1use crate::{
   2    conflict_view::ConflictAddon,
   3    git_panel::{GitPanel, GitPanelAddon, GitStatusEntry},
   4    git_panel_settings::GitPanelSettings,
   5    remote_button::{render_publish_button, render_push_button},
   6};
   7use anyhow::Result;
   8use buffer_diff::{BufferDiff, DiffHunkSecondaryStatus};
   9use collections::HashSet;
  10use editor::{
  11    Editor, EditorEvent, SelectionEffects,
  12    actions::{GoToHunk, GoToPreviousHunk},
  13    multibuffer_context_lines,
  14    scroll::Autoscroll,
  15};
  16use futures::StreamExt;
  17use git::{
  18    Commit, StageAll, StageAndNext, ToggleStaged, UnstageAll, UnstageAndNext,
  19    repository::{Branch, RepoPath, Upstream, UpstreamTracking, UpstreamTrackingStatus},
  20    status::FileStatus,
  21};
  22use gpui::{
  23    Action, AnyElement, AnyView, App, AppContext as _, AsyncWindowContext, Entity, EventEmitter,
  24    FocusHandle, Focusable, Render, Subscription, Task, WeakEntity, actions,
  25};
  26use language::{Anchor, Buffer, Capability, OffsetRangeExt};
  27use multi_buffer::{MultiBuffer, PathKey};
  28use project::{
  29    Project, ProjectPath,
  30    git_store::{GitStore, GitStoreEvent, Repository},
  31};
  32use settings::{Settings, SettingsStore};
  33use std::any::{Any, TypeId};
  34use std::ops::Range;
  35use theme::ActiveTheme;
  36use ui::{KeyBinding, Tooltip, prelude::*, vertical_divider};
  37use util::ResultExt as _;
  38use workspace::{
  39    CloseActiveItem, ItemNavHistory, SerializableItem, ToolbarItemEvent, ToolbarItemLocation,
  40    ToolbarItemView, Workspace,
  41    item::{BreadcrumbText, Item, ItemEvent, ItemHandle, SaveOptions, TabContentParams},
  42    searchable::SearchableItemHandle,
  43};
  44
  45actions!(
  46    git,
  47    [
  48        /// Shows the diff between the working directory and the index.
  49        Diff,
  50        /// Adds files to the git staging area.
  51        Add
  52    ]
  53);
  54
  55pub struct ProjectDiff {
  56    project: Entity<Project>,
  57    multibuffer: Entity<MultiBuffer>,
  58    editor: Entity<Editor>,
  59    git_store: Entity<GitStore>,
  60    workspace: WeakEntity<Workspace>,
  61    focus_handle: FocusHandle,
  62    update_needed: postage::watch::Sender<()>,
  63    pending_scroll: Option<PathKey>,
  64    _task: Task<Result<()>>,
  65    _subscription: Subscription,
  66}
  67
  68#[derive(Debug)]
  69struct DiffBuffer {
  70    path_key: PathKey,
  71    buffer: Entity<Buffer>,
  72    diff: Entity<BufferDiff>,
  73    file_status: FileStatus,
  74}
  75
  76const CONFLICT_SORT_PREFIX: u64 = 1;
  77const TRACKED_SORT_PREFIX: u64 = 2;
  78const NEW_SORT_PREFIX: u64 = 3;
  79
  80impl ProjectDiff {
  81    pub(crate) fn register(workspace: &mut Workspace, cx: &mut Context<Workspace>) {
  82        workspace.register_action(Self::deploy);
  83        workspace.register_action(|workspace, _: &Add, window, cx| {
  84            Self::deploy(workspace, &Diff, window, cx);
  85        });
  86        workspace::register_serializable_item::<ProjectDiff>(cx);
  87    }
  88
  89    fn deploy(
  90        workspace: &mut Workspace,
  91        _: &Diff,
  92        window: &mut Window,
  93        cx: &mut Context<Workspace>,
  94    ) {
  95        Self::deploy_at(workspace, None, window, cx)
  96    }
  97
  98    pub fn deploy_at(
  99        workspace: &mut Workspace,
 100        entry: Option<GitStatusEntry>,
 101        window: &mut Window,
 102        cx: &mut Context<Workspace>,
 103    ) {
 104        telemetry::event!(
 105            "Git Diff Opened",
 106            source = if entry.is_some() {
 107                "Git Panel"
 108            } else {
 109                "Action"
 110            }
 111        );
 112        let project_diff = if let Some(existing) = workspace.item_of_type::<Self>(cx) {
 113            workspace.activate_item(&existing, true, true, window, cx);
 114            existing
 115        } else {
 116            let workspace_handle = cx.entity();
 117            let project_diff =
 118                cx.new(|cx| Self::new(workspace.project().clone(), workspace_handle, window, cx));
 119            workspace.add_item_to_active_pane(
 120                Box::new(project_diff.clone()),
 121                None,
 122                true,
 123                window,
 124                cx,
 125            );
 126            project_diff
 127        };
 128        if let Some(entry) = entry {
 129            project_diff.update(cx, |project_diff, cx| {
 130                project_diff.move_to_entry(entry, window, cx);
 131            })
 132        }
 133    }
 134
 135    pub fn autoscroll(&self, cx: &mut Context<Self>) {
 136        self.editor.update(cx, |editor, cx| {
 137            editor.request_autoscroll(Autoscroll::fit(), cx);
 138        })
 139    }
 140
 141    fn new(
 142        project: Entity<Project>,
 143        workspace: Entity<Workspace>,
 144        window: &mut Window,
 145        cx: &mut Context<Self>,
 146    ) -> Self {
 147        let focus_handle = cx.focus_handle();
 148        let multibuffer = cx.new(|_| MultiBuffer::new(Capability::ReadWrite));
 149
 150        let editor = cx.new(|cx| {
 151            let mut diff_display_editor =
 152                Editor::for_multibuffer(multibuffer.clone(), Some(project.clone()), window, cx);
 153            diff_display_editor.disable_diagnostics(cx);
 154            diff_display_editor.set_expand_all_diff_hunks(cx);
 155            diff_display_editor.register_addon(GitPanelAddon {
 156                workspace: workspace.downgrade(),
 157            });
 158            diff_display_editor
 159        });
 160        window.defer(cx, {
 161            let workspace = workspace.clone();
 162            let editor = editor.clone();
 163            move |window, cx| {
 164                workspace.update(cx, |workspace, cx| {
 165                    editor.update(cx, |editor, cx| {
 166                        editor.added_to_workspace(workspace, window, cx);
 167                    })
 168                });
 169            }
 170        });
 171        cx.subscribe_in(&editor, window, Self::handle_editor_event)
 172            .detach();
 173
 174        let git_store = project.read(cx).git_store().clone();
 175        let git_store_subscription = cx.subscribe_in(
 176            &git_store,
 177            window,
 178            move |this, _git_store, event, _window, _cx| match event {
 179                GitStoreEvent::ActiveRepositoryChanged(_)
 180                | GitStoreEvent::RepositoryUpdated(_, _, true)
 181                | GitStoreEvent::ConflictsUpdated => {
 182                    *this.update_needed.borrow_mut() = ();
 183                }
 184                _ => {}
 185            },
 186        );
 187
 188        let mut was_sort_by_path = GitPanelSettings::get_global(cx).sort_by_path;
 189        let mut was_collapse_untracked_diff =
 190            GitPanelSettings::get_global(cx).collapse_untracked_diff;
 191        cx.observe_global::<SettingsStore>(move |this, cx| {
 192            let is_sort_by_path = GitPanelSettings::get_global(cx).sort_by_path;
 193            let is_collapse_untracked_diff =
 194                GitPanelSettings::get_global(cx).collapse_untracked_diff;
 195            if is_sort_by_path != was_sort_by_path
 196                || is_collapse_untracked_diff != was_collapse_untracked_diff
 197            {
 198                *this.update_needed.borrow_mut() = ();
 199            }
 200            was_sort_by_path = is_sort_by_path;
 201            was_collapse_untracked_diff = is_collapse_untracked_diff;
 202        })
 203        .detach();
 204
 205        let (mut send, recv) = postage::watch::channel::<()>();
