workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod item;
    4mod modal_layer;
    5pub mod notifications;
    6pub mod pane;
    7pub mod pane_group;
    8mod persistence;
    9pub mod searchable;
   10pub mod shared_screen;
   11mod status_bar;
   12pub mod tasks;
   13mod theme_preview;
   14mod toast_layer;
   15mod toolbar;
   16mod workspace_settings;
   17
   18use client::CloudUserStore;
   19pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   20
   21use anyhow::{Context as _, Result, anyhow};
   22use call::{ActiveCall, call_settings::CallSettings};
   23use client::{
   24    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   25    proto::{self, ErrorCode, PanelId, PeerId},
   26};
   27use collections::{HashMap, HashSet, hash_map};
   28pub use dock::Panel;
   29use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   30use futures::{
   31    Future, FutureExt, StreamExt,
   32    channel::{
   33        mpsc::{self, UnboundedReceiver, UnboundedSender},
   34        oneshot,
   35    },
   36    future::{Shared, try_join_all},
   37};
   38use gpui::{
   39    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   40    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   41    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   42    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   43    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   44    point, relative, size, transparent_black,
   45};
   46pub use history_manager::*;
   47pub use item::{
   48    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   49    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   50};
   51use itertools::Itertools;
   52use language::{Buffer, LanguageRegistry, Rope};
   53pub use modal_layer::*;
   54use node_runtime::NodeRuntime;
   55use notifications::{
   56    DetachAndPromptErr, Notifications, dismiss_app_notification,
   57    simple_message_notification::MessageNotification,
   58};
   59pub use pane::*;
   60pub use pane_group::*;
   61use persistence::{
   62    DB, SerializedWindowBounds,
   63    model::{SerializedSshProject, SerializedWorkspace},
   64};
   65pub use persistence::{
   66    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   67    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   68};
   69use postage::stream::Stream;
   70use project::{
   71    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   72    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   73};
   74use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   75use schemars::JsonSchema;
   76use serde::Deserialize;
   77use session::AppSession;
   78use settings::Settings;
   79use shared_screen::SharedScreen;
   80use sqlez::{
   81    bindable::{Bind, Column, StaticColumnCount},
   82    statement::Statement,
   83};
   84use status_bar::StatusBar;
   85pub use status_bar::StatusItemView;
   86use std::{
   87    any::TypeId,
   88    borrow::Cow,
   89    cell::RefCell,
   90    cmp,
   91    collections::{VecDeque, hash_map::DefaultHasher},
   92    env,
   93    hash::{Hash, Hasher},
   94    path::{Path, PathBuf},
   95    process::ExitStatus,
   96    rc::Rc,
   97    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
   98    time::Duration,
   99};
  100use task::{DebugScenario, SpawnInTerminal, TaskContext};
  101use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  102pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  103pub use ui;
  104use ui::{Window, prelude::*};
  105use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  106use uuid::Uuid;
  107pub use workspace_settings::{
  108    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  109};
  110use zed_actions::{Spawn, feedback::FileBugReport};
  111
  112use crate::notifications::NotificationId;
  113use crate::persistence::{
  114    SerializedAxis,
  115    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  116};
  117
  118pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  119
  120static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  121    env::var("ZED_WINDOW_SIZE")
  122        .ok()
  123        .as_deref()
  124        .and_then(parse_pixel_size_env_var)
  125});
  126
  127static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  128    env::var("ZED_WINDOW_POSITION")
  129        .ok()
  130        .as_deref()
  131        .and_then(parse_pixel_position_env_var)
  132});
  133
  134pub trait TerminalProvider {
  135    fn spawn(
  136        &self,
  137        task: SpawnInTerminal,
  138        window: &mut Window,
  139        cx: &mut App,
  140    ) -> Task<Option<Result<ExitStatus>>>;
  141}
  142
  143pub trait DebuggerProvider {
  144    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  145    fn start_session(
  146        &self,
  147        definition: DebugScenario,
  148        task_context: TaskContext,
  149        active_buffer: Option<Entity<Buffer>>,
  150        worktree_id: Option<WorktreeId>,
  151        window: &mut Window,
  152        cx: &mut App,
  153    );
  154
  155    fn spawn_task_or_modal(
  156        &self,
  157        workspace: &mut Workspace,
  158        action: &Spawn,
  159        window: &mut Window,
  160        cx: &mut Context<Workspace>,
  161    );
  162
  163    fn task_scheduled(&self, cx: &mut App);
  164    fn debug_scenario_scheduled(&self, cx: &mut App);
  165    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  166
  167    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  168}
  169
  170actions!(
  171    workspace,
  172    [
  173        /// Activates the next pane in the workspace.
  174        ActivateNextPane,
  175        /// Activates the previous pane in the workspace.
  176        ActivatePreviousPane,
  177        /// Switches to the next window.
  178        ActivateNextWindow,
  179        /// Switches to the previous window.
  180        ActivatePreviousWindow,
  181        /// Adds a folder to the current project.
  182        AddFolderToProject,
  183        /// Clears all notifications.
  184        ClearAllNotifications,
  185        /// Closes the active dock.
  186        CloseActiveDock,
  187        /// Closes all docks.
  188        CloseAllDocks,
  189        /// Closes the current window.
  190        CloseWindow,
  191        /// Opens the feedback dialog.
  192        Feedback,
  193        /// Follows the next collaborator in the session.
  194        FollowNextCollaborator,
  195        /// Moves the focused panel to the next position.
  196        MoveFocusedPanelToNextPosition,
  197        /// Opens a new terminal in the center.
  198        NewCenterTerminal,
  199        /// Creates a new file.
  200        NewFile,
  201        /// Creates a new file in a vertical split.
  202        NewFileSplitVertical,
  203        /// Creates a new file in a horizontal split.
  204        NewFileSplitHorizontal,
  205        /// Opens a new search.
  206        NewSearch,
  207        /// Opens a new terminal.
  208        NewTerminal,
  209        /// Opens a new window.
  210        NewWindow,
  211        /// Opens a file or directory.
  212        Open,
  213        /// Opens multiple files.
  214        OpenFiles,
  215        /// Opens the current location in terminal.
  216        OpenInTerminal,
  217        /// Opens the component preview.
  218        OpenComponentPreview,
  219        /// Reloads the active item.
  220        ReloadActiveItem,
  221        /// Resets the active dock to its default size.
  222        ResetActiveDockSize,
  223        /// Resets all open docks to their default sizes.
  224        ResetOpenDocksSize,
  225        /// Saves the current file with a new name.
  226        SaveAs,
  227        /// Saves without formatting.
  228        SaveWithoutFormat,
  229        /// Shuts down all debug adapters.
  230        ShutdownDebugAdapters,
  231        /// Suppresses the current notification.
  232        SuppressNotification,
  233        /// Toggles the bottom dock.
  234        ToggleBottomDock,
  235        /// Toggles centered layout mode.
  236        ToggleCenteredLayout,
  237        /// Toggles the left dock.
  238        ToggleLeftDock,
  239        /// Toggles the right dock.
  240        ToggleRightDock,
  241        /// Toggles zoom on the active pane.
  242        ToggleZoom,
  243        /// Stops following a collaborator.
  244        Unfollow,
  245        /// Shows the welcome screen.
  246        Welcome,
  247        /// Restores the banner.
  248        RestoreBanner,
  249        /// Toggles expansion of the selected item.
  250        ToggleExpandItem,
  251    ]
  252);
  253
  254#[derive(Clone, PartialEq)]
  255pub struct OpenPaths {
  256    pub paths: Vec<PathBuf>,
  257}
  258
  259/// Activates a specific pane by its index.
  260#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  261#[action(namespace = workspace)]
  262pub struct ActivatePane(pub usize);
  263
  264/// Moves an item to a specific pane by index.
  265#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  266#[action(namespace = workspace)]
  267#[serde(deny_unknown_fields)]
  268pub struct MoveItemToPane {
  269    #[serde(default = "default_1")]
  270    pub destination: usize,
  271    #[serde(default = "default_true")]
  272    pub focus: bool,
  273    #[serde(default)]
  274    pub clone: bool,
  275}
  276
  277fn default_1() -> usize {
  278    1
  279}
  280
  281/// Moves an item to a pane in the specified direction.
  282#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  283#[action(namespace = workspace)]
  284#[serde(deny_unknown_fields)]
  285pub struct MoveItemToPaneInDirection {
  286    #[serde(default = "default_right")]
  287    pub direction: SplitDirection,
  288    #[serde(default = "default_true")]
  289    pub focus: bool,
  290    #[serde(default)]
  291    pub clone: bool,
  292}
  293
  294fn default_right() -> SplitDirection {
  295    SplitDirection::Right
  296}
  297
  298/// Saves all open files in the workspace.
  299#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  300#[action(namespace = workspace)]
  301#[serde(deny_unknown_fields)]
  302pub struct SaveAll {
  303    #[serde(default)]
  304    pub save_intent: Option<SaveIntent>,
  305}
  306
  307/// Saves the current file with the specified options.
  308#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  309#[action(namespace = workspace)]
  310#[serde(deny_unknown_fields)]
  311pub struct Save {
  312    #[serde(default)]
  313    pub save_intent: Option<SaveIntent>,
  314}
  315
  316/// Closes all items and panes in the workspace.
  317#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  318#[action(namespace = workspace)]
  319#[serde(deny_unknown_fields)]
  320pub struct CloseAllItemsAndPanes {
  321    #[serde(default)]
  322    pub save_intent: Option<SaveIntent>,
  323}
  324
  325/// Closes all inactive tabs and panes in the workspace.
  326#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  327#[action(namespace = workspace)]
  328#[serde(deny_unknown_fields)]
  329pub struct CloseInactiveTabsAndPanes {
  330    #[serde(default)]
  331    pub save_intent: Option<SaveIntent>,
  332}
  333
  334/// Sends a sequence of keystrokes to the active element.
  335#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  336#[action(namespace = workspace)]
  337pub struct SendKeystrokes(pub String);
  338
  339/// Reloads the active item or workspace.
  340#[derive(Clone, Deserialize, PartialEq, Default, JsonSchema, Action)]
  341#[action(namespace = workspace)]
  342#[serde(deny_unknown_fields)]
  343pub struct Reload {
  344    pub binary_path: Option<PathBuf>,
  345}
  346
  347actions!(
  348    project_symbols,
  349    [
  350        /// Toggles the project symbols search.
  351        #[action(name = "Toggle")]
  352        ToggleProjectSymbols
  353    ]
  354);
  355
  356/// Toggles the file finder interface.
  357#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  358#[action(namespace = file_finder, name = "Toggle")]
  359#[serde(deny_unknown_fields)]
  360pub struct ToggleFileFinder {
  361    #[serde(default)]
  362    pub separate_history: bool,
  363}
  364
  365/// Increases size of a currently focused dock by a given amount of pixels.
  366#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  367#[action(namespace = workspace)]
  368#[serde(deny_unknown_fields)]
  369pub struct IncreaseActiveDockSize {
  370    /// For 0px parameter, uses UI font size value.
  371    #[serde(default)]
  372    pub px: u32,
  373}
  374
  375/// Decreases size of a currently focused dock by a given amount of pixels.
  376#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  377#[action(namespace = workspace)]
  378#[serde(deny_unknown_fields)]
  379pub struct DecreaseActiveDockSize {
  380    /// For 0px parameter, uses UI font size value.
  381    #[serde(default)]
  382    pub px: u32,
  383}
  384
  385/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  386#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  387#[action(namespace = workspace)]
  388#[serde(deny_unknown_fields)]
  389pub struct IncreaseOpenDocksSize {
  390    /// For 0px parameter, uses UI font size value.
  391    #[serde(default)]
  392    pub px: u32,
  393}
  394
  395/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  396#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  397#[action(namespace = workspace)]
  398#[serde(deny_unknown_fields)]
  399pub struct DecreaseOpenDocksSize {
  400    /// For 0px parameter, uses UI font size value.
  401    #[serde(default)]
  402    pub px: u32,
  403}
  404
  405actions!(
  406    workspace,
  407    [
  408        /// Activates the pane to the left.
  409        ActivatePaneLeft,
  410        /// Activates the pane to the right.
  411        ActivatePaneRight,
  412        /// Activates the pane above.
  413        ActivatePaneUp,
  414        /// Activates the pane below.
  415        ActivatePaneDown,
  416        /// Swaps the current pane with the one to the left.
  417        SwapPaneLeft,
  418        /// Swaps the current pane with the one to the right.
  419        SwapPaneRight,
  420        /// Swaps the current pane with the one above.
  421        SwapPaneUp,
  422        /// Swaps the current pane with the one below.
  423        SwapPaneDown,
  424    ]
  425);
  426
  427#[derive(PartialEq, Eq, Debug)]
  428pub enum CloseIntent {
  429    /// Quit the program entirely.
  430    Quit,
  431    /// Close a window.
  432    CloseWindow,
  433    /// Replace the workspace in an existing window.
  434    ReplaceWindow,
  435}
  436
  437#[derive(Clone)]
  438pub struct Toast {
  439    id: NotificationId,
  440    msg: Cow<'static, str>,
  441    autohide: bool,
  442    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  443}
  444
  445impl Toast {
  446    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  447        Toast {
  448            id,
  449            msg: msg.into(),
  450            on_click: None,
  451            autohide: false,
  452        }
  453    }
  454
  455    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  456    where
  457        M: Into<Cow<'static, str>>,
  458        F: Fn(&mut Window, &mut App) + 'static,
  459    {
  460        self.on_click = Some((message.into(), Arc::new(on_click)));
  461        self
  462    }
  463
  464    pub fn autohide(mut self) -> Self {
  465        self.autohide = true;
  466        self
  467    }
  468}
  469
  470impl PartialEq for Toast {
  471    fn eq(&self, other: &Self) -> bool {
  472        self.id == other.id
  473            && self.msg == other.msg
  474            && self.on_click.is_some() == other.on_click.is_some()
  475    }
  476}
  477
  478/// Opens a new terminal with the specified working directory.
  479#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  480#[action(namespace = workspace)]
  481#[serde(deny_unknown_fields)]
  482pub struct OpenTerminal {
  483    pub working_directory: PathBuf,
  484}
  485
  486#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  487pub struct WorkspaceId(i64);
  488
  489impl StaticColumnCount for WorkspaceId {}
  490impl Bind for WorkspaceId {
  491    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  492        self.0.bind(statement, start_index)
  493    }
  494}
  495impl Column for WorkspaceId {
  496    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  497        i64::column(statement, start_index)
  498            .map(|(i, next_index)| (Self(i), next_index))
  499            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  500    }
  501}
  502impl From<WorkspaceId> for i64 {
  503    fn from(val: WorkspaceId) -> Self {
  504        val.0
  505    }
  506}
  507
  508pub fn init_settings(cx: &mut App) {
  509    WorkspaceSettings::register(cx);
  510    ItemSettings::register(cx);
  511    PreviewTabsSettings::register(cx);
  512    TabBarSettings::register(cx);
  513}
  514
  515fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  516    let paths = cx.prompt_for_paths(options);
  517    cx.spawn(
  518        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  519            Ok(Some(paths)) => {
  520                cx.update(|cx| {
  521                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  522                })
  523                .ok();
  524            }
  525            Ok(None) => {}
  526            Err(err) => {
  527                util::log_err(&err);
  528                cx.update(|cx| {
  529                    if let Some(workspace_window) = cx
  530                        .active_window()
  531                        .and_then(|window| window.downcast::<Workspace>())
  532                    {
  533                        workspace_window
  534                            .update(cx, |workspace, _, cx| {
  535                                workspace.show_portal_error(err.to_string(), cx);
  536                            })
  537                            .ok();
  538                    }
  539                })
  540                .ok();
  541            }
  542        },
  543    )
  544    .detach();
  545}
  546
  547pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  548    init_settings(cx);
  549    component::init();
  550    theme_preview::init(cx);
  551    toast_layer::init(cx);
  552    history_manager::init(cx);
  553
  554    cx.on_action(Workspace::close_global);
  555    cx.on_action(reload);
  556
  557    cx.on_action({
  558        let app_state = Arc::downgrade(&app_state);
  559        move |_: &Open, cx: &mut App| {
  560            if let Some(app_state) = app_state.upgrade() {
  561                prompt_and_open_paths(
  562                    app_state,
  563                    PathPromptOptions {
  564                        files: true,
  565                        directories: true,
  566                        multiple: true,
  567                    },
  568                    cx,
  569                );
  570            }
  571        }
  572    });
  573    cx.on_action({
  574        let app_state = Arc::downgrade(&app_state);
  575        move |_: &OpenFiles, cx: &mut App| {
  576            let directories = cx.can_select_mixed_files_and_dirs();
  577            if let Some(app_state) = app_state.upgrade() {
  578                prompt_and_open_paths(
  579                    app_state,
  580                    PathPromptOptions {
  581                        files: true,
  582                        directories,
  583                        multiple: true,
  584                    },
  585                    cx,
  586                );
  587            }
  588        }
  589    });
  590}
  591
  592type BuildProjectItemFn =
  593    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  594
  595type BuildProjectItemForPathFn =
  596    fn(
  597        &Entity<Project>,
  598        &ProjectPath,
  599        &mut Window,
  600        &mut App,
  601    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  602
  603#[derive(Clone, Default)]
  604struct ProjectItemRegistry {
  605    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  606    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  607}
  608
  609impl ProjectItemRegistry {
  610    fn register<T: ProjectItem>(&mut self) {
  611        self.build_project_item_fns_by_type.insert(
  612            TypeId::of::<T::Item>(),
  613            |item, project, pane, window, cx| {
  614                let item = item.downcast().unwrap();
  615                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  616                    as Box<dyn ItemHandle>
  617            },
  618        );
  619        self.build_project_item_for_path_fns
  620            .push(|project, project_path, window, cx| {
  621                let project_item =
  622                    <T::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
  623                let project = project.clone();
  624                Some(window.spawn(cx, async move |cx| {
  625                    let project_item = project_item.await?;
  626                    let project_entry_id: Option<ProjectEntryId> =
  627                        project_item.read_with(cx, project::ProjectItem::entry_id)?;
  628                    let build_workspace_item = Box::new(
  629                        |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  630                            Box::new(cx.new(|cx| {
  631                                T::for_project_item(project, Some(pane), project_item, window, cx)
  632                            })) as Box<dyn ItemHandle>
  633                        },
  634                    ) as Box<_>;
  635                    Ok((project_entry_id, build_workspace_item))
  636                }))
  637            });
  638    }
  639
  640    fn open_path(
  641        &self,
  642        project: &Entity<Project>,
  643        path: &ProjectPath,
  644        window: &mut Window,
  645        cx: &mut App,
  646    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  647        let Some(open_project_item) = self
  648            .build_project_item_for_path_fns
  649            .iter()
  650            .rev()
  651            .find_map(|open_project_item| open_project_item(&project, &path, window, cx))
  652        else {
  653            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  654        };
  655        open_project_item
  656    }
  657
  658    fn build_item<T: project::ProjectItem>(
  659        &self,
  660        item: Entity<T>,
  661        project: Entity<Project>,
  662        pane: Option<&Pane>,
  663        window: &mut Window,
  664        cx: &mut App,
  665    ) -> Option<Box<dyn ItemHandle>> {
  666        let build = self
  667            .build_project_item_fns_by_type
  668            .get(&TypeId::of::<T>())?;
  669        Some(build(item.into_any(), project, pane, window, cx))
  670    }
  671}
  672
  673type WorkspaceItemBuilder =
  674    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  675
  676impl Global for ProjectItemRegistry {}
  677
  678/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  679/// items will get a chance to open the file, starting from the project item that
  680/// was added last.
