            editor.set_render_diff_hunk_controls(
 307                                Arc::new(|_, _, _, _, _, _, _, _| gpui::Empty.into_any_element()),
 308                                cx,
 309                            );
 310                        }
 311                    }
 312                });
 313            diff_display_editor
 314        });
 315        let editor_subscription = cx.subscribe_in(&editor, window, Self::handle_editor_event);
 316
 317        let primary_editor = editor.read(cx).primary_editor().clone();
 318        let review_comment_subscription =
 319            cx.subscribe(&primary_editor, |this, _editor, event: &EditorEvent, cx| {
 320                if let EditorEvent::ReviewCommentsChanged { total_count } = event {
 321                    this.review_comment_count = *total_count;
 322                    cx.notify();
 323                }
 324            });
 325
 326        let branch_diff_subscription = cx.subscribe_in(
 327            &branch_diff,
 328            window,
 329            move |this, _git_store, event, window, cx| match event {
 330                BranchDiffEvent::FileListChanged => {
 331                    this._task = window.spawn(cx, {
 332                        let this = cx.weak_entity();
 333                        async |cx| Self::refresh(this, RefreshReason::StatusesChanged, cx).await
 334                    })
 335                }
 336            },
 337        );
 338
 339        let mut was_sort_by_path = GitPanelSettings::get_global(cx).sort_by_path;
 340        let mut was_collapse_untracked_diff =
 341            GitPanelSettings::get_global(cx).collapse_untracked_diff;
 342        cx.observe_global_in::<SettingsStore>(window, move |this, window, cx| {
 343            let is_sort_by_path = GitPanelSettings::get_global(cx).sort_by_path;
 344            let is_collapse_untracked_diff =
 345                GitPanelSettings::get_global(cx).collapse_untracked_diff;
 346            if is_sort_by_path != was_sort_by_path
 347                || is_collapse_untracked_diff != was_collapse_untracked_diff
 348            {
 349                this._task = {
 350                    window.spawn(cx, {
 351                        let this = cx.weak_entity();
 352                        async |cx| Self::refresh(this, RefreshReason::StatusesChanged, cx).await
 353                    })
 354                }
 355            }
 356            was_sort_by_path = is_sort_by_path;
 357            was_collapse_untracked_diff = is_collapse_untracked_diff;
 358        })
 359        .detach();
 360
 361        let task = window.spawn(cx, {
 362            let this = cx.weak_entity();
 363            async |cx| Self::refresh(this, RefreshReason::StatusesChanged, cx).await
 364        });
 365
 366        Self {
 367            project,
 368            workspace: workspace.downgrade(),
 369            branch_diff,
 370            focus_handle,
 371            editor,
 372            multibuffer,
 373            buffer_diff_subscriptions: Default::default(),
 374            pending_scroll: None,
 375            review_comment_count: 0,
 376            _task: task,
 377            _subscription: Subscription::join(
 378                branch_diff_subscription,
 379                Subscription::join(editor_subscription, review_comment_subscription),
 380            ),
 381        }
 382    }
 383
 384    pub fn diff_base<'a>(&'a self, cx: &'a App) -> &'a DiffBase {
 385        self.branch_diff.read(cx).diff_base()
 386    }
 387
 388    pub fn move_to_entry(
 389        &mut self,
 390        entry: GitStatusEntry,
 391        window: &mut Window,
 392        cx: &mut Context<Self>,
 393    ) {
 394        let Some(git_repo) = self.branch_diff.read(cx).repo() else {
 395            return;
 396        };
 397        let repo = git_repo.read(cx);
 398        let sort_prefix = sort_prefix(repo, &entry.repo_path, entry.status, cx);
 399        let path_key = PathKey::with_sort_prefix(sort_prefix, entry.repo_path.as_ref().clone());
 400
 401        self.move_to_path(path_key, window, cx)
 402    }
 403
 404    pub fn move_to_project_path(
 405        &mut self,
 406        project_path: &ProjectPath,
 407        window: &mut Window,
 408        cx: &mut Context<Self>,
 409    ) {
 410        let Some(git_repo) = self.branch_diff.read(cx).repo() else {
 411            return;
 412        };
 413        let Some(repo_path) = git_repo
 414            .read(cx)
 415            .project_path_to_repo_path(project_path, cx)
 416        else {
 417            return;
 418        };
 419        let status = git_repo
 420            .read(cx)
 421            .status_for_path(&repo_path)
 422            .map(|entry| entry.status)
 423            .unwrap_or(FileStatus::Untracked);
 424        let sort_prefix = sort_prefix(&git_repo.read(cx), &repo_path, status, cx);
 425        let path_key = PathKey::with_sort_prefix(sort_prefix, repo_path.as_ref().clone());
 426        self.move_to_path(path_key, window, cx)
 427    }
 428
 429    pub fn active_path(&self, cx: &App) -> Option<ProjectPath> {
 430        let editor = self.editor.read(cx).last_selected_editor().read(cx);
 431        let position = editor.selections.newest_anchor().head();
 432        let multi_buffer = editor.buffer().read(cx);
 433        let (_, buffer, _) = multi_buffer.excerpt_containing(position, cx)?;
 434
 435        let file = buffer.read(cx).file()?;
 436        Some(ProjectPath {
 437            worktree_id: file.worktree_id(cx),
 438            path: file.path().clone(),
 439        })
 440    }
 441
 442    fn move_to_beginning(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 443        self.editor.update(cx, |editor, cx| {
 444            editor.primary_editor().update(cx, |editor, cx| {
 445                editor.move_to_beginning(&Default::default(), window, cx);
 446            });
 447        });
 448    }
 449
 450    fn move_to_path(&mut self, path_key: PathKey, window: &mut Window, cx: &mut Context<Self>) {
 451        if let Some(position) = self.multibuffer.read(cx).location_for_path(&path_key, cx) {
 452            self.editor.update(cx, |editor, cx| {
 453                editor.primary_editor().update(cx, |editor, cx| {
 454                    editor.change_selections(
 455                        SelectionEffects::scroll(Autoscroll::focused()),
 456                        window,
 457                        cx,
 458                        |s| {
 459                            s.select_ranges([position..position]);
 460                        },
 461                    )
 462                })
 463            });
 464        } else {
 465            self.pending_scroll = Some(path_key);
 466        }
 467    }
 468
 469    /// Returns the total count of review comments across all hunks/files.
 470    pub fn total_review_comment_count(&self) -> usize {
 471        self.review_comment_count
 472    }
 473
 474    /// Returns a reference to the splittable editor.
 475    pub fn editor(&self) -> &Entity<SplittableEditor> {
 476        &self.editor
 477    }
 478
 479    fn button_states(&self, cx: &App) -> ButtonStates {
 480        let editor = self.editor.read(cx).primary_editor().read(cx);
 481        let snapshot = self.multibuffer.read(cx).snapshot(cx);
 482        let prev_next = snapshot.diff_hunks().nth(1).is_some();
 483        let mut selection = true;
 484
 485        let mut ranges = editor
 486            .selections
 487            .disjoint_anchor_ranges()
 488            .collect::<Vec<_>>();
 489        if !ranges.iter().any(|range| range.start != range.end) {
 490            selection = false;
 491            if let Some((excerpt_id, _, range)) = self
 492                .editor
 493                .read(cx)
 494                .primary_editor()
 495                .read(cx)
 496                .active_excerpt(cx)
 497            {
 498                ranges = vec![multi_buffer::Anchor::range_in_buffer(excerpt_id, range)];
 499            } else {
 500                ranges = Vec::default();
 501            }
 502        }
 503        let mut has_staged_hunks = false;
 504        let mut has_unstaged_hunks = false;
 505        for hunk in editor.diff_hunks_in_ranges(&ranges, &snapshot) {
 506            match hunk.status.secondary {
 507                DiffHunkSecondaryStatus::HasSecondaryHunk
 508                | DiffHunkSecondaryStatus::SecondaryHunkAdditionPending => {
 509                    has_unstaged_hunks = true;
 510                }
 511                DiffHunkSecondaryStatus::OverlapsWithSecondaryHunk => {
 512                    has_staged_hunks = true;
 513                    has_unstaged_hunks = true;
 514                }
 515                DiffHunkSecondaryStatus::NoSecondaryHunk
 516                | DiffHunkSecondaryStatus::SecondaryHunkRemovalPending => {
 517                    has_staged_hunks = true;
 518                }
 519            }
 520        }
 521        let mut stage_all = false;
 522        let mut unstage_all = false;
 523        self.workspace
 524            .read_with(cx, |workspace, cx| {
 525                if let Some(git_panel) = workspace.panel::<GitPanel>(cx) {
