agent_diff.rs

   1use crate::{Keep, KeepAll, OpenAgentDiff, Reject, RejectAll, Thread, ThreadEvent};
   2use anyhow::Result;
   3use assistant_settings::AssistantSettings;
   4use buffer_diff::DiffHunkStatus;
   5use collections::{HashMap, HashSet};
   6use editor::{
   7    Direction, Editor, EditorEvent, EditorSettings, MultiBuffer, MultiBufferSnapshot, ToPoint,
   8    actions::{GoToHunk, GoToPreviousHunk},
   9    scroll::Autoscroll,
  10};
  11use gpui::{
  12    Action, Animation, AnimationExt, AnyElement, AnyView, App, AppContext, Empty, Entity,
  13    EventEmitter, FocusHandle, Focusable, Global, SharedString, Subscription, Task, Transformation,
  14    WeakEntity, Window, percentage, prelude::*,
  15};
  16
  17use language::{Buffer, Capability, DiskState, OffsetRangeExt, Point};
  18use language_model::StopReason;
  19use multi_buffer::PathKey;
  20use project::{Project, ProjectItem, ProjectPath};
  21use settings::{Settings, SettingsStore};
  22use std::{
  23    any::{Any, TypeId},
  24    collections::hash_map::Entry,
  25    ops::Range,
  26    sync::Arc,
  27    time::Duration,
  28};
  29use ui::{IconButtonShape, KeyBinding, Tooltip, prelude::*, vertical_divider};
  30use util::ResultExt;
  31use workspace::{
  32    Item, ItemHandle, ItemNavHistory, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView,
  33    Workspace,
  34    item::{BreadcrumbText, ItemEvent, TabContentParams},
  35    searchable::SearchableItemHandle,
  36};
  37use zed_actions::assistant::ToggleFocus;
  38
  39pub struct AgentDiffPane {
  40    multibuffer: Entity<MultiBuffer>,
  41    editor: Entity<Editor>,
  42    thread: Entity<Thread>,
  43    focus_handle: FocusHandle,
  44    workspace: WeakEntity<Workspace>,
  45    title: SharedString,
  46    _subscriptions: Vec<Subscription>,
  47}
  48
  49impl AgentDiffPane {
  50    pub fn deploy(
  51        thread: Entity<Thread>,
  52        workspace: WeakEntity<Workspace>,
  53        window: &mut Window,
  54        cx: &mut App,
  55    ) -> Result<Entity<Self>> {
  56        workspace.update(cx, |workspace, cx| {
  57            Self::deploy_in_workspace(thread, workspace, window, cx)
  58        })
  59    }
  60
  61    pub fn deploy_in_workspace(
  62        thread: Entity<Thread>,
  63        workspace: &mut Workspace,
  64        window: &mut Window,
  65        cx: &mut Context<Workspace>,
  66    ) -> Entity<Self> {
  67        let existing_diff = workspace
  68            .items_of_type::<AgentDiffPane>(cx)
  69            .find(|diff| diff.read(cx).thread == thread);
  70        if let Some(existing_diff) = existing_diff {
  71            workspace.activate_item(&existing_diff, true, true, window, cx);
  72            existing_diff
  73        } else {
  74            let agent_diff = cx
  75                .new(|cx| AgentDiffPane::new(thread.clone(), workspace.weak_handle(), window, cx));
  76            workspace.add_item_to_center(Box::new(agent_diff.clone()), window, cx);
  77            agent_diff
  78        }
  79    }
  80
  81    pub fn new(
  82        thread: Entity<Thread>,
  83        workspace: WeakEntity<Workspace>,
  84        window: &mut Window,
  85        cx: &mut Context<Self>,
  86    ) -> Self {
  87        let focus_handle = cx.focus_handle();
  88        let multibuffer = cx.new(|_| MultiBuffer::new(Capability::ReadWrite));
  89
  90        let project = thread.read(cx).project().clone();
  91        let editor = cx.new(|cx| {
  92            let mut editor =
  93                Editor::for_multibuffer(multibuffer.clone(), Some(project.clone()), window, cx);
  94            editor.disable_inline_diagnostics();
  95            editor.set_expand_all_diff_hunks(cx);
  96            editor.set_render_diff_hunk_controls(diff_hunk_controls(&thread), cx);
  97            editor.register_addon(AgentDiffAddon);
  98            editor
  99        });
 100
 101        let action_log = thread.read(cx).action_log().clone();
 102        let mut this = Self {
 103            _subscriptions: vec![
 104                cx.observe_in(&action_log, window, |this, _action_log, window, cx| {
 105                    this.update_excerpts(window, cx)
 106                }),
 107                cx.subscribe(&thread, |this, _thread, event, cx| {
 108                    this.handle_thread_event(event, cx)
 109                }),
 110            ],
 111            title: SharedString::default(),
 112            multibuffer,
 113            editor,
 114            thread,
 115            focus_handle,
 116            workspace,
 117        };
 118        this.update_excerpts(window, cx);
 119        this.update_title(cx);
 120        this
 121    }
 122
 123    fn update_excerpts(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 124        let thread = self.thread.read(cx);
 125        let changed_buffers = thread.action_log().read(cx).changed_buffers(cx);
 126        let mut paths_to_delete = self.multibuffer.read(cx).paths().collect::<HashSet<_>>();
 127
 128        for (buffer, diff_handle) in changed_buffers {
 129            if buffer.read(cx).file().is_none() {
 130                continue;
 131            }
 132
 133            let path_key = PathKey::for_buffer(&buffer, cx);
 134            paths_to_delete.remove(&path_key);
 135
 136            let snapshot = buffer.read(cx).snapshot();
 137            let diff = diff_handle.read(cx);
 138
 139            let diff_hunk_ranges = diff
 140                .hunks_intersecting_range(
 141                    language::Anchor::MIN..language::Anchor::MAX,
 142                    &snapshot,
 143                    cx,
 144                )
 145                .map(|diff_hunk| diff_hunk.buffer_range.to_point(&snapshot))
 146                .collect::<Vec<_>>();
 147
 148            let (was_empty, is_excerpt_newly_added) =
 149                self.multibuffer.update(cx, |multibuffer, cx| {
 150                    let was_empty = multibuffer.is_empty();
 151                    let (_, is_excerpt_newly_added) = multibuffer.set_excerpts_for_path(
 152                        path_key.clone(),
 153                        buffer.clone(),
 154                        diff_hunk_ranges,
 155                        editor::DEFAULT_MULTIBUFFER_CONTEXT,
 156                        cx,
 157                    );
 158                    multibuffer.add_diff(diff_handle, cx);
 159                    (was_empty, is_excerpt_newly_added)
 160                });
 161
 162            self.editor.update(cx, |editor, cx| {
 163                if was_empty {
 164                    let first_hunk = editor
 165                        .diff_hunks_in_ranges(
 166                            &[editor::Anchor::min()..editor::Anchor::max()],
 167                            &self.multibuffer.read(cx).read(cx),
 168                        )
 169                        .next();
 170
 171                    if let Some(first_hunk) = first_hunk {
 172                        let first_hunk_start = first_hunk.multi_buffer_range().start;
 173                        editor.change_selections(
 174                            Some(Autoscroll::fit()),
 175                            window,
 176                            cx,
 177                            |selections| {
 178                                selections
 179                                    .select_anchor_ranges([first_hunk_start..first_hunk_start]);
 180                            },
 181                        )
 182                    }
 183                }
 184
 185                if is_excerpt_newly_added
 186                    && buffer
 187                        .read(cx)
 188                        .file()
 189                        .map_or(false, |file| file.disk_state() == DiskState::Deleted)
 190                {
 191                    editor.fold_buffer(snapshot.text.remote_id(), cx)
 192                }
 193            });
 194        }
 195
 196        self.multibuffer.update(cx, |multibuffer, cx| {
 197            for path in paths_to_delete {
 198                multibuffer.remove_excerpts_for_path(path, cx);
 199            }
 200        });
 201
 202        if self.multibuffer.read(cx).is_empty()
 203            && self
 204                .editor
 205                .read(cx)
 206                .focus_handle(cx)
 207                .contains_focused(window, cx)
 208        {
 209            self.focus_handle.focus(window);
 210        } else if self.focus_handle.is_focused(window) && !self.multibuffer.read(cx).is_empty() {
 211            self.editor.update(cx, |editor, cx| {
 212                editor.focus_handle(cx).focus(window);
 213            });
 214        }
 215    }
 216
 217    fn update_title(&mut self, cx: &mut Context<Self>) {
 218        let new_title = self
 219            .thread
 220            .read(cx)
 221            .summary()
 222            .unwrap_or("Agent Changes".into());
 223        if new_title != self.title {
 224            self.title = new_title;
 225            cx.emit(EditorEvent::TitleChanged);
 226        }
 227    }
 228
 229    fn handle_thread_event(&mut self, event: &ThreadEvent, cx: &mut Context<Self>) {
 230        match event {
 231            ThreadEvent::SummaryGenerated => self.update_title(cx),
 232            _ => {}
 233        }
 234    }
 235
 236    pub fn move_to_path(&self, path_key: PathKey, window: &mut Window, cx: &mut App) {
 237        if let Some(position) = self.multibuffer.read(cx).location_for_path(&path_key, cx) {
 238            self.editor.update(cx, |editor, cx| {
 239                let first_hunk = editor
 240                    .diff_hunks_in_ranges(
 241                        &[position..editor::Anchor::max()],
 242                        &self.multibuffer.read(cx).read(cx),
 243                    )
 244                    .next();
 245
 246                if let Some(first_hunk) = first_hunk {
 247                    let first_hunk_start = first_hunk.multi_buffer_range().start;
 248                    editor.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
 249                        selections.select_anchor_ranges([first_hunk_start..first_hunk_start]);
 250                    })
 251                }
 252            });
 253        }
 254    }
 255
 256    fn keep(&mut self, _: &Keep, window: &mut Window, cx: &mut Context<Self>) {
 257        self.editor.update(cx, |editor, cx| {
 258            let snapshot = editor.buffer().read(cx).snapshot(cx);
 259            keep_edits_in_selection(editor, &snapshot, &self.thread, window, cx);
 260        });
 261    }
 262
 263    fn reject(&mut self, _: &Reject, window: &mut Window, cx: &mut Context<Self>) {
 264        self.editor.update(cx, |editor, cx| {
 265            let snapshot = editor.buffer().read(cx).snapshot(cx);
 266            reject_edits_in_selection(editor, &snapshot, &self.thread, window, cx);
 267        });
 268    }
 269
 270    fn reject_all(&mut self, _: &RejectAll, window: &mut Window, cx: &mut Context<Self>) {
 271        self.editor.update(cx, |editor, cx| {
 272            let snapshot = editor.buffer().read(cx).snapshot(cx);
 273            reject_edits_in_ranges(
 274                editor,
 275                &snapshot,
 276                &self.thread,
 277                vec![editor::Anchor::min()..editor::Anchor::max()],
 278                window,
 279                cx,
 280            );
 281        });
 282    }
 283