  681pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  682    cx.default_global::<ProjectItemRegistry>().register::<I>();
  683}
  684
  685#[derive(Default)]
  686pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  687
  688struct FollowableViewDescriptor {
  689    from_state_proto: fn(
  690        Entity<Workspace>,
  691        ViewId,
  692        &mut Option<proto::view::Variant>,
  693        &mut Window,
  694        &mut App,
  695    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  696    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  697}
  698
  699impl Global for FollowableViewRegistry {}
  700
  701impl FollowableViewRegistry {
  702    pub fn register<I: FollowableItem>(cx: &mut App) {
  703        cx.default_global::<Self>().0.insert(
  704            TypeId::of::<I>(),
  705            FollowableViewDescriptor {
  706                from_state_proto: |workspace, id, state, window, cx| {
  707                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  708                        cx.foreground_executor()
  709                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  710                    })
  711                },
  712                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  713            },
  714        );
  715    }
  716
  717    pub fn from_state_proto(
  718        workspace: Entity<Workspace>,
  719        view_id: ViewId,
  720        mut state: Option<proto::view::Variant>,
  721        window: &mut Window,
  722        cx: &mut App,
  723    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  724        cx.update_default_global(|this: &mut Self, cx| {
  725            this.0.values().find_map(|descriptor| {
  726                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  727            })
  728        })
  729    }
  730
  731    pub fn to_followable_view(
  732        view: impl Into<AnyView>,
  733        cx: &App,
  734    ) -> Option<Box<dyn FollowableItemHandle>> {
  735        let this = cx.try_global::<Self>()?;
  736        let view = view.into();
  737        let descriptor = this.0.get(&view.entity_type())?;
  738        Some((descriptor.to_followable_view)(&view))
  739    }
  740}
  741
  742#[derive(Copy, Clone)]
  743struct SerializableItemDescriptor {
  744    deserialize: fn(
  745        Entity<Project>,
  746        WeakEntity<Workspace>,
  747        WorkspaceId,
  748        ItemId,
  749        &mut Window,
  750        &mut Context<Pane>,
  751    ) -> Task<Result<Box<dyn ItemHandle>>>,
  752    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  753    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  754}
  755
  756#[derive(Default)]
  757struct SerializableItemRegistry {
  758    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  759    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  760}
  761
  762impl Global for SerializableItemRegistry {}
  763
  764impl SerializableItemRegistry {
  765    fn deserialize(
  766        item_kind: &str,
  767        project: Entity<Project>,
  768        workspace: WeakEntity<Workspace>,
  769        workspace_id: WorkspaceId,
  770        item_item: ItemId,
  771        window: &mut Window,
  772        cx: &mut Context<Pane>,
  773    ) -> Task<Result<Box<dyn ItemHandle>>> {
  774        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  775            return Task::ready(Err(anyhow!(
  776                "cannot deserialize {}, descriptor not found",
  777                item_kind
  778            )));
  779        };
  780
  781        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  782    }
  783
  784    fn cleanup(
  785        item_kind: &str,
  786        workspace_id: WorkspaceId,
  787        loaded_items: Vec<ItemId>,
  788        window: &mut Window,
  789        cx: &mut App,
  790    ) -> Task<Result<()>> {
  791        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  792            return Task::ready(Err(anyhow!(
  793                "cannot cleanup {}, descriptor not found",
  794                item_kind
  795            )));
  796        };
  797
  798        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  799    }
  800
  801    fn view_to_serializable_item_handle(
  802        view: AnyView,
  803        cx: &App,
  804    ) -> Option<Box<dyn SerializableItemHandle>> {
  805        let this = cx.try_global::<Self>()?;
  806        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  807        Some((descriptor.view_to_serializable_item)(view))
  808    }
  809
  810    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  811        let this = cx.try_global::<Self>()?;
  812        this.descriptors_by_kind.get(item_kind).copied()
  813    }
  814}
  815
  816pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  817    let serialized_item_kind = I::serialized_item_kind();
  818
  819    let registry = cx.default_global::<SerializableItemRegistry>();
  820    let descriptor = SerializableItemDescriptor {
  821        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  822            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  823            cx.foreground_executor()
  824                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  825        },
  826        cleanup: |workspace_id, loaded_items, window, cx| {
  827            I::cleanup(workspace_id, loaded_items, window, cx)
  828        },
  829        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  830    };
  831    registry
  832        .descriptors_by_kind
  833        .insert(Arc::from(serialized_item_kind), descriptor);
  834    registry
  835        .descriptors_by_type
  836        .insert(TypeId::of::<I>(), descriptor);
  837}
  838
  839pub struct AppState {
  840    pub languages: Arc<LanguageRegistry>,
  841    pub client: Arc<Client>,
  842    pub user_store: Entity<UserStore>,
  843    pub cloud_user_store: Entity<CloudUserStore>,
  844    pub workspace_store: Entity<WorkspaceStore>,
  845    pub fs: Arc<dyn fs::Fs>,
  846    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  847    pub node_runtime: NodeRuntime,
  848    pub session: Entity<AppSession>,
  849}
  850
  851struct GlobalAppState(Weak<AppState>);
  852
  853impl Global for GlobalAppState {}
  854
  855pub struct WorkspaceStore {
  856    workspaces: HashSet<WindowHandle<Workspace>>,
  857    client: Arc<Client>,
  858    _subscriptions: Vec<client::Subscription>,
  859}
  860
  861#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  862pub enum CollaboratorId {
  863    PeerId(PeerId),
  864    Agent,
  865}
  866
  867impl From<PeerId> for CollaboratorId {
  868    fn from(peer_id: PeerId) -> Self {
  869        CollaboratorId::PeerId(peer_id)
  870    }
  871}
  872
  873impl From<&PeerId> for CollaboratorId {
  874    fn from(peer_id: &PeerId) -> Self {
  875        CollaboratorId::PeerId(*peer_id)
  876    }
  877}
  878
  879#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  880struct Follower {
  881    project_id: Option<u64>,
  882    peer_id: PeerId,
  883}
  884
  885impl AppState {
  886    #[track_caller]
  887    pub fn global(cx: &App) -> Weak<Self> {
  888        cx.global::<GlobalAppState>().0.clone()
  889    }
  890    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  891        cx.try_global::<GlobalAppState>()
  892            .map(|state| state.0.clone())
  893    }
  894    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  895        cx.set_global(GlobalAppState(state));
  896    }
  897
  898    #[cfg(any(test, feature = "test-support"))]
  899    pub fn test(cx: &mut App) -> Arc<Self> {
  900        use node_runtime::NodeRuntime;
  901        use session::Session;
  902        use settings::SettingsStore;
  903
  904        if !cx.has_global::<SettingsStore>() {
  905            let settings_store = SettingsStore::test(cx);
  906            cx.set_global(settings_store);
  907        }
  908
  909        let fs = fs::FakeFs::new(cx.background_executor().clone());
  910        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  911        let clock = Arc::new(clock::FakeSystemClock::new());
  912        let http_client = http_client::FakeHttpClient::with_404_response();
  913        let client = Client::new(clock, http_client.clone(), cx);
  914        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  915        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  916        let cloud_user_store = cx.new(|cx| CloudUserStore::new(client.cloud_client(), cx));
  917        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  918
  919        theme::init(theme::LoadThemes::JustBase, cx);
  920        client::init(&client, cx);
  921        crate::init_settings(cx);
  922
  923        Arc::new(Self {
  924            client,
  925            fs,
  926            languages,
  927            user_store,
  928            cloud_user_store,
  929            workspace_store,
  930            node_runtime: NodeRuntime::unavailable(),
  931            build_window_options: |_, _| Default::default(),
  932            session,
  933        })
  934    }
  935}
  936
  937struct DelayedDebouncedEditAction {
  938    task: Option<Task<()>>,
  939    cancel_channel: Option<oneshot::Sender<()>>,
  940}
  941
  942impl DelayedDebouncedEditAction {
  943    fn new() -> DelayedDebouncedEditAction {
  944        DelayedDebouncedEditAction {
  945            task: None,
  946            cancel_channel: None,
  947        }
  948    }
  949
  950    fn fire_new<F>(
  951        &mut self,
  952        delay: Duration,
  953        window: &mut Window,
  954        cx: &mut Context<Workspace>,
  955        func: F,
  956    ) where
  957        F: 'static
  958            + Send
  959            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  960    {
  961        if let Some(channel) = self.cancel_channel.take() {
  962            _ = channel.send(());
  963        }
  964
  965        let (sender, mut receiver) = oneshot::channel::<()>();
  966        self.cancel_channel = Some(sender);
  967
  968        let previous_task = self.task.take();
  969        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  970            let mut timer = cx.background_executor().timer(delay).fuse();
  971            if let Some(previous_task) = previous_task {
  972                previous_task.await;
  973            }
  974
  975            futures::select_biased! {
  976                _ = receiver => return,
  977                    _ = timer => {}
  978            }
  979
  980            if let Some(result) = workspace
  981                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
  982                .log_err()
  983            {
  984                result.await.log_err();
  985            }
  986        }));
  987    }
  988}
  989
  990pub enum Event {
  991    PaneAdded(Entity<Pane>),
  992    PaneRemoved,
  993    ItemAdded {
  994        item: Box<dyn ItemHandle>,
  995    },
  996    ItemRemoved,
  997    ActiveItemChanged,
  998    UserSavedItem {
  999        pane: WeakEntity<Pane>,
 1000        item: Box<dyn WeakItemHandle>,
 1001        save_intent: SaveIntent,
 1002    },
 1003    ContactRequestedJoin(u64),
 1004    WorkspaceCreated(WeakEntity<Workspace>),
 1005    OpenBundledFile {
 1006        text: Cow<'static, str>,
 1007        title: &'static str,
 1008        language: &'static str,
 1009    },
 1010    ZoomChanged,
 1011    ModalOpened,
 1012    ClearActivityIndicator,
 1013}
 1014
 1015#[derive(Debug)]
 1016pub enum OpenVisible {
 1017    All,
 1018    None,
 1019    OnlyFiles,
 1020    OnlyDirectories,
 1021}
 1022
 1023enum WorkspaceLocation {
 1024    // Valid local paths or SSH project to serialize
 1025    Location(SerializedWorkspaceLocation),
 1026    // No valid location found hence clear session id
 1027    DetachFromSession,
 1028    // No valid location found to serialize
 1029    None,
 1030}
 1031
 1032type PromptForNewPath = Box<
 1033    dyn Fn(
 1034        &mut Workspace,
 1035        DirectoryLister,
 1036        &mut Window,
 1037        &mut Context<Workspace>,
 1038    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1039>;
 1040
 1041type PromptForOpenPath = Box<
 1042    dyn Fn(
 1043        &mut Workspace,
 1044        DirectoryLister,
 1045        &mut Window,
 1046        &mut Context<Workspace>,
 1047    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1048>;
 1049
 1050#[derive(Default)]
 1051struct DispatchingKeystrokes {
 1052    dispatched: HashSet<Vec<Keystroke>>,
 1053    queue: VecDeque<Keystroke>,
 1054    task: Option<Shared<Task<()>>>,
 1055}
 1056
 1057/// Collects everything project-related for a certain window opened.
 1058/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1059///
 1060/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1061/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1062/// that can be used to register a global action to be triggered from any place in the window.
 1063pub struct Workspace {
 1064    weak_self: WeakEntity<Self>,
 1065    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1066    zoomed: Option<AnyWeakView>,
 1067    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1068    zoomed_position: Option<DockPosition>,
 1069    center: PaneGroup,
 1070    left_dock: Entity<Dock>,
 1071    bottom_dock: Entity<Dock>,
 1072    right_dock: Entity<Dock>,
 1073    panes: Vec<Entity<Pane>>,
 1074    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1075    active_pane: Entity<Pane>,
 1076    last_active_center_pane: Option<WeakEntity<Pane>>,
 1077    last_active_view_id: Option<proto::ViewId>,
 1078    status_bar: Entity<StatusBar>,
 1079    modal_layer: Entity<ModalLayer>,
 1080    toast_layer: Entity<ToastLayer>,
 1081    titlebar_item: Option<AnyView>,
 1082    notifications: Notifications,
 1083    suppressed_notifications: HashSet<NotificationId>,
 1084    project: Entity<Project>,
 1085    follower_states: HashMap<CollaboratorId, FollowerState>,
 1086    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1087    window_edited: bool,
 1088    dirty_items: HashMap<EntityId, Subscription>,
 1089    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1090    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1091    database_id: Option<WorkspaceId>,
 1092    app_state: Arc<AppState>,
 1093    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1094    _subscriptions: Vec<Subscription>,
 1095    _apply_leader_updates: Task<Result<()>>,
 1096    _observe_current_user: Task<Result<()>>,
 1097    _schedule_serialize: Option<Task<()>>,
 1098    pane_history_timestamp: Arc<AtomicUsize>,
 1099    bounds: Bounds<Pixels>,
 1100    pub centered_layout: bool,
 1101    bounds_save_task_queued: Option<Task<()>>,
 1102    on_prompt_for_new_path: Option<PromptForNewPath>,
 1103    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1104    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1105    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1106    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1107    serialized_ssh_project: Option<SerializedSshProject>,
 1108    _items_serializer: Task<Result<()>>,
 1109    session_id: Option<String>,
 1110    scheduled_tasks: Vec<Task<()>>,
 1111}
 1112
 1113impl EventEmitter<Event> for Workspace {}
 1114
 1115#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1116pub struct ViewId {
 1117    pub creator: CollaboratorId,
 1118    pub id: u64,
 1119}
 1120
 1121pub struct FollowerState {
 1122    center_pane: Entity<Pane>,
 1123    dock_pane: Option<Entity<Pane>>,
 1124    active_view_id: Option<ViewId>,
 1125    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1126}
 1127
 1128struct FollowerView {
 1129    view: Box<dyn FollowableItemHandle>,
 1130    location: Option<proto::PanelId>,
 1131}
 1132
 1133impl Workspace {
 1134    const DEFAULT_PADDING: f32 = 0.2;
 1135    const MAX_PADDING: f32 = 0.4;
 1136
 1137    pub fn new(
 1138        workspace_id: Option<WorkspaceId>,
 1139        project: Entity<Project>,
 1140        app_state: Arc<AppState>,
 1141        window: &mut Window,
 1142        cx: &mut Context<Self>,
 1143    ) -> Self {
 1144        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1145            match event {
 1146                project::Event::RemoteIdChanged(_) => {
 1147                    this.update_window_title(window, cx);
 1148                }
 1149
 1150                project::Event::CollaboratorLeft(peer_id) => {
 1151                    this.collaborator_left(*peer_id, window, cx);
 1152                }
 1153
 1154                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1155                    this.update_window_title(window, cx);
 1156                    this.serialize_workspace(window, cx);
 1157                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1158                    this.update_history(cx);
 1159                }
 1160
 1161                project::Event::DisconnectedFromHost => {
 1162                    this.update_window_edited(window, cx);
 1163                    let leaders_to_unfollow =
 1164                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1165                    for leader_id in leaders_to_unfollow {
 1166                        this.unfollow(leader_id, window, cx);
 1167                    }
 1168                }
 1169
 1170                project::Event::DisconnectedFromSshRemote => {
 1171                    this.update_window_edited(window, cx);
 1172                }
 1173
 1174                project::Event::Closed => {
 1175                    window.remove_window();
 1176                }
 1177
 1178                project::Event::DeletedEntry(_, entry_id) => {
 1179                    for pane in this.panes.iter() {
 1180                        pane.update(cx, |pane, cx| {
 1181                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1182                        });
 1183                    }
 1184                }
 1185
 1186                project::Event::Toast {
 1187                    notification_id,
 1188                    message,
 1189                } => this.show_notification(
 1190                    NotificationId::named(notification_id.clone()),
 1191                    cx,
 1192                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1193                ),
 1194
 1195                project::Event::HideToast { notification_id } => {
 1196                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1197                }
 1198
 1199                project::Event::LanguageServerPrompt(request) => {
 1200                    struct LanguageServerPrompt;
 1201
 1202                    let mut hasher = DefaultHasher::new();
 1203                    request.lsp_name.as_str().hash(&mut hasher);
 1204                    let id = hasher.finish();
 1205
 1206                    this.show_notification(
 1207                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1208                        cx,
 1209                        |cx| {
 1210                            cx.new(|cx| {
 1211                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1212                            })
 1213                        },
 1214                    );
 1215                }
 1216
 1217                project::Event::AgentLocationChanged => {
 1218                    this.handle_agent_location_changed(window, cx)
 1219                }
 1220
 1221                _ => {}
 1222            }
 1223            cx.notify()
 1224        })
 1225        .detach();
 1226
 1227        cx.subscribe_in(
 1228            &project.read(cx).breakpoint_store(),
 1229            window,
 1230            |workspace, _, event, window, cx| match event {
 1231                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1232                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1233                    workspace.serialize_workspace(window, cx);
 1234                }
 1235                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1236            },
 1237        )
 1238        .detach();
 1239
 1240        cx.on_focus_lost(window, |this, window, cx| {
 1241            let focus_handle = this.focus_handle(cx);
 1242            window.focus(&focus_handle);
 1243        })
 1244        .detach();
 1245
 1246        let weak_handle = cx.entity().downgrade();
 1247        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1248
 1249        let center_pane = cx.new(|cx| {
 1250            let mut center_pane = Pane::new(
 1251                weak_handle.clone(),
 1252                project.clone(),
 1253                pane_history_timestamp.clone(),
 1254                None,
 1255                NewFile.boxed_clone(),
 1256                window,
 1257                cx,
 1258            );
 1259            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1260            center_pane
 1261        });
 1262        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1263            .detach();
 1264
 1265        window.focus(&center_pane.focus_handle(cx));
 1266
 1267        cx.emit(Event::PaneAdded(center_pane.clone()));
 1268
 1269        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1270        app_state.workspace_store.update(cx, |store, _| {
 1271            store.workspaces.insert(window_handle);
 1272        });
 1273
 1274        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1275        let mut connection_status = app_state.client.status();
 1276        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1277            current_user.next().await;
 1278            connection_status.next().await;
 1279            let mut stream =
 1280                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1281
 1282            while stream.recv().await.is_some() {
 1283                this.update(cx, |_, cx| cx.notify())?;
 1284            }
 1285            anyhow::Ok(())
 1286        });
 1287
 1288        // All leader updates are enqueued and then processed in a single task, so
 1289        // that each asynchronous operation can be run in order.
 1290        let (leader_updates_tx, mut leader_updates_rx) =
 1291            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1292        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1293            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1294                Self::process_leader_update(&this, leader_id, update, cx)
 1295                    .await
 1296                    .log_err();
 1297            }
 1298
 1299            Ok(())
 1300        });
 1301
 1302        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1303        let modal_layer = cx.new(|_| ModalLayer::new());
 1304        let toast_layer = cx.new(|_| ToastLayer::new());
 1305        cx.subscribe(
 1306            &modal_layer,
 1307            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1308                cx.emit(Event::ModalOpened);
 1309            },
 1310        )
 1311        .detach();
 1312
 1313        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1314        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1315        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1316        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1317        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1318        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1319        let status_bar = cx.new(|cx| {
 1320            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1321            status_bar.add_left_item(left_dock_buttons, window, cx);
 1322            status_bar.add_right_item(right_dock_buttons, window, cx);
 1323            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1324            status_bar
 1325        });
 1326
 1327        let session_id = app_state.session.read(cx).id().to_owned();
 1328
 1329        let mut active_call = None;
 1330        if let Some(call) = ActiveCall::try_global(cx) {
 1331            let call = call.clone();
 1332            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1333            active_call = Some((call, subscriptions));
 1334        }
 1335
 1336        let (serializable_items_tx, serializable_items_rx) =
 1337            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1338        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1339            Self::serialize_items(&this, serializable_items_rx, cx).await
 1340        });
 1341
 1342        let subscriptions = vec![
 1343            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1344            cx.observe_window_bounds(window, move |this, window, cx| {
 1345                if this.bounds_save_task_queued.is_some() {
 1346                    return;
 1347                }
 1348                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1349                    cx.background_executor()
 1350                        .timer(Duration::from_millis(100))
 1351                        .await;
 1352                    this.update_in(cx, |this, window, cx| {
 1353                        if let Some(display) = window.display(cx) {
 1354                            if let Ok(display_uuid) = display.uuid() {
 1355                                let window_bounds = window.inner_window_bounds();
 1356                                if let Some(database_id) = workspace_id {
 1357                                    cx.background_executor()
 1358                                        .spawn(DB.set_window_open_status(
 1359                                            database_id,
 1360                                            SerializedWindowBounds(window_bounds),
 1361                                            display_uuid,
 1362                                        ))
 1363                                        .detach_and_log_err(cx);
 1364                                }
 1365                            }
 1366                        }
 1367                        this.bounds_save_task_queued.take();
 1368                    })
 1369                    .ok();
 1370                }));
 1371                cx.notify();
 1372            }),
 1373            cx.observe_window_appearance(window, |_, window, cx| {
 1374                let window_appearance = window.appearance();
 1375
 1376                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1377
 1378                ThemeSettings::reload_current_theme(cx);
 1379                ThemeSettings::reload_current_icon_theme(cx);
 1380            }),
 1381            cx.on_release(move |this, cx| {
 1382                this.app_state.workspace_store.update(cx, move |store, _| {
 1383                    store.workspaces.remove(&window_handle.clone());
 1384                })
 1385            }),
 1386        ];
 1387
 1388        cx.defer_in(window, |this, window, cx| {
 1389            this.update_window_title(window, cx);
 1390            this.show_initial_notifications(cx);
 1391        });
 1392        Workspace {
 1393            weak_self: weak_handle.clone(),
 1394            zoomed: None,
 1395            zoomed_position: None,
 1396            previous_dock_drag_coordinates: None,
 1397            center: PaneGroup::new(center_pane.clone()),
 1398            panes: vec![center_pane.clone()],
 1399            panes_by_item: Default::default(),
 1400            active_pane: center_pane.clone(),
 1401            last_active_center_pane: Some(center_pane.downgrade()),
 1402            last_active_view_id: None,
 1403            status_bar,
 1404            modal_layer,
 1405            toast_layer,
 1406            titlebar_item: None,
 1407            notifications: Notifications::default(),
 1408            suppressed_notifications: HashSet::default(),
 1409            left_dock,
 1410            bottom_dock,
 1411            right_dock,
 1412            project: project.clone(),
 1413            follower_states: Default::default(),
 1414            last_leaders_by_pane: Default::default(),
 1415            dispatching_keystrokes: Default::default(),
 1416            window_edited: false,
 1417            dirty_items: Default::default(),
 1418            active_call,
 1419            database_id: workspace_id,
 1420            app_state,
 1421            _observe_current_user,
 1422            _apply_leader_updates,
 1423            _schedule_serialize: None,
 1424            leader_updates_tx,
 1425            _subscriptions: subscriptions,
 1426            pane_history_timestamp,
 1427            workspace_actions: Default::default(),
 1428            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1429            bounds: Default::default(),
 1430            centered_layout: false,
 1431            bounds_save_task_queued: None,
 1432            on_prompt_for_new_path: None,
 1433            on_prompt_for_open_path: None,
 1434            terminal_provider: None,
 1435            debugger_provider: None,
 1436            serializable_items_tx,
 1437            _items_serializer,
 1438            session_id: Some(session_id),
 1439            serialized_ssh_project: None,
 1440            scheduled_tasks: Vec::new(),
 1441        }
 1442    }
 1443
 1444    pub fn new_local(
 1445        abs_paths: Vec<PathBuf>,
 1446        app_state: Arc<AppState>,
 1447        requesting_window: Option<WindowHandle<Workspace>>,
 1448        env: Option<HashMap<String, String>>,
 1449        cx: &mut App,
 1450    ) -> Task<
 1451        anyhow::Result<(
 1452            WindowHandle<Workspace>,
 1453            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1454        )>,
 1455    > {
 1456        let project_handle = Project::local(
 1457            app_state.client.clone(),
 1458            app_state.node_runtime.clone(),
 1459            app_state.user_store.clone(),
 1460            app_state.languages.clone(),
 1461            app_state.fs.clone(),
 1462            env,
 1463            cx,
 1464        );
 1465
 1466        cx.spawn(async move |cx| {
 1467            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1468            for path in abs_paths.into_iter() {
 1469                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1470                    paths_to_open.push(canonical)
 1471                } else {
 1472                    paths_to_open.push(path)
 1473                }
 1474            }
 1475
 1476            let serialized_workspace =
 1477                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1478
 1479            let workspace_location = serialized_workspace
 1480                .as_ref()
 1481                .map(|ws| &ws.location)
 1482                .and_then(|loc| match loc {
 1483                    SerializedWorkspaceLocation::Local(_, order) => {
 1484                        Some((loc.sorted_paths(), order.order()))
 1485                    }
 1486                    _ => None,
 1487                });
 1488
 1489            if let Some((paths, order)) = workspace_location {
 1490                paths_to_open = paths.iter().cloned().collect();
 1491
 1492                if order.iter().enumerate().any(|(i, &j)| i != j) {
 1493                    project_handle
 1494                        .update(cx, |project, cx| {
 1495                            project.set_worktrees_reordered(true, cx);
 1496                        })
 1497                        .log_err();
 1498                }
 1499            }
 1500
 1501            // Get project paths for all of the abs_paths
 1502            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1503                Vec::with_capacity(paths_to_open.len());
 1504
 1505            for path in paths_to_open.into_iter() {
 1506                if let Some((_, project_entry)) = cx
 1507                    .update(|cx| {
 1508                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1509                    })?
 1510                    .await
 1511                    .log_err()
 1512                {
 1513                    project_paths.push((path, Some(project_entry)));
 1514                } else {
 1515                    project_paths.push((path, None));
 1516                }
 1517            }
 1518
 1519            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1520                serialized_workspace.id
 1521            } else {
 1522                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1523            };
 1524
 1525            let toolchains = DB.toolchains(workspace_id).await?;
 1526
 1527            for (toolchain, worktree_id, path) in toolchains {
 1528                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1529                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1530                    continue;
 1531                }
 1532
 1533                project_handle
 1534                    .update(cx, |this, cx| {
 1535                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1536                    })?