 206        let worker = window.spawn(cx, {
 207            let this = cx.weak_entity();
 208            async |cx| Self::handle_status_updates(this, recv, cx).await
 209        });
 210        // Kick off a refresh immediately
 211        *send.borrow_mut() = ();
 212
 213        Self {
 214            project,
 215            git_store: git_store.clone(),
 216            workspace: workspace.downgrade(),
 217            focus_handle,
 218            editor,
 219            multibuffer,
 220            pending_scroll: None,
 221            update_needed: send,
 222            _task: worker,
 223            _subscription: git_store_subscription,
 224        }
 225    }
 226
 227    pub fn move_to_entry(
 228        &mut self,
 229        entry: GitStatusEntry,
 230        window: &mut Window,
 231        cx: &mut Context<Self>,
 232    ) {
 233        let Some(git_repo) = self.git_store.read(cx).active_repository() else {
 234            return;
 235        };
 236        let repo = git_repo.read(cx);
 237        let sort_prefix = sort_prefix(repo, &entry.repo_path, entry.status, cx);
 238        let path_key = PathKey::with_sort_prefix(sort_prefix, entry.repo_path.0);
 239
 240        self.move_to_path(path_key, window, cx)
 241    }
 242
 243    pub fn active_path(&self, cx: &App) -> Option<ProjectPath> {
 244        let editor = self.editor.read(cx);
 245        let position = editor.selections.newest_anchor().head();
 246        let multi_buffer = editor.buffer().read(cx);
 247        let (_, buffer, _) = multi_buffer.excerpt_containing(position, cx)?;
 248
 249        let file = buffer.read(cx).file()?;
 250        Some(ProjectPath {
 251            worktree_id: file.worktree_id(cx),
 252            path: file.path().clone(),
 253        })
 254    }
 255
 256    fn move_to_path(&mut self, path_key: PathKey, window: &mut Window, cx: &mut Context<Self>) {
 257        if let Some(position) = self.multibuffer.read(cx).location_for_path(&path_key, cx) {
 258            self.editor.update(cx, |editor, cx| {
 259                editor.change_selections(
 260                    SelectionEffects::scroll(Autoscroll::focused()),
 261                    window,
 262                    cx,
 263                    |s| {
 264                        s.select_ranges([position..position]);
 265                    },
 266                )
 267            });
 268        } else {
 269            self.pending_scroll = Some(path_key);
 270        }
 271    }
 272
 273    fn button_states(&self, cx: &App) -> ButtonStates {
 274        let editor = self.editor.read(cx);
 275        let snapshot = self.multibuffer.read(cx).snapshot(cx);
 276        let prev_next = snapshot.diff_hunks().nth(1).is_some();
 277        let mut selection = true;
 278
 279        let mut ranges = editor
 280            .selections
 281            .disjoint_anchor_ranges()
 282            .collect::<Vec<_>>();
 283        if !ranges.iter().any(|range| range.start != range.end) {
 284            selection = false;
 285            if let Some((excerpt_id, buffer, range)) = self.editor.read(cx).active_excerpt(cx) {
 286                ranges = vec![multi_buffer::Anchor::range_in_buffer(
 287                    excerpt_id,
 288                    buffer.read(cx).remote_id(),
 289                    range,
 290                )];
 291            } else {
 292                ranges = Vec::default();
 293            }
 294        }
 295        let mut has_staged_hunks = false;
 296        let mut has_unstaged_hunks = false;
 297        for hunk in editor.diff_hunks_in_ranges(&ranges, &snapshot) {
 298            match hunk.secondary_status {
 299                DiffHunkSecondaryStatus::HasSecondaryHunk
 300                | DiffHunkSecondaryStatus::SecondaryHunkAdditionPending => {
 301                    has_unstaged_hunks = true;
 302                }
 303                DiffHunkSecondaryStatus::OverlapsWithSecondaryHunk => {
 304                    has_staged_hunks = true;
 305                    has_unstaged_hunks = true;
 306                }
 307                DiffHunkSecondaryStatus::NoSecondaryHunk
 308                | DiffHunkSecondaryStatus::SecondaryHunkRemovalPending => {
 309                    has_staged_hunks = true;
 310                }
 311            }
 312        }
 313        let mut stage_all = false;
 314        let mut unstage_all = false;
 315        self.workspace
 316            .read_with(cx, |workspace, cx| {
 317                if let Some(git_panel) = workspace.panel::<GitPanel>(cx) {
 318                    let git_panel = git_panel.read(cx);
 319                    stage_all = git_panel.can_stage_all();
 320                    unstage_all = git_panel.can_unstage_all();
 321                }
 322            })
 323            .ok();
 324
 325        ButtonStates {
 326            stage: has_unstaged_hunks,
 327            unstage: has_staged_hunks,
 328            prev_next,
 329            selection,
 330            stage_all,
 331            unstage_all,
 332        }
 333    }
 334
 335    fn handle_editor_event(
 336        &mut self,
 337        editor: &Entity<Editor>,
 338        event: &EditorEvent,
 339        window: &mut Window,
 340        cx: &mut Context<Self>,
 341    ) {
 342        if let EditorEvent::SelectionsChanged { local: true } = event {
 343            let Some(project_path) = self.active_path(cx) else {
 344                return;
 345            };
 346            self.workspace
 347                .update(cx, |workspace, cx| {
 348                    if let Some(git_panel) = workspace.panel::<GitPanel>(cx) {
 349                        git_panel.update(cx, |git_panel, cx| {
 350                            git_panel.select_entry_by_path(project_path, window, cx)
 351                        })
 352                    }
 353                })
 354                .ok();
 355        }
 356        if editor.focus_handle(cx).contains_focused(window, cx)
 357            && self.multibuffer.read(cx).is_empty()
 358        {
 359            self.focus_handle.focus(window)
 360        }
 361    }
 362
 363    fn load_buffers(&mut self, cx: &mut Context<Self>) -> Vec<Task<Result<DiffBuffer>>> {
 364        let Some(repo) = self.git_store.read(cx).active_repository() else {
 365            self.multibuffer.update(cx, |multibuffer, cx| {
 366                multibuffer.clear(cx);
 367            });
 368            return vec![];
 369        };
 370
 371        let mut previous_paths = self.multibuffer.read(cx).paths().collect::<HashSet<_>>();
 372
 373        let mut result = vec![];
 374        repo.update(cx, |repo, cx| {
 375            for entry in repo.cached_status() {
 376                if !entry.status.has_changes() {
 377                    continue;
 378                }
 379                let Some(project_path) = repo.repo_path_to_project_path(&entry.repo_path, cx)
 380                else {
 381                    continue;
 382                };
 383                let sort_prefix = sort_prefix(repo, &entry.repo_path, entry.status, cx);
 384                let path_key = PathKey::with_sort_prefix(sort_prefix, entry.repo_path.0.clone());
 385
 386                previous_paths.remove(&path_key);
 387                let load_buffer = self
 388                    .project
 389                    .update(cx, |project, cx| project.open_buffer(project_path, cx));
 390
 391                let project = self.project.clone();
 392                result.push(cx.spawn(async move |_, cx| {
 393                    let buffer = load_buffer.await?;
 394                    let changes = project
 395                        .update(cx, |project, cx| {
 396                            project.open_uncommitted_diff(buffer.clone(), cx)
 397                        })?