 284    fn keep_all(&mut self, _: &KeepAll, _window: &mut Window, cx: &mut Context<Self>) {
 285        self.thread
 286            .update(cx, |thread, cx| thread.keep_all_edits(cx));
 287    }
 288}
 289
 290fn keep_edits_in_selection(
 291    editor: &mut Editor,
 292    buffer_snapshot: &MultiBufferSnapshot,
 293    thread: &Entity<Thread>,
 294    window: &mut Window,
 295    cx: &mut Context<Editor>,
 296) {
 297    let ranges = editor
 298        .selections
 299        .disjoint_anchor_ranges()
 300        .collect::<Vec<_>>();
 301
 302    keep_edits_in_ranges(editor, buffer_snapshot, &thread, ranges, window, cx)
 303}
 304
 305fn reject_edits_in_selection(
 306    editor: &mut Editor,
 307    buffer_snapshot: &MultiBufferSnapshot,
 308    thread: &Entity<Thread>,
 309    window: &mut Window,
 310    cx: &mut Context<Editor>,
 311) {
 312    let ranges = editor
 313        .selections
 314        .disjoint_anchor_ranges()
 315        .collect::<Vec<_>>();
 316    reject_edits_in_ranges(editor, buffer_snapshot, &thread, ranges, window, cx)
 317}
 318
 319fn keep_edits_in_ranges(
 320    editor: &mut Editor,
 321    buffer_snapshot: &MultiBufferSnapshot,
 322    thread: &Entity<Thread>,
 323    ranges: Vec<Range<editor::Anchor>>,
 324    window: &mut Window,
 325    cx: &mut Context<Editor>,
 326) {
 327    let diff_hunks_in_ranges = editor
 328        .diff_hunks_in_ranges(&ranges, buffer_snapshot)
 329        .collect::<Vec<_>>();
 330
 331    update_editor_selection(editor, buffer_snapshot, &diff_hunks_in_ranges, window, cx);
 332
 333    let multibuffer = editor.buffer().clone();
 334    for hunk in &diff_hunks_in_ranges {
 335        let buffer = multibuffer.read(cx).buffer(hunk.buffer_id);
 336        if let Some(buffer) = buffer {
 337            thread.update(cx, |thread, cx| {
 338                thread.keep_edits_in_range(buffer, hunk.buffer_range.clone(), cx)
 339            });
 340        }
 341    }
 342}
 343
 344fn reject_edits_in_ranges(
 345    editor: &mut Editor,
 346    buffer_snapshot: &MultiBufferSnapshot,
 347    thread: &Entity<Thread>,
 348    ranges: Vec<Range<editor::Anchor>>,
 349    window: &mut Window,
 350    cx: &mut Context<Editor>,
 351) {
 352    let diff_hunks_in_ranges = editor
 353        .diff_hunks_in_ranges(&ranges, buffer_snapshot)
 354        .collect::<Vec<_>>();
 355
 356    update_editor_selection(editor, buffer_snapshot, &diff_hunks_in_ranges, window, cx);
 357
 358    let multibuffer = editor.buffer().clone();
 359
 360    let mut ranges_by_buffer = HashMap::default();
 361    for hunk in &diff_hunks_in_ranges {
 362        let buffer = multibuffer.read(cx).buffer(hunk.buffer_id);
 363        if let Some(buffer) = buffer {
 364            ranges_by_buffer
 365                .entry(buffer.clone())
 366                .or_insert_with(Vec::new)
 367                .push(hunk.buffer_range.clone());
 368        }
 369    }
 370
 371    for (buffer, ranges) in ranges_by_buffer {
 372        thread
 373            .update(cx, |thread, cx| {
 374                thread.reject_edits_in_ranges(buffer, ranges, cx)
 375            })
 376            .detach_and_log_err(cx);
 377    }
 378}
 379
 380fn update_editor_selection(
 381    editor: &mut Editor,
 382    buffer_snapshot: &MultiBufferSnapshot,
 383    diff_hunks: &[multi_buffer::MultiBufferDiffHunk],
 384    window: &mut Window,
 385    cx: &mut Context<Editor>,
 386) {
 387    let newest_cursor = editor.selections.newest::<Point>(cx).head();
 388
 389    if !diff_hunks.iter().any(|hunk| {
 390        hunk.row_range
 391            .contains(&multi_buffer::MultiBufferRow(newest_cursor.row))
 392    }) {
 393        return;
 394    }
 395
 396    let target_hunk = {
 397        diff_hunks
 398            .last()
 399            .and_then(|last_kept_hunk| {
 400                let last_kept_hunk_end = last_kept_hunk.multi_buffer_range().end;
 401                editor
 402                    .diff_hunks_in_ranges(
 403                        &[last_kept_hunk_end..editor::Anchor::max()],
 404                        buffer_snapshot,
 405                    )
 406                    .skip(1)
 407                    .next()
 408            })
 409            .or_else(|| {
 410                let first_kept_hunk = diff_hunks.first()?;
 411                let first_kept_hunk_start = first_kept_hunk.multi_buffer_range().start;
 412                editor
 413                    .diff_hunks_in_ranges(
 414                        &[editor::Anchor::min()..first_kept_hunk_start],
 415                        buffer_snapshot,
 416                    )
 417                    .next()
 418            })
 419    };
 420
 421    if let Some(target_hunk) = target_hunk {
 422        editor.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
 423            let next_hunk_start = target_hunk.multi_buffer_range().start;
 424            selections.select_anchor_ranges([next_hunk_start..next_hunk_start]);
 425        })
 426    }
 427}
 428
 429impl EventEmitter<EditorEvent> for AgentDiffPane {}
 430
 431impl Focusable for AgentDiffPane {
 432    fn focus_handle(&self, cx: &App) -> FocusHandle {
 433        if self.multibuffer.read(cx).is_empty() {
 434            self.focus_handle.clone()
 435        } else {
 436            self.editor.focus_handle(cx)
 437        }
 438    }
 439}
 440
 441impl Item for AgentDiffPane {
 442    type Event = EditorEvent;
 443
 444    fn tab_icon(&self, _window: &Window, _cx: &App) -> Option<Icon> {
 445        Some(Icon::new(IconName::ZedAssistant).color(Color::Muted))
 446    }
 447
 448    fn to_item_events(event: &EditorEvent, f: impl FnMut(ItemEvent)) {
 449        Editor::to_item_events(event, f)
 450    }
 451
 452    fn deactivated(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 453        self.editor
 454            .update(cx, |editor, cx| editor.deactivated(window, cx));
 455    }
 456
 457    fn navigate(
 458        &mut self,
 459        data: Box<dyn Any>,
 460        window: &mut Window,
 461        cx: &mut Context<Self>,
 462    ) -> bool {
 463        self.editor
 464            .update(cx, |editor, cx| editor.navigate(data, window, cx))
 465    }
 466
 467    fn tab_tooltip_text(&self, _: &App) -> Option<SharedString> {
 468        Some("Agent Diff".into())
 469    }
 470
 471    fn tab_content(&self, params: TabContentParams, _window: &Window, cx: &App) -> AnyElement {
 472        let summary = self
 473            .thread
 474            .read(cx)
 475            .summary()
 476            .unwrap_or("Agent Changes".into());
 477        Label::new(format!("Review: {}", summary))
 478            .color(if params.selected {
 479                Color::Default
 480            } else {
 481                Color::Muted
 482            })
 483            .into_any_element()
 484    }
 485
 486    fn telemetry_event_text(&self) -> Option<&'static str> {
 487        Some("Assistant Diff Opened")
 488    }
 489
 490    fn as_searchable(&self, _: &Entity<Self>) -> Option<Box<dyn SearchableItemHandle>> {
 491        Some(Box::new(self.editor.clone()))
 492    }
 493
 494    fn for_each_project_item(
 495        &self,
 496        cx: &App,
 497        f: &mut dyn FnMut(gpui::EntityId, &dyn project::ProjectItem),
 498    ) {
 499        self.editor.for_each_project_item(cx, f)
 500    }
 501
 502    fn is_singleton(&self, _: &App) -> bool {
 503        false
 504    }
 505
 506    fn set_nav_history(
 507        &mut self,
 508        nav_history: ItemNavHistory,
 509        _: &mut Window,
 510        cx: &mut Context<Self>,
 511    ) {
 512        self.editor.update(cx, |editor, _| {
 513            editor.set_nav_history(Some(nav_history));
 514        });
 515    }
 516
 517    fn clone_on_split(
 518        &self,
 519        _workspace_id: Option<workspace::WorkspaceId>,
 520        window: &mut Window,
 521        cx: &mut Context<Self>,
 522    ) -> Option<Entity<Self>>
 523    where
 524        Self: Sized,
 525    {
 526        Some(cx.new(|cx| Self::new(self.thread.clone(), self.workspace.clone(), window, cx)))
 527    }
 528
 529    fn is_dirty(&self, cx: &App) -> bool {
 530        self.multibuffer.read(cx).is_dirty(cx)
 531    }
 532
 533    fn has_conflict(&self, cx: &App) -> bool {
 534        self.multibuffer.read(cx).has_conflict(cx)
 535    }
 536
 537    fn can_save(&self, _: &App) -> bool {
 538        true
 539    }
 540
 541    fn save(
 542        &mut self,
 543        format: bool,
 544        project: Entity<Project>,
 545        window: &mut Window,
 546        cx: &mut Context<Self>,
 547    ) -> Task<Result<()>> {
 548        self.editor.save(format, project, window, cx)
 549    }
 550
 551    fn save_as(
 552        &mut self,
 553        _: Entity<Project>,
 554        _: ProjectPath,
 555        _window: &mut Window,
 556        _: &mut Context<Self>,
 557    ) -> Task<Result<()>> {
 558        unreachable!()
 559    }
 560
 561    fn reload(
 562        &mut self,
 563        project: Entity<Project>,
 564        window: &mut Window,
 565        cx: &mut Context<Self>,
 566    ) -> Task<Result<()>> {
 567        self.editor.reload(project, window, cx)
 568    }
 569
 570    fn act_as_type<'a>(
 571        &'a self,
 572        type_id: TypeId,
 573        self_handle: &'a Entity<Self>,
 574        _: &'a App,
 575    ) -> Option<AnyView> {
 576        if type_id == TypeId::of::<Self>() {
 577            Some(self_handle.to_any())
 578        } else if type_id == TypeId::of::<Editor>() {
 579            Some(self.editor.to_any())
 580        } else {
 581            None
 582        }
 583    }
 584
 585    fn breadcrumb_location(&self, _: &App) -> ToolbarItemLocation {
 586        ToolbarItemLocation::PrimaryLeft
 587    }
 588
 589    fn breadcrumbs(&self, theme: &theme::Theme, cx: &App) -> Option<Vec<BreadcrumbText>> {
 590        self.editor.breadcrumbs(theme, cx)
 591    }
 592
 593    fn added_to_workspace(
 594        &mut self,
 595        workspace: &mut Workspace,
 596        window: &mut Window,
 597        cx: &mut Context<Self>,
 598    ) {
 599        self.editor.update(cx, |editor, cx| {
 600            editor.added_to_workspace(workspace, window, cx)
 601        });
 602    }
 603
 604    fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
 605        "Agent Diff".into()
 606    }
 607}
 608
 609impl Render for AgentDiffPane {
 610    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 611        let is_empty = self.multibuffer.read(cx).is_empty();
 612        let focus_handle = &self.focus_handle;
 613
 614        div()
 615            .track_focus(focus_handle)
 616            .key_context(if is_empty { "EmptyPane" } else { "AgentDiff" })
 617            .on_action(cx.listener(Self::keep))
 618            .on_action(cx.listener(Self::reject))
 619            .on_action(cx.listener(Self::reject_all))
 620            .on_action(cx.listener(Self::keep_all))
 621            .bg(cx.theme().colors().editor_background)
 622            .flex()
 623            .items_center()
 624            .justify_center()
 625            .size_full()
 626            .when(is_empty, |el| {
 627                el.child(
 628                    v_flex()
 629                        .items_center()
 630                        .gap_2()
 631                        .child("No changes to review")
 632                        .child(
 633                            Button::new("continue-iterating", "Continue Iterating")
