1mod thread_switcher;
   2
   3use acp_thread::ThreadStatus;
   4use action_log::DiffStats;
   5use agent_client_protocol::{self as acp};
   6use agent_settings::AgentSettings;
   7use agent_ui::thread_metadata_store::{ThreadMetadata, ThreadMetadataStore};
   8use agent_ui::threads_archive_view::{
   9    ThreadsArchiveView, ThreadsArchiveViewEvent, format_history_entry_timestamp,
  10};
  11use agent_ui::{AcpThreadImportOnboarding, ThreadImportModal};
  12use agent_ui::{
  13    Agent, AgentPanel, AgentPanelEvent, DEFAULT_THREAD_TITLE, NewThread, RemoveSelectedThread,
  14};
  15use chrono::{DateTime, Utc};
  16use editor::Editor;
  17use feature_flags::{AgentV2FeatureFlag, FeatureFlagViewExt as _};
  18use gpui::{
  19    Action as _, AnyElement, App, Context, Entity, FocusHandle, Focusable, KeyContext, ListState,
  20    Pixels, Render, SharedString, WeakEntity, Window, WindowHandle, linear_color_stop,
  21    linear_gradient, list, prelude::*, px,
  22};
  23use menu::{
  24    Cancel, Confirm, SelectChild, SelectFirst, SelectLast, SelectNext, SelectParent, SelectPrevious,
  25};
  26use project::{AgentId, AgentRegistryStore, Event as ProjectEvent, linked_worktree_short_name};
  27use recent_projects::sidebar_recent_projects::SidebarRecentProjects;
  28use remote::RemoteConnectionOptions;
  29use ui::utils::platform_title_bar_height;
  30
  31use serde::{Deserialize, Serialize};
  32use settings::Settings as _;
  33use std::collections::{HashMap, HashSet};
  34use std::mem;
  35use std::rc::Rc;
  36use theme::ActiveTheme;
  37use ui::{
  38    AgentThreadStatus, CommonAnimationExt, ContextMenu, Divider, HighlightedLabel, KeyBinding,
  39    PopoverMenu, PopoverMenuHandle, Tab, ThreadItem, ThreadItemWorktreeInfo, TintColor, Tooltip,
  40    WithScrollbar, prelude::*,
  41};
  42use util::ResultExt as _;
  43use util::path_list::{PathList, SerializedPathList};
  44use workspace::{
  45    AddFolderToProject, CloseWindow, FocusWorkspaceSidebar, MultiWorkspace, MultiWorkspaceEvent,
  46    Open, Sidebar as WorkspaceSidebar, SidebarSide, ToggleWorkspaceSidebar, Workspace, WorkspaceId,
  47    sidebar_side_context_menu,
  48};
  49
  50use zed_actions::OpenRecent;
  51use zed_actions::editor::{MoveDown, MoveUp};
  52
  53use zed_actions::agents_sidebar::{FocusSidebarFilter, ToggleThreadSwitcher};
  54
  55use crate::thread_switcher::{ThreadSwitcher, ThreadSwitcherEntry, ThreadSwitcherEvent};
  56
  57use crate::project_group_builder::ProjectGroupBuilder;
  58
  59mod project_group_builder;
  60
  61#[cfg(test)]
  62mod sidebar_tests;
  63
  64gpui::actions!(
  65    agents_sidebar,
  66    [
  67        /// Creates a new thread in the currently selected or active project group.
  68        NewThreadInGroup,
  69        /// Toggles between the thread list and the archive view.
  70        ToggleArchive,
  71    ]
  72);
  73
  74gpui::actions!(
  75    dev,
  76    [
  77        /// Dumps multi-workspace state (projects, worktrees, active threads) into a new buffer.
  78        DumpWorkspaceInfo,
  79    ]
  80);
  81
  82const DEFAULT_WIDTH: Pixels = px(300.0);
  83const MIN_WIDTH: Pixels = px(200.0);
  84const MAX_WIDTH: Pixels = px(800.0);
  85const DEFAULT_THREADS_SHOWN: usize = 5;
  86
  87#[derive(Default, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
  88enum SerializedSidebarView {
  89    #[default]
  90    ThreadList,
  91    Archive,
  92}
  93
  94#[derive(Default, Serialize, Deserialize)]
  95struct SerializedSidebar {
  96    #[serde(default)]
  97    width: Option<f32>,
  98    #[serde(default)]
  99    collapsed_groups: Vec<SerializedPathList>,
 100    #[serde(default)]
 101    expanded_groups: Vec<(SerializedPathList, usize)>,
 102    #[serde(default)]
 103    active_view: SerializedSidebarView,
 104}
 105
 106#[derive(Debug, Default)]
 107enum SidebarView {
 108    #[default]
 109    ThreadList,
 110    Archive(Entity<ThreadsArchiveView>),
 111}
 112
 113#[derive(Clone, Debug)]
 114enum ActiveEntry {
 115    Thread {
 116        session_id: acp::SessionId,
 117        workspace: Entity<Workspace>,
 118    },
 119    Draft(Entity<Workspace>),
 120}
 121
 122impl ActiveEntry {
 123    fn workspace(&self) -> &Entity<Workspace> {
 124        match self {
 125            ActiveEntry::Thread { workspace, .. } => workspace,
 126            ActiveEntry::Draft(workspace) => workspace,
 127        }
 128    }
 129
 130    fn is_active_thread(&self, session_id: &acp::SessionId) -> bool {
 131        matches!(self, ActiveEntry::Thread { session_id: id, .. } if id == session_id)
 132    }
 133
 134    fn matches_entry(&self, entry: &ListEntry) -> bool {
 135        match (self, entry) {
 136            (ActiveEntry::Thread { session_id, .. }, ListEntry::Thread(thread)) => {
 137                thread.metadata.session_id == *session_id
 138            }
 139            (
 140                ActiveEntry::Draft(workspace),
 141                ListEntry::NewThread {
 142                    workspace: entry_workspace,
 143                    ..
 144                },
 145            ) => workspace == entry_workspace,
 146            _ => false,
 147        }
 148    }
 149}
 150
 151#[derive(Clone, Debug)]
 152struct ActiveThreadInfo {
 153    session_id: acp::SessionId,
 154    title: SharedString,
 155    status: AgentThreadStatus,
 156    icon: IconName,
 157    icon_from_external_svg: Option<SharedString>,
 158    is_background: bool,
 159    is_title_generating: bool,
 160    diff_stats: DiffStats,
 161}
 162
 163#[derive(Clone)]
 164enum ThreadEntryWorkspace {
 165    Open(Entity<Workspace>),
 166    Closed(PathList),
 167}
 168
 169#[derive(Clone)]
 170struct WorktreeInfo {
 171    name: SharedString,
 172    full_path: SharedString,
 173    highlight_positions: Vec<usize>,
 174}
 175
 176#[derive(Clone)]
 177struct ThreadEntry {
 178    metadata: ThreadMetadata,
 179    icon: IconName,
 180    icon_from_external_svg: Option<SharedString>,
 181    status: AgentThreadStatus,
 182    workspace: ThreadEntryWorkspace,
 183    is_live: bool,
 184    is_background: bool,
 185    is_title_generating: bool,
 186    highlight_positions: Vec<usize>,
 187    worktrees: Vec<WorktreeInfo>,
 188    diff_stats: DiffStats,
 189}
 190
 191impl ThreadEntry {
 192    /// Updates this thread entry with active thread information.
 193    ///
 194    /// The existing [`ThreadEntry`] was likely deserialized from the database
 195    /// but if we have a correspond thread already loaded we want to apply the
 196    /// live information.
 197    fn apply_active_info(&mut self, info: &ActiveThreadInfo) {
 198        self.metadata.title = info.title.clone();
 199        self.status = info.status;
 200        self.icon = info.icon;
 201        self.icon_from_external_svg = info.icon_from_external_svg.clone();
 202        self.is_live = true;
 203        self.is_background = info.is_background;
 204        self.is_title_generating = info.is_title_generating;
 205        self.diff_stats = info.diff_stats;
 206    }
 207}
 208
 209#[derive(Clone)]
 210enum ListEntry {
 211    ProjectHeader {
 212        path_list: PathList,
 213        label: SharedString,
 214        workspace: Entity<Workspace>,
 215        highlight_positions: Vec<usize>,
 216        has_running_threads: bool,
 217        waiting_thread_count: usize,
 218        is_active: bool,
 219    },
 220    Thread(ThreadEntry),
 221    ViewMore {
 222        path_list: PathList,
 223        is_fully_expanded: bool,
 224    },
 225    NewThread {
 226        path_list: PathList,
 227        workspace: Entity<Workspace>,
 228        worktrees: Vec<WorktreeInfo>,
 229    },
 230}
 231
 232#[cfg(test)]
 233impl ListEntry {
 234    fn workspace(&self) -> Option<Entity<Workspace>> {
 235        match self {
 236            ListEntry::ProjectHeader { workspace, .. } => Some(workspace.clone()),
 237            ListEntry::Thread(thread_entry) => match &thread_entry.workspace {
 238                ThreadEntryWorkspace::Open(workspace) => Some(workspace.clone()),
 239                ThreadEntryWorkspace::Closed(_) => None,
 240            },
 241            ListEntry::ViewMore { .. } => None,
 242            ListEntry::NewThread { workspace, .. } => Some(workspace.clone()),
 243        }
 244    }
 245
 246    fn session_id(&self) -> Option<&acp::SessionId> {
 247        match self {
 248            ListEntry::Thread(thread_entry) => Some(&thread_entry.metadata.session_id),
 249            _ => None,
 250        }
 251    }
 252}
 253
 254impl From<ThreadEntry> for ListEntry {
 255    fn from(thread: ThreadEntry) -> Self {
 256        ListEntry::Thread(thread)
 257    }
 258}
 259
 260#[derive(Default)]
 261struct SidebarContents {
 262    entries: Vec<ListEntry>,
 263    notified_threads: HashSet<acp::SessionId>,
 264    project_header_indices: Vec<usize>,
 265    has_open_projects: bool,
 266}
 267
 268impl SidebarContents {
 269    fn is_thread_notified(&self, session_id: &acp::SessionId) -> bool {
 270        self.notified_threads.contains(session_id)
 271    }
 272}
 273
 274fn fuzzy_match_positions(query: &str, candidate: &str) -> Option<Vec<usize>> {
 275    let mut positions = Vec::new();
 276    let mut query_chars = query.chars().peekable();
 277
 278    for (byte_idx, candidate_char) in candidate.char_indices() {
 279        if let Some(&query_char) = query_chars.peek() {
 280            if candidate_char.eq_ignore_ascii_case(&query_char) {
 281                positions.push(byte_idx);
 282                query_chars.next();
 283            }
 284        } else {
 285            break;
 286        }
 287    }
 288
 289    if query_chars.peek().is_none() {
 290        Some(positions)
 291    } else {
 292        None
 293    }
 294}
 295
 296// TODO: The mapping from workspace root paths to git repositories needs a
 297// unified approach across the codebase: this function, `AgentPanel::classify_worktrees`,
 298// thread persistence (which PathList is saved to the database), and thread
 299// querying (which PathList is used to read threads back). All of these need
 300// to agree on how repos are resolved for a given workspace, especially in
 301// multi-root and nested-repo configurations.
 302fn root_repository_snapshots(
 303    workspace: &Entity<Workspace>,
 304    cx: &App,
 305) -> impl Iterator<Item = project::git_store::RepositorySnapshot> {
 306    let path_list = workspace_path_list(workspace, cx);
 307    let project = workspace.read(cx).project().read(cx);
 308    project.repositories(cx).values().filter_map(move |repo| {
 309        let snapshot = repo.read(cx).snapshot();
 310        let is_root = path_list
 311            .paths()
 312            .iter()
 313            .any(|p| p.as_path() == snapshot.work_directory_abs_path.as_ref());
 314        is_root.then_some(snapshot)
 315    })
 316}
 317
 318fn workspace_path_list(workspace: &Entity<Workspace>, cx: &App) -> PathList {
 319    PathList::new(&workspace.read(cx).root_paths(cx))
 320}
 321
 322/// Derives worktree display info from a thread's stored path list.
 323///
 324/// For each path in the thread's `folder_paths` that canonicalizes to a
 325/// different path (i.e. it's a git worktree), produces a [`WorktreeInfo`]
 326/// with the short worktree name and full path.
 327fn worktree_info_from_thread_paths(
 328    folder_paths: &PathList,
 329    project_groups: &ProjectGroupBuilder,
 330) -> Vec<WorktreeInfo> {
 331    folder_paths
 332        .paths()
 333        .iter()
 334        .filter_map(|path| {
 335            let canonical = project_groups.canonicalize_path(path);
 336            if canonical != path.as_path() {
 337                Some(WorktreeInfo {
 338                    name: linked_worktree_short_name(canonical, path).unwrap_or_default(),
 339                    full_path: SharedString::from(path.display().to_string()),
 340                    highlight_positions: Vec::new(),
 341                })
 342            } else {
 343                None
 344            }
 345        })
 346        .collect()
 347}
 348
 349/// The sidebar re-derives its entire entry list from scratch on every
 350/// change via `update_entries` → `rebuild_contents`. Avoid adding
 351/// incremental or inter-event coordination state — if something can
 352/// be computed from the current world state, compute it in the rebuild.
 353pub struct Sidebar {
 354    multi_workspace: WeakEntity<MultiWorkspace>,
 355    width: Pixels,
 356    focus_handle: FocusHandle,
 357    filter_editor: Entity<Editor>,
 358    list_state: ListState,
 359    contents: SidebarContents,
 360    /// The index of the list item that currently has the keyboard focus
 361    ///
 362    /// Note: This is NOT the same as the active item.
 363    selection: Option<usize>,
 364    /// Tracks which sidebar entry is currently active (highlighted).
 365    active_entry: Option<ActiveEntry>,
 366    hovered_thread_index: Option<usize>,
 367    collapsed_groups: HashSet<PathList>,
 368    expanded_groups: HashMap<PathList, usize>,
 369    /// Updated only in response to explicit user actions (clicking a
 370    /// thread, confirming in the thread switcher, etc.) — never from
 371    /// background data changes. Used to sort the thread switcher popup.
 372    thread_last_accessed: HashMap<acp::SessionId, DateTime<Utc>>,
 373    /// Updated when the user presses a key to send or queue a message.
 374    /// Used for sorting threads in the sidebar and as a secondary sort
 375    /// key in the thread switcher.