 398                        .await?;
 399                    Ok(DiffBuffer {
 400                        path_key,
 401                        buffer,
 402                        diff: changes,
 403                        file_status: entry.status,
 404                    })
 405                }));
 406            }
 407        });
 408        self.multibuffer.update(cx, |multibuffer, cx| {
 409            for path in previous_paths {
 410                multibuffer.remove_excerpts_for_path(path, cx);
 411            }
 412        });
 413        result
 414    }
 415
 416    fn register_buffer(
 417        &mut self,
 418        diff_buffer: DiffBuffer,
 419        window: &mut Window,
 420        cx: &mut Context<Self>,
 421    ) {
 422        let path_key = diff_buffer.path_key;
 423        let buffer = diff_buffer.buffer;
 424        let diff = diff_buffer.diff;
 425
 426        let conflict_addon = self
 427            .editor
 428            .read(cx)
 429            .addon::<ConflictAddon>()
 430            .expect("project diff editor should have a conflict addon");
 431
 432        let snapshot = buffer.read(cx).snapshot();
 433        let diff = diff.read(cx);
 434        let diff_hunk_ranges = diff
 435            .hunks_intersecting_range(Anchor::MIN..Anchor::MAX, &snapshot, cx)
 436            .map(|diff_hunk| diff_hunk.buffer_range);
 437        let conflicts = conflict_addon
 438            .conflict_set(snapshot.remote_id())
 439            .map(|conflict_set| conflict_set.read(cx).snapshot().conflicts)
 440            .unwrap_or_default();
 441        let conflicts = conflicts.iter().map(|conflict| conflict.range.clone());
 442
 443        let excerpt_ranges = merge_anchor_ranges(diff_hunk_ranges, conflicts, &snapshot)
 444            .map(|range| range.to_point(&snapshot))
 445            .collect::<Vec<_>>();
 446
 447        let (was_empty, is_excerpt_newly_added) = self.multibuffer.update(cx, |multibuffer, cx| {
 448            let was_empty = multibuffer.is_empty();
 449            let (_, is_newly_added) = multibuffer.set_excerpts_for_path(
 450                path_key.clone(),
 451                buffer,
 452                excerpt_ranges,
 453                multibuffer_context_lines(cx),
 454                cx,
 455            );
 456            (was_empty, is_newly_added)
 457        });
 458
 459        self.editor.update(cx, |editor, cx| {
 460            if was_empty {
 461                editor.change_selections(SelectionEffects::no_scroll(), window, cx, |selections| {
 462                    // TODO select the very beginning (possibly inside a deletion)
 463                    selections.select_ranges([0..0])
 464                });
 465            }
 466            if is_excerpt_newly_added
 467                && (diff_buffer.file_status.is_deleted()
 468                    || (diff_buffer.file_status.is_untracked()
 469                        && GitPanelSettings::get_global(cx).collapse_untracked_diff))
 470            {
 471                editor.fold_buffer(snapshot.text.remote_id(), cx)
 472            }
 473        });
 474
 475        if self.multibuffer.read(cx).is_empty()
 476            && self
 477                .editor
 478                .read(cx)
 479                .focus_handle(cx)
 480                .contains_focused(window, cx)
 481        {
 482            self.focus_handle.focus(window);
 483        } else if self.focus_handle.is_focused(window) && !self.multibuffer.read(cx).is_empty() {
 484            self.editor.update(cx, |editor, cx| {
 485                editor.focus_handle(cx).focus(window);
 486            });
 487        }
 488        if self.pending_scroll.as_ref() == Some(&path_key) {
 489            self.move_to_path(path_key, window, cx);
 490        }
 491    }
 492
 493    pub async fn handle_status_updates(
 494        this: WeakEntity<Self>,
 495        mut recv: postage::watch::Receiver<()>,
 496        cx: &mut AsyncWindowContext,
 497    ) -> Result<()> {
 498        while (recv.next().await).is_some() {
 499            let buffers_to_load = this.update(cx, |this, cx| this.load_buffers(cx))?;
 500            for buffer_to_load in buffers_to_load {
 501                if let Some(buffer) = buffer_to_load.await.log_err() {
 502                    cx.update(|window, cx| {
 503                        this.update(cx, |this, cx| this.register_buffer(buffer, window, cx))
 504                            .ok();
 505                    })?;
 506                }
 507            }
 508            this.update(cx, |this, cx| {
 509                this.pending_scroll.take();
 510                cx.notify();
 511            })?;
 512        }
 513
 514        Ok(())
 515    }
 516
 517    #[cfg(any(test, feature = "test-support"))]
 518    pub fn excerpt_paths(&self, cx: &App) -> Vec<std::sync::Arc<util::rel_path::RelPath>> {
 519        self.multibuffer
 520            .read(cx)
 521            .excerpt_paths()
 522            .map(|key| key.path())
 523            .cloned()
 524            .collect()
 525    }
 526}
 527
 528fn sort_prefix(repo: &Repository, repo_path: &RepoPath, status: FileStatus, cx: &App) -> u64 {
 529    if GitPanelSettings::get_global(cx).sort_by_path {
 530        TRACKED_SORT_PREFIX
 531    } else if repo.had_conflict_on_last_merge_head_change(repo_path) {
 532        CONFLICT_SORT_PREFIX
 533    } else if status.is_created() {
 534        NEW_SORT_PREFIX
 535    } else {
 536        TRACKED_SORT_PREFIX
 537    }
 538}
 539
 540impl EventEmitter<EditorEvent> for ProjectDiff {}
 541
 542impl Focusable for ProjectDiff {
 543    fn focus_handle(&self, cx: &App) -> FocusHandle {
 544        if self.multibuffer.read(cx).is_empty() {
 545            self.focus_handle.clone()
 546        } else {
 547            self.editor.focus_handle(cx)
 548        }
 549    }
 550}
 551
 552impl Item for ProjectDiff {
 553    type Event = EditorEvent;
 554
 555    fn tab_icon(&self, _window: &Window, _cx: &App) -> Option<Icon> {
 556        Some(Icon::new(IconName::GitBranch).color(Color::Muted))
 557    }
 558
 559    fn to_item_events(event: &EditorEvent, f: impl FnMut(ItemEvent)) {
 560        Editor::to_item_events(event, f)
 561    }
 562
 563    fn deactivated(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 564        self.editor
 565            .update(cx, |editor, cx| editor.deactivated(window, cx));
 566    }
 567
 568    fn navigate(
 569        &mut self,
 570        data: Box<dyn Any>,
 571        window: &mut Window,
 572        cx: &mut Context<Self>,
 573    ) -> bool {
 574        self.editor
 575            .update(cx, |editor, cx| editor.navigate(data, window, cx))
 576    }
 577
 578    fn tab_tooltip_text(&self, _: &App) -> Option<SharedString> {
 579        Some("Project Diff".into())
 580    }
 581
 582    fn tab_content(&self, params: TabContentParams, _window: &Window, _: &App) -> AnyElement {
 583        Label::new("Uncommitted Changes")
 584            .color(if params.selected {
 585                Color::Default
 586            } else {
 587                Color::Muted
 588            })
 589            .into_any_element()
 590    }
 591
 592    fn tab_content_text(&self, _detail: usize, _: &App) -> SharedString {
 593        "Uncommitted Changes".into()
 594    }
 595
 596    fn telemetry_event_text(&self) -> Option<&'static str> {
 597        Some("Project Diff Opened")
 598    }
 599
 600    fn as_searchable(&self, _: &Entity<Self>) -> Option<Box<dyn SearchableItemHandle>> {
 601        Some(Box::new(self.editor.clone()))
 602    }
 603
 604    fn for_each_project_item(
 605        &self,
 606        cx: &App,
 607        f: &mut dyn FnMut(gpui::EntityId, &dyn project::ProjectItem),
 608    ) {
 609        self.editor.for_each_project_item(cx, f)
 610    }
 611
 612    fn set_nav_history(
 613        &mut self,
 614        nav_history: ItemNavHistory,
 615        _: &mut Window,
 616        cx: &mut Context<Self>,
 617    ) {
 618        self.editor.update(cx, |editor, _| {
 619            editor.set_nav_history(Some(nav_history));
 620        });
 621    }
 622
 623    fn clone_on_split(
 624        &self,
 625        _workspace_id: Option<workspace::WorkspaceId>,
 626        window: &mut Window,
 627        cx: &mut Context<Self>,
 628    ) -> Option<Entity<Self>>
 629    where
 630        Self: Sized,
 631    {
 632        let workspace = self.workspace.upgrade()?;
 633        Some(cx.new(|cx| ProjectDiff::new(self.project.clone(), workspace, window, cx)))
 634    }
 635
 636    fn is_dirty(&self, cx: &App) -> bool {
 637        self.multibuffer.read(cx).is_dirty(cx)
 638    }
 639
 640    fn has_conflict(&self, cx: &App) -> bool {
 641        self.multibuffer.read(cx).has_conflict(cx)
 642    }
 643
 644    fn can_save(&self, _: &App) -> bool {
 645        true
 646    }
 647
 648    fn save(
 649        &mut self,
 650        options: SaveOptions,
 651        project: Entity<Project>,
 652        window: &mut Window,
 653        cx: &mut Context<Self>,
 654    ) -> Task<Result<()>> {
 655        self.editor.save(options, project, window, cx)
 656    }
 657
 658    fn save_as(
 659        &mut self,
 660        _: Entity<Project>,
 661        _: ProjectPath,
 662        _window: &mut Window,
 663        _: &mut Context<Self>,
 664    ) -> Task<Result<()>> {
 665        unreachable!()
 666    }
 667
 668    fn reload(
 669        &mut self,
 670        project: Entity<Project>,
 671        window: &mut Window,
 672        cx: &mut Context<Self>,
 673    ) -> Task<Result<()>> {
 674        self.editor.reload(project, window, cx)
 675    }
 676
 677    fn act_as_type<'a>(
 678        &'a self,
 679        type_id: TypeId,
 680        self_handle: &'a Entity<Self>,
 681        _: &'a App,
 682    ) -> Option<AnyView> {
 683        if type_id == TypeId::of::<Self>() {
 684            Some(self_handle.to_any())
 685        } else if type_id == TypeId::of::<Editor>() {
 686            Some(self.editor.to_any())
 687        } else {
 688            None
 689        }
 690    }
 691
 692    fn breadcrumb_location(&self, _: &App) -> ToolbarItemLocation {
 693        ToolbarItemLocation::PrimaryLeft
 694    }
 695
 696    fn breadcrumbs(&self, theme: &theme::Theme, cx: &App) -> Option<Vec<BreadcrumbText>> {
 697        self.editor.breadcrumbs(theme, cx)
 698    }
 699
 700    fn added_to_workspace(
 701        &mut self,
 702        workspace: &mut Workspace,
 703        window: &mut Window,
 704        cx: &mut Context<Self>,