 526                    let git_panel = git_panel.read(cx);
 527                    stage_all = git_panel.can_stage_all();
 528                    unstage_all = git_panel.can_unstage_all();
 529                }
 530            })
 531            .ok();
 532
 533        ButtonStates {
 534            stage: has_unstaged_hunks,
 535            unstage: has_staged_hunks,
 536            prev_next,
 537            selection,
 538            stage_all,
 539            unstage_all,
 540        }
 541    }
 542
 543    fn handle_editor_event(
 544        &mut self,
 545        editor: &Entity<SplittableEditor>,
 546        event: &EditorEvent,
 547        window: &mut Window,
 548        cx: &mut Context<Self>,
 549    ) {
 550        match event {
 551            EditorEvent::SelectionsChanged { local: true } => {
 552                let Some(project_path) = self.active_path(cx) else {
 553                    return;
 554                };
 555                self.workspace
 556                    .update(cx, |workspace, cx| {
 557                        if let Some(git_panel) = workspace.panel::<GitPanel>(cx) {
 558                            git_panel.update(cx, |git_panel, cx| {
 559                                git_panel.select_entry_by_path(project_path, window, cx)
 560                            })
 561                        }
 562                    })
 563                    .ok();
 564            }
 565            EditorEvent::Saved => {
 566                self._task = cx.spawn_in(window, async move |this, cx| {
 567                    Self::refresh(this, RefreshReason::EditorSaved, cx).await
 568                });
 569            }
 570            _ => {}
 571        }
 572        if editor.focus_handle(cx).contains_focused(window, cx)
 573            && self.multibuffer.read(cx).is_empty()
 574        {
 575            self.focus_handle.focus(window, cx)
 576        }
 577    }
 578
 579    #[instrument(skip_all)]
 580    fn register_buffer(
 581        &mut self,
 582        path_key: PathKey,
 583        file_status: FileStatus,
 584        buffer: Entity<Buffer>,
 585        diff: Entity<BufferDiff>,
 586        window: &mut Window,
 587        cx: &mut Context<Self>,
 588    ) {
 589        let subscription = cx.subscribe_in(&diff, window, move |this, _, _, window, cx| {
 590            this._task = window.spawn(cx, {
 591                let this = cx.weak_entity();
 592                async |cx| Self::refresh(this, RefreshReason::DiffChanged, cx).await
 593            })
 594        });
 595        self.buffer_diff_subscriptions
 596            .insert(path_key.path.clone(), (diff.clone(), subscription));
 597
 598        // TODO(split-diff) we shouldn't have a conflict addon when split
 599        let conflict_addon = self
 600            .editor
 601            .read(cx)
 602            .primary_editor()
 603            .read(cx)
 604            .addon::<ConflictAddon>()
 605            .expect("project diff editor should have a conflict addon");
 606
 607        let snapshot = buffer.read(cx).snapshot();
 608        let diff_snapshot = diff.read(cx).snapshot(cx);
 609
 610        let excerpt_ranges = {
 611            let diff_hunk_ranges = diff_snapshot
 612                .hunks_intersecting_range(
 613                    Anchor::min_max_range_for_buffer(snapshot.remote_id()),
 614                    &snapshot,
 615                )
 616                .map(|diff_hunk| diff_hunk.buffer_range.to_point(&snapshot));
 617            let conflicts = conflict_addon
 618                .conflict_set(snapshot.remote_id())
 619                .map(|conflict_set| conflict_set.read(cx).snapshot().conflicts)
 620                .unwrap_or_default();
 621            let mut conflicts = conflicts
 622                .iter()
 623                .map(|conflict| conflict.range.to_point(&snapshot))
 624                .peekable();
 625
 626            if conflicts.peek().is_some() {
 627                conflicts.collect::<Vec<_>>()
 628            } else {
 629                diff_hunk_ranges.collect()
 630            }
 631        };
 632
 633        let (was_empty, is_excerpt_newly_added) = self.editor.update(cx, |editor, cx| {
 634            let was_empty = editor
 635                .primary_editor()
 636                .read(cx)
 637                .buffer()
 638                .read(cx)
 639                .is_empty();
 640            let (_, is_newly_added) = editor.set_excerpts_for_path(
 641                path_key.clone(),
 642                buffer,
 643                excerpt_ranges,
 644                multibuffer_context_lines(cx),
 645                diff,
 646                cx,
 647            );
 648            (was_empty, is_newly_added)
 649        });
 650
 651        self.editor.update(cx, |editor, cx| {
 652            editor.primary_editor().update(cx, |editor, cx| {
 653                if was_empty {
 654                    editor.change_selections(
 655                        SelectionEffects::no_scroll(),
 656                        window,
 657                        cx,
 658                        |selections| {
 659                            selections.select_ranges([
 660                                multi_buffer::Anchor::min()..multi_buffer::Anchor::min()
 661                            ])
 662                        },
 663                    );
 664                }
 665                if is_excerpt_newly_added
 666                    && (file_status.is_deleted()
 667                        || (file_status.is_untracked()
 668                            && GitPanelSettings::get_global(cx).collapse_untracked_diff))
 669                {
 670                    editor.fold_buffer(snapshot.text.remote_id(), cx)
 671                }
 672            })
 673        });
 674
 675        if self.multibuffer.read(cx).is_empty()
 676            && self
 677                .editor
 678                .read(cx)
 679                .focus_handle(cx)
 680                .contains_focused(window, cx)
 681        {
 682            self.focus_handle.focus(window, cx);
 683        } else if self.focus_handle.is_focused(window) && !self.multibuffer.read(cx).is_empty() {
 684            self.editor.update(cx, |editor, cx| {
 685                editor.focus_handle(cx).focus(window, cx);
 686            });
 687        }
 688        if self.pending_scroll.as_ref() == Some(&path_key) {
 689            self.move_to_path(path_key, window, cx);
 690        }
 691    }
 692
 693    pub async fn refresh(
 694        this: WeakEntity<Self>,
 695        reason: RefreshReason,
 696        cx: &mut AsyncWindowContext,
 697    ) -> Result<()> {
 698        let mut path_keys = Vec::new();
 699        let buffers_to_load = this.update(cx, |this, cx| {
 700            let (repo, buffers_to_load) = this.branch_diff.update(cx, |branch_diff, cx| {
 701                let load_buffers = branch_diff.load_buffers(cx);
 702                (branch_diff.repo().cloned(), load_buffers)
 703            });
 704            let mut previous_paths = this
 705                .multibuffer
 706                .read(cx)
 707                .paths()
 708                .cloned()
 709                .collect::<HashSet<_>>();
 710
 711            if let Some(repo) = repo {
 712                let repo = repo.read(cx);
 713
 714                path_keys = Vec::with_capacity(buffers_to_load.len());
 715                for entry in buffers_to_load.iter() {
 716                    let sort_prefix = sort_prefix(&repo, &entry.repo_path, entry.file_status, cx);
 717                    let path_key =
 718                        PathKey::with_sort_prefix(sort_prefix, entry.repo_path.as_ref().clone());
 719                    previous_paths.remove(&path_key);
 720                    path_keys.push(path_key)
 721                }
 722            }
 723
 724            this.editor.update(cx, |editor, cx| {
 725                for path in previous_paths {
 726                    if let Some(buffer) = this.multibuffer.read(cx).buffer_for_path(&path, cx) {
 727                        let skip = match reason {
 728                            RefreshReason::DiffChanged | RefreshReason::EditorSaved => {
 729                                buffer.read(cx).is_dirty()
 730                            }
 731                            RefreshReason::StatusesChanged => false,
 732                        };
 733                        if skip {
 734                            continue;
 735                        }
 736                    }
 737
 738                    this.buffer_diff_subscriptions.remove(&path.path);
 739                    editor.remove_excerpts_for_path(path, cx);
 740                }
 741            });
 742            buffers_to_load
 743        })?;
 744
 745        for (entry, path_key) in buffers_to_load.into_iter().zip(path_keys.into_iter()) {
 746            if let Some((buffer, diff)) = entry.load.await.log_err() {
 747                // We might be lagging behind enough that all future entry.load futures are no longer pending.
 748                // If that is the case, this task will never yield, starving the foreground thread of execution time.