 376    thread_last_message_sent_or_queued: HashMap<acp::SessionId, DateTime<Utc>>,
 377    thread_switcher: Option<Entity<ThreadSwitcher>>,
 378    _thread_switcher_subscriptions: Vec<gpui::Subscription>,
 379    view: SidebarView,
 380    recent_projects_popover_handle: PopoverMenuHandle<SidebarRecentProjects>,
 381    project_header_menu_ix: Option<usize>,
 382    _subscriptions: Vec<gpui::Subscription>,
 383    _draft_observation: Option<gpui::Subscription>,
 384}
 385
 386impl Sidebar {
 387    pub fn new(
 388        multi_workspace: Entity<MultiWorkspace>,
 389        window: &mut Window,
 390        cx: &mut Context<Self>,
 391    ) -> Self {
 392        let focus_handle = cx.focus_handle();
 393        cx.on_focus_in(&focus_handle, window, Self::focus_in)
 394            .detach();
 395
 396        let filter_editor = cx.new(|cx| {
 397            let mut editor = Editor::single_line(window, cx);
 398            editor.set_use_modal_editing(true);
 399            editor.set_placeholder_text("Search…", window, cx);
 400            editor
 401        });
 402
 403        cx.subscribe_in(
 404            &multi_workspace,
 405            window,
 406            |this, _multi_workspace, event: &MultiWorkspaceEvent, window, cx| match event {
 407                MultiWorkspaceEvent::ActiveWorkspaceChanged => {
 408                    this.observe_draft_editor(cx);
 409                    this.update_entries(cx);
 410                }
 411                MultiWorkspaceEvent::WorkspaceAdded(workspace) => {
 412                    this.subscribe_to_workspace(workspace, window, cx);
 413                    this.update_entries(cx);
 414                }
 415                MultiWorkspaceEvent::WorkspaceRemoved => {
 416                    this.update_entries(cx);
 417                }
 418            },
 419        )
 420        .detach();
 421
 422        cx.subscribe(&filter_editor, |this: &mut Self, _, event, cx| {
 423            if let editor::EditorEvent::BufferEdited = event {
 424                let query = this.filter_editor.read(cx).text(cx);
 425                if !query.is_empty() {
 426                    this.selection.take();
 427                }
 428                this.update_entries(cx);
 429                if !query.is_empty() {
 430                    this.select_first_entry();
 431                }
 432            }
 433        })
 434        .detach();
 435
 436        cx.observe(&ThreadMetadataStore::global(cx), |this, _store, cx| {
 437            this.update_entries(cx);
 438        })
 439        .detach();
 440
 441        cx.observe_flag::<AgentV2FeatureFlag, _>(window, |_is_enabled, this, _window, cx| {
 442            this.update_entries(cx);
 443        })
 444        .detach();
 445
 446        let workspaces = multi_workspace.read(cx).workspaces().collect::<Vec<_>>();
 447        cx.defer_in(window, move |this, window, cx| {
 448            for workspace in &workspaces {
 449                this.subscribe_to_workspace(workspace, window, cx);
 450            }
 451            this.update_entries(cx);
 452        });
 453
 454        Self {
 455            multi_workspace: multi_workspace.downgrade(),
 456            width: DEFAULT_WIDTH,
 457            focus_handle,
 458            filter_editor,
 459            list_state: ListState::new(0, gpui::ListAlignment::Top, px(1000.)),
 460            contents: SidebarContents::default(),
 461            selection: None,
 462            active_entry: None,
 463            hovered_thread_index: None,
 464            collapsed_groups: HashSet::new(),
 465            expanded_groups: HashMap::new(),
 466            thread_last_accessed: HashMap::new(),
 467            thread_last_message_sent_or_queued: HashMap::new(),
 468            thread_switcher: None,
 469            _thread_switcher_subscriptions: Vec::new(),
 470            view: SidebarView::default(),
 471            recent_projects_popover_handle: PopoverMenuHandle::default(),
 472            project_header_menu_ix: None,
 473            _subscriptions: Vec::new(),
 474            _draft_observation: None,
 475        }
 476    }
 477
 478    fn serialize(&mut self, cx: &mut Context<Self>) {
 479        cx.emit(workspace::SidebarEvent::SerializeNeeded);
 480    }
 481
 482    fn active_entry_workspace(&self) -> Option<&Entity<Workspace>> {
 483        self.active_entry.as_ref().map(|entry| entry.workspace())
 484    }
 485
 486    fn is_active_workspace(&self, workspace: &Entity<Workspace>, cx: &App) -> bool {
 487        self.multi_workspace
 488            .upgrade()
 489            .map_or(false, |mw| mw.read(cx).workspace() == workspace)
 490    }
 491
 492    fn subscribe_to_workspace(
 493        &mut self,
 494        workspace: &Entity<Workspace>,
 495        window: &mut Window,
 496        cx: &mut Context<Self>,
 497    ) {
 498        let project = workspace.read(cx).project().clone();
 499        cx.subscribe_in(
 500            &project,
 501            window,
 502            |this, _project, event, _window, cx| match event {
 503                ProjectEvent::WorktreeAdded(_)
 504                | ProjectEvent::WorktreeRemoved(_)
 505                | ProjectEvent::WorktreeOrderChanged => {
 506                    this.update_entries(cx);
 507                }
 508                _ => {}
 509            },
 510        )
 511        .detach();
 512
 513        let git_store = workspace.read(cx).project().read(cx).git_store().clone();
 514        cx.subscribe_in(
 515            &git_store,
 516            window,
 517            |this, _, event: &project::git_store::GitStoreEvent, _window, cx| {
 518                if matches!(
 519                    event,
 520                    project::git_store::GitStoreEvent::RepositoryUpdated(
 521                        _,
 522                        project::git_store::RepositoryEvent::GitWorktreeListChanged,
 523                        _,
 524                    )
 525                ) {
 526                    this.update_entries(cx);
 527                }
 528            },
 529        )
 530        .detach();
 531
 532        cx.subscribe_in(
 533            workspace,
 534            window,
 535            |this, _workspace, event: &workspace::Event, window, cx| {
 536                if let workspace::Event::PanelAdded(view) = event {
 537                    if let Ok(agent_panel) = view.clone().downcast::<AgentPanel>() {
 538                        this.subscribe_to_agent_panel(&agent_panel, window, cx);
 539                    }
 540                }
 541            },
 542        )
 543        .detach();
 544
 545        self.observe_docks(workspace, cx);
 546
 547        if let Some(agent_panel) = workspace.read(cx).panel::<AgentPanel>(cx) {
 548            self.subscribe_to_agent_panel(&agent_panel, window, cx);
 549            self.observe_draft_editor(cx);
 550        }
 551    }
 552
 553    fn subscribe_to_agent_panel(
 554        &mut self,
 555        agent_panel: &Entity<AgentPanel>,
 556        window: &mut Window,
 557        cx: &mut Context<Self>,
 558    ) {
 559        cx.subscribe_in(
 560            agent_panel,
 561            window,
 562            |this, agent_panel, event: &AgentPanelEvent, _window, cx| match event {
 563                AgentPanelEvent::ActiveViewChanged => {
 564                    let is_new_draft = agent_panel
 565                        .read(cx)
 566                        .active_conversation_view()
 567                        .is_some_and(|cv| cv.read(cx).parent_id(cx).is_none());
 568                    if is_new_draft {
 569                        if let Some(active_workspace) = this
 570                            .multi_workspace
 571                            .upgrade()
 572                            .map(|mw| mw.read(cx).workspace().clone())
 573                        {
 574                            this.active_entry = Some(ActiveEntry::Draft(active_workspace));
 575                        }
 576                    }
 577                    this.observe_draft_editor(cx);
 578                    this.update_entries(cx);
 579                }
 580                AgentPanelEvent::ThreadFocused | AgentPanelEvent::BackgroundThreadChanged => {
 581                    this.update_entries(cx);
 582                }
 583                AgentPanelEvent::MessageSentOrQueued { session_id } => {
 584                    this.record_thread_message_sent(session_id);
 585                    this.update_entries(cx);
 586                }
 587            },
 588        )
 589        .detach();
 590    }
 591
 592    fn observe_docks(&mut self, workspace: &Entity<Workspace>, cx: &mut Context<Self>) {
 593        let docks: Vec<_> = workspace
 594            .read(cx)
 595            .all_docks()
 596            .into_iter()
 597            .cloned()
 598            .collect();
 599        let workspace = workspace.downgrade();
 600        for dock in docks {
 601            let workspace = workspace.clone();
 602            cx.observe(&dock, move |this, _dock, cx| {
 603                let Some(workspace) = workspace.upgrade() else {
 604                    return;
 605                };
 606                if !this.is_active_workspace(&workspace, cx) {
 607                    return;
 608                }
 609
 610                cx.notify();
 611            })
 612            .detach();
 613        }
 614    }
 615
 616    fn observe_draft_editor(&mut self, cx: &mut Context<Self>) {
 617        self._draft_observation = self
 618            .multi_workspace
 619            .upgrade()
 620            .and_then(|mw| {
 621                let ws = mw.read(cx).workspace();
 622                ws.read(cx).panel::<AgentPanel>(cx)
 623            })
 624            .and_then(|panel| {
 625                let cv = panel.read(cx).active_conversation_view()?;
 626                let tv = cv.read(cx).active_thread()?;
 627                Some(tv.read(cx).message_editor.clone())
 628            })
 629            .map(|editor| {
 630                cx.observe(&editor, |_this, _editor, cx| {
 631                    cx.notify();
 632                })
 633            });
 634    }
 635
 636    fn active_draft_text(&self, cx: &App) -> Option<SharedString> {
 637        let mw = self.multi_workspace.upgrade()?;
 638        let workspace = mw.read(cx).workspace();
 639        let panel = workspace.read(cx).panel::<AgentPanel>(cx)?;
 640        let conversation_view = panel.read(cx).active_conversation_view()?;
 641        let thread_view = conversation_view.read(cx).active_thread()?;
 642        let raw = thread_view.read(cx).message_editor.read(cx).text(cx);
 643        let cleaned = Self::clean_mention_links(&raw);
 644        let mut text: String = cleaned.split_whitespace().collect::<Vec<_>>().join(" ");
 645        if text.is_empty() {
 646            None
 647        } else {
 648            const MAX_CHARS: usize = 250;
 649            if let Some((truncate_at, _)) = text.char_indices().nth(MAX_CHARS) {
 650                text.truncate(truncate_at);
 651            }
 652            Some(text.into())
 653        }
 654    }
 655
 656    fn clean_mention_links(input: &str) -> String {
 657        let mut result = String::with_capacity(input.len());
 658        let mut remaining = input;
 659
 660        while let Some(start) = remaining.find("[@") {
 661            result.push_str(&remaining[..start]);
 662            let after_bracket = &remaining[start + 1..]; // skip '['
 663            if let Some(close_bracket) = after_bracket.find("](") {
 664                let mention = &after_bracket[..close_bracket]; // "@something"
 665                let after_link_start = &after_bracket[close_bracket + 2..]; // after "]("
 666                if let Some(close_paren) = after_link_start.find(')') {
 667                    result.push_str(mention);
 668                    remaining = &after_link_start[close_paren + 1..];
 669                    continue;
 670                }
 671            }
 672            // Couldn't parse full link syntax — emit the literal "[@" and move on.
 673            result.push_str("[@");
 674            remaining = &remaining[start + 2..];
 675        }
 676        result.push_str(remaining);
 677        result
 678    }
 679
 680    /// Rebuilds the sidebar contents from current workspace and thread state.
 681    ///
 682    /// Uses [`ProjectGroupBuilder`] to group workspaces by their main git
 683    /// repository, then populates thread entries from the metadata store and
 684    /// merges live thread info from active agent panels.
 685    ///
 686    /// Aim for a single forward pass over workspaces and threads plus an
 687    /// O(T log T) sort. Avoid adding extra scans over the data.
 688    ///
 689    /// Properties:
 690    ///
 691    /// - Should always show every workspace in the multiworkspace
 692    ///     - If you have no threads, and two workspaces for the worktree and the main workspace, make sure at least one is shown
 693    /// - Should always show every thread, associated with each workspace in the multiworkspace
 694    /// - After every build_contents, our "active" state should exactly match the current workspace's, current agent panel's current thread.
 695    fn rebuild_contents(&mut self, cx: &App) {
 696        let Some(multi_workspace) = self.multi_workspace.upgrade() else {
 697            return;
 698        };
 699        let mw = multi_workspace.read(cx);
 700        let workspaces = mw.workspaces().collect::<Vec<_>>();
 701        let active_workspace = Some(mw.active_workspace());
 702
 703        let agent_server_store = workspaces
 704            .first()
 705            .map(|ws| ws.read(cx).project().read(cx).agent_server_store().clone());
 706
 707        let query = self.filter_editor.read(cx).text(cx);
 708
 709        // Derive active_entry from the active workspace's agent panel.
 710        // Draft is checked first because a conversation can have a session_id
 711        // before any messages are sent. However, a thread that's still loading
 712        // also appears as a "draft" (no messages yet), so when we already have
 713        // an eager Thread write for this workspace we preserve it. A session_id
 714        // on a non-draft is a positive Thread signal. The remaining case
 715        // (conversation exists, not draft, no session_id) is a genuine
 716        // mid-load — keep the previous value.
 717        if let Some(active_ws) = &active_workspace {
 718            if let Some(panel) = active_ws.read(cx).panel::<AgentPanel>(cx) {
 719                if panel.read(cx).active_thread_is_draft(cx)
 720                    || panel.read(cx).active_conversation_view().is_none()
 721                {
 722                    let preserving_thread =
 723                        matches!(&self.active_entry, Some(ActiveEntry::Thread { .. }))
 724                            && self.active_entry_workspace() == Some(active_ws);
 725                    if !preserving_thread {
 726                        self.active_entry = Some(ActiveEntry::Draft(active_ws.clone()));
 727                    }
 728                } else if let Some(session_id) = panel
 729                    .read(cx)
 730                    .active_conversation_view()
 731                    .and_then(|cv| cv.read(cx).parent_id(cx))
 732                {
 733                    self.active_entry = Some(ActiveEntry::Thread {
 734                        session_id,
 735                        workspace: active_ws.clone(),
 736                    });
 737                }
 738                // else: conversation exists, not a draft, but no session_id
 739                // yet — thread is mid-load. Keep previous value.
 740            }
 741        }
 742
 743        let previous = mem::take(&mut self.contents);
 744
 745        let old_statuses: HashMap<acp::SessionId, AgentThreadStatus> = previous
 746            .entries
 747            .iter()
 748            .filter_map(|entry| match entry {
 749                ListEntry::Thread(thread) if thread.is_live => {
 750                    Some((thread.metadata.session_id.clone(), thread.status))
 751                }
 752                _ => None,
 753            })
 754            .collect();
 755
 756        let mut entries = Vec::new();
 757        let mut notified_threads = previous.notified_threads;
 758        let mut current_session_ids: HashSet<acp::SessionId> = HashSet::new();
 759        let mut project_header_indices: Vec<usize> = Vec::new();
 760
 761        // Use ProjectGroupBuilder to canonically group workspaces by their
 762        // main git repository. This replaces the manual absorbed-workspace
 763        // detection that was here before.
 764        let project_groups = ProjectGroupBuilder::from_multiworkspace(mw, cx);
 765
 766        let has_open_projects = workspaces
 767            .iter()
 768            .any(|ws| !workspace_path_list(ws, cx).paths().is_empty());
 769
 770        let resolve_agent_icon = |agent_id: &AgentId| -> (IconName, Option<SharedString>) {
 771            let agent = Agent::from(agent_id.clone());
 772            let icon = match agent {
 773                Agent::NativeAgent => IconName::ZedAgent,
 774                Agent::Custom { .. } => IconName::Terminal,
 775            };
 776            let icon_from_external_svg = agent_server_store
 777                .as_ref()
 778                .and_then(|store| store.read(cx).agent_icon(&agent_id));
 779            (icon, icon_from_external_svg)
 780        };
 781
 782        for (group_name, group) in project_groups.groups() {
 783            let path_list = group_name.path_list().clone();
 784            if path_list.paths().is_empty() {
 785                continue;
 786            }
 787
 788            let label = group_name.display_name();
 789
 790            let is_collapsed = self.collapsed_groups.contains(&path_list);
 791            let should_load_threads = !is_collapsed || !query.is_empty();
 792
 793            let is_active = active_workspace
 794                .as_ref()
 795                .is_some_and(|active| group.workspaces.contains(active));
 796
 797            // Pick a representative workspace for the group: prefer the active
 798            // workspace if it belongs to this group, otherwise use the main
 799            // repo workspace (not a linked worktree).
 800            let representative_workspace = active_workspace
 801                .as_ref()
 802                .filter(|_| is_active)
 803                .unwrap_or_else(|| group.main_workspace(cx));
 804
 805            // Collect live thread infos from all workspaces in this group.
 806            let live_infos: Vec<_> = group
 807                .workspaces
 808                .iter()
 809                .flat_map(|ws| all_thread_infos_for_workspace(ws, cx))
 810                .collect();
 811
 812            let mut threads: Vec<ThreadEntry> = Vec::new();
 813            let mut threadless_workspaces: Vec<(Entity<Workspace>, Vec<WorktreeInfo>)> = Vec::new();
 814            let mut has_running_threads = false;
 815            let mut waiting_thread_count: usize = 0;
 816
 817            if should_load_threads {
 818                let mut seen_session_ids: HashSet<acp::SessionId> = HashSet::new();
 819                let thread_store = ThreadMetadataStore::global(cx);
 820
 821                // Load threads from each workspace in the group.
 822                for workspace in &group.workspaces {
 823                    let ws_path_list = workspace_path_list(workspace, cx);
 824                    let mut workspace_rows = thread_store
 825                        .read(cx)
 826                        .entries_for_path(&ws_path_list)
 827                        .cloned()
 828                        .peekable();
 829                    if workspace_rows.peek().is_none() {
 830                        let worktrees =
 831                            worktree_info_from_thread_paths(&ws_path_list, &project_groups);
 832                        threadless_workspaces.push((workspace.clone(), worktrees));
 833                    }
 834                    for row in workspace_rows {
 835                        if !seen_session_ids.insert(row.session_id.clone()) {
 836                            continue;
 837                        }
 838                        let (icon, icon_from_external_svg) = resolve_agent_icon(&row.agent_id);
 839                        let worktrees =
 840                            worktree_info_from_thread_paths(&row.folder_paths, &project_groups);
 841                        threads.push(ThreadEntry {
 842                            metadata: row,
 843                            icon,
 844                            icon_from_external_svg,
 845                            status: AgentThreadStatus::default(),
 846                            workspace: ThreadEntryWorkspace::Open(workspace.clone()),
 847                            is_live: false,
 848                            is_background: false,
 849                            is_title_generating: false,
 850                            highlight_positions: Vec::new(),
 851                            worktrees,
 852                            diff_stats: DiffStats::default(),
 853                        });
 854                    }
 855                }
 856
 857                // Load threads from linked git worktrees whose
 858                // canonical paths belong to this group.
 859                let linked_worktree_queries = group
 860                    .workspaces
 861                    .iter()
 862                    .flat_map(|ws| root_repository_snapshots(ws, cx))
 863                    .filter(|snapshot| !snapshot.is_linked_worktree())
 864                    .flat_map(|snapshot| {
 865                        snapshot
 866                            .linked_worktrees()
 867                            .iter()
 868                            .filter(|wt| {
 869                                project_groups.group_owns_worktree(group, &path_list, &wt.path)
 870                            })
 871                            .map(|wt| PathList::new(std::slice::from_ref(&wt.path)))
 872                            .collect::<Vec<_>>()
 873                    });
 874
 875                for worktree_path_list in linked_worktree_queries {
 876                    for row in thread_store
 877                        .read(cx)
 878                        .entries_for_path(&worktree_path_list)
 879                        .cloned()
 880                    {
 881                        if !seen_session_ids.insert(row.session_id.clone()) {
 882                            continue;
 883                        }
 884                        let (icon, icon_from_external_svg) = resolve_agent_icon(&row.agent_id);
 885                        let worktrees =
 886                            worktree_info_from_thread_paths(&row.folder_paths, &project_groups);
 887                        threads.push(ThreadEntry {
 888                            metadata: row,
 889                            icon,
 890                            icon_from_external_svg,
 891                            status: AgentThreadStatus::default(),
 892                            workspace: ThreadEntryWorkspace::Closed(worktree_path_list.clone()),
 893                            is_live: false,
 894                            is_background: false,
 895                            is_title_generating: false,
 896                            highlight_positions: Vec::new(),
 897                            worktrees,
 898                            diff_stats: DiffStats::default(),
 899                        });
 900                    }
 901                }
 902
 903                // Build a lookup from live_infos and compute running/waiting
 904                // counts in a single pass.
 905                let mut live_info_by_session: HashMap<&acp::SessionId, &ActiveThreadInfo> =
 906                    HashMap::new();
 907                for info in &live_infos {
 908                    live_info_by_session.insert(&info.session_id, info);
 909                    if info.status == AgentThreadStatus::Running {
 910                        has_running_threads = true;
 911                    }
 912                    if info.status == AgentThreadStatus::WaitingForConfirmation {
 913                        waiting_thread_count += 1;
 914                    }
 915                }
 916
 917                // Merge live info into threads and update notification state
 918                // in a single pass.
