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