 749                yield_now().await;
 750                cx.update(|window, cx| {
 751                    this.update(cx, |this, cx| {
 752                        let multibuffer = this.multibuffer.read(cx);
 753                        let skip = multibuffer.buffer(buffer.read(cx).remote_id()).is_some()
 754                            && multibuffer
 755                                .diff_for(buffer.read(cx).remote_id())
 756                                .is_some_and(|prev_diff| prev_diff.entity_id() == diff.entity_id())
 757                            && match reason {
 758                                RefreshReason::DiffChanged | RefreshReason::EditorSaved => {
 759                                    buffer.read(cx).is_dirty()
 760                                }
 761                                RefreshReason::StatusesChanged => false,
 762                            };
 763                        if !skip {
 764                            this.register_buffer(
 765                                path_key,
 766                                entry.file_status,
 767                                buffer,
 768                                diff,
 769                                window,
 770                                cx,
 771                            )
 772                        }
 773                    })
 774                    .ok();
 775                })?;
 776            }
 777        }
 778        this.update(cx, |this, cx| {
 779            this.pending_scroll.take();
 780            cx.notify();
 781        })?;
 782
 783        Ok(())
 784    }
 785
 786    #[cfg(any(test, feature = "test-support"))]
 787    pub fn excerpt_paths(&self, cx: &App) -> Vec<std::sync::Arc<util::rel_path::RelPath>> {
 788        self.multibuffer
 789            .read(cx)
 790            .paths()
 791            .map(|key| key.path.clone())
 792            .collect()
 793    }
 794}
 795
 796fn sort_prefix(repo: &Repository, repo_path: &RepoPath, status: FileStatus, cx: &App) -> u64 {
 797    let settings = GitPanelSettings::get_global(cx);
 798
 799    if settings.sort_by_path && !settings.tree_view {
 800        TRACKED_SORT_PREFIX
 801    } else if repo.had_conflict_on_last_merge_head_change(repo_path) {
 802        CONFLICT_SORT_PREFIX
 803    } else if status.is_created() {
 804        NEW_SORT_PREFIX
 805    } else {
 806        TRACKED_SORT_PREFIX
 807    }
 808}
 809
 810impl EventEmitter<EditorEvent> for ProjectDiff {}
 811
 812impl Focusable for ProjectDiff {
 813    fn focus_handle(&self, cx: &App) -> FocusHandle {
 814        if self.multibuffer.read(cx).is_empty() {
 815            self.focus_handle.clone()
 816        } else {
 817            self.editor.focus_handle(cx)
 818        }
 819    }
 820}
 821
 822impl Item for ProjectDiff {
 823    type Event = EditorEvent;
 824
 825    fn tab_icon(&self, _window: &Window, _cx: &App) -> Option<Icon> {
 826        Some(Icon::new(IconName::GitBranch).color(Color::Muted))
 827    }
 828
 829    fn to_item_events(event: &EditorEvent, f: impl FnMut(ItemEvent)) {
 830        Editor::to_item_events(event, f)
 831    }
 832
 833    fn deactivated(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 834        self.editor.update(cx, |editor, cx| {
 835            editor.primary_editor().update(cx, |primary_editor, cx| {
 836                primary_editor.deactivated(window, cx);
 837            })
 838        });
 839    }
 840
 841    fn navigate(
 842        &mut self,
 843        data: Arc<dyn Any + Send>,
 844        window: &mut Window,
 845        cx: &mut Context<Self>,
 846    ) -> bool {
 847        self.editor.update(cx, |editor, cx| {
 848            editor.primary_editor().update(cx, |primary_editor, cx| {
 849                primary_editor.navigate(data, window, cx)
 850            })
 851        })
 852    }
 853
 854    fn tab_tooltip_text(&self, _: &App) -> Option<SharedString> {
 855        Some("Project Diff".into())
 856    }
 857
 858    fn tab_content(&self, params: TabContentParams, _window: &Window, cx: &App) -> AnyElement {
 859        Label::new(self.tab_content_text(0, cx))
 860            .color(if params.selected {
 861                Color::Default
 862            } else {
 863                Color::Muted
 864            })
 865            .into_any_element()
 866    }
 867
 868    fn tab_content_text(&self, _detail: usize, cx: &App) -> SharedString {
 869        match self.branch_diff.read(cx).diff_base() {
 870            DiffBase::Head => "Uncommitted Changes".into(),
 871            DiffBase::Merge { base_ref } => format!("Changes since {}", base_ref).into(),
 872        }
 873    }
 874
 875    fn telemetry_event_text(&self) -> Option<&'static str> {
 876        Some("Project Diff Opened")
 877    }
 878
 879    fn as_searchable(&self, _: &Entity<Self>, cx: &App) -> Option<Box<dyn SearchableItemHandle>> {
 880        // TODO(split-diff) SplitEditor should be searchable
 881        Some(Box::new(self.editor.read(cx).primary_editor().clone()))
 882    }
 883
 884    fn for_each_project_item(
 885        &self,
 886        cx: &App,
 887        f: &mut dyn FnMut(gpui::EntityId, &dyn project::ProjectItem),
 888    ) {
 889        self.editor
 890            .read(cx)
 891            .primary_editor()
 892            .read(cx)
 893            .for_each_project_item(cx, f)
 894    }
 895
 896    fn set_nav_history(
 897        &mut self,
 898        nav_history: ItemNavHistory,
 899        _: &mut Window,
 900        cx: &mut Context<Self>,
 901    ) {
 902        self.editor.update(cx, |editor, cx| {
 903            editor.primary_editor().update(cx, |primary_editor, _| {
 904                primary_editor.set_nav_history(Some(nav_history));
 905            })
 906        });
 907    }
 908
 909    fn can_split(&self) -> bool {
 910        true
 911    }
 912
 913    fn clone_on_split(
 914        &self,
 915        _workspace_id: Option<workspace::WorkspaceId>,
 916        window: &mut Window,
 917        cx: &mut Context<Self>,
 918    ) -> Task<Option<Entity<Self>>>
 919    where
 920        Self: Sized,
 921    {
 922        let Some(workspace) = self.workspace.upgrade() else {
 923            return Task::ready(None);
 924        };
 925        Task::ready(Some(cx.new(|cx| {
 926            ProjectDiff::new(self.project.clone(), workspace, window, cx)
 927        })))
 928    }
 929
 930    fn is_dirty(&self, cx: &App) -> bool {
 931        self.multibuffer.read(cx).is_dirty(cx)
 932    }
 933
 934    fn has_conflict(&self, cx: &App) -> bool {
 935        self.multibuffer.read(cx).has_conflict(cx)
 936    }
 937
 938    fn can_save(&self, _: &App) -> bool {
 939        true
 940    }
 941
 942    fn save(
 943        &mut self,
 944        options: SaveOptions,
 945        project: Entity<Project>,
 946        window: &mut Window,
 947        cx: &mut Context<Self>,
 948    ) -> Task<Result<()>> {
 949        self.editor.update(cx, |editor, cx| {
 950            editor.primary_editor().update(cx, |primary_editor, cx| {
 951                primary_editor.save(options, project, window, cx)
 952            })
 953        })
 954    }
 955
 956    fn save_as(
 957        &mut self,
 958        _: Entity<Project>,
 959        _: ProjectPath,
 960        _window: &mut Window,
 961        _: &mut Context<Self>,
 962    ) -> Task<Result<()>> {
 963        unreachable!()
 964    }
 965
 966    fn reload(
 967        &mut self,
 968        project: Entity<Project>,
 969        window: &mut Window,
 970        cx: &mut Context<Self>,
 971    ) -> Task<Result<()>> {
 972        self.editor.update(cx, |editor, cx| {
 973            editor.primary_editor().update(cx, |primary_editor, cx| {
 974                primary_editor.reload(project, window, cx)
 975            })
 976        })
 977    }
 978
 979    fn act_as_type<'a>(
 980        &'a self,
 981        type_id: TypeId,
 982        self_handle: &'a Entity<Self>,
 983        cx: &'a App,
 984    ) -> Option<gpui::AnyEntity> {
 985        if type_id == TypeId::of::<Self>() {
 986            Some(self_handle.clone().into())
 987        } else if type_id == TypeId::of::<Editor>() {
 988            Some(self.editor.read(cx).primary_editor().clone().into())
 989        } else {
 990            None
 991        }
 992    }
 993
 994    fn added_to_workspace(
 995        &mut self,
 996        workspace: &mut Workspace,
 997        window: &mut Window,
 998        cx: &mut Context<Self>,
 999    ) {
1000        self.editor.update(cx, |editor, cx| {
1001            editor.added_to_workspace(workspace, window, cx)
1002        });
1003    }
1004}
1005
1006impl Render for ProjectDiff {
1007    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1008        let is_empty = self.multibuffer.read(cx).is_empty();
1009
1010        div()
1011            .track_focus(&self.focus_handle)
1012            .key_context(if is_empty { "EmptyPane" } else { "GitDiff" })
1013            .bg(cx.theme().colors().editor_background)
1014            .flex()
1015            .items_center()
1016            .justify_center()
1017            .size_full()
1018            .when(is_empty, |el| {
1019                let remote_button = if let Some(panel) = self
1020                    .workspace
1021                    .upgrade()
1022                    .and_then(|workspace| workspace.read(cx).panel::<GitPanel>(cx))
1023                {
1024                    panel.update(cx, |panel, cx| panel.render_remote_button(cx))
1025                } else {
1026                    None
1027                };
1028                let keybinding_focus_handle = self.focus_handle(cx);
1029                el.child(
1030                    v_flex()
1031                        .gap_1()
1032                        .child(
1033                            h_flex()
1034                                .justify_around()
1035                                .child(Label::new("No uncommitted changes")),
1036                        )
1037                        .map(|el| match remote_button {
1038                            Some(button) => el.child(h_flex().justify_around().child(button)),
1039                            None => el.child(
1040                                h_flex()
1041                                    .justify_around()
1042                                    .child(Label::new("Remote up to date")),
1043                            ),
1044                        })
1045                        .child(
1046                            h_flex().justify_around().mt_1().child(
1047                                Button::new("project-diff-close-button", "Close")
1048                                    // .style(ButtonStyle::Transparent)
1049                                    .key_binding(KeyBinding::for_action_in(
1050                                        &CloseActiveItem::default(),
1051                                        &keybinding_focus_handle,
1052                                        cx,
1053                                    ))
1054                                    .on_click(move |_, window, cx| {
1055                                        window.focus(&keybinding_focus_handle, cx);
1056                                        window.dispatch_action(
1057                                            Box::new(CloseActiveItem::default()),
1058                                            cx,
1059                                        );
1060                                    }),
1061                            ),
1062                        ),
1063                )
1064            })
1065            .when(!is_empty, |el| el.child(self.editor.clone()))
1066    }
1067}
1068
1069impl SerializableItem for ProjectDiff {
1070    fn serialized_item_kind() -> &'static str {
1071        "ProjectDiff"
1072    }
1073
1074    fn cleanup(
1075        _: workspace::WorkspaceId,
1076        _: Vec<workspace::ItemId>,
1077        _: &mut Window,
1078        _: &mut App,
1079    ) -> Task<Result<()>> {
1080        Task::ready(Ok(()))
1081    }
1082
1083    fn deserialize(
1084        project: Entity<Project>,
1085        workspace: WeakEntity<Workspace>,
1086        workspace_id: workspace::WorkspaceId,
1087        item_id: workspace::ItemId,
1088        window: &mut Window,
1089        cx: &mut App,
1090    ) -> Task<Result<Entity<Self>>> {
1091        window.spawn(cx, async move |cx| {
1092            let diff_base = persistence::PROJECT_DIFF_DB.get_diff_base(item_id, workspace_id)?;
1093
1094            let diff = cx.update(|window, cx| {
1095                let branch_diff = cx
1096                    .new(|cx| branch_diff::BranchDiff::new(diff_base, project.clone(), window, cx));
1097                let workspace = workspace.upgrade().context("workspace gone")?;
1098                anyhow::Ok(
1099                    cx.new(|cx| ProjectDiff::new_impl(branch_diff, project, workspace, window, cx)),
1100                )
1101            })??;
1102
1103            Ok(diff)
1104        })
1105    }
1106
1107    fn serialize(
1108        &mut self,
1109        workspace: &mut Workspace,
1110        item_id: workspace::ItemId,
1111        _closing: bool,
1112        _window: &mut Window,
1113        cx: &mut Context<Self>,
1114    ) -> Option<Task<Result<()>>> {
1115        let workspace_id = workspace.database_id()?;
1116        let diff_base = self.diff_base(cx).clone();
1117
1118        Some(cx.background_spawn({
1119            async move {
1120                persistence::PROJECT_DIFF_DB
1121                    .save_diff_base(item_id, workspace_id, diff_base.clone())
1122                    .await
1123            }
1124        }))
1125    }
1126
1127    fn should_serialize(&self, _: &Self::Event) -> bool {
1128        false
1129    }
1130}
1131
1132mod persistence {
1133
1134    use anyhow::Context as _;
1135    use db::{
1136        sqlez::{domain::Domain, thread_safe_connection::ThreadSafeConnection},
1137        sqlez_macros::sql,
1138    };
1139    use project::git_store::branch_diff::DiffBase;
1140    use workspace::{ItemId, WorkspaceDb, WorkspaceId};
1141
1142    pub struct ProjectDiffDb(ThreadSafeConnection);
1143
1144    impl Domain for ProjectDiffDb {
1145        const NAME: &str = stringify!(ProjectDiffDb);
1146
1147        const MIGRATIONS: &[&str] = &[sql!(
1148                CREATE TABLE project_diffs(
1149                    workspace_id INTEGER,
1150                    item_id INTEGER UNIQUE,
1151
1152                    diff_base TEXT,
1153
1154                    PRIMARY KEY(workspace_id, item_id),
1155                    FOREIGN KEY(workspace_id) REFERENCES workspaces(workspace_id)
1156                    ON DELETE CASCADE
1157                ) STRICT;
1158        )];
1159    }
1160
1161    db::static_connection!(PROJECT_DIFF_DB, ProjectDiffDb, [WorkspaceDb]);
