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    resolve_active_repository,
   7};
   8use anyhow::{Context as _, Result, anyhow};
   9use buffer_diff::{BufferDiff, DiffHunkSecondaryStatus};
  10use collections::{HashMap, HashSet};
  11use editor::{
  12    Addon, Editor, EditorEvent, EditorSettings, SelectionEffects, SplittableEditor,
  13    actions::{GoToHunk, GoToPreviousHunk, SendReviewToAgent},
  14    multibuffer_context_lines,
  15    scroll::Autoscroll,
  16};
  17
  18use git::{
  19    Commit, StageAll, StageAndNext, ToggleStaged, UnstageAll, UnstageAndNext,
  20    repository::{Branch, RepoPath, Upstream, UpstreamTracking, UpstreamTrackingStatus},
  21    status::FileStatus,
  22};
  23use gpui::{
  24    Action, AnyElement, App, AppContext as _, AsyncWindowContext, Entity, EventEmitter,
  25    FocusHandle, Focusable, Render, Subscription, Task, WeakEntity, actions,
  26};
  27use language::{Anchor, Buffer, Capability, OffsetRangeExt};
  28use multi_buffer::{MultiBuffer, PathKey};
  29use project::{
  30    Project, ProjectPath,
  31    git_store::{
  32        Repository,
  33        branch_diff::{self, BranchDiffEvent, DiffBase},
  34    },
  35};
  36use settings::{Settings, SettingsStore};
  37use smol::future::yield_now;
  38use std::any::{Any, TypeId};
  39use std::sync::Arc;
  40use theme::ActiveTheme;
  41use ui::{KeyBinding, Tooltip, prelude::*, vertical_divider};
  42use util::{ResultExt as _, rel_path::RelPath};
  43use workspace::{
  44    CloseActiveItem, ItemNavHistory, SerializableItem, ToolbarItemEvent, ToolbarItemLocation,
  45    ToolbarItemView, Workspace,
  46    item::{Item, ItemEvent, ItemHandle, SaveOptions, TabContentParams},
  47    notifications::NotifyTaskExt,
  48    searchable::SearchableItemHandle,
  49};
  50use ztracing::instrument;
  51
  52actions!(
  53    git,
  54    [
  55        /// Shows the diff between the working directory and the index.
  56        Diff,
  57        /// Adds files to the git staging area.
  58        Add,
  59        /// Shows the diff between the working directory and your default
  60        /// branch (typically main or master).
  61        BranchDiff,
  62        LeaderAndFollower,
  63    ]
  64);
  65
  66pub struct ProjectDiff {
  67    project: Entity<Project>,
  68    multibuffer: Entity<MultiBuffer>,
  69    branch_diff: Entity<branch_diff::BranchDiff>,
  70    editor: Entity<SplittableEditor>,
  71    buffer_diff_subscriptions: HashMap<Arc<RelPath>, (Entity<BufferDiff>, Subscription)>,
  72    workspace: WeakEntity<Workspace>,
  73    focus_handle: FocusHandle,
  74    pending_scroll: Option<PathKey>,
  75    review_comment_count: usize,
  76    _task: Task<Result<()>>,
  77    _subscription: Subscription,
  78}
  79
  80#[derive(Clone, Copy, Debug, PartialEq, Eq)]
  81pub enum RefreshReason {
  82    DiffChanged,
  83    StatusesChanged,
  84    EditorSaved,
  85}
  86
  87const CONFLICT_SORT_PREFIX: u64 = 1;
  88const TRACKED_SORT_PREFIX: u64 = 2;
  89const NEW_SORT_PREFIX: u64 = 3;
  90
  91impl ProjectDiff {
  92    pub(crate) fn register(workspace: &mut Workspace, cx: &mut Context<Workspace>) {
  93        workspace.register_action(Self::deploy);
  94        workspace.register_action(Self::deploy_branch_diff);
  95        workspace.register_action(|workspace, _: &Add, window, cx| {
  96            Self::deploy(workspace, &Diff, window, cx);
  97        });
  98        workspace::register_serializable_item::<ProjectDiff>(cx);
  99    }
 100
 101    fn deploy(
 102        workspace: &mut Workspace,
 103        _: &Diff,
 104        window: &mut Window,
 105        cx: &mut Context<Workspace>,
 106    ) {
 107        Self::deploy_at(workspace, None, window, cx)
 108    }
 109
 110    fn deploy_branch_diff(
 111        workspace: &mut Workspace,
 112        _: &BranchDiff,
 113        window: &mut Window,
 114        cx: &mut Context<Workspace>,
 115    ) {
 116        telemetry::event!("Git Branch Diff Opened");
 117        let project = workspace.project().clone();
 118
 119        let existing = workspace
 120            .items_of_type::<Self>(cx)
 121            .find(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Merge { .. }));
 122        if let Some(existing) = existing {
 123            workspace.activate_item(&existing, true, true, window, cx);
 124            return;
 125        }
 126        let workspace = cx.entity();
 127        window
 128            .spawn(cx, async move |cx| {
 129                let this = cx
 130                    .update(|window, cx| {
 131                        Self::new_with_default_branch(project, workspace.clone(), window, cx)
 132                    })?
 133                    .await?;
 134                workspace
 135                    .update_in(cx, |workspace, window, cx| {
 136                        workspace.add_item_to_active_pane(Box::new(this), None, true, window, cx);
 137                    })
 138                    .ok();
 139                anyhow::Ok(())
 140            })
 141            .detach_and_notify_err(window, cx);
 142    }
 143
 144    pub fn deploy_at(
 145        workspace: &mut Workspace,
 146        entry: Option<GitStatusEntry>,
 147        window: &mut Window,
 148        cx: &mut Context<Workspace>,
 149    ) {
 150        telemetry::event!(
 151            "Git Diff Opened",
 152            source = if entry.is_some() {
 153                "Git Panel"
 154            } else {
 155                "Action"
 156            }
 157        );
 158        let intended_repo = resolve_active_repository(workspace, cx);
 159
 160        let existing = workspace
 161            .items_of_type::<Self>(cx)
 162            .find(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Head));
 163        let project_diff = if let Some(existing) = existing {
 164            existing.update(cx, |project_diff, cx| {
 165                project_diff.move_to_beginning(window, cx);
 166            });
 167
 168            workspace.activate_item(&existing, true, true, window, cx);
 169            existing
 170        } else {
 171            let workspace_handle = cx.entity();
 172            let project_diff =
 173                cx.new(|cx| Self::new(workspace.project().clone(), workspace_handle, window, cx));
 174            workspace.add_item_to_active_pane(
 175                Box::new(project_diff.clone()),
 176                None,
 177                true,
 178                window,
 179                cx,
 180            );
 181            project_diff
 182        };
 183
 184        if let Some(intended) = &intended_repo {
 185            let needs_switch = project_diff
 186                .read(cx)
 187                .branch_diff
 188                .read(cx)
 189                .repo()
 190                .map_or(true, |current| current.read(cx).id != intended.read(cx).id);
 191            if needs_switch {
 192                project_diff.update(cx, |project_diff, cx| {
 193                    project_diff.branch_diff.update(cx, |branch_diff, cx| {
 194                        branch_diff.set_repo(Some(intended.clone()), cx);
 195                    });
 196                });
 197            }
 198        }
 199
 200        if let Some(entry) = entry {
 201            project_diff.update(cx, |project_diff, cx| {
 202                project_diff.move_to_entry(entry, window, cx);
 203            })
 204        }
 205    }
 206
 207    pub fn deploy_at_project_path(
 208        workspace: &mut Workspace,
 209        project_path: ProjectPath,
 210        window: &mut Window,
 211        cx: &mut Context<Workspace>,
 212    ) {
 213        telemetry::event!("Git Diff Opened", source = "Agent Panel");
 214        let existing = workspace
 215            .items_of_type::<Self>(cx)
 216            .find(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Head));
 217        let project_diff = if let Some(existing) = existing {
 218            workspace.activate_item(&existing, true, true, window, cx);
 219            existing
 220        } else {
 221            let workspace_handle = cx.entity();
 222            let project_diff =
 223                cx.new(|cx| Self::new(workspace.project().clone(), workspace_handle, window, cx));
 224            workspace.add_item_to_active_pane(
 225                Box::new(project_diff.clone()),
 226                None,
 227                true,
 228                window,
 229                cx,
 230            );
 231            project_diff
 232        };
 233        project_diff.update(cx, |project_diff, cx| {
 234            project_diff.move_to_project_path(&project_path, window, cx);
 235        });
 236    }
 237
 238    pub fn autoscroll(&self, cx: &mut Context<Self>) {
 239        self.editor.update(cx, |editor, cx| {
 240            editor.rhs_editor().update(cx, |editor, cx| {
 241                editor.request_autoscroll(Autoscroll::fit(), cx);
 242            })
 243        })
 244    }
 245
 246    fn new_with_default_branch(
 247        project: Entity<Project>,
 248        workspace: Entity<Workspace>,
 249        window: &mut Window,
 250        cx: &mut App,
 251    ) -> Task<Result<Entity<Self>>> {
 252        let Some(repo) = project.read(cx).git_store().read(cx).active_repository() else {
 253            return Task::ready(Err(anyhow!("No active repository")));
 254        };
 255        let main_branch = repo.update(cx, |repo, _| repo.default_branch(true));
 256        window.spawn(cx, async move |cx| {
 257            let main_branch = main_branch
 258                .await??