 1537                    .await;
 1538            }
 1539            let window = if let Some(window) = requesting_window {
 1540                let centered_layout = serialized_workspace
 1541                    .as_ref()
 1542                    .map(|w| w.centered_layout)
 1543                    .unwrap_or(false);
 1544
 1545                cx.update_window(window.into(), |_, window, cx| {
 1546                    window.replace_root(cx, |window, cx| {
 1547                        let mut workspace = Workspace::new(
 1548                            Some(workspace_id),
 1549                            project_handle.clone(),
 1550                            app_state.clone(),
 1551                            window,
 1552                            cx,
 1553                        );
 1554
 1555                        workspace.centered_layout = centered_layout;
 1556                        workspace
 1557                    });
 1558                })?;
 1559                window
 1560            } else {
 1561                let window_bounds_override = window_bounds_env_override();
 1562
 1563                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1564                    (Some(WindowBounds::Windowed(bounds)), None)
 1565                } else {
 1566                    let restorable_bounds = serialized_workspace
 1567                        .as_ref()
 1568                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1569                        .or_else(|| {
 1570                            let (display, window_bounds) = DB.last_window().log_err()?;
 1571                            Some((display?, window_bounds?))
 1572                        });
 1573
 1574                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1575                        (Some(serialized_status.0), Some(serialized_display))
 1576                    } else {
 1577                        (None, None)
 1578                    }
 1579                };
 1580
 1581                // Use the serialized workspace to construct the new window
 1582                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1583                options.window_bounds = window_bounds;
 1584                let centered_layout = serialized_workspace
 1585                    .as_ref()
 1586                    .map(|w| w.centered_layout)
 1587                    .unwrap_or(false);
 1588                cx.open_window(options, {
 1589                    let app_state = app_state.clone();
 1590                    let project_handle = project_handle.clone();
 1591                    move |window, cx| {
 1592                        cx.new(|cx| {
 1593                            let mut workspace = Workspace::new(
 1594                                Some(workspace_id),
 1595                                project_handle,
 1596                                app_state,
 1597                                window,
 1598                                cx,
 1599                            );
 1600                            workspace.centered_layout = centered_layout;
 1601                            workspace
 1602                        })
 1603                    }
 1604                })?
 1605            };
 1606
 1607            notify_if_database_failed(window, cx);
 1608            let opened_items = window
 1609                .update(cx, |_workspace, window, cx| {
 1610                    open_items(serialized_workspace, project_paths, window, cx)
 1611                })?
 1612                .await
 1613                .unwrap_or_default();
 1614
 1615            window
 1616                .update(cx, |workspace, window, cx| {
 1617                    window.activate_window();
 1618                    workspace.update_history(cx);
 1619                })
 1620                .log_err();
 1621            Ok((window, opened_items))
 1622        })
 1623    }
 1624
 1625    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1626        self.weak_self.clone()
 1627    }
 1628
 1629    pub fn left_dock(&self) -> &Entity<Dock> {
 1630        &self.left_dock
 1631    }
 1632
 1633    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1634        &self.bottom_dock
 1635    }
 1636
 1637    pub fn set_bottom_dock_layout(
 1638        &mut self,
 1639        layout: BottomDockLayout,
 1640        window: &mut Window,
 1641        cx: &mut Context<Self>,
 1642    ) {
 1643        let fs = self.project().read(cx).fs();
 1644        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1645            content.bottom_dock_layout = Some(layout);
 1646        });
 1647
 1648        cx.notify();
 1649        self.serialize_workspace(window, cx);
 1650    }
 1651
 1652    pub fn right_dock(&self) -> &Entity<Dock> {
 1653        &self.right_dock
 1654    }
 1655
 1656    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1657        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1658    }
 1659
 1660    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1661        match position {
 1662            DockPosition::Left => &self.left_dock,
 1663            DockPosition::Bottom => &self.bottom_dock,
 1664            DockPosition::Right => &self.right_dock,
 1665        }
 1666    }
 1667
 1668    pub fn is_edited(&self) -> bool {
 1669        self.window_edited
 1670    }
 1671
 1672    pub fn add_panel<T: Panel>(
 1673        &mut self,
 1674        panel: Entity<T>,
 1675        window: &mut Window,
 1676        cx: &mut Context<Self>,
 1677    ) {
 1678        let focus_handle = panel.panel_focus_handle(cx);
 1679        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1680            .detach();
 1681
 1682        let dock_position = panel.position(window, cx);
 1683        let dock = self.dock_at_position(dock_position);
 1684
 1685        dock.update(cx, |dock, cx| {
 1686            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1687        });
 1688    }
 1689
 1690    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1691        &self.status_bar
 1692    }
 1693
 1694    pub fn app_state(&self) -> &Arc<AppState> {
 1695        &self.app_state
 1696    }
 1697
 1698    pub fn user_store(&self) -> &Entity<UserStore> {
 1699        &self.app_state.user_store
 1700    }
 1701
 1702    pub fn project(&self) -> &Entity<Project> {
 1703        &self.project
 1704    }
 1705
 1706    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1707        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1708
 1709        for pane_handle in &self.panes {
 1710            let pane = pane_handle.read(cx);
 1711
 1712            for entry in pane.activation_history() {
 1713                history.insert(
 1714                    entry.entity_id,
 1715                    history
 1716                        .get(&entry.entity_id)
 1717                        .cloned()
 1718                        .unwrap_or(0)
 1719                        .max(entry.timestamp),
 1720                );
 1721            }
 1722        }
 1723
 1724        history
 1725    }
 1726
 1727    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1728        let mut recent_item: Option<Entity<T>> = None;
 1729        let mut recent_timestamp = 0;
 1730        for pane_handle in &self.panes {
 1731            let pane = pane_handle.read(cx);
 1732            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1733                pane.items().map(|item| (item.item_id(), item)).collect();
 1734            for entry in pane.activation_history() {
 1735                if entry.timestamp > recent_timestamp {
 1736                    if let Some(&item) = item_map.get(&entry.entity_id) {
 1737                        if let Some(typed_item) = item.act_as::<T>(cx) {
 1738                            recent_timestamp = entry.timestamp;
 1739                            recent_item = Some(typed_item);
 1740                        }
 1741                    }
 1742                }
 1743            }
 1744        }
 1745        recent_item
 1746    }
 1747
 1748    pub fn recent_navigation_history_iter(
 1749        &self,
 1750        cx: &App,
 1751    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1752        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1753        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1754
 1755        for pane in &self.panes {
 1756            let pane = pane.read(cx);
 1757
 1758            pane.nav_history()
 1759                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1760                    if let Some(fs_path) = &fs_path {
 1761                        abs_paths_opened
 1762                            .entry(fs_path.clone())
 1763                            .or_default()
 1764                            .insert(project_path.clone());
 1765                    }
 1766                    let timestamp = entry.timestamp;
 1767                    match history.entry(project_path) {
 1768                        hash_map::Entry::Occupied(mut entry) => {
 1769                            let (_, old_timestamp) = entry.get();
 1770                            if &timestamp > old_timestamp {
 1771                                entry.insert((fs_path, timestamp));
 1772                            }
 1773                        }
 1774                        hash_map::Entry::Vacant(entry) => {
 1775                            entry.insert((fs_path, timestamp));
 1776                        }
 1777                    }
 1778                });
 1779
 1780            if let Some(item) = pane.active_item() {
 1781                if let Some(project_path) = item.project_path(cx) {
 1782                    let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1783
 1784                    if let Some(fs_path) = &fs_path {
 1785                        abs_paths_opened
 1786                            .entry(fs_path.clone())
 1787                            .or_default()
 1788                            .insert(project_path.clone());
 1789                    }
 1790
 1791                    history.insert(project_path, (fs_path, std::usize::MAX));
 1792                }
 1793            }
 1794        }
 1795
 1796        history
 1797            .into_iter()
 1798            .sorted_by_key(|(_, (_, order))| *order)
 1799            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1800            .rev()
 1801            .filter(move |(history_path, abs_path)| {
 1802                let latest_project_path_opened = abs_path
 1803                    .as_ref()
 1804                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1805                    .and_then(|project_paths| {
 1806                        project_paths
 1807                            .iter()
 1808                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1809                    });
 1810
 1811                match latest_project_path_opened {
 1812                    Some(latest_project_path_opened) => latest_project_path_opened == history_path,
 1813                    None => true,
 1814                }
 1815            })
 1816    }
 1817
 1818    pub fn recent_navigation_history(
 1819        &self,
 1820        limit: Option<usize>,
 1821        cx: &App,
 1822    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1823        self.recent_navigation_history_iter(cx)
 1824            .take(limit.unwrap_or(usize::MAX))
 1825            .collect()
 1826    }
 1827
 1828    fn navigate_history(
 1829        &mut self,
 1830        pane: WeakEntity<Pane>,
 1831        mode: NavigationMode,
 1832        window: &mut Window,
 1833        cx: &mut Context<Workspace>,
 1834    ) -> Task<Result<()>> {
 1835        let to_load = if let Some(pane) = pane.upgrade() {
 1836            pane.update(cx, |pane, cx| {
 1837                window.focus(&pane.focus_handle(cx));
 1838                loop {
 1839                    // Retrieve the weak item handle from the history.
 1840                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1841
 1842                    // If the item is still present in this pane, then activate it.
 1843                    if let Some(index) = entry
 1844                        .item
 1845                        .upgrade()
 1846                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1847                    {
 1848                        let prev_active_item_index = pane.active_item_index();
 1849                        pane.nav_history_mut().set_mode(mode);
 1850                        pane.activate_item(index, true, true, window, cx);
 1851                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1852
 1853                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1854                        if let Some(data) = entry.data {
 1855                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1856                        }
 1857
 1858                        if navigated {
 1859                            break None;
 1860                        }
 1861                    } else {
 1862                        // If the item is no longer present in this pane, then retrieve its
 1863                        // path info in order to reopen it.
 1864                        break pane
 1865                            .nav_history()
 1866                            .path_for_item(entry.item.id())
 1867                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1868                    }
 1869                }
 1870            })
 1871        } else {
 1872            None
 1873        };
 1874
 1875        if let Some((project_path, abs_path, entry)) = to_load {
 1876            // If the item was no longer present, then load it again from its previous path, first try the local path
 1877            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1878
 1879            cx.spawn_in(window, async move  |workspace, cx| {
 1880                let open_by_project_path = open_by_project_path.await;
 1881                let mut navigated = false;
 1882                match open_by_project_path
 1883                    .with_context(|| format!("Navigating to {project_path:?}"))
 1884                {
 1885                    Ok((project_entry_id, build_item)) => {
 1886                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1887                            pane.nav_history_mut().set_mode(mode);
 1888                            pane.active_item().map(|p| p.item_id())
 1889                        })?;
 1890
 1891                        pane.update_in(cx, |pane, window, cx| {
 1892                            let item = pane.open_item(
 1893                                project_entry_id,
 1894                                project_path,
 1895                                true,
 1896                                entry.is_preview,
 1897                                true,
 1898                                None,
 1899                                window, cx,
 1900                                build_item,
 1901                            );
 1902                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1903                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1904                            if let Some(data) = entry.data {
 1905                                navigated |= item.navigate(data, window, cx);
 1906                            }
 1907                        })?;
 1908                    }
 1909                    Err(open_by_project_path_e) => {
 1910                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1911                        // and its worktree is now dropped
 1912                        if let Some(abs_path) = abs_path {
 1913                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1914                                pane.nav_history_mut().set_mode(mode);
 1915                                pane.active_item().map(|p| p.item_id())
 1916                            })?;
 1917                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1918                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1919                            })?;
 1920                            match open_by_abs_path
 1921                                .await
 1922                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1923                            {
 1924                                Ok(item) => {
 1925                                    pane.update_in(cx, |pane, window, cx| {
 1926                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1927                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1928                                        if let Some(data) = entry.data {
 1929                                            navigated |= item.navigate(data, window, cx);
 1930                                        }
 1931                                    })?;
 1932                                }
 1933                                Err(open_by_abs_path_e) => {
 1934                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1935                                }
 1936                            }
 1937                        }
 1938                    }
 1939                }
 1940
 1941                if !navigated {
 1942                    workspace
 1943                        .update_in(cx, |workspace, window, cx| {
 1944                            Self::navigate_history(workspace, pane, mode, window, cx)
 1945                        })?
 1946                        .await?;
 1947                }
 1948
 1949                Ok(())
 1950            })
 1951        } else {
 1952            Task::ready(Ok(()))
 1953        }
 1954    }
 1955
 1956    pub fn go_back(
 1957        &mut self,
 1958        pane: WeakEntity<Pane>,
 1959        window: &mut Window,
 1960        cx: &mut Context<Workspace>,
 1961    ) -> Task<Result<()>> {
 1962        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1963    }
 1964
 1965    pub fn go_forward(
 1966        &mut self,
 1967        pane: WeakEntity<Pane>,
 1968        window: &mut Window,
 1969        cx: &mut Context<Workspace>,
 1970    ) -> Task<Result<()>> {
 1971        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1972    }
 1973
 1974    pub fn reopen_closed_item(
 1975        &mut self,
 1976        window: &mut Window,
 1977        cx: &mut Context<Workspace>,
 1978    ) -> Task<Result<()>> {
 1979        self.navigate_history(
 1980            self.active_pane().downgrade(),
 1981            NavigationMode::ReopeningClosedItem,
 1982            window,
 1983            cx,
 1984        )
 1985    }
 1986
 1987    pub fn client(&self) -> &Arc<Client> {
 1988        &self.app_state.client
 1989    }
 1990
 1991    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 1992        self.titlebar_item = Some(item);
 1993        cx.notify();
 1994    }
 1995
 1996    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 1997        self.on_prompt_for_new_path = Some(prompt)
 1998    }
 1999
 2000    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2001        self.on_prompt_for_open_path = Some(prompt)
 2002    }
 2003
 2004    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2005        self.terminal_provider = Some(Box::new(provider));
 2006    }
 2007
 2008    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2009        self.debugger_provider = Some(Arc::new(provider));
 2010    }
 2011
 2012    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2013        self.debugger_provider.clone()
 2014    }
 2015
 2016    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
 2017        self.serialized_ssh_project.clone()
 2018    }
 2019
 2020    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
 2021        self.serialized_ssh_project = Some(serialized_ssh_project);
 2022    }
 2023
 2024    pub fn prompt_for_open_path(
 2025        &mut self,
 2026        path_prompt_options: PathPromptOptions,
 2027        lister: DirectoryLister,
 2028        window: &mut Window,
 2029        cx: &mut Context<Self>,
 2030    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2031        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2032            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2033            let rx = prompt(self, lister, window, cx);
 2034            self.on_prompt_for_open_path = Some(prompt);
 2035            rx
 2036        } else {
 2037            let (tx, rx) = oneshot::channel();
 2038            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2039
 2040            cx.spawn_in(window, async move |workspace, cx| {
 2041                let Ok(result) = abs_path.await else {
 2042                    return Ok(());
 2043                };
 2044
 2045                match result {
 2046                    Ok(result) => {
 2047                        tx.send(result).ok();
 2048                    }
 2049                    Err(err) => {
 2050                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2051                            workspace.show_portal_error(err.to_string(), cx);
 2052                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2053                            let rx = prompt(workspace, lister, window, cx);
 2054                            workspace.on_prompt_for_open_path = Some(prompt);
 2055                            rx
 2056                        })?;
 2057                        if let Ok(path) = rx.await {
 2058                            tx.send(path).ok();
 2059                        }
 2060                    }
 2061                };
 2062                anyhow::Ok(())
 2063            })
 2064            .detach();
 2065
 2066            rx
 2067        }
 2068    }
 2069
 2070    pub fn prompt_for_new_path(
 2071        &mut self,
 2072        lister: DirectoryLister,
 2073        window: &mut Window,
 2074        cx: &mut Context<Self>,
 2075    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2076        if self.project.read(cx).is_via_collab()
 2077            || self.project.read(cx).is_via_ssh()
 2078            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2079        {
 2080            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2081            let rx = prompt(self, lister, window, cx);
 2082            self.on_prompt_for_new_path = Some(prompt);
 2083            return rx;
 2084        }
 2085
 2086        let (tx, rx) = oneshot::channel();
 2087        cx.spawn_in(window, async move |workspace, cx| {
 2088            let abs_path = workspace.update(cx, |workspace, cx| {
 2089                let relative_to = workspace
 2090                    .most_recent_active_path(cx)
 2091                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2092                    .or_else(|| {
 2093                        let project = workspace.project.read(cx);
 2094                        project.visible_worktrees(cx).find_map(|worktree| {
 2095                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2096                        })
 2097                    })
 2098                    .or_else(std::env::home_dir)
 2099                    .unwrap_or_else(|| PathBuf::from(""));
 2100                cx.prompt_for_new_path(&relative_to)
 2101            })?;
 2102            let abs_path = match abs_path.await? {
 2103                Ok(path) => path,
 2104                Err(err) => {
 2105                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2106                        workspace.show_portal_error(err.to_string(), cx);
 2107
 2108                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2109                        let rx = prompt(workspace, lister, window, cx);
 2110                        workspace.on_prompt_for_new_path = Some(prompt);
 2111                        rx
 2112                    })?;
 2113                    if let Ok(path) = rx.await {
 2114                        tx.send(path).ok();
 2115                    }
 2116                    return anyhow::Ok(());
 2117                }
 2118            };
 2119
 2120            tx.send(abs_path.map(|path| vec![path])).ok();
 2121            anyhow::Ok(())
 2122        })
 2123        .detach();
 2124
 2125        rx
 2126    }
 2127
 2128    pub fn titlebar_item(&self) -> Option<AnyView> {
 2129        self.titlebar_item.clone()
 2130    }
 2131
 2132    /// Call the given callback with a workspace whose project is local.
 2133    ///
 2134    /// If the given workspace has a local project, then it will be passed
 2135    /// to the callback. Otherwise, a new empty window will be created.
 2136    pub fn with_local_workspace<T, F>(
 2137        &mut self,
 2138        window: &mut Window,
 2139        cx: &mut Context<Self>,
 2140        callback: F,
 2141    ) -> Task<Result<T>>
 2142    where
 2143        T: 'static,
 2144        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2145    {
 2146        if self.project.read(cx).is_local() {
 2147            Task::ready(Ok(callback(self, window, cx)))
 2148        } else {
 2149            let env = self.project.read(cx).cli_environment(cx);
 2150            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2151            cx.spawn_in(window, async move |_vh, cx| {
 2152                let (workspace, _) = task.await?;
 2153                workspace.update(cx, callback)
 2154            })
 2155        }
 2156    }
 2157
 2158    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2159        self.project.read(cx).worktrees(cx)
 2160    }
 2161
 2162    pub fn visible_worktrees<'a>(
 2163        &self,
 2164        cx: &'a App,
 2165    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2166        self.project.read(cx).visible_worktrees(cx)
 2167    }
 2168
 2169    #[cfg(any(test, feature = "test-support"))]
 2170    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2171        let futures = self
 2172            .worktrees(cx)
 2173            .filter_map(|worktree| worktree.read(cx).as_local())
 2174            .map(|worktree| worktree.scan_complete())
 2175            .collect::<Vec<_>>();
 2176        async move {
 2177            for future in futures {
 2178                future.await;
 2179            }
 2180        }
 2181    }
 2182
 2183    pub fn close_global(_: &CloseWindow, cx: &mut App) {
 2184        cx.defer(|cx| {
 2185            cx.windows().iter().find(|window| {
 2186                window
 2187                    .update(cx, |_, window, _| {
 2188                        if window.is_window_active() {
 2189                            //This can only get called when the window's project connection has been lost
 2190                            //so we don't need to prompt the user for anything and instead just close the window
 2191                            window.remove_window();
 2192                            true
 2193                        } else {
 2194                            false
 2195                        }
 2196                    })
 2197                    .unwrap_or(false)
 2198            });
 2199        });
 2200    }
 2201
 2202    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2203        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2204        cx.spawn_in(window, async move |_, cx| {
 2205            if prepare.await? {
 2206                cx.update(|window, _cx| window.remove_window())?;
 2207            }
 2208            anyhow::Ok(())
 2209        })
 2210        .detach_and_log_err(cx)
 2211    }
 2212
 2213    pub fn move_focused_panel_to_next_position(
 2214        &mut self,
 2215        _: &MoveFocusedPanelToNextPosition,
 2216        window: &mut Window,
 2217        cx: &mut Context<Self>,
 2218    ) {
 2219        let docks = self.all_docks();
 2220        let active_dock = docks
 2221            .into_iter()
 2222            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2223
 2224        if let Some(dock) = active_dock {
 2225            dock.update(cx, |dock, cx| {
 2226                let active_panel = dock
 2227                    .active_panel()
 2228                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2229
 2230                if let Some(panel) = active_panel {
 2231                    panel.move_to_next_position(window, cx);
 2232                }
 2233            })
 2234        }
 2235    }
 2236
 2237    pub fn prepare_to_close(
 2238        &mut self,
 2239        close_intent: CloseIntent,
 2240        window: &mut Window,
 2241        cx: &mut Context<Self>,
 2242    ) -> Task<Result<bool>> {
 2243        let active_call = self.active_call().cloned();
 2244
 2245        // On Linux and Windows, closing the last window should restore the last workspace.
 2246        let save_last_workspace = cfg!(not(target_os = "macos"))
 2247            && close_intent != CloseIntent::ReplaceWindow
 2248            && cx.windows().len() == 1;
 2249
 2250        cx.spawn_in(window, async move |this, cx| {
 2251            let workspace_count = cx.update(|_window, cx| {
 2252                cx.windows()
 2253                    .iter()
 2254                    .filter(|window| window.downcast::<Workspace>().is_some())
 2255                    .count()
 2256            })?;
 2257
 2258            if let Some(active_call) = active_call {
 2259                if close_intent != CloseIntent::Quit
 2260                    && workspace_count == 1
 2261                    && active_call.read_with(cx, |call, _| call.room().is_some())?
 2262                {
 2263                    let answer = cx.update(|window, cx| {
 2264                        window.prompt(
 2265                            PromptLevel::Warning,
 2266                            "Do you want to leave the current call?",
 2267                            None,
 2268                            &["Close window and hang up", "Cancel"],
 2269                            cx,
 2270                        )
 2271                    })?;
 2272
 2273                    if answer.await.log_err() == Some(1) {
 2274                        return anyhow::Ok(false);
 2275                    } else {
 2276                        active_call
 2277                            .update(cx, |call, cx| call.hang_up(cx))?