1162
1163    impl ProjectDiffDb {
1164        pub async fn save_diff_base(
1165            &self,
1166            item_id: ItemId,
1167            workspace_id: WorkspaceId,
1168            diff_base: DiffBase,
1169        ) -> anyhow::Result<()> {
1170            self.write(move |connection| {
1171                let sql_stmt = sql!(
1172                    INSERT OR REPLACE INTO project_diffs(item_id, workspace_id, diff_base) VALUES (?, ?, ?)
1173                );
1174                let diff_base_str = serde_json::to_string(&diff_base)?;
1175                let mut query = connection.exec_bound::<(ItemId, WorkspaceId, String)>(sql_stmt)?;
1176                query((item_id, workspace_id, diff_base_str)).context(format!(
1177                    "exec_bound failed to execute or parse for: {}",
1178                    sql_stmt
1179                ))
1180            })
1181            .await
1182        }
1183
1184        pub fn get_diff_base(
1185            &self,
1186            item_id: ItemId,
1187            workspace_id: WorkspaceId,
1188        ) -> anyhow::Result<DiffBase> {
1189            let sql_stmt =
1190                sql!(SELECT diff_base FROM project_diffs WHERE item_id =  ?AND workspace_id =  ?);
1191            let diff_base_str = self.select_row_bound::<(ItemId, WorkspaceId), String>(sql_stmt)?(
1192                (item_id, workspace_id),
1193            )
1194            .context(::std::format!(
1195                "Error in get_diff_base, select_row_bound failed to execute or parse for: {}",
1196                sql_stmt
1197            ))?;
1198            let Some(diff_base_str) = diff_base_str else {
1199                return Ok(DiffBase::Head);
1200            };
1201            serde_json::from_str(&diff_base_str).context("deserializing diff base")
1202        }
1203    }
1204}
1205
1206pub struct ProjectDiffToolbar {
1207    project_diff: Option<WeakEntity<ProjectDiff>>,
1208    workspace: WeakEntity<Workspace>,
1209}
1210
1211impl ProjectDiffToolbar {
1212    pub fn new(workspace: &Workspace, _: &mut Context<Self>) -> Self {
1213        Self {
1214            project_diff: None,
1215            workspace: workspace.weak_handle(),
1216        }
1217    }
1218
1219    fn project_diff(&self, _: &App) -> Option<Entity<ProjectDiff>> {
1220        self.project_diff.as_ref()?.upgrade()
1221    }
1222
1223    fn dispatch_action(&self, action: &dyn Action, window: &mut Window, cx: &mut Context<Self>) {
1224        if let Some(project_diff) = self.project_diff(cx) {
1225            project_diff.focus_handle(cx).focus(window, cx);
1226        }
1227        let action = action.boxed_clone();
1228        cx.defer(move |cx| {
1229            cx.dispatch_action(action.as_ref());
1230        })
1231    }
1232
1233    fn stage_all(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1234        self.workspace
1235            .update(cx, |workspace, cx| {
1236                if let Some(panel) = workspace.panel::<GitPanel>(cx) {
1237                    panel.update(cx, |panel, cx| {
1238                        panel.stage_all(&Default::default(), window, cx);
1239                    });
1240                }
1241            })
1242            .ok();
1243    }
1244
1245    fn unstage_all(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1246        self.workspace
1247            .update(cx, |workspace, cx| {
1248                let Some(panel) = workspace.panel::<GitPanel>(cx) else {
1249                    return;
1250                };
1251                panel.update(cx, |panel, cx| {
1252                    panel.unstage_all(&Default::default(), window, cx);
1253                });
1254            })
1255            .ok();
1256    }
1257}
1258
1259impl EventEmitter<ToolbarItemEvent> for ProjectDiffToolbar {}
1260
1261impl ToolbarItemView for ProjectDiffToolbar {
1262    fn set_active_pane_item(
1263        &mut self,
1264        active_pane_item: Option<&dyn ItemHandle>,
1265        _: &mut Window,
1266        cx: &mut Context<Self>,
1267    ) -> ToolbarItemLocation {
1268        self.project_diff = active_pane_item
1269            .and_then(|item| item.act_as::<ProjectDiff>(cx))
1270            .filter(|item| item.read(cx).diff_base(cx) == &DiffBase::Head)
1271            .map(|entity| entity.downgrade());
1272        if self.project_diff.is_some() {
1273            ToolbarItemLocation::PrimaryRight
1274        } else {
1275            ToolbarItemLocation::Hidden
1276        }
1277    }
1278
1279    fn pane_focus_update(
1280        &mut self,
1281        _pane_focused: bool,
1282        _window: &mut Window,
1283        _cx: &mut Context<Self>,
1284    ) {
1285    }
1286}
1287
1288struct ButtonStates {
1289    stage: bool,
1290    unstage: bool,
1291    prev_next: bool,
1292    selection: bool,
1293    stage_all: bool,
1294    unstage_all: bool,
1295}
1296
1297impl Render for ProjectDiffToolbar {
1298    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1299        let Some(project_diff) = self.project_diff(cx) else {
1300            return div();
1301        };
1302        let focus_handle = project_diff.focus_handle(cx);
1303        let button_states = project_diff.read(cx).button_states(cx);
1304        let review_count = project_diff.read(cx).total_review_comment_count();
1305
1306        h_group_xl()
1307            .my_neg_1()
1308            .py_1()
1309            .items_center()
1310            .flex_wrap()
1311            .justify_between()
1312            .child(
1313                h_group_sm()
1314                    .when(button_states.selection, |el| {
1315                        el.child(
1316                            Button::new("stage", "Toggle Staged")
1317                                .tooltip(Tooltip::for_action_title_in(
1318                                    "Toggle Staged",
1319                                    &ToggleStaged,
1320                                    &focus_handle,
1321                                ))
1322                                .disabled(!button_states.stage && !button_states.unstage)
1323                                .on_click(cx.listener(|this, _, window, cx| {
1324                                    this.dispatch_action(&ToggleStaged, window, cx)
1325                                })),
1326                        )
1327                    })
1328                    .when(!button_states.selection, |el| {
1329                        el.child(
1330                            Button::new("stage", "Stage")
1331                                .tooltip(Tooltip::for_action_title_in(
1332                                    "Stage and go to next hunk",
1333                                    &StageAndNext,
1334                                    &focus_handle,
1335                                ))
1336                                .disabled(
1337                                    !button_states.prev_next
1338                                        && !button_states.stage_all
1339                                        && !button_states.unstage_all,
1340                                )
1341                                .on_click(cx.listener(|this, _, window, cx| {
1342                                    this.dispatch_action(&StageAndNext, window, cx)
1343                                })),
1344                        )
1345                        .child(
1346                            Button::new("unstage", "Unstage")
1347                                .tooltip(Tooltip::for_action_title_in(
1348                                    "Unstage and go to next hunk",
1349                                    &UnstageAndNext,
1350                                    &focus_handle,
1351                                ))
1352                                .disabled(
1353                                    !button_states.prev_next
1354                                        && !button_states.stage_all
1355                                        && !button_states.unstage_all,
1356                                )
1357                                .on_click(cx.listener(|this, _, window, cx| {
1358                                    this.dispatch_action(&UnstageAndNext, window, cx)
1359                                })),
1360                        )
1361                    }),
1362            )
1363            // n.b. the only reason these arrows are here is because we don't
1364            // support "undo" for staging so we need a way to go back.