 634                                .style(ButtonStyle::Filled)
 635                                .icon(IconName::ForwardArrow)
 636                                .icon_position(IconPosition::Start)
 637                                .icon_size(IconSize::Small)
 638                                .icon_color(Color::Muted)
 639                                .full_width()
 640                                .key_binding(KeyBinding::for_action_in(
 641                                    &ToggleFocus,
 642                                    &focus_handle.clone(),
 643                                    window,
 644                                    cx,
 645                                ))
 646                                .on_click(|_event, window, cx| {
 647                                    window.dispatch_action(ToggleFocus.boxed_clone(), cx)
 648                                }),
 649                        ),
 650                )
 651            })
 652            .when(!is_empty, |el| el.child(self.editor.clone()))
 653    }
 654}
 655
 656fn diff_hunk_controls(thread: &Entity<Thread>) -> editor::RenderDiffHunkControlsFn {
 657    let thread = thread.clone();
 658
 659    Arc::new(
 660        move |row,
 661              status: &DiffHunkStatus,
 662              hunk_range,
 663              is_created_file,
 664              line_height,
 665              editor: &Entity<Editor>,
 666              window: &mut Window,
 667              cx: &mut App| {
 668            {
 669                render_diff_hunk_controls(
 670                    row,
 671                    status,
 672                    hunk_range,
 673                    is_created_file,
 674                    line_height,
 675                    &thread,
 676                    editor,
 677                    window,
 678                    cx,
 679                )
 680            }
 681        },
 682    )
 683}
 684
 685fn render_diff_hunk_controls(
 686    row: u32,
 687    _status: &DiffHunkStatus,
 688    hunk_range: Range<editor::Anchor>,
 689    is_created_file: bool,
 690    line_height: Pixels,
 691    thread: &Entity<Thread>,
 692    editor: &Entity<Editor>,
 693    window: &mut Window,
 694    cx: &mut App,
 695) -> AnyElement {
 696    let editor = editor.clone();
 697
 698    h_flex()
 699        .h(line_height)
 700        .mr_0p5()
 701        .gap_1()
 702        .px_0p5()
 703        .pb_1()
 704        .border_x_1()
 705        .border_b_1()
 706        .border_color(cx.theme().colors().border)
 707        .rounded_b_md()
 708        .bg(cx.theme().colors().editor_background)
 709        .gap_1()
 710        .occlude()
 711        .shadow_md()
 712        .children(vec![
 713            Button::new(("reject", row as u64), "Reject")
 714                .disabled(is_created_file)
 715                .key_binding(
 716                    KeyBinding::for_action_in(
 717                        &Reject,
 718                        &editor.read(cx).focus_handle(cx),
 719                        window,
 720                        cx,
 721                    )
 722                    .map(|kb| kb.size(rems_from_px(12.))),
 723                )
 724                .on_click({
 725                    let editor = editor.clone();
 726                    let thread = thread.clone();
 727                    move |_event, window, cx| {
 728                        editor.update(cx, |editor, cx| {
 729                            let snapshot = editor.buffer().read(cx).snapshot(cx);
 730                            reject_edits_in_ranges(
 731                                editor,
 732                                &snapshot,
 733                                &thread,
 734                                vec![hunk_range.start..hunk_range.start],
 735                                window,
 736                                cx,
 737                            );
 738                        })
 739                    }
 740                }),
 741            Button::new(("keep", row as u64), "Keep")
 742                .key_binding(
 743                    KeyBinding::for_action_in(&Keep, &editor.read(cx).focus_handle(cx), window, cx)
 744                        .map(|kb| kb.size(rems_from_px(12.))),
 745                )
 746                .on_click({
 747                    let editor = editor.clone();
 748                    let thread = thread.clone();
 749                    move |_event, window, cx| {
 750                        editor.update(cx, |editor, cx| {
 751                            let snapshot = editor.buffer().read(cx).snapshot(cx);
 752                            keep_edits_in_ranges(
 753                                editor,
 754                                &snapshot,
 755                                &thread,
 756                                vec![hunk_range.start..hunk_range.start],
 757                                window,
 758                                cx,
 759                            );
 760                        });
 761                    }
 762                }),
 763        ])
 764        .when(
 765            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
 766            |el| {
 767                el.child(
 768                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
 769                        .shape(IconButtonShape::Square)
 770                        .icon_size(IconSize::Small)
 771                        // .disabled(!has_multiple_hunks)
 772                        .tooltip({
 773                            let focus_handle = editor.focus_handle(cx);
 774                            move |window, cx| {
 775                                Tooltip::for_action_in(
 776                                    "Next Hunk",
 777                                    &GoToHunk,
 778                                    &focus_handle,
 779                                    window,
 780                                    cx,
 781                                )
 782                            }
 783                        })
 784                        .on_click({
 785                            let editor = editor.clone();
 786                            move |_event, window, cx| {
 787                                editor.update(cx, |editor, cx| {
 788                                    let snapshot = editor.snapshot(window, cx);
 789                                    let position =
 790                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
 791                                    editor.go_to_hunk_before_or_after_position(
 792                                        &snapshot,
 793                                        position,
 794                                        Direction::Next,
 795                                        window,
 796                                        cx,
 797                                    );
 798                                    editor.expand_selected_diff_hunks(cx);
 799                                });
 800                            }
 801                        }),
 802                )
 803                .child(
 804                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
 805                        .shape(IconButtonShape::Square)
 806                        .icon_size(IconSize::Small)
 807                        // .disabled(!has_multiple_hunks)
 808                        .tooltip({
 809                            let focus_handle = editor.focus_handle(cx);
 810                            move |window, cx| {
 811                                Tooltip::for_action_in(
 812                                    "Previous Hunk",
 813                                    &GoToPreviousHunk,
 814                                    &focus_handle,
 815                                    window,
 816                                    cx,
 817                                )
 818                            }
 819                        })
 820                        .on_click({
 821                            let editor = editor.clone();
 822                            move |_event, window, cx| {
 823                                editor.update(cx, |editor, cx| {
 824                                    let snapshot = editor.snapshot(window, cx);
 825                                    let point =
 826                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
 827                                    editor.go_to_hunk_before_or_after_position(
 828                                        &snapshot,
 829                                        point,
 830                                        Direction::Prev,
 831                                        window,
 832                                        cx,
 833                                    );
 834                                    editor.expand_selected_diff_hunks(cx);
 835                                });
 836                            }
 837                        }),
 838                )
 839            },
 840        )
 841        .into_any_element()
 842}
 843
 844struct AgentDiffAddon;
 845
 846impl editor::Addon for AgentDiffAddon {
 847    fn to_any(&self) -> &dyn std::any::Any {
 848        self
 849    }
 850
 851    fn extend_key_context(&self, key_context: &mut gpui::KeyContext, _: &App) {
 852        key_context.add("agent_diff");
 853    }
 854}
 855
 856pub struct AgentDiffToolbar {
 857    active_item: Option<AgentDiffToolbarItem>,
 858    _settings_subscription: Subscription,
 859}
 860
 861pub enum AgentDiffToolbarItem {
 862    Pane(WeakEntity<AgentDiffPane>),
 863    Editor {
 864        editor: WeakEntity<Editor>,
 865        state: EditorState,
 866        _diff_subscription: Subscription,
 867    },
 868}
 869
 870impl AgentDiffToolbar {
 871    pub fn new(cx: &mut Context<Self>) -> Self {
 872        Self {
 873            active_item: None,
 874            _settings_subscription: cx.observe_global::<SettingsStore>(Self::update_location),
 875        }
 876    }
 877
 878    fn dispatch_action(&self, action: &dyn Action, window: &mut Window, cx: &mut Context<Self>) {
 879        let Some(active_item) = self.active_item.as_ref() else {
 880            return;
 881        };
 882
 883        match active_item {
 884            AgentDiffToolbarItem::Pane(agent_diff) => {
 885                if let Some(agent_diff) = agent_diff.upgrade() {
 886                    agent_diff.focus_handle(cx).focus(window);
 887                }
 888            }
 889            AgentDiffToolbarItem::Editor { editor, .. } => {
 890                if let Some(editor) = editor.upgrade() {
 891                    editor.read(cx).focus_handle(cx).focus(window);
 892                }
 893            }
 894        }
 895
 896        let action = action.boxed_clone();
 897        cx.defer(move |cx| {
 898            cx.dispatch_action(action.as_ref());
 899        })
 900    }
 901
 902    fn handle_diff_notify(&mut self, agent_diff: Entity<AgentDiff>, cx: &mut Context<Self>) {
 903        let Some(AgentDiffToolbarItem::Editor { editor, state, .. }) = self.active_item.as_mut()
 904        else {
 905            return;
 906        };
 907
 908        *state = agent_diff.read(cx).editor_state(&editor);
 909        self.update_location(cx);
 910        cx.notify();
 911    }
 912
 913    fn update_location(&mut self, cx: &mut Context<Self>) {
 914        let location = self.location(cx);