 2278                            .await
 2279                            .log_err();
 2280                    }
 2281                }
 2282            }
 2283
 2284            let save_result = this
 2285                .update_in(cx, |this, window, cx| {
 2286                    this.save_all_internal(SaveIntent::Close, window, cx)
 2287                })?
 2288                .await;
 2289
 2290            // If we're not quitting, but closing, we remove the workspace from
 2291            // the current session.
 2292            if close_intent != CloseIntent::Quit
 2293                && !save_last_workspace
 2294                && save_result.as_ref().map_or(false, |&res| res)
 2295            {
 2296                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2297                    .await;
 2298            }
 2299
 2300            save_result
 2301        })
 2302    }
 2303
 2304    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2305        self.save_all_internal(
 2306            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2307            window,
 2308            cx,
 2309        )
 2310        .detach_and_log_err(cx);
 2311    }
 2312
 2313    fn send_keystrokes(
 2314        &mut self,
 2315        action: &SendKeystrokes,
 2316        window: &mut Window,
 2317        cx: &mut Context<Self>,
 2318    ) {
 2319        let keystrokes: Vec<Keystroke> = action
 2320            .0
 2321            .split(' ')
 2322            .flat_map(|k| Keystroke::parse(k).log_err())
 2323            .collect();
 2324        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2325    }
 2326
 2327    pub fn send_keystrokes_impl(
 2328        &mut self,
 2329        keystrokes: Vec<Keystroke>,
 2330        window: &mut Window,
 2331        cx: &mut Context<Self>,
 2332    ) -> Shared<Task<()>> {
 2333        let mut state = self.dispatching_keystrokes.borrow_mut();
 2334        if !state.dispatched.insert(keystrokes.clone()) {
 2335            cx.propagate();
 2336            return state.task.clone().unwrap();
 2337        }
 2338
 2339        state.queue.extend(keystrokes);
 2340
 2341        let keystrokes = self.dispatching_keystrokes.clone();
 2342        if state.task.is_none() {
 2343            state.task = Some(
 2344                window
 2345                    .spawn(cx, async move |cx| {
 2346                        // limit to 100 keystrokes to avoid infinite recursion.
 2347                        for _ in 0..100 {
 2348                            let mut state = keystrokes.borrow_mut();
 2349                            let Some(keystroke) = state.queue.pop_front() else {
 2350                                state.dispatched.clear();
 2351                                state.task.take();
 2352                                return;
 2353                            };
 2354                            drop(state);
 2355                            cx.update(|window, cx| {
 2356                                let focused = window.focused(cx);
 2357                                window.dispatch_keystroke(keystroke.clone(), cx);
 2358                                if window.focused(cx) != focused {
 2359                                    // dispatch_keystroke may cause the focus to change.
 2360                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2361                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2362                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2363                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2364                                    // )
 2365                                    window.draw(cx).clear();
 2366                                }
 2367                            })
 2368                            .ok();
 2369                        }
 2370
 2371                        *keystrokes.borrow_mut() = Default::default();
 2372                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2373                    })
 2374                    .shared(),
 2375            );
 2376        }
 2377        state.task.clone().unwrap()
 2378    }
 2379
 2380    fn save_all_internal(
 2381        &mut self,
 2382        mut save_intent: SaveIntent,
 2383        window: &mut Window,
 2384        cx: &mut Context<Self>,
 2385    ) -> Task<Result<bool>> {
 2386        if self.project.read(cx).is_disconnected(cx) {
 2387            return Task::ready(Ok(true));
 2388        }
 2389        let dirty_items = self
 2390            .panes
 2391            .iter()
 2392            .flat_map(|pane| {
 2393                pane.read(cx).items().filter_map(|item| {
 2394                    if item.is_dirty(cx) {
 2395                        item.tab_content_text(0, cx);
 2396                        Some((pane.downgrade(), item.boxed_clone()))
 2397                    } else {
 2398                        None
 2399                    }
 2400                })
 2401            })
 2402            .collect::<Vec<_>>();
 2403
 2404        let project = self.project.clone();
 2405        cx.spawn_in(window, async move |workspace, cx| {
 2406            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2407                let (serialize_tasks, remaining_dirty_items) =
 2408                    workspace.update_in(cx, |workspace, window, cx| {
 2409                        let mut remaining_dirty_items = Vec::new();
 2410                        let mut serialize_tasks = Vec::new();
 2411                        for (pane, item) in dirty_items {
 2412                            if let Some(task) = item
 2413                                .to_serializable_item_handle(cx)
 2414                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2415                            {
 2416                                serialize_tasks.push(task);
 2417                            } else {
 2418                                remaining_dirty_items.push((pane, item));
 2419                            }
 2420                        }
 2421                        (serialize_tasks, remaining_dirty_items)
 2422                    })?;
 2423
 2424                futures::future::try_join_all(serialize_tasks).await?;
 2425
 2426                if remaining_dirty_items.len() > 1 {
 2427                    let answer = workspace.update_in(cx, |_, window, cx| {
 2428                        let detail = Pane::file_names_for_prompt(
 2429                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2430                            cx,
 2431                        );
 2432                        window.prompt(
 2433                            PromptLevel::Warning,
 2434                            &"Do you want to save all changes in the following files?",
 2435                            Some(&detail),
 2436                            &["Save all", "Discard all", "Cancel"],
 2437                            cx,
 2438                        )
 2439                    })?;
 2440                    match answer.await.log_err() {
 2441                        Some(0) => save_intent = SaveIntent::SaveAll,
 2442                        Some(1) => save_intent = SaveIntent::Skip,
 2443                        Some(2) => return Ok(false),
 2444                        _ => {}
 2445                    }
 2446                }
 2447
 2448                remaining_dirty_items
 2449            } else {
 2450                dirty_items
 2451            };
 2452
 2453            for (pane, item) in dirty_items {
 2454                let (singleton, project_entry_ids) =
 2455                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2456                if singleton || !project_entry_ids.is_empty() {
 2457                    if !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await? {
 2458                        return Ok(false);
 2459                    }
 2460                }
 2461            }
 2462            Ok(true)
 2463        })
 2464    }
 2465
 2466    pub fn open_workspace_for_paths(
 2467        &mut self,
 2468        replace_current_window: bool,
 2469        paths: Vec<PathBuf>,
 2470        window: &mut Window,
 2471        cx: &mut Context<Self>,
 2472    ) -> Task<Result<()>> {
 2473        let window_handle = window.window_handle().downcast::<Self>();
 2474        let is_remote = self.project.read(cx).is_via_collab();
 2475        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2476        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2477
 2478        let window_to_replace = if replace_current_window {
 2479            window_handle
 2480        } else if is_remote || has_worktree || has_dirty_items {
 2481            None
 2482        } else {
 2483            window_handle
 2484        };
 2485        let app_state = self.app_state.clone();
 2486
 2487        cx.spawn(async move |_, cx| {
 2488            cx.update(|cx| {
 2489                open_paths(
 2490                    &paths,
 2491                    app_state,
 2492                    OpenOptions {
 2493                        replace_window: window_to_replace,
 2494                        ..Default::default()
 2495                    },
 2496                    cx,
 2497                )
 2498            })?
 2499            .await?;
 2500            Ok(())
 2501        })
 2502    }
 2503
 2504    #[allow(clippy::type_complexity)]
 2505    pub fn open_paths(
 2506        &mut self,
 2507        mut abs_paths: Vec<PathBuf>,
 2508        options: OpenOptions,
 2509        pane: Option<WeakEntity<Pane>>,
 2510        window: &mut Window,
 2511        cx: &mut Context<Self>,
 2512    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2513        log::info!("open paths {abs_paths:?}");
 2514
 2515        let fs = self.app_state.fs.clone();
 2516
 2517        // Sort the paths to ensure we add worktrees for parents before their children.
 2518        abs_paths.sort_unstable();
 2519        cx.spawn_in(window, async move |this, cx| {
 2520            let mut tasks = Vec::with_capacity(abs_paths.len());
 2521
 2522            for abs_path in &abs_paths {
 2523                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2524                    OpenVisible::All => Some(true),
 2525                    OpenVisible::None => Some(false),
 2526                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2527                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2528                        Some(None) => Some(true),
 2529                        None => None,
 2530                    },
 2531                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2532                        Some(Some(metadata)) => Some(metadata.is_dir),
 2533                        Some(None) => Some(false),
 2534                        None => None,
 2535                    },
 2536                };
 2537                let project_path = match visible {
 2538                    Some(visible) => match this
 2539                        .update(cx, |this, cx| {
 2540                            Workspace::project_path_for_path(
 2541                                this.project.clone(),
 2542                                abs_path,
 2543                                visible,
 2544                                cx,
 2545                            )
 2546                        })
 2547                        .log_err()
 2548                    {
 2549                        Some(project_path) => project_path.await.log_err(),
 2550                        None => None,
 2551                    },
 2552                    None => None,
 2553                };
 2554
 2555                let this = this.clone();
 2556                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2557                let fs = fs.clone();
 2558                let pane = pane.clone();
 2559                let task = cx.spawn(async move |cx| {
 2560                    let (worktree, project_path) = project_path?;
 2561                    if fs.is_dir(&abs_path).await {
 2562                        this.update(cx, |workspace, cx| {
 2563                            let worktree = worktree.read(cx);
 2564                            let worktree_abs_path = worktree.abs_path();
 2565                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2566                                worktree.root_entry()
 2567                            } else {
 2568                                abs_path
 2569                                    .strip_prefix(worktree_abs_path.as_ref())
 2570                                    .ok()
 2571                                    .and_then(|relative_path| {
 2572                                        worktree.entry_for_path(relative_path)
 2573                                    })
 2574                            }
 2575                            .map(|entry| entry.id);
 2576                            if let Some(entry_id) = entry_id {
 2577                                workspace.project.update(cx, |_, cx| {
 2578                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2579                                })
 2580                            }
 2581                        })
 2582                        .ok()?;
 2583                        None
 2584                    } else {
 2585                        Some(
 2586                            this.update_in(cx, |this, window, cx| {
 2587                                this.open_path(
 2588                                    project_path,
 2589                                    pane,
 2590                                    options.focus.unwrap_or(true),
 2591                                    window,
 2592                                    cx,
 2593                                )
 2594                            })
 2595                            .ok()?
 2596                            .await,
 2597                        )
 2598                    }
 2599                });
 2600                tasks.push(task);
 2601            }
 2602
 2603            futures::future::join_all(tasks).await
 2604        })
 2605    }
 2606
 2607    pub fn open_resolved_path(
 2608        &mut self,
 2609        path: ResolvedPath,
 2610        window: &mut Window,
 2611        cx: &mut Context<Self>,
 2612    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2613        match path {
 2614            ResolvedPath::ProjectPath { project_path, .. } => {
 2615                self.open_path(project_path, None, true, window, cx)
 2616            }
 2617            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2618                path,
 2619                OpenOptions {
 2620                    visible: Some(OpenVisible::None),
 2621                    ..Default::default()
 2622                },
 2623                window,
 2624                cx,
 2625            ),
 2626        }
 2627    }
 2628
 2629    pub fn absolute_path_of_worktree(
 2630        &self,
 2631        worktree_id: WorktreeId,
 2632        cx: &mut Context<Self>,
 2633    ) -> Option<PathBuf> {
 2634        self.project
 2635            .read(cx)
 2636            .worktree_for_id(worktree_id, cx)
 2637            // TODO: use `abs_path` or `root_dir`
 2638            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2639    }
 2640
 2641    fn add_folder_to_project(
 2642        &mut self,
 2643        _: &AddFolderToProject,
 2644        window: &mut Window,
 2645        cx: &mut Context<Self>,
 2646    ) {
 2647        let project = self.project.read(cx);
 2648        if project.is_via_collab() {
 2649            self.show_error(
 2650                &anyhow!("You cannot add folders to someone else's project"),
 2651                cx,
 2652            );
 2653            return;
 2654        }
 2655        let paths = self.prompt_for_open_path(
 2656            PathPromptOptions {
 2657                files: false,
 2658                directories: true,
 2659                multiple: true,
 2660            },
 2661            DirectoryLister::Project(self.project.clone()),
 2662            window,
 2663            cx,
 2664        );
 2665        cx.spawn_in(window, async move |this, cx| {
 2666            if let Some(paths) = paths.await.log_err().flatten() {
 2667                let results = this
 2668                    .update_in(cx, |this, window, cx| {
 2669                        this.open_paths(
 2670                            paths,
 2671                            OpenOptions {
 2672                                visible: Some(OpenVisible::All),
 2673                                ..Default::default()
 2674                            },
 2675                            None,
 2676                            window,
 2677                            cx,
 2678                        )
 2679                    })?
 2680                    .await;
 2681                for result in results.into_iter().flatten() {
 2682                    result.log_err();
 2683                }
 2684            }
 2685            anyhow::Ok(())
 2686        })
 2687        .detach_and_log_err(cx);
 2688    }
 2689
 2690    pub fn project_path_for_path(
 2691        project: Entity<Project>,
 2692        abs_path: &Path,
 2693        visible: bool,
 2694        cx: &mut App,
 2695    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2696        let entry = project.update(cx, |project, cx| {
 2697            project.find_or_create_worktree(abs_path, visible, cx)
 2698        });
 2699        cx.spawn(async move |cx| {
 2700            let (worktree, path) = entry.await?;
 2701            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2702            Ok((
 2703                worktree,
 2704                ProjectPath {
 2705                    worktree_id,
 2706                    path: path.into(),
 2707                },
 2708            ))
 2709        })
 2710    }
 2711
 2712    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2713        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2714    }
 2715
 2716    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2717        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2718    }
 2719
 2720    pub fn items_of_type<'a, T: Item>(
 2721        &'a self,
 2722        cx: &'a App,
 2723    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2724        self.panes
 2725            .iter()
 2726            .flat_map(|pane| pane.read(cx).items_of_type())
 2727    }
 2728
 2729    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2730        self.active_pane().read(cx).active_item()
 2731    }
 2732
 2733    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2734        let item = self.active_item(cx)?;
 2735        item.to_any().downcast::<I>().ok()
 2736    }
 2737
 2738    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2739        self.active_item(cx).and_then(|item| item.project_path(cx))
 2740    }
 2741
 2742    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2743        self.recent_navigation_history_iter(cx)
 2744            .filter_map(|(path, abs_path)| {
 2745                let worktree = self
 2746                    .project
 2747                    .read(cx)
 2748                    .worktree_for_id(path.worktree_id, cx)?;
 2749                if worktree.read(cx).is_visible() {
 2750                    abs_path
 2751                } else {
 2752                    None
 2753                }
 2754            })
 2755            .next()
 2756    }
 2757
 2758    pub fn save_active_item(
 2759        &mut self,
 2760        save_intent: SaveIntent,
 2761        window: &mut Window,
 2762        cx: &mut App,
 2763    ) -> Task<Result<()>> {
 2764        let project = self.project.clone();
 2765        let pane = self.active_pane();
 2766        let item = pane.read(cx).active_item();
 2767        let pane = pane.downgrade();
 2768
 2769        window.spawn(cx, async move |mut cx| {
 2770            if let Some(item) = item {
 2771                Pane::save_item(project, &pane, item.as_ref(), save_intent, &mut cx)
 2772                    .await
 2773                    .map(|_| ())
 2774            } else {
 2775                Ok(())
 2776            }
 2777        })
 2778    }
 2779
 2780    pub fn close_inactive_items_and_panes(
 2781        &mut self,
 2782        action: &CloseInactiveTabsAndPanes,
 2783        window: &mut Window,
 2784        cx: &mut Context<Self>,
 2785    ) {
 2786        if let Some(task) = self.close_all_internal(
 2787            true,
 2788            action.save_intent.unwrap_or(SaveIntent::Close),
 2789            window,
 2790            cx,
 2791        ) {
 2792            task.detach_and_log_err(cx)
 2793        }
 2794    }
 2795
 2796    pub fn close_all_items_and_panes(
 2797        &mut self,
 2798        action: &CloseAllItemsAndPanes,
 2799        window: &mut Window,
 2800        cx: &mut Context<Self>,
 2801    ) {
 2802        if let Some(task) = self.close_all_internal(
 2803            false,
 2804            action.save_intent.unwrap_or(SaveIntent::Close),
 2805            window,
 2806            cx,
 2807        ) {
 2808            task.detach_and_log_err(cx)
 2809        }
 2810    }
 2811
 2812    fn close_all_internal(
 2813        &mut self,
 2814        retain_active_pane: bool,
 2815        save_intent: SaveIntent,
 2816        window: &mut Window,
 2817        cx: &mut Context<Self>,
 2818    ) -> Option<Task<Result<()>>> {
 2819        let current_pane = self.active_pane();
 2820
 2821        let mut tasks = Vec::new();
 2822
 2823        if retain_active_pane {
 2824            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2825                pane.close_other_items(
 2826                    &CloseOtherItems {
 2827                        save_intent: None,
 2828                        close_pinned: false,
 2829                    },
 2830                    None,
 2831                    window,
 2832                    cx,
 2833                )
 2834            });
 2835
 2836            tasks.push(current_pane_close);
 2837        }
 2838
 2839        for pane in self.panes() {
 2840            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2841                continue;
 2842            }
 2843
 2844            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2845                pane.close_all_items(
 2846                    &CloseAllItems {
 2847                        save_intent: Some(save_intent),
 2848                        close_pinned: false,
 2849                    },
 2850                    window,
 2851                    cx,
 2852                )
 2853            });
 2854
 2855            tasks.push(close_pane_items)
 2856        }
 2857
 2858        if tasks.is_empty() {
 2859            None
 2860        } else {
 2861            Some(cx.spawn_in(window, async move |_, _| {
 2862                for task in tasks {
 2863                    task.await?
 2864                }
 2865                Ok(())
 2866            }))
 2867        }
 2868    }
 2869
 2870    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2871        self.dock_at_position(position).read(cx).is_open()
 2872    }
 2873
 2874    pub fn toggle_dock(
 2875        &mut self,
 2876        dock_side: DockPosition,
 2877        window: &mut Window,
 2878        cx: &mut Context<Self>,
 2879    ) {
 2880        let dock = self.dock_at_position(dock_side);
 2881        let mut focus_center = false;
 2882        let mut reveal_dock = false;
 2883        dock.update(cx, |dock, cx| {
 2884            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2885            let was_visible = dock.is_open() && !other_is_zoomed;
 2886            dock.set_open(!was_visible, window, cx);
 2887
 2888            if dock.active_panel().is_none() {
 2889                let Some(panel_ix) = dock
 2890                    .first_enabled_panel_idx(cx)
 2891                    .log_with_level(log::Level::Info)
 2892                else {
 2893                    return;
 2894                };
 2895                dock.activate_panel(panel_ix, window, cx);
 2896            }
 2897
 2898            if let Some(active_panel) = dock.active_panel() {
 2899                if was_visible {
 2900                    if active_panel
 2901                        .panel_focus_handle(cx)
 2902                        .contains_focused(window, cx)
 2903                    {
 2904                        focus_center = true;
 2905                    }
 2906                } else {
 2907                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2908                    window.focus(focus_handle);
 2909                    reveal_dock = true;
 2910                }
 2911            }
 2912        });
 2913
 2914        if reveal_dock {
 2915            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2916        }
 2917
 2918        if focus_center {
 2919            self.active_pane
 2920                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2921        }
 2922
 2923        cx.notify();
 2924        self.serialize_workspace(window, cx);
 2925    }
 2926
 2927    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2928        self.all_docks().into_iter().find(|&dock| {
 2929            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2930        })
 2931    }
 2932
 2933    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2934        if let Some(dock) = self.active_dock(window, cx) {
 2935            dock.update(cx, |dock, cx| {
 2936                dock.set_open(false, window, cx);
 2937            });
 2938            return true;
 2939        }
 2940        false
 2941    }
 2942
 2943    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2944        for dock in self.all_docks() {
 2945            dock.update(cx, |dock, cx| {
 2946                dock.set_open(false, window, cx);
 2947            });
 2948        }
 2949
 2950        cx.focus_self(window);
 2951        cx.notify();
 2952        self.serialize_workspace(window, cx);
 2953    }
 2954
 2955    /// Transfer focus to the panel of the given type.
 2956    pub fn focus_panel<T: Panel>(
 2957        &mut self,
 2958        window: &mut Window,
 2959        cx: &mut Context<Self>,
 2960    ) -> Option<Entity<T>> {
 2961        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2962        panel.to_any().downcast().ok()
 2963    }
 2964
 2965    /// Focus the panel of the given type if it isn't already focused. If it is
 2966    /// already focused, then transfer focus back to the workspace center.
 2967    pub fn toggle_panel_focus<T: Panel>(
 2968        &mut self,
 2969        window: &mut Window,
 2970        cx: &mut Context<Self>,
 2971    ) -> bool {
 2972        let mut did_focus_panel = false;
 2973        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 2974            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 2975            did_focus_panel
 2976        });
 2977        did_focus_panel
 2978    }
 2979
 2980    pub fn activate_panel_for_proto_id(
 2981        &mut self,
 2982        panel_id: PanelId,
 2983        window: &mut Window,
 2984        cx: &mut Context<Self>,
 2985    ) -> Option<Arc<dyn PanelHandle>> {
 2986        let mut panel = None;
 2987        for dock in self.all_docks() {
 2988            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 2989                panel = dock.update(cx, |dock, cx| {
 2990                    dock.activate_panel(panel_index, window, cx);
 2991                    dock.set_open(true, window, cx);
 2992                    dock.active_panel().cloned()
 2993                });
 2994                break;
 2995            }
 2996        }
 2997
 2998        if panel.is_some() {
 2999            cx.notify();
 3000            self.serialize_workspace(window, cx);
 3001        }
 3002
 3003        panel
 3004    }
 3005
 3006    /// Focus or unfocus the given panel type, depending on the given callback.