1365            .child(
1366                h_group_sm()
1367                    .child(
1368                        IconButton::new("up", IconName::ArrowUp)
1369                            .shape(ui::IconButtonShape::Square)
1370                            .tooltip(Tooltip::for_action_title_in(
1371                                "Go to previous hunk",
1372                                &GoToPreviousHunk,
1373                                &focus_handle,
1374                            ))
1375                            .disabled(!button_states.prev_next)
1376                            .on_click(cx.listener(|this, _, window, cx| {
1377                                this.dispatch_action(&GoToPreviousHunk, window, cx)
1378                            })),
1379                    )
1380                    .child(
1381                        IconButton::new("down", IconName::ArrowDown)
1382                            .shape(ui::IconButtonShape::Square)
1383                            .tooltip(Tooltip::for_action_title_in(
1384                                "Go to next hunk",
1385                                &GoToHunk,
1386                                &focus_handle,
1387                            ))
1388                            .disabled(!button_states.prev_next)
1389                            .on_click(cx.listener(|this, _, window, cx| {
1390                                this.dispatch_action(&GoToHunk, window, cx)
1391                            })),
1392                    ),
1393            )
1394            .child(vertical_divider())
1395            .child(
1396                h_group_sm()
1397                    .when(
1398                        button_states.unstage_all && !button_states.stage_all,
1399                        |el| {
1400                            el.child(
1401                                Button::new("unstage-all", "Unstage All")
1402                                    .tooltip(Tooltip::for_action_title_in(
1403                                        "Unstage all changes",
1404                                        &UnstageAll,
1405                                        &focus_handle,
1406                                    ))
1407                                    .on_click(cx.listener(|this, _, window, cx| {
1408                                        this.unstage_all(window, cx)
1409                                    })),
1410                            )
1411                        },
1412                    )
1413                    .when(
1414                        !button_states.unstage_all || button_states.stage_all,
1415                        |el| {
1416                            el.child(
1417                                // todo make it so that changing to say "Unstaged"
1418                                // doesn't change the position.
1419                                div().child(
1420                                    Button::new("stage-all", "Stage All")
1421                                        .disabled(!button_states.stage_all)
1422                                        .tooltip(Tooltip::for_action_title_in(
1423                                            "Stage all changes",
1424                                            &StageAll,
1425                                            &focus_handle,
1426                                        ))
1427                                        .on_click(cx.listener(|this, _, window, cx| {
1428                                            this.stage_all(window, cx)
1429                                        })),
1430                                ),
1431                            )
1432                        },
1433                    )
1434                    .child(
1435                        Button::new("commit", "Commit")
1436                            .tooltip(Tooltip::for_action_title_in(
1437                                "Commit",
1438                                &Commit,
1439                                &focus_handle,
1440                            ))
1441                            .on_click(cx.listener(|this, _, window, cx| {
1442                                this.dispatch_action(&Commit, window, cx);
1443                            })),
1444                    ),
1445            )
1446            // "Send Review to Agent" button (only shown when there are review comments)
1447            .when(review_count > 0, |el| {
1448                el.child(vertical_divider()).child(
1449                    render_send_review_to_agent_button(review_count, &focus_handle).on_click(
1450                        cx.listener(|this, _, window, cx| {
1451                            this.dispatch_action(&SendReviewToAgent, window, cx)
1452                        }),
1453                    ),
1454                )
1455            })
1456    }
1457}
1458
1459fn render_send_review_to_agent_button(review_count: usize, focus_handle: &FocusHandle) -> Button {
1460    Button::new(
1461        "send-review",
1462        format!("Send Review to Agent ({})", review_count),
1463    )
1464    .icon(IconName::ZedAssistant)
1465    .icon_position(IconPosition::Start)
1466    .tooltip(Tooltip::for_action_title_in(
1467        "Send all review comments to the Agent panel",
1468        &SendReviewToAgent,
1469        focus_handle,
1470    ))
1471}
1472
1473pub struct BranchDiffToolbar {
1474    project_diff: Option<WeakEntity<ProjectDiff>>,
1475}
1476
1477impl BranchDiffToolbar {
1478    pub fn new(_: &mut Context<Self>) -> Self {
1479        Self { project_diff: None }
1480    }
1481
1482    fn project_diff(&self, _: &App) -> Option<Entity<ProjectDiff>> {
1483        self.project_diff.as_ref()?.upgrade()
1484    }
1485
1486    fn dispatch_action(&self, action: &dyn Action, window: &mut Window, cx: &mut Context<Self>) {
1487        if let Some(project_diff) = self.project_diff(cx) {
1488            project_diff.focus_handle(cx).focus(window, cx);
1489        }
1490        let action = action.boxed_clone();
1491        cx.defer(move |cx| {
1492            cx.dispatch_action(action.as_ref());
1493        })
1494    }
1495}
1496
1497impl EventEmitter<ToolbarItemEvent> for BranchDiffToolbar {}
1498
1499impl ToolbarItemView for BranchDiffToolbar {
1500    fn set_active_pane_item(
1501        &mut self,
1502        active_pane_item: Option<&dyn ItemHandle>,
1503        _: &mut Window,
1504        cx: &mut Context<Self>,
1505    ) -> ToolbarItemLocation {
1506        self.project_diff = active_pane_item
1507            .and_then(|item| item.act_as::<ProjectDiff>(cx))
1508            .filter(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Merge { .. }))
1509            .map(|entity| entity.downgrade());
1510        if self.project_diff.is_some() {
1511            ToolbarItemLocation::PrimaryRight
1512        } else {
1513            ToolbarItemLocation::Hidden
1514        }
1515    }
1516
1517    fn pane_focus_update(
1518        &mut self,
1519        _pane_focused: bool,
1520        _window: &mut Window,
1521        _cx: &mut Context<Self>,
1522    ) {
1523    }
1524}
1525
1526impl Render for BranchDiffToolbar {
1527    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1528        let Some(project_diff) = self.project_diff(cx) else {
1529            return div();
1530        };
1531        let focus_handle = project_diff.focus_handle(cx);
1532        let review_count = project_diff.read(cx).total_review_comment_count();
1533
1534        h_group_xl()
1535            .my_neg_1()
1536            .py_1()
1537            .items_center()
1538            .flex_wrap()
1539            .justify_end()
1540            .when(review_count > 0, |el| {
1541                el.child(
1542                    render_send_review_to_agent_button(review_count, &focus_handle).on_click(
1543                        cx.listener(|this, _, window, cx| {
1544                            this.dispatch_action(&SendReviewToAgent, window, cx)
1545                        }),
1546                    ),
1547                )
1548            })
1549    }
1550}
1551
1552#[derive(IntoElement, RegisterComponent)]
1553pub struct ProjectDiffEmptyState {
1554    pub no_repo: bool,
1555    pub can_push_and_pull: bool,
1556    pub focus_handle: Option<FocusHandle>,
1557    pub current_branch: Option<Branch>,
1558    // has_pending_commits: bool,
1559    // ahead_of_remote: bool,
1560    // no_git_repository: bool,
1561}
1562
1563impl RenderOnce for ProjectDiffEmptyState {
1564    fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
1565        let status_against_remote = |ahead_by: usize, behind_by: usize| -> bool {
1566            matches!(self.current_branch, Some(Branch {
1567                    upstream:
1568                        Some(Upstream {
1569                            tracking:
1570                                UpstreamTracking::Tracked(UpstreamTrackingStatus {
1571                                    ahead, behind, ..
1572                                }),
1573                            ..
1574                        }),
1575                    ..
1576                }) if (ahead > 0) == (ahead_by > 0) && (behind > 0) == (behind_by > 0))
1577        };
1578
1579        let change_count = |current_branch: &Branch| -> (usize, usize) {
1580            match current_branch {
1581                Branch {
1582                    upstream:
1583                        Some(Upstream {
1584                            tracking:
1585                                UpstreamTracking::Tracked(UpstreamTrackingStatus {
1586                                    ahead, behind, ..
1587                                }),
1588                            ..
1589                        }),
1590                    ..
1591                } => (*ahead as usize, *behind as usize),
1592                _ => (0, 0),
1593            }
1594        };
1595
1596        let not_ahead_or_behind = status_against_remote(0, 0);
1597        let ahead_of_remote = status_against_remote(1, 0);
1598        let branch_not_on_remote = if let Some(branch) = self.current_branch.as_ref() {
1599            branch.upstream.is_none()
1600        } else {
1601            false
1602        };
1603
1604        let has_branch_container = |branch: &Branch| {
1605            h_flex()
1606                .max_w(px(420.))