 259                .context("Could not determine default branch")?;
 260
 261            let branch_diff = cx.new_window_entity(|window, cx| {
 262                branch_diff::BranchDiff::new(
 263                    DiffBase::Merge {
 264                        base_ref: main_branch,
 265                    },
 266                    project.clone(),
 267                    window,
 268                    cx,
 269                )
 270            })?;
 271            cx.new_window_entity(|window, cx| {
 272                Self::new_impl(branch_diff, project, workspace, window, cx)
 273            })
 274        })
 275    }
 276
 277    fn new(
 278        project: Entity<Project>,
 279        workspace: Entity<Workspace>,
 280        window: &mut Window,
 281        cx: &mut Context<Self>,
 282    ) -> Self {
 283        let branch_diff =
 284            cx.new(|cx| branch_diff::BranchDiff::new(DiffBase::Head, project.clone(), window, cx));
 285        Self::new_impl(branch_diff, project, workspace, window, cx)
 286    }
 287
 288    fn new_impl(
 289        branch_diff: Entity<branch_diff::BranchDiff>,
 290        project: Entity<Project>,
 291        workspace: Entity<Workspace>,
 292        window: &mut Window,
 293        cx: &mut Context<Self>,
 294    ) -> Self {
 295        let focus_handle = cx.focus_handle();
 296        let multibuffer = cx.new(|cx| {
 297            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite);
 298            multibuffer.set_all_diff_hunks_expanded(cx);
 299            multibuffer
 300        });
 301
 302        let editor = cx.new(|cx| {
 303            let diff_display_editor = SplittableEditor::new(
 304                EditorSettings::get_global(cx).diff_view_style,
 305                multibuffer.clone(),
 306                project.clone(),
 307                workspace.clone(),
 308                window,
 309                cx,
 310            );
 311            match branch_diff.read(cx).diff_base() {
 312                DiffBase::Head => {}
 313                DiffBase::Merge { .. } => diff_display_editor.set_render_diff_hunk_controls(
 314                    Arc::new(|_, _, _, _, _, _, _, _| gpui::Empty.into_any_element()),
 315                    cx,
 316                ),
 317            }
 318            diff_display_editor.rhs_editor().update(cx, |editor, cx| {
 319                editor.disable_diagnostics(cx);
 320                editor.set_show_diff_review_button(true, cx);
 321
 322                match branch_diff.read(cx).diff_base() {
 323                    DiffBase::Head => {
 324                        editor.register_addon(GitPanelAddon {
 325                            workspace: workspace.downgrade(),
 326                        });
 327                    }
 328                    DiffBase::Merge { .. } => {
 329                        editor.register_addon(BranchDiffAddon {
 330                            branch_diff: branch_diff.clone(),
 331                        });
 332                        editor.start_temporary_diff_override();
 333                    }
 334                }
 335            });
 336            diff_display_editor
 337        });
 338        let editor_subscription = cx.subscribe_in(&editor, window, Self::handle_editor_event);
 339
 340        let primary_editor = editor.read(cx).rhs_editor().clone();
 341        let review_comment_subscription =
 342            cx.subscribe(&primary_editor, |this, _editor, event: &EditorEvent, cx| {
 343                if let EditorEvent::ReviewCommentsChanged { total_count } = event {
 344                    this.review_comment_count = *total_count;
 345                    cx.notify();
 346                }
 347            });
 348
 349        let branch_diff_subscription = cx.subscribe_in(
 350            &branch_diff,
 351            window,
 352            move |this, _git_store, event, window, cx| match event {
 353                BranchDiffEvent::FileListChanged => {
 354                    this._task = window.spawn(cx, {
 355                        let this = cx.weak_entity();
 356                        async |cx| Self::refresh(this, RefreshReason::StatusesChanged, cx).await
 357                    })
 358                }
 359            },
 360        );
 361
 362        let mut was_sort_by_path = GitPanelSettings::get_global(cx).sort_by_path;
 363        let mut was_collapse_untracked_diff =
 364            GitPanelSettings::get_global(cx).collapse_untracked_diff;
 365        cx.observe_global_in::<SettingsStore>(window, move |this, window, cx| {
 366            let is_sort_by_path = GitPanelSettings::get_global(cx).sort_by_path;
 367            let is_collapse_untracked_diff =
 368                GitPanelSettings::get_global(cx).collapse_untracked_diff;
 369            if is_sort_by_path != was_sort_by_path
 370                || is_collapse_untracked_diff != was_collapse_untracked_diff
 371            {
 372                this._task = {
 373                    window.spawn(cx, {
 374                        let this = cx.weak_entity();
 375                        async |cx| Self::refresh(this, RefreshReason::StatusesChanged, cx).await
 376                    })
 377                }
 378            }
 379            was_sort_by_path = is_sort_by_path;
 380            was_collapse_untracked_diff = is_collapse_untracked_diff;
 381        })
 382        .detach();
 383
 384        let task = window.spawn(cx, {
 385            let this = cx.weak_entity();
 386            async |cx| Self::refresh(this, RefreshReason::StatusesChanged, cx).await
 387        });
 388
 389        Self {
 390            project,
 391            workspace: workspace.downgrade(),
 392            branch_diff,
 393            focus_handle,
 394            editor,
 395            multibuffer,
 396            buffer_diff_subscriptions: Default::default(),
 397            pending_scroll: None,
 398            review_comment_count: 0,
 399            _task: task,
 400            _subscription: Subscription::join(
 401                branch_diff_subscription,
 402                Subscription::join(editor_subscription, review_comment_subscription),
 403            ),
 404        }
 405    }
 406
 407    pub fn diff_base<'a>(&'a self, cx: &'a App) -> &'a DiffBase {
 408        self.branch_diff.read(cx).diff_base()
 409    }
 410
 411    pub fn move_to_entry(
 412        &mut self,
 413        entry: GitStatusEntry,
 414        window: &mut Window,
 415        cx: &mut Context<Self>,
 416    ) {
 417        let Some(git_repo) = self.branch_diff.read(cx).repo() else {
 418            return;
 419        };
 420        let repo = git_repo.read(cx);
 421        let sort_prefix = sort_prefix(repo, &entry.repo_path, entry.status, cx);
 422        let path_key = PathKey::with_sort_prefix(sort_prefix, entry.repo_path.as_ref().clone());
 423
 424        self.move_to_path(path_key, window, cx)
 425    }
 426
 427    pub fn move_to_project_path(
 428        &mut self,
 429        project_path: &ProjectPath,
 430        window: &mut Window,
 431        cx: &mut Context<Self>,
 432    ) {
 433        let Some(git_repo) = self.branch_diff.read(cx).repo() else {
 434            return;
 435        };
 436        let Some(repo_path) = git_repo
 437            .read(cx)
 438            .project_path_to_repo_path(project_path, cx)
 439        else {
 440            return;
 441        };
 442        let status = git_repo
 443            .read(cx)
 444            .status_for_path(&repo_path)
 445            .map(|entry| entry.status)
 446            .unwrap_or(FileStatus::Untracked);
 447        let sort_prefix = sort_prefix(&git_repo.read(cx), &repo_path, status, cx);
 448        let path_key = PathKey::with_sort_prefix(sort_prefix, repo_path.as_ref().clone());
 449        self.move_to_path(path_key, window, cx)
 450    }
 451
 452    pub fn active_path(&self, cx: &App) -> Option<ProjectPath> {
 453        let editor = self.editor.read(cx).last_selected_editor().read(cx);
 454        let position = editor.selections.newest_anchor().head();
 455        let multi_buffer = editor.buffer().read(cx);
 456        let (_, buffer, _) = multi_buffer.excerpt_containing(position, cx)?;
 457
 458        let file = buffer.read(cx).file()?;
 459        Some(ProjectPath {
 460            worktree_id: file.worktree_id(cx),
 461            path: file.path().clone(),
 462        })
 463    }
 464
 465    fn move_to_beginning(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 466        self.editor.update(cx, |editor, cx| {
 467            editor.rhs_editor().update(cx, |editor, cx| {
 468                editor.move_to_beginning(&Default::default(), window, cx);
 469            });
 470        });
 471    }
 472
 473    fn move_to_path(&mut self, path_key: PathKey, window: &mut Window, cx: &mut Context<Self>) {
 474        if let Some(position) = self.multibuffer.read(cx).location_for_path(&path_key, cx) {
 475            self.editor.update(cx, |editor, cx| {
 476                editor.rhs_editor().update(cx, |editor, cx| {
 477                    editor.change_selections(
 478                        SelectionEffects::scroll(Autoscroll::focused()),
 479                        window,
 480                        cx,
 481                        |s| {
 482                            s.select_ranges([position..position]);
 483                        },
 484                    )
 485                })
 486            });
 487        } else {
 488            self.pending_scroll = Some(path_key);
 489        }
 490    }
 491
 492    /// Returns the total count of review comments across all hunks/files.
 493    pub fn total_review_comment_count(&self) -> usize {
 494        self.review_comment_count
 495    }
 496
 497    /// Returns a reference to the splittable editor.
 498    pub fn editor(&self) -> &Entity<SplittableEditor> {
 499        &self.editor
 500    }
 501
 502    fn button_states(&self, cx: &App) -> ButtonStates {
 503        let editor = self.editor.read(cx).rhs_editor().read(cx);
 504        let snapshot = self.multibuffer.read(cx).snapshot(cx);
 505        let prev_next = snapshot.diff_hunks().nth(1).is_some();
 506        let mut selection = true;
 507
 508        let mut ranges = editor
 509            .selections
 510            .disjoint_anchor_ranges()
 511            .collect::<Vec<_>>();
 512        if !ranges.iter().any(|range| range.start != range.end) {
 513            selection = false;
 514            if let Some((excerpt_id, _, range)) = self
 515                .editor
 516                .read(cx)
 517                .rhs_editor()
 518                .read(cx)
 519                .active_excerpt(cx)
 520            {
 521                ranges = vec![multi_buffer::Anchor::range_in_buffer(excerpt_id, range)];
 522            } else {
 523                ranges = Vec::default();
 524            }
 525        }
 526        let mut has_staged_hunks = false;
 527        let mut has_unstaged_hunks = false;
 528        for hunk in editor.diff_hunks_in_ranges(&ranges, &snapshot) {
 529            match hunk.status.secondary {
 530                DiffHunkSecondaryStatus::HasSecondaryHunk
 531                | DiffHunkSecondaryStatus::SecondaryHunkAdditionPending => {
 532                    has_unstaged_hunks = true;
 533                }
 534                DiffHunkSecondaryStatus::OverlapsWithSecondaryHunk => {
 535                    has_staged_hunks = true;
 536                    has_unstaged_hunks = true;
 537                }
 538                DiffHunkSecondaryStatus::NoSecondaryHunk
 539                | DiffHunkSecondaryStatus::SecondaryHunkRemovalPending => {
 540                    has_staged_hunks = true;
 541                }
 542            }
 543        }
 544        let mut stage_all = false;
 545        let mut unstage_all = false;
 546        self.workspace
 547            .read_with(cx, |workspace, cx| {
 548                if let Some(git_panel) = workspace.panel::<GitPanel>(cx) {