 705    ) {
 706        self.editor.update(cx, |editor, cx| {
 707            editor.added_to_workspace(workspace, window, cx)
 708        });
 709    }
 710}
 711
 712impl Render for ProjectDiff {
 713    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 714        let is_empty = self.multibuffer.read(cx).is_empty();
 715
 716        div()
 717            .track_focus(&self.focus_handle)
 718            .key_context(if is_empty { "EmptyPane" } else { "GitDiff" })
 719            .bg(cx.theme().colors().editor_background)
 720            .flex()
 721            .items_center()
 722            .justify_center()
 723            .size_full()
 724            .when(is_empty, |el| {
 725                let remote_button = if let Some(panel) = self
 726                    .workspace
 727                    .upgrade()
 728                    .and_then(|workspace| workspace.read(cx).panel::<GitPanel>(cx))
 729                {
 730                    panel.update(cx, |panel, cx| panel.render_remote_button(cx))
 731                } else {
 732                    None
 733                };
 734                let keybinding_focus_handle = self.focus_handle(cx);
 735                el.child(
 736                    v_flex()
 737                        .gap_1()
 738                        .child(
 739                            h_flex()
 740                                .justify_around()
 741                                .child(Label::new("No uncommitted changes")),
 742                        )
 743                        .map(|el| match remote_button {
 744                            Some(button) => el.child(h_flex().justify_around().child(button)),
 745                            None => el.child(
 746                                h_flex()
 747                                    .justify_around()
 748                                    .child(Label::new("Remote up to date")),
 749                            ),
 750                        })
 751                        .child(
 752                            h_flex().justify_around().mt_1().child(
 753                                Button::new("project-diff-close-button", "Close")
 754                                    // .style(ButtonStyle::Transparent)
 755                                    .key_binding(KeyBinding::for_action_in(
 756                                        &CloseActiveItem::default(),
 757                                        &keybinding_focus_handle,
 758                                        window,
 759                                        cx,
 760                                    ))
 761                                    .on_click(move |_, window, cx| {
 762                                        window.focus(&keybinding_focus_handle);
 763                                        window.dispatch_action(
 764                                            Box::new(CloseActiveItem::default()),
 765                                            cx,
 766                                        );
 767                                    }),
 768                            ),
 769                        ),
 770                )
 771            })
 772            .when(!is_empty, |el| el.child(self.editor.clone()))
 773    }
 774}
 775
 776impl SerializableItem for ProjectDiff {
 777    fn serialized_item_kind() -> &'static str {
 778        "ProjectDiff"
 779    }
 780
 781    fn cleanup(
 782        _: workspace::WorkspaceId,
 783        _: Vec<workspace::ItemId>,
 784        _: &mut Window,
 785        _: &mut App,
 786    ) -> Task<Result<()>> {
 787        Task::ready(Ok(()))
 788    }
 789
 790    fn deserialize(
 791        _project: Entity<Project>,
 792        workspace: WeakEntity<Workspace>,
 793        _workspace_id: workspace::WorkspaceId,
 794        _item_id: workspace::ItemId,
 795        window: &mut Window,
 796        cx: &mut App,
 797    ) -> Task<Result<Entity<Self>>> {
 798        window.spawn(cx, async move |cx| {
 799            workspace.update_in(cx, |workspace, window, cx| {
 800                let workspace_handle = cx.entity();
 801                cx.new(|cx| Self::new(workspace.project().clone(), workspace_handle, window, cx))
 802            })
 803        })
 804    }
 805
 806    fn serialize(
 807        &mut self,
 808        _workspace: &mut Workspace,
 809        _item_id: workspace::ItemId,
 810        _closing: bool,
 811        _window: &mut Window,
 812        _cx: &mut Context<Self>,
 813    ) -> Option<Task<Result<()>>> {
 814        None
 815    }
 816
 817    fn should_serialize(&self, _: &Self::Event) -> bool {
 818        false
 819    }
 820}
 821
 822pub struct ProjectDiffToolbar {
 823    project_diff: Option<WeakEntity<ProjectDiff>>,
 824    workspace: WeakEntity<Workspace>,
 825}
 826
 827impl ProjectDiffToolbar {
 828    pub fn new(workspace: &Workspace, _: &mut Context<Self>) -> Self {
 829        Self {
 830            project_diff: None,
 831            workspace: workspace.weak_handle(),
 832        }
 833    }
 834
 835    fn project_diff(&self, _: &App) -> Option<Entity<ProjectDiff>> {
 836        self.project_diff.as_ref()?.upgrade()
 837    }
 838
 839    fn dispatch_action(&self, action: &dyn Action, window: &mut Window, cx: &mut Context<Self>) {
 840        if let Some(project_diff) = self.project_diff(cx) {
 841            project_diff.focus_handle(cx).focus(window);
 842        }
 843        let action = action.boxed_clone();
 844        cx.defer(move |cx| {
 845            cx.dispatch_action(action.as_ref());
 846        })
 847    }
 848
 849    fn stage_all(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 850        self.workspace
 851            .update(cx, |workspace, cx| {
 852                if let Some(panel) = workspace.panel::<GitPanel>(cx) {
 853                    panel.update(cx, |panel, cx| {
 854                        panel.stage_all(&Default::default(), window, cx);
 855                    });
 856                }
 857            })
 858            .ok();
 859    }
 860
 861    fn unstage_all(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 862        self.workspace
 863            .update(cx, |workspace, cx| {
 864                let Some(panel) = workspace.panel::<GitPanel>(cx) else {
 865                    return;
 866                };
 867                panel.update(cx, |panel, cx| {
 868                    panel.unstage_all(&Default::default(), window, cx);
 869                });
 870            })
 871            .ok();
 872    }
 873}
 874
 875impl EventEmitter<ToolbarItemEvent> for ProjectDiffToolbar {}
 876
 877impl ToolbarItemView for ProjectDiffToolbar {
 878    fn set_active_pane_item(
 879        &mut self,
 880        active_pane_item: Option<&dyn ItemHandle>,
 881        _: &mut Window,
 882        cx: &mut Context<Self>,
 883    ) -> ToolbarItemLocation {
 884        self.project_diff = active_pane_item
 885            .and_then(|item| item.act_as::<ProjectDiff>(cx))
 886            .map(|entity| entity.downgrade());
 887        if self.project_diff.is_some() {
 888            ToolbarItemLocation::PrimaryRight
 889        } else {
 890            ToolbarItemLocation::Hidden
 891        }
 892    }
 893
 894    fn pane_focus_update(
 895        &mut self,
 896        _pane_focused: bool,
 897        _window: &mut Window,
 898        _cx: &mut Context<Self>,
 899    ) {
 900    }
 901}
 902
 903struct ButtonStates {
 904    stage: bool,
 905    unstage: bool,
 906    prev_next: bool,
 907    selection: bool,
 908    stage_all: bool,
 909    unstage_all: bool,
 910}
 911
 912impl Render for ProjectDiffToolbar {
 913    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 914        let Some(project_diff) = self.project_diff(cx) else {
 915            return div();
 916        };
 917        let focus_handle = project_diff.focus_handle(cx);
 918        let button_states = project_diff.read(cx).button_states(cx);
 919
 920        h_group_xl()
 921            .my_neg_1()
 922            .py_1()
 923            .items_center()
 924            .flex_wrap()
 925            .justify_between()
 926            .child(
 927                h_group_sm()
 928                    .when(button_states.selection, |el| {
 929                        el.child(
 930                            Button::new("stage", "Toggle Staged")
 931                                .tooltip(Tooltip::for_action_title_in(
 932                                    "Toggle Staged",
 933                                    &ToggleStaged,
 934                                    &focus_handle,
 935                                ))
 936                                .disabled(!button_states.stage && !button_states.unstage)
 937                                .on_click(cx.listener(|this, _, window, cx| {
 938                                    this.dispatch_action(&ToggleStaged, window, cx)
 939                                })),
 940                        )
 941                    })
 942                    .when(!button_states.selection, |el| {
 943                        el.child(
 944                            Button::new("stage", "Stage")
 945                                .tooltip(Tooltip::for_action_title_in(
 946                                    "Stage and go to next hunk",
 947                                    &StageAndNext,
 948                                    &focus_handle,
 949                                ))
 950                                .on_click(cx.listener(|this, _, window, cx| {
 951                                    this.dispatch_action(&StageAndNext, window, cx)
 952                                })),
 953                        )
 954                        .child(
 955                            Button::new("unstage", "Unstage")
 956                                .tooltip(Tooltip::for_action_title_in(
 957                                    "Unstage and go to next hunk",
 958                                    &UnstageAndNext,
 959                                    &focus_handle,
 960                                ))
 961                                .on_click(cx.listener(|this, _, window, cx| {
 962                                    this.dispatch_action(&UnstageAndNext, window, cx)
 963                                })),
 964                        )
 965                    }),
 966            )
 967            // n.b. the only reason these arrows are here is because we don't
 968            // support "undo" for staging so we need a way to go back.