1607                .bg(cx.theme().colors().text.opacity(0.05))
1608                .border_1()
1609                .border_color(cx.theme().colors().border)
1610                .rounded_sm()
1611                .gap_8()
1612                .px_6()
1613                .py_4()
1614                .map(|this| {
1615                    if ahead_of_remote {
1616                        let ahead_count = change_count(branch).0;
1617                        let ahead_string = format!("{} Commits Ahead", ahead_count);
1618                        this.child(
1619                            v_flex()
1620                                .child(Headline::new(ahead_string).size(HeadlineSize::Small))
1621                                .child(
1622                                    Label::new(format!("Push your changes to {}", branch.name()))
1623                                        .color(Color::Muted),
1624                                ),
1625                        )
1626                        .child(div().child(render_push_button(
1627                            self.focus_handle,
1628                            "push".into(),
1629                            ahead_count as u32,
1630                        )))
1631                    } else if branch_not_on_remote {
1632                        this.child(
1633                            v_flex()
1634                                .child(Headline::new("Publish Branch").size(HeadlineSize::Small))
1635                                .child(
1636                                    Label::new(format!("Create {} on remote", branch.name()))
1637                                        .color(Color::Muted),
1638                                ),
1639                        )
1640                        .child(
1641                            div().child(render_publish_button(self.focus_handle, "publish".into())),
1642                        )
1643                    } else {
1644                        this.child(Label::new("Remote status unknown").color(Color::Muted))
1645                    }
1646                })
1647        };
1648
1649        v_flex().size_full().items_center().justify_center().child(
1650            v_flex()
1651                .gap_1()
1652                .when(self.no_repo, |this| {
1653                    // TODO: add git init
1654                    this.text_center()
1655                        .child(Label::new("No Repository").color(Color::Muted))
1656                })
1657                .map(|this| {
1658                    if not_ahead_or_behind && self.current_branch.is_some() {
1659                        this.text_center()
1660                            .child(Label::new("No Changes").color(Color::Muted))
1661                    } else {
1662                        this.when_some(self.current_branch.as_ref(), |this, branch| {
1663                            this.child(has_branch_container(branch))
1664                        })
1665                    }
1666                }),
1667        )
1668    }
1669}
1670
1671mod preview {
1672    use git::repository::{
1673        Branch, CommitSummary, Upstream, UpstreamTracking, UpstreamTrackingStatus,
1674    };
1675    use ui::prelude::*;
1676
1677    use super::ProjectDiffEmptyState;
1678
1679    // View this component preview using `workspace: open component-preview`
1680    impl Component for ProjectDiffEmptyState {
1681        fn scope() -> ComponentScope {
1682            ComponentScope::VersionControl
1683        }
1684
1685        fn preview(_window: &mut Window, _cx: &mut App) -> Option<AnyElement> {
1686            let unknown_upstream: Option<UpstreamTracking> = None;
1687            let ahead_of_upstream: Option<UpstreamTracking> = Some(
1688                UpstreamTrackingStatus {
1689                    ahead: 2,
1690                    behind: 0,
1691                }
1692                .into(),
1693            );
1694
1695            let not_ahead_or_behind_upstream: Option<UpstreamTracking> = Some(
1696                UpstreamTrackingStatus {
1697                    ahead: 0,
1698                    behind: 0,
1699                }
1700                .into(),
1701            );
1702
1703            fn branch(upstream: Option<UpstreamTracking>) -> Branch {
1704                Branch {
1705                    is_head: true,
1706                    ref_name: "some-branch".into(),
1707                    upstream: upstream.map(|tracking| Upstream {
1708                        ref_name: "origin/some-branch".into(),
1709                        tracking,
1710                    }),
1711                    most_recent_commit: Some(CommitSummary {
1712                        sha: "abc123".into(),
1713                        subject: "Modify stuff".into(),
1714                        commit_timestamp: 1710932954,
1715                        author_name: "John Doe".into(),
1716                        has_parent: true,
1717                    }),
1718                }
1719            }
1720
1721            let no_repo_state = ProjectDiffEmptyState {
1722                no_repo: true,
1723                can_push_and_pull: false,
1724                focus_handle: None,
1725                current_branch: None,
1726            };
1727
1728            let no_changes_state = ProjectDiffEmptyState {
1729                no_repo: false,
1730                can_push_and_pull: true,
1731                focus_handle: None,
1732                current_branch: Some(branch(not_ahead_or_behind_upstream)),
1733            };
1734
1735            let ahead_of_upstream_state = ProjectDiffEmptyState {
1736                no_repo: false,
1737                can_push_and_pull: true,
1738                focus_handle: None,
1739                current_branch: Some(branch(ahead_of_upstream)),
1740            };
1741
1742            let unknown_upstream_state = ProjectDiffEmptyState {
1743                no_repo: false,
1744                can_push_and_pull: true,
1745                focus_handle: None,
1746                current_branch: Some(branch(unknown_upstream)),
1747            };
1748
1749            let (width, height) = (px(480.), px(320.));
1750
1751            Some(
1752                v_flex()
1753                    .gap_6()
1754                    .children(vec![
1755                        example_group(vec![
1756                            single_example(
1757                                "No Repo",
1758                                div()
1759                                    .w(width)
1760                                    .h(height)
1761                                    .child(no_repo_state)
1762                                    .into_any_element(),
1763                            ),
1764                            single_example(
1765                                "No Changes",
1766                                div()
1767                                    .w(width)
1768                                    .h(height)
1769                                    .child(no_changes_state)
1770                                    .into_any_element(),
1771                            ),
1772                            single_example(
1773                                "Unknown Upstream",
1774                                div()
1775                                    .w(width)
1776                                    .h(height)
1777                                    .child(unknown_upstream_state)
1778                                    .into_any_element(),
1779                            ),
1780                            single_example(
1781                                "Ahead of Remote",
1782                                div()
1783                                    .w(width)
1784                                    .h(height)
1785                                    .child(ahead_of_upstream_state)
1786                                    .into_any_element(),
1787                            ),
1788                        ])
1789                        .vertical(),
1790                    ])
1791                    .into_any_element(),
1792            )
1793        }
1794    }
1795}
1796
1797struct BranchDiffAddon {
1798    branch_diff: Entity<branch_diff::BranchDiff>,
1799}
1800
1801impl Addon for BranchDiffAddon {
1802    fn to_any(&self) -> &dyn std::any::Any {
1803        self
1804    }
1805
1806    fn override_status_for_buffer_id(
1807        &self,
1808        buffer_id: language::BufferId,
1809        cx: &App,
1810    ) -> Option<FileStatus> {
1811        self.branch_diff
1812            .read(cx)
1813            .status_for_buffer_id(buffer_id, cx)
1814    }
1815}
1816
1817#[cfg(test)]
1818mod tests {
1819    use collections::HashMap;
1820    use db::indoc;
1821    use editor::test::editor_test_context::{EditorTestContext, assert_state_with_diff};
1822    use git::status::{TrackedStatus, UnmergedStatus, UnmergedStatusCode};
1823    use gpui::TestAppContext;
1824    use project::FakeFs;
1825    use serde_json::json;
1826    use settings::SettingsStore;
1827    use std::path::Path;
1828    use unindent::Unindent as _;
1829    use util::{
1830        path,
1831        rel_path::{RelPath, rel_path},
1832    };
1833
1834    use super::*;
1835
1836    #[ctor::ctor]
1837    fn init_logger() {
1838        zlog::init_test();
1839    }
1840
1841    fn init_test(cx: &mut TestAppContext) {
1842        cx.update(|cx| {
1843            let store = SettingsStore::test(cx);
1844            cx.set_global(store);
1845            theme::init(theme::LoadThemes::JustBase, cx);
1846            editor::init(cx);
1847            crate::init(cx);
1848        });
1849    }
1850
1851    #[gpui::test]
1852    async fn test_save_after_restore(cx: &mut TestAppContext) {
1853        init_test(cx);
1854
1855        let fs = FakeFs::new(cx.executor());
1856        fs.insert_tree(
1857            path!("/project"),
1858            json!({
1859                ".git": {},
1860                "foo.txt": "FOO\n",
1861            }),
1862        )
1863        .await;
1864        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1865
1866        fs.set_head_for_repo(
1867            path!("/project/.git").as_ref(),
1868            &[("foo.txt", "foo\n".into())],
1869            "deadbeef",
1870        );
1871        fs.set_index_for_repo(
1872            path!("/project/.git").as_ref(),
1873            &[("foo.txt", "foo\n".into())],
1874        );
1875
1876        let (workspace, cx) =
1877            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1878        let diff = cx.new_window_entity(|window, cx| {
1879            ProjectDiff::new(project.clone(), workspace, window, cx)
1880        });
1881        cx.run_until_parked();
1882
1883        let editor = diff.read_with(cx, |diff, cx| diff.editor.read(cx).primary_editor().clone());
1884        assert_state_with_diff(
1885            &editor,
1886            cx,
1887            &"
1888                - ˇfoo
1889                + FOO
1890            "
1891            .unindent(),
1892        );
1893
1894        editor
1895            .update_in(cx, |editor, window, cx| {
1896                editor.git_restore(&Default::default(), window, cx);
1897                editor.save(SaveOptions::default(), project.clone(), window, cx)
1898            })
1899            .await
1900            .unwrap();
1901        cx.run_until_parked();
1902
1903        assert_state_with_diff(&editor, cx, &"ˇ".unindent());
1904
1905        let text = String::from_utf8(fs.read_file_sync("/project/foo.txt").unwrap()).unwrap();
1906        assert_eq!(text, "foo\n");
1907    }
1908
1909    #[gpui::test]
1910    async fn test_scroll_to_beginning_with_deletion(cx: &mut TestAppContext) {
1911        init_test(cx);
1912
1913        let fs = FakeFs::new(cx.executor());
1914        fs.insert_tree(
1915            path!("/project"),
1916            json!({
1917                ".git": {},
1918                "bar": "BAR\n",