 919                for thread in &mut threads {
 920                    if let Some(info) = live_info_by_session.get(&thread.metadata.session_id) {
 921                        thread.apply_active_info(info);
 922                    }
 923
 924                    let session_id = &thread.metadata.session_id;
 925
 926                    let is_thread_workspace_active = match &thread.workspace {
 927                        ThreadEntryWorkspace::Open(thread_workspace) => active_workspace
 928                            .as_ref()
 929                            .is_some_and(|active| active == thread_workspace),
 930                        ThreadEntryWorkspace::Closed(_) => false,
 931                    };
 932
 933                    if thread.status == AgentThreadStatus::Completed
 934                        && !is_thread_workspace_active
 935                        && old_statuses.get(session_id) == Some(&AgentThreadStatus::Running)
 936                    {
 937                        notified_threads.insert(session_id.clone());
 938                    }
 939
 940                    if is_thread_workspace_active && !thread.is_background {
 941                        notified_threads.remove(session_id);
 942                    }
 943                }
 944
 945                threads.sort_by(|a, b| {
 946                    let a_time = self
 947                        .thread_last_message_sent_or_queued
 948                        .get(&a.metadata.session_id)
 949                        .copied()
 950                        .or(a.metadata.created_at)
 951                        .or(Some(a.metadata.updated_at));
 952                    let b_time = self
 953                        .thread_last_message_sent_or_queued
 954                        .get(&b.metadata.session_id)
 955                        .copied()
 956                        .or(b.metadata.created_at)
 957                        .or(Some(b.metadata.updated_at));
 958                    b_time.cmp(&a_time)
 959                });
 960            } else {
 961                for info in live_infos {
 962                    if info.status == AgentThreadStatus::Running {
 963                        has_running_threads = true;
 964                    }
 965                    if info.status == AgentThreadStatus::WaitingForConfirmation {
 966                        waiting_thread_count += 1;
 967                    }
 968                }
 969            }
 970
 971            if !query.is_empty() {
 972                let workspace_highlight_positions =
 973                    fuzzy_match_positions(&query, &label).unwrap_or_default();
 974                let workspace_matched = !workspace_highlight_positions.is_empty();
 975
 976                let mut matched_threads: Vec<ThreadEntry> = Vec::new();
 977                for mut thread in threads {
 978                    let title: &str = &thread.metadata.title;
 979                    if let Some(positions) = fuzzy_match_positions(&query, title) {
 980                        thread.highlight_positions = positions;
 981                    }
 982                    let mut worktree_matched = false;
 983                    for worktree in &mut thread.worktrees {
 984                        if let Some(positions) = fuzzy_match_positions(&query, &worktree.name) {
 985                            worktree.highlight_positions = positions;
 986                            worktree_matched = true;
 987                        }
 988                    }
 989                    if workspace_matched
 990                        || !thread.highlight_positions.is_empty()
 991                        || worktree_matched
 992                    {
 993                        matched_threads.push(thread);
 994                    }
 995                }
 996
 997                if matched_threads.is_empty() && !workspace_matched {
 998                    continue;
 999                }
1000
1001                project_header_indices.push(entries.len());
1002                entries.push(ListEntry::ProjectHeader {
1003                    path_list: path_list.clone(),
1004                    label,
1005                    workspace: representative_workspace.clone(),
1006                    highlight_positions: workspace_highlight_positions,
1007                    has_running_threads,
1008                    waiting_thread_count,
1009                    is_active,
1010                });
1011
1012                for thread in matched_threads {
1013                    current_session_ids.insert(thread.metadata.session_id.clone());
1014                    entries.push(thread.into());
1015                }
1016            } else {
1017                let is_draft_for_workspace = is_active
1018                    && matches!(&self.active_entry, Some(ActiveEntry::Draft(_)))
1019                    && self.active_entry_workspace() == Some(representative_workspace);
1020
1021                project_header_indices.push(entries.len());
1022                entries.push(ListEntry::ProjectHeader {
1023                    path_list: path_list.clone(),
1024                    label,
1025                    workspace: representative_workspace.clone(),
1026                    highlight_positions: Vec::new(),
1027                    has_running_threads,
1028                    waiting_thread_count,
1029                    is_active,
1030                });
1031
1032                if is_collapsed {
1033                    continue;
1034                }
1035
1036                // Emit "New Thread" entries for threadless workspaces
1037                // and active drafts, right after the header.
1038                for (workspace, worktrees) in &threadless_workspaces {
1039                    entries.push(ListEntry::NewThread {
1040                        path_list: path_list.clone(),
1041                        workspace: workspace.clone(),
1042                        worktrees: worktrees.clone(),
1043                    });
1044                }
1045                if is_draft_for_workspace
1046                    && !threadless_workspaces
1047                        .iter()
1048                        .any(|(ws, _)| ws == representative_workspace)
1049                {
1050                    let ws_path_list = workspace_path_list(representative_workspace, cx);
1051                    let worktrees = worktree_info_from_thread_paths(&ws_path_list, &project_groups);
1052                    entries.push(ListEntry::NewThread {
1053                        path_list: path_list.clone(),
1054                        workspace: representative_workspace.clone(),
1055                        worktrees,
1056                    });
1057                }
1058
1059                let total = threads.len();
1060
1061                let extra_batches = self.expanded_groups.get(&path_list).copied().unwrap_or(0);
1062                let threads_to_show =
1063                    DEFAULT_THREADS_SHOWN + (extra_batches * DEFAULT_THREADS_SHOWN);
1064                let count = threads_to_show.min(total);
1065
1066                let mut promoted_threads: HashSet<acp::SessionId> = HashSet::new();
1067
1068                // Build visible entries in a single pass. Threads within
1069                // the cutoff are always shown. Threads beyond it are shown
1070                // only if they should be promoted (running, waiting, or
1071                // focused)
1072                for (index, thread) in threads.into_iter().enumerate() {
1073                    let is_hidden = index >= count;
1074
1075                    let session_id = &thread.metadata.session_id;
1076                    if is_hidden {
1077                        let is_promoted = thread.status == AgentThreadStatus::Running
1078                            || thread.status == AgentThreadStatus::WaitingForConfirmation
1079                            || notified_threads.contains(session_id)
1080                            || self.active_entry.as_ref().is_some_and(|active| {
1081                                active.matches_entry(&ListEntry::Thread(thread.clone()))
1082                            });
1083                        if is_promoted {
1084                            promoted_threads.insert(session_id.clone());
1085                        }
1086                        if !promoted_threads.contains(session_id) {
1087                            continue;
1088                        }
1089                    }
1090
1091                    current_session_ids.insert(session_id.clone());
1092                    entries.push(thread.into());
1093                }
1094
1095                let visible = count + promoted_threads.len();
1096                let is_fully_expanded = visible >= total;
1097
1098                if total > DEFAULT_THREADS_SHOWN {
1099                    entries.push(ListEntry::ViewMore {
1100                        path_list: path_list.clone(),
1101                        is_fully_expanded,
1102                    });
1103                }
1104            }
1105        }
1106
1107        // Prune stale notifications using the session IDs we collected during
1108        // the build pass (no extra scan needed).
1109        notified_threads.retain(|id| current_session_ids.contains(id));
1110
1111        self.thread_last_accessed
1112            .retain(|id, _| current_session_ids.contains(id));
1113        self.thread_last_message_sent_or_queued
1114            .retain(|id, _| current_session_ids.contains(id));
1115
1116        self.contents = SidebarContents {
1117            entries,
1118            notified_threads,
1119            project_header_indices,
1120            has_open_projects,
1121        };
1122    }
1123
1124    /// Rebuilds the sidebar's visible entries from already-cached state.
1125    fn update_entries(&mut self, cx: &mut Context<Self>) {
1126        let Some(multi_workspace) = self.multi_workspace.upgrade() else {
1127            return;
1128        };
1129        if !multi_workspace.read(cx).multi_workspace_enabled(cx) {
1130            return;
1131        }
1132
1133        let had_notifications = self.has_notifications(cx);
1134        let scroll_position = self.list_state.logical_scroll_top();
1135
1136        self.rebuild_contents(cx);
1137
1138        self.list_state.reset(self.contents.entries.len());
1139        self.list_state.scroll_to(scroll_position);
1140
1141        if had_notifications != self.has_notifications(cx) {
1142            multi_workspace.update(cx, |_, cx| {
1143                cx.notify();
1144            });
1145        }
1146
1147        cx.notify();
1148    }
1149
1150    fn select_first_entry(&mut self) {
1151        self.selection = self
1152            .contents
1153            .entries
1154            .iter()
1155            .position(|entry| matches!(entry, ListEntry::Thread(_)))
1156            .or_else(|| {
1157                if self.contents.entries.is_empty() {
1158                    None
1159                } else {
1160                    Some(0)
1161                }
1162            });
1163    }
1164
1165    fn render_list_entry(
1166        &mut self,
1167        ix: usize,
1168        window: &mut Window,
1169        cx: &mut Context<Self>,
1170    ) -> AnyElement {
1171        let Some(entry) = self.contents.entries.get(ix) else {
1172            return div().into_any_element();
1173        };
1174        let is_focused = self.focus_handle.is_focused(window);
1175        // is_selected means the keyboard selector is here.
1176        let is_selected = is_focused && self.selection == Some(ix);
1177
1178        let is_group_header_after_first =
1179            ix > 0 && matches!(entry, ListEntry::ProjectHeader { .. });
1180
1181        let is_active = self
1182            .active_entry
1183            .as_ref()
1184            .is_some_and(|active| active.matches_entry(entry));
1185
1186        let rendered = match entry {
1187            ListEntry::ProjectHeader {
1188                path_list,
1189                label,
1190                workspace,
1191                highlight_positions,
1192                has_running_threads,
1193                waiting_thread_count,
1194                is_active: is_active_group,
1195            } => self.render_project_header(
1196                ix,
1197                false,
1198                path_list,
1199                label,
1200                workspace,
1201                highlight_positions,
1202                *has_running_threads,
1203                *waiting_thread_count,
1204                *is_active_group,
1205                is_selected,
1206                cx,
1207            ),
1208            ListEntry::Thread(thread) => self.render_thread(ix, thread, is_active, is_selected, cx),
1209            ListEntry::ViewMore {
1210                path_list,
1211                is_fully_expanded,
1212            } => self.render_view_more(ix, path_list, *is_fully_expanded, is_selected, cx),
1213            ListEntry::NewThread {
1214                path_list,
1215                workspace,
1216                worktrees,
1217            } => self.render_new_thread(
1218                ix,
1219                path_list,
1220                workspace,
1221                is_active,
1222                worktrees,
1223                is_selected,
1224                cx,
1225            ),
1226        };
1227
1228        if is_group_header_after_first {
1229            v_flex()
1230                .w_full()
1231                .border_t_1()
1232                .border_color(cx.theme().colors().border.opacity(0.5))
1233                .child(rendered)
1234                .into_any_element()
1235        } else {
1236            rendered
1237        }
1238    }
1239
1240    fn render_remote_project_icon(
1241        &self,
1242        ix: usize,
1243        workspace: &Entity<Workspace>,
1244        cx: &mut Context<Self>,
1245    ) -> Option<AnyElement> {
1246        let project = workspace.read(cx).project().read(cx);
1247        let remote_connection_options = project.remote_connection_options(cx)?;
1248
1249        let remote_icon_per_type = match remote_connection_options {
1250            RemoteConnectionOptions::Wsl(_) => IconName::Linux,
1251            RemoteConnectionOptions::Docker(_) => IconName::Box,
1252            _ => IconName::Server,
1253        };
1254
1255        Some(
1256            div()
1257                .id(format!("remote-project-icon-{}", ix))
1258                .child(
1259                    Icon::new(remote_icon_per_type)
1260                        .size(IconSize::XSmall)
1261                        .color(Color::Muted),
1262                )
1263                .tooltip(Tooltip::text("Remote Project"))
1264                .into_any_element(),
1265        )
1266    }
1267
1268    fn render_project_header(
1269        &self,
1270        ix: usize,
1271        is_sticky: bool,
1272        path_list: &PathList,
1273        label: &SharedString,
1274        workspace: &Entity<Workspace>,
1275        highlight_positions: &[usize],
1276        has_running_threads: bool,
1277        waiting_thread_count: usize,
1278        is_active: bool,
1279        is_selected: bool,
1280        cx: &mut Context<Self>,
1281    ) -> AnyElement {
1282        let id_prefix = if is_sticky { "sticky-" } else { "" };
1283        let id = SharedString::from(format!("{id_prefix}project-header-{ix}"));
1284        let disclosure_id = SharedString::from(format!("disclosure-{ix}"));
1285        let group_name = SharedString::from(format!("{id_prefix}header-group-{ix}"));
1286
1287        let is_collapsed = self.collapsed_groups.contains(path_list);
1288        let (disclosure_icon, disclosure_tooltip) = if is_collapsed {
1289            (IconName::ChevronRight, "Expand Project")
1290        } else {
1291            (IconName::ChevronDown, "Collapse Project")
1292        };
1293
1294        let has_new_thread_entry = self
1295            .contents
1296            .entries
1297            .get(ix + 1)
1298            .is_some_and(|entry| matches!(entry, ListEntry::NewThread { .. }));
1299        let show_new_thread_button = !has_new_thread_entry && !self.has_filter_query(cx);
1300
1301        let workspace_for_remove = workspace.clone();
1302        let workspace_for_menu = workspace.clone();
1303        let workspace_for_open = workspace.clone();
1304
1305        let path_list_for_toggle = path_list.clone();
1306        let path_list_for_collapse = path_list.clone();
1307        let view_more_expanded = self.expanded_groups.contains_key(path_list);
1308
1309        let label = if highlight_positions.is_empty() {
1310            Label::new(label.clone())
1311                .color(Color::Muted)
1312                .into_any_element()
1313        } else {
1314            HighlightedLabel::new(label.clone(), highlight_positions.to_vec())
1315                .color(Color::Muted)
1316                .into_any_element()
1317        };
1318
1319        let color = cx.theme().colors();
1320        let hover_color = color
1321            .element_active
1322            .blend(color.element_background.opacity(0.2));
1323
1324        h_flex()
1325            .id(id)
1326            .group(&group_name)
1327            .h(Tab::content_height(cx))
1328            .w_full()
1329            .pl(px(5.))
1330            .pr_1p5()
1331            .border_1()
1332            .map(|this| {
1333                if is_selected {
1334                    this.border_color(color.border_focused)
1335                } else {
1336                    this.border_color(gpui::transparent_black())
1337                }
1338            })
1339            .justify_between()
1340            .hover(|s| s.bg(hover_color))
1341            .child(
1342                h_flex()
1343                    .when(!is_active, |this| this.cursor_pointer())
1344                    .relative()
1345                    .min_w_0()
1346                    .w_full()
1347                    .gap(px(5.))
1348                    .child(
1349                        IconButton::new(disclosure_id, disclosure_icon)
1350                            .shape(ui::IconButtonShape::Square)
1351                            .icon_size(IconSize::Small)
1352                            .icon_color(Color::Custom(cx.theme().colors().icon_muted.opacity(0.5)))
1353                            .tooltip(Tooltip::text(disclosure_tooltip))
1354                            .on_click(cx.listener(move |this, _, window, cx| {
1355                                this.selection = None;
1356                                this.toggle_collapse(&path_list_for_toggle, window, cx);
1357                            })),
1358                    )
1359                    .child(label)
1360                    .when_some(
1361                        self.render_remote_project_icon(ix, workspace, cx),
1362                        |this, icon| this.child(icon),
1363                    )
1364                    .when(is_collapsed, |this| {
1365                        this.when(has_running_threads, |this| {
1366                            this.child(
1367                                Icon::new(IconName::LoadCircle)
1368                                    .size(IconSize::XSmall)
1369                                    .color(Color::Muted)
1370                                    .with_rotate_animation(2),
1371                            )
1372                        })
1373                        .when(waiting_thread_count > 0, |this| {
1374                            let tooltip_text = if waiting_thread_count == 1 {
1375                                "1 thread is waiting for confirmation".to_string()
1376                            } else {
1377                                format!(
1378                                    "{waiting_thread_count} threads are waiting for confirmation",
1379                                )
1380                            };
1381                            this.child(
1382                                div()
1383                                    .id(format!("{id_prefix}waiting-indicator-{ix}"))
1384                                    .child(
1385                                        Icon::new(IconName::Warning)
1386                                            .size(IconSize::XSmall)
1387                                            .color(Color::Warning),
1388                                    )
1389                                    .tooltip(Tooltip::text(tooltip_text)),
1390                            )
1391                        })
1392                    }),
1393            )
1394            .child({
1395                let workspace_for_new_thread = workspace.clone();
1396                let path_list_for_new_thread = path_list.clone();
1397
1398                h_flex()
1399                    .when(self.project_header_menu_ix != Some(ix), |this| {
1400                        this.visible_on_hover(group_name)
1401                    })
1402                    .on_mouse_down(gpui::MouseButton::Left, |_, _, cx| {
1403                        cx.stop_propagation();
1404                    })
1405                    .child(self.render_project_header_menu(
1406                        ix,
1407                        id_prefix,
1408                        &workspace_for_menu,
1409                        &workspace_for_remove,
1410                        cx,
1411                    ))
1412                    .when(view_more_expanded && !is_collapsed, |this| {
1413                        this.child(
1414                            IconButton::new(
1415                                SharedString::from(format!(
1416                                    "{id_prefix}project-header-collapse-{ix}",
1417                                )),
1418                                IconName::ListCollapse,
1419                            )
1420                            .icon_size(IconSize::Small)
1421                            .icon_color(Color::Muted)
1422                            .tooltip(Tooltip::text("Collapse Displayed Threads"))
1423                            .on_click(cx.listener({
1424                                let path_list_for_collapse = path_list_for_collapse.clone();
1425                                move |this, _, _window, cx| {
1426                                    this.selection = None;
1427                                    this.expanded_groups.remove(&path_list_for_collapse);
1428                                    this.serialize(cx);
1429                                    this.update_entries(cx);
1430                                }
1431                            })),
1432                        )
1433                    })
1434                    .when(show_new_thread_button, |this| {
1435                        this.child(
1436                            IconButton::new(
1437                                SharedString::from(format!(
1438                                    "{id_prefix}project-header-new-thread-{ix}",
1439                                )),
1440                                IconName::Plus,
1441                            )
1442                            .icon_size(IconSize::Small)
1443                            .icon_color(Color::Muted)
1444                            .tooltip(Tooltip::text("New Thread"))
1445                            .on_click(cx.listener({
1446                                let workspace_for_new_thread = workspace_for_new_thread.clone();
1447                                let path_list_for_new_thread = path_list_for_new_thread.clone();
1448                                move |this, _, window, cx| {
1449                                    // Uncollapse the group if collapsed so
1450                                    // the new-thread entry becomes visible.