 915        cx.emit(ToolbarItemEvent::ChangeLocation(location));
 916    }
 917
 918    fn location(&self, cx: &App) -> ToolbarItemLocation {
 919        if !EditorSettings::get_global(cx).toolbar.agent_review {
 920            return ToolbarItemLocation::Hidden;
 921        }
 922
 923        match &self.active_item {
 924            None => ToolbarItemLocation::Hidden,
 925            Some(AgentDiffToolbarItem::Pane(_)) => ToolbarItemLocation::PrimaryRight,
 926            Some(AgentDiffToolbarItem::Editor { state, .. }) => match state {
 927                EditorState::Generating | EditorState::Reviewing => {
 928                    ToolbarItemLocation::PrimaryRight
 929                }
 930                EditorState::Idle => ToolbarItemLocation::Hidden,
 931            },
 932        }
 933    }
 934}
 935
 936impl EventEmitter<ToolbarItemEvent> for AgentDiffToolbar {}
 937
 938impl ToolbarItemView for AgentDiffToolbar {
 939    fn set_active_pane_item(
 940        &mut self,
 941        active_pane_item: Option<&dyn ItemHandle>,
 942        _: &mut Window,
 943        cx: &mut Context<Self>,
 944    ) -> ToolbarItemLocation {
 945        if let Some(item) = active_pane_item {
 946            if let Some(pane) = item.act_as::<AgentDiffPane>(cx) {
 947                self.active_item = Some(AgentDiffToolbarItem::Pane(pane.downgrade()));
 948                return self.location(cx);
 949            }
 950
 951            if let Some(editor) = item.act_as::<Editor>(cx) {
 952                if editor.read(cx).mode().is_full() {
 953                    let agent_diff = AgentDiff::global(cx);
 954
 955                    self.active_item = Some(AgentDiffToolbarItem::Editor {
 956                        editor: editor.downgrade(),
 957                        state: agent_diff.read(cx).editor_state(&editor.downgrade()),
 958                        _diff_subscription: cx.observe(&agent_diff, Self::handle_diff_notify),
 959                    });
 960
 961                    return self.location(cx);
 962                }
 963            }
 964        }
 965
 966        self.active_item = None;
 967        return self.location(cx);
 968    }
 969
 970    fn pane_focus_update(
 971        &mut self,
 972        _pane_focused: bool,
 973        _window: &mut Window,
 974        _cx: &mut Context<Self>,
 975    ) {
 976    }
 977}
 978
 979impl Render for AgentDiffToolbar {
 980    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 981        let spinner_icon = div()
 982            .px_0p5()
 983            .id("generating")
 984            .tooltip(Tooltip::text("Generating Changes…"))
 985            .child(
 986                Icon::new(IconName::LoadCircle)
 987                    .size(IconSize::Small)
 988                    .color(Color::Accent)
 989                    .with_animation(
 990                        "load_circle",
 991                        Animation::new(Duration::from_secs(3)).repeat(),
 992                        |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
 993                    ),
 994            )
 995            .into_any();
 996
 997        let Some(active_item) = self.active_item.as_ref() else {
 998            return Empty.into_any();
 999        };
1000
1001        match active_item {
1002            AgentDiffToolbarItem::Editor { editor, state, .. } => {
1003                let Some(editor) = editor.upgrade() else {
1004                    return Empty.into_any();
1005                };
1006
1007                let editor_focus_handle = editor.read(cx).focus_handle(cx);
1008
1009                let content = match state {
1010                    EditorState::Idle => return Empty.into_any(),
1011                    EditorState::Generating => vec![spinner_icon],
1012                    EditorState::Reviewing => vec![
1013                        h_flex()
1014                            .child(
1015                                IconButton::new("hunk-up", IconName::ArrowUp)
1016                                    .icon_size(IconSize::Small)
1017                                    .tooltip(Tooltip::for_action_title_in(
1018                                        "Previous Hunk",
1019                                        &GoToPreviousHunk,
1020                                        &editor_focus_handle,
1021                                    ))
1022                                    .on_click({
1023                                        let editor_focus_handle = editor_focus_handle.clone();
1024                                        move |_, window, cx| {
1025                                            editor_focus_handle.dispatch_action(
1026                                                &GoToPreviousHunk,
1027                                                window,
1028                                                cx,
1029                                            );
1030                                        }
1031                                    }),
1032                            )
1033                            .child(
1034                                IconButton::new("hunk-down", IconName::ArrowDown)
1035                                    .icon_size(IconSize::Small)
1036                                    .tooltip(Tooltip::for_action_title_in(
1037                                        "Next Hunk",
1038                                        &GoToHunk,
1039                                        &editor_focus_handle,
1040                                    ))
1041                                    .on_click({
1042                                        let editor_focus_handle = editor_focus_handle.clone();
1043                                        move |_, window, cx| {
1044                                            editor_focus_handle
1045                                                .dispatch_action(&GoToHunk, window, cx);
1046                                        }
1047                                    }),
1048                            )
1049                            .into_any_element(),
1050                        vertical_divider().into_any_element(),
1051                        h_flex()
1052                            .gap_0p5()
1053                            .child(
1054                                Button::new("reject-all", "Reject All")
1055                                    .key_binding({
1056                                        KeyBinding::for_action_in(
1057                                            &RejectAll,
1058                                            &editor_focus_handle,
1059                                            window,
1060                                            cx,
1061                                        )
1062                                        .map(|kb| kb.size(rems_from_px(12.)))
1063                                    })
1064                                    .on_click(cx.listener(|this, _, window, cx| {
1065                                        this.dispatch_action(&RejectAll, window, cx)
1066                                    })),
1067                            )
1068                            .child(
1069                                Button::new("keep-all", "Keep All")
1070                                    .key_binding({
1071                                        KeyBinding::for_action_in(
1072                                            &KeepAll,
1073                                            &editor_focus_handle,
1074                                            window,
1075                                            cx,
1076                                        )
1077                                        .map(|kb| kb.size(rems_from_px(12.)))
1078                                    })
1079                                    .on_click(cx.listener(|this, _, window, cx| {
1080                                        this.dispatch_action(&KeepAll, window, cx)
1081                                    })),
1082                            )
1083                            .into_any_element(),
1084                    ],
1085                };
1086
1087                h_flex()
1088                    .track_focus(&editor_focus_handle)
1089                    .size_full()
1090                    .px_1()
1091                    .mr_1()
1092                    .gap_1()
1093                    .children(content)
1094                    .child(vertical_divider())
1095                    .when_some(editor.read(cx).workspace(), |this, _workspace| {
1096                        this.child(
1097                            IconButton::new("review", IconName::ListCollapse)
1098                                .icon_size(IconSize::Small)
1099                                .tooltip(Tooltip::for_action_title_in(
1100                                    "Review All Files",
1101                                    &OpenAgentDiff,
1102                                    &editor_focus_handle,
1103                                ))
1104                                .on_click({
1105                                    cx.listener(move |this, _, window, cx| {
1106                                        this.dispatch_action(&OpenAgentDiff, window, cx);
1107                                    })
1108                                }),
1109                        )
1110                    })
1111                    .child(vertical_divider())
1112                    .on_action({
1113                        let editor = editor.clone();
1114                        move |_action: &OpenAgentDiff, window, cx| {
1115                            AgentDiff::global(cx).update(cx, |agent_diff, cx| {
1116                                agent_diff.deploy_pane_from_editor(&editor, window, cx);
1117                            });
1118                        }
1119                    })
1120                    .into_any()
1121            }
1122            AgentDiffToolbarItem::Pane(agent_diff) => {
1123                let Some(agent_diff) = agent_diff.upgrade() else {
1124                    return Empty.into_any();
1125                };
1126
1127                let is_generating = agent_diff.read(cx).thread.read(cx).is_generating();
1128                if is_generating {
1129                    return div().px_2().child(spinner_icon).into_any();
1130                }
1131
1132                let is_empty = agent_diff.read(cx).multibuffer.read(cx).is_empty();
1133                if is_empty {
1134                    return Empty.into_any();
1135                }
1136
1137                let focus_handle = agent_diff.focus_handle(cx);
1138
1139                h_group_xl()
1140                    .my_neg_1()
1141                    .py_1()
1142                    .items_center()
1143                    .flex_wrap()
1144                    .child(
1145                        h_group_sm()
1146                            .child(
1147                                Button::new("reject-all", "Reject All")
1148                                    .key_binding({
1149                                        KeyBinding::for_action_in(
1150                                            &RejectAll,
1151                                            &focus_handle,
1152                                            window,
1153                                            cx,
1154                                        )
1155                                        .map(|kb| kb.size(rems_from_px(12.)))