1919                "foo": "FOO\n",
1920            }),
1921        )
1922        .await;
1923        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1924        let (workspace, cx) =
1925            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1926        let diff = cx.new_window_entity(|window, cx| {
1927            ProjectDiff::new(project.clone(), workspace, window, cx)
1928        });
1929        cx.run_until_parked();
1930
1931        fs.set_head_and_index_for_repo(
1932            path!("/project/.git").as_ref(),
1933            &[("bar", "bar\n".into()), ("foo", "foo\n".into())],
1934        );
1935        cx.run_until_parked();
1936
1937        let editor = cx.update_window_entity(&diff, |diff, window, cx| {
1938            diff.move_to_path(
1939                PathKey::with_sort_prefix(TRACKED_SORT_PREFIX, rel_path("foo").into_arc()),
1940                window,
1941                cx,
1942            );
1943            diff.editor.read(cx).primary_editor().clone()
1944        });
1945        assert_state_with_diff(
1946            &editor,
1947            cx,
1948            &"
1949                - bar
1950                + BAR
1951
1952                - ˇfoo
1953                + FOO
1954            "
1955            .unindent(),
1956        );
1957
1958        let editor = cx.update_window_entity(&diff, |diff, window, cx| {
1959            diff.move_to_path(
1960                PathKey::with_sort_prefix(TRACKED_SORT_PREFIX, rel_path("bar").into_arc()),
1961                window,
1962                cx,
1963            );
1964            diff.editor.read(cx).primary_editor().clone()
1965        });
1966        assert_state_with_diff(
1967            &editor,
1968            cx,
1969            &"
1970                - ˇbar
1971                + BAR
1972
1973                - foo
1974                + FOO
1975            "
1976            .unindent(),
1977        );
1978    }
1979
1980    #[gpui::test]
1981    async fn test_hunks_after_restore_then_modify(cx: &mut TestAppContext) {
1982        init_test(cx);
1983
1984        let fs = FakeFs::new(cx.executor());
1985        fs.insert_tree(
1986            path!("/project"),
1987            json!({
1988                ".git": {},
1989                "foo": "modified\n",
1990            }),
1991        )
1992        .await;
1993        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1994        let (workspace, cx) =
1995            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1996        fs.set_head_for_repo(
1997            path!("/project/.git").as_ref(),
1998            &[("foo", "original\n".into())],
1999            "deadbeef",
2000        );
2001
2002        let buffer = project
2003            .update(cx, |project, cx| {
2004                project.open_local_buffer(path!("/project/foo"), cx)
2005            })
2006            .await
2007            .unwrap();
2008        let buffer_editor = cx.new_window_entity(|window, cx| {
2009            Editor::for_buffer(buffer, Some(project.clone()), window, cx)
2010        });
2011        let diff = cx.new_window_entity(|window, cx| {
2012            ProjectDiff::new(project.clone(), workspace, window, cx)
2013        });
2014        cx.run_until_parked();
2015
2016        let diff_editor =
2017            diff.read_with(cx, |diff, cx| diff.editor.read(cx).primary_editor().clone());
2018
2019        assert_state_with_diff(
2020            &diff_editor,
2021            cx,
2022            &"
2023                - ˇoriginal
2024                + modified
2025            "
2026            .unindent(),
2027        );
2028
2029        let prev_buffer_hunks =
2030            cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2031                let snapshot = buffer_editor.snapshot(window, cx);
2032                let snapshot = &snapshot.buffer_snapshot();
2033                let prev_buffer_hunks = buffer_editor
2034                    .diff_hunks_in_ranges(&[editor::Anchor::min()..editor::Anchor::max()], snapshot)
2035                    .collect::<Vec<_>>();
2036                buffer_editor.git_restore(&Default::default(), window, cx);
2037                prev_buffer_hunks
2038            });
2039        assert_eq!(prev_buffer_hunks.len(), 1);
2040        cx.run_until_parked();
2041
2042        let new_buffer_hunks =
2043            cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2044                let snapshot = buffer_editor.snapshot(window, cx);
2045                let snapshot = &snapshot.buffer_snapshot();
2046                buffer_editor
2047                    .diff_hunks_in_ranges(&[editor::Anchor::min()..editor::Anchor::max()], snapshot)
2048                    .collect::<Vec<_>>()
2049            });
2050        assert_eq!(new_buffer_hunks.as_slice(), &[]);
2051
2052        cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2053            buffer_editor.set_text("different\n", window, cx);
2054            buffer_editor.save(
2055                SaveOptions {
2056                    format: false,
2057                    autosave: false,
2058                },
2059                project.clone(),
2060                window,
2061                cx,
2062            )
2063        })
2064        .await
2065        .unwrap();
2066
2067        cx.run_until_parked();
2068
2069        cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2070            buffer_editor.expand_all_diff_hunks(&Default::default(), window, cx);
2071        });
2072
2073        assert_state_with_diff(
2074            &buffer_editor,
2075            cx,
2076            &"
2077                - original
2078                + different
2079                  ˇ"
2080            .unindent(),
2081        );
2082
2083        assert_state_with_diff(
2084            &diff_editor,
2085            cx,
2086            &"
2087                - ˇoriginal
2088                + different
2089            "
2090            .unindent(),
2091        );
2092    }
2093
2094    use crate::{
2095        conflict_view::resolve_conflict,
2096        project_diff::{self, ProjectDiff},
2097    };
2098
2099    #[gpui::test]
2100    async fn test_go_to_prev_hunk_multibuffer(cx: &mut TestAppContext) {
2101        init_test(cx);
2102
2103        let fs = FakeFs::new(cx.executor());
2104        fs.insert_tree(
2105            path!("/a"),
2106            json!({
2107                ".git": {},
2108                "a.txt": "created\n",
2109                "b.txt": "really changed\n",
2110                "c.txt": "unchanged\n"
2111            }),
2112        )
2113        .await;
2114
2115        fs.set_head_and_index_for_repo(
2116            Path::new(path!("/a/.git")),
2117            &[
2118                ("b.txt", "before\n".to_string()),
2119                ("c.txt", "unchanged\n".to_string()),
2120                ("d.txt", "deleted\n".to_string()),
2121            ],
2122        );
2123
2124        let project = Project::test(fs, [Path::new(path!("/a"))], cx).await;
2125        let (workspace, cx) =
2126            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
2127
2128        cx.run_until_parked();
2129
2130        cx.focus(&workspace);
2131        cx.update(|window, cx| {
2132            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2133        });
2134
2135        cx.run_until_parked();
2136
2137        let item = workspace.update(cx, |workspace, cx| {
2138            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2139        });
2140        cx.focus(&item);
2141        let editor = item.read_with(cx, |item, cx| item.editor.read(cx).primary_editor().clone());
2142
2143        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
2144
2145        cx.assert_excerpts_with_selections(indoc!(
2146            "
2147            [EXCERPT]
2148            before
2149            really changed
2150            [EXCERPT]
2151            [FOLDED]
2152            [EXCERPT]
2153            ˇcreated
2154        "
2155        ));
2156
2157        cx.dispatch_action(editor::actions::GoToPreviousHunk);
2158
2159        cx.assert_excerpts_with_selections(indoc!(
2160            "
2161            [EXCERPT]
2162            before
2163            really changed
2164            [EXCERPT]
2165            ˇ[FOLDED]
2166            [EXCERPT]
2167            created
2168        "
2169        ));
2170
2171        cx.dispatch_action(editor::actions::GoToPreviousHunk);
2172
2173        cx.assert_excerpts_with_selections(indoc!(
2174            "
2175            [EXCERPT]
2176            ˇbefore
2177            really changed
2178            [EXCERPT]
2179            [FOLDED]
2180            [EXCERPT]
2181            created
2182        "
2183        ));
2184    }
2185
2186    #[gpui::test]
2187    async fn test_excerpts_splitting_after_restoring_the_middle_excerpt(cx: &mut TestAppContext) {
2188        init_test(cx);
2189
2190        let git_contents = indoc! {r#"
2191            #[rustfmt::skip]
2192            fn main() {
2193                let x = 0.0; // this line will be removed
2194                // 1
2195                // 2
2196                // 3
2197                let y = 0.0; // this line will be removed
2198                // 1
2199                // 2
2200                // 3
2201                let arr = [
2202                    0.0, // this line will be removed
2203                    0.0, // this line will be removed
2204                    0.0, // this line will be removed
2205                    0.0, // this line will be removed
2206                ];
2207            }
2208        "#};
2209        let buffer_contents = indoc! {"
2210            #[rustfmt::skip]
2211            fn main() {
2212                // 1
2213                // 2
2214                // 3
2215                // 1
2216                // 2
2217                // 3
2218                let arr = [
2219                ];
2220            }
2221        "};
2222
2223        let fs = FakeFs::new(cx.executor());
2224        fs.insert_tree(
2225            path!("/a"),
2226            json!({
2227                ".git": {},
2228                "main.rs": buffer_contents,
2229            }),
2230        )
2231        .await;
2232
2233        fs.set_head_and_index_for_repo(
2234            Path::new(path!("/a/.git")),
2235            &[("main.rs", git_contents.to_owned())],
2236        );
2237
2238        let project = Project::test(fs, [Path::new(path!("/a"))], cx).await;
2239        let (workspace, cx) =
2240            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
2241
2242        cx.run_until_parked();
2243
2244        cx.focus(&workspace);
2245        cx.update(|window, cx| {
2246            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2247        });
2248
2249        cx.run_until_parked();
2250
2251        let item = workspace.update(cx, |workspace, cx| {
2252            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2253        });
2254        cx.focus(&item);
2255        let editor = item.read_with(cx, |item, cx| item.editor.read(cx).primary_editor().clone());
2256
2257        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
2258
2259        cx.assert_excerpts_with_selections(&format!("[EXCERPT]\nˇ{git_contents}"));
2260
2261        cx.dispatch_action(editor::actions::GoToHunk);
2262        cx.dispatch_action(editor::actions::GoToHunk);
2263        cx.dispatch_action(git::Restore);
2264        cx.dispatch_action(editor::actions::MoveToBeginning);
2265
2266        cx.assert_excerpts_with_selections(&format!("[EXCERPT]\nˇ{git_contents}"));
2267    }
2268
2269    #[gpui::test]
2270    async fn test_saving_resolved_conflicts(cx: &mut TestAppContext) {
2271        init_test(cx);
2272
2273        let fs = FakeFs::new(cx.executor());
2274        fs.insert_tree(
2275            path!("/project"),
2276            json!({
2277                ".git": {},
2278                "foo": "<<<<<<< x\nours\n=======\ntheirs\n>>>>>>> y\n",
2279            }),
2280        )
2281        .await;