1451                                    this.collapsed_groups.remove(&path_list_for_new_thread);
1452                                    this.selection = None;
1453                                    this.create_new_thread(&workspace_for_new_thread, window, cx);
1454                                }
1455                            })),
1456                        )
1457                    })
1458            })
1459            .when(!is_active, |this| {
1460                this.tooltip(Tooltip::text("Activate Workspace"))
1461                    .on_click(cx.listener({
1462                        move |this, _, window, cx| {
1463                            this.active_entry =
1464                                Some(ActiveEntry::Draft(workspace_for_open.clone()));
1465                            if let Some(multi_workspace) = this.multi_workspace.upgrade() {
1466                                multi_workspace.update(cx, |multi_workspace, cx| {
1467                                    multi_workspace.activate(
1468                                        workspace_for_open.clone(),
1469                                        window,
1470                                        cx,
1471                                    );
1472                                });
1473                            }
1474                            if AgentPanel::is_visible(&workspace_for_open, cx) {
1475                                workspace_for_open.update(cx, |workspace, cx| {
1476                                    workspace.focus_panel::<AgentPanel>(window, cx);
1477                                });
1478                            }
1479                        }
1480                    }))
1481            })
1482            .into_any_element()
1483    }
1484
1485    fn render_project_header_menu(
1486        &self,
1487        ix: usize,
1488        id_prefix: &str,
1489        workspace: &Entity<Workspace>,
1490        workspace_for_remove: &Entity<Workspace>,
1491        cx: &mut Context<Self>,
1492    ) -> impl IntoElement {
1493        let workspace_for_menu = workspace.clone();
1494        let workspace_for_remove = workspace_for_remove.clone();
1495        let multi_workspace = self.multi_workspace.clone();
1496        let this = cx.weak_entity();
1497
1498        PopoverMenu::new(format!("{id_prefix}project-header-menu-{ix}"))
1499            .on_open(Rc::new({
1500                let this = this.clone();
1501                move |_window, cx| {
1502                    this.update(cx, |sidebar, cx| {
1503                        sidebar.project_header_menu_ix = Some(ix);
1504                        cx.notify();
1505                    })
1506                    .ok();
1507                }
1508            }))
1509            .menu(move |window, cx| {
1510                let workspace = workspace_for_menu.clone();
1511                let workspace_for_remove = workspace_for_remove.clone();
1512                let multi_workspace = multi_workspace.clone();
1513
1514                let menu = ContextMenu::build_persistent(window, cx, move |menu, _window, cx| {
1515                    let worktrees: Vec<_> = workspace
1516                        .read(cx)
1517                        .visible_worktrees(cx)
1518                        .map(|worktree| {
1519                            let worktree_read = worktree.read(cx);
1520                            let id = worktree_read.id();
1521                            let name: SharedString =
1522                                worktree_read.root_name().as_unix_str().to_string().into();
1523                            (id, name)
1524                        })
1525                        .collect();
1526
1527                    let worktree_count = worktrees.len();
1528
1529                    let mut menu = menu
1530                        .header("Project Folders")
1531                        .end_slot_action(Box::new(menu::EndSlot));
1532
1533                    for (worktree_id, name) in &worktrees {
1534                        let worktree_id = *worktree_id;
1535                        let workspace_for_worktree = workspace.clone();
1536                        let workspace_for_remove_worktree = workspace_for_remove.clone();
1537                        let multi_workspace_for_worktree = multi_workspace.clone();
1538
1539                        let remove_handler = move |window: &mut Window, cx: &mut App| {
1540                            if worktree_count <= 1 {
1541                                if let Some(mw) = multi_workspace_for_worktree.upgrade() {
1542                                    let ws = workspace_for_remove_worktree.clone();
1543                                    mw.update(cx, |multi_workspace, cx| {
1544                                        multi_workspace.remove_group(&ws, window, cx);
1545                                    });
1546                                }
1547                            } else {
1548                                workspace_for_worktree.update(cx, |workspace, cx| {
1549                                    workspace.project().update(cx, |project, cx| {
1550                                        project.remove_worktree(worktree_id, cx);
1551                                    });
1552                                });
1553                            }
1554                        };
1555
1556                        menu = menu.entry_with_end_slot_on_hover(
1557                            name.clone(),
1558                            None,
1559                            |_, _| {},
1560                            IconName::Close,
1561                            "Remove Folder".into(),
1562                            remove_handler,
1563                        );
1564                    }
1565
1566                    let workspace_for_add = workspace.clone();
1567                    let multi_workspace_for_add = multi_workspace.clone();
1568                    let menu = menu.separator().entry(
1569                        "Add Folder to Project",
1570                        Some(Box::new(AddFolderToProject)),
1571                        move |window, cx| {
1572                            if let Some(mw) = multi_workspace_for_add.upgrade() {
1573                                mw.update(cx, |mw, cx| {
1574                                    mw.activate(workspace_for_add.clone(), window, cx);
1575                                });
1576                            }
1577                            workspace_for_add.update(cx, |workspace, cx| {
1578                                workspace.add_folder_to_project(&AddFolderToProject, window, cx);
1579                            });
1580                        },
1581                    );
1582
1583                    let workspace_count = multi_workspace
1584                        .upgrade()
1585                        .map_or(0, |mw| mw.read(cx).workspaces().count());
1586                    let menu = if workspace_count > 1 {
1587                        let workspace_for_move = workspace.clone();
1588                        let multi_workspace_for_move = multi_workspace.clone();
1589                        menu.entry(
1590                            "Move to New Window",
1591                            Some(Box::new(
1592                                zed_actions::agents_sidebar::MoveWorkspaceToNewWindow,
1593                            )),
1594                            move |window, cx| {
1595                                if let Some(mw) = multi_workspace_for_move.upgrade() {
1596                                    mw.update(cx, |multi_workspace, cx| {
1597                                        multi_workspace.move_workspace_to_new_window(
1598                                            &workspace_for_move,
1599                                            window,
1600                                            cx,
1601                                        );
1602                                    });
1603                                }
1604                            },
1605                        )
1606                    } else {
1607                        menu
1608                    };
1609
1610                    let workspace_for_remove = workspace_for_remove.clone();
1611                    let multi_workspace_for_remove = multi_workspace.clone();
1612                    menu.separator()
1613                        .entry("Remove Project", None, move |window, cx| {
1614                            if let Some(mw) = multi_workspace_for_remove.upgrade() {
1615                                let ws = workspace_for_remove.clone();
1616                                mw.update(cx, |multi_workspace, cx| {
1617                                    multi_workspace.remove_group(&ws, window, cx);
1618                                });
1619                            }
1620                        })
1621                });
1622
1623                let this = this.clone();
1624                window
1625                    .subscribe(&menu, cx, move |_, _: &gpui::DismissEvent, _window, cx| {
1626                        this.update(cx, |sidebar, cx| {
1627                            sidebar.project_header_menu_ix = None;
1628                            cx.notify();
1629                        })
1630                        .ok();
1631                    })
1632                    .detach();
1633
1634                Some(menu)
1635            })
1636            .trigger(
1637                IconButton::new(
1638                    SharedString::from(format!("{id_prefix}-ellipsis-menu-{ix}")),
1639                    IconName::Ellipsis,
1640                )
1641                .selected_style(ButtonStyle::Tinted(TintColor::Accent))
1642                .icon_size(IconSize::Small)
1643                .icon_color(Color::Muted),
1644            )
1645            .anchor(gpui::Corner::TopRight)
1646            .offset(gpui::Point {
1647                x: px(0.),
1648                y: px(1.),
1649            })
1650    }
1651
1652    fn render_sticky_header(
1653        &self,
1654        window: &mut Window,
1655        cx: &mut Context<Self>,
1656    ) -> Option<AnyElement> {
1657        let scroll_top = self.list_state.logical_scroll_top();
1658
1659        let &header_idx = self
1660            .contents
1661            .project_header_indices
1662            .iter()
1663            .rev()
1664            .find(|&&idx| idx <= scroll_top.item_ix)?;
1665
1666        let needs_sticky = header_idx < scroll_top.item_ix
1667            || (header_idx == scroll_top.item_ix && scroll_top.offset_in_item > px(0.));
1668
1669        if !needs_sticky {
1670            return None;
1671        }
1672
1673        let ListEntry::ProjectHeader {
1674            path_list,
1675            label,
1676            workspace,
1677            highlight_positions,
1678            has_running_threads,
1679            waiting_thread_count,
1680            is_active,
1681        } = self.contents.entries.get(header_idx)?
1682        else {
1683            return None;
1684        };
1685
1686        let is_focused = self.focus_handle.is_focused(window);
1687        let is_selected = is_focused && self.selection == Some(header_idx);
1688
1689        let header_element = self.render_project_header(
1690            header_idx,
1691            true,
1692            &path_list,
1693            &label,
1694            workspace,
1695            &highlight_positions,
1696            *has_running_threads,
1697            *waiting_thread_count,
1698            *is_active,
1699            is_selected,
1700            cx,
1701        );
1702
1703        let top_offset = self
1704            .contents
1705            .project_header_indices
1706            .iter()
1707            .find(|&&idx| idx > header_idx)
1708            .and_then(|&next_idx| {
1709                let bounds = self.list_state.bounds_for_item(next_idx)?;
1710                let viewport = self.list_state.viewport_bounds();
1711                let y_in_viewport = bounds.origin.y - viewport.origin.y;
1712                let header_height = bounds.size.height;
1713                (y_in_viewport < header_height).then_some(y_in_viewport - header_height)
1714            })
1715            .unwrap_or(px(0.));
1716
1717        let color = cx.theme().colors();
1718        let background = color
1719            .title_bar_background
1720            .blend(color.panel_background.opacity(0.2));
1721
1722        let element = v_flex()
1723            .absolute()
1724            .top(top_offset)
1725            .left_0()
1726            .w_full()
1727            .bg(background)
1728            .border_b_1()
1729            .border_color(color.border.opacity(0.5))
1730            .child(header_element)
1731            .shadow_xs()
1732            .into_any_element();
1733
1734        Some(element)
1735    }
1736
1737    fn toggle_collapse(
1738        &mut self,
1739        path_list: &PathList,
1740        _window: &mut Window,
1741        cx: &mut Context<Self>,
1742    ) {
1743        if self.collapsed_groups.contains(path_list) {
1744            self.collapsed_groups.remove(path_list);
1745        } else {
1746            self.collapsed_groups.insert(path_list.clone());
1747        }
1748        self.serialize(cx);
1749        self.update_entries(cx);
1750    }
1751
1752    fn dispatch_context(&self, window: &Window, cx: &Context<Self>) -> KeyContext {
1753        let mut dispatch_context = KeyContext::new_with_defaults();
1754        dispatch_context.add("ThreadsSidebar");
1755        dispatch_context.add("menu");
1756
1757        let identifier = if self.filter_editor.focus_handle(cx).is_focused(window) {
1758            "searching"
1759        } else {
1760            "not_searching"
1761        };
1762
1763        dispatch_context.add(identifier);
1764        dispatch_context
1765    }
1766
1767    fn focus_in(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1768        if !self.focus_handle.is_focused(window) {
1769            return;
1770        }
1771
1772        if let SidebarView::Archive(archive) = &self.view {
1773            let has_selection = archive.read(cx).has_selection();
1774            if !has_selection {
1775                archive.update(cx, |view, cx| view.focus_filter_editor(window, cx));
1776            }
1777        } else if self.selection.is_none() {
1778            self.filter_editor.focus_handle(cx).focus(window, cx);
1779        }
1780    }
1781
1782    fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
1783        if self.reset_filter_editor_text(window, cx) {
1784            self.update_entries(cx);
1785        } else {
1786            self.selection = None;
1787            self.filter_editor.focus_handle(cx).focus(window, cx);
1788            cx.notify();
1789        }
1790    }
1791
1792    fn focus_sidebar_filter(
1793        &mut self,
1794        _: &FocusSidebarFilter,
1795        window: &mut Window,
1796        cx: &mut Context<Self>,
1797    ) {
1798        self.selection = None;
1799        if let SidebarView::Archive(archive) = &self.view {
1800            archive.update(cx, |view, cx| {
1801                view.clear_selection();
1802                view.focus_filter_editor(window, cx);
1803            });
1804        } else {
1805            self.filter_editor.focus_handle(cx).focus(window, cx);
1806        }
1807
1808        // When vim mode is active, the editor defaults to normal mode which
1809        // blocks text input. Switch to insert mode so the user can type
1810        // immediately.
1811        if vim_mode_setting::VimModeSetting::get_global(cx).0 {
1812            if let Ok(action) = cx.build_action("vim::SwitchToInsertMode", None) {
1813                window.dispatch_action(action, cx);
1814            }
1815        }
1816
1817        cx.notify();
1818    }
1819
1820    fn reset_filter_editor_text(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
1821        self.filter_editor.update(cx, |editor, cx| {
1822            if editor.buffer().read(cx).len(cx).0 > 0 {
1823                editor.set_text("", window, cx);
1824                true
1825            } else {
1826                false
1827            }
1828        })
1829    }
1830
1831    fn has_filter_query(&self, cx: &App) -> bool {
1832        !self.filter_editor.read(cx).text(cx).is_empty()
1833    }
1834
1835    fn editor_move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
1836        self.select_next(&SelectNext, window, cx);
1837        if self.selection.is_some() {
1838            self.focus_handle.focus(window, cx);
1839        }
1840    }
1841
1842    fn editor_move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
1843        self.select_previous(&SelectPrevious, window, cx);
1844        if self.selection.is_some() {
1845            self.focus_handle.focus(window, cx);
1846        }
1847    }
1848
1849    fn editor_confirm(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1850        if self.selection.is_none() {
1851            self.select_next(&SelectNext, window, cx);
1852        }
1853        if self.selection.is_some() {
1854            self.focus_handle.focus(window, cx);
1855        }
1856    }
1857
1858    fn select_next(&mut self, _: &SelectNext, _window: &mut Window, cx: &mut Context<Self>) {
1859        let next = match self.selection {
1860            Some(ix) if ix + 1 < self.contents.entries.len() => ix + 1,
1861            Some(_) if !self.contents.entries.is_empty() => 0,
1862            None if !self.contents.entries.is_empty() => 0,
1863            _ => return,
1864        };
1865        self.selection = Some(next);
1866        self.list_state.scroll_to_reveal_item(next);
1867        cx.notify();
1868    }
1869
1870    fn select_previous(&mut self, _: &SelectPrevious, window: &mut Window, cx: &mut Context<Self>) {
1871        match self.selection {
1872            Some(0) => {
1873                self.selection = None;
1874                self.filter_editor.focus_handle(cx).focus(window, cx);
1875                cx.notify();
1876            }
1877            Some(ix) => {
1878                self.selection = Some(ix - 1);
1879                self.list_state.scroll_to_reveal_item(ix - 1);
1880                cx.notify();
1881            }
1882            None if !self.contents.entries.is_empty() => {
1883                let last = self.contents.entries.len() - 1;
1884                self.selection = Some(last);
1885                self.list_state.scroll_to_reveal_item(last);
1886                cx.notify();
1887            }
1888            None => {}
1889        }
1890    }
1891
1892    fn select_first(&mut self, _: &SelectFirst, _window: &mut Window, cx: &mut Context<Self>) {
1893        if !self.contents.entries.is_empty() {
1894            self.selection = Some(0);
1895            self.list_state.scroll_to_reveal_item(0);
1896            cx.notify();
1897        }
1898    }
1899
1900    fn select_last(&mut self, _: &SelectLast, _window: &mut Window, cx: &mut Context<Self>) {
1901        if let Some(last) = self.contents.entries.len().checked_sub(1) {
1902            self.selection = Some(last);
1903            self.list_state.scroll_to_reveal_item(last);
1904            cx.notify();
1905        }
1906    }
1907
1908    fn confirm(&mut self, _: &Confirm, window: &mut Window, cx: &mut Context<Self>) {
1909        let Some(ix) = self.selection else { return };
1910        let Some(entry) = self.contents.entries.get(ix) else {
1911            return;
1912        };
1913
1914        match entry {
1915            ListEntry::ProjectHeader { path_list, .. } => {
1916                let path_list = path_list.clone();
1917                self.toggle_collapse(&path_list, window, cx);
1918            }
1919            ListEntry::Thread(thread) => {
1920                let metadata = thread.metadata.clone();
1921                match &thread.workspace {
1922                    ThreadEntryWorkspace::Open(workspace) => {
1923                        let workspace = workspace.clone();
1924                        self.activate_thread(metadata, &workspace, window, cx);
1925                    }
1926                    ThreadEntryWorkspace::Closed(path_list) => {
1927                        self.open_workspace_and_activate_thread(
1928                            metadata,
1929                            path_list.clone(),
1930                            window,
1931                            cx,
1932                        );
1933                    }
1934                }
1935            }
1936            ListEntry::ViewMore {
1937                path_list,
1938                is_fully_expanded,
1939                ..