1156                                    })
1157                                    .on_click(cx.listener(|this, _, window, cx| {
1158                                        this.dispatch_action(&RejectAll, window, cx)
1159                                    })),
1160                            )
1161                            .child(
1162                                Button::new("keep-all", "Keep All")
1163                                    .key_binding({
1164                                        KeyBinding::for_action_in(
1165                                            &KeepAll,
1166                                            &focus_handle,
1167                                            window,
1168                                            cx,
1169                                        )
1170                                        .map(|kb| kb.size(rems_from_px(12.)))
1171                                    })
1172                                    .on_click(cx.listener(|this, _, window, cx| {
1173                                        this.dispatch_action(&KeepAll, window, cx)
1174                                    })),
1175                            ),
1176                    )
1177                    .into_any()
1178            }
1179        }
1180    }
1181}
1182
1183#[derive(Default)]
1184pub struct AgentDiff {
1185    reviewing_editors: HashMap<WeakEntity<Editor>, EditorState>,
1186    workspace_threads: HashMap<WeakEntity<Workspace>, WorkspaceThread>,
1187}
1188
1189#[derive(Clone, Debug, PartialEq, Eq)]
1190pub enum EditorState {
1191    Idle,
1192    Reviewing,
1193    Generating,
1194}
1195
1196struct WorkspaceThread {
1197    thread: WeakEntity<Thread>,
1198    _thread_subscriptions: [Subscription; 2],
1199    singleton_editors: HashMap<WeakEntity<Buffer>, HashMap<WeakEntity<Editor>, Subscription>>,
1200    _settings_subscription: Subscription,
1201    _workspace_subscription: Option<Subscription>,
1202}
1203
1204struct AgentDiffGlobal(Entity<AgentDiff>);
1205
1206impl Global for AgentDiffGlobal {}
1207
1208impl AgentDiff {
1209    fn global(cx: &mut App) -> Entity<Self> {
1210        cx.try_global::<AgentDiffGlobal>()
1211            .map(|global| global.0.clone())
1212            .unwrap_or_else(|| {
1213                let entity = cx.new(|_cx| Self::default());
1214                let global = AgentDiffGlobal(entity.clone());
1215                cx.set_global(global);
1216                entity.clone()
1217            })
1218    }
1219
1220    pub fn set_active_thread(
1221        workspace: &WeakEntity<Workspace>,
1222        thread: &Entity<Thread>,
1223        window: &mut Window,
1224        cx: &mut App,
1225    ) {
1226        Self::global(cx).update(cx, |this, cx| {
1227            this.register_active_thread_impl(workspace, thread, window, cx);
1228        });
1229    }
1230
1231    fn register_active_thread_impl(
1232        &mut self,
1233        workspace: &WeakEntity<Workspace>,
1234        thread: &Entity<Thread>,
1235        window: &mut Window,
1236        cx: &mut Context<Self>,
1237    ) {
1238        let action_log = thread.read(cx).action_log().clone();
1239
1240        let action_log_subscription = cx.observe_in(&action_log, window, {
1241            let workspace = workspace.clone();
1242            move |this, _action_log, window, cx| {
1243                this.update_reviewing_editors(&workspace, window, cx);
1244            }
1245        });
1246
1247        let thread_subscription = cx.subscribe_in(&thread, window, {
1248            let workspace = workspace.clone();
1249            move |this, _thread, event, window, cx| {
1250                this.handle_thread_event(&workspace, event, window, cx)
1251            }
1252        });
1253
1254        if let Some(workspace_thread) = self.workspace_threads.get_mut(&workspace) {
1255            // replace thread and action log subscription, but keep editors
1256            workspace_thread.thread = thread.downgrade();
1257            workspace_thread._thread_subscriptions = [action_log_subscription, thread_subscription];
1258            self.update_reviewing_editors(&workspace, window, cx);
1259            return;
1260        }
1261
1262        let settings_subscription = cx.observe_global_in::<SettingsStore>(window, {
1263            let workspace = workspace.clone();
1264            let mut was_active = AssistantSettings::get_global(cx).single_file_review;
1265            move |this, window, cx| {
1266                let is_active = AssistantSettings::get_global(cx).single_file_review;
1267                if was_active != is_active {
1268                    was_active = is_active;
1269                    this.update_reviewing_editors(&workspace, window, cx);
1270                }
1271            }
1272        });
1273
1274        let workspace_subscription = workspace
1275            .upgrade()
1276            .map(|workspace| cx.subscribe_in(&workspace, window, Self::handle_workspace_event));
1277
1278        self.workspace_threads.insert(
1279            workspace.clone(),
1280            WorkspaceThread {
1281                thread: thread.downgrade(),
1282                _thread_subscriptions: [action_log_subscription, thread_subscription],
1283                singleton_editors: HashMap::default(),
1284                _settings_subscription: settings_subscription,
1285                _workspace_subscription: workspace_subscription,
1286            },
1287        );
1288
1289        let workspace = workspace.clone();
1290        cx.defer_in(window, move |this, window, cx| {
1291            if let Some(workspace) = workspace.upgrade() {
1292                this.register_workspace(workspace, window, cx);
1293            }
1294        });
1295    }
1296
1297    fn register_workspace(
1298        &mut self,
1299        workspace: Entity<Workspace>,
1300        window: &mut Window,
1301        cx: &mut Context<Self>,
1302    ) {
1303        let agent_diff = cx.entity();
1304
1305        let editors = workspace.update(cx, |workspace, cx| {
1306            let agent_diff = agent_diff.clone();
1307
1308            Self::register_review_action::<Keep>(workspace, Self::keep, &agent_diff);
1309            Self::register_review_action::<Reject>(workspace, Self::reject, &agent_diff);
1310            Self::register_review_action::<KeepAll>(workspace, Self::keep_all, &agent_diff);
1311            Self::register_review_action::<RejectAll>(workspace, Self::reject_all, &agent_diff);
1312
1313            workspace.items_of_type(cx).collect::<Vec<_>>()
1314        });
1315
1316        let weak_workspace = workspace.downgrade();
1317
1318        for editor in editors {
1319            if let Some(buffer) = Self::full_editor_buffer(editor.read(cx), cx) {
1320                self.register_editor(weak_workspace.clone(), buffer, editor, window, cx);
1321            };
1322        }
1323
1324        self.update_reviewing_editors(&weak_workspace, window, cx);
1325    }
1326
1327    fn register_review_action<T: Action>(
1328        workspace: &mut Workspace,
1329        review: impl Fn(&Entity<Editor>, &Entity<Thread>, &mut Window, &mut App) -> PostReviewState
1330        + 'static,
1331        this: &Entity<AgentDiff>,
1332    ) {
1333        let this = this.clone();
1334        workspace.register_action(move |workspace, _: &T, window, cx| {
1335            let review = &review;
1336            let task = this.update(cx, |this, cx| {
1337                this.review_in_active_editor(workspace, review, window, cx)
1338            });
1339
1340            if let Some(task) = task {
1341                task.detach_and_log_err(cx);
1342            } else {
1343                cx.propagate();
1344            }
1345        });
1346    }
1347
1348    fn handle_thread_event(
1349        &mut self,
1350        workspace: &WeakEntity<Workspace>,
1351        event: &ThreadEvent,
1352        window: &mut Window,
1353        cx: &mut Context<Self>,
1354    ) {
1355        match event {
1356            ThreadEvent::NewRequest
1357            | ThreadEvent::Stopped(Ok(StopReason::EndTurn))
1358            | ThreadEvent::Stopped(Ok(StopReason::MaxTokens))
1359            | ThreadEvent::Stopped(Err(_))
1360            | ThreadEvent::ShowError(_)
1361            | ThreadEvent::CompletionCanceled => {
1362                self.update_reviewing_editors(workspace, window, cx);
1363            }
1364            // intentionally being exhaustive in case we add a variant we should handle
1365            ThreadEvent::Stopped(Ok(StopReason::ToolUse))
1366            | ThreadEvent::StreamedCompletion
1367            | ThreadEvent::ReceivedTextChunk
1368            | ThreadEvent::StreamedAssistantText(_, _)
1369            | ThreadEvent::StreamedAssistantThinking(_, _)
1370            | ThreadEvent::StreamedToolUse { .. }
1371            | ThreadEvent::InvalidToolInput { .. }
1372            | ThreadEvent::MissingToolUse { .. }
1373            | ThreadEvent::MessageAdded(_)
1374            | ThreadEvent::MessageEdited(_)
1375            | ThreadEvent::MessageDeleted(_)
1376            | ThreadEvent::SummaryGenerated
1377            | ThreadEvent::SummaryChanged
1378            | ThreadEvent::UsePendingTools { .. }
1379            | ThreadEvent::ToolFinished { .. }
1380            | ThreadEvent::CheckpointChanged
1381            | ThreadEvent::ToolConfirmationNeeded
1382            | ThreadEvent::CancelEditing => {}
1383        }
1384    }
1385
1386    fn handle_workspace_event(
1387        &mut self,
1388        workspace: &Entity<Workspace>,
1389        event: &workspace::Event,
1390        window: &mut Window,
1391        cx: &mut Context<Self>,
1392    ) {
1393        match event {
1394            workspace::Event::ItemAdded { item } => {
1395                if let Some(editor) = item.downcast::<Editor>() {
1396                    if let Some(buffer) = Self::full_editor_buffer(editor.read(cx), cx) {
1397                        self.register_editor(
1398                            workspace.downgrade(),
1399                            buffer.clone(),
1400                            editor,
1401                            window,
1402                            cx,
1403                        );
1404                    }
1405                }
1406            }
1407            _ => {}
1408        }
1409    }
1410
1411    fn full_editor_buffer(editor: &Editor, cx: &App) -> Option<WeakEntity<Buffer>> {
1412        if editor.mode().is_full() {
1413            editor
1414                .buffer()
1415                .read(cx)
1416                .as_singleton()
1417                .map(|buffer| buffer.downgrade())
1418        } else {
1419            None
1420        }
1421    }
1422
1423    fn register_editor(
1424        &mut self,
1425        workspace: WeakEntity<Workspace>,
1426        buffer: WeakEntity<Buffer>,
1427        editor: Entity<Editor>,
1428        window: &mut Window,
1429        cx: &mut Context<Self>,
1430    ) {
1431        let Some(workspace_thread) = self.workspace_threads.get_mut(&workspace) else {
1432            return;
1433        };
1434
1435        let weak_editor = editor.downgrade();
1436
1437        workspace_thread
1438            .singleton_editors
1439            .entry(buffer.clone())
1440            .or_default()