 549                    let git_panel = git_panel.read(cx);
 550                    stage_all = git_panel.can_stage_all();
 551                    unstage_all = git_panel.can_unstage_all();
 552                }
 553            })
 554            .ok();
 555
 556        ButtonStates {
 557            stage: has_unstaged_hunks,
 558            unstage: has_staged_hunks,
 559            prev_next,
 560            selection,
 561            stage_all,
 562            unstage_all,
 563        }
 564    }
 565
 566    fn handle_editor_event(
 567        &mut self,
 568        editor: &Entity<SplittableEditor>,
 569        event: &EditorEvent,
 570        window: &mut Window,
 571        cx: &mut Context<Self>,
 572    ) {
 573        match event {
 574            EditorEvent::SelectionsChanged { local: true } => {
 575                let Some(project_path) = self.active_path(cx) else {
 576                    return;
 577                };
 578                self.workspace
 579                    .update(cx, |workspace, cx| {
 580                        if let Some(git_panel) = workspace.panel::<GitPanel>(cx) {
 581                            git_panel.update(cx, |git_panel, cx| {
 582                                git_panel.select_entry_by_path(project_path, window, cx)
 583                            })
 584                        }
 585                    })
 586                    .ok();
 587            }
 588            EditorEvent::Saved => {
 589                self._task = cx.spawn_in(window, async move |this, cx| {
 590                    Self::refresh(this, RefreshReason::EditorSaved, cx).await
 591                });
 592            }
 593            _ => {}
 594        }
 595        if editor.focus_handle(cx).contains_focused(window, cx)
 596            && self.multibuffer.read(cx).is_empty()
 597        {
 598            self.focus_handle.focus(window, cx)
 599        }
 600    }
 601
 602    #[instrument(skip_all)]
 603    fn register_buffer(
 604        &mut self,
 605        path_key: PathKey,
 606        file_status: FileStatus,
 607        buffer: Entity<Buffer>,
 608        diff: Entity<BufferDiff>,
 609        window: &mut Window,
 610        cx: &mut Context<Self>,
 611    ) {
 612        let subscription = cx.subscribe_in(&diff, window, move |this, _, _, window, cx| {
 613            this._task = window.spawn(cx, {
 614                let this = cx.weak_entity();
 615                async |cx| Self::refresh(this, RefreshReason::DiffChanged, cx).await
 616            })
 617        });
 618        self.buffer_diff_subscriptions
 619            .insert(path_key.path.clone(), (diff.clone(), subscription));
 620
 621        // TODO(split-diff) we shouldn't have a conflict addon when split
 622        let conflict_addon = self
 623            .editor
 624            .read(cx)
 625            .rhs_editor()
 626            .read(cx)
 627            .addon::<ConflictAddon>()
 628            .expect("project diff editor should have a conflict addon");
 629
 630        let snapshot = buffer.read(cx).snapshot();
 631        let diff_snapshot = diff.read(cx).snapshot(cx);
 632
 633        let excerpt_ranges = {
 634            let diff_hunk_ranges = diff_snapshot
 635                .hunks_intersecting_range(
 636                    Anchor::min_max_range_for_buffer(snapshot.remote_id()),
 637                    &snapshot,
 638                )
 639                .map(|diff_hunk| diff_hunk.buffer_range.to_point(&snapshot));
 640            let conflicts = conflict_addon
 641                .conflict_set(snapshot.remote_id())
 642                .map(|conflict_set| conflict_set.read(cx).snapshot().conflicts)
 643                .unwrap_or_default();
 644            let mut conflicts = conflicts
 645                .iter()
 646                .map(|conflict| conflict.range.to_point(&snapshot))
 647                .peekable();
 648
 649            if conflicts.peek().is_some() {
 650                conflicts.collect::<Vec<_>>()
 651            } else {
 652                diff_hunk_ranges.collect()
 653            }
 654        };
 655
 656        let (was_empty, is_excerpt_newly_added) = self.editor.update(cx, |editor, cx| {
 657            let was_empty = editor.rhs_editor().read(cx).buffer().read(cx).is_empty();
 658            let (_, is_newly_added) = editor.set_excerpts_for_path(
 659                path_key.clone(),
 660                buffer,
 661                excerpt_ranges,
 662                multibuffer_context_lines(cx),
 663                diff,
 664                cx,
 665            );
 666            (was_empty, is_newly_added)
 667        });
 668
 669        self.editor.update(cx, |editor, cx| {
 670            editor.rhs_editor().update(cx, |editor, cx| {
 671                if was_empty {
 672                    editor.change_selections(
 673                        SelectionEffects::no_scroll(),
 674                        window,
 675                        cx,
 676                        |selections| {
 677                            selections.select_ranges([
 678                                multi_buffer::Anchor::min()..multi_buffer::Anchor::min()
 679                            ])
 680                        },
 681                    );
 682                }
 683                if is_excerpt_newly_added
 684                    && (file_status.is_deleted()
 685                        || (file_status.is_untracked()
 686                            && GitPanelSettings::get_global(cx).collapse_untracked_diff))
 687                {
 688                    editor.fold_buffer(snapshot.text.remote_id(), cx)
 689                }
 690            })
 691        });
 692
 693        if self.multibuffer.read(cx).is_empty()
 694            && self
 695                .editor
 696                .read(cx)
 697                .focus_handle(cx)
 698                .contains_focused(window, cx)
 699        {
 700            self.focus_handle.focus(window, cx);
 701        } else if self.focus_handle.is_focused(window) && !self.multibuffer.read(cx).is_empty() {
 702            self.editor.update(cx, |editor, cx| {
 703                editor.focus_handle(cx).focus(window, cx);
 704            });
 705        }
 706        if self.pending_scroll.as_ref() == Some(&path_key) {
 707            self.move_to_path(path_key, window, cx);
 708        }
 709    }
 710
 711    #[instrument(skip_all)]
 712    pub async fn refresh(
 713        this: WeakEntity<Self>,
 714        reason: RefreshReason,
 715        cx: &mut AsyncWindowContext,
 716    ) -> Result<()> {
 717        let mut path_keys = Vec::new();
 718        let buffers_to_load = this.update(cx, |this, cx| {
 719            let (repo, buffers_to_load) = this.branch_diff.update(cx, |branch_diff, cx| {
 720                let load_buffers = branch_diff.load_buffers(cx);
 721                (branch_diff.repo().cloned(), load_buffers)
 722            });
 723            let mut previous_paths = this
 724                .multibuffer
 725                .read(cx)
 726                .paths()
 727                .cloned()
 728                .collect::<HashSet<_>>();
 729
 730            if let Some(repo) = repo {
 731                let repo = repo.read(cx);
 732
 733                path_keys = Vec::with_capacity(buffers_to_load.len());
 734                for entry in buffers_to_load.iter() {
 735                    let sort_prefix = sort_prefix(&repo, &entry.repo_path, entry.file_status, cx);
 736                    let path_key =
 737                        PathKey::with_sort_prefix(sort_prefix, entry.repo_path.as_ref().clone());
 738                    previous_paths.remove(&path_key);
 739                    path_keys.push(path_key)
 740                }
 741            }
 742
 743            this.editor.update(cx, |editor, cx| {
 744                for path in previous_paths {
 745                    if let Some(buffer) = this.multibuffer.read(cx).buffer_for_path(&path, cx) {
 746                        let skip = match reason {
 747                            RefreshReason::DiffChanged | RefreshReason::EditorSaved => {
 748                                buffer.read(cx).is_dirty()
 749                            }
 750                            RefreshReason::StatusesChanged => false,
 751                        };
 752                        if skip {
 753                            continue;
 754                        }
 755                    }
 756
 757                    this.buffer_diff_subscriptions.remove(&path.path);
 758                    editor.remove_excerpts_for_path(path, cx);
 759                }
 760            });
 761            buffers_to_load
 762        })?;
 763
 764        for (entry, path_key) in buffers_to_load.into_iter().zip(path_keys.into_iter()) {
 765            if let Some((buffer, diff)) = entry.load.await.log_err() {
 766                // We might be lagging behind enough that all future entry.load futures are no longer pending.
 767                // If that is the case, this task will never yield, starving the foreground thread of execution time.
 768                yield_now().await;
 769                cx.update(|window, cx| {
 770                    this.update(cx, |this, cx| {
 771                        let multibuffer = this.multibuffer.read(cx);
 772                        let skip = multibuffer.buffer(buffer.read(cx).remote_id()).is_some()
 773                            && multibuffer
 774                                .diff_for(buffer.read(cx).remote_id())
 775                                .is_some_and(|prev_diff| prev_diff.entity_id() == diff.entity_id())
 776                            && match reason {
 777                                RefreshReason::DiffChanged | RefreshReason::EditorSaved => {
 778                                    buffer.read(cx).is_dirty()
 779                                }
 780                                RefreshReason::StatusesChanged => false,
 781                            };
 782                        if !skip {
 783                            this.register_buffer(
 784                                path_key,
 785                                entry.file_status,
 786                                buffer,
 787                                diff,
 788                                window,
 789                                cx,
 790                            )
 791                        }
 792                    })
 793                    .ok();
 794                })?;
 795            }
 796        }
 797        this.update(cx, |this, cx| {
 798            this.pending_scroll.take();
 799            cx.notify();
 800        })?;
 801
 802        Ok(())
 803    }
 804
 805    #[cfg(any(test, feature = "test-support"))]
 806    pub fn excerpt_paths(&self, cx: &App) -> Vec<std::sync::Arc<util::rel_path::RelPath>> {
 807        self.multibuffer
 808            .read(cx)
 809            .paths()
 810            .map(|key| key.path.clone())
 811            .collect()
 812    }
 813}
 814
 815fn sort_prefix(repo: &Repository, repo_path: &RepoPath, status: FileStatus, cx: &App) -> u64 {
 816    let settings = GitPanelSettings::get_global(cx);
 817
 818    if settings.sort_by_path && !settings.tree_view {
 819        TRACKED_SORT_PREFIX
 820    } else if repo.had_conflict_on_last_merge_head_change(repo_path) {
 821        CONFLICT_SORT_PREFIX
 822    } else if status.is_created() {
 823        NEW_SORT_PREFIX
 824    } else {
 825        TRACKED_SORT_PREFIX
 826    }
 827}
 828
 829impl EventEmitter<EditorEvent> for ProjectDiff {}
 830
 831impl Focusable for ProjectDiff {
 832    fn focus_handle(&self, cx: &App) -> FocusHandle {
 833        if self.multibuffer.read(cx).is_empty() {
 834            self.focus_handle.clone()
 835        } else {
 836            self.editor.focus_handle(cx)
 837        }
 838    }
 839}
 840
 841impl Item for ProjectDiff {
 842    type Event = EditorEvent;
 843