1940            } => {
1941                let path_list = path_list.clone();
1942                if *is_fully_expanded {
1943                    self.expanded_groups.remove(&path_list);
1944                } else {
1945                    let current = self.expanded_groups.get(&path_list).copied().unwrap_or(0);
1946                    self.expanded_groups.insert(path_list, current + 1);
1947                }
1948                self.serialize(cx);
1949                self.update_entries(cx);
1950            }
1951            ListEntry::NewThread { workspace, .. } => {
1952                let workspace = workspace.clone();
1953                self.create_new_thread(&workspace, window, cx);
1954            }
1955        }
1956    }
1957
1958    fn find_workspace_across_windows(
1959        &self,
1960        cx: &App,
1961        predicate: impl Fn(&Entity<Workspace>, &App) -> bool,
1962    ) -> Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)> {
1963        cx.windows()
1964            .into_iter()
1965            .filter_map(|window| window.downcast::<MultiWorkspace>())
1966            .find_map(|window| {
1967                let workspace = window.read(cx).ok().and_then(|multi_workspace| {
1968                    multi_workspace
1969                        .workspaces()
1970                        .find(|workspace| predicate(workspace, cx))
1971                })?;
1972                Some((window, workspace))
1973            })
1974    }
1975
1976    fn find_workspace_in_current_window(
1977        &self,
1978        cx: &App,
1979        predicate: impl Fn(&Entity<Workspace>, &App) -> bool,
1980    ) -> Option<Entity<Workspace>> {
1981        self.multi_workspace.upgrade().and_then(|multi_workspace| {
1982            multi_workspace
1983                .read(cx)
1984                .workspaces()
1985                .find(|workspace| predicate(workspace, cx))
1986        })
1987    }
1988
1989    fn load_agent_thread_in_workspace(
1990        workspace: &Entity<Workspace>,
1991        metadata: &ThreadMetadata,
1992        focus: bool,
1993        window: &mut Window,
1994        cx: &mut App,
1995    ) {
1996        workspace.update(cx, |workspace, cx| {
1997            workspace.reveal_panel::<AgentPanel>(window, cx);
1998        });
1999
2000        if let Some(agent_panel) = workspace.read(cx).panel::<AgentPanel>(cx) {
2001            agent_panel.update(cx, |panel, cx| {
2002                panel.load_agent_thread(
2003                    Agent::from(metadata.agent_id.clone()),
2004                    metadata.session_id.clone(),
2005                    Some(metadata.folder_paths.clone()),
2006                    Some(metadata.title.clone()),
2007                    focus,
2008                    window,
2009                    cx,
2010                );
2011            });
2012        }
2013    }
2014
2015    fn activate_thread_locally(
2016        &mut self,
2017        metadata: &ThreadMetadata,
2018        workspace: &Entity<Workspace>,
2019        window: &mut Window,
2020        cx: &mut Context<Self>,
2021    ) {
2022        let Some(multi_workspace) = self.multi_workspace.upgrade() else {
2023            return;
2024        };
2025
2026        // Set active_entry eagerly so the sidebar highlight updates
2027        // immediately, rather than waiting for a deferred AgentPanel
2028        // event which can race with ActiveWorkspaceChanged clearing it.
2029        self.active_entry = Some(ActiveEntry::Thread {
2030            session_id: metadata.session_id.clone(),
2031            workspace: workspace.clone(),
2032        });
2033        self.record_thread_access(&metadata.session_id);
2034
2035        multi_workspace.update(cx, |multi_workspace, cx| {
2036            multi_workspace.activate(workspace.clone(), window, cx);
2037        });
2038
2039        Self::load_agent_thread_in_workspace(workspace, metadata, true, window, cx);
2040
2041        self.update_entries(cx);
2042    }
2043
2044    fn activate_thread_in_other_window(
2045        &self,
2046        metadata: ThreadMetadata,
2047        workspace: Entity<Workspace>,
2048        target_window: WindowHandle<MultiWorkspace>,
2049        cx: &mut Context<Self>,
2050    ) {
2051        let target_session_id = metadata.session_id.clone();
2052        let workspace_for_entry = workspace.clone();
2053
2054        let activated = target_window
2055            .update(cx, |multi_workspace, window, cx| {
2056                window.activate_window();
2057                multi_workspace.activate(workspace.clone(), window, cx);
2058                Self::load_agent_thread_in_workspace(&workspace, &metadata, true, window, cx);
2059            })
2060            .log_err()
2061            .is_some();
2062
2063        if activated {
2064            if let Some(target_sidebar) = target_window
2065                .read(cx)
2066                .ok()
2067                .and_then(|multi_workspace| {
2068                    multi_workspace.sidebar().map(|sidebar| sidebar.to_any())
2069                })
2070                .and_then(|sidebar| sidebar.downcast::<Self>().ok())
2071            {
2072                target_sidebar.update(cx, |sidebar, cx| {
2073                    sidebar.active_entry = Some(ActiveEntry::Thread {
2074                        session_id: target_session_id.clone(),
2075                        workspace: workspace_for_entry.clone(),
2076                    });
2077                    sidebar.record_thread_access(&target_session_id);
2078                    sidebar.update_entries(cx);
2079                });
2080            }
2081        }
2082    }
2083
2084    fn activate_thread(
2085        &mut self,
2086        metadata: ThreadMetadata,
2087        workspace: &Entity<Workspace>,
2088        window: &mut Window,
2089        cx: &mut Context<Self>,
2090    ) {
2091        if self
2092            .find_workspace_in_current_window(cx, |candidate, _| candidate == workspace)
2093            .is_some()
2094        {
2095            self.activate_thread_locally(&metadata, &workspace, window, cx);
2096            return;
2097        }
2098
2099        let Some((target_window, workspace)) =
2100            self.find_workspace_across_windows(cx, |candidate, _| candidate == workspace)
2101        else {
2102            return;
2103        };
2104
2105        self.activate_thread_in_other_window(metadata, workspace, target_window, cx);
2106    }
2107
2108    fn open_workspace_and_activate_thread(
2109        &mut self,
2110        metadata: ThreadMetadata,
2111        path_list: PathList,
2112        window: &mut Window,
2113        cx: &mut Context<Self>,
2114    ) {
2115        let Some(multi_workspace) = self.multi_workspace.upgrade() else {
2116            return;
2117        };
2118
2119        let paths: Vec<std::path::PathBuf> =
2120            path_list.paths().iter().map(|p| p.to_path_buf()).collect();
2121
2122        let open_task = multi_workspace.update(cx, |mw, cx| {
2123            mw.open_project(paths, workspace::OpenMode::Activate, window, cx)
2124        });
2125
2126        cx.spawn_in(window, async move |this, cx| {
2127            let workspace = open_task.await?;
2128
2129            this.update_in(cx, |this, window, cx| {
2130                this.activate_thread(metadata, &workspace, window, cx);
2131            })?;
2132            anyhow::Ok(())
2133        })
2134        .detach_and_log_err(cx);
2135    }
2136
2137    fn find_current_workspace_for_path_list(
2138        &self,
2139        path_list: &PathList,
2140        cx: &App,
2141    ) -> Option<Entity<Workspace>> {
2142        self.find_workspace_in_current_window(cx, |workspace, cx| {
2143            workspace_path_list(workspace, cx).paths() == path_list.paths()
2144        })
2145    }
2146
2147    fn find_open_workspace_for_path_list(
2148        &self,
2149        path_list: &PathList,
2150        cx: &App,
2151    ) -> Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)> {
2152        self.find_workspace_across_windows(cx, |workspace, cx| {
2153            workspace_path_list(workspace, cx).paths() == path_list.paths()
2154        })
2155    }
2156
2157    fn activate_archived_thread(
2158        &mut self,
2159        metadata: ThreadMetadata,
2160        window: &mut Window,
2161        cx: &mut Context<Self>,
2162    ) {
2163        ThreadMetadataStore::global(cx)
2164            .update(cx, |store, cx| store.unarchive(&metadata.session_id, cx));
2165
2166        if !metadata.folder_paths.paths().is_empty() {
2167            let path_list = metadata.folder_paths.clone();
2168            if let Some(workspace) = self.find_current_workspace_for_path_list(&path_list, cx) {
2169                self.activate_thread_locally(&metadata, &workspace, window, cx);
2170            } else if let Some((target_window, workspace)) =
2171                self.find_open_workspace_for_path_list(&path_list, cx)
2172            {
2173                self.activate_thread_in_other_window(metadata, workspace, target_window, cx);
2174            } else {
2175                self.open_workspace_and_activate_thread(metadata, path_list, window, cx);
2176            }
2177            return;
2178        }
2179
2180        let active_workspace = self
2181            .multi_workspace
2182            .upgrade()
2183            .map(|w| w.read(cx).active_workspace());
2184
2185        if let Some(workspace) = active_workspace {
2186            self.activate_thread_locally(&metadata, &workspace, window, cx);
2187        }
2188    }
2189
2190    fn expand_selected_entry(
2191        &mut self,
2192        _: &SelectChild,
2193        _window: &mut Window,
2194        cx: &mut Context<Self>,
2195    ) {
2196        let Some(ix) = self.selection else { return };
2197
2198        match self.contents.entries.get(ix) {
2199            Some(ListEntry::ProjectHeader { path_list, .. }) => {
2200                if self.collapsed_groups.contains(path_list) {
2201                    let path_list = path_list.clone();
2202                    self.collapsed_groups.remove(&path_list);
2203                    self.update_entries(cx);
2204                } else if ix + 1 < self.contents.entries.len() {
2205                    self.selection = Some(ix + 1);
2206                    self.list_state.scroll_to_reveal_item(ix + 1);
2207                    cx.notify();
2208                }
2209            }
2210            _ => {}
2211        }
2212    }
2213
2214    fn collapse_selected_entry(
2215        &mut self,
2216        _: &SelectParent,
2217        _window: &mut Window,
2218        cx: &mut Context<Self>,
2219    ) {
2220        let Some(ix) = self.selection else { return };
2221
2222        match self.contents.entries.get(ix) {
2223            Some(ListEntry::ProjectHeader { path_list, .. }) => {
2224                if !self.collapsed_groups.contains(path_list) {
2225                    let path_list = path_list.clone();
2226                    self.collapsed_groups.insert(path_list);
2227                    self.update_entries(cx);
2228                }
2229            }
2230            Some(
2231                ListEntry::Thread(_) | ListEntry::ViewMore { .. } | ListEntry::NewThread { .. },
2232            ) => {
2233                for i in (0..ix).rev() {
2234                    if let Some(ListEntry::ProjectHeader { path_list, .. }) =
2235                        self.contents.entries.get(i)
2236                    {
2237                        let path_list = path_list.clone();
2238                        self.selection = Some(i);
2239                        self.collapsed_groups.insert(path_list);
2240                        self.update_entries(cx);
2241                        break;
2242                    }
2243                }
2244            }
2245            None => {}
2246        }
2247    }
2248
2249    fn toggle_selected_fold(
2250        &mut self,
2251        _: &editor::actions::ToggleFold,
2252        _window: &mut Window,
2253        cx: &mut Context<Self>,
2254    ) {
2255        let Some(ix) = self.selection else { return };
2256
2257        // Find the group header for the current selection.
2258        let header_ix = match self.contents.entries.get(ix) {
2259            Some(ListEntry::ProjectHeader { .. }) => Some(ix),
2260            Some(
2261                ListEntry::Thread(_) | ListEntry::ViewMore { .. } | ListEntry::NewThread { .. },
2262            ) => (0..ix).rev().find(|&i| {
2263                matches!(
2264                    self.contents.entries.get(i),
2265                    Some(ListEntry::ProjectHeader { .. })
2266                )
2267            }),
2268            None => None,
2269        };
2270
2271        if let Some(header_ix) = header_ix {
2272            if let Some(ListEntry::ProjectHeader { path_list, .. }) =
2273                self.contents.entries.get(header_ix)
2274            {
2275                let path_list = path_list.clone();
2276                if self.collapsed_groups.contains(&path_list) {
2277                    self.collapsed_groups.remove(&path_list);
2278                } else {
2279                    self.selection = Some(header_ix);
2280                    self.collapsed_groups.insert(path_list);
2281                }
2282                self.update_entries(cx);
2283            }
2284        }
2285    }
2286
2287    fn fold_all(
2288        &mut self,
2289        _: &editor::actions::FoldAll,
2290        _window: &mut Window,
2291        cx: &mut Context<Self>,
2292    ) {
2293        for entry in &self.contents.entries {
2294            if let ListEntry::ProjectHeader { path_list, .. } = entry {
2295                self.collapsed_groups.insert(path_list.clone());
2296            }
2297        }
2298        self.update_entries(cx);
2299    }
2300
2301    fn unfold_all(
2302        &mut self,
2303        _: &editor::actions::UnfoldAll,
2304        _window: &mut Window,
2305        cx: &mut Context<Self>,
2306    ) {
2307        self.collapsed_groups.clear();
2308        self.update_entries(cx);
2309    }
2310
2311    fn stop_thread(&mut self, session_id: &acp::SessionId, cx: &mut Context<Self>) {
2312        let Some(multi_workspace) = self.multi_workspace.upgrade() else {
2313            return;
2314        };
2315
2316        let workspaces = multi_workspace.read(cx).workspaces().collect::<Vec<_>>();
2317        for workspace in workspaces {
2318            if let Some(agent_panel) = workspace.read(cx).panel::<AgentPanel>(cx) {
2319                let cancelled =
2320                    agent_panel.update(cx, |panel, cx| panel.cancel_thread(session_id, cx));
2321                if cancelled {
2322                    return;
2323                }
2324            }
2325        }
2326    }
2327
2328    fn archive_thread(
2329        &mut self,
2330        session_id: &acp::SessionId,
2331        window: &mut Window,
2332        cx: &mut Context<Self>,
2333    ) {
2334        ThreadMetadataStore::global(cx).update(cx, |store, cx| store.archive(session_id, cx));
2335
2336        // If we're archiving the currently focused thread, move focus to the
2337        // nearest thread within the same project group. We never cross group
2338        // boundaries — if the group has no other threads, clear focus and open
2339        // a blank new thread in the panel instead.
2340        if self
2341            .active_entry
2342            .as_ref()
2343            .is_some_and(|e| e.is_active_thread(session_id))
2344        {
2345            let current_pos = self.contents.entries.iter().position(|entry| {
2346                matches!(entry, ListEntry::Thread(t) if &t.metadata.session_id == session_id)
2347            });
2348
2349            // Find the workspace that owns this thread's project group by
2350            // walking backwards to the nearest ProjectHeader. We must use
2351            // *this* workspace (not the active workspace) because the user
2352            // might be archiving a thread in a non-active group.
2353            let group_workspace = current_pos.and_then(|pos| {
2354                self.contents.entries[..pos]
2355                    .iter()
2356                    .rev()
2357                    .find_map(|e| match e {
2358                        ListEntry::ProjectHeader { workspace, .. } => Some(workspace.clone()),
2359                        _ => None,
2360                    })
2361            });
2362
2363            let next_thread = current_pos.and_then(|pos| {
2364                let group_start = self.contents.entries[..pos]
2365                    .iter()
2366                    .rposition(|e| matches!(e, ListEntry::ProjectHeader { .. }))
2367                    .map_or(0, |i| i + 1);
2368                let group_end = self.contents.entries[pos + 1..]
2369                    .iter()
2370                    .position(|e| matches!(e, ListEntry::ProjectHeader { .. }))
2371                    .map_or(self.contents.entries.len(), |i| pos + 1 + i);
2372
2373                let above = self.contents.entries[group_start..pos]
2374                    .iter()
2375                    .rev()
2376                    .find_map(|entry| {
2377                        if let ListEntry::Thread(t) = entry {
2378                            Some(t)
2379                        } else {
2380                            None
2381                        }
2382                    });
2383
2384                above.or_else(|| {
2385                    self.contents.entries[pos + 1..group_end]
2386                        .iter()
2387                        .find_map(|entry| {
2388                            if let ListEntry::Thread(t) = entry {
2389                                Some(t)
2390                            } else {
2391                                None
2392                            }
2393                        })
2394                })
2395            });
2396
2397            if let Some(next) = next_thread {
2398                let next_metadata = next.metadata.clone();
2399                // Use the thread's own workspace when it has one open (e.g. an absorbed
2400                // linked worktree thread that appears under the main workspace's header
2401                // but belongs to its own workspace). Loading into the wrong panel binds
2402                // the thread to the wrong project, which corrupts its stored folder_paths
2403                // when metadata is saved via ThreadMetadata::from_thread.
2404                let target_workspace = match &next.workspace {
2405                    ThreadEntryWorkspace::Open(ws) => Some(ws.clone()),
2406                    ThreadEntryWorkspace::Closed(_) => group_workspace,
2407                };
2408                if let Some(ref ws) = target_workspace {
2409                    self.active_entry = Some(ActiveEntry::Thread {
2410                        session_id: next_metadata.session_id.clone(),
2411                        workspace: ws.clone(),
2412                    });
2413                }
2414                self.record_thread_access(&next_metadata.session_id);
2415
2416                if let Some(workspace) = target_workspace {
2417                    if let Some(agent_panel) = workspace.read(cx).panel::<AgentPanel>(cx) {
2418                        agent_panel.update(cx, |panel, cx| {
2419                            panel.load_agent_thread(
2420                                Agent::from(next_metadata.agent_id.clone()),
2421                                next_metadata.session_id.clone(),
2422                                Some(next_metadata.folder_paths.clone()),
2423                                Some(next_metadata.title.clone()),
2424                                true,
2425                                window,
2426                                cx,
2427                            );
2428                        });
2429                    }
2430                }
2431            } else {
2432                if let Some(workspace) = &group_workspace {
2433                    self.active_entry = Some(ActiveEntry::Draft(workspace.clone()));
2434                    if let Some(agent_panel) = workspace.read(cx).panel::<AgentPanel>(cx) {
2435                        agent_panel.update(cx, |panel, cx| {
2436                            panel.new_thread(&NewThread, window, cx);
2437                        });
2438                    }
2439                }
2440            }
2441        }
2442    }
2443
2444    fn remove_selected_thread(
2445        &mut self,
2446        _: &RemoveSelectedThread,
2447        window: &mut Window,
2448        cx: &mut Context<Self>,
2449    ) {
2450        let Some(ix) = self.selection else {
2451            return;
2452        };
2453        let Some(ListEntry::Thread(thread)) = self.contents.entries.get(ix) else {
2454            return;
2455        };
2456        match thread.status {
2457            AgentThreadStatus::Running | AgentThreadStatus::WaitingForConfirmation => return,
2458            AgentThreadStatus::Completed | AgentThreadStatus::Error => {}
2459        }
2460
2461        let session_id = thread.metadata.session_id.clone();
2462        self.archive_thread(&session_id, window, cx)
2463    }
2464
2465    fn record_thread_access(&mut self, session_id: &acp::SessionId) {
2466        self.thread_last_accessed
2467            .insert(session_id.clone(), Utc::now());
2468    }
2469
2470    fn record_thread_message_sent(&mut self, session_id: &acp::SessionId) {
2471        self.thread_last_message_sent_or_queued
2472            .insert(session_id.clone(), Utc::now());
2473    }
2474
2475    fn mru_threads_for_switcher(&self, _cx: &App) -> Vec<ThreadSwitcherEntry> {
2476        let mut current_header_label: Option<SharedString> = None;
2477        let mut current_header_workspace: Option<Entity<Workspace>> = None;
2478        let mut entries: Vec<ThreadSwitcherEntry> = self
2479            .contents
2480            .entries
2481            .iter()
2482            .filter_map(|entry| match entry {
2483                ListEntry::ProjectHeader {
2484                    label, workspace, ..