1441            .entry(weak_editor.clone())
1442            .or_insert_with(|| {
1443                let workspace = workspace.clone();
1444                cx.observe_release(&editor, move |this, _, _cx| {
1445                    let Some(active_thread) = this.workspace_threads.get_mut(&workspace) else {
1446                        return;
1447                    };
1448
1449                    if let Entry::Occupied(mut entry) =
1450                        active_thread.singleton_editors.entry(buffer)
1451                    {
1452                        let set = entry.get_mut();
1453                        set.remove(&weak_editor);
1454
1455                        if set.is_empty() {
1456                            entry.remove();
1457                        }
1458                    }
1459                })
1460            });
1461
1462        self.update_reviewing_editors(&workspace, window, cx);
1463    }
1464
1465    fn update_reviewing_editors(
1466        &mut self,
1467        workspace: &WeakEntity<Workspace>,
1468        window: &mut Window,
1469        cx: &mut Context<Self>,
1470    ) {
1471        if !AssistantSettings::get_global(cx).single_file_review {
1472            for (editor, _) in self.reviewing_editors.drain() {
1473                editor
1474                    .update(cx, |editor, cx| editor.end_temporary_diff_override(cx))
1475                    .ok();
1476            }
1477            return;
1478        }
1479
1480        let Some(workspace_thread) = self.workspace_threads.get_mut(workspace) else {
1481            return;
1482        };
1483
1484        let Some(thread) = workspace_thread.thread.upgrade() else {
1485            return;
1486        };
1487
1488        let action_log = thread.read(cx).action_log();
1489        let changed_buffers = action_log.read(cx).changed_buffers(cx);
1490
1491        let mut unaffected = self.reviewing_editors.clone();
1492
1493        for (buffer, diff_handle) in changed_buffers {
1494            if buffer.read(cx).file().is_none() {
1495                continue;
1496            }
1497
1498            let Some(buffer_editors) = workspace_thread.singleton_editors.get(&buffer.downgrade())
1499            else {
1500                continue;
1501            };
1502
1503            for (weak_editor, _) in buffer_editors {
1504                let Some(editor) = weak_editor.upgrade() else {
1505                    continue;
1506                };
1507
1508                let multibuffer = editor.read(cx).buffer().clone();
1509                multibuffer.update(cx, |multibuffer, cx| {
1510                    multibuffer.add_diff(diff_handle.clone(), cx);
1511                });
1512
1513                let new_state = if thread.read(cx).is_generating() {
1514                    EditorState::Generating
1515                } else {
1516                    EditorState::Reviewing
1517                };
1518
1519                let previous_state = self
1520                    .reviewing_editors
1521                    .insert(weak_editor.clone(), new_state.clone());
1522
1523                if previous_state.is_none() {
1524                    editor.update(cx, |editor, cx| {
1525                        editor.start_temporary_diff_override();
1526                        editor.set_render_diff_hunk_controls(diff_hunk_controls(&thread), cx);
1527                        editor.set_expand_all_diff_hunks(cx);
1528                        editor.register_addon(EditorAgentDiffAddon);
1529                    });
1530                } else {
1531                    unaffected.remove(&weak_editor);
1532                }
1533
1534                if new_state == EditorState::Reviewing && previous_state != Some(new_state) {
1535                    // Jump to first hunk when we enter review mode
1536                    editor.update(cx, |editor, cx| {
1537                        let snapshot = multibuffer.read(cx).snapshot(cx);
1538                        if let Some(first_hunk) = snapshot.diff_hunks().next() {
1539                            let first_hunk_start = first_hunk.multi_buffer_range().start;
1540
1541                            editor.change_selections(
1542                                Some(Autoscroll::center()),
1543                                window,
1544                                cx,
1545                                |selections| {
1546                                    selections.select_ranges([first_hunk_start..first_hunk_start])
1547                                },
1548                            );
1549                        }
1550                    });
1551                }
1552            }
1553        }
1554
1555        // Remove editors from this workspace that are no longer under review
1556        for (editor, _) in unaffected {
1557            // Note: We could avoid this check by storing `reviewing_editors` by Workspace,
1558            // but that would add another lookup in `AgentDiff::editor_state`
1559            // which gets called much more frequently.
1560            let in_workspace = editor
1561                .read_with(cx, |editor, _cx| editor.workspace())
1562                .ok()
1563                .flatten()
1564                .map_or(false, |editor_workspace| {
1565                    editor_workspace.entity_id() == workspace.entity_id()
1566                });
1567
1568            if in_workspace {
1569                editor
1570                    .update(cx, |editor, cx| editor.end_temporary_diff_override(cx))
1571                    .ok();
1572                self.reviewing_editors.remove(&editor);
1573            }
1574        }
1575
1576        cx.notify();
1577    }
1578
1579    fn editor_state(&self, editor: &WeakEntity<Editor>) -> EditorState {
1580        self.reviewing_editors
1581            .get(&editor)
1582            .cloned()
1583            .unwrap_or(EditorState::Idle)
1584    }
1585
1586    fn deploy_pane_from_editor(&self, editor: &Entity<Editor>, window: &mut Window, cx: &mut App) {
1587        let Some(workspace) = editor.read(cx).workspace() else {
1588            return;
1589        };
1590
1591        let Some(WorkspaceThread { thread, .. }) =
1592            self.workspace_threads.get(&workspace.downgrade())
1593        else {
1594            return;
1595        };
1596
1597        let Some(thread) = thread.upgrade() else {
1598            return;
1599        };
1600
1601        AgentDiffPane::deploy(thread, workspace.downgrade(), window, cx).log_err();
1602    }
1603
1604    fn keep_all(
1605        editor: &Entity<Editor>,
1606        thread: &Entity<Thread>,
1607        window: &mut Window,
1608        cx: &mut App,
1609    ) -> PostReviewState {
1610        editor.update(cx, |editor, cx| {
1611            let snapshot = editor.buffer().read(cx).snapshot(cx);
1612            keep_edits_in_ranges(
1613                editor,
1614                &snapshot,
1615                thread,
1616                vec![editor::Anchor::min()..editor::Anchor::max()],
1617                window,
1618                cx,
1619            );
1620        });
1621        PostReviewState::AllReviewed
1622    }
1623
1624    fn reject_all(
1625        editor: &Entity<Editor>,
1626        thread: &Entity<Thread>,
1627        window: &mut Window,
1628        cx: &mut App,
1629    ) -> PostReviewState {
1630        editor.update(cx, |editor, cx| {
1631            let snapshot = editor.buffer().read(cx).snapshot(cx);
1632            reject_edits_in_ranges(
1633                editor,
1634                &snapshot,
1635                thread,
1636                vec![editor::Anchor::min()..editor::Anchor::max()],
1637                window,
1638                cx,
1639            );
1640        });
1641        PostReviewState::AllReviewed
1642    }
1643
1644    fn keep(
1645        editor: &Entity<Editor>,
1646        thread: &Entity<Thread>,
1647        window: &mut Window,
1648        cx: &mut App,
1649    ) -> PostReviewState {
1650        editor.update(cx, |editor, cx| {
1651            let snapshot = editor.buffer().read(cx).snapshot(cx);
1652            keep_edits_in_selection(editor, &snapshot, thread, window, cx);
1653            Self::post_review_state(&snapshot)
1654        })
1655    }
1656
1657    fn reject(
1658        editor: &Entity<Editor>,
1659        thread: &Entity<Thread>,
1660        window: &mut Window,
1661        cx: &mut App,
1662    ) -> PostReviewState {
1663        editor.update(cx, |editor, cx| {
1664            let snapshot = editor.buffer().read(cx).snapshot(cx);
1665            reject_edits_in_selection(editor, &snapshot, thread, window, cx);
1666            Self::post_review_state(&snapshot)
1667        })
1668    }
1669
1670    fn post_review_state(snapshot: &MultiBufferSnapshot) -> PostReviewState {
1671        for (i, _) in snapshot.diff_hunks().enumerate() {
1672            if i > 0 {
1673                return PostReviewState::Pending;
1674            }
1675        }
1676        PostReviewState::AllReviewed
1677    }
1678
1679    fn review_in_active_editor(
1680        &mut self,
1681        workspace: &mut Workspace,
1682        review: impl Fn(&Entity<Editor>, &Entity<Thread>, &mut Window, &mut App) -> PostReviewState,
1683        window: &mut Window,
1684        cx: &mut Context<Self>,
1685    ) -> Option<Task<Result<()>>> {
1686        let active_item = workspace.active_item(cx)?;
1687        let editor = active_item.act_as::<Editor>(cx)?;
1688
1689        if !matches!(
1690            self.editor_state(&editor.downgrade()),
1691            EditorState::Reviewing
1692        ) {
1693            return None;
1694        }
1695
1696        let WorkspaceThread { thread, .. } =
1697            self.workspace_threads.get(&workspace.weak_handle())?;
1698
1699        let thread = thread.upgrade()?;
1700
1701        if let PostReviewState::AllReviewed = review(&editor, &thread, window, cx) {
1702            if let Some(curr_buffer) = editor.read(cx).buffer().read(cx).as_singleton() {
1703                let changed_buffers = thread.read(cx).action_log().read(cx).changed_buffers(cx);
1704
1705                let mut keys = changed_buffers.keys().cycle();
1706                keys.find(|k| *k == &curr_buffer);
1707                let next_project_path = keys
1708                    .next()
1709                    .filter(|k| *k != &curr_buffer)
1710                    .and_then(|after| after.read(cx).project_path(cx));
1711
1712                if let Some(path) = next_project_path {
1713                    let task = workspace.open_path(path, None, true, window, cx);
1714                    let task = cx.spawn(async move |_, _cx| task.await.map(|_| ()));
1715                    return Some(task);
1716                }
1717            }
1718        }
1719
1720        return Some(Task::ready(Ok(())));
1721    }
1722}
1723
1724enum PostReviewState {
1725    AllReviewed,
1726    Pending,
1727}
1728
1729pub struct EditorAgentDiffAddon;
1730
1731impl editor::Addon for EditorAgentDiffAddon {
1732    fn to_any(&self) -> &dyn std::any::Any {
1733        self
1734    }
1735
1736    fn extend_key_context(&self, key_context: &mut gpui::KeyContext, _: &App) {
1737        key_context.add("agent_diff");
1738        key_context.add("editor_agent_diff");