 3007    fn focus_or_unfocus_panel<T: Panel>(
 3008        &mut self,
 3009        window: &mut Window,
 3010        cx: &mut Context<Self>,
 3011        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3012    ) -> Option<Arc<dyn PanelHandle>> {
 3013        let mut result_panel = None;
 3014        let mut serialize = false;
 3015        for dock in self.all_docks() {
 3016            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3017                let mut focus_center = false;
 3018                let panel = dock.update(cx, |dock, cx| {
 3019                    dock.activate_panel(panel_index, window, cx);
 3020
 3021                    let panel = dock.active_panel().cloned();
 3022                    if let Some(panel) = panel.as_ref() {
 3023                        if should_focus(&**panel, window, cx) {
 3024                            dock.set_open(true, window, cx);
 3025                            panel.panel_focus_handle(cx).focus(window);
 3026                        } else {
 3027                            focus_center = true;
 3028                        }
 3029                    }
 3030                    panel
 3031                });
 3032
 3033                if focus_center {
 3034                    self.active_pane
 3035                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3036                }
 3037
 3038                result_panel = panel;
 3039                serialize = true;
 3040                break;
 3041            }
 3042        }
 3043
 3044        if serialize {
 3045            self.serialize_workspace(window, cx);
 3046        }
 3047
 3048        cx.notify();
 3049        result_panel
 3050    }
 3051
 3052    /// Open the panel of the given type
 3053    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3054        for dock in self.all_docks() {
 3055            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3056                dock.update(cx, |dock, cx| {
 3057                    dock.activate_panel(panel_index, window, cx);
 3058                    dock.set_open(true, window, cx);
 3059                });
 3060            }
 3061        }
 3062    }
 3063
 3064    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3065        self.all_docks()
 3066            .iter()
 3067            .find_map(|dock| dock.read(cx).panel::<T>())
 3068    }
 3069
 3070    fn dismiss_zoomed_items_to_reveal(
 3071        &mut self,
 3072        dock_to_reveal: Option<DockPosition>,
 3073        window: &mut Window,
 3074        cx: &mut Context<Self>,
 3075    ) {
 3076        // If a center pane is zoomed, unzoom it.
 3077        for pane in &self.panes {
 3078            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3079                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3080            }
 3081        }
 3082
 3083        // If another dock is zoomed, hide it.
 3084        let mut focus_center = false;
 3085        for dock in self.all_docks() {
 3086            dock.update(cx, |dock, cx| {
 3087                if Some(dock.position()) != dock_to_reveal {
 3088                    if let Some(panel) = dock.active_panel() {
 3089                        if panel.is_zoomed(window, cx) {
 3090                            focus_center |=
 3091                                panel.panel_focus_handle(cx).contains_focused(window, cx);
 3092                            dock.set_open(false, window, cx);
 3093                        }
 3094                    }
 3095                }
 3096            });
 3097        }
 3098
 3099        if focus_center {
 3100            self.active_pane
 3101                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3102        }
 3103
 3104        if self.zoomed_position != dock_to_reveal {
 3105            self.zoomed = None;
 3106            self.zoomed_position = None;
 3107            cx.emit(Event::ZoomChanged);
 3108        }
 3109
 3110        cx.notify();
 3111    }
 3112
 3113    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3114        let pane = cx.new(|cx| {
 3115            let mut pane = Pane::new(
 3116                self.weak_handle(),
 3117                self.project.clone(),
 3118                self.pane_history_timestamp.clone(),
 3119                None,
 3120                NewFile.boxed_clone(),
 3121                window,
 3122                cx,
 3123            );
 3124            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3125            pane
 3126        });
 3127        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3128            .detach();
 3129        self.panes.push(pane.clone());
 3130
 3131        window.focus(&pane.focus_handle(cx));
 3132
 3133        cx.emit(Event::PaneAdded(pane.clone()));
 3134        pane
 3135    }
 3136
 3137    pub fn add_item_to_center(
 3138        &mut self,
 3139        item: Box<dyn ItemHandle>,
 3140        window: &mut Window,
 3141        cx: &mut Context<Self>,
 3142    ) -> bool {
 3143        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3144            if let Some(center_pane) = center_pane.upgrade() {
 3145                center_pane.update(cx, |pane, cx| {
 3146                    pane.add_item(item, true, true, None, window, cx)
 3147                });
 3148                true
 3149            } else {
 3150                false
 3151            }
 3152        } else {
 3153            false
 3154        }
 3155    }
 3156
 3157    pub fn add_item_to_active_pane(
 3158        &mut self,
 3159        item: Box<dyn ItemHandle>,
 3160        destination_index: Option<usize>,
 3161        focus_item: bool,
 3162        window: &mut Window,
 3163        cx: &mut App,
 3164    ) {
 3165        self.add_item(
 3166            self.active_pane.clone(),
 3167            item,
 3168            destination_index,
 3169            false,
 3170            focus_item,
 3171            window,
 3172            cx,
 3173        )
 3174    }
 3175
 3176    pub fn add_item(
 3177        &mut self,
 3178        pane: Entity<Pane>,
 3179        item: Box<dyn ItemHandle>,
 3180        destination_index: Option<usize>,
 3181        activate_pane: bool,
 3182        focus_item: bool,
 3183        window: &mut Window,
 3184        cx: &mut App,
 3185    ) {
 3186        if let Some(text) = item.telemetry_event_text(cx) {
 3187            telemetry::event!(text);
 3188        }
 3189
 3190        pane.update(cx, |pane, cx| {
 3191            pane.add_item(
 3192                item,
 3193                activate_pane,
 3194                focus_item,
 3195                destination_index,
 3196                window,
 3197                cx,
 3198            )
 3199        });
 3200    }
 3201
 3202    pub fn split_item(
 3203        &mut self,
 3204        split_direction: SplitDirection,
 3205        item: Box<dyn ItemHandle>,
 3206        window: &mut Window,
 3207        cx: &mut Context<Self>,
 3208    ) {
 3209        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3210        self.add_item(new_pane, item, None, true, true, window, cx);
 3211    }
 3212
 3213    pub fn open_abs_path(
 3214        &mut self,
 3215        abs_path: PathBuf,
 3216        options: OpenOptions,
 3217        window: &mut Window,
 3218        cx: &mut Context<Self>,
 3219    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3220        cx.spawn_in(window, async move |workspace, cx| {
 3221            let open_paths_task_result = workspace
 3222                .update_in(cx, |workspace, window, cx| {
 3223                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3224                })
 3225                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3226                .await;
 3227            anyhow::ensure!(
 3228                open_paths_task_result.len() == 1,
 3229                "open abs path {abs_path:?} task returned incorrect number of results"
 3230            );
 3231            match open_paths_task_result
 3232                .into_iter()
 3233                .next()
 3234                .expect("ensured single task result")
 3235            {
 3236                Some(open_result) => {
 3237                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3238                }
 3239                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3240            }
 3241        })
 3242    }
 3243
 3244    pub fn split_abs_path(
 3245        &mut self,
 3246        abs_path: PathBuf,
 3247        visible: bool,
 3248        window: &mut Window,
 3249        cx: &mut Context<Self>,
 3250    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3251        let project_path_task =
 3252            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3253        cx.spawn_in(window, async move |this, cx| {
 3254            let (_, path) = project_path_task.await?;
 3255            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3256                .await
 3257        })
 3258    }
 3259
 3260    pub fn open_path(
 3261        &mut self,
 3262        path: impl Into<ProjectPath>,
 3263        pane: Option<WeakEntity<Pane>>,
 3264        focus_item: bool,
 3265        window: &mut Window,
 3266        cx: &mut App,
 3267    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3268        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3269    }
 3270
 3271    pub fn open_path_preview(
 3272        &mut self,
 3273        path: impl Into<ProjectPath>,
 3274        pane: Option<WeakEntity<Pane>>,
 3275        focus_item: bool,
 3276        allow_preview: bool,
 3277        activate: bool,
 3278        window: &mut Window,
 3279        cx: &mut App,
 3280    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3281        let pane = pane.unwrap_or_else(|| {
 3282            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3283                self.panes
 3284                    .first()
 3285                    .expect("There must be an active pane")
 3286                    .downgrade()
 3287            })
 3288        });
 3289
 3290        let project_path = path.into();
 3291        let task = self.load_path(project_path.clone(), window, cx);
 3292        window.spawn(cx, async move |cx| {
 3293            let (project_entry_id, build_item) = task.await?;
 3294            let result = pane.update_in(cx, |pane, window, cx| {
 3295                pane.open_item(
 3296                    project_entry_id,
 3297                    project_path,
 3298                    focus_item,
 3299                    allow_preview,
 3300                    activate,
 3301                    None,
 3302                    window,
 3303                    cx,
 3304                    build_item,
 3305                )
 3306            });
 3307            result
 3308        })
 3309    }
 3310
 3311    pub fn split_path(
 3312        &mut self,
 3313        path: impl Into<ProjectPath>,
 3314        window: &mut Window,
 3315        cx: &mut Context<Self>,
 3316    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3317        self.split_path_preview(path, false, None, window, cx)
 3318    }
 3319
 3320    pub fn split_path_preview(
 3321        &mut self,
 3322        path: impl Into<ProjectPath>,
 3323        allow_preview: bool,
 3324        split_direction: Option<SplitDirection>,
 3325        window: &mut Window,
 3326        cx: &mut Context<Self>,
 3327    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3328        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3329            self.panes
 3330                .first()
 3331                .expect("There must be an active pane")
 3332                .downgrade()
 3333        });
 3334
 3335        if let Member::Pane(center_pane) = &self.center.root {
 3336            if center_pane.read(cx).items_len() == 0 {
 3337                return self.open_path(path, Some(pane), true, window, cx);
 3338            }
 3339        }
 3340
 3341        let project_path = path.into();
 3342        let task = self.load_path(project_path.clone(), window, cx);
 3343        cx.spawn_in(window, async move |this, cx| {
 3344            let (project_entry_id, build_item) = task.await?;
 3345            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3346                let pane = pane.upgrade()?;
 3347                let new_pane = this.split_pane(
 3348                    pane,
 3349                    split_direction.unwrap_or(SplitDirection::Right),
 3350                    window,
 3351                    cx,
 3352                );
 3353                new_pane.update(cx, |new_pane, cx| {
 3354                    Some(new_pane.open_item(
 3355                        project_entry_id,
 3356                        project_path,
 3357                        true,
 3358                        allow_preview,
 3359                        true,
 3360                        None,
 3361                        window,
 3362                        cx,
 3363                        build_item,
 3364                    ))
 3365                })
 3366            })
 3367            .map(|option| option.context("pane was dropped"))?
 3368        })
 3369    }
 3370
 3371    fn load_path(
 3372        &mut self,
 3373        path: ProjectPath,
 3374        window: &mut Window,
 3375        cx: &mut App,
 3376    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3377        let project = self.project().clone();
 3378        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3379        registry.open_path(&project, &path, window, cx)
 3380    }
 3381
 3382    pub fn find_project_item<T>(
 3383        &self,
 3384        pane: &Entity<Pane>,
 3385        project_item: &Entity<T::Item>,
 3386        cx: &App,
 3387    ) -> Option<Entity<T>>
 3388    where
 3389        T: ProjectItem,
 3390    {
 3391        use project::ProjectItem as _;
 3392        let project_item = project_item.read(cx);
 3393        let entry_id = project_item.entry_id(cx);
 3394        let project_path = project_item.project_path(cx);
 3395
 3396        let mut item = None;
 3397        if let Some(entry_id) = entry_id {
 3398            item = pane.read(cx).item_for_entry(entry_id, cx);
 3399        }
 3400        if item.is_none() {
 3401            if let Some(project_path) = project_path {
 3402                item = pane.read(cx).item_for_path(project_path, cx);
 3403            }
 3404        }
 3405
 3406        item.and_then(|item| item.downcast::<T>())
 3407    }
 3408
 3409    pub fn is_project_item_open<T>(
 3410        &self,
 3411        pane: &Entity<Pane>,
 3412        project_item: &Entity<T::Item>,
 3413        cx: &App,
 3414    ) -> bool
 3415    where
 3416        T: ProjectItem,
 3417    {
 3418        self.find_project_item::<T>(pane, project_item, cx)
 3419            .is_some()
 3420    }
 3421
 3422    pub fn open_project_item<T>(
 3423        &mut self,
 3424        pane: Entity<Pane>,
 3425        project_item: Entity<T::Item>,
 3426        activate_pane: bool,
 3427        focus_item: bool,
 3428        window: &mut Window,
 3429        cx: &mut Context<Self>,
 3430    ) -> Entity<T>
 3431    where
 3432        T: ProjectItem,
 3433    {
 3434        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3435            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3436            return item;
 3437        }
 3438
 3439        let item = pane.update(cx, |pane, cx| {
 3440            cx.new(|cx| {
 3441                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3442            })
 3443        });
 3444        let item_id = item.item_id();
 3445        let mut destination_index = None;
 3446        pane.update(cx, |pane, cx| {
 3447            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
 3448                if let Some(preview_item_id) = pane.preview_item_id() {
 3449                    if preview_item_id != item_id {
 3450                        destination_index = pane.close_current_preview_item(window, cx);
 3451                    }
 3452                }
 3453            }
 3454            pane.set_preview_item_id(Some(item.item_id()), cx)
 3455        });
 3456
 3457        self.add_item(
 3458            pane,
 3459            Box::new(item.clone()),
 3460            destination_index,
 3461            activate_pane,
 3462            focus_item,
 3463            window,
 3464            cx,
 3465        );
 3466        item
 3467    }
 3468
 3469    pub fn open_shared_screen(
 3470        &mut self,
 3471        peer_id: PeerId,
 3472        window: &mut Window,
 3473        cx: &mut Context<Self>,
 3474    ) {
 3475        if let Some(shared_screen) =
 3476            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3477        {
 3478            self.active_pane.update(cx, |pane, cx| {
 3479                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3480            });
 3481        }
 3482    }
 3483
 3484    pub fn activate_item(
 3485        &mut self,
 3486        item: &dyn ItemHandle,
 3487        activate_pane: bool,
 3488        focus_item: bool,
 3489        window: &mut Window,
 3490        cx: &mut App,
 3491    ) -> bool {
 3492        let result = self.panes.iter().find_map(|pane| {
 3493            pane.read(cx)
 3494                .index_for_item(item)
 3495                .map(|ix| (pane.clone(), ix))
 3496        });
 3497        if let Some((pane, ix)) = result {
 3498            pane.update(cx, |pane, cx| {
 3499                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3500            });
 3501            true
 3502        } else {
 3503            false
 3504        }
 3505    }
 3506
 3507    fn activate_pane_at_index(
 3508        &mut self,
 3509        action: &ActivatePane,
 3510        window: &mut Window,
 3511        cx: &mut Context<Self>,
 3512    ) {
 3513        let panes = self.center.panes();
 3514        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3515            window.focus(&pane.focus_handle(cx));
 3516        } else {
 3517            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3518        }
 3519    }
 3520
 3521    fn move_item_to_pane_at_index(
 3522        &mut self,
 3523        action: &MoveItemToPane,
 3524        window: &mut Window,
 3525        cx: &mut Context<Self>,
 3526    ) {
 3527        let panes = self.center.panes();
 3528        let destination = match panes.get(action.destination) {
 3529            Some(&destination) => destination.clone(),
 3530            None => {
 3531                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3532                    return;
 3533                }
 3534                let direction = SplitDirection::Right;
 3535                let split_off_pane = self
 3536                    .find_pane_in_direction(direction, cx)
 3537                    .unwrap_or_else(|| self.active_pane.clone());
 3538                let new_pane = self.add_pane(window, cx);
 3539                if self
 3540                    .center
 3541                    .split(&split_off_pane, &new_pane, direction)
 3542                    .log_err()
 3543                    .is_none()
 3544                {
 3545                    return;
 3546                };
 3547                new_pane
 3548            }
 3549        };
 3550
 3551        if action.clone {
 3552            clone_active_item(
 3553                self.database_id(),
 3554                &self.active_pane,
 3555                &destination,
 3556                action.focus,
 3557                window,
 3558                cx,
 3559            )
 3560        } else {
 3561            move_active_item(
 3562                &self.active_pane,
 3563                &destination,
 3564                action.focus,
 3565                true,
 3566                window,
 3567                cx,
 3568            )
 3569        }
 3570    }
 3571
 3572    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3573        let panes = self.center.panes();
 3574        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3575            let next_ix = (ix + 1) % panes.len();
 3576            let next_pane = panes[next_ix].clone();
 3577            window.focus(&next_pane.focus_handle(cx));
 3578        }
 3579    }
 3580
 3581    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3582        let panes = self.center.panes();
 3583        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3584            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3585            let prev_pane = panes[prev_ix].clone();
 3586            window.focus(&prev_pane.focus_handle(cx));
 3587        }
 3588    }
 3589
 3590    pub fn activate_pane_in_direction(
 3591        &mut self,
 3592        direction: SplitDirection,
 3593        window: &mut Window,
 3594        cx: &mut App,
 3595    ) {
 3596        use ActivateInDirectionTarget as Target;
 3597        enum Origin {
 3598            LeftDock,
 3599            RightDock,
 3600            BottomDock,
 3601            Center,
 3602        }
 3603
 3604        let origin: Origin = [
 3605            (&self.left_dock, Origin::LeftDock),
 3606            (&self.right_dock, Origin::RightDock),
 3607            (&self.bottom_dock, Origin::BottomDock),
 3608        ]
 3609        .into_iter()
 3610        .find_map(|(dock, origin)| {
 3611            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3612                Some(origin)
 3613            } else {
 3614                None
 3615            }
 3616        })
 3617        .unwrap_or(Origin::Center);
 3618
 3619        let get_last_active_pane = || {
 3620            let pane = self
 3621                .last_active_center_pane
 3622                .clone()
 3623                .unwrap_or_else(|| {
 3624                    self.panes
 3625                        .first()
 3626                        .expect("There must be an active pane")
 3627                        .downgrade()
 3628                })
 3629                .upgrade()?;
 3630            (pane.read(cx).items_len() != 0).then_some(pane)
 3631        };
 3632
 3633        let try_dock =
 3634            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3635
 3636        let target = match (origin, direction) {
 3637            // We're in the center, so we first try to go to a different pane,
 3638            // otherwise try to go to a dock.
 3639            (Origin::Center, direction) => {
 3640                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3641                    Some(Target::Pane(pane))
 3642                } else {
 3643                    match direction {
 3644                        SplitDirection::Up => None,
 3645                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3646                        SplitDirection::Left => try_dock(&self.left_dock),
 3647                        SplitDirection::Right => try_dock(&self.right_dock),
 3648                    }
 3649                }
 3650            }
 3651
 3652            (Origin::LeftDock, SplitDirection::Right) => {
 3653                if let Some(last_active_pane) = get_last_active_pane() {
 3654                    Some(Target::Pane(last_active_pane))
 3655                } else {
 3656                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3657                }
 3658            }
 3659
 3660            (Origin::LeftDock, SplitDirection::Down)
 3661            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3662
 3663            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3664            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3665            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3666
 3667            (Origin::RightDock, SplitDirection::Left) => {
 3668                if let Some(last_active_pane) = get_last_active_pane() {
 3669                    Some(Target::Pane(last_active_pane))
 3670                } else {
 3671                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3672                }
 3673            }
 3674
 3675            _ => None,
 3676        };
 3677
 3678        match target {
 3679            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3680                let pane = pane.read(cx);
 3681                if let Some(item) = pane.active_item() {
 3682                    item.item_focus_handle(cx).focus(window);
 3683                } else {
 3684                    log::error!(
 3685                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3686                    );
 3687                }
 3688            }
 3689            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3690                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3691                window.defer(cx, move |window, cx| {
 3692                    let dock = dock.read(cx);
 3693                    if let Some(panel) = dock.active_panel() {
 3694                        panel.panel_focus_handle(cx).focus(window);
 3695                    } else {
 3696                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3697                    }
 3698                })
 3699            }
 3700            None => {}
 3701        }
 3702    }
 3703
 3704    pub fn move_item_to_pane_in_direction(
 3705        &mut self,
 3706        action: &MoveItemToPaneInDirection,
 3707        window: &mut Window,
 3708        cx: &mut Context<Self>,
 3709    ) {
 3710        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3711            Some(destination) => destination,
 3712            None => {
 3713                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3714                    return;
 3715                }
 3716                let new_pane = self.add_pane(window, cx);
 3717                if self
 3718                    .center
 3719                    .split(&self.active_pane, &new_pane, action.direction)
 3720                    .log_err()
 3721                    .is_none()
 3722                {
 3723                    return;
 3724                };
 3725                new_pane
 3726            }
 3727        };
 3728
 3729        if action.clone {
 3730            clone_active_item(
 3731                self.database_id(),
 3732                &self.active_pane,
 3733                &destination,
 3734                action.focus,
 3735                window,
 3736                cx,
 3737            )
 3738        } else {
 3739            move_active_item(
 3740                &self.active_pane,
 3741                &destination,
 3742                action.focus,
 3743                true,
 3744                window,
 3745                cx,
 3746            );
 3747        }
 3748    }
 3749
 3750    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3751        self.center.bounding_box_for_pane(pane)
 3752    }
 3753
 3754    pub fn find_pane_in_direction(
 3755        &mut self,
 3756        direction: SplitDirection,
 3757        cx: &App,
 3758    ) -> Option<Entity<Pane>> {
 3759        self.center
 3760            .find_pane_in_direction(&self.active_pane, direction, cx)
 3761            .cloned()
 3762    }
 3763
 3764    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3765        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3766            self.center.swap(&self.active_pane, &to);
 3767            cx.notify();
 3768        }
 3769    }
 3770
 3771    pub fn resize_pane(
 3772        &mut self,
 3773        axis: gpui::Axis,
 3774        amount: Pixels,
 3775        window: &mut Window,
 3776        cx: &mut Context<Self>,
 3777    ) {
 3778        let docks = self.all_docks();
 3779        let active_dock = docks
 3780            .into_iter()
 3781            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3782
 3783        if let Some(dock) = active_dock {
 3784            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3785                return;
 3786            };
 3787            match dock.read(cx).position() {
 3788                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3789                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3790                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3791            }
 3792        } else {
 3793            self.center
 3794                .resize(&self.active_pane, axis, amount, &self.bounds);
 3795        }
 3796        cx.notify();
 3797    }
 3798
 3799    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3800        self.center.reset_pane_sizes();
 3801        cx.notify();
 3802    }
 3803
 3804    fn handle_pane_focused(
 3805        &mut self,
 3806        pane: Entity<Pane>,
 3807        window: &mut Window,
 3808        cx: &mut Context<Self>,
 3809    ) {
 3810        // This is explicitly hoisted out of the following check for pane identity as
 3811        // terminal panel panes are not registered as a center panes.