2485                } => {
2486                    current_header_label = Some(label.clone());
2487                    current_header_workspace = Some(workspace.clone());
2488                    None
2489                }
2490                ListEntry::Thread(thread) => {
2491                    let workspace = match &thread.workspace {
2492                        ThreadEntryWorkspace::Open(workspace) => workspace.clone(),
2493                        ThreadEntryWorkspace::Closed(_) => {
2494                            current_header_workspace.as_ref()?.clone()
2495                        }
2496                    };
2497                    let notified = self
2498                        .contents
2499                        .is_thread_notified(&thread.metadata.session_id);
2500                    let timestamp: SharedString = format_history_entry_timestamp(
2501                        self.thread_last_message_sent_or_queued
2502                            .get(&thread.metadata.session_id)
2503                            .copied()
2504                            .or(thread.metadata.created_at)
2505                            .unwrap_or(thread.metadata.updated_at),
2506                    )
2507                    .into();
2508                    Some(ThreadSwitcherEntry {
2509                        session_id: thread.metadata.session_id.clone(),
2510                        title: thread.metadata.title.clone(),
2511                        icon: thread.icon,
2512                        icon_from_external_svg: thread.icon_from_external_svg.clone(),
2513                        status: thread.status,
2514                        metadata: thread.metadata.clone(),
2515                        workspace,
2516                        project_name: current_header_label.clone(),
2517                        worktrees: thread
2518                            .worktrees
2519                            .iter()
2520                            .map(|wt| ThreadItemWorktreeInfo {
2521                                name: wt.name.clone(),
2522                                full_path: wt.full_path.clone(),
2523                                highlight_positions: Vec::new(),
2524                            })
2525                            .collect(),
2526                        diff_stats: thread.diff_stats,
2527                        is_title_generating: thread.is_title_generating,
2528                        notified,
2529                        timestamp,
2530                    })
2531                }
2532                _ => None,
2533            })
2534            .collect();
2535
2536        entries.sort_by(|a, b| {
2537            let a_accessed = self.thread_last_accessed.get(&a.session_id);
2538            let b_accessed = self.thread_last_accessed.get(&b.session_id);
2539
2540            match (a_accessed, b_accessed) {
2541                (Some(a_time), Some(b_time)) => b_time.cmp(a_time),
2542                (Some(_), None) => std::cmp::Ordering::Less,
2543                (None, Some(_)) => std::cmp::Ordering::Greater,
2544                (None, None) => {
2545                    let a_sent = self.thread_last_message_sent_or_queued.get(&a.session_id);
2546                    let b_sent = self.thread_last_message_sent_or_queued.get(&b.session_id);
2547
2548                    match (a_sent, b_sent) {
2549                        (Some(a_time), Some(b_time)) => b_time.cmp(a_time),
2550                        (Some(_), None) => std::cmp::Ordering::Less,
2551                        (None, Some(_)) => std::cmp::Ordering::Greater,
2552                        (None, None) => {
2553                            let a_time = a.metadata.created_at.or(Some(a.metadata.updated_at));
2554                            let b_time = b.metadata.created_at.or(Some(b.metadata.updated_at));
2555                            b_time.cmp(&a_time)
2556                        }
2557                    }
2558                }
2559            }
2560        });
2561
2562        entries
2563    }
2564
2565    fn dismiss_thread_switcher(&mut self, cx: &mut Context<Self>) {
2566        self.thread_switcher = None;
2567        self._thread_switcher_subscriptions.clear();
2568        if let Some(mw) = self.multi_workspace.upgrade() {
2569            mw.update(cx, |mw, cx| {
2570                mw.set_sidebar_overlay(None, cx);
2571            });
2572        }
2573    }
2574
2575    fn on_toggle_thread_switcher(
2576        &mut self,
2577        action: &ToggleThreadSwitcher,
2578        window: &mut Window,
2579        cx: &mut Context<Self>,
2580    ) {
2581        self.toggle_thread_switcher_impl(action.select_last, window, cx);
2582    }
2583
2584    fn toggle_thread_switcher_impl(
2585        &mut self,
2586        select_last: bool,
2587        window: &mut Window,
2588        cx: &mut Context<Self>,
2589    ) {
2590        if let Some(thread_switcher) = &self.thread_switcher {
2591            thread_switcher.update(cx, |switcher, cx| {
2592                if select_last {
2593                    switcher.select_last(cx);
2594                } else {
2595                    switcher.cycle_selection(cx);
2596                }
2597            });
2598            return;
2599        }
2600
2601        let entries = self.mru_threads_for_switcher(cx);
2602        if entries.len() < 2 {
2603            return;
2604        }
2605
2606        let weak_multi_workspace = self.multi_workspace.clone();
2607
2608        let original_metadata = match &self.active_entry {
2609            Some(ActiveEntry::Thread { session_id, .. }) => entries
2610                .iter()
2611                .find(|e| &e.session_id == session_id)
2612                .map(|e| e.metadata.clone()),
2613            _ => None,
2614        };
2615        let original_workspace = self
2616            .multi_workspace
2617            .upgrade()
2618            .map(|mw| mw.read(cx).workspace().clone());
2619
2620        let thread_switcher = cx.new(|cx| ThreadSwitcher::new(entries, select_last, window, cx));
2621
2622        let mut subscriptions = Vec::new();
2623
2624        subscriptions.push(cx.subscribe_in(&thread_switcher, window, {
2625            let thread_switcher = thread_switcher.clone();
2626            move |this, _emitter, event: &ThreadSwitcherEvent, window, cx| match event {
2627                ThreadSwitcherEvent::Preview {
2628                    metadata,
2629                    workspace,
2630                } => {
2631                    if let Some(mw) = weak_multi_workspace.upgrade() {
2632                        mw.update(cx, |mw, cx| {
2633                            mw.activate(workspace.clone(), window, cx);
2634                        });
2635                    }
2636                    this.active_entry = Some(ActiveEntry::Thread {
2637                        session_id: metadata.session_id.clone(),
2638                        workspace: workspace.clone(),
2639                    });
2640                    this.update_entries(cx);
2641                    Self::load_agent_thread_in_workspace(workspace, metadata, false, window, cx);
2642                    let focus = thread_switcher.focus_handle(cx);
2643                    window.focus(&focus, cx);
2644                }
2645                ThreadSwitcherEvent::Confirmed {
2646                    metadata,
2647                    workspace,
2648                } => {
2649                    if let Some(mw) = weak_multi_workspace.upgrade() {
2650                        mw.update(cx, |mw, cx| {
2651                            mw.activate(workspace.clone(), window, cx);
2652                        });
2653                    }
2654                    this.record_thread_access(&metadata.session_id);
2655                    this.active_entry = Some(ActiveEntry::Thread {
2656                        session_id: metadata.session_id.clone(),
2657                        workspace: workspace.clone(),
2658                    });
2659                    this.update_entries(cx);
2660                    Self::load_agent_thread_in_workspace(workspace, metadata, false, window, cx);
2661                    this.dismiss_thread_switcher(cx);
2662                    workspace.update(cx, |workspace, cx| {
2663                        workspace.focus_panel::<AgentPanel>(window, cx);
2664                    });
2665                }
2666                ThreadSwitcherEvent::Dismissed => {
2667                    if let Some(mw) = weak_multi_workspace.upgrade() {
2668                        if let Some(original_ws) = &original_workspace {
2669                            mw.update(cx, |mw, cx| {
2670                                mw.activate(original_ws.clone(), window, cx);
2671                            });
2672                        }
2673                    }
2674                    if let Some(metadata) = &original_metadata {
2675                        if let Some(original_ws) = &original_workspace {
2676                            this.active_entry = Some(ActiveEntry::Thread {
2677                                session_id: metadata.session_id.clone(),
2678                                workspace: original_ws.clone(),
2679                            });
2680                        }
2681                        this.update_entries(cx);
2682                        if let Some(original_ws) = &original_workspace {
2683                            Self::load_agent_thread_in_workspace(
2684                                original_ws,
2685                                metadata,
2686                                false,
2687                                window,
2688                                cx,
2689                            );
2690                        }
2691                    }
2692                    this.dismiss_thread_switcher(cx);
2693                }
2694            }
2695        }));
2696
2697        subscriptions.push(cx.subscribe_in(
2698            &thread_switcher,
2699            window,
2700            |this, _emitter, _event: &gpui::DismissEvent, _window, cx| {
2701                this.dismiss_thread_switcher(cx);
2702            },
2703        ));
2704
2705        let focus = thread_switcher.focus_handle(cx);
2706        let overlay_view = gpui::AnyView::from(thread_switcher.clone());
2707
2708        // Replay the initial preview that was emitted during construction
2709        // before subscriptions were wired up.
2710        let initial_preview = thread_switcher
2711            .read(cx)
2712            .selected_entry()
2713            .map(|entry| (entry.metadata.clone(), entry.workspace.clone()));
2714
2715        self.thread_switcher = Some(thread_switcher);
2716        self._thread_switcher_subscriptions = subscriptions;
2717        if let Some(mw) = self.multi_workspace.upgrade() {
2718            mw.update(cx, |mw, cx| {
2719                mw.set_sidebar_overlay(Some(overlay_view), cx);
2720            });
2721        }
2722
2723        if let Some((metadata, workspace)) = initial_preview {
2724            if let Some(mw) = self.multi_workspace.upgrade() {
2725                mw.update(cx, |mw, cx| {
2726                    mw.activate(workspace.clone(), window, cx);
2727                });
2728            }
2729            self.active_entry = Some(ActiveEntry::Thread {
2730                session_id: metadata.session_id.clone(),
2731                workspace: workspace.clone(),
2732            });
2733            self.update_entries(cx);
2734            Self::load_agent_thread_in_workspace(&workspace, &metadata, false, window, cx);
2735        }
2736
2737        window.focus(&focus, cx);
2738    }
2739
2740    fn render_thread(
2741        &self,
2742        ix: usize,
2743        thread: &ThreadEntry,
2744        is_active: bool,
2745        is_focused: bool,
2746        cx: &mut Context<Self>,
2747    ) -> AnyElement {
2748        let has_notification = self
2749            .contents
2750            .is_thread_notified(&thread.metadata.session_id);
2751
2752        let title: SharedString = thread.metadata.title.clone();
2753        let metadata = thread.metadata.clone();
2754        let thread_workspace = thread.workspace.clone();
2755
2756        let is_hovered = self.hovered_thread_index == Some(ix);
2757        let is_selected = is_active;
2758        let is_running = matches!(
2759            thread.status,
2760            AgentThreadStatus::Running | AgentThreadStatus::WaitingForConfirmation
2761        );
2762
2763        let session_id_for_delete = thread.metadata.session_id.clone();
2764        let focus_handle = self.focus_handle.clone();
2765
2766        let id = SharedString::from(format!("thread-entry-{}", ix));
2767
2768        let color = cx.theme().colors();
2769        let sidebar_bg = color
2770            .title_bar_background
2771            .blend(color.panel_background.opacity(0.32));
2772
2773        let timestamp = format_history_entry_timestamp(
2774            self.thread_last_message_sent_or_queued
2775                .get(&thread.metadata.session_id)
2776                .copied()
2777                .or(thread.metadata.created_at)
2778                .unwrap_or(thread.metadata.updated_at),
2779        );
2780
2781        ThreadItem::new(id, title)
2782            .base_bg(sidebar_bg)
2783            .icon(thread.icon)
2784            .status(thread.status)
2785            .when_some(thread.icon_from_external_svg.clone(), |this, svg| {
2786                this.custom_icon_from_external_svg(svg)
2787            })
2788            .worktrees(
2789                thread
2790                    .worktrees
2791                    .iter()
2792                    .map(|wt| ThreadItemWorktreeInfo {
2793                        name: wt.name.clone(),
2794                        full_path: wt.full_path.clone(),
2795                        highlight_positions: wt.highlight_positions.clone(),
2796                    })
2797                    .collect(),
2798            )
2799            .timestamp(timestamp)
2800            .highlight_positions(thread.highlight_positions.to_vec())
2801            .title_generating(thread.is_title_generating)
2802            .notified(has_notification)
2803            .when(thread.diff_stats.lines_added > 0, |this| {
2804                this.added(thread.diff_stats.lines_added as usize)
2805            })
2806            .when(thread.diff_stats.lines_removed > 0, |this| {
2807                this.removed(thread.diff_stats.lines_removed as usize)
2808            })
2809            .selected(is_selected)
2810            .focused(is_focused)
2811            .hovered(is_hovered)
2812            .on_hover(cx.listener(move |this, is_hovered: &bool, _window, cx| {
2813                if *is_hovered {
2814                    this.hovered_thread_index = Some(ix);
2815                } else if this.hovered_thread_index == Some(ix) {
2816                    this.hovered_thread_index = None;
2817                }
2818                cx.notify();
2819            }))
2820            .when(is_hovered && is_running, |this| {
2821                this.action_slot(
2822                    IconButton::new("stop-thread", IconName::Stop)
2823                        .icon_size(IconSize::Small)
2824                        .icon_color(Color::Error)
2825                        .style(ButtonStyle::Tinted(TintColor::Error))
2826                        .tooltip(Tooltip::text("Stop Generation"))
2827                        .on_click({
2828                            let session_id = session_id_for_delete.clone();
2829                            cx.listener(move |this, _, _window, cx| {
2830                                this.stop_thread(&session_id, cx);
2831                            })
2832                        }),
2833                )
2834            })
2835            .when(is_hovered && !is_running, |this| {
2836                this.action_slot(
2837                    IconButton::new("archive-thread", IconName::Archive)
2838                        .icon_size(IconSize::Small)
2839                        .icon_color(Color::Muted)
2840                        .tooltip({
2841                            let focus_handle = focus_handle.clone();
2842                            move |_window, cx| {
2843                                Tooltip::for_action_in(
2844                                    "Archive Thread",
2845                                    &RemoveSelectedThread,
2846                                    &focus_handle,
2847                                    cx,
2848                                )
2849                            }
2850                        })
2851                        .on_click({
2852                            let session_id = session_id_for_delete.clone();
2853                            cx.listener(move |this, _, window, cx| {
2854                                this.archive_thread(&session_id, window, cx);
2855                            })
2856                        }),
2857                )
2858            })
2859            .on_click({
2860                cx.listener(move |this, _, window, cx| {
2861                    this.selection = None;
2862                    match &thread_workspace {
2863                        ThreadEntryWorkspace::Open(workspace) => {
2864                            this.activate_thread(metadata.clone(), workspace, window, cx);
2865                        }
2866                        ThreadEntryWorkspace::Closed(path_list) => {
2867                            this.open_workspace_and_activate_thread(
2868                                metadata.clone(),
2869                                path_list.clone(),
2870                                window,
2871                                cx,
2872                            );
2873                        }
2874                    }
2875                })
2876            })
2877            .into_any_element()
2878    }
2879
2880    fn render_filter_input(&self, cx: &mut Context<Self>) -> impl IntoElement {
2881        div()
2882            .min_w_0()
2883            .flex_1()
2884            .capture_action(
2885                cx.listener(|this, _: &editor::actions::Newline, window, cx| {
2886                    this.editor_confirm(window, cx);
2887                }),
2888            )
2889            .child(self.filter_editor.clone())
2890    }
2891
2892    fn render_recent_projects_button(&self, cx: &mut Context<Self>) -> impl IntoElement {
2893        let multi_workspace = self.multi_workspace.upgrade();
2894
2895        let workspace = multi_workspace
2896            .as_ref()
2897            .map(|mw| mw.read(cx).workspace().downgrade());
2898
2899        let focus_handle = workspace
2900            .as_ref()
2901            .and_then(|ws| ws.upgrade())
2902            .map(|w| w.read(cx).focus_handle(cx))
2903            .unwrap_or_else(|| cx.focus_handle());
2904
2905        let sibling_workspace_ids: HashSet<WorkspaceId> = multi_workspace
2906            .as_ref()
2907            .map(|mw| {
2908                mw.read(cx)
2909                    .workspaces()
2910                    .filter_map(|ws| ws.read(cx).database_id())
2911                    .collect()
2912            })
2913            .unwrap_or_default();
2914
2915        let popover_handle = self.recent_projects_popover_handle.clone();
2916
2917        PopoverMenu::new("sidebar-recent-projects-menu")
2918            .with_handle(popover_handle)
2919            .menu(move |window, cx| {
2920                workspace.as_ref().map(|ws| {
2921                    SidebarRecentProjects::popover(
2922                        ws.clone(),
2923                        sibling_workspace_ids.clone(),
2924                        focus_handle.clone(),
2925                        window,
2926                        cx,
2927                    )
2928                })
2929            })
2930            .trigger_with_tooltip(
2931                IconButton::new("open-project", IconName::OpenFolder)
2932                    .icon_size(IconSize::Small)
2933                    .selected_style(ButtonStyle::Tinted(TintColor::Accent)),
2934                |_window, cx| {
2935                    Tooltip::for_action(
2936                        "Add Project",
2937                        &OpenRecent {
2938                            create_new_window: false,
2939                        },
2940                        cx,
2941                    )
2942                },
2943            )
2944            .offset(gpui::Point {
2945                x: px(-2.0),
2946                y: px(-2.0),
2947            })
2948            .anchor(gpui::Corner::BottomRight)
2949    }
2950
2951    fn render_view_more(
2952        &self,
2953        ix: usize,
2954        path_list: &PathList,
2955        is_fully_expanded: bool,
2956        is_selected: bool,
2957        cx: &mut Context<Self>,
2958    ) -> AnyElement {
2959        let path_list = path_list.clone();
2960        let id = SharedString::from(format!("view-more-{}", ix));
2961
2962        let label: SharedString = if is_fully_expanded {
2963            "Collapse".into()
2964        } else {
2965            "View More".into()
2966        };
2967
2968        ThreadItem::new(id, label)
2969            .focused(is_selected)
2970            .icon_visible(false)
2971            .title_label_color(Color::Muted)
2972            .on_click(cx.listener(move |this, _, _window, cx| {
2973                this.selection = None;
2974                if is_fully_expanded {
2975                    this.expanded_groups.remove(&path_list);
2976                } else {
2977                    let current = this.expanded_groups.get(&path_list).copied().unwrap_or(0);
2978                    this.expanded_groups.insert(path_list.clone(), current + 1);
2979                }
2980                this.serialize(cx);
2981                this.update_entries(cx);
2982            }))
2983            .into_any_element()
2984    }
2985
2986    fn new_thread_in_group(
2987        &mut self,
2988        _: &NewThreadInGroup,
2989        window: &mut Window,
2990        cx: &mut Context<Self>,
2991    ) {
2992        // If there is a keyboard selection, walk backwards through
2993        // `project_header_indices` to find the header that owns the selected
2994        // row. Otherwise fall back to the active workspace.