 969            .child(
 970                h_group_sm()
 971                    .child(
 972                        IconButton::new("up", IconName::ArrowUp)
 973                            .shape(ui::IconButtonShape::Square)
 974                            .tooltip(Tooltip::for_action_title_in(
 975                                "Go to previous hunk",
 976                                &GoToPreviousHunk,
 977                                &focus_handle,
 978                            ))
 979                            .disabled(!button_states.prev_next)
 980                            .on_click(cx.listener(|this, _, window, cx| {
 981                                this.dispatch_action(&GoToPreviousHunk, window, cx)
 982                            })),
 983                    )
 984                    .child(
 985                        IconButton::new("down", IconName::ArrowDown)
 986                            .shape(ui::IconButtonShape::Square)
 987                            .tooltip(Tooltip::for_action_title_in(
 988                                "Go to next hunk",
 989                                &GoToHunk,
 990                                &focus_handle,
 991                            ))
 992                            .disabled(!button_states.prev_next)
 993                            .on_click(cx.listener(|this, _, window, cx| {
 994                                this.dispatch_action(&GoToHunk, window, cx)
 995                            })),
 996                    ),
 997            )
 998            .child(vertical_divider())
 999            .child(
1000                h_group_sm()
1001                    .when(
1002                        button_states.unstage_all && !button_states.stage_all,
1003                        |el| {
1004                            el.child(
1005                                Button::new("unstage-all", "Unstage All")
1006                                    .tooltip(Tooltip::for_action_title_in(
1007                                        "Unstage all changes",
1008                                        &UnstageAll,
1009                                        &focus_handle,
1010                                    ))
1011                                    .on_click(cx.listener(|this, _, window, cx| {
1012                                        this.unstage_all(window, cx)
1013                                    })),
1014                            )
1015                        },
1016                    )
1017                    .when(
1018                        !button_states.unstage_all || button_states.stage_all,
1019                        |el| {
1020                            el.child(
1021                                // todo make it so that changing to say "Unstaged"
1022                                // doesn't change the position.
1023                                div().child(
1024                                    Button::new("stage-all", "Stage All")
1025                                        .disabled(!button_states.stage_all)
1026                                        .tooltip(Tooltip::for_action_title_in(
1027                                            "Stage all changes",
1028                                            &StageAll,
1029                                            &focus_handle,
1030                                        ))
1031                                        .on_click(cx.listener(|this, _, window, cx| {
1032                                            this.stage_all(window, cx)
1033                                        })),
1034                                ),
1035                            )
1036                        },
1037                    )
1038                    .child(
1039                        Button::new("commit", "Commit")
1040                            .tooltip(Tooltip::for_action_title_in(
1041                                "Commit",
1042                                &Commit,
1043                                &focus_handle,
1044                            ))
1045                            .on_click(cx.listener(|this, _, window, cx| {
1046                                this.dispatch_action(&Commit, window, cx);
1047                            })),
1048                    ),
1049            )
1050    }
1051}
1052
1053#[derive(IntoElement, RegisterComponent)]
1054pub struct ProjectDiffEmptyState {
1055    pub no_repo: bool,
1056    pub can_push_and_pull: bool,
1057    pub focus_handle: Option<FocusHandle>,
1058    pub current_branch: Option<Branch>,
1059    // has_pending_commits: bool,
1060    // ahead_of_remote: bool,
1061    // no_git_repository: bool,
1062}
1063
1064impl RenderOnce for ProjectDiffEmptyState {
1065    fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
1066        let status_against_remote = |ahead_by: usize, behind_by: usize| -> bool {
1067            matches!(self.current_branch, Some(Branch {
1068                    upstream:
1069                        Some(Upstream {
1070                            tracking:
1071                                UpstreamTracking::Tracked(UpstreamTrackingStatus {
1072                                    ahead, behind, ..
1073                                }),
1074                            ..
1075                        }),
1076                    ..
1077                }) if (ahead > 0) == (ahead_by > 0) && (behind > 0) == (behind_by > 0))
1078        };
1079
1080        let change_count = |current_branch: &Branch| -> (usize, usize) {
1081            match current_branch {
1082                Branch {
1083                    upstream:
1084                        Some(Upstream {
1085                            tracking:
1086                                UpstreamTracking::Tracked(UpstreamTrackingStatus {
1087                                    ahead, behind, ..
1088                                }),
1089                            ..
1090                        }),
1091                    ..
1092                } => (*ahead as usize, *behind as usize),
1093                _ => (0, 0),
1094            }
1095        };
1096
1097        let not_ahead_or_behind = status_against_remote(0, 0);
1098        let ahead_of_remote = status_against_remote(1, 0);
1099        let branch_not_on_remote = if let Some(branch) = self.current_branch.as_ref() {
1100            branch.upstream.is_none()
1101        } else {
1102            false
1103        };
1104
1105        let has_branch_container = |branch: &Branch| {
1106            h_flex()
1107                .max_w(px(420.))