 3812        self.status_bar.update(cx, |status_bar, cx| {
 3813            status_bar.set_active_pane(&pane, window, cx);
 3814        });
 3815        if self.active_pane != pane {
 3816            self.set_active_pane(&pane, window, cx);
 3817        }
 3818
 3819        if self.last_active_center_pane.is_none() {
 3820            self.last_active_center_pane = Some(pane.downgrade());
 3821        }
 3822
 3823        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3824        if pane.read(cx).is_zoomed() {
 3825            self.zoomed = Some(pane.downgrade().into());
 3826        } else {
 3827            self.zoomed = None;
 3828        }
 3829        self.zoomed_position = None;
 3830        cx.emit(Event::ZoomChanged);
 3831        self.update_active_view_for_followers(window, cx);
 3832        pane.update(cx, |pane, _| {
 3833            pane.track_alternate_file_items();
 3834        });
 3835
 3836        cx.notify();
 3837    }
 3838
 3839    fn set_active_pane(
 3840        &mut self,
 3841        pane: &Entity<Pane>,
 3842        window: &mut Window,
 3843        cx: &mut Context<Self>,
 3844    ) {
 3845        self.active_pane = pane.clone();
 3846        self.active_item_path_changed(window, cx);
 3847        self.last_active_center_pane = Some(pane.downgrade());
 3848    }
 3849
 3850    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3851        self.update_active_view_for_followers(window, cx);
 3852    }
 3853
 3854    fn handle_pane_event(
 3855        &mut self,
 3856        pane: &Entity<Pane>,
 3857        event: &pane::Event,
 3858        window: &mut Window,
 3859        cx: &mut Context<Self>,
 3860    ) {
 3861        let mut serialize_workspace = true;
 3862        match event {
 3863            pane::Event::AddItem { item } => {
 3864                item.added_to_pane(self, pane.clone(), window, cx);
 3865                cx.emit(Event::ItemAdded {
 3866                    item: item.boxed_clone(),
 3867                });
 3868            }
 3869            pane::Event::Split(direction) => {
 3870                self.split_and_clone(pane.clone(), *direction, window, cx);
 3871            }
 3872            pane::Event::JoinIntoNext => {
 3873                self.join_pane_into_next(pane.clone(), window, cx);
 3874            }
 3875            pane::Event::JoinAll => {
 3876                self.join_all_panes(window, cx);
 3877            }
 3878            pane::Event::Remove { focus_on_pane } => {
 3879                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3880            }
 3881            pane::Event::ActivateItem {
 3882                local,
 3883                focus_changed,
 3884            } => {
 3885                cx.on_next_frame(window, |_, window, _| {
 3886                    window.invalidate_character_coordinates();
 3887                });
 3888
 3889                pane.update(cx, |pane, _| {
 3890                    pane.track_alternate_file_items();
 3891                });
 3892                if *local {
 3893                    self.unfollow_in_pane(&pane, window, cx);
 3894                }
 3895                serialize_workspace = *focus_changed || pane != self.active_pane();
 3896                if pane == self.active_pane() {
 3897                    self.active_item_path_changed(window, cx);
 3898                    self.update_active_view_for_followers(window, cx);
 3899                } else if *local {
 3900                    self.set_active_pane(&pane, window, cx);
 3901                }
 3902            }
 3903            pane::Event::UserSavedItem { item, save_intent } => {
 3904                cx.emit(Event::UserSavedItem {
 3905                    pane: pane.downgrade(),
 3906                    item: item.boxed_clone(),
 3907                    save_intent: *save_intent,
 3908                });
 3909                serialize_workspace = false;
 3910            }
 3911            pane::Event::ChangeItemTitle => {
 3912                if *pane == self.active_pane {
 3913                    self.active_item_path_changed(window, cx);
 3914                }
 3915                serialize_workspace = false;
 3916            }
 3917            pane::Event::RemoveItem { .. } => {}
 3918            pane::Event::RemovedItem { item } => {
 3919                cx.emit(Event::ActiveItemChanged);
 3920                self.update_window_edited(window, cx);
 3921                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id()) {
 3922                    if entry.get().entity_id() == pane.entity_id() {
 3923                        entry.remove();
 3924                    }
 3925                }
 3926            }
 3927            pane::Event::Focus => {
 3928                cx.on_next_frame(window, |_, window, _| {
 3929                    window.invalidate_character_coordinates();
 3930                });
 3931                self.handle_pane_focused(pane.clone(), window, cx);
 3932            }
 3933            pane::Event::ZoomIn => {
 3934                if *pane == self.active_pane {
 3935                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3936                    if pane.read(cx).has_focus(window, cx) {
 3937                        self.zoomed = Some(pane.downgrade().into());
 3938                        self.zoomed_position = None;
 3939                        cx.emit(Event::ZoomChanged);
 3940                    }
 3941                    cx.notify();
 3942                }
 3943            }
 3944            pane::Event::ZoomOut => {
 3945                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3946                if self.zoomed_position.is_none() {
 3947                    self.zoomed = None;
 3948                    cx.emit(Event::ZoomChanged);
 3949                }
 3950                cx.notify();
 3951            }
 3952            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3953        }
 3954
 3955        if serialize_workspace {
 3956            self.serialize_workspace(window, cx);
 3957        }
 3958    }
 3959
 3960    pub fn unfollow_in_pane(
 3961        &mut self,
 3962        pane: &Entity<Pane>,
 3963        window: &mut Window,
 3964        cx: &mut Context<Workspace>,
 3965    ) -> Option<CollaboratorId> {
 3966        let leader_id = self.leader_for_pane(pane)?;
 3967        self.unfollow(leader_id, window, cx);
 3968        Some(leader_id)
 3969    }
 3970
 3971    pub fn split_pane(
 3972        &mut self,
 3973        pane_to_split: Entity<Pane>,
 3974        split_direction: SplitDirection,
 3975        window: &mut Window,
 3976        cx: &mut Context<Self>,
 3977    ) -> Entity<Pane> {
 3978        let new_pane = self.add_pane(window, cx);
 3979        self.center
 3980            .split(&pane_to_split, &new_pane, split_direction)
 3981            .unwrap();
 3982        cx.notify();
 3983        new_pane
 3984    }
 3985
 3986    pub fn split_and_clone(
 3987        &mut self,
 3988        pane: Entity<Pane>,
 3989        direction: SplitDirection,
 3990        window: &mut Window,
 3991        cx: &mut Context<Self>,
 3992    ) -> Option<Entity<Pane>> {
 3993        let item = pane.read(cx).active_item()?;
 3994        let maybe_pane_handle =
 3995            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 3996                let new_pane = self.add_pane(window, cx);
 3997                new_pane.update(cx, |pane, cx| {
 3998                    pane.add_item(clone, true, true, None, window, cx)
 3999                });
 4000                self.center.split(&pane, &new_pane, direction).unwrap();
 4001                Some(new_pane)
 4002            } else {
 4003                None
 4004            };
 4005        cx.notify();
 4006        maybe_pane_handle
 4007    }
 4008
 4009    pub fn split_pane_with_item(
 4010        &mut self,
 4011        pane_to_split: WeakEntity<Pane>,
 4012        split_direction: SplitDirection,
 4013        from: WeakEntity<Pane>,
 4014        item_id_to_move: EntityId,
 4015        window: &mut Window,
 4016        cx: &mut Context<Self>,
 4017    ) {
 4018        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4019            return;
 4020        };
 4021        let Some(from) = from.upgrade() else {
 4022            return;
 4023        };
 4024
 4025        let new_pane = self.add_pane(window, cx);
 4026        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4027        self.center
 4028            .split(&pane_to_split, &new_pane, split_direction)
 4029            .unwrap();
 4030        cx.notify();
 4031    }
 4032
 4033    pub fn split_pane_with_project_entry(
 4034        &mut self,
 4035        pane_to_split: WeakEntity<Pane>,
 4036        split_direction: SplitDirection,
 4037        project_entry: ProjectEntryId,
 4038        window: &mut Window,
 4039        cx: &mut Context<Self>,
 4040    ) -> Option<Task<Result<()>>> {
 4041        let pane_to_split = pane_to_split.upgrade()?;
 4042        let new_pane = self.add_pane(window, cx);
 4043        self.center
 4044            .split(&pane_to_split, &new_pane, split_direction)
 4045            .unwrap();
 4046
 4047        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4048        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4049        Some(cx.foreground_executor().spawn(async move {
 4050            task.await?;
 4051            Ok(())
 4052        }))
 4053    }
 4054
 4055    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4056        let active_item = self.active_pane.read(cx).active_item();
 4057        for pane in &self.panes {
 4058            join_pane_into_active(&self.active_pane, pane, window, cx);
 4059        }
 4060        if let Some(active_item) = active_item {
 4061            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4062        }
 4063        cx.notify();
 4064    }
 4065
 4066    pub fn join_pane_into_next(
 4067        &mut self,
 4068        pane: Entity<Pane>,
 4069        window: &mut Window,
 4070        cx: &mut Context<Self>,
 4071    ) {
 4072        let next_pane = self
 4073            .find_pane_in_direction(SplitDirection::Right, cx)
 4074            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4075            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4076            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4077        let Some(next_pane) = next_pane else {
 4078            return;
 4079        };
 4080        move_all_items(&pane, &next_pane, window, cx);
 4081        cx.notify();
 4082    }
 4083
 4084    fn remove_pane(
 4085        &mut self,
 4086        pane: Entity<Pane>,
 4087        focus_on: Option<Entity<Pane>>,
 4088        window: &mut Window,
 4089        cx: &mut Context<Self>,
 4090    ) {
 4091        if self.center.remove(&pane).unwrap() {
 4092            self.force_remove_pane(&pane, &focus_on, window, cx);
 4093            self.unfollow_in_pane(&pane, window, cx);
 4094            self.last_leaders_by_pane.remove(&pane.downgrade());
 4095            for removed_item in pane.read(cx).items() {
 4096                self.panes_by_item.remove(&removed_item.item_id());
 4097            }
 4098
 4099            cx.notify();
 4100        } else {
 4101            self.active_item_path_changed(window, cx);
 4102        }
 4103        cx.emit(Event::PaneRemoved);
 4104    }
 4105
 4106    pub fn panes(&self) -> &[Entity<Pane>] {
 4107        &self.panes
 4108    }
 4109
 4110    pub fn active_pane(&self) -> &Entity<Pane> {
 4111        &self.active_pane
 4112    }
 4113
 4114    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4115        for dock in self.all_docks() {
 4116            if dock.focus_handle(cx).contains_focused(window, cx) {
 4117                if let Some(pane) = dock
 4118                    .read(cx)
 4119                    .active_panel()
 4120                    .and_then(|panel| panel.pane(cx))
 4121                {
 4122                    return pane;
 4123                }
 4124            }
 4125        }
 4126        self.active_pane().clone()
 4127    }
 4128
 4129    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4130        self.find_pane_in_direction(SplitDirection::Right, cx)
 4131            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4132            .unwrap_or_else(|| {
 4133                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4134            })
 4135            .clone()
 4136    }
 4137
 4138    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4139        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4140        weak_pane.upgrade()
 4141    }
 4142
 4143    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4144        self.follower_states.retain(|leader_id, state| {
 4145            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4146                for item in state.items_by_leader_view_id.values() {
 4147                    item.view.set_leader_id(None, window, cx);
 4148                }
 4149                false
 4150            } else {
 4151                true
 4152            }
 4153        });
 4154        cx.notify();
 4155    }
 4156
 4157    pub fn start_following(
 4158        &mut self,
 4159        leader_id: impl Into<CollaboratorId>,
 4160        window: &mut Window,
 4161        cx: &mut Context<Self>,
 4162    ) -> Option<Task<Result<()>>> {
 4163        let leader_id = leader_id.into();
 4164        let pane = self.active_pane().clone();
 4165
 4166        self.last_leaders_by_pane
 4167            .insert(pane.downgrade(), leader_id);
 4168        self.unfollow(leader_id, window, cx);
 4169        self.unfollow_in_pane(&pane, window, cx);
 4170        self.follower_states.insert(
 4171            leader_id,
 4172            FollowerState {
 4173                center_pane: pane.clone(),
 4174                dock_pane: None,
 4175                active_view_id: None,
 4176                items_by_leader_view_id: Default::default(),
 4177            },
 4178        );
 4179        cx.notify();
 4180
 4181        match leader_id {
 4182            CollaboratorId::PeerId(leader_peer_id) => {
 4183                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4184                let project_id = self.project.read(cx).remote_id();
 4185                let request = self.app_state.client.request(proto::Follow {
 4186                    room_id,
 4187                    project_id,
 4188                    leader_id: Some(leader_peer_id),
 4189                });
 4190
 4191                Some(cx.spawn_in(window, async move |this, cx| {
 4192                    let response = request.await?;
 4193                    this.update(cx, |this, _| {
 4194                        let state = this
 4195                            .follower_states
 4196                            .get_mut(&leader_id)
 4197                            .context("following interrupted")?;
 4198                        state.active_view_id = response
 4199                            .active_view
 4200                            .as_ref()
 4201                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4202                        anyhow::Ok(())
 4203                    })??;
 4204                    if let Some(view) = response.active_view {
 4205                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4206                    }
 4207                    this.update_in(cx, |this, window, cx| {
 4208                        this.leader_updated(leader_id, window, cx)
 4209                    })?;
 4210                    Ok(())
 4211                }))
 4212            }
 4213            CollaboratorId::Agent => {
 4214                self.leader_updated(leader_id, window, cx)?;
 4215                Some(Task::ready(Ok(())))
 4216            }
 4217        }
 4218    }
 4219
 4220    pub fn follow_next_collaborator(
 4221        &mut self,
 4222        _: &FollowNextCollaborator,
 4223        window: &mut Window,
 4224        cx: &mut Context<Self>,
 4225    ) {
 4226        let collaborators = self.project.read(cx).collaborators();
 4227        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4228            let mut collaborators = collaborators.keys().copied();
 4229            for peer_id in collaborators.by_ref() {
 4230                if CollaboratorId::PeerId(peer_id) == leader_id {
 4231                    break;
 4232                }
 4233            }
 4234            collaborators.next().map(CollaboratorId::PeerId)
 4235        } else if let Some(last_leader_id) =
 4236            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4237        {
 4238            match last_leader_id {
 4239                CollaboratorId::PeerId(peer_id) => {
 4240                    if collaborators.contains_key(peer_id) {
 4241                        Some(*last_leader_id)
 4242                    } else {
 4243                        None
 4244                    }
 4245                }
 4246                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4247            }
 4248        } else {
 4249            None
 4250        };
 4251
 4252        let pane = self.active_pane.clone();
 4253        let Some(leader_id) = next_leader_id.or_else(|| {
 4254            Some(CollaboratorId::PeerId(
 4255                collaborators.keys().copied().next()?,
 4256            ))
 4257        }) else {
 4258            return;
 4259        };
 4260        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4261            return;
 4262        }
 4263        if let Some(task) = self.start_following(leader_id, window, cx) {
 4264            task.detach_and_log_err(cx)
 4265        }
 4266    }
 4267
 4268    pub fn follow(
 4269        &mut self,
 4270        leader_id: impl Into<CollaboratorId>,
 4271        window: &mut Window,
 4272        cx: &mut Context<Self>,
 4273    ) {
 4274        let leader_id = leader_id.into();
 4275
 4276        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4277            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4278                return;
 4279            };
 4280            let room = room.read(cx);
 4281            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4282                return;
 4283            };
 4284
 4285            let project = self.project.read(cx);
 4286
 4287            let other_project_id = match remote_participant.location {
 4288                call::ParticipantLocation::External => None,
 4289                call::ParticipantLocation::UnsharedProject => None,
 4290                call::ParticipantLocation::SharedProject { project_id } => {
 4291                    if Some(project_id) == project.remote_id() {
 4292                        None
 4293                    } else {
 4294                        Some(project_id)
 4295                    }
 4296                }
 4297            };
 4298
 4299            // if they are active in another project, follow there.
 4300            if let Some(project_id) = other_project_id {
 4301                let app_state = self.app_state.clone();
 4302                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4303                    .detach_and_log_err(cx);
 4304            }
 4305        }
 4306
 4307        // if you're already following, find the right pane and focus it.
 4308        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4309            window.focus(&follower_state.pane().focus_handle(cx));
 4310
 4311            return;
 4312        }
 4313
 4314        // Otherwise, follow.
 4315        if let Some(task) = self.start_following(leader_id, window, cx) {
 4316            task.detach_and_log_err(cx)
 4317        }
 4318    }
 4319
 4320    pub fn unfollow(
 4321        &mut self,
 4322        leader_id: impl Into<CollaboratorId>,
 4323        window: &mut Window,
 4324        cx: &mut Context<Self>,
 4325    ) -> Option<()> {
 4326        cx.notify();
 4327
 4328        let leader_id = leader_id.into();
 4329        let state = self.follower_states.remove(&leader_id)?;
 4330        for (_, item) in state.items_by_leader_view_id {
 4331            item.view.set_leader_id(None, window, cx);
 4332        }
 4333
 4334        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4335            let project_id = self.project.read(cx).remote_id();
 4336            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4337            self.app_state
 4338                .client
 4339                .send(proto::Unfollow {
 4340                    room_id,
 4341                    project_id,
 4342                    leader_id: Some(leader_peer_id),
 4343                })
 4344                .log_err();
 4345        }
 4346
 4347        Some(())
 4348    }
 4349
 4350    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4351        self.follower_states.contains_key(&id.into())
 4352    }
 4353
 4354    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4355        cx.emit(Event::ActiveItemChanged);
 4356        let active_entry = self.active_project_path(cx);
 4357        self.project
 4358            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4359
 4360        self.update_window_title(window, cx);
 4361    }
 4362
 4363    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4364        let project = self.project().read(cx);
 4365        let mut title = String::new();
 4366
 4367        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4368            if i > 0 {
 4369                title.push_str(", ");
 4370            }
 4371            title.push_str(name);
 4372        }
 4373
 4374        if title.is_empty() {
 4375            title = "empty project".to_string();
 4376        }
 4377
 4378        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4379            let filename = path
 4380                .path
 4381                .file_name()
 4382                .map(|s| s.to_string_lossy())
 4383                .or_else(|| {
 4384                    Some(Cow::Borrowed(
 4385                        project
 4386                            .worktree_for_id(path.worktree_id, cx)?
 4387                            .read(cx)
 4388                            .root_name(),
 4389                    ))
 4390                });
 4391
 4392            if let Some(filename) = filename {
 4393                title.push_str("");
 4394                title.push_str(filename.as_ref());
 4395            }
 4396        }
 4397
 4398        if project.is_via_collab() {
 4399            title.push_str("");
 4400        } else if project.is_shared() {
 4401            title.push_str("");
 4402        }
 4403
 4404        window.set_window_title(&title);
 4405    }
 4406
 4407    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4408        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4409        if is_edited != self.window_edited {
 4410            self.window_edited = is_edited;
 4411            window.set_window_edited(self.window_edited)
 4412        }
 4413    }
 4414
 4415    fn update_item_dirty_state(
 4416        &mut self,
 4417        item: &dyn ItemHandle,
 4418        window: &mut Window,
 4419        cx: &mut App,
 4420    ) {
 4421        let is_dirty = item.is_dirty(cx);
 4422        let item_id = item.item_id();
 4423        let was_dirty = self.dirty_items.contains_key(&item_id);
 4424        if is_dirty == was_dirty {
 4425            return;
 4426        }
 4427        if was_dirty {
 4428            self.dirty_items.remove(&item_id);
 4429            self.update_window_edited(window, cx);
 4430            return;
 4431        }
 4432        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4433            let s = item.on_release(
 4434                cx,
 4435                Box::new(move |cx| {
 4436                    window_handle
 4437                        .update(cx, |this, window, cx| {
 4438                            this.dirty_items.remove(&item_id);
 4439                            this.update_window_edited(window, cx)
 4440                        })
 4441                        .ok();
 4442                }),
 4443            );
 4444            self.dirty_items.insert(item_id, s);
 4445            self.update_window_edited(window, cx);
 4446        }
 4447    }
 4448
 4449    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4450        if self.notifications.is_empty() {
 4451            None
 4452        } else {
 4453            Some(
 4454                div()
 4455                    .absolute()
 4456                    .right_3()
 4457                    .bottom_3()
 4458                    .w_112()
 4459                    .h_full()
 4460                    .flex()
 4461                    .flex_col()
 4462                    .justify_end()
 4463                    .gap_2()
 4464                    .children(
 4465                        self.notifications
 4466                            .iter()
 4467                            .map(|(_, notification)| notification.clone().into_any()),
 4468                    ),
 4469            )
 4470        }
 4471    }
 4472
 4473    // RPC handlers
 4474
 4475    fn active_view_for_follower(
 4476        &self,
 4477        follower_project_id: Option<u64>,
 4478        window: &mut Window,
 4479        cx: &mut Context<Self>,
 4480    ) -> Option<proto::View> {
 4481        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4482        let item = item?;
 4483        let leader_id = self
 4484            .pane_for(&*item)
 4485            .and_then(|pane| self.leader_for_pane(&pane));
 4486        let leader_peer_id = match leader_id {
 4487            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4488            Some(CollaboratorId::Agent) | None => None,
 4489        };
 4490
 4491        let item_handle = item.to_followable_item_handle(cx)?;
 4492        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4493        let variant = item_handle.to_state_proto(window, cx)?;
 4494
 4495        if item_handle.is_project_item(window, cx)
 4496            && (follower_project_id.is_none()
 4497                || follower_project_id != self.project.read(cx).remote_id())
 4498        {
 4499            return None;
 4500        }
 4501
 4502        Some(proto::View {
 4503            id: id.to_proto(),
 4504            leader_id: leader_peer_id,
 4505            variant: Some(variant),
 4506            panel_id: panel_id.map(|id| id as i32),
 4507        })
 4508    }
 4509
 4510    fn handle_follow(
 4511        &mut self,
 4512        follower_project_id: Option<u64>,
 4513        window: &mut Window,
 4514        cx: &mut Context<Self>,
 4515    ) -> proto::FollowResponse {
 4516        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4517
 4518        cx.notify();
 4519        proto::FollowResponse {
 4520            // TODO: Remove after version 0.145.x stabilizes.