1739    }
1740}
1741
1742#[cfg(test)]
1743mod tests {
1744    use super::*;
1745    use crate::{Keep, ThreadStore, thread_store};
1746    use assistant_settings::AssistantSettings;
1747    use assistant_tool::ToolWorkingSet;
1748    use editor::EditorSettings;
1749    use gpui::{TestAppContext, UpdateGlobal, VisualTestContext};
1750    use project::{FakeFs, Project};
1751    use prompt_store::PromptBuilder;
1752    use serde_json::json;
1753    use settings::{Settings, SettingsStore};
1754    use std::sync::Arc;
1755    use theme::ThemeSettings;
1756    use util::path;
1757
1758    #[gpui::test]
1759    async fn test_multibuffer_agent_diff(cx: &mut TestAppContext) {
1760        cx.update(|cx| {
1761            let settings_store = SettingsStore::test(cx);
1762            cx.set_global(settings_store);
1763            language::init(cx);
1764            Project::init_settings(cx);
1765            AssistantSettings::register(cx);
1766            prompt_store::init(cx);
1767            thread_store::init(cx);
1768            workspace::init_settings(cx);
1769            ThemeSettings::register(cx);
1770            EditorSettings::register(cx);
1771            language_model::init_settings(cx);
1772        });
1773
1774        let fs = FakeFs::new(cx.executor());
1775        fs.insert_tree(
1776            path!("/test"),
1777            json!({"file1": "abc\ndef\nghi\njkl\nmno\npqr\nstu\nvwx\nyz"}),
1778        )
1779        .await;
1780        let project = Project::test(fs, [path!("/test").as_ref()], cx).await;
1781        let buffer_path = project
1782            .read_with(cx, |project, cx| {
1783                project.find_project_path("test/file1", cx)
1784            })
1785            .unwrap();
1786
1787        let prompt_store = None;
1788        let thread_store = cx
1789            .update(|cx| {
1790                ThreadStore::load(
1791                    project.clone(),
1792                    cx.new(|_| ToolWorkingSet::default()),
1793                    prompt_store,
1794                    Arc::new(PromptBuilder::new(None).unwrap()),
1795                    cx,
1796                )
1797            })
1798            .await
1799            .unwrap();
1800        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
1801        let action_log = thread.read_with(cx, |thread, _| thread.action_log().clone());
1802
1803        let (workspace, cx) =
1804            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1805        let agent_diff = cx.new_window_entity(|window, cx| {
1806            AgentDiffPane::new(thread.clone(), workspace.downgrade(), window, cx)
1807        });
1808        let editor = agent_diff.read_with(cx, |diff, _cx| diff.editor.clone());
1809
1810        let buffer = project
1811            .update(cx, |project, cx| project.open_buffer(buffer_path, cx))
1812            .await
1813            .unwrap();
1814        cx.update(|_, cx| {
1815            action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));
1816            buffer.update(cx, |buffer, cx| {
1817                buffer
1818                    .edit(
1819                        [
1820                            (Point::new(1, 1)..Point::new(1, 2), "E"),
1821                            (Point::new(3, 2)..Point::new(3, 3), "L"),
1822                            (Point::new(5, 0)..Point::new(5, 1), "P"),
1823                            (Point::new(7, 1)..Point::new(7, 2), "W"),
1824                        ],
1825                        None,
1826                        cx,
1827                    )
1828                    .unwrap()
1829            });
1830            action_log.update(cx, |log, cx| log.buffer_edited(buffer.clone(), cx));
1831        });
1832        cx.run_until_parked();
1833
1834        // When opening the assistant diff, the cursor is positioned on the first hunk.
1835        assert_eq!(
1836            editor.read_with(cx, |editor, cx| editor.text(cx)),
1837            "abc\ndef\ndEf\nghi\njkl\njkL\nmno\npqr\nPqr\nstu\nvwx\nvWx\nyz"
1838        );
1839        assert_eq!(
1840            editor
1841                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
1842                .range(),
1843            Point::new(1, 0)..Point::new(1, 0)
1844        );
1845
1846        // After keeping a hunk, the cursor should be positioned on the second hunk.
1847        agent_diff.update_in(cx, |diff, window, cx| diff.keep(&Keep, window, cx));
1848        cx.run_until_parked();
1849        assert_eq!(
1850            editor.read_with(cx, |editor, cx| editor.text(cx)),
1851            "abc\ndEf\nghi\njkl\njkL\nmno\npqr\nPqr\nstu\nvwx\nvWx\nyz"
1852        );
1853        assert_eq!(
1854            editor
1855                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
1856                .range(),
1857            Point::new(3, 0)..Point::new(3, 0)
1858        );
1859
1860        // Rejecting a hunk also moves the cursor to the next hunk, possibly cycling if it's at the end.
1861        editor.update_in(cx, |editor, window, cx| {
1862            editor.change_selections(None, window, cx, |selections| {
1863                selections.select_ranges([Point::new(10, 0)..Point::new(10, 0)])
1864            });
1865        });
1866        agent_diff.update_in(cx, |diff, window, cx| {
1867            diff.reject(&crate::Reject, window, cx)
1868        });
1869        cx.run_until_parked();
1870        assert_eq!(
1871            editor.read_with(cx, |editor, cx| editor.text(cx)),
1872            "abc\ndEf\nghi\njkl\njkL\nmno\npqr\nPqr\nstu\nvwx\nyz"
1873        );
1874        assert_eq!(
1875            editor
1876                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
1877                .range(),
1878            Point::new(3, 0)..Point::new(3, 0)
1879        );
1880
1881        // Keeping a range that doesn't intersect the current selection doesn't move it.
1882        agent_diff.update_in(cx, |_diff, window, cx| {
1883            let position = editor
1884                .read(cx)
1885                .buffer()
1886                .read(cx)
1887                .read(cx)
1888                .anchor_before(Point::new(7, 0));
1889            editor.update(cx, |editor, cx| {
1890                let snapshot = editor.buffer().read(cx).snapshot(cx);
1891                keep_edits_in_ranges(
1892                    editor,
1893                    &snapshot,
1894                    &thread,
1895                    vec![position..position],
1896                    window,
1897                    cx,
1898                )
1899            });
1900        });
1901        cx.run_until_parked();
1902        assert_eq!(
1903            editor.read_with(cx, |editor, cx| editor.text(cx)),
1904            "abc\ndEf\nghi\njkl\njkL\nmno\nPqr\nstu\nvwx\nyz"
1905        );
1906        assert_eq!(
1907            editor
1908                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
1909                .range(),
1910            Point::new(3, 0)..Point::new(3, 0)
1911        );
1912    }
1913
1914    #[gpui::test]
1915    async fn test_singleton_agent_diff(cx: &mut TestAppContext) {
1916        cx.update(|cx| {
1917            let settings_store = SettingsStore::test(cx);
1918            cx.set_global(settings_store);
1919            language::init(cx);
1920            Project::init_settings(cx);
1921            AssistantSettings::register(cx);
1922            prompt_store::init(cx);
1923            thread_store::init(cx);
1924            workspace::init_settings(cx);
1925            ThemeSettings::register(cx);
1926            EditorSettings::register(cx);
1927            language_model::init_settings(cx);
1928            workspace::register_project_item::<Editor>(cx);
1929        });
1930
1931        let fs = FakeFs::new(cx.executor());
1932        fs.insert_tree(
1933            path!("/test"),
1934            json!({"file1": "abc\ndef\nghi\njkl\nmno\npqr\nstu\nvwx\nyz"}),
1935        )
1936        .await;
1937        fs.insert_tree(path!("/test"), json!({"file2": "abc\ndef\nghi"}))
1938            .await;
1939
1940        let project = Project::test(fs, [path!("/test").as_ref()], cx).await;
1941        let buffer_path1 = project
1942            .read_with(cx, |project, cx| {
1943                project.find_project_path("test/file1", cx)
1944            })
1945            .unwrap();
1946        let buffer_path2 = project
1947            .read_with(cx, |project, cx| {
1948                project.find_project_path("test/file2", cx)
1949            })
1950            .unwrap();
1951
1952        let prompt_store = None;
1953        let thread_store = cx
1954            .update(|cx| {
1955                ThreadStore::load(
1956                    project.clone(),
1957                    cx.new(|_| ToolWorkingSet::default()),
1958                    prompt_store,
1959                    Arc::new(PromptBuilder::new(None).unwrap()),
1960                    cx,
1961                )
1962            })
1963            .await
1964            .unwrap();
1965        let thread = thread_store.update(cx, |store, cx| store.create_thread(cx));
1966        let action_log = thread.read_with(cx, |thread, _| thread.action_log().clone());
1967
1968        let (workspace, cx) =
1969            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
1970
1971        // Add the diff toolbar to the active pane
1972        let diff_toolbar = cx.new_window_entity(|_, cx| AgentDiffToolbar::new(cx));
1973
1974        workspace.update_in(cx, {
1975            let diff_toolbar = diff_toolbar.clone();
1976
1977            move |workspace, window, cx| {
1978                workspace.active_pane().update(cx, |pane, cx| {
1979                    pane.toolbar().update(cx, |toolbar, cx| {
1980                        toolbar.add_item(diff_toolbar, window, cx);
1981                    });
1982                })
1983            }
1984        });
1985
1986        // Set the active thread
1987        cx.update(|window, cx| {
1988            AgentDiff::set_active_thread(&workspace.downgrade(), &thread, window, cx)
1989        });
1990
1991        let buffer1 = project
1992            .update(cx, |project, cx| {
1993                project.open_buffer(buffer_path1.clone(), cx)
1994            })
1995            .await
1996            .unwrap();
1997        let buffer2 = project
1998            .update(cx, |project, cx| {
1999                project.open_buffer(buffer_path2.clone(), cx)
2000            })
2001            .await
2002            .unwrap();
2003
2004        // Open an editor for buffer1
2005        let editor1 = cx.new_window_entity(|window, cx| {
2006            Editor::for_buffer(buffer1.clone(), Some(project.clone()), window, cx)
2007        });
2008
2009        workspace.update_in(cx, |workspace, window, cx| {
2010            workspace.add_item_to_active_pane(Box::new(editor1.clone()), None, true, window, cx);
2011        });
2012        cx.run_until_parked();
2013
2014        // Toolbar knows about the current editor, but it's hidden since there are no changes yet
2015        assert!(diff_toolbar.read_with(cx, |toolbar, _cx| matches!(
2016            toolbar.active_item,
2017            Some(AgentDiffToolbarItem::Editor {
2018                state: EditorState::Idle,
2019                ..