1108                .bg(cx.theme().colors().text.opacity(0.05))
1109                .border_1()
1110                .border_color(cx.theme().colors().border)
1111                .rounded_sm()
1112                .gap_8()
1113                .px_6()
1114                .py_4()
1115                .map(|this| {
1116                    if ahead_of_remote {
1117                        let ahead_count = change_count(branch).0;
1118                        let ahead_string = format!("{} Commits Ahead", ahead_count);
1119                        this.child(
1120                            v_flex()
1121                                .child(Headline::new(ahead_string).size(HeadlineSize::Small))
1122                                .child(
1123                                    Label::new(format!("Push your changes to {}", branch.name()))
1124                                        .color(Color::Muted),
1125                                ),
1126                        )
1127                        .child(div().child(render_push_button(
1128                            self.focus_handle,
1129                            "push".into(),
1130                            ahead_count as u32,
1131                        )))
1132                    } else if branch_not_on_remote {
1133                        this.child(
1134                            v_flex()
1135                                .child(Headline::new("Publish Branch").size(HeadlineSize::Small))
1136                                .child(
1137                                    Label::new(format!("Create {} on remote", branch.name()))
1138                                        .color(Color::Muted),
1139                                ),
1140                        )
1141                        .child(
1142                            div().child(render_publish_button(self.focus_handle, "publish".into())),
1143                        )
1144                    } else {
1145                        this.child(Label::new("Remote status unknown").color(Color::Muted))
1146                    }
1147                })
1148        };
1149
1150        v_flex().size_full().items_center().justify_center().child(
1151            v_flex()
1152                .gap_1()
1153                .when(self.no_repo, |this| {
1154                    // TODO: add git init
1155                    this.text_center()
1156                        .child(Label::new("No Repository").color(Color::Muted))
1157                })
1158                .map(|this| {
1159                    if not_ahead_or_behind && self.current_branch.is_some() {
1160                        this.text_center()
1161                            .child(Label::new("No Changes").color(Color::Muted))
1162                    } else {
1163                        this.when_some(self.current_branch.as_ref(), |this, branch| {
1164                            this.child(has_branch_container(branch))
1165                        })
1166                    }
1167                }),
1168        )
1169    }
1170}
1171
1172mod preview {
1173    use git::repository::{
1174        Branch, CommitSummary, Upstream, UpstreamTracking, UpstreamTrackingStatus,
1175    };
1176    use ui::prelude::*;
1177
1178    use super::ProjectDiffEmptyState;
1179
1180    // View this component preview using `workspace: open component-preview`
1181    impl Component for ProjectDiffEmptyState {
1182        fn scope() -> ComponentScope {
1183            ComponentScope::VersionControl
1184        }
1185
1186        fn preview(_window: &mut Window, _cx: &mut App) -> Option<AnyElement> {
1187            let unknown_upstream: Option<UpstreamTracking> = None;
1188            let ahead_of_upstream: Option<UpstreamTracking> = Some(
1189                UpstreamTrackingStatus {
1190                    ahead: 2,
1191                    behind: 0,
1192                }
1193                .into(),
1194            );
1195
1196            let not_ahead_or_behind_upstream: Option<UpstreamTracking> = Some(
1197                UpstreamTrackingStatus {
1198                    ahead: 0,
1199                    behind: 0,
1200                }
1201                .into(),
1202            );
1203
1204            fn branch(upstream: Option<UpstreamTracking>) -> Branch {
1205                Branch {
1206                    is_head: true,
1207                    ref_name: "some-branch".into(),
1208                    upstream: upstream.map(|tracking| Upstream {
1209                        ref_name: "origin/some-branch".into(),
1210                        tracking,
1211                    }),
1212                    most_recent_commit: Some(CommitSummary {
1213                        sha: "abc123".into(),
1214                        subject: "Modify stuff".into(),
1215                        commit_timestamp: 1710932954,
1216                        author_name: "John Doe".into(),
1217                        has_parent: true,
1218                    }),
1219                }
1220            }
1221
1222            let no_repo_state = ProjectDiffEmptyState {
1223                no_repo: true,
1224                can_push_and_pull: false,
1225                focus_handle: None,
1226                current_branch: None,
1227            };
1228
1229            let no_changes_state = ProjectDiffEmptyState {
1230                no_repo: false,
1231                can_push_and_pull: true,
1232                focus_handle: None,
1233                current_branch: Some(branch(not_ahead_or_behind_upstream)),
1234            };
1235
1236            let ahead_of_upstream_state = ProjectDiffEmptyState {
1237                no_repo: false,
1238                can_push_and_pull: true,
1239                focus_handle: None,
1240                current_branch: Some(branch(ahead_of_upstream)),
1241            };
1242
1243            let unknown_upstream_state = ProjectDiffEmptyState {
1244                no_repo: false,
1245                can_push_and_pull: true,
1246                focus_handle: None,
1247                current_branch: Some(branch(unknown_upstream)),
1248            };
1249
1250            let (width, height) = (px(480.), px(320.));
1251
1252            Some(
1253                v_flex()
1254                    .gap_6()
1255                    .children(vec![
1256                        example_group(vec![
1257                            single_example(
1258                                "No Repo",
1259                                div()
1260                                    .w(width)
1261                                    .h(height)
1262                                    .child(no_repo_state)
1263                                    .into_any_element(),
1264                            ),
1265                            single_example(
1266                                "No Changes",
1267                                div()
1268                                    .w(width)
1269                                    .h(height)
1270                                    .child(no_changes_state)
1271                                    .into_any_element(),
1272                            ),
1273                            single_example(
1274                                "Unknown Upstream",
1275                                div()
1276                                    .w(width)
1277                                    .h(height)
1278                                    .child(unknown_upstream_state)
1279                                    .into_any_element(),
1280                            ),
1281                            single_example(
1282                                "Ahead of Remote",
1283                                div()
1284                                    .w(width)
1285                                    .h(height)
1286                                    .child(ahead_of_upstream_state)
1287                                    .into_any_element(),
1288                            ),
1289                        ])
1290                        .vertical(),
1291                    ])
1292                    .into_any_element(),
1293            )
1294        }
1295    }
1296}
1297
1298fn merge_anchor_ranges<'a>(
1299    left: impl 'a + Iterator<Item = Range<Anchor>>,
1300    right: impl 'a + Iterator<Item = Range<Anchor>>,
1301    snapshot: &'a language::BufferSnapshot,
1302) -> impl 'a + Iterator<Item = Range<Anchor>> {
1303    let mut left = left.fuse().peekable();
1304    let mut right = right.fuse().peekable();
1305
1306    std::iter::from_fn(move || {
1307        let Some(left_range) = left.peek() else {
1308            return right.next();
1309        };
1310        let Some(right_range) = right.peek() else {
1311            return left.next();
1312        };
1313
1314        let mut next_range = if left_range.start.cmp(&right_range.start, snapshot).is_lt() {
1315            left.next().unwrap()
1316        } else {
1317            right.next().unwrap()
1318        };
1319
1320        // Extend the basic range while there's overlap with a range from either stream.
1321        loop {
1322            if let Some(left_range) = left
1323                .peek()
1324                .filter(|range| range.start.cmp(&next_range.end, snapshot).is_le())
1325                .cloned()
1326            {
1327                left.next();
1328                next_range.end = left_range.end;
1329            } else if let Some(right_range) = right
1330                .peek()
1331                .filter(|range| range.start.cmp(&next_range.end, snapshot).is_le())
1332                .cloned()
1333            {
1334                right.next();
1335                next_range.end = right_range.end;
1336            } else {
1337                break;
1338            }
1339        }
1340
1341        Some(next_range)
1342    })
1343}
1344
1345#[cfg(test)]
1346mod tests {
1347    use db::indoc;
1348    use editor::test::editor_test_context::{EditorTestContext, assert_state_with_diff};
1349    use git::status::{UnmergedStatus, UnmergedStatusCode};
1350    use gpui::TestAppContext;
1351    use project::FakeFs;
1352    use serde_json::json;
1353    use settings::SettingsStore;
1354    use std::path::Path;
1355    use unindent::Unindent as _;
1356    use util::{path, rel_path::rel_path};
1357
1358    use super::*;
1359
1360    #[ctor::ctor]
1361    fn init_logger() {