 844    fn tab_icon(&self, _window: &Window, _cx: &App) -> Option<Icon> {
 845        Some(Icon::new(IconName::GitBranch).color(Color::Muted))
 846    }
 847
 848    fn to_item_events(event: &EditorEvent, f: impl FnMut(ItemEvent)) {
 849        Editor::to_item_events(event, f)
 850    }
 851
 852    fn deactivated(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 853        self.editor.update(cx, |editor, cx| {
 854            editor.rhs_editor().update(cx, |primary_editor, cx| {
 855                primary_editor.deactivated(window, cx);
 856            })
 857        });
 858    }
 859
 860    fn navigate(
 861        &mut self,
 862        data: Arc<dyn Any + Send>,
 863        window: &mut Window,
 864        cx: &mut Context<Self>,
 865    ) -> bool {
 866        self.editor.update(cx, |editor, cx| {
 867            editor.rhs_editor().update(cx, |primary_editor, cx| {
 868                primary_editor.navigate(data, window, cx)
 869            })
 870        })
 871    }
 872
 873    fn tab_tooltip_text(&self, _: &App) -> Option<SharedString> {
 874        Some("Project Diff".into())
 875    }
 876
 877    fn tab_content(&self, params: TabContentParams, _window: &Window, cx: &App) -> AnyElement {
 878        Label::new(self.tab_content_text(0, cx))
 879            .color(if params.selected {
 880                Color::Default
 881            } else {
 882                Color::Muted
 883            })
 884            .into_any_element()
 885    }
 886
 887    fn tab_content_text(&self, _detail: usize, cx: &App) -> SharedString {
 888        match self.branch_diff.read(cx).diff_base() {
 889            DiffBase::Head => "Uncommitted Changes".into(),
 890            DiffBase::Merge { base_ref } => format!("Changes since {}", base_ref).into(),
 891        }
 892    }
 893
 894    fn telemetry_event_text(&self) -> Option<&'static str> {
 895        Some("Project Diff Opened")
 896    }
 897
 898    fn as_searchable(&self, _: &Entity<Self>, _cx: &App) -> Option<Box<dyn SearchableItemHandle>> {
 899        Some(Box::new(self.editor.clone()))
 900    }
 901
 902    fn for_each_project_item(
 903        &self,
 904        cx: &App,
 905        f: &mut dyn FnMut(gpui::EntityId, &dyn project::ProjectItem),
 906    ) {
 907        self.editor
 908            .read(cx)
 909            .rhs_editor()
 910            .read(cx)
 911            .for_each_project_item(cx, f)
 912    }
 913
 914    fn set_nav_history(
 915        &mut self,
 916        nav_history: ItemNavHistory,
 917        _: &mut Window,
 918        cx: &mut Context<Self>,
 919    ) {
 920        self.editor.update(cx, |editor, cx| {
 921            editor.rhs_editor().update(cx, |primary_editor, _| {
 922                primary_editor.set_nav_history(Some(nav_history));
 923            })
 924        });
 925    }
 926
 927    fn can_split(&self) -> bool {
 928        true
 929    }
 930
 931    fn clone_on_split(
 932        &self,
 933        _workspace_id: Option<workspace::WorkspaceId>,
 934        window: &mut Window,
 935        cx: &mut Context<Self>,
 936    ) -> Task<Option<Entity<Self>>>
 937    where
 938        Self: Sized,
 939    {
 940        let Some(workspace) = self.workspace.upgrade() else {
 941            return Task::ready(None);
 942        };
 943        Task::ready(Some(cx.new(|cx| {
 944            ProjectDiff::new(self.project.clone(), workspace, window, cx)
 945        })))
 946    }
 947
 948    fn is_dirty(&self, cx: &App) -> bool {
 949        self.multibuffer.read(cx).is_dirty(cx)
 950    }
 951
 952    fn has_conflict(&self, cx: &App) -> bool {
 953        self.multibuffer.read(cx).has_conflict(cx)
 954    }
 955
 956    fn can_save(&self, _: &App) -> bool {
 957        true
 958    }
 959
 960    fn save(
 961        &mut self,
 962        options: SaveOptions,
 963        project: Entity<Project>,
 964        window: &mut Window,
 965        cx: &mut Context<Self>,
 966    ) -> Task<Result<()>> {
 967        self.editor.update(cx, |editor, cx| {
 968            editor.rhs_editor().update(cx, |primary_editor, cx| {
 969                primary_editor.save(options, project, window, cx)
 970            })
 971        })
 972    }
 973
 974    fn save_as(
 975        &mut self,
 976        _: Entity<Project>,
 977        _: ProjectPath,
 978        _window: &mut Window,
 979        _: &mut Context<Self>,
 980    ) -> Task<Result<()>> {
 981        unreachable!()
 982    }
 983
 984    fn reload(
 985        &mut self,
 986        project: Entity<Project>,
 987        window: &mut Window,
 988        cx: &mut Context<Self>,
 989    ) -> Task<Result<()>> {
 990        self.editor.update(cx, |editor, cx| {
 991            editor.rhs_editor().update(cx, |primary_editor, cx| {
 992                primary_editor.reload(project, window, cx)
 993            })
 994        })
 995    }
 996
 997    fn act_as_type<'a>(
 998        &'a self,
 999        type_id: TypeId,
1000        self_handle: &'a Entity<Self>,
1001        cx: &'a App,
1002    ) -> Option<gpui::AnyEntity> {
1003        if type_id == TypeId::of::<Self>() {
1004            Some(self_handle.clone().into())
1005        } else if type_id == TypeId::of::<Editor>() {
1006            Some(self.editor.read(cx).rhs_editor().clone().into())
1007        } else if type_id == TypeId::of::<SplittableEditor>() {
1008            Some(self.editor.clone().into())
1009        } else {
1010            None
1011        }
1012    }
1013
1014    fn added_to_workspace(
1015        &mut self,
1016        workspace: &mut Workspace,
1017        window: &mut Window,
1018        cx: &mut Context<Self>,
1019    ) {
1020        self.editor.update(cx, |editor, cx| {
1021            editor.added_to_workspace(workspace, window, cx)
1022        });
1023    }
1024}
1025
1026impl Render for ProjectDiff {
1027    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1028        let is_empty = self.multibuffer.read(cx).is_empty();
1029
1030        div()
1031            .track_focus(&self.focus_handle)
1032            .key_context(if is_empty { "EmptyPane" } else { "GitDiff" })
1033            .bg(cx.theme().colors().editor_background)
1034            .flex()
1035            .items_center()
1036            .justify_center()
1037            .size_full()
1038            .when(is_empty, |el| {
1039                let remote_button = if let Some(panel) = self
1040                    .workspace
1041                    .upgrade()
1042                    .and_then(|workspace| workspace.read(cx).panel::<GitPanel>(cx))
1043                {
1044                    panel.update(cx, |panel, cx| panel.render_remote_button(cx))
1045                } else {
1046                    None
1047                };
1048                let keybinding_focus_handle = self.focus_handle(cx);
1049                el.child(
1050                    v_flex()
1051                        .gap_1()
1052                        .child(
1053                            h_flex()
1054                                .justify_around()
1055                                .child(Label::new("No uncommitted changes")),
1056                        )
1057                        .map(|el| match remote_button {
1058                            Some(button) => el.child(h_flex().justify_around().child(button)),
1059                            None => el.child(
1060                                h_flex()
1061                                    .justify_around()
1062                                    .child(Label::new("Remote up to date")),
1063                            ),
1064                        })
1065                        .child(
1066                            h_flex().justify_around().mt_1().child(
1067                                Button::new("project-diff-close-button", "Close")
1068                                    // .style(ButtonStyle::Transparent)
1069                                    .key_binding(KeyBinding::for_action_in(
1070                                        &CloseActiveItem::default(),
1071                                        &keybinding_focus_handle,
1072                                        cx,
1073                                    ))
1074                                    .on_click(move |_, window, cx| {
1075                                        window.focus(&keybinding_focus_handle, cx);
1076                                        window.dispatch_action(
1077                                            Box::new(CloseActiveItem::default()),
1078                                            cx,
1079                                        );
1080                                    }),
1081                            ),
1082                        ),
1083                )
1084            })
1085            .when(!is_empty, |el| el.child(self.editor.clone()))
1086    }
1087}
1088
1089impl SerializableItem for ProjectDiff {
1090    fn serialized_item_kind() -> &'static str {
1091        "ProjectDiff"
1092    }
1093
1094    fn cleanup(
1095        _: workspace::WorkspaceId,
1096        _: Vec<workspace::ItemId>,
1097        _: &mut Window,
1098        _: &mut App,
1099    ) -> Task<Result<()>> {
1100        Task::ready(Ok(()))
1101    }
1102
1103    fn deserialize(
1104        project: Entity<Project>,
1105        workspace: WeakEntity<Workspace>,
1106        workspace_id: workspace::WorkspaceId,
1107        item_id: workspace::ItemId,
1108        window: &mut Window,
1109        cx: &mut App,
1110    ) -> Task<Result<Entity<Self>>> {
1111        window.spawn(cx, async move |cx| {
1112            let diff_base = persistence::PROJECT_DIFF_DB.get_diff_base(item_id, workspace_id)?;
1113
1114            let diff = cx.update(|window, cx| {
1115                let branch_diff = cx
1116                    .new(|cx| branch_diff::BranchDiff::new(diff_base, project.clone(), window, cx));
1117                let workspace = workspace.upgrade().context("workspace gone")?;
1118                anyhow::Ok(
1119                    cx.new(|cx| ProjectDiff::new_impl(branch_diff, project, workspace, window, cx)),
1120                )
1121            })??;
1122
1123            Ok(diff)
1124        })
1125    }
1126
1127    fn serialize(
1128        &mut self,
1129        workspace: &mut Workspace,
1130        item_id: workspace::ItemId,
1131        _closing: bool,
1132        _window: &mut Window,
1133        cx: &mut Context<Self>,
1134    ) -> Option<Task<Result<()>>> {
1135        let workspace_id = workspace.database_id()?;
1136        let diff_base = self.diff_base(cx).clone();
1137
1138        Some(cx.background_spawn({
1139            async move {
1140                persistence::PROJECT_DIFF_DB
1141                    .save_diff_base(item_id, workspace_id, diff_base.clone())
1142                    .await
1143            }
1144        }))
1145    }
1146
1147    fn should_serialize(&self, _: &Self::Event) -> bool {
1148        false
1149    }
1150}
1151
1152mod persistence {
1153
1154    use anyhow::Context as _;
1155    use db::{
1156        sqlez::{domain::Domain, thread_safe_connection::ThreadSafeConnection},
1157        sqlez_macros::sql,
1158    };
1159    use project::git_store::branch_diff::DiffBase;
1160    use workspace::{ItemId, WorkspaceDb, WorkspaceId};
1161
1162    pub struct ProjectDiffDb(ThreadSafeConnection);
1163
1164    impl Domain for ProjectDiffDb {
1165        const NAME: &str = stringify!(ProjectDiffDb);
1166
1167        const MIGRATIONS: &[&str] = &[sql!(
1168                CREATE TABLE project_diffs(
1169                    workspace_id INTEGER,
1170                    item_id INTEGER UNIQUE,
1171
1172                    diff_base TEXT,
1173
1174                    PRIMARY KEY(workspace_id, item_id),
1175                    FOREIGN KEY(workspace_id) REFERENCES workspaces(workspace_id)
1176                    ON DELETE CASCADE
1177                ) STRICT;
1178        )];
1179    }
1180
1181    db::static_connection!(PROJECT_DIFF_DB, ProjectDiffDb, [WorkspaceDb]);