2020            })
2021        )));
2022        assert_eq!(
2023            diff_toolbar.read_with(cx, |toolbar, cx| toolbar.location(cx)),
2024            ToolbarItemLocation::Hidden
2025        );
2026
2027        // Make changes
2028        cx.update(|_, cx| {
2029            action_log.update(cx, |log, cx| log.buffer_read(buffer1.clone(), cx));
2030            buffer1.update(cx, |buffer, cx| {
2031                buffer
2032                    .edit(
2033                        [
2034                            (Point::new(1, 1)..Point::new(1, 2), "E"),
2035                            (Point::new(3, 2)..Point::new(3, 3), "L"),
2036                            (Point::new(5, 0)..Point::new(5, 1), "P"),
2037                            (Point::new(7, 1)..Point::new(7, 2), "W"),
2038                        ],
2039                        None,
2040                        cx,
2041                    )
2042                    .unwrap()
2043            });
2044            action_log.update(cx, |log, cx| log.buffer_edited(buffer1.clone(), cx));
2045
2046            action_log.update(cx, |log, cx| log.buffer_read(buffer2.clone(), cx));
2047            buffer2.update(cx, |buffer, cx| {
2048                buffer
2049                    .edit(
2050                        [
2051                            (Point::new(0, 0)..Point::new(0, 1), "A"),
2052                            (Point::new(2, 1)..Point::new(2, 2), "H"),
2053                        ],
2054                        None,
2055                        cx,
2056                    )
2057                    .unwrap();
2058            });
2059            action_log.update(cx, |log, cx| log.buffer_edited(buffer2.clone(), cx));
2060        });
2061        cx.run_until_parked();
2062
2063        // The already opened editor displays the diff and the cursor is at the first hunk
2064        assert_eq!(
2065            editor1.read_with(cx, |editor, cx| editor.text(cx)),
2066            "abc\ndef\ndEf\nghi\njkl\njkL\nmno\npqr\nPqr\nstu\nvwx\nvWx\nyz"
2067        );
2068        assert_eq!(
2069            editor1
2070                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
2071                .range(),
2072            Point::new(1, 0)..Point::new(1, 0)
2073        );
2074
2075        // The toolbar is displayed in the right state
2076        assert_eq!(
2077            diff_toolbar.read_with(cx, |toolbar, cx| toolbar.location(cx)),
2078            ToolbarItemLocation::PrimaryRight
2079        );
2080        assert!(diff_toolbar.read_with(cx, |toolbar, _cx| matches!(
2081            toolbar.active_item,
2082            Some(AgentDiffToolbarItem::Editor {
2083                state: EditorState::Reviewing,
2084                ..
2085            })
2086        )));
2087
2088        // The toolbar respects its setting
2089        override_toolbar_agent_review_setting(false, cx);
2090        assert_eq!(
2091            diff_toolbar.read_with(cx, |toolbar, cx| toolbar.location(cx)),
2092            ToolbarItemLocation::Hidden
2093        );
2094        override_toolbar_agent_review_setting(true, cx);
2095        assert_eq!(
2096            diff_toolbar.read_with(cx, |toolbar, cx| toolbar.location(cx)),
2097            ToolbarItemLocation::PrimaryRight
2098        );
2099
2100        // After keeping a hunk, the cursor should be positioned on the second hunk.
2101        workspace.update(cx, |_, cx| {
2102            cx.dispatch_action(&Keep);
2103        });
2104        cx.run_until_parked();
2105        assert_eq!(
2106            editor1.read_with(cx, |editor, cx| editor.text(cx)),
2107            "abc\ndEf\nghi\njkl\njkL\nmno\npqr\nPqr\nstu\nvwx\nvWx\nyz"
2108        );
2109        assert_eq!(
2110            editor1
2111                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
2112                .range(),
2113            Point::new(3, 0)..Point::new(3, 0)
2114        );
2115
2116        // Rejecting a hunk also moves the cursor to the next hunk, possibly cycling if it's at the end.
2117        editor1.update_in(cx, |editor, window, cx| {
2118            editor.change_selections(None, window, cx, |selections| {
2119                selections.select_ranges([Point::new(10, 0)..Point::new(10, 0)])
2120            });
2121        });
2122        workspace.update(cx, |_, cx| {
2123            cx.dispatch_action(&Reject);
2124        });
2125        cx.run_until_parked();
2126        assert_eq!(
2127            editor1.read_with(cx, |editor, cx| editor.text(cx)),
2128            "abc\ndEf\nghi\njkl\njkL\nmno\npqr\nPqr\nstu\nvwx\nyz"
2129        );
2130        assert_eq!(
2131            editor1
2132                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
2133                .range(),
2134            Point::new(3, 0)..Point::new(3, 0)
2135        );
2136
2137        // Keeping a range that doesn't intersect the current selection doesn't move it.
2138        editor1.update_in(cx, |editor, window, cx| {
2139            let buffer = editor.buffer().read(cx);
2140            let position = buffer.read(cx).anchor_before(Point::new(7, 0));
2141            let snapshot = buffer.snapshot(cx);
2142            keep_edits_in_ranges(
2143                editor,
2144                &snapshot,
2145                &thread,
2146                vec![position..position],
2147                window,
2148                cx,
2149            )
2150        });
2151        cx.run_until_parked();
2152        assert_eq!(
2153            editor1.read_with(cx, |editor, cx| editor.text(cx)),
2154            "abc\ndEf\nghi\njkl\njkL\nmno\nPqr\nstu\nvwx\nyz"
2155        );
2156        assert_eq!(
2157            editor1
2158                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
2159                .range(),
2160            Point::new(3, 0)..Point::new(3, 0)
2161        );
2162
2163        // Reviewing the last change opens the next changed buffer
2164        workspace
2165            .update_in(cx, |workspace, window, cx| {
2166                AgentDiff::global(cx).update(cx, |agent_diff, cx| {
2167                    agent_diff.review_in_active_editor(workspace, AgentDiff::keep, window, cx)
2168                })
2169            })
2170            .unwrap()
2171            .await
2172            .unwrap();
2173
2174        cx.run_until_parked();
2175
2176        let editor2 = workspace.update(cx, |workspace, cx| {
2177            workspace.active_item_as::<Editor>(cx).unwrap()
2178        });
2179
2180        let editor2_path = editor2
2181            .read_with(cx, |editor, cx| editor.project_path(cx))
2182            .unwrap();
2183        assert_eq!(editor2_path, buffer_path2);
2184
2185        assert_eq!(
2186            editor2.read_with(cx, |editor, cx| editor.text(cx)),
2187            "abc\nAbc\ndef\nghi\ngHi"
2188        );
2189        assert_eq!(
2190            editor2
2191                .update(cx, |editor, cx| editor.selections.newest::<Point>(cx))
2192                .range(),
2193            Point::new(0, 0)..Point::new(0, 0)
2194        );
2195
2196        // Editor 1 toolbar is hidden since all changes have been reviewed
2197        workspace.update_in(cx, |workspace, window, cx| {
2198            workspace.activate_item(&editor1, true, true, window, cx)
2199        });
2200
2201        assert!(diff_toolbar.read_with(cx, |toolbar, _cx| matches!(
2202            toolbar.active_item,
2203            Some(AgentDiffToolbarItem::Editor {
2204                state: EditorState::Idle,
2205                ..
2206            })
2207        )));
2208        assert_eq!(
2209            diff_toolbar.read_with(cx, |toolbar, cx| toolbar.location(cx)),
2210            ToolbarItemLocation::Hidden
2211        );
2212    }
2213
2214    fn override_toolbar_agent_review_setting(active: bool, cx: &mut VisualTestContext) {
2215        cx.update(|_window, cx| {
2216            SettingsStore::update_global(cx, |store, _cx| {
2217                let mut editor_settings = store.get::<EditorSettings>(None).clone();
2218                editor_settings.toolbar.agent_review = active;
2219                store.override_global(editor_settings);
2220            })
2221        });
2222        cx.run_until_parked();
2223    }
2224}