2995        let workspace = if let Some(selected_ix) = self.selection {
2996            self.contents
2997                .project_header_indices
2998                .iter()
2999                .rev()
3000                .find(|&&header_ix| header_ix <= selected_ix)
3001                .and_then(|&header_ix| match &self.contents.entries[header_ix] {
3002                    ListEntry::ProjectHeader { workspace, .. } => Some(workspace.clone()),
3003                    _ => None,
3004                })
3005        } else {
3006            // Use the currently active workspace.
3007            self.multi_workspace
3008                .upgrade()
3009                .map(|mw| mw.read(cx).workspace().clone())
3010        };
3011
3012        let Some(workspace) = workspace else {
3013            return;
3014        };
3015
3016        self.create_new_thread(&workspace, window, cx);
3017    }
3018
3019    fn create_new_thread(
3020        &mut self,
3021        workspace: &Entity<Workspace>,
3022        window: &mut Window,
3023        cx: &mut Context<Self>,
3024    ) {
3025        let Some(multi_workspace) = self.multi_workspace.upgrade() else {
3026            return;
3027        };
3028
3029        self.active_entry = Some(ActiveEntry::Draft(workspace.clone()));
3030
3031        multi_workspace.update(cx, |multi_workspace, cx| {
3032            multi_workspace.activate(workspace.clone(), window, cx);
3033        });
3034
3035        workspace.update(cx, |workspace, cx| {
3036            if let Some(agent_panel) = workspace.panel::<AgentPanel>(cx) {
3037                agent_panel.update(cx, |panel, cx| {
3038                    panel.new_thread(&NewThread, window, cx);
3039                });
3040            }
3041            workspace.focus_panel::<AgentPanel>(window, cx);
3042        });
3043    }
3044
3045    fn render_new_thread(
3046        &self,
3047        ix: usize,
3048        _path_list: &PathList,
3049        workspace: &Entity<Workspace>,
3050        is_active: bool,
3051        worktrees: &[WorktreeInfo],
3052        is_selected: bool,
3053        cx: &mut Context<Self>,
3054    ) -> AnyElement {
3055        let label: SharedString = if is_active {
3056            self.active_draft_text(cx)
3057                .unwrap_or_else(|| DEFAULT_THREAD_TITLE.into())
3058        } else {
3059            DEFAULT_THREAD_TITLE.into()
3060        };
3061
3062        let workspace = workspace.clone();
3063        let id = SharedString::from(format!("new-thread-btn-{}", ix));
3064
3065        let thread_item = ThreadItem::new(id, label)
3066            .icon(IconName::Plus)
3067            .icon_color(Color::Custom(cx.theme().colors().icon_muted.opacity(0.8)))
3068            .worktrees(
3069                worktrees
3070                    .iter()
3071                    .map(|wt| ThreadItemWorktreeInfo {
3072                        name: wt.name.clone(),
3073                        full_path: wt.full_path.clone(),
3074                        highlight_positions: wt.highlight_positions.clone(),
3075                    })
3076                    .collect(),
3077            )
3078            .selected(is_active)
3079            .focused(is_selected)
3080            .when(!is_active, |this| {
3081                this.on_click(cx.listener(move |this, _, window, cx| {
3082                    this.selection = None;
3083                    this.create_new_thread(&workspace, window, cx);
3084                }))
3085            });
3086
3087        if is_active {
3088            div()
3089                .on_mouse_down(gpui::MouseButton::Left, |_, _, cx| {
3090                    cx.stop_propagation();
3091                })
3092                .child(thread_item)
3093                .into_any_element()
3094        } else {
3095            thread_item.into_any_element()
3096        }
3097    }
3098
3099    fn render_no_results(&self, cx: &mut Context<Self>) -> impl IntoElement {
3100        let has_query = self.has_filter_query(cx);
3101        let message = if has_query {
3102            "No threads match your search."
3103        } else {
3104            "No threads yet"
3105        };
3106
3107        v_flex()
3108            .id("sidebar-no-results")
3109            .p_4()
3110            .size_full()
3111            .items_center()
3112            .justify_center()
3113            .child(
3114                Label::new(message)
3115                    .size(LabelSize::Small)
3116                    .color(Color::Muted),
3117            )
3118    }
3119
3120    fn render_empty_state(&self, cx: &mut Context<Self>) -> impl IntoElement {
3121        v_flex()
3122            .id("sidebar-empty-state")
3123            .p_4()
3124            .size_full()
3125            .items_center()
3126            .justify_center()
3127            .gap_1()
3128            .track_focus(&self.focus_handle(cx))
3129            .child(
3130                Button::new("open_project", "Open Project")
3131                    .full_width()
3132                    .key_binding(KeyBinding::for_action(&workspace::Open::default(), cx))
3133                    .on_click(|_, window, cx| {
3134                        window.dispatch_action(
3135                            Open {
3136                                create_new_window: false,
3137                            }
3138                            .boxed_clone(),
3139                            cx,
3140                        );
3141                    }),
3142            )
3143            .child(
3144                h_flex()
3145                    .w_1_2()
3146                    .gap_2()
3147                    .child(Divider::horizontal().color(ui::DividerColor::Border))
3148                    .child(Label::new("or").size(LabelSize::XSmall).color(Color::Muted))
3149                    .child(Divider::horizontal().color(ui::DividerColor::Border)),
3150            )
3151            .child(
3152                Button::new("clone_repo", "Clone Repository")
3153                    .full_width()
3154                    .on_click(|_, window, cx| {
3155                        window.dispatch_action(git::Clone.boxed_clone(), cx);
3156                    }),
3157            )
3158    }
3159
3160    fn render_sidebar_header(
3161        &self,
3162        no_open_projects: bool,
3163        window: &Window,
3164        cx: &mut Context<Self>,
3165    ) -> impl IntoElement {
3166        let has_query = self.has_filter_query(cx);
3167        let sidebar_on_left = self.side(cx) == SidebarSide::Left;
3168        let sidebar_on_right = self.side(cx) == SidebarSide::Right;
3169        let not_fullscreen = !window.is_fullscreen();
3170        let traffic_lights = cfg!(target_os = "macos") && not_fullscreen && sidebar_on_left;
3171        let left_window_controls = !cfg!(target_os = "macos") && not_fullscreen && sidebar_on_left;
3172        let right_window_controls =
3173            !cfg!(target_os = "macos") && not_fullscreen && sidebar_on_right;
3174        let header_height = platform_title_bar_height(window);
3175
3176        h_flex()
3177            .h(header_height)
3178            .mt_px()
3179            .pb_px()
3180            .when(left_window_controls, |this| {
3181                this.children(Self::render_left_window_controls(window, cx))
3182            })
3183            .map(|this| {
3184                if traffic_lights {
3185                    this.pl(px(ui::utils::TRAFFIC_LIGHT_PADDING))
3186                } else if !left_window_controls {
3187                    this.pl_1p5()
3188                } else {
3189                    this
3190                }
3191            })
3192            .when(!right_window_controls, |this| this.pr_1p5())
3193            .gap_1()
3194            .when(!no_open_projects, |this| {
3195                this.border_b_1()
3196                    .border_color(cx.theme().colors().border)
3197                    .when(traffic_lights, |this| {
3198                        this.child(Divider::vertical().color(ui::DividerColor::Border))
3199                    })
3200                    .child(
3201                        div().ml_1().child(
3202                            Icon::new(IconName::MagnifyingGlass)
3203                                .size(IconSize::Small)
3204                                .color(Color::Muted),
3205                        ),
3206                    )
3207                    .child(self.render_filter_input(cx))
3208                    .child(
3209                        h_flex()
3210                            .gap_1()
3211                            .when(
3212                                self.selection.is_some()
3213                                    && !self.filter_editor.focus_handle(cx).is_focused(window),
3214                                |this| this.child(KeyBinding::for_action(&FocusSidebarFilter, cx)),
3215                            )
3216                            .when(has_query, |this| {
3217                                this.child(
3218                                    IconButton::new("clear_filter", IconName::Close)
3219                                        .icon_size(IconSize::Small)
3220                                        .tooltip(Tooltip::text("Clear Search"))
3221                                        .on_click(cx.listener(|this, _, window, cx| {
3222                                            this.reset_filter_editor_text(window, cx);
3223                                            this.update_entries(cx);
3224                                        })),
3225                                )
3226                            }),
3227                    )
3228            })
3229            .when(right_window_controls, |this| {
3230                this.children(Self::render_right_window_controls(window, cx))
3231            })
3232    }
3233
3234    fn render_left_window_controls(window: &Window, cx: &mut App) -> Option<AnyElement> {
3235        platform_title_bar::render_left_window_controls(
3236            cx.button_layout(),
3237            Box::new(CloseWindow),
3238            window,
3239        )
3240    }
3241
3242    fn render_right_window_controls(window: &Window, cx: &mut App) -> Option<AnyElement> {
3243        platform_title_bar::render_right_window_controls(
3244            cx.button_layout(),
3245            Box::new(CloseWindow),
3246            window,
3247        )
3248    }
3249
3250    fn render_sidebar_toggle_button(&self, _cx: &mut Context<Self>) -> impl IntoElement {
3251        let on_right = AgentSettings::get_global(_cx).sidebar_side() == SidebarSide::Right;
3252
3253        sidebar_side_context_menu("sidebar-toggle-menu", _cx)
3254            .anchor(if on_right {
3255                gpui::Corner::BottomRight
3256            } else {
3257                gpui::Corner::BottomLeft
3258            })
3259            .attach(if on_right {
3260                gpui::Corner::TopRight
3261            } else {
3262                gpui::Corner::TopLeft
3263            })
3264            .trigger(move |_is_active, _window, _cx| {
3265                let icon = if on_right {
3266                    IconName::ThreadsSidebarRightOpen
3267                } else {
3268                    IconName::ThreadsSidebarLeftOpen
3269                };
3270                IconButton::new("sidebar-close-toggle", icon)
3271                    .icon_size(IconSize::Small)
3272                    .tooltip(Tooltip::element(move |_window, cx| {
3273                        v_flex()
3274                            .gap_1()
3275                            .child(
3276                                h_flex()
3277                                    .gap_2()
3278                                    .justify_between()
3279                                    .child(Label::new("Toggle Sidebar"))
3280                                    .child(KeyBinding::for_action(&ToggleWorkspaceSidebar, cx)),
3281                            )
3282                            .child(
3283                                h_flex()
3284                                    .pt_1()
3285                                    .gap_2()
3286                                    .border_t_1()
3287                                    .border_color(cx.theme().colors().border_variant)
3288                                    .justify_between()
3289                                    .child(Label::new("Focus Sidebar"))
3290                                    .child(KeyBinding::for_action(&FocusWorkspaceSidebar, cx)),
3291                            )
3292                            .into_any_element()
3293                    }))
3294                    .on_click(|_, window, cx| {
3295                        if let Some(multi_workspace) = window.root::<MultiWorkspace>().flatten() {
3296                            multi_workspace.update(cx, |multi_workspace, cx| {
3297                                multi_workspace.close_sidebar(window, cx);
3298                            });
3299                        }
3300                    })
3301            })
3302    }
3303
3304    fn render_sidebar_bottom_bar(&mut self, cx: &mut Context<Self>) -> impl IntoElement {
3305        let on_right = self.side(cx) == SidebarSide::Right;
3306        let is_archive = matches!(self.view, SidebarView::Archive(..));
3307        let action_buttons = h_flex()
3308            .gap_1()
3309            .child(
3310                IconButton::new("archive", IconName::Archive)
3311                    .icon_size(IconSize::Small)
3312                    .toggle_state(is_archive)
3313                    .tooltip(move |_, cx| {
3314                        Tooltip::for_action("Toggle Archived Threads", &ToggleArchive, cx)
3315                    })
3316                    .on_click(cx.listener(|this, _, window, cx| {
3317                        this.toggle_archive(&ToggleArchive, window, cx);
3318                    })),
3319            )
3320            .child(self.render_recent_projects_button(cx));
3321        let border_color = cx.theme().colors().border;
3322        let toggle_button = self.render_sidebar_toggle_button(cx);
3323
3324        let bar = h_flex()
3325            .p_1()
3326            .gap_1()
3327            .justify_between()
3328            .border_t_1()
3329            .border_color(border_color);
3330
3331        if on_right {
3332            bar.child(action_buttons).child(toggle_button)
3333        } else {
3334            bar.child(toggle_button).child(action_buttons)
3335        }
3336    }
3337
3338    fn active_workspace(&self, cx: &App) -> Option<Entity<Workspace>> {
3339        self.multi_workspace
3340            .upgrade()
3341            .map(|w| w.read(cx).active_workspace())
3342    }
3343
3344    fn show_thread_import_modal(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3345        let Some(active_workspace) = self.active_workspace(cx) else {
3346            return;
3347        };
3348
3349        let Some(agent_registry_store) = AgentRegistryStore::try_global(cx) else {
3350            return;
3351        };
3352
3353        let agent_server_store = active_workspace
3354            .read(cx)
3355            .project()
3356            .read(cx)
3357            .agent_server_store()
3358            .clone();
3359
3360        let workspace_handle = active_workspace.downgrade();
3361        let multi_workspace = self.multi_workspace.clone();
3362
3363        active_workspace.update(cx, |workspace, cx| {
3364            workspace.toggle_modal(window, cx, |window, cx| {
3365                ThreadImportModal::new(
3366                    agent_server_store,
3367                    agent_registry_store,
3368                    workspace_handle.clone(),
3369                    multi_workspace.clone(),
3370                    window,
3371                    cx,
3372                )
3373            });
3374        });
3375    }
3376
3377    fn should_render_acp_import_onboarding(&self, cx: &App) -> bool {
3378        let has_external_agents = self
3379            .active_workspace(cx)
3380            .map(|ws| {
3381                ws.read(cx)
3382                    .project()
3383                    .read(cx)
3384                    .agent_server_store()
3385                    .read(cx)
3386                    .has_external_agents()
3387            })
3388            .unwrap_or(false);
3389
3390        has_external_agents && !AcpThreadImportOnboarding::dismissed(cx)
3391    }
3392
3393    fn render_acp_import_onboarding(&mut self, cx: &mut Context<Self>) -> impl IntoElement {
3394        let description =
3395            "Import threads from your ACP agents — whether started in Zed or another client.";
3396
3397        let bg = cx.theme().colors().text_accent;
3398
3399        v_flex()
3400            .min_w_0()
3401            .w_full()
3402            .p_1p5()
3403            .border_t_1()
3404            .border_color(cx.theme().colors().border)
3405            .bg(linear_gradient(
3406                360.,
3407                linear_color_stop(bg.opacity(0.06), 1.),
3408                linear_color_stop(bg.opacity(0.), 0.),
3409            ))
3410            .child(
3411                h_flex()
3412                    .min_w_0()
3413                    .w_full()
3414                    .gap_1()
3415                    .justify_between()
3416                    .child(Label::new("Looking for ACP threads?"))