 4521            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4522            views: active_view.iter().cloned().collect(),
 4523            active_view,
 4524        }
 4525    }
 4526
 4527    fn handle_update_followers(
 4528        &mut self,
 4529        leader_id: PeerId,
 4530        message: proto::UpdateFollowers,
 4531        _window: &mut Window,
 4532        _cx: &mut Context<Self>,
 4533    ) {
 4534        self.leader_updates_tx
 4535            .unbounded_send((leader_id, message))
 4536            .ok();
 4537    }
 4538
 4539    async fn process_leader_update(
 4540        this: &WeakEntity<Self>,
 4541        leader_id: PeerId,
 4542        update: proto::UpdateFollowers,
 4543        cx: &mut AsyncWindowContext,
 4544    ) -> Result<()> {
 4545        match update.variant.context("invalid update")? {
 4546            proto::update_followers::Variant::CreateView(view) => {
 4547                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4548                let should_add_view = this.update(cx, |this, _| {
 4549                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4550                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4551                    } else {
 4552                        anyhow::Ok(false)
 4553                    }
 4554                })??;
 4555
 4556                if should_add_view {
 4557                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4558                }
 4559            }
 4560            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4561                let should_add_view = this.update(cx, |this, _| {
 4562                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4563                        state.active_view_id = update_active_view
 4564                            .view
 4565                            .as_ref()
 4566                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4567
 4568                        if state.active_view_id.is_some_and(|view_id| {
 4569                            !state.items_by_leader_view_id.contains_key(&view_id)
 4570                        }) {
 4571                            anyhow::Ok(true)
 4572                        } else {
 4573                            anyhow::Ok(false)
 4574                        }
 4575                    } else {
 4576                        anyhow::Ok(false)
 4577                    }
 4578                })??;
 4579
 4580                if should_add_view {
 4581                    if let Some(view) = update_active_view.view {
 4582                        Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4583                    }
 4584                }
 4585            }
 4586            proto::update_followers::Variant::UpdateView(update_view) => {
 4587                let variant = update_view.variant.context("missing update view variant")?;
 4588                let id = update_view.id.context("missing update view id")?;
 4589                let mut tasks = Vec::new();
 4590                this.update_in(cx, |this, window, cx| {
 4591                    let project = this.project.clone();
 4592                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4593                        let view_id = ViewId::from_proto(id.clone())?;
 4594                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4595                            tasks.push(item.view.apply_update_proto(
 4596                                &project,
 4597                                variant.clone(),
 4598                                window,
 4599                                cx,
 4600                            ));
 4601                        }
 4602                    }
 4603                    anyhow::Ok(())
 4604                })??;
 4605                try_join_all(tasks).await.log_err();
 4606            }
 4607        }
 4608        this.update_in(cx, |this, window, cx| {
 4609            this.leader_updated(leader_id, window, cx)
 4610        })?;
 4611        Ok(())
 4612    }
 4613
 4614    async fn add_view_from_leader(
 4615        this: WeakEntity<Self>,
 4616        leader_id: PeerId,
 4617        view: &proto::View,
 4618        cx: &mut AsyncWindowContext,
 4619    ) -> Result<()> {
 4620        let this = this.upgrade().context("workspace dropped")?;
 4621
 4622        let Some(id) = view.id.clone() else {
 4623            anyhow::bail!("no id for view");
 4624        };
 4625        let id = ViewId::from_proto(id)?;
 4626        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4627
 4628        let pane = this.update(cx, |this, _cx| {
 4629            let state = this
 4630                .follower_states
 4631                .get(&leader_id.into())
 4632                .context("stopped following")?;
 4633            anyhow::Ok(state.pane().clone())
 4634        })??;
 4635        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4636            let client = this.read(cx).client().clone();
 4637            pane.items().find_map(|item| {
 4638                let item = item.to_followable_item_handle(cx)?;
 4639                if item.remote_id(&client, window, cx) == Some(id) {
 4640                    Some(item)
 4641                } else {
 4642                    None
 4643                }
 4644            })
 4645        })?;
 4646        let item = if let Some(existing_item) = existing_item {
 4647            existing_item
 4648        } else {
 4649            let variant = view.variant.clone();
 4650            anyhow::ensure!(variant.is_some(), "missing view variant");
 4651
 4652            let task = cx.update(|window, cx| {
 4653                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4654            })?;
 4655
 4656            let Some(task) = task else {
 4657                anyhow::bail!(
 4658                    "failed to construct view from leader (maybe from a different version of zed?)"
 4659                );
 4660            };
 4661
 4662            let mut new_item = task.await?;
 4663            pane.update_in(cx, |pane, window, cx| {
 4664                let mut item_to_remove = None;
 4665                for (ix, item) in pane.items().enumerate() {
 4666                    if let Some(item) = item.to_followable_item_handle(cx) {
 4667                        match new_item.dedup(item.as_ref(), window, cx) {
 4668                            Some(item::Dedup::KeepExisting) => {
 4669                                new_item =
 4670                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4671                                break;
 4672                            }
 4673                            Some(item::Dedup::ReplaceExisting) => {
 4674                                item_to_remove = Some((ix, item.item_id()));
 4675                                break;
 4676                            }
 4677                            None => {}
 4678                        }
 4679                    }
 4680                }
 4681
 4682                if let Some((ix, id)) = item_to_remove {
 4683                    pane.remove_item(id, false, false, window, cx);
 4684                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4685                }
 4686            })?;
 4687
 4688            new_item
 4689        };
 4690
 4691        this.update_in(cx, |this, window, cx| {
 4692            let state = this.follower_states.get_mut(&leader_id.into())?;
 4693            item.set_leader_id(Some(leader_id.into()), window, cx);
 4694            state.items_by_leader_view_id.insert(
 4695                id,
 4696                FollowerView {
 4697                    view: item,
 4698                    location: panel_id,
 4699                },
 4700            );
 4701
 4702            Some(())
 4703        })?;
 4704
 4705        Ok(())
 4706    }
 4707
 4708    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4709        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4710            return;
 4711        };
 4712
 4713        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4714            let buffer_entity_id = agent_location.buffer.entity_id();
 4715            let view_id = ViewId {
 4716                creator: CollaboratorId::Agent,
 4717                id: buffer_entity_id.as_u64(),
 4718            };
 4719            follower_state.active_view_id = Some(view_id);
 4720
 4721            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4722                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4723                hash_map::Entry::Vacant(entry) => {
 4724                    let existing_view =
 4725                        follower_state
 4726                            .center_pane
 4727                            .read(cx)
 4728                            .items()
 4729                            .find_map(|item| {
 4730                                let item = item.to_followable_item_handle(cx)?;
 4731                                if item.is_singleton(cx)
 4732                                    && item.project_item_model_ids(cx).as_slice()
 4733                                        == [buffer_entity_id]
 4734                                {
 4735                                    Some(item)
 4736                                } else {
 4737                                    None
 4738                                }
 4739                            });
 4740                    let view = existing_view.or_else(|| {
 4741                        agent_location.buffer.upgrade().and_then(|buffer| {
 4742                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4743                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4744                            })?
 4745                            .to_followable_item_handle(cx)
 4746                        })
 4747                    });
 4748
 4749                    if let Some(view) = view {
 4750                        Some(entry.insert(FollowerView {
 4751                            view,
 4752                            location: None,
 4753                        }))
 4754                    } else {
 4755                        None
 4756                    }
 4757                }
 4758            };
 4759
 4760            if let Some(item) = item {
 4761                item.view
 4762                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4763                item.view
 4764                    .update_agent_location(agent_location.position, window, cx);
 4765            }
 4766        } else {
 4767            follower_state.active_view_id = None;
 4768        }
 4769
 4770        self.leader_updated(CollaboratorId::Agent, window, cx);
 4771    }
 4772
 4773    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4774        let mut is_project_item = true;
 4775        let mut update = proto::UpdateActiveView::default();
 4776        if window.is_window_active() {
 4777            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4778
 4779            if let Some(item) = active_item {
 4780                if item.item_focus_handle(cx).contains_focused(window, cx) {
 4781                    let leader_id = self
 4782                        .pane_for(&*item)
 4783                        .and_then(|pane| self.leader_for_pane(&pane));
 4784                    let leader_peer_id = match leader_id {
 4785                        Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4786                        Some(CollaboratorId::Agent) | None => None,
 4787                    };
 4788
 4789                    if let Some(item) = item.to_followable_item_handle(cx) {
 4790                        let id = item
 4791                            .remote_id(&self.app_state.client, window, cx)
 4792                            .map(|id| id.to_proto());
 4793
 4794                        if let Some(id) = id.clone() {
 4795                            if let Some(variant) = item.to_state_proto(window, cx) {
 4796                                let view = Some(proto::View {
 4797                                    id: id.clone(),
 4798                                    leader_id: leader_peer_id,
 4799                                    variant: Some(variant),
 4800                                    panel_id: panel_id.map(|id| id as i32),
 4801                                });
 4802
 4803                                is_project_item = item.is_project_item(window, cx);
 4804                                update = proto::UpdateActiveView {
 4805                                    view,
 4806                                    // TODO: Remove after version 0.145.x stabilizes.
 4807                                    id: id.clone(),
 4808                                    leader_id: leader_peer_id,
 4809                                };
 4810                            }
 4811                        };
 4812                    }
 4813                }
 4814            }
 4815        }
 4816
 4817        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4818        if active_view_id != self.last_active_view_id.as_ref() {
 4819            self.last_active_view_id = active_view_id.cloned();
 4820            self.update_followers(
 4821                is_project_item,
 4822                proto::update_followers::Variant::UpdateActiveView(update),
 4823                window,
 4824                cx,
 4825            );
 4826        }
 4827    }
 4828
 4829    fn active_item_for_followers(
 4830        &self,
 4831        window: &mut Window,
 4832        cx: &mut App,
 4833    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4834        let mut active_item = None;
 4835        let mut panel_id = None;
 4836        for dock in self.all_docks() {
 4837            if dock.focus_handle(cx).contains_focused(window, cx) {
 4838                if let Some(panel) = dock.read(cx).active_panel() {
 4839                    if let Some(pane) = panel.pane(cx) {
 4840                        if let Some(item) = pane.read(cx).active_item() {
 4841                            active_item = Some(item);
 4842                            panel_id = panel.remote_id();
 4843                            break;
 4844                        }
 4845                    }
 4846                }
 4847            }
 4848        }
 4849
 4850        if active_item.is_none() {
 4851            active_item = self.active_pane().read(cx).active_item();
 4852        }
 4853        (active_item, panel_id)
 4854    }
 4855
 4856    fn update_followers(
 4857        &self,
 4858        project_only: bool,
 4859        update: proto::update_followers::Variant,
 4860        _: &mut Window,
 4861        cx: &mut App,
 4862    ) -> Option<()> {
 4863        // If this update only applies to for followers in the current project,
 4864        // then skip it unless this project is shared. If it applies to all
 4865        // followers, regardless of project, then set `project_id` to none,
 4866        // indicating that it goes to all followers.
 4867        let project_id = if project_only {
 4868            Some(self.project.read(cx).remote_id()?)
 4869        } else {
 4870            None
 4871        };
 4872        self.app_state().workspace_store.update(cx, |store, cx| {
 4873            store.update_followers(project_id, update, cx)
 4874        })
 4875    }
 4876
 4877    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4878        self.follower_states.iter().find_map(|(leader_id, state)| {
 4879            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4880                Some(*leader_id)
 4881            } else {
 4882                None
 4883            }
 4884        })
 4885    }
 4886
 4887    fn leader_updated(
 4888        &mut self,
 4889        leader_id: impl Into<CollaboratorId>,
 4890        window: &mut Window,
 4891        cx: &mut Context<Self>,
 4892    ) -> Option<Box<dyn ItemHandle>> {
 4893        cx.notify();
 4894
 4895        let leader_id = leader_id.into();
 4896        let (panel_id, item) = match leader_id {
 4897            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4898            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4899        };
 4900
 4901        let state = self.follower_states.get(&leader_id)?;
 4902        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4903        let pane;
 4904        if let Some(panel_id) = panel_id {
 4905            pane = self
 4906                .activate_panel_for_proto_id(panel_id, window, cx)?
 4907                .pane(cx)?;
 4908            let state = self.follower_states.get_mut(&leader_id)?;
 4909            state.dock_pane = Some(pane.clone());
 4910        } else {
 4911            pane = state.center_pane.clone();
 4912            let state = self.follower_states.get_mut(&leader_id)?;
 4913            if let Some(dock_pane) = state.dock_pane.take() {
 4914                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4915            }
 4916        }
 4917
 4918        pane.update(cx, |pane, cx| {
 4919            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4920            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4921                pane.activate_item(index, false, false, window, cx);
 4922            } else {
 4923                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4924            }
 4925
 4926            if focus_active_item {
 4927                pane.focus_active_item(window, cx)
 4928            }
 4929        });
 4930
 4931        Some(item)
 4932    }
 4933
 4934    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4935        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4936        let active_view_id = state.active_view_id?;
 4937        Some(
 4938            state
 4939                .items_by_leader_view_id
 4940                .get(&active_view_id)?
 4941                .view
 4942                .boxed_clone(),
 4943        )
 4944    }
 4945
 4946    fn active_item_for_peer(
 4947        &self,
 4948        peer_id: PeerId,
 4949        window: &mut Window,
 4950        cx: &mut Context<Self>,
 4951    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4952        let call = self.active_call()?;
 4953        let room = call.read(cx).room()?.read(cx);
 4954        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4955        let leader_in_this_app;
 4956        let leader_in_this_project;
 4957        match participant.location {
 4958            call::ParticipantLocation::SharedProject { project_id } => {
 4959                leader_in_this_app = true;
 4960                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4961            }
 4962            call::ParticipantLocation::UnsharedProject => {
 4963                leader_in_this_app = true;
 4964                leader_in_this_project = false;
 4965            }
 4966            call::ParticipantLocation::External => {
 4967                leader_in_this_app = false;
 4968                leader_in_this_project = false;
 4969            }
 4970        };
 4971        let state = self.follower_states.get(&peer_id.into())?;
 4972        let mut item_to_activate = None;
 4973        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 4974            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id) {
 4975                if leader_in_this_project || !item.view.is_project_item(window, cx) {
 4976                    item_to_activate = Some((item.location, item.view.boxed_clone()));
 4977                }
 4978            }
 4979        } else if let Some(shared_screen) =
 4980            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 4981        {
 4982            item_to_activate = Some((None, Box::new(shared_screen)));
 4983        }
 4984        item_to_activate
 4985    }
 4986
 4987    fn shared_screen_for_peer(
 4988        &self,
 4989        peer_id: PeerId,
 4990        pane: &Entity<Pane>,
 4991        window: &mut Window,
 4992        cx: &mut App,
 4993    ) -> Option<Entity<SharedScreen>> {
 4994        let call = self.active_call()?;
 4995        let room = call.read(cx).room()?.clone();
 4996        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 4997        let track = participant.video_tracks.values().next()?.clone();
 4998        let user = participant.user.clone();
 4999
 5000        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5001            if item.read(cx).peer_id == peer_id {
 5002                return Some(item);
 5003            }
 5004        }
 5005
 5006        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5007    }
 5008
 5009    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5010        if window.is_window_active() {
 5011            self.update_active_view_for_followers(window, cx);
 5012
 5013            if let Some(database_id) = self.database_id {
 5014                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5015                    .detach();
 5016            }
 5017        } else {
 5018            for pane in &self.panes {
 5019                pane.update(cx, |pane, cx| {
 5020                    if let Some(item) = pane.active_item() {
 5021                        item.workspace_deactivated(window, cx);
 5022                    }
 5023                    for item in pane.items() {
 5024                        if matches!(
 5025                            item.workspace_settings(cx).autosave,
 5026                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5027                        ) {
 5028                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5029                                .detach_and_log_err(cx);
 5030                        }
 5031                    }
 5032                });
 5033            }
 5034        }
 5035    }
 5036
 5037    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5038        self.active_call.as_ref().map(|(call, _)| call)
 5039    }
 5040
 5041    fn on_active_call_event(
 5042        &mut self,
 5043        _: &Entity<ActiveCall>,
 5044        event: &call::room::Event,
 5045        window: &mut Window,
 5046        cx: &mut Context<Self>,
 5047    ) {
 5048        match event {
 5049            call::room::Event::ParticipantLocationChanged { participant_id }
 5050            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5051                self.leader_updated(participant_id, window, cx);
 5052            }
 5053            _ => {}
 5054        }
 5055    }
 5056
 5057    pub fn database_id(&self) -> Option<WorkspaceId> {
 5058        self.database_id
 5059    }
 5060
 5061    pub fn session_id(&self) -> Option<String> {
 5062        self.session_id.clone()
 5063    }
 5064
 5065    fn local_paths(&self, cx: &App) -> Option<Vec<Arc<Path>>> {
 5066        let project = self.project().read(cx);
 5067
 5068        if project.is_local() {
 5069            Some(
 5070                project
 5071                    .visible_worktrees(cx)
 5072                    .map(|worktree| worktree.read(cx).abs_path())
 5073                    .collect::<Vec<_>>(),
 5074            )
 5075        } else {
 5076            None
 5077        }
 5078    }
 5079
 5080    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5081        match member {
 5082            Member::Axis(PaneAxis { members, .. }) => {
 5083                for child in members.iter() {
 5084                    self.remove_panes(child.clone(), window, cx)
 5085                }
 5086            }
 5087            Member::Pane(pane) => {
 5088                self.force_remove_pane(&pane, &None, window, cx);
 5089            }
 5090        }
 5091    }
 5092
 5093    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5094        self.session_id.take();
 5095        self.serialize_workspace_internal(window, cx)
 5096    }
 5097
 5098    fn force_remove_pane(
 5099        &mut self,
 5100        pane: &Entity<Pane>,
 5101        focus_on: &Option<Entity<Pane>>,
 5102        window: &mut Window,
 5103        cx: &mut Context<Workspace>,
 5104    ) {
 5105        self.panes.retain(|p| p != pane);
 5106        if let Some(focus_on) = focus_on {
 5107            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5108        } else {
 5109            if self.active_pane() == pane {
 5110                self.panes
 5111                    .last()
 5112                    .unwrap()
 5113                    .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5114            }
 5115        }
 5116        if self.last_active_center_pane == Some(pane.downgrade()) {
 5117            self.last_active_center_pane = None;
 5118        }
 5119        cx.notify();
 5120    }
 5121
 5122    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5123        if self._schedule_serialize.is_none() {
 5124            self._schedule_serialize = Some(cx.spawn_in(window, async move |this, cx| {
 5125                cx.background_executor()
 5126                    .timer(Duration::from_millis(100))
 5127                    .await;
 5128                this.update_in(cx, |this, window, cx| {
 5129                    this.serialize_workspace_internal(window, cx).detach();
 5130                    this._schedule_serialize.take();
 5131                })
 5132                .log_err();
 5133            }));
 5134        }
 5135    }
 5136
 5137    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5138        let Some(database_id) = self.database_id() else {
 5139            return Task::ready(());
 5140        };
 5141
 5142        fn serialize_pane_handle(
 5143            pane_handle: &Entity<Pane>,
 5144            window: &mut Window,
 5145            cx: &mut App,
 5146        ) -> SerializedPane {
 5147            let (items, active, pinned_count) = {
 5148                let pane = pane_handle.read(cx);
 5149                let active_item_id = pane.active_item().map(|item| item.item_id());
 5150                (
 5151                    pane.items()
 5152                        .filter_map(|handle| {
 5153                            let handle = handle.to_serializable_item_handle(cx)?;
 5154
 5155                            Some(SerializedItem {
 5156                                kind: Arc::from(handle.serialized_item_kind()),
 5157                                item_id: handle.item_id().as_u64(),
 5158                                active: Some(handle.item_id()) == active_item_id,
 5159                                preview: pane.is_active_preview_item(handle.item_id()),
 5160                            })
 5161                        })
 5162                        .collect::<Vec<_>>(),
 5163                    pane.has_focus(window, cx),
 5164                    pane.pinned_count(),
 5165                )
 5166            };
 5167
 5168            SerializedPane::new(items, active, pinned_count)
 5169        }
 5170
 5171        fn build_serialized_pane_group(
 5172            pane_group: &Member,
 5173            window: &mut Window,
 5174            cx: &mut App,
 5175        ) -> SerializedPaneGroup {
 5176            match pane_group {
 5177                Member::Axis(PaneAxis {
 5178                    axis,
 5179                    members,
 5180                    flexes,
 5181                    bounding_boxes: _,
 5182                }) => SerializedPaneGroup::Group {
 5183                    axis: SerializedAxis(*axis),
 5184                    children: members
 5185                        .iter()
 5186                        .map(|member| build_serialized_pane_group(member, window, cx))
 5187                        .collect::<Vec<_>>(),
 5188                    flexes: Some(flexes.lock().clone()),
 5189                },
 5190                Member::Pane(pane_handle) => {
 5191                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5192                }
 5193            }
 5194        }
 5195
 5196        fn build_serialized_docks(
 5197            this: &Workspace,
 5198            window: &mut Window,
 5199            cx: &mut App,
 5200        ) -> DockStructure {
 5201            let left_dock = this.left_dock.read(cx);
 5202            let left_visible = left_dock.is_open();
 5203            let left_active_panel = left_dock
 5204                .active_panel()
 5205                .map(|panel| panel.persistent_name().to_string());
 5206            let left_dock_zoom = left_dock
 5207                .active_panel()
 5208                .map(|panel| panel.is_zoomed(window, cx))
 5209                .unwrap_or(false);
 5210
 5211            let right_dock = this.right_dock.read(cx);
 5212            let right_visible = right_dock.is_open();
 5213            let right_active_panel = right_dock
 5214                .active_panel()
 5215                .map(|panel| panel.persistent_name().to_string());
 5216            let right_dock_zoom = right_dock
 5217                .active_panel()
 5218                .map(|panel| panel.is_zoomed(window, cx))
 5219                .unwrap_or(false);
 5220
 5221            let bottom_dock = this.bottom_dock.read(cx);
 5222            let bottom_visible = bottom_dock.is_open();
 5223            let bottom_active_panel = bottom_dock
 5224                .active_panel()
 5225                .map(|panel| panel.persistent_name().to_string());
 5226            let bottom_dock_zoom = bottom_dock
 5227                .active_panel()
 5228                .map(|panel| panel.is_zoomed(window, cx))
 5229                .unwrap_or(false);
 5230
 5231            DockStructure {
 5232                left: DockData {
 5233                    visible: left_visible,
 5234                    active_panel: left_active_panel,
 5235                    zoom: left_dock_zoom,
 5236                },
 5237                right: DockData {
 5238                    visible: right_visible,
 5239                    active_panel: right_active_panel,
 5240                    zoom: right_dock_zoom,
 5241                },
 5242                bottom: DockData {
 5243                    visible: bottom_visible,
 5244                    active_panel: bottom_active_panel,
 5245                    zoom: bottom_dock_zoom,
 5246                },
 5247            }
 5248        }
 5249
 5250        match self.serialize_workspace_location(cx) {
 5251            WorkspaceLocation::Location(location) => {
 5252                let breakpoints = self.project.update(cx, |project, cx| {
 5253                    project
 5254                        .breakpoint_store()
 5255                        .read(cx)
 5256                        .all_source_breakpoints(cx)
 5257                });
 5258
 5259                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5260                let docks = build_serialized_docks(self, window, cx);
 5261                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5262                let serialized_workspace = SerializedWorkspace {
 5263                    id: database_id,
 5264                    location,
 5265                    center_group,
 5266                    window_bounds,
 5267                    display: Default::default(),
 5268                    docks,
 5269                    centered_layout: self.centered_layout,
 5270                    session_id: self.session_id.clone(),
 5271                    breakpoints,
 5272                    window_id: Some(window.window_handle().window_id().as_u64()),
 5273                };
 5274
 5275                window.spawn(cx, async move |_| {
 5276                    persistence::DB.save_workspace(serialized_workspace).await;
 5277                })
 5278            }
 5279            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5280                persistence::DB
 5281                    .set_session_id(database_id, None)
 5282                    .await
 5283                    .log_err();
 5284            }),
 5285            WorkspaceLocation::None => Task::ready(()),
 5286        }
 5287    }
 5288
 5289    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5290        if let Some(ssh_project) = &self.serialized_ssh_project {
 5291            WorkspaceLocation::Location(SerializedWorkspaceLocation::Ssh(ssh_project.clone()))
 5292        } else if let Some(local_paths) = self.local_paths(cx) {
 5293            if !local_paths.is_empty() {
 5294                WorkspaceLocation::Location(SerializedWorkspaceLocation::from_local_paths(
 5295                    local_paths,
 5296                ))
 5297            } else {
 5298                WorkspaceLocation::DetachFromSession
 5299            }
 5300        } else {
 5301            WorkspaceLocation::None
 5302        }
 5303    }
 5304
 5305    fn update_history(&self, cx: &mut App) {
 5306        let Some(id) = self.database_id() else {
 5307            return;
 5308        };
 5309        let location = match self.serialize_workspace_location(cx) {
 5310            WorkspaceLocation::Location(location) => location,
 5311            _ => return,
 5312        };
 5313        if let Some(manager) = HistoryManager::global(cx) {
 5314            manager.update(cx, |this, cx| {
 5315                this.update_history(id, HistoryManagerEntry::new(id, &location), cx);
 5316            });
 5317        }
 5318    }
 5319
 5320    async fn serialize_items(
 5321        this: &WeakEntity<Self>,
 5322        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5323        cx: &mut AsyncWindowContext,
 5324    ) -> Result<()> {
 5325        const CHUNK_SIZE: usize = 200;
 5326
 5327        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5328
 5329        while let Some(items_received) = serializable_items.next().await {
 5330            let unique_items =
 5331                items_received
 5332                    .into_iter()
 5333                    .fold(HashMap::default(), |mut acc, item| {
 5334                        acc.entry(item.item_id()).or_insert(item);
 5335                        acc
 5336                    });
 5337
 5338            // We use into_iter() here so that the references to the items are moved into
 5339            // the tasks and not kept alive while we're sleeping.