1182
1183    impl ProjectDiffDb {
1184        pub async fn save_diff_base(
1185            &self,
1186            item_id: ItemId,
1187            workspace_id: WorkspaceId,
1188            diff_base: DiffBase,
1189        ) -> anyhow::Result<()> {
1190            self.write(move |connection| {
1191                let sql_stmt = sql!(
1192                    INSERT OR REPLACE INTO project_diffs(item_id, workspace_id, diff_base) VALUES (?, ?, ?)
1193                );
1194                let diff_base_str = serde_json::to_string(&diff_base)?;
1195                let mut query = connection.exec_bound::<(ItemId, WorkspaceId, String)>(sql_stmt)?;
1196                query((item_id, workspace_id, diff_base_str)).context(format!(
1197                    "exec_bound failed to execute or parse for: {}",
1198                    sql_stmt
1199                ))
1200            })
1201            .await
1202        }
1203
1204        pub fn get_diff_base(
1205            &self,
1206            item_id: ItemId,
1207            workspace_id: WorkspaceId,
1208        ) -> anyhow::Result<DiffBase> {
1209            let sql_stmt =
1210                sql!(SELECT diff_base FROM project_diffs WHERE item_id =  ?AND workspace_id =  ?);
1211            let diff_base_str = self.select_row_bound::<(ItemId, WorkspaceId), String>(sql_stmt)?(
1212                (item_id, workspace_id),
1213            )
1214            .context(::std::format!(
1215                "Error in get_diff_base, select_row_bound failed to execute or parse for: {}",
1216                sql_stmt
1217            ))?;
1218            let Some(diff_base_str) = diff_base_str else {
1219                return Ok(DiffBase::Head);
1220            };
1221            serde_json::from_str(&diff_base_str).context("deserializing diff base")
1222        }
1223    }
1224}
1225
1226pub struct ProjectDiffToolbar {
1227    project_diff: Option<WeakEntity<ProjectDiff>>,
1228    workspace: WeakEntity<Workspace>,
1229}
1230
1231impl ProjectDiffToolbar {
1232    pub fn new(workspace: &Workspace, _: &mut Context<Self>) -> Self {
1233        Self {
1234            project_diff: None,
1235            workspace: workspace.weak_handle(),
1236        }
1237    }
1238
1239    fn project_diff(&self, _: &App) -> Option<Entity<ProjectDiff>> {
1240        self.project_diff.as_ref()?.upgrade()
1241    }
1242
1243    fn dispatch_action(&self, action: &dyn Action, window: &mut Window, cx: &mut Context<Self>) {
1244        if let Some(project_diff) = self.project_diff(cx) {
1245            project_diff.focus_handle(cx).focus(window, cx);
1246        }
1247        let action = action.boxed_clone();
1248        cx.defer(move |cx| {
1249            cx.dispatch_action(action.as_ref());
1250        })
1251    }
1252
1253    fn stage_all(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1254        self.workspace
1255            .update(cx, |workspace, cx| {
1256                if let Some(panel) = workspace.panel::<GitPanel>(cx) {
1257                    panel.update(cx, |panel, cx| {
1258                        panel.stage_all(&Default::default(), window, cx);
1259                    });
1260                }
1261            })
1262            .ok();
1263    }
1264
1265    fn unstage_all(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1266        self.workspace
1267            .update(cx, |workspace, cx| {
1268                let Some(panel) = workspace.panel::<GitPanel>(cx) else {
1269                    return;
1270                };
1271                panel.update(cx, |panel, cx| {
1272                    panel.unstage_all(&Default::default(), window, cx);
1273                });
1274            })
1275            .ok();
1276    }
1277}
1278
1279impl EventEmitter<ToolbarItemEvent> for ProjectDiffToolbar {}
1280
1281impl ToolbarItemView for ProjectDiffToolbar {
1282    fn set_active_pane_item(
1283        &mut self,
1284        active_pane_item: Option<&dyn ItemHandle>,
1285        _: &mut Window,
1286        cx: &mut Context<Self>,
1287    ) -> ToolbarItemLocation {
1288        self.project_diff = active_pane_item
1289            .and_then(|item| item.act_as::<ProjectDiff>(cx))
1290            .filter(|item| item.read(cx).diff_base(cx) == &DiffBase::Head)
1291            .map(|entity| entity.downgrade());
1292        if self.project_diff.is_some() {
1293            ToolbarItemLocation::PrimaryRight
1294        } else {
1295            ToolbarItemLocation::Hidden
1296        }
1297    }
1298
1299    fn pane_focus_update(
1300        &mut self,
1301        _pane_focused: bool,
1302        _window: &mut Window,
1303        _cx: &mut Context<Self>,
1304    ) {
1305    }
1306}
1307
1308struct ButtonStates {
1309    stage: bool,
1310    unstage: bool,
1311    prev_next: bool,
1312    selection: bool,
1313    stage_all: bool,
1314    unstage_all: bool,
1315}
1316
1317impl Render for ProjectDiffToolbar {
1318    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1319        let Some(project_diff) = self.project_diff(cx) else {
1320            return div();
1321        };
1322        let focus_handle = project_diff.focus_handle(cx);
1323        let button_states = project_diff.read(cx).button_states(cx);
1324        let review_count = project_diff.read(cx).total_review_comment_count();
1325
1326        h_group_xl()
1327            .my_neg_1()
1328            .py_1()
1329            .items_center()
1330            .flex_wrap()
1331            .justify_between()
1332            .child(
1333                h_group_sm()
1334                    .when(button_states.selection, |el| {
1335                        el.child(
1336                            Button::new("stage", "Toggle Staged")
1337                                .tooltip(Tooltip::for_action_title_in(
1338                                    "Toggle Staged",
1339                                    &ToggleStaged,
1340                                    &focus_handle,
1341                                ))
1342                                .disabled(!button_states.stage && !button_states.unstage)
1343                                .on_click(cx.listener(|this, _, window, cx| {
1344                                    this.dispatch_action(&ToggleStaged, window, cx)
1345                                })),
1346                        )
1347                    })
1348                    .when(!button_states.selection, |el| {
1349                        el.child(
1350                            Button::new("stage", "Stage")
1351                                .tooltip(Tooltip::for_action_title_in(
1352                                    "Stage and go to next hunk",
1353                                    &StageAndNext,
1354                                    &focus_handle,
1355                                ))
1356                                .disabled(
1357                                    !button_states.prev_next
1358                                        && !button_states.stage_all
1359                                        && !button_states.unstage_all,
1360                                )
1361                                .on_click(cx.listener(|this, _, window, cx| {
1362                                    this.dispatch_action(&StageAndNext, window, cx)
1363                                })),
1364                        )
1365                        .child(
1366                            Button::new("unstage", "Unstage")
1367                                .tooltip(Tooltip::for_action_title_in(
1368                                    "Unstage and go to next hunk",
1369                                    &UnstageAndNext,
1370                                    &focus_handle,
1371                                ))
1372                                .disabled(
1373                                    !button_states.prev_next
1374                                        && !button_states.stage_all
1375                                        && !button_states.unstage_all,
1376                                )
1377                                .on_click(cx.listener(|this, _, window, cx| {
1378                                    this.dispatch_action(&UnstageAndNext, window, cx)
1379                                })),
1380                        )
1381                    }),
1382            )
1383            // n.b. the only reason these arrows are here is because we don't
1384            // support "undo" for staging so we need a way to go back.
1385            .child(
1386                h_group_sm()
1387                    .child(
1388                        IconButton::new("up", IconName::ArrowUp)
1389                            .shape(ui::IconButtonShape::Square)
1390                            .tooltip(Tooltip::for_action_title_in(
1391                                "Go to previous hunk",
1392                                &GoToPreviousHunk,
1393                                &focus_handle,
1394                            ))
1395                            .disabled(!button_states.prev_next)
1396                            .on_click(cx.listener(|this, _, window, cx| {
1397                                this.dispatch_action(&GoToPreviousHunk, window, cx)
1398                            })),
1399                    )
1400                    .child(
1401                        IconButton::new("down", IconName::ArrowDown)
1402                            .shape(ui::IconButtonShape::Square)
1403                            .tooltip(Tooltip::for_action_title_in(
1404                                "Go to next hunk",
1405                                &GoToHunk,
1406                                &focus_handle,
1407                            ))
1408                            .disabled(!button_states.prev_next)
1409                            .on_click(cx.listener(|this, _, window, cx| {
1410                                this.dispatch_action(&GoToHunk, window, cx)
1411                            })),
1412                    ),
1413            )
1414            .child(vertical_divider())
1415            .child(
1416                h_group_sm()
1417                    .when(
1418                        button_states.unstage_all && !button_states.stage_all,
1419                        |el| {
1420                            el.child(
1421                                Button::new("unstage-all", "Unstage All")
1422                                    .tooltip(Tooltip::for_action_title_in(
1423                                        "Unstage all changes",
1424                                        &UnstageAll,
1425                                        &focus_handle,
1426                                    ))
1427                                    .on_click(cx.listener(|this, _, window, cx| {
1428                                        this.unstage_all(window, cx)
1429                                    })),
1430                            )
1431                        },
1432                    )
1433                    .when(
1434                        !button_states.unstage_all || button_states.stage_all,
1435                        |el| {
1436                            el.child(
1437                                // todo make it so that changing to say "Unstaged"
1438                                // doesn't change the position.
1439                                div().child(
1440                                    Button::new("stage-all", "Stage All")
1441                                        .disabled(!button_states.stage_all)
1442                                        .tooltip(Tooltip::for_action_title_in(
1443                                            "Stage all changes",
1444                                            &StageAll,
1445                                            &focus_handle,
1446                                        ))
1447                                        .on_click(cx.listener(|this, _, window, cx| {
1448                                            this.stage_all(window, cx)
1449                                        })),
1450                                ),
1451                            )
1452                        },
1453                    )
1454                    .child(
1455                        Button::new("commit", "Commit")
1456                            .tooltip(Tooltip::for_action_title_in(
1457                                "Commit",
1458                                &Commit,
1459                                &focus_handle,
1460                            ))
1461                            .on_click(cx.listener(|this, _, window, cx| {
1462                                this.dispatch_action(&Commit, window, cx);
1463                            })),
1464                    ),
1465            )
1466            // "Send Review to Agent" button (only shown when there are review comments)
1467            .when(review_count > 0, |el| {
1468                el.child(vertical_divider()).child(
1469                    render_send_review_to_agent_button(review_count, &focus_handle).on_click(
1470                        cx.listener(|this, _, window, cx| {
1471                            this.dispatch_action(&SendReviewToAgent, window, cx)
1472                        }),
1473                    ),
1474                )
1475            })
1476    }
1477}
1478
1479fn render_send_review_to_agent_button(review_count: usize, focus_handle: &FocusHandle) -> Button {
1480    Button::new(
1481        "send-review",
1482        format!("Send Review to Agent ({})", review_count),
1483    )
1484    .icon(IconName::ZedAssistant)
1485    .icon_position(IconPosition::Start)
1486    .tooltip(Tooltip::for_action_title_in(
1487        "Send all review comments to the Agent panel",
1488        &SendReviewToAgent,
1489        focus_handle,
1490    ))
1491}
1492
1493pub struct BranchDiffToolbar {
1494    project_diff: Option<WeakEntity<ProjectDiff>>,
1495}
1496
1497impl BranchDiffToolbar {
1498    pub fn new(_: &mut Context<Self>) -> Self {
1499        Self { project_diff: None }
1500    }
1501
1502    fn project_diff(&self, _: &App) -> Option<Entity<ProjectDiff>> {
1503        self.project_diff.as_ref()?.upgrade()
1504    }
1505
1506    fn dispatch_action(&self, action: &dyn Action, window: &mut Window, cx: &mut Context<Self>) {
1507        if let Some(project_diff) = self.project_diff(cx) {
1508            project_diff.focus_handle(cx).focus(window, cx);
1509        }
1510        let action = action.boxed_clone();
1511        cx.defer(move |cx| {
1512            cx.dispatch_action(action.as_ref());
1513        })
1514    }
1515}
1516
1517impl EventEmitter<ToolbarItemEvent> for BranchDiffToolbar {}
1518
1519impl ToolbarItemView for BranchDiffToolbar {
1520    fn set_active_pane_item(
1521        &mut self,
1522        active_pane_item: Option<&dyn ItemHandle>,
1523        _: &mut Window,
1524        cx: &mut Context<Self>,
1525    ) -> ToolbarItemLocation {
1526        self.project_diff = active_pane_item
1527            .and_then(|item| item.act_as::<ProjectDiff>(cx))
1528            .filter(|item| matches!(item.read(cx).diff_base(cx), DiffBase::Merge { .. }))
1529            .map(|entity| entity.downgrade());
1530        if self.project_diff.is_some() {
1531            ToolbarItemLocation::PrimaryRight
1532        } else {
1533            ToolbarItemLocation::Hidden
1534        }
1535    }
1536
1537    fn pane_focus_update(
1538        &mut self,
1539        _pane_focused: bool,
1540        _window: &mut Window,
1541        _cx: &mut Context<Self>,
1542    ) {
1543    }
1544}
1545
1546impl Render for BranchDiffToolbar {
1547    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
1548        let Some(project_diff) = self.project_diff(cx) else {
1549            return div();
1550        };
1551        let focus_handle = project_diff.focus_handle(cx);
1552        let review_count = project_diff.read(cx).total_review_comment_count();
1553
1554        h_group_xl()
1555            .my_neg_1()
1556            .py_1()
1557            .items_center()
1558            .flex_wrap()
1559            .justify_end()
1560            .when(review_count > 0, |el| {
1561                el.child(
1562                    render_send_review_to_agent_button(review_count, &focus_handle).on_click(
1563                        cx.listener(|this, _, window, cx| {
1564                            this.dispatch_action(&SendReviewToAgent, window, cx)
1565                        }),
1566                    ),
1567                )
1568            })
1569    }
1570}
1571
1572#[derive(IntoElement, RegisterComponent)]
1573pub struct ProjectDiffEmptyState {
1574    pub no_repo: bool,
1575    pub can_push_and_pull: bool,
1576    pub focus_handle: Option<FocusHandle>,
1577    pub current_branch: Option<Branch>,
1578    // has_pending_commits: bool,
1579    // ahead_of_remote: bool,
1580    // no_git_repository: bool,
1581}
1582
1583impl RenderOnce for ProjectDiffEmptyState {
1584    fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
1585        let status_against_remote = |ahead_by: usize, behind_by: usize| -> bool {
1586            matches!(self.current_branch, Some(Branch {
1587                    upstream:
1588                        Some(Upstream {
1589                            tracking:
1590                                UpstreamTracking::Tracked(UpstreamTrackingStatus {
1591                                    ahead, behind, ..
1592                                }),
1593                            ..
1594                        }),
1595                    ..