3417                    .child(
3418                        IconButton::new("close-onboarding", IconName::Close)
3419                            .icon_size(IconSize::Small)
3420                            .on_click(|_, _window, cx| AcpThreadImportOnboarding::dismiss(cx)),
3421                    ),
3422            )
3423            .child(Label::new(description).color(Color::Muted).mb_2())
3424            .child(
3425                Button::new("import-acp", "Import ACP Threads")
3426                    .full_width()
3427                    .style(ButtonStyle::OutlinedCustom(cx.theme().colors().border))
3428                    .label_size(LabelSize::Small)
3429                    .start_icon(
3430                        Icon::new(IconName::ArrowDown)
3431                            .size(IconSize::XSmall)
3432                            .color(Color::Muted),
3433                    )
3434                    .on_click(cx.listener(|this, _, window, cx| {
3435                        this.show_archive(window, cx);
3436                        this.show_thread_import_modal(window, cx);
3437                    })),
3438            )
3439    }
3440
3441    fn toggle_archive(&mut self, _: &ToggleArchive, window: &mut Window, cx: &mut Context<Self>) {
3442        match &self.view {
3443            SidebarView::ThreadList => self.show_archive(window, cx),
3444            SidebarView::Archive(_) => self.show_thread_list(window, cx),
3445        }
3446    }
3447
3448    fn show_archive(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3449        let Some(active_workspace) = self
3450            .multi_workspace
3451            .upgrade()
3452            .map(|w| w.read(cx).active_workspace())
3453        else {
3454            return;
3455        };
3456        let Some(agent_panel) = active_workspace.read(cx).panel::<AgentPanel>(cx) else {
3457            return;
3458        };
3459        let Some(agent_registry_store) = AgentRegistryStore::try_global(cx) else {
3460            return;
3461        };
3462
3463        let agent_server_store = active_workspace
3464            .read(cx)
3465            .project()
3466            .read(cx)
3467            .agent_server_store()
3468            .downgrade();
3469
3470        let agent_connection_store = agent_panel.read(cx).connection_store().downgrade();
3471
3472        let archive_view = cx.new(|cx| {
3473            ThreadsArchiveView::new(
3474                agent_connection_store.clone(),
3475                agent_server_store.clone(),
3476                agent_registry_store.downgrade(),
3477                active_workspace.downgrade(),
3478                self.multi_workspace.clone(),
3479                window,
3480                cx,
3481            )
3482        });
3483
3484        let subscription = cx.subscribe_in(
3485            &archive_view,
3486            window,
3487            |this, _, event: &ThreadsArchiveViewEvent, window, cx| match event {
3488                ThreadsArchiveViewEvent::Close => {
3489                    this.show_thread_list(window, cx);
3490                }
3491                ThreadsArchiveViewEvent::Unarchive { thread } => {
3492                    this.show_thread_list(window, cx);
3493                    this.activate_archived_thread(thread.clone(), window, cx);
3494                }
3495            },
3496        );
3497
3498        self._subscriptions.push(subscription);
3499        self.view = SidebarView::Archive(archive_view.clone());
3500        archive_view.update(cx, |view, cx| view.focus_filter_editor(window, cx));
3501        self.serialize(cx);
3502        cx.notify();
3503    }
3504
3505    fn show_thread_list(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3506        self.view = SidebarView::ThreadList;
3507        self._subscriptions.clear();
3508        let handle = self.filter_editor.read(cx).focus_handle(cx);
3509        handle.focus(window, cx);
3510        self.serialize(cx);
3511        cx.notify();
3512    }
3513}
3514
3515impl WorkspaceSidebar for Sidebar {
3516    fn width(&self, _cx: &App) -> Pixels {
3517        self.width
3518    }
3519
3520    fn set_width(&mut self, width: Option<Pixels>, cx: &mut Context<Self>) {
3521        self.width = width.unwrap_or(DEFAULT_WIDTH).clamp(MIN_WIDTH, MAX_WIDTH);
3522        cx.notify();
3523    }
3524
3525    fn has_notifications(&self, _cx: &App) -> bool {
3526        !self.contents.notified_threads.is_empty()
3527    }
3528
3529    fn is_threads_list_view_active(&self) -> bool {
3530        matches!(self.view, SidebarView::ThreadList)
3531    }
3532
3533    fn side(&self, cx: &App) -> SidebarSide {
3534        AgentSettings::get_global(cx).sidebar_side()
3535    }
3536
3537    fn prepare_for_focus(&mut self, _window: &mut Window, cx: &mut Context<Self>) {
3538        self.selection = None;
3539        cx.notify();
3540    }
3541
3542    fn toggle_thread_switcher(
3543        &mut self,
3544        select_last: bool,
3545        window: &mut Window,
3546        cx: &mut Context<Self>,
3547    ) {
3548        self.toggle_thread_switcher_impl(select_last, window, cx);
3549    }
3550
3551    fn serialized_state(&self, _cx: &App) -> Option<String> {
3552        let serialized = SerializedSidebar {
3553            width: Some(f32::from(self.width)),
3554            collapsed_groups: self
3555                .collapsed_groups
3556                .iter()
3557                .map(|pl| pl.serialize())
3558                .collect(),
3559            expanded_groups: self
3560                .expanded_groups
3561                .iter()
3562                .map(|(pl, count)| (pl.serialize(), *count))
3563                .collect(),
3564            active_view: match self.view {
3565                SidebarView::ThreadList => SerializedSidebarView::ThreadList,
3566                SidebarView::Archive(_) => SerializedSidebarView::Archive,
3567            },
3568        };
3569        serde_json::to_string(&serialized).ok()
3570    }
3571
3572    fn restore_serialized_state(
3573        &mut self,
3574        state: &str,
3575        window: &mut Window,
3576        cx: &mut Context<Self>,
3577    ) {
3578        if let Some(serialized) = serde_json::from_str::<SerializedSidebar>(state).log_err() {
3579            if let Some(width) = serialized.width {
3580                self.width = px(width).clamp(MIN_WIDTH, MAX_WIDTH);
3581            }
3582            self.collapsed_groups = serialized
3583                .collapsed_groups
3584                .into_iter()
3585                .map(|s| PathList::deserialize(&s))
3586                .collect();
3587            self.expanded_groups = serialized
3588                .expanded_groups
3589                .into_iter()
3590                .map(|(s, count)| (PathList::deserialize(&s), count))
3591                .collect();
3592            if serialized.active_view == SerializedSidebarView::Archive {
3593                self.show_archive(window, cx);
3594            }
3595        }
3596        cx.notify();
3597    }
3598}
3599
3600impl gpui::EventEmitter<workspace::SidebarEvent> for Sidebar {}
3601
3602impl Focusable for Sidebar {
3603    fn focus_handle(&self, _cx: &App) -> FocusHandle {
3604        self.focus_handle.clone()
3605    }
3606}
3607
3608impl Render for Sidebar {
3609    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
3610        let _titlebar_height = ui::utils::platform_title_bar_height(window);
3611        let ui_font = theme_settings::setup_ui_font(window, cx);
3612        let sticky_header = self.render_sticky_header(window, cx);
3613
3614        let color = cx.theme().colors();
3615        let bg = color
3616            .title_bar_background
3617            .blend(color.panel_background.opacity(0.32));
3618
3619        let no_open_projects = !self.contents.has_open_projects;
3620        let no_search_results = self.contents.entries.is_empty();
3621
3622        v_flex()
3623            .id("workspace-sidebar")
3624            .key_context(self.dispatch_context(window, cx))
3625            .track_focus(&self.focus_handle)
3626            .on_action(cx.listener(Self::select_next))
3627            .on_action(cx.listener(Self::select_previous))
3628            .on_action(cx.listener(Self::editor_move_down))
3629            .on_action(cx.listener(Self::editor_move_up))
3630            .on_action(cx.listener(Self::select_first))
3631            .on_action(cx.listener(Self::select_last))
3632            .on_action(cx.listener(Self::confirm))
3633            .on_action(cx.listener(Self::expand_selected_entry))
3634            .on_action(cx.listener(Self::collapse_selected_entry))
3635            .on_action(cx.listener(Self::toggle_selected_fold))
3636            .on_action(cx.listener(Self::fold_all))
3637            .on_action(cx.listener(Self::unfold_all))
3638            .on_action(cx.listener(Self::cancel))
3639            .on_action(cx.listener(Self::remove_selected_thread))
3640            .on_action(cx.listener(Self::new_thread_in_group))
3641            .on_action(cx.listener(Self::toggle_archive))
3642            .on_action(cx.listener(Self::focus_sidebar_filter))
3643            .on_action(cx.listener(Self::on_toggle_thread_switcher))
3644            .on_action(cx.listener(|this, _: &OpenRecent, window, cx| {
3645                this.recent_projects_popover_handle.toggle(window, cx);
3646            }))
3647            .font(ui_font)
3648            .h_full()
3649            .w(self.width)
3650            .bg(bg)
3651            .when(self.side(cx) == SidebarSide::Left, |el| el.border_r_1())
3652            .when(self.side(cx) == SidebarSide::Right, |el| el.border_l_1())
3653            .border_color(color.border)
3654            .map(|this| match &self.view {
3655                SidebarView::ThreadList => this
3656                    .child(self.render_sidebar_header(no_open_projects, window, cx))
3657                    .map(|this| {
3658                        if no_open_projects {
3659                            this.child(self.render_empty_state(cx))
3660                        } else {
3661                            this.child(
3662                                v_flex()
3663                                    .relative()
3664                                    .flex_1()
3665                                    .overflow_hidden()
3666                                    .child(
3667                                        list(
3668                                            self.list_state.clone(),
3669                                            cx.processor(Self::render_list_entry),
3670                                        )
3671                                        .flex_1()
3672                                        .size_full(),
3673                                    )
3674                                    .when(no_search_results, |this| {
3675                                        this.child(self.render_no_results(cx))
3676                                    })
3677                                    .when_some(sticky_header, |this, header| this.child(header))
3678                                    .vertical_scrollbar_for(&self.list_state, window, cx),
3679                            )
3680                        }
3681                    }),
3682                SidebarView::Archive(archive_view) => this.child(archive_view.clone()),
3683            })
3684            .when(self.should_render_acp_import_onboarding(cx), |this| {
3685                this.child(self.render_acp_import_onboarding(cx))
3686            })
3687            .child(self.render_sidebar_bottom_bar(cx))
3688    }
3689}
3690
3691fn all_thread_infos_for_workspace(
3692    workspace: &Entity<Workspace>,
3693    cx: &App,
3694) -> impl Iterator<Item = ActiveThreadInfo> {
3695    let Some(agent_panel) = workspace.read(cx).panel::<AgentPanel>(cx) else {
3696        return None.into_iter().flatten();
3697    };
3698    let agent_panel = agent_panel.read(cx);
3699
3700    let threads = agent_panel
3701        .parent_threads(cx)
3702        .into_iter()
3703        .map(|thread_view| {
3704            let thread_view_ref = thread_view.read(cx);
3705            let thread = thread_view_ref.thread.read(cx);
3706
3707            let icon = thread_view_ref.agent_icon;
3708            let icon_from_external_svg = thread_view_ref.agent_icon_from_external_svg.clone();
3709            let title = thread
3710                .title()
3711                .unwrap_or_else(|| DEFAULT_THREAD_TITLE.into());
3712            let is_native = thread_view_ref.as_native_thread(cx).is_some();
3713            let is_title_generating = is_native && thread.has_provisional_title();
3714            let session_id = thread.session_id().clone();
3715            let is_background = agent_panel.is_background_thread(&session_id);
3716
3717            let status = if thread.is_waiting_for_confirmation() {
3718                AgentThreadStatus::WaitingForConfirmation
3719            } else if thread.had_error() {
3720                AgentThreadStatus::Error
3721            } else {
3722                match thread.status() {
3723                    ThreadStatus::Generating => AgentThreadStatus::Running,
3724                    ThreadStatus::Idle => AgentThreadStatus::Completed,
3725                }
3726            };
3727
3728            let diff_stats = thread.action_log().read(cx).diff_stats(cx);
3729
3730            ActiveThreadInfo {
3731                session_id,
3732                title,
3733                status,
3734                icon,
3735                icon_from_external_svg,
3736                is_background,
3737                is_title_generating,
3738                diff_stats,
3739            }
3740        });
3741
3742    Some(threads).into_iter().flatten()
3743}
3744
3745pub fn dump_workspace_info(
3746    workspace: &mut Workspace,
3747    _: &DumpWorkspaceInfo,
3748    window: &mut gpui::Window,
3749    cx: &mut gpui::Context<Workspace>,
3750) {
3751    use std::fmt::Write;
3752
3753    let mut output = String::new();
3754    let this_entity = cx.entity();
3755
3756    let multi_workspace = workspace.multi_workspace().and_then(|weak| weak.upgrade());
3757    let workspaces: Vec<gpui::Entity<Workspace>> = match &multi_workspace {
3758        Some(mw) => mw.read(cx).workspaces().collect::<Vec<_>>(),
3759        None => vec![this_entity.clone()],
3760    };
3761    let active_workspace = multi_workspace
3762        .as_ref()
3763        .map(|mw| mw.read(cx).active_workspace());
3764
3765    writeln!(output, "MultiWorkspace: {} workspace(s)", workspaces.len()).ok();
3766    writeln!(output).ok();
3767
3768    for (index, ws) in workspaces.iter().enumerate() {
3769        let is_active = active_workspace.as_ref() == Some(ws);
3770        writeln!(
3771            output,
3772            "--- Workspace {index}{} ---",
3773            if is_active { " (active)" } else { "" }
3774        )
3775        .ok();
3776
3777        // The action handler is already inside an update on `this_entity`,
3778        // so we must avoid a nested read/update on that same entity.
3779        if *ws == this_entity {
3780            dump_single_workspace(workspace, &mut output, cx);
3781        } else {
3782            ws.read_with(cx, |ws, cx| {
3783                dump_single_workspace(ws, &mut output, cx);
3784            });
3785        }
3786    }
3787
3788    let project = workspace.project().clone();
3789    cx.spawn_in(window, async move |_this, cx| {
3790        let buffer = project
3791            .update(cx, |project, cx| project.create_buffer(None, false, cx))
3792            .await?;
3793
3794        buffer.update(cx, |buffer, cx| {
3795            buffer.set_text(output, cx);
3796        });
3797
3798        let buffer = cx.new(|cx| {
3799            editor::MultiBuffer::singleton(buffer, cx).with_title("Workspace Info".into())
3800        });
3801
3802        _this.update_in(cx, |workspace, window, cx| {
3803            workspace.add_item_to_active_pane(
3804                Box::new(cx.new(|cx| {
3805                    let mut editor =
3806                        editor::Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
3807                    editor.set_read_only(true);
3808                    editor.set_should_serialize(false, cx);
3809                    editor.set_breadcrumb_header("Workspace Info".into());
3810                    editor
3811                })),
3812                None,
3813                true,
3814                window,
3815                cx,
3816            );
3817        })
3818    })
3819    .detach_and_log_err(cx);
3820}
3821
3822fn dump_single_workspace(workspace: &Workspace, output: &mut String, cx: &gpui::App) {
3823    use std::fmt::Write;
3824
3825    let workspace_db_id = workspace.database_id();
3826    match workspace_db_id {
3827        Some(id) => writeln!(output, "Workspace DB ID: {id:?}").ok(),
3828        None => writeln!(output, "Workspace DB ID: (none)").ok(),
3829    };
3830
3831    let project = workspace.project().read(cx);
3832
3833    let repos: Vec<_> = project
3834        .repositories(cx)
3835        .values()
3836        .map(|repo| repo.read(cx).snapshot())
3837        .collect();
3838
3839    writeln!(output, "Worktrees:").ok();
3840    for worktree in project.worktrees(cx) {
3841        let worktree = worktree.read(cx);
3842        let abs_path = worktree.abs_path();
3843        let visible = worktree.is_visible();
3844
3845        let repo_info = repos
3846            .iter()
3847            .find(|snapshot| abs_path.starts_with(&*snapshot.work_directory_abs_path));
3848
3849        let is_linked = repo_info.map(|s| s.is_linked_worktree()).unwrap_or(false);
3850        let original_repo_path = repo_info.map(|s| &s.original_repo_abs_path);
3851        let branch = repo_info.and_then(|s| s.branch.as_ref().map(|b| b.ref_name.clone()));
3852
3853        write!(output, "  - {}", abs_path.display()).ok();
3854        if !visible {
3855            write!(output, " (hidden)").ok();
3856        }
3857        if let Some(branch) = &branch {
3858            write!(output, " [branch: {branch}]").ok();
3859        }
3860        if is_linked {
3861            if let Some(original) = original_repo_path {
3862                write!(output, " [linked worktree -> {}]", original.display()).ok();
3863            } else {
3864                write!(output, " [linked worktree]").ok();
3865            }
3866        }
3867        writeln!(output).ok();
3868    }
3869
3870    if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
3871        let panel = panel.read(cx);
3872
3873        let panel_workspace_id = panel.workspace_id();
3874        if panel_workspace_id != workspace_db_id {
3875            writeln!(
3876                output,
3877                "  \u{26a0} workspace ID mismatch! panel has {panel_workspace_id:?}, workspace has {workspace_db_id:?}"
3878            )
3879            .ok();
3880        }
3881
3882        if let Some(thread) = panel.active_agent_thread(cx) {
3883            let thread = thread.read(cx);
3884            let title = thread.title().unwrap_or_else(|| "(untitled)".into());
3885            let session_id = thread.session_id();
3886            let status = match thread.status() {
3887                ThreadStatus::Idle => "idle",
3888                ThreadStatus::Generating => "generating",
3889            };
3890            let entry_count = thread.entries().len();
3891            write!(output, "Active thread: {title} (session: {session_id})").ok();
3892            write!(output, " [{status}, {entry_count} entries").ok();
3893            if thread.is_waiting_for_confirmation() {
3894                write!(output, ", awaiting confirmation").ok();
3895            }
3896            writeln!(output, "]").ok();
3897        } else {
3898            writeln!(output, "Active thread: (none)").ok();
3899        }
3900
3901        let background_threads = panel.background_threads();
3902        if !background_threads.is_empty() {
3903            writeln!(
3904                output,
3905                "Background threads ({}): ",
3906                background_threads.len()
3907            )
3908            .ok();
3909            for (session_id, conversation_view) in background_threads {
3910                if let Some(thread_view) = conversation_view.read(cx).root_thread(cx) {
3911                    let thread = thread_view.read(cx).thread.read(cx);
3912                    let title = thread.title().unwrap_or_else(|| "(untitled)".into());
3913                    let status = match thread.status() {
3914                        ThreadStatus::Idle => "idle",
3915                        ThreadStatus::Generating => "generating",
3916                    };
3917                    let entry_count = thread.entries().len();
3918                    write!(output, "  - {title} (session: {session_id})").ok();
3919                    write!(output, " [{status}, {entry_count} entries").ok();
3920                    if thread.is_waiting_for_confirmation() {
3921                        write!(output, ", awaiting confirmation").ok();
3922                    }
3923                    writeln!(output, "]").ok();
3924                } else {
3925                    writeln!(output, "  - (not connected) (session: {session_id})").ok();
3926                }
3927            }
3928        }
3929    } else {
3930        writeln!(output, "Agent panel: not loaded").ok();
3931    }
3932
3933    writeln!(output).ok();
3934}