1362        zlog::init_test();
1363    }
1364
1365    fn init_test(cx: &mut TestAppContext) {
1366        cx.update(|cx| {
1367            let store = SettingsStore::test(cx);
1368            cx.set_global(store);
1369            theme::init(theme::LoadThemes::JustBase, cx);
1370            language::init(cx);
1371            Project::init_settings(cx);
1372            workspace::init_settings(cx);
1373            editor::init(cx);
1374            crate::init(cx);
1375        });
1376    }
1377
1378    #[gpui::test]
1379    async fn test_save_after_restore(cx: &mut TestAppContext) {
1380        init_test(cx);
1381
1382        let fs = FakeFs::new(cx.executor());
1383        fs.insert_tree(
1384            path!("/project"),
1385            json!({
1386                ".git": {},
1387                "foo.txt": "FOO\n",
1388            }),
1389        )
1390        .await;
1391        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1392        let (workspace, cx) =
1393            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1394        let diff = cx.new_window_entity(|window, cx| {
1395            ProjectDiff::new(project.clone(), workspace, window, cx)
1396        });
1397        cx.run_until_parked();
1398
1399        fs.set_head_for_repo(
1400            path!("/project/.git").as_ref(),
1401            &[("foo.txt", "foo\n".into())],
1402            "deadbeef",
1403        );
1404        fs.set_index_for_repo(
1405            path!("/project/.git").as_ref(),
1406            &[("foo.txt", "foo\n".into())],
1407        );
1408        cx.run_until_parked();
1409
1410        let editor = diff.read_with(cx, |diff, _| diff.editor.clone());
1411        assert_state_with_diff(
1412            &editor,
1413            cx,
1414            &"
1415                - foo
1416                + ˇFOO
1417            "
1418            .unindent(),
1419        );
1420
1421        editor.update_in(cx, |editor, window, cx| {
1422            editor.git_restore(&Default::default(), window, cx);
1423        });
1424        cx.run_until_parked();
1425
1426        assert_state_with_diff(&editor, cx, &"ˇ".unindent());
1427
1428        let text = String::from_utf8(fs.read_file_sync("/project/foo.txt").unwrap()).unwrap();
1429        assert_eq!(text, "foo\n");
1430    }
1431
1432    #[gpui::test]
1433    async fn test_scroll_to_beginning_with_deletion(cx: &mut TestAppContext) {
1434        init_test(cx);
1435
1436        let fs = FakeFs::new(cx.executor());
1437        fs.insert_tree(
1438            path!("/project"),
1439            json!({
1440                ".git": {},
1441                "bar": "BAR\n",
1442                "foo": "FOO\n",
1443            }),
1444        )
1445        .await;
1446        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1447        let (workspace, cx) =
1448            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1449        let diff = cx.new_window_entity(|window, cx| {
1450            ProjectDiff::new(project.clone(), workspace, window, cx)
1451        });
1452        cx.run_until_parked();
1453
1454        fs.set_head_and_index_for_repo(
1455            path!("/project/.git").as_ref(),
1456            &[("bar", "bar\n".into()), ("foo", "foo\n".into())],
1457        );
1458        cx.run_until_parked();
1459
1460        let editor = cx.update_window_entity(&diff, |diff, window, cx| {
1461            diff.move_to_path(
1462                PathKey::with_sort_prefix(TRACKED_SORT_PREFIX, rel_path("foo").into_arc()),
1463                window,
1464                cx,
1465            );
1466            diff.editor.clone()
1467        });
1468        assert_state_with_diff(
1469            &editor,
1470            cx,
1471            &"
1472                - bar
1473                + BAR
1474
1475                - ˇfoo
1476                + FOO
1477            "
1478            .unindent(),
1479        );
1480
1481        let editor = cx.update_window_entity(&diff, |diff, window, cx| {
1482            diff.move_to_path(
1483                PathKey::with_sort_prefix(TRACKED_SORT_PREFIX, rel_path("bar").into_arc()),
1484                window,
1485                cx,
1486            );
1487            diff.editor.clone()
1488        });
1489        assert_state_with_diff(
1490            &editor,
1491            cx,
1492            &"
1493                - ˇbar
1494                + BAR
1495
1496                - foo
1497                + FOO
1498            "
1499            .unindent(),
1500        );
1501    }
1502
1503    #[gpui::test]
1504    async fn test_hunks_after_restore_then_modify(cx: &mut TestAppContext) {
1505        init_test(cx);
1506
1507        let fs = FakeFs::new(cx.executor());
1508        fs.insert_tree(
1509            path!("/project"),
1510            json!({
1511                ".git": {},
1512                "foo": "modified\n",
1513            }),
1514        )
1515        .await;
1516        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1517        let (workspace, cx) =
1518            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1519        let buffer = project
1520            .update(cx, |project, cx| {
1521                project.open_local_buffer(path!("/project/foo"), cx)
1522            })
1523            .await
1524            .unwrap();
1525        let buffer_editor = cx.new_window_entity(|window, cx| {
1526            Editor::for_buffer(buffer, Some(project.clone()), window, cx)
1527        });
1528        let diff = cx.new_window_entity(|window, cx| {
1529            ProjectDiff::new(project.clone(), workspace, window, cx)
1530        });
1531        cx.run_until_parked();
1532
1533        fs.set_head_for_repo(
1534            path!("/project/.git").as_ref(),
1535            &[("foo", "original\n".into())],
1536            "deadbeef",
1537        );
1538        cx.run_until_parked();
1539
1540        let diff_editor = diff.read_with(cx, |diff, _| diff.editor.clone());
1541
1542        assert_state_with_diff(
1543            &diff_editor,
1544            cx,
1545            &"
1546                - original
1547                + ˇmodified
1548            "
1549            .unindent(),
1550        );
1551
1552        let prev_buffer_hunks =
1553            cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
1554                let snapshot = buffer_editor.snapshot(window, cx);
1555                let snapshot = &snapshot.buffer_snapshot();
1556                let prev_buffer_hunks = buffer_editor
1557                    .diff_hunks_in_ranges(&[editor::Anchor::min()..editor::Anchor::max()], snapshot)
1558                    .collect::<Vec<_>>();
1559                buffer_editor.git_restore(&Default::default(), window, cx);
1560                prev_buffer_hunks
1561            });
1562        assert_eq!(prev_buffer_hunks.len(), 1);
1563        cx.run_until_parked();
1564
1565        let new_buffer_hunks =
1566            cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
1567                let snapshot = buffer_editor.snapshot(window, cx);
1568                let snapshot = &snapshot.buffer_snapshot();
1569                buffer_editor
1570                    .diff_hunks_in_ranges(&[editor::Anchor::min()..editor::Anchor::max()], snapshot)
1571                    .collect::<Vec<_>>()
1572            });
1573        assert_eq!(new_buffer_hunks.as_slice(), &[]);
1574
1575        cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
1576            buffer_editor.set_text("different\n", window, cx);
1577            buffer_editor.save(
1578                SaveOptions {
1579                    format: false,
1580                    autosave: false,
1581                },
1582                project.clone(),
1583                window,
1584                cx,
1585            )
1586        })
1587        .await
1588        .unwrap();
1589
1590        cx.run_until_parked();
1591
1592        cx.update_window_entity(&buffer_editor, |buffer_editor, window, cx| {
1593            buffer_editor.expand_all_diff_hunks(&Default::default(), window, cx);
1594        });
1595
1596        assert_state_with_diff(
1597            &buffer_editor,
1598            cx,
1599            &"
1600                - original
1601                + different
1602                  ˇ"
1603            .unindent(),
1604        );
1605
1606        assert_state_with_diff(
1607            &diff_editor,
1608            cx,
1609            &"
1610                - original
1611                + different
1612                  ˇ"
1613            .unindent(),
1614        );
1615    }
1616
1617    use crate::{
1618        conflict_view::resolve_conflict,
1619        project_diff::{self, ProjectDiff},
1620    };
1621
1622    #[cfg_attr(windows, ignore = "currently fails on windows")]
1623    #[gpui::test]
1624    async fn test_go_to_prev_hunk_multibuffer(cx: &mut TestAppContext) {
1625        init_test(cx);
1626
1627        let fs = FakeFs::new(cx.executor());
1628        fs.insert_tree(
1629            "/a",
1630            json!({
1631                ".git": {},
1632                "a.txt": "created\n",
1633                "b.txt": "really changed\n",
1634                "c.txt": "unchanged\n"
1635            }),
1636        )
1637        .await;
1638
1639        fs.set_head_and_index_for_repo(
1640            Path::new("/a/.git"),
1641            &[
1642                ("b.txt", "before\n".to_string()),
1643                ("c.txt", "unchanged\n".to_string()),
1644                ("d.txt", "deleted\n".to_string()),
1645            ],
1646        );
1647
1648        let project = Project::test(fs, [Path::new("/a")], cx).await;
1649        let (workspace, cx) =
1650            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
1651
1652        cx.run_until_parked();
1653
1654        cx.focus(&workspace);
1655        cx.update(|window, cx| {
1656            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
1657        });
1658
1659        cx.run_until_parked();
1660
1661        let item = workspace.update(cx, |workspace, cx| {
1662            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
1663        });
1664        cx.focus(&item);
1665        let editor = item.read_with(cx, |item, _| item.editor.clone());
1666
1667        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
1668
1669        cx.assert_excerpts_with_selections(indoc!(