1596                }) if (ahead > 0) == (ahead_by > 0) && (behind > 0) == (behind_by > 0))
1597        };
1598
1599        let change_count = |current_branch: &Branch| -> (usize, usize) {
1600            match current_branch {
1601                Branch {
1602                    upstream:
1603                        Some(Upstream {
1604                            tracking:
1605                                UpstreamTracking::Tracked(UpstreamTrackingStatus {
1606                                    ahead, behind, ..
1607                                }),
1608                            ..
1609                        }),
1610                    ..
1611                } => (*ahead as usize, *behind as usize),
1612                _ => (0, 0),
1613            }
1614        };
1615
1616        let not_ahead_or_behind = status_against_remote(0, 0);
1617        let ahead_of_remote = status_against_remote(1, 0);
1618        let branch_not_on_remote = if let Some(branch) = self.current_branch.as_ref() {
1619            branch.upstream.is_none()
1620        } else {
1621            false
1622        };
1623
1624        let has_branch_container = |branch: &Branch| {
1625            h_flex()
1626                .max_w(px(420.))
1627                .bg(cx.theme().colors().text.opacity(0.05))
1628                .border_1()
1629                .border_color(cx.theme().colors().border)
1630                .rounded_sm()
1631                .gap_8()
1632                .px_6()
1633                .py_4()
1634                .map(|this| {
1635                    if ahead_of_remote {
1636                        let ahead_count = change_count(branch).0;
1637                        let ahead_string = format!("{} Commits Ahead", ahead_count);
1638                        this.child(
1639                            v_flex()
1640                                .child(Headline::new(ahead_string).size(HeadlineSize::Small))
1641                                .child(
1642                                    Label::new(format!("Push your changes to {}", branch.name()))
1643                                        .color(Color::Muted),
1644                                ),
1645                        )
1646                        .child(div().child(render_push_button(
1647                            self.focus_handle,
1648                            "push".into(),
1649                            ahead_count as u32,
1650                        )))
1651                    } else if branch_not_on_remote {
1652                        this.child(
1653                            v_flex()
1654                                .child(Headline::new("Publish Branch").size(HeadlineSize::Small))
1655                                .child(
1656                                    Label::new(format!("Create {} on remote", branch.name()))
1657                                        .color(Color::Muted),
1658                                ),
1659                        )
1660                        .child(
1661                            div().child(render_publish_button(self.focus_handle, "publish".into())),
1662                        )
1663                    } else {
1664                        this.child(Label::new("Remote status unknown").color(Color::Muted))
1665                    }
1666                })
1667        };
1668
1669        v_flex().size_full().items_center().justify_center().child(
1670            v_flex()
1671                .gap_1()
1672                .when(self.no_repo, |this| {
1673                    // TODO: add git init
1674                    this.text_center()
1675                        .child(Label::new("No Repository").color(Color::Muted))
1676                })
1677                .map(|this| {
1678                    if not_ahead_or_behind && self.current_branch.is_some() {
1679                        this.text_center()
1680                            .child(Label::new("No Changes").color(Color::Muted))
1681                    } else {
1682                        this.when_some(self.current_branch.as_ref(), |this, branch| {
1683                            this.child(has_branch_container(branch))
1684                        })
1685                    }
1686                }),
1687        )
1688    }
1689}
1690
1691mod preview {
1692    use git::repository::{
1693        Branch, CommitSummary, Upstream, UpstreamTracking, UpstreamTrackingStatus,
1694    };
1695    use ui::prelude::*;
1696
1697    use super::ProjectDiffEmptyState;
1698
1699    // View this component preview using `workspace: open component-preview`
1700    impl Component for ProjectDiffEmptyState {
1701        fn scope() -> ComponentScope {
1702            ComponentScope::VersionControl
1703        }
1704
1705        fn preview(_window: &mut Window, _cx: &mut App) -> Option<AnyElement> {
1706            let unknown_upstream: Option<UpstreamTracking> = None;
1707            let ahead_of_upstream: Option<UpstreamTracking> = Some(
1708                UpstreamTrackingStatus {
1709                    ahead: 2,
1710                    behind: 0,
1711                }
1712                .into(),
1713            );
1714
1715            let not_ahead_or_behind_upstream: Option<UpstreamTracking> = Some(
1716                UpstreamTrackingStatus {
1717                    ahead: 0,
1718                    behind: 0,
1719                }
1720                .into(),
1721            );
1722
1723            fn branch(upstream: Option<UpstreamTracking>) -> Branch {
1724                Branch {
1725                    is_head: true,
1726                    ref_name: "some-branch".into(),
1727                    upstream: upstream.map(|tracking| Upstream {
1728                        ref_name: "origin/some-branch".into(),
1729                        tracking,
1730                    }),
1731                    most_recent_commit: Some(CommitSummary {
1732                        sha: "abc123".into(),
1733                        subject: "Modify stuff".into(),
1734                        commit_timestamp: 1710932954,
1735                        author_name: "John Doe".into(),
1736                        has_parent: true,
1737                    }),
1738                }
1739            }
1740
1741            let no_repo_state = ProjectDiffEmptyState {
1742                no_repo: true,
1743                can_push_and_pull: false,
1744                focus_handle: None,
1745                current_branch: None,
1746            };
1747
1748            let no_changes_state = ProjectDiffEmptyState {
1749                no_repo: false,
1750                can_push_and_pull: true,
1751                focus_handle: None,
1752                current_branch: Some(branch(not_ahead_or_behind_upstream)),
1753            };
1754
1755            let ahead_of_upstream_state = ProjectDiffEmptyState {
1756                no_repo: false,
1757                can_push_and_pull: true,
1758                focus_handle: None,
1759                current_branch: Some(branch(ahead_of_upstream)),
1760            };
1761
1762            let unknown_upstream_state = ProjectDiffEmptyState {
1763                no_repo: false,
1764                can_push_and_pull: true,
1765                focus_handle: None,
1766                current_branch: Some(branch(unknown_upstream)),
1767            };
1768
1769            let (width, height) = (px(480.), px(320.));
1770
1771            Some(
1772                v_flex()
1773                    .gap_6()
1774                    .children(vec![
1775                        example_group(vec![
1776                            single_example(
1777                                "No Repo",
1778                                div()
1779                                    .w(width)
1780                                    .h(height)
1781                                    .child(no_repo_state)
1782                                    .into_any_element(),
1783                            ),
1784                            single_example(
1785                                "No Changes",
1786                                div()
1787                                    .w(width)
1788                                    .h(height)
1789                                    .child(no_changes_state)
1790                                    .into_any_element(),
1791                            ),
1792                            single_example(
1793                                "Unknown Upstream",
1794                                div()
1795                                    .w(width)
1796                                    .h(height)
1797                                    .child(unknown_upstream_state)
1798                                    .into_any_element(),
1799                            ),
1800                            single_example(
1801                                "Ahead of Remote",
1802                                div()
1803                                    .w(width)
1804                                    .h(height)
1805                                    .child(ahead_of_upstream_state)
1806                                    .into_any_element(),
1807                            ),
1808                        ])
1809                        .vertical(),
1810                    ])
1811                    .into_any_element(),
1812            )
1813        }
1814    }
1815}
1816
1817struct BranchDiffAddon {
1818    branch_diff: Entity<branch_diff::BranchDiff>,
1819}
1820
1821impl Addon for BranchDiffAddon {
1822    fn to_any(&self) -> &dyn std::any::Any {
1823        self
1824    }
1825
1826    fn override_status_for_buffer_id(
1827        &self,
1828        buffer_id: language::BufferId,
1829        cx: &App,
1830    ) -> Option<FileStatus> {
1831        self.branch_diff
1832            .read(cx)
1833            .status_for_buffer_id(buffer_id, cx)
1834    }
1835}
1836
1837#[cfg(test)]
1838mod tests {
1839    use collections::HashMap;
1840    use db::indoc;
1841    use editor::test::editor_test_context::{EditorTestContext, assert_state_with_diff};
1842    use git::status::{TrackedStatus, UnmergedStatus, UnmergedStatusCode};
1843    use gpui::TestAppContext;
1844    use project::FakeFs;
1845    use serde_json::json;
1846    use settings::SettingsStore;
1847    use std::path::Path;
1848    use unindent::Unindent as _;
1849    use util::{
1850        path,
1851        rel_path::{RelPath, rel_path},
1852    };
1853
1854    use super::*;
1855
1856    #[ctor::ctor]
1857    fn init_logger() {
1858        zlog::init_test();
1859    }
1860
1861    fn init_test(cx: &mut TestAppContext) {
1862        cx.update(|cx| {
1863            let store = SettingsStore::test(cx);
1864            cx.set_global(store);
1865            theme::init(theme::LoadThemes::JustBase, cx);
1866            editor::init(cx);
1867            crate::init(cx);
1868        });
1869    }
1870
1871    #[gpui::test]
1872    async fn test_save_after_restore(cx: &mut TestAppContext) {
1873        init_test(cx);
1874
1875        let fs = FakeFs::new(cx.executor());
1876        fs.insert_tree(
1877            path!("/project"),
1878            json!({
1879                ".git": {},
1880                "foo.txt": "FOO\n",
1881            }),
1882        )
1883        .await;
1884        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1885
1886        fs.set_head_for_repo(
1887            path!("/project/.git").as_ref(),
1888            &[("foo.txt", "foo\n".into())],
1889            "deadbeef",
1890        );
1891        fs.set_index_for_repo(
1892            path!("/project/.git").as_ref(),
1893            &[("foo.txt", "foo\n".into())],
1894        );
1895
1896        let (workspace, cx) =
1897            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1898        let diff = cx.new_window_entity(|window, cx| {
1899            ProjectDiff::new(project.clone(), workspace, window, cx)
1900        });
1901        cx.run_until_parked();
1902
1903        let editor = diff.read_with(cx, |diff, cx| diff.editor.read(cx).rhs_editor().clone());
1904        assert_state_with_diff(
1905            &editor,
1906            cx,
1907            &"
1908                - ˇfoo
1909                + FOO
1910            "
1911            .unindent(),
1912        );
1913
1914        editor
1915            .update_in(cx, |editor, window, cx| {
1916                editor.git_restore(&Default::default(), window, cx);
1917                editor.save(SaveOptions::default(), project.clone(), window, cx)
1918            })
1919            .await
1920            .unwrap();
1921        cx.run_until_parked();
1922
1923        assert_state_with_diff(&editor, cx, &"ˇ".unindent());
1924
1925        let text = String::from_utf8(fs.read_file_sync("/project/foo.txt").unwrap()).unwrap();
1926        assert_eq!(text, "foo\n");
1927    }
1928
1929    #[gpui::test]
1930    async fn test_scroll_to_beginning_with_deletion(cx: &mut TestAppContext) {
1931        init_test(cx);
1932
1933        let fs = FakeFs::new(cx.executor());
1934        fs.insert_tree(
1935            path!("/project"),
1936            json!({
1937                ".git": {},
1938                "bar": "BAR\n",
1939                "foo": "FOO\n",
1940            }),
1941        )
1942        .await;
1943        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1944        let (workspace, cx) =
1945            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1946        let diff = cx.new_window_entity(|window, cx| {
1947            ProjectDiff::new(project.clone(), workspace, window, cx)
1948        });
1949        cx.run_until_parked();
1950
1951        fs.set_head_and_index_for_repo(
1952            path!("/project/.git").as_ref(),
1953            &[("bar", "bar\n".into()), ("foo", "foo\n".into())],
1954        );
1955        cx.run_until_parked();
1956
1957        let editor = cx.update_window_entity(&diff, |diff, window, cx| {
1958            diff.move_to_path(
1959                PathKey::with_sort_prefix(TRACKED_SORT_PREFIX, rel_path("foo").into_arc()),
1960                window,
1961                cx,
1962            );
1963            diff.editor.read(cx).rhs_editor().clone()
1964        });
1965        assert_state_with_diff(
1966            &editor,
1967            cx,
1968            &"
1969                - bar
1970                + BAR
1971
1972                - ˇfoo
1973                + FOO
1974            "
1975            .unindent(),
1976        );
1977
1978        let editor = cx.update_window_entity(&diff, |diff, window, cx| {
1979            diff.move_to_path(
1980                PathKey::with_sort_prefix(TRACKED_SORT_PREFIX, rel_path("bar").into_arc()),
1981                window,
1982                cx,
1983            );
1984            diff.editor.read(cx).rhs_editor().clone()
1985        });
1986        assert_state_with_diff(
1987            &editor,
1988            cx,
1989            &"
1990                - ˇbar
