project_diff.rs

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