1670            "
1671            [EXCERPT]
1672            before
1673            really changed
1674            [EXCERPT]
1675            [FOLDED]
1676            [EXCERPT]
1677            ˇcreated
1678        "
1679        ));
1680
1681        cx.dispatch_action(editor::actions::GoToPreviousHunk);
1682
1683        cx.assert_excerpts_with_selections(indoc!(
1684            "
1685            [EXCERPT]
1686            before
1687            really changed
1688            [EXCERPT]
1689            ˇ[FOLDED]
1690            [EXCERPT]
1691            created
1692        "
1693        ));
1694
1695        cx.dispatch_action(editor::actions::GoToPreviousHunk);
1696
1697        cx.assert_excerpts_with_selections(indoc!(
1698            "
1699            [EXCERPT]
1700            ˇbefore
1701            really changed
1702            [EXCERPT]
1703            [FOLDED]
1704            [EXCERPT]
1705            created
1706        "
1707        ));
1708    }
1709
1710    #[cfg_attr(windows, ignore = "currently fails on windows")]
1711    #[gpui::test]
1712    async fn test_excerpts_splitting_after_restoring_the_middle_excerpt(cx: &mut TestAppContext) {
1713        init_test(cx);
1714
1715        let git_contents = indoc! {r#"
1716            #[rustfmt::skip]
1717            fn main() {
1718                let x = 0.0; // this line will be removed
1719                // 1
1720                // 2
1721                // 3
1722                let y = 0.0; // this line will be removed
1723                // 1
1724                // 2
1725                // 3
1726                let arr = [
1727                    0.0, // this line will be removed
1728                    0.0, // this line will be removed
1729                    0.0, // this line will be removed
1730                    0.0, // this line will be removed
1731                ];
1732            }
1733        "#};
1734        let buffer_contents = indoc! {"
1735            #[rustfmt::skip]
1736            fn main() {
1737                // 1
1738                // 2
1739                // 3
1740                // 1
1741                // 2
1742                // 3
1743                let arr = [
1744                ];
1745            }
1746        "};
1747
1748        let fs = FakeFs::new(cx.executor());
1749        fs.insert_tree(
1750            "/a",
1751            json!({
1752                ".git": {},
1753                "main.rs": buffer_contents,
1754            }),
1755        )
1756        .await;
1757
1758        fs.set_head_and_index_for_repo(
1759            Path::new("/a/.git"),
1760            &[("main.rs", git_contents.to_owned())],
1761        );
1762
1763        let project = Project::test(fs, [Path::new("/a")], cx).await;
1764        let (workspace, cx) =
1765            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
1766
1767        cx.run_until_parked();
1768
1769        cx.focus(&workspace);
1770        cx.update(|window, cx| {
1771            window.dispatch_action(project_diff::Diff.boxed_clone(), cx);
1772        });
1773
1774        cx.run_until_parked();
1775
1776        let item = workspace.update(cx, |workspace, cx| {
1777            workspace.active_item_as::<ProjectDiff>(cx).unwrap()
1778        });
1779        cx.focus(&item);
1780        let editor = item.read_with(cx, |item, _| item.editor.clone());
1781
1782        let mut cx = EditorTestContext::for_editor_in(editor, cx).await;
1783
1784        cx.assert_excerpts_with_selections(&format!("[EXCERPT]\nˇ{git_contents}"));
1785
1786        cx.dispatch_action(editor::actions::GoToHunk);
1787        cx.dispatch_action(editor::actions::GoToHunk);
1788        cx.dispatch_action(git::Restore);
1789        cx.dispatch_action(editor::actions::MoveToBeginning);
1790
1791        cx.assert_excerpts_with_selections(&format!("[EXCERPT]\nˇ{git_contents}"));
1792    }
1793
1794    #[gpui::test]
1795    async fn test_saving_resolved_conflicts(cx: &mut TestAppContext) {
1796        init_test(cx);
1797
1798        let fs = FakeFs::new(cx.executor());
1799        fs.insert_tree(
1800            path!("/project"),
1801            json!({
1802                ".git": {},
1803                "foo": "<<<<<<< x\nours\n=======\ntheirs\n>>>>>>> y\n",
1804            }),
1805        )
1806        .await;
1807        fs.set_status_for_repo(
1808            Path::new(path!("/project/.git")),
1809            &[(
1810                "foo",
1811                UnmergedStatus {
1812                    first_head: UnmergedStatusCode::Updated,
1813                    second_head: UnmergedStatusCode::Updated,
1814                }
1815                .into(),
1816            )],
1817        );
1818        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1819        let (workspace, cx) =
1820            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1821        let diff = cx.new_window_entity(|window, cx| {
1822            ProjectDiff::new(project.clone(), workspace, window, cx)
1823        });
1824        cx.run_until_parked();
1825
1826        cx.update(|window, cx| {
1827            let editor = diff.read(cx).editor.clone();
1828            let excerpt_ids = editor.read(cx).buffer().read(cx).excerpt_ids();
1829            assert_eq!(excerpt_ids.len(), 1);
1830            let excerpt_id = excerpt_ids[0];
1831            let buffer = editor
1832                .read(cx)
1833                .buffer()
1834                .read(cx)
1835                .all_buffers()
1836                .into_iter()
1837                .next()
1838                .unwrap();
1839            let buffer_id = buffer.read(cx).remote_id();
1840            let conflict_set = diff
1841                .read(cx)
1842                .editor
1843                .read(cx)
1844                .addon::<ConflictAddon>()
1845                .unwrap()
1846                .conflict_set(buffer_id)
1847                .unwrap();
1848            assert!(conflict_set.read(cx).has_conflict);
1849            let snapshot = conflict_set.read(cx).snapshot();
1850            assert_eq!(snapshot.conflicts.len(), 1);
1851
1852            let ours_range = snapshot.conflicts[0].ours.clone();
1853
1854            resolve_conflict(
1855                editor.downgrade(),
1856                excerpt_id,
1857                snapshot.conflicts[0].clone(),
1858                vec![ours_range],
1859                window,
1860                cx,
1861            )
1862        })
1863        .await;
1864
1865        let contents = fs.read_file_sync(path!("/project/foo")).unwrap();
1866        let contents = String::from_utf8(contents).unwrap();
1867        assert_eq!(contents, "ours\n");
1868    }
1869
1870    #[gpui::test]
1871    async fn test_new_hunk_in_modified_file(cx: &mut TestAppContext) {
1872        init_test(cx);
1873
1874        let fs = FakeFs::new(cx.executor());
1875        fs.insert_tree(
1876            path!("/project"),
1877            json!({
1878                ".git": {},
1879                "foo.txt": "
1880                    one
1881                    two
1882                    three
1883                    four
1884                    five
1885                    six
1886                    seven
1887                    eight
1888                    nine
1889                    ten
1890                    ELEVEN
1891                    twelve
1892                ".unindent()
1893            }),
1894        )
1895        .await;
1896        let project = Project::test(fs.clone(), [path!("/project").as_ref()], cx).await;
1897        let (workspace, cx) =
1898            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1899        let diff = cx.new_window_entity(|window, cx| {
1900            ProjectDiff::new(project.clone(), workspace, window, cx)
1901        });
1902        cx.run_until_parked();
1903
1904        fs.set_head_and_index_for_repo(
1905            Path::new(path!("/project/.git")),
1906            &[(
1907                "foo.txt",
1908                "
1909                    one
1910                    two
1911                    three
1912                    four
1913                    five
1914                    six
1915                    seven
1916                    eight
1917                    nine
1918                    ten
1919                    eleven
1920                    twelve
1921                "
1922                .unindent(),
1923            )],
1924        );
1925        cx.run_until_parked();
1926
1927        let editor = diff.read_with(cx, |diff, _| diff.editor.clone());
1928        assert_state_with_diff(
1929            &editor,
1930            cx,
1931            &"
1932                  ˇnine
1933                  ten
1934                - eleven
1935                + ELEVEN
1936                  twelve
1937            "
1938            .unindent(),
1939        );
1940
1941        let buffer = project
1942            .update(cx, |project, cx| {
1943                project.open_local_buffer(path!("/project/foo.txt"), cx)
1944            })
1945            .await
1946            .unwrap();
1947        buffer.update(cx, |buffer, cx| {
1948            buffer.edit_via_marked_text(
1949                &"
1950                    one
1951                    «TWO»
1952                    three
1953                    four
1954                    five
1955                    six
1956                    seven
1957                    eight
1958                    nine
1959                    ten
1960                    ELEVEN
1961                    twelve
1962                "
1963                .unindent(),
1964                None,
1965                cx,
1966            );
1967        });
1968        project
1969            .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
1970            .await
1971            .unwrap();
1972        cx.run_until_parked();
1973
1974        assert_state_with_diff(
1975            &editor,
1976            cx,
1977            &"
1978                  one
1979                - two
1980                + TWO
1981                  three
1982                  four
1983                  five
1984                  ˇnine
1985                  ten
1986                - eleven
1987                + ELEVEN
1988                  twelve
1989            "
1990            .unindent(),
1991        );
1992    }
1993}