1991                + BAR
1992
1993                - foo
1994                + FOO
1995            "
1996            .unindent(),
1997        );
1998    }
1999
2000    #[gpui::test]
2001    async fn test_hunks_after_restore_then_modify(cx: &mut TestAppContext) {
2002        init_test(cx);
2003
2004        let fs = FakeFs::new(cx.executor());
2005        fs.insert_tree(
2006            path!("/project"),
2007            json!({
2008                ".git": {},
2009                "foo": "modified\n",
2010            }),
2011        )
2012        .await;
2013        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
2014        let (workspace, cx) =
2015            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2016        fs.set_head_for_repo(
2017            path!("/project/.git").as_ref(),
2018            &[("foo", "original\n".into())],
2019            "deadbeef",
2020        );
2021
2022        let buffer = project
2023            .update(cx, |project, cx| {
2024                project.open_local_buffer(path!("/project/foo"), cx)
2025            })
2026            .await
2027            .unwrap();
2028        let buffer_editor = cx.new_window_entity(|window, cx| {
2029            Editor::for_buffer(buffer, Some(project.clone()), window, cx)
2030        });
2031        let diff = cx.new_window_entity(|window, cx| {
2032            ProjectDiff::new(project.clone(), workspace, window, cx)
2033        });
2034        cx.run_until_parked();
2035
2036        let diff_editor = diff.read_with(cx, |diff, cx| diff.editor.read(cx).rhs_editor().clone());
2037
2038        assert_state_with_diff(
2039            &diff_editor,
2040            cx,
2041            &"
2042                - ˇoriginal
2043                + modified
2044            "
2045            .unindent(),
2046        );
2047
2048        let prev_buffer_hunks =
2049            cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2050                let snapshot = buffer_editor.snapshot(window, cx);
2051                let snapshot = &snapshot.buffer_snapshot();
2052                let prev_buffer_hunks = buffer_editor
2053                    .diff_hunks_in_ranges(&[editor::Anchor::min()..editor::Anchor::max()], snapshot)
2054                    .collect::<Vec<_>>();
2055                buffer_editor.git_restore(&Default::default(), window, cx);
2056                prev_buffer_hunks
2057            });
2058        assert_eq!(prev_buffer_hunks.len(), 1);
2059        cx.run_until_parked();
2060
2061        let new_buffer_hunks =
2062            cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2063                let snapshot = buffer_editor.snapshot(window, cx);
2064                let snapshot = &snapshot.buffer_snapshot();
2065                buffer_editor
2066                    .diff_hunks_in_ranges(&[editor::Anchor::min()..editor::Anchor::max()], snapshot)
2067                    .collect::<Vec<_>>()
2068            });
2069        assert_eq!(new_buffer_hunks.as_slice(), &[]);
2070
2071        cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2072            buffer_editor.set_text("different\n", window, cx);
2073            buffer_editor.save(
2074                SaveOptions {
2075                    format: false,
2076                    autosave: false,
2077                },
2078                project.clone(),
2079                window,
2080                cx,
2081            )
2082        })
2083        .await
2084        .unwrap();
2085
2086        cx.run_until_parked();
2087
2088        cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
2089            buffer_editor.expand_all_diff_hunks(&Default::default(), window, cx);
2090        });
2091
2092        assert_state_with_diff(
2093            &buffer_editor,
2094            cx,
2095            &"
2096                - original
2097                + different
2098                  ˇ"
2099            .unindent(),
2100        );
2101
2102        assert_state_with_diff(
2103            &diff_editor,
2104            cx,
2105            &"
2106                - ˇoriginal
2107                + different
2108            "
2109            .unindent(),
2110        );
2111    }
2112
2113    use crate::{
2114        conflict_view::resolve_conflict,
2115        project_diff::{self, ProjectDiff},
2116    };
2117
2118    #[gpui::test]
2119    async fn test_go_to_prev_hunk_multibuffer(cx: &mut TestAppContext) {
2120        init_test(cx);
2121
2122        let fs = FakeFs::new(cx.executor());
2123        fs.insert_tree(
2124            path!("/a"),
2125            json!({
2126                ".git": {},
2127                "a.txt": "created\n",
2128                "b.txt": "really changed\n",
2129                "c.txt": "unchanged\n"
2130            }),
2131        )
2132        .await;
2133
2134        fs.set_head_and_index_for_repo(
2135            Path::new(path!("/a/.git")),
2136            &[
2137                ("b.txt", "before\n".to_string()),
2138                ("c.txt", "unchanged\n".to_string()),
2139                ("d.txt", "deleted\n".to_string()),
2140            ],
2141        );
2142
2143        let project = Project::test(fs, [Path::new(path!("/a"))], cx).await;
2144        let (workspace, cx) =
2145            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
2146
2147        cx.run_until_parked();
2148
2149        cx.focus(&workspace);
2150        cx.update(|window, cx| {
2151            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2152        });
2153
2154        cx.run_until_parked();
2155
2156        let item = workspace.update(cx, |workspace, cx| {
2157            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2158        });
2159        cx.focus(&item);
2160        let editor = item.read_with(cx, |item, cx| item.editor.read(cx).rhs_editor().clone());
2161
2162        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
2163
2164        cx.assert_excerpts_with_selections(indoc!(
2165            "
2166            [EXCERPT]
2167            before
2168            really changed
2169            [EXCERPT]
2170            [FOLDED]
2171            [EXCERPT]
2172            ˇcreated
2173        "
2174        ));
2175
2176        cx.dispatch_action(editor::actions::GoToPreviousHunk);
2177
2178        cx.assert_excerpts_with_selections(indoc!(
2179            "
2180            [EXCERPT]
2181            before
2182            really changed
2183            [EXCERPT]
2184            ˇ[FOLDED]
2185            [EXCERPT]
2186            created
2187        "
2188        ));
2189
2190        cx.dispatch_action(editor::actions::GoToPreviousHunk);
2191
2192        cx.assert_excerpts_with_selections(indoc!(
2193            "
2194            [EXCERPT]
2195            ˇbefore
2196            really changed
2197            [EXCERPT]
2198            [FOLDED]
2199            [EXCERPT]
2200            created
2201        "
2202        ));
2203    }
2204
2205    #[gpui::test]
2206    async fn test_excerpts_splitting_after_restoring_the_middle_excerpt(cx: &mut TestAppContext) {
2207        init_test(cx);
2208
2209        let git_contents = indoc! {r#"
2210            #[rustfmt::skip]
2211            fn main() {
2212                let x = 0.0; // this line will be removed
2213                // 1
2214                // 2
2215                // 3
2216                let y = 0.0; // this line will be removed
2217                // 1
2218                // 2
2219                // 3
2220                let arr = [
2221                    0.0, // this line will be removed
2222                    0.0, // this line will be removed
2223                    0.0, // this line will be removed
2224                    0.0, // this line will be removed
2225                ];
2226            }
2227        "#};
2228        let buffer_contents = indoc! {"
2229            #[rustfmt::skip]
2230            fn main() {
2231                // 1
2232                // 2
2233                // 3
2234                // 1
2235                // 2
2236                // 3
2237                let arr = [
2238                ];
2239            }
2240        "};
2241
2242        let fs = FakeFs::new(cx.executor());
2243        fs.insert_tree(
2244            path!("/a"),
2245            json!({
2246                ".git": {},
2247                "main.rs": buffer_contents,
2248            }),
2249        )
2250        .await;
2251
2252        fs.set_head_and_index_for_repo(
2253            Path::new(path!("/a/.git")),
2254            &[("main.rs", git_contents.to_owned())],
2255        );
2256
2257        let project = Project::test(fs, [Path::new(path!("/a"))], cx).await;
2258        let (workspace, cx) =
2259            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
2260
2261        cx.run_until_parked();
2262
2263        cx.focus(&workspace);
2264        cx.update(|window, cx| {
2265            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2266        });
2267
2268        cx.run_until_parked();
2269
2270        let item = workspace.update(cx, |workspace, cx| {
2271            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2272        });
2273        cx.focus(&item);
2274        let editor = item.read_with(cx, |item, cx| item.editor.read(cx).rhs_editor().clone());
2275
2276        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
2277
2278        cx.assert_excerpts_with_selections(&format!("[EXCERPT]\nˇ{git_contents}"));
2279
2280        cx.dispatch_action(editor::actions::GoToHunk);
2281        cx.dispatch_action(editor::actions::GoToHunk);
2282        cx.dispatch_action(git::Restore);
2283        cx.dispatch_action(editor::actions::MoveToBeginning);
2284
2285        cx.assert_excerpts_with_selections(&format!("[EXCERPT]\nˇ{git_contents}"));
2286    }
2287
2288    #[gpui::test]
2289    async fn test_saving_resolved_conflicts(cx: &mut TestAppContext) {
2290        init_test(cx);
2291
2292        let fs = FakeFs::new(cx.executor());
2293        fs.insert_tree(
2294            path!("/project"),
2295            json!({
2296                ".git": {},
2297                "foo": "<<<<<<< x\nours\n=======\ntheirs\n>>>>>>> y\n",
2298            }),
2299        )
2300        .await;
2301        fs.set_status_for_repo(
2302            Path::new(path!("/project/.git")),
2303            &[(
2304                "foo",
2305                UnmergedStatus {
2306                    first_head: UnmergedStatusCode::Updated,
2307                    second_head: UnmergedStatusCode::Updated,
2308                }
2309                .into(),
2310            )],
2311        );
2312        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
2313        let (workspace, cx) =
2314            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2315        let diff = cx.new_window_entity(|window, cx| {
2316            ProjectDiff::new(project.clone(), workspace, window, cx)
2317        });
2318        cx.run_until_parked();
2319
2320        cx.update(|window, cx| {
2321            let editor = diff.read(cx).editor.read(cx).rhs_editor().clone();
2322            let excerpt_ids = editor.read(cx).buffer().read(cx).excerpt_ids();
2323            assert_eq!(excerpt_ids.len(), 1);
2324            let excerpt_id = excerpt_ids[0];
2325            let buffer = editor
2326                .read(cx)
2327                .buffer()
2328                .read(cx)
2329                .all_buffers()
2330                .into_iter()
2331                .next()
2332                .unwrap();
2333            let buffer_id = buffer.read(cx).remote_id();
2334            let conflict_set = diff
2335                .read(cx)
2336                .editor
2337                .read(cx)
2338                .rhs_editor()
2339                .read(cx)
2340                .addon::<ConflictAddon>()
2341                .unwrap()
2342                .conflict_set(buffer_id)
2343                .unwrap();
2344            assert!(conflict_set.read(cx).has_conflict);
2345            let snapshot = conflict_set.read(cx).snapshot();
2346            assert_eq!(snapshot.conflicts.len(), 1);
2347
2348            let ours_range = snapshot.conflicts[0].ours.clone();
2349
2350            resolve_conflict(
2351                editor.downgrade(),
2352                excerpt_id,
2353                snapshot.conflicts[0].clone(),
2354                vec![ours_range],
2355                window,
2356                cx,
2357            )
2358        })
2359        .await;
2360
2361        let contents = fs.read_file_sync(path!("/project/foo")).unwrap();
2362        let contents = String::from_utf8(contents).unwrap();
2363        assert_eq!(contents, "ours\n");
2364    }
2365
2366    #[gpui::test]
2367    async fn test_new_hunk_in_modified_file(cx: &mut TestAppContext) {
2368        init_test(cx);
2369
2370        let fs = FakeFs::new(cx.executor());
2371        fs.insert_tree(
2372            path!("/project"),
2373            json!({
2374                ".git": {},
2375                "foo.txt": "
2376                    one
2377                    two
2378                    three
2379                    four
2380                    five
2381                    six
2382                    seven
2383                    eight
2384                    nine
2385                    ten
2386                    ELEVEN
2387                    twelve
2388                ".unindent()
2389            }),
2390        )
2391        .await;
2392        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
2393        let (workspace, cx) =
2394            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2395        let diff = cx.new_window_entity(|window, cx| {
2396            ProjectDiff::new(project.clone(), workspace, window, cx)
2397        });
2398        cx.run_until_parked();
2399
2400        fs.set_head_and_index_for_repo(
2401            Path::new(path!("/project/.git")),
2402            &[(
2403                "foo.txt",
2404                "
2405                    one
2406                    two
2407                    three
2408                    four
2409                    five
2410                    six
2411                    seven
2412                    eight
2413                    nine
2414                    ten
2415                    eleven
2416                    twelve
2417                "
2418                .unindent(),
2419            )],
2420        );
2421        cx.run_until_parked();
2422
2423        let editor = diff.read_with(cx, |diff, cx| diff.editor.read(cx).rhs_editor().clone());
2424
2425        assert_state_with_diff(
2426            &editor,
2427            cx,
2428            &"
2429                  ˇnine
2430                  ten
2431                - eleven
2432                + ELEVEN
2433                  twelve
2434            "
2435            .unindent(),
2436        );
2437
2438        // The project diff updates its excerpts when a new hunk appears in a buffer that already has a diff.