 5340            for (_, item) in unique_items.into_iter() {
 5341                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5342                    item.serialize(workspace, false, window, cx)
 5343                }) {
 5344                    cx.background_spawn(async move { task.await.log_err() })
 5345                        .detach();
 5346                }
 5347            }
 5348
 5349            cx.background_executor()
 5350                .timer(SERIALIZATION_THROTTLE_TIME)
 5351                .await;
 5352        }
 5353
 5354        Ok(())
 5355    }
 5356
 5357    pub(crate) fn enqueue_item_serialization(
 5358        &mut self,
 5359        item: Box<dyn SerializableItemHandle>,
 5360    ) -> Result<()> {
 5361        self.serializable_items_tx
 5362            .unbounded_send(item)
 5363            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5364    }
 5365
 5366    pub(crate) fn load_workspace(
 5367        serialized_workspace: SerializedWorkspace,
 5368        paths_to_open: Vec<Option<ProjectPath>>,
 5369        window: &mut Window,
 5370        cx: &mut Context<Workspace>,
 5371    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5372        cx.spawn_in(window, async move |workspace, cx| {
 5373            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5374
 5375            let mut center_group = None;
 5376            let mut center_items = None;
 5377
 5378            // Traverse the splits tree and add to things
 5379            if let Some((group, active_pane, items)) = serialized_workspace
 5380                .center_group
 5381                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5382                .await
 5383            {
 5384                center_items = Some(items);
 5385                center_group = Some((group, active_pane))
 5386            }
 5387
 5388            let mut items_by_project_path = HashMap::default();
 5389            let mut item_ids_by_kind = HashMap::default();
 5390            let mut all_deserialized_items = Vec::default();
 5391            cx.update(|_, cx| {
 5392                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5393                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5394                        item_ids_by_kind
 5395                            .entry(serializable_item_handle.serialized_item_kind())
 5396                            .or_insert(Vec::new())
 5397                            .push(item.item_id().as_u64() as ItemId);
 5398                    }
 5399
 5400                    if let Some(project_path) = item.project_path(cx) {
 5401                        items_by_project_path.insert(project_path, item.clone());
 5402                    }
 5403                    all_deserialized_items.push(item);
 5404                }
 5405            })?;
 5406
 5407            let opened_items = paths_to_open
 5408                .into_iter()
 5409                .map(|path_to_open| {
 5410                    path_to_open
 5411                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5412                })
 5413                .collect::<Vec<_>>();
 5414
 5415            // Remove old panes from workspace panes list
 5416            workspace.update_in(cx, |workspace, window, cx| {
 5417                if let Some((center_group, active_pane)) = center_group {
 5418                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5419
 5420                    // Swap workspace center group
 5421                    workspace.center = PaneGroup::with_root(center_group);
 5422                    if let Some(active_pane) = active_pane {
 5423                        workspace.set_active_pane(&active_pane, window, cx);
 5424                        cx.focus_self(window);
 5425                    } else {
 5426                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5427                    }
 5428                }
 5429
 5430                let docks = serialized_workspace.docks;
 5431
 5432                for (dock, serialized_dock) in [
 5433                    (&mut workspace.right_dock, docks.right),
 5434                    (&mut workspace.left_dock, docks.left),
 5435                    (&mut workspace.bottom_dock, docks.bottom),
 5436                ]
 5437                .iter_mut()
 5438                {
 5439                    dock.update(cx, |dock, cx| {
 5440                        dock.serialized_dock = Some(serialized_dock.clone());
 5441                        dock.restore_state(window, cx);
 5442                    });
 5443                }
 5444
 5445                cx.notify();
 5446            })?;
 5447
 5448            let _ = project
 5449                .update(cx, |project, cx| {
 5450                    project
 5451                        .breakpoint_store()
 5452                        .update(cx, |breakpoint_store, cx| {
 5453                            breakpoint_store
 5454                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5455                        })
 5456                })?
 5457                .await;
 5458
 5459            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5460            // after loading the items, we might have different items and in order to avoid
 5461            // the database filling up, we delete items that haven't been loaded now.
 5462            //
 5463            // The items that have been loaded, have been saved after they've been added to the workspace.
 5464            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5465                item_ids_by_kind
 5466                    .into_iter()
 5467                    .map(|(item_kind, loaded_items)| {
 5468                        SerializableItemRegistry::cleanup(
 5469                            item_kind,
 5470                            serialized_workspace.id,
 5471                            loaded_items,
 5472                            window,
 5473                            cx,
 5474                        )
 5475                        .log_err()
 5476                    })
 5477                    .collect::<Vec<_>>()
 5478            })?;
 5479
 5480            futures::future::join_all(clean_up_tasks).await;
 5481
 5482            workspace
 5483                .update_in(cx, |workspace, window, cx| {
 5484                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5485                    workspace.serialize_workspace_internal(window, cx).detach();
 5486
 5487                    // Ensure that we mark the window as edited if we did load dirty items
 5488                    workspace.update_window_edited(window, cx);
 5489                })
 5490                .ok();
 5491
 5492            Ok(opened_items)
 5493        })
 5494    }
 5495
 5496    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5497        self.add_workspace_actions_listeners(div, window, cx)
 5498            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5499            .on_action(cx.listener(Self::close_all_items_and_panes))
 5500            .on_action(cx.listener(Self::save_all))
 5501            .on_action(cx.listener(Self::send_keystrokes))
 5502            .on_action(cx.listener(Self::add_folder_to_project))
 5503            .on_action(cx.listener(Self::follow_next_collaborator))
 5504            .on_action(cx.listener(Self::close_window))
 5505            .on_action(cx.listener(Self::activate_pane_at_index))
 5506            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5507            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5508            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5509                let pane = workspace.active_pane().clone();
 5510                workspace.unfollow_in_pane(&pane, window, cx);
 5511            }))
 5512            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5513                workspace
 5514                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5515                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5516            }))
 5517            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5518                workspace
 5519                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5520                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5521            }))
 5522            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5523                workspace
 5524                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5525                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5526            }))
 5527            .on_action(
 5528                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5529                    workspace.activate_previous_pane(window, cx)
 5530                }),
 5531            )
 5532            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5533                workspace.activate_next_pane(window, cx)
 5534            }))
 5535            .on_action(
 5536                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5537                    workspace.activate_next_window(cx)
 5538                }),
 5539            )
 5540            .on_action(
 5541                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5542                    workspace.activate_previous_window(cx)
 5543                }),
 5544            )
 5545            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5546                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5547            }))
 5548            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5549                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5550            }))
 5551            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5552                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5553            }))
 5554            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5555                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5556            }))
 5557            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5558                workspace.activate_next_pane(window, cx)
 5559            }))
 5560            .on_action(cx.listener(
 5561                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5562                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5563                },
 5564            ))
 5565            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5566                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5567            }))
 5568            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5569                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5570            }))
 5571            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5572                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5573            }))
 5574            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5575                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5576            }))
 5577            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5578                this.toggle_dock(DockPosition::Left, window, cx);
 5579            }))
 5580            .on_action(cx.listener(
 5581                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5582                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5583                },
 5584            ))
 5585            .on_action(cx.listener(
 5586                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5587                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5588                },
 5589            ))
 5590            .on_action(cx.listener(
 5591                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5592                    if !workspace.close_active_dock(window, cx) {
 5593                        cx.propagate();
 5594                    }
 5595                },
 5596            ))
 5597            .on_action(
 5598                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5599                    workspace.close_all_docks(window, cx);
 5600                }),
 5601            )
 5602            .on_action(cx.listener(
 5603                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5604                    workspace.clear_all_notifications(cx);
 5605                },
 5606            ))
 5607            .on_action(cx.listener(
 5608                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5609                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5610                        workspace.suppress_notification(&notification_id, cx);
 5611                    }
 5612                },
 5613            ))
 5614            .on_action(cx.listener(
 5615                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5616                    workspace.reopen_closed_item(window, cx).detach();
 5617                },
 5618            ))
 5619            .on_action(cx.listener(
 5620                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5621                    for dock in workspace.all_docks() {
 5622                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5623                            let Some(panel) = dock.read(cx).active_panel() else {
 5624                                return;
 5625                            };
 5626
 5627                            // Set to `None`, then the size will fall back to the default.
 5628                            panel.clone().set_size(None, window, cx);
 5629
 5630                            return;
 5631                        }
 5632                    }
 5633                },
 5634            ))
 5635            .on_action(cx.listener(
 5636                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5637                    for dock in workspace.all_docks() {
 5638                        if let Some(panel) = dock.read(cx).visible_panel() {
 5639                            // Set to `None`, then the size will fall back to the default.
 5640                            panel.clone().set_size(None, window, cx);
 5641                        }
 5642                    }
 5643                },
 5644            ))
 5645            .on_action(cx.listener(
 5646                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5647                    adjust_active_dock_size_by_px(
 5648                        px_with_ui_font_fallback(act.px, cx),
 5649                        workspace,
 5650                        window,
 5651                        cx,
 5652                    );
 5653                },
 5654            ))
 5655            .on_action(cx.listener(
 5656                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5657                    adjust_active_dock_size_by_px(
 5658                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5659                        workspace,
 5660                        window,
 5661                        cx,
 5662                    );
 5663                },
 5664            ))
 5665            .on_action(cx.listener(
 5666                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5667                    adjust_open_docks_size_by_px(
 5668                        px_with_ui_font_fallback(act.px, cx),
 5669                        workspace,
 5670                        window,
 5671                        cx,
 5672                    );
 5673                },
 5674            ))
 5675            .on_action(cx.listener(
 5676                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5677                    adjust_open_docks_size_by_px(
 5678                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5679                        workspace,
 5680                        window,
 5681                        cx,
 5682                    );
 5683                },
 5684            ))
 5685            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5686            .on_action(cx.listener(Workspace::cancel))
 5687    }
 5688
 5689    #[cfg(any(test, feature = "test-support"))]
 5690    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5691        use node_runtime::NodeRuntime;
 5692        use session::Session;
 5693
 5694        let client = project.read(cx).client();
 5695        let user_store = project.read(cx).user_store();
 5696        let cloud_user_store = cx.new(|cx| CloudUserStore::new(client.cloud_client(), cx));
 5697
 5698        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5699        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5700        window.activate_window();
 5701        let app_state = Arc::new(AppState {
 5702            languages: project.read(cx).languages().clone(),
 5703            workspace_store,
 5704            cloud_user_store,
 5705            client,
 5706            user_store,
 5707            fs: project.read(cx).fs().clone(),
 5708            build_window_options: |_, _| Default::default(),
 5709            node_runtime: NodeRuntime::unavailable(),
 5710            session,
 5711        });
 5712        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5713        workspace
 5714            .active_pane
 5715            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5716        workspace
 5717    }
 5718
 5719    pub fn register_action<A: Action>(
 5720        &mut self,
 5721        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5722    ) -> &mut Self {
 5723        let callback = Arc::new(callback);
 5724
 5725        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5726            let callback = callback.clone();
 5727            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5728                (callback)(workspace, event, window, cx)
 5729            }))
 5730        }));
 5731        self
 5732    }
 5733    pub fn register_action_renderer(
 5734        &mut self,
 5735        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5736    ) -> &mut Self {
 5737        self.workspace_actions.push(Box::new(callback));
 5738        self
 5739    }
 5740
 5741    fn add_workspace_actions_listeners(
 5742        &self,
 5743        mut div: Div,
 5744        window: &mut Window,
 5745        cx: &mut Context<Self>,
 5746    ) -> Div {
 5747        for action in self.workspace_actions.iter() {
 5748            div = (action)(div, self, window, cx)
 5749        }
 5750        div
 5751    }
 5752
 5753    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5754        self.modal_layer.read(cx).has_active_modal()
 5755    }
 5756
 5757    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5758        self.modal_layer.read(cx).active_modal()
 5759    }
 5760
 5761    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5762    where
 5763        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5764    {
 5765        self.modal_layer.update(cx, |modal_layer, cx| {
 5766            modal_layer.toggle_modal(window, cx, build)
 5767        })
 5768    }
 5769
 5770    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5771        self.toast_layer
 5772            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5773    }
 5774
 5775    pub fn toggle_centered_layout(
 5776        &mut self,
 5777        _: &ToggleCenteredLayout,
 5778        _: &mut Window,
 5779        cx: &mut Context<Self>,
 5780    ) {
 5781        self.centered_layout = !self.centered_layout;
 5782        if let Some(database_id) = self.database_id() {
 5783            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5784                .detach_and_log_err(cx);
 5785        }
 5786        cx.notify();
 5787    }
 5788
 5789    fn adjust_padding(padding: Option<f32>) -> f32 {
 5790        padding
 5791            .unwrap_or(Self::DEFAULT_PADDING)
 5792            .clamp(0.0, Self::MAX_PADDING)
 5793    }
 5794
 5795    fn render_dock(
 5796        &self,
 5797        position: DockPosition,
 5798        dock: &Entity<Dock>,
 5799        window: &mut Window,
 5800        cx: &mut App,
 5801    ) -> Option<Div> {
 5802        if self.zoomed_position == Some(position) {
 5803            return None;
 5804        }
 5805
 5806        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5807            let pane = panel.pane(cx)?;
 5808            let follower_states = &self.follower_states;
 5809            leader_border_for_pane(follower_states, &pane, window, cx)
 5810        });
 5811
 5812        Some(
 5813            div()
 5814                .flex()
 5815                .flex_none()
 5816                .overflow_hidden()
 5817                .child(dock.clone())
 5818                .children(leader_border),
 5819        )
 5820    }
 5821
 5822    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5823        window.root().flatten()
 5824    }
 5825
 5826    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5827        self.zoomed.as_ref()
 5828    }
 5829
 5830    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5831        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5832            return;
 5833        };
 5834        let windows = cx.windows();
 5835        let Some(next_window) = windows
 5836            .iter()
 5837            .cycle()
 5838            .skip_while(|window| window.window_id() != current_window_id)
 5839            .nth(1)
 5840        else {
 5841            return;
 5842        };
 5843        next_window
 5844            .update(cx, |_, window, _| window.activate_window())
 5845            .ok();
 5846    }
 5847
 5848    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5849        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5850            return;
 5851        };
 5852        let windows = cx.windows();
 5853        let Some(prev_window) = windows
 5854            .iter()
 5855            .rev()
 5856            .cycle()
 5857            .skip_while(|window| window.window_id() != current_window_id)
 5858            .nth(1)
 5859        else {
 5860            return;
 5861        };
 5862        prev_window
 5863            .update(cx, |_, window, _| window.activate_window())
 5864            .ok();
 5865    }
 5866
 5867    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5868        if cx.stop_active_drag(window) {
 5869            return;
 5870        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5871            dismiss_app_notification(&notification_id, cx);
 5872        } else {
 5873            cx.propagate();
 5874        }
 5875    }
 5876
 5877    fn adjust_dock_size_by_px(
 5878        &mut self,
 5879        panel_size: Pixels,
 5880        dock_pos: DockPosition,
 5881        px: Pixels,
 5882        window: &mut Window,
 5883        cx: &mut Context<Self>,
 5884    ) {
 5885        match dock_pos {
 5886            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5887            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5888            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5889        }
 5890    }
 5891
 5892    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5893        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5894
 5895        self.left_dock.update(cx, |left_dock, cx| {
 5896            if WorkspaceSettings::get_global(cx)
 5897                .resize_all_panels_in_dock
 5898                .contains(&DockPosition::Left)
 5899            {
 5900                left_dock.resize_all_panels(Some(size), window, cx);
 5901            } else {
 5902                left_dock.resize_active_panel(Some(size), window, cx);
 5903            }
 5904        });
 5905    }
 5906
 5907    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5908        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5909        self.left_dock.read_with(cx, |left_dock, cx| {
 5910            let left_dock_size = left_dock
 5911                .active_panel_size(window, cx)
 5912                .unwrap_or(Pixels(0.0));
 5913            if left_dock_size + size > self.bounds.right() {
 5914                size = self.bounds.right() - left_dock_size
 5915            }
 5916        });
 5917        self.right_dock.update(cx, |right_dock, cx| {
 5918            if WorkspaceSettings::get_global(cx)
 5919                .resize_all_panels_in_dock
 5920                .contains(&DockPosition::Right)
 5921            {
 5922                right_dock.resize_all_panels(Some(size), window, cx);
 5923            } else {
 5924                right_dock.resize_active_panel(Some(size), window, cx);
 5925            }
 5926        });
 5927    }
 5928
 5929    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5930        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5931        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5932            if WorkspaceSettings::get_global(cx)
 5933                .resize_all_panels_in_dock
 5934                .contains(&DockPosition::Bottom)
 5935            {
 5936                bottom_dock.resize_all_panels(Some(size), window, cx);
 5937            } else {
 5938                bottom_dock.resize_active_panel(Some(size), window, cx);
 5939            }
 5940        });
 5941    }
 5942}
 5943
 5944fn leader_border_for_pane(
 5945    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5946    pane: &Entity<Pane>,
 5947    _: &Window,
 5948    cx: &App,
 5949) -> Option<Div> {
 5950    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 5951        if state.pane() == pane {
 5952            Some((*leader_id, state))
 5953        } else {
 5954            None
 5955        }
 5956    })?;
 5957
 5958    let mut leader_color = match leader_id {
 5959        CollaboratorId::PeerId(leader_peer_id) => {
 5960            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 5961            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 5962
 5963            cx.theme()
 5964                .players()
 5965                .color_for_participant(leader.participant_index.0)
 5966                .cursor
 5967        }
 5968        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 5969    };
 5970    leader_color.fade_out(0.3);
 5971    Some(
 5972        div()
 5973            .absolute()
 5974            .size_full()
 5975            .left_0()
 5976            .top_0()
 5977            .border_2()
 5978            .border_color(leader_color),
 5979    )
 5980}
 5981
 5982fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 5983    ZED_WINDOW_POSITION
 5984        .zip(*ZED_WINDOW_SIZE)
 5985        .map(|(position, size)| Bounds {
 5986            origin: position,
 5987            size,
 5988        })
 5989}
 5990
 5991fn open_items(
 5992    serialized_workspace: Option<SerializedWorkspace>,
 5993    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 5994    window: &mut Window,
 5995    cx: &mut Context<Workspace>,
 5996) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 5997    let restored_items = serialized_workspace.map(|serialized_workspace| {
 5998        Workspace::load_workspace(
 5999            serialized_workspace,
 6000            project_paths_to_open
 6001                .iter()
 6002                .map(|(_, project_path)| project_path)
 6003                .cloned()
 6004                .collect(),
 6005            window,
 6006            cx,
 6007        )
 6008    });
 6009
 6010    cx.spawn_in(window, async move |workspace, cx| {
 6011        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6012
 6013        if let Some(restored_items) = restored_items {
 6014            let restored_items = restored_items.await?;
 6015
 6016            let restored_project_paths = restored_items
 6017                .iter()
 6018                .filter_map(|item| {
 6019                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6020                        .ok()
 6021                        .flatten()
 6022                })
 6023                .collect::<HashSet<_>>();
 6024
 6025            for restored_item in restored_items {
 6026                opened_items.push(restored_item.map(Ok));
 6027            }
 6028
 6029            project_paths_to_open
 6030                .iter_mut()
 6031                .for_each(|(_, project_path)| {
 6032                    if let Some(project_path_to_open) = project_path {
 6033                        if restored_project_paths.contains(project_path_to_open) {
 6034                            *project_path = None;
 6035                        }
 6036                    }
 6037                });
 6038        } else {
 6039            for _ in 0..project_paths_to_open.len() {
 6040                opened_items.push(None);
 6041            }
 6042        }
 6043        assert!(opened_items.len() == project_paths_to_open.len());
 6044
 6045        let tasks =
 6046            project_paths_to_open
 6047                .into_iter()
 6048                .enumerate()
 6049                .map(|(ix, (abs_path, project_path))| {
 6050                    let workspace = workspace.clone();
 6051                    cx.spawn(async move |cx| {
 6052                        let file_project_path = project_path?;
 6053                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6054                            workspace.project().update(cx, |project, cx| {
 6055                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6056                            })
 6057                        });
 6058
 6059                        // We only want to open file paths here. If one of the items
 6060                        // here is a directory, it was already opened further above
 6061                        // with a `find_or_create_worktree`.
 6062                        if let Ok(task) = abs_path_task {
 6063                            if task.await.map_or(true, |p| p.is_file()) {
 6064                                return Some((
 6065                                    ix,
 6066                                    workspace
 6067                                        .update_in(cx, |workspace, window, cx| {
 6068                                            workspace.open_path(
 6069                                                file_project_path,
 6070                                                None,
 6071                                                true,
 6072                                                window,
 6073                                                cx,
 6074                                            )
 6075                                        })
 6076                                        .log_err()?
 6077                                        .await,
 6078                                ));
 6079                            }
 6080                        }
 6081                        None
 6082                    })
 6083                });
 6084
 6085        let tasks = tasks.