2282        fs.set_status_for_repo(
2283            Path::new(path!("/project/.git")),
2284            &[(
2285                "foo",
2286                UnmergedStatus {
2287                    first_head: UnmergedStatusCode::Updated,
2288                    second_head: UnmergedStatusCode::Updated,
2289                }
2290                .into(),
2291            )],
2292        );
2293        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
2294        let (workspace, cx) =
2295            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2296        let diff = cx.new_window_entity(|window, cx| {
2297            ProjectDiff::new(project.clone(), workspace, window, cx)
2298        });
2299        cx.run_until_parked();
2300
2301        cx.update(|window, cx| {
2302            let editor = diff.read(cx).editor.read(cx).primary_editor().clone();
2303            let excerpt_ids = editor.read(cx).buffer().read(cx).excerpt_ids();
2304            assert_eq!(excerpt_ids.len(), 1);
2305            let excerpt_id = excerpt_ids[0];
2306            let buffer = editor
2307                .read(cx)
2308                .buffer()
2309                .read(cx)
2310                .all_buffers()
2311                .into_iter()
2312                .next()
2313                .unwrap();
2314            let buffer_id = buffer.read(cx).remote_id();
2315            let conflict_set = diff
2316                .read(cx)
2317                .editor
2318                .read(cx)
2319                .primary_editor()
2320                .read(cx)
2321                .addon::<ConflictAddon>()
2322                .unwrap()
2323                .conflict_set(buffer_id)
2324                .unwrap();
2325            assert!(conflict_set.read(cx).has_conflict);
2326            let snapshot = conflict_set.read(cx).snapshot();
2327            assert_eq!(snapshot.conflicts.len(), 1);
2328
2329            let ours_range = snapshot.conflicts[0].ours.clone();
2330
2331            resolve_conflict(
2332                editor.downgrade(),
2333                excerpt_id,
2334                snapshot.conflicts[0].clone(),
2335                vec![ours_range],
2336                window,
2337                cx,
2338            )
2339        })
2340        .await;
2341
2342        let contents = fs.read_file_sync(path!("/project/foo")).unwrap();
2343        let contents = String::from_utf8(contents).unwrap();
2344        assert_eq!(contents, "ours\n");
2345    }
2346
2347    #[gpui::test]
2348    async fn test_new_hunk_in_modified_file(cx: &mut TestAppContext) {
2349        init_test(cx);
2350
2351        let fs = FakeFs::new(cx.executor());
2352        fs.insert_tree(
2353            path!("/project"),
2354            json!({
2355                ".git": {},
2356                "foo.txt": "
2357                    one
2358                    two
2359                    three
2360                    four
2361                    five
2362                    six
2363                    seven
2364                    eight
2365                    nine
2366                    ten
2367                    ELEVEN
2368                    twelve
2369                ".unindent()
2370            }),
2371        )
2372        .await;
2373        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
2374        let (workspace, cx) =
2375            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2376        let diff = cx.new_window_entity(|window, cx| {
2377            ProjectDiff::new(project.clone(), workspace, window, cx)
2378        });
2379        cx.run_until_parked();
2380
2381        fs.set_head_and_index_for_repo(
2382            Path::new(path!("/project/.git")),
2383            &[(
2384                "foo.txt",
2385                "
2386                    one
2387                    two
2388                    three
2389                    four
2390                    five
2391                    six
2392                    seven
2393                    eight
2394                    nine
2395                    ten
2396                    eleven
2397                    twelve
2398                "
2399                .unindent(),
2400            )],
2401        );
2402        cx.run_until_parked();
2403
2404        let editor = diff.read_with(cx, |diff, cx| diff.editor.read(cx).primary_editor().clone());
2405
2406        assert_state_with_diff(
2407            &editor,
2408            cx,
2409            &"
2410                  ˇnine
2411                  ten
2412                - eleven
2413                + ELEVEN
2414                  twelve
2415            "
2416            .unindent(),
2417        );
2418
2419        // The project diff updates its excerpts when a new hunk appears in a buffer that already has a diff.
2420        let buffer = project
2421            .update(cx, |project, cx| {
2422                project.open_local_buffer(path!("/project/foo.txt"), cx)
2423            })
2424            .await
2425            .unwrap();
2426        buffer.update(cx, |buffer, cx| {
2427            buffer.edit_via_marked_text(
2428                &"
2429                    one
2430                    «TWO»
2431                    three
2432                    four
2433                    five
2434                    six
2435                    seven
2436                    eight
2437                    nine
2438                    ten
2439                    ELEVEN
2440                    twelve
2441                "
2442                .unindent(),
2443                None,
2444                cx,
2445            );
2446        });
2447        project
2448            .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
2449            .await
2450            .unwrap();
2451        cx.run_until_parked();
2452
2453        assert_state_with_diff(
2454            &editor,
2455            cx,
2456            &"
2457                  one
2458                - two
2459                + TWO
2460                  three
2461                  four
2462                  five
2463                  ˇnine
2464                  ten
2465                - eleven
2466                + ELEVEN
2467                  twelve
2468            "
2469            .unindent(),
2470        );
2471    }
2472
2473    #[gpui::test]
2474    async fn test_branch_diff(cx: &mut TestAppContext) {
2475        init_test(cx);
2476
2477        let fs = FakeFs::new(cx.executor());
2478        fs.insert_tree(
2479            path!("/project"),
2480            json!({
2481                ".git": {},
2482                "a.txt": "C",
2483                "b.txt": "new",
2484                "c.txt": "in-merge-base-and-work-tree",
2485                "d.txt": "created-in-head",
2486            }),
2487        )
2488        .await;
2489        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
2490        let (workspace, cx) =
2491            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2492        let diff = cx
2493            .update(|window, cx| {
2494                ProjectDiff::new_with_default_branch(project.clone(), workspace, window, cx)
2495            })
2496            .await
2497            .unwrap();
2498        cx.run_until_parked();
2499
2500        fs.set_head_for_repo(
2501            Path::new(path!("/project/.git")),
2502            &[("a.txt", "B".into()), ("d.txt", "created-in-head".into())],
2503            "sha",
2504        );
2505        // fs.set_index_for_repo(dot_git, index_state);
2506        fs.set_merge_base_content_for_repo(
2507            Path::new(path!("/project/.git")),
2508            &[
2509                ("a.txt", "A".into()),
2510                ("c.txt", "in-merge-base-and-work-tree".into()),
2511            ],
2512        );
2513        cx.run_until_parked();
2514
2515        let editor = diff.read_with(cx, |diff, cx| diff.editor.read(cx).primary_editor().clone());
2516
2517        assert_state_with_diff(
2518            &editor,
2519            cx,
2520            &"
2521                - A
2522                + ˇC
2523                + new
2524                + created-in-head"
2525                .unindent(),
2526        );
2527
2528        let statuses: HashMap<Arc<RelPath>, Option<FileStatus>> =
2529            editor.update(cx, |editor, cx| {
2530                editor
2531                    .buffer()
2532                    .read(cx)
2533                    .all_buffers()
2534                    .iter()
2535                    .map(|buffer| {
2536                        (
2537                            buffer.read(cx).file().unwrap().path().clone(),
2538                            editor.status_for_buffer_id(buffer.read(cx).remote_id(), cx),
2539                        )
2540                    })
2541                    .collect()
2542            });
2543
2544        assert_eq!(
2545            statuses,
2546            HashMap::from_iter([
2547                (
2548                    rel_path("a.txt").into_arc(),
2549                    Some(FileStatus::Tracked(TrackedStatus {
2550                        index_status: git::status::StatusCode::Modified,
2551                        worktree_status: git::status::StatusCode::Modified
2552                    }))
2553                ),
2554                (rel_path("b.txt").into_arc(), Some(FileStatus::Untracked)),
2555                (
2556                    rel_path("d.txt").into_arc(),
2557                    Some(FileStatus::Tracked(TrackedStatus {
2558                        index_status: git::status::StatusCode::Added,
2559                        worktree_status: git::status::StatusCode::Added
2560                    }))
2561                )
2562            ])
2563        );
2564    }
2565
2566    #[gpui::test]
2567    async fn test_update_on_uncommit(cx: &mut TestAppContext) {
2568        init_test(cx);
2569
2570        let fs = FakeFs::new(cx.executor());
2571        fs.insert_tree(
2572            path!("/project"),
2573            json!({
2574                ".git": {},
2575                "README.md": "# My cool project\n".to_owned()
2576            }),
2577        )
2578        .await;
2579        fs.set_head_and_index_for_repo(
2580            Path::new(path!("/project/.git")),
2581            &[("README.md", "# My cool project\n".to_owned())],
2582        );
2583        let project = Project::test(fs.clone(), [Path::new(path!("/project"))], cx).await;
2584        let worktree_id = project.read_with(cx, |project, cx| {
2585            project.worktrees(cx).next().unwrap().read(cx).id()
2586        });
2587        let (workspace, cx) =
2588            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2589        cx.run_until_parked();
2590
2591        let _editor = workspace
2592            .update_in(cx, |workspace, window, cx| {
2593                workspace.open_path((worktree_id, rel_path("README.md")), None, true, window, cx)
2594            })
2595            .await
2596            .unwrap()
2597            .downcast::<Editor>()
2598            .unwrap();
2599
2600        cx.focus(&workspace);
2601        cx.update(|window, cx| {
2602            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2603        });
2604        cx.run_until_parked();
2605        let item = workspace.update(cx, |workspace, cx| {
2606            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2607        });
2608        cx.focus(&item);
2609        let editor = item.read_with(cx, |item, cx| item.editor.read(cx).primary_editor().clone());
2610
2611        fs.set_head_and_index_for_repo(
2612            Path::new(path!("/project/.git")),
2613            &[(
2614                "README.md",
2615                "# My cool project\nDetails to come.\n".to_owned(),
2616            )],
2617        );
2618        cx.run_until_parked();
2619
2620        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
2621
2622        cx.assert_excerpts_with_selections("[EXCERPT]\nˇ# My cool project\nDetails to come.\n");
2623    }
2624}