2439        let buffer = project
2440            .update(cx, |project, cx| {
2441                project.open_local_buffer(path!("/project/foo.txt"), cx)
2442            })
2443            .await
2444            .unwrap();
2445        buffer.update(cx, |buffer, cx| {
2446            buffer.edit_via_marked_text(
2447                &"
2448                    one
2449                    «TWO»
2450                    three
2451                    four
2452                    five
2453                    six
2454                    seven
2455                    eight
2456                    nine
2457                    ten
2458                    ELEVEN
2459                    twelve
2460                "
2461                .unindent(),
2462                None,
2463                cx,
2464            );
2465        });
2466        project
2467            .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
2468            .await
2469            .unwrap();
2470        cx.run_until_parked();
2471
2472        assert_state_with_diff(
2473            &editor,
2474            cx,
2475            &"
2476                  one
2477                - two
2478                + TWO
2479                  three
2480                  four
2481                  five
2482                  ˇnine
2483                  ten
2484                - eleven
2485                + ELEVEN
2486                  twelve
2487            "
2488            .unindent(),
2489        );
2490    }
2491
2492    #[gpui::test]
2493    async fn test_branch_diff(cx: &mut TestAppContext) {
2494        init_test(cx);
2495
2496        let fs = FakeFs::new(cx.executor());
2497        fs.insert_tree(
2498            path!("/project"),
2499            json!({
2500                ".git": {},
2501                "a.txt": "C",
2502                "b.txt": "new",
2503                "c.txt": "in-merge-base-and-work-tree",
2504                "d.txt": "created-in-head",
2505            }),
2506        )
2507        .await;
2508        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
2509        let (workspace, cx) =
2510            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2511        let diff = cx
2512            .update(|window, cx| {
2513                ProjectDiff::new_with_default_branch(project.clone(), workspace, window, cx)
2514            })
2515            .await
2516            .unwrap();
2517        cx.run_until_parked();
2518
2519        fs.set_head_for_repo(
2520            Path::new(path!("/project/.git")),
2521            &[("a.txt", "B".into()), ("d.txt", "created-in-head".into())],
2522            "sha",
2523        );
2524        // fs.set_index_for_repo(dot_git, index_state);
2525        fs.set_merge_base_content_for_repo(
2526            Path::new(path!("/project/.git")),
2527            &[
2528                ("a.txt", "A".into()),
2529                ("c.txt", "in-merge-base-and-work-tree".into()),
2530            ],
2531        );
2532        cx.run_until_parked();
2533
2534        let editor = diff.read_with(cx, |diff, cx| diff.editor.read(cx).rhs_editor().clone());
2535
2536        assert_state_with_diff(
2537            &editor,
2538            cx,
2539            &"
2540                - A
2541                + ˇC
2542                + new
2543                + created-in-head"
2544                .unindent(),
2545        );
2546
2547        let statuses: HashMap<Arc<RelPath>, Option<FileStatus>> =
2548            editor.update(cx, |editor, cx| {
2549                editor
2550                    .buffer()
2551                    .read(cx)
2552                    .all_buffers()
2553                    .iter()
2554                    .map(|buffer| {
2555                        (
2556                            buffer.read(cx).file().unwrap().path().clone(),
2557                            editor.status_for_buffer_id(buffer.read(cx).remote_id(), cx),
2558                        )
2559                    })
2560                    .collect()
2561            });
2562
2563        assert_eq!(
2564            statuses,
2565            HashMap::from_iter([
2566                (
2567                    rel_path("a.txt").into_arc(),
2568                    Some(FileStatus::Tracked(TrackedStatus {
2569                        index_status: git::status::StatusCode::Modified,
2570                        worktree_status: git::status::StatusCode::Modified
2571                    }))
2572                ),
2573                (rel_path("b.txt").into_arc(), Some(FileStatus::Untracked)),
2574                (
2575                    rel_path("d.txt").into_arc(),
2576                    Some(FileStatus::Tracked(TrackedStatus {
2577                        index_status: git::status::StatusCode::Added,
2578                        worktree_status: git::status::StatusCode::Added
2579                    }))
2580                )
2581            ])
2582        );
2583    }
2584
2585    #[gpui::test]
2586    async fn test_update_on_uncommit(cx: &mut TestAppContext) {
2587        init_test(cx);
2588
2589        let fs = FakeFs::new(cx.executor());
2590        fs.insert_tree(
2591            path!("/project"),
2592            json!({
2593                ".git": {},
2594                "README.md": "# My cool project\n".to_owned()
2595            }),
2596        )
2597        .await;
2598        fs.set_head_and_index_for_repo(
2599            Path::new(path!("/project/.git")),
2600            &[("README.md", "# My cool project\n".to_owned())],
2601        );
2602        let project = Project::test(fs.clone(), [Path::new(path!("/project"))], cx).await;
2603        let worktree_id = project.read_with(cx, |project, cx| {
2604            project.worktrees(cx).next().unwrap().read(cx).id()
2605        });
2606        let (workspace, cx) =
2607            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2608        cx.run_until_parked();
2609
2610        let _editor = workspace
2611            .update_in(cx, |workspace, window, cx| {
2612                workspace.open_path((worktree_id, rel_path("README.md")), None, true, window, cx)
2613            })
2614            .await
2615            .unwrap()
2616            .downcast::<Editor>()
2617            .unwrap();
2618
2619        cx.focus(&workspace);
2620        cx.update(|window, cx| {
2621            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2622        });
2623        cx.run_until_parked();
2624        let item = workspace.update(cx, |workspace, cx| {
2625            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2626        });
2627        cx.focus(&item);
2628        let editor = item.read_with(cx, |item, cx| item.editor.read(cx).rhs_editor().clone());
2629
2630        fs.set_head_and_index_for_repo(
2631            Path::new(path!("/project/.git")),
2632            &[(
2633                "README.md",
2634                "# My cool project\nDetails to come.\n".to_owned(),
2635            )],
2636        );
2637        cx.run_until_parked();
2638
2639        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
2640
2641        cx.assert_excerpts_with_selections("[EXCERPT]\nˇ# My cool project\nDetails to come.\n");
2642    }
2643
2644    #[gpui::test]
2645    async fn test_deploy_at_respects_worktree_override(cx: &mut TestAppContext) {
2646        init_test(cx);
2647
2648        let fs = FakeFs::new(cx.executor());
2649        fs.insert_tree(
2650            path!("/project_a"),
2651            json!({
2652                ".git": {},
2653                "a.txt": "CHANGED_A\n",
2654            }),
2655        )
2656        .await;
2657        fs.insert_tree(
2658            path!("/project_b"),
2659            json!({
2660                ".git": {},
2661                "b.txt": "CHANGED_B\n",
2662            }),
2663        )
2664        .await;
2665
2666        fs.set_head_and_index_for_repo(
2667            Path::new(path!("/project_a/.git")),
2668            &[("a.txt", "original_a\n".to_string())],
2669        );
2670        fs.set_head_and_index_for_repo(
2671            Path::new(path!("/project_b/.git")),
2672            &[("b.txt", "original_b\n".to_string())],
2673        );
2674
2675        let project = Project::test(
2676            fs.clone(),
2677            [
2678                Path::new(path!("/project_a")),
2679                Path::new(path!("/project_b")),
2680            ],
2681            cx,
2682        )
2683        .await;
2684
2685        let (worktree_a_id, worktree_b_id) = project.read_with(cx, |project, cx| {
2686            let mut worktrees: Vec<_> = project.worktrees(cx).collect();
2687            worktrees.sort_by_key(|w| w.read(cx).abs_path());
2688            (worktrees[0].read(cx).id(), worktrees[1].read(cx).id())
2689        });
2690
2691        let (workspace, cx) =
2692            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
2693        cx.run_until_parked();
2694
2695        // Select project A via the dropdown override and open the diff.
2696        workspace.update(cx, |workspace, cx| {
2697            workspace.set_active_worktree_override(Some(worktree_a_id), cx);
2698        });
2699        cx.focus(&workspace);
2700        cx.update(|window, cx| {
2701            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2702        });
2703        cx.run_until_parked();
2704
2705        let diff_item = workspace.update(cx, |workspace, cx| {
2706            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2707        });
2708        let paths_a = diff_item.read_with(cx, |diff, cx| diff.excerpt_paths(cx));
2709        assert_eq!(paths_a.len(), 1);
2710        assert_eq!(*paths_a[0], *"a.txt");
2711
2712        // Switch the override to project B and re-run the diff action.
2713        workspace.update(cx, |workspace, cx| {
2714            workspace.set_active_worktree_override(Some(worktree_b_id), cx);
2715        });
2716        cx.focus(&workspace);
2717        cx.update(|window, cx| {
2718            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
2719        });
2720        cx.run_until_parked();
2721
2722        let same_diff_item = workspace.update(cx, |workspace, cx| {
2723            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
2724        });
2725        assert_eq!(diff_item.entity_id(), same_diff_item.entity_id());
2726
2727        let paths_b = diff_item.read_with(cx, |diff, cx| diff.excerpt_paths(cx));
2728        assert_eq!(paths_b.len(), 1);
2729        assert_eq!(*paths_b[0], *"b.txt");
2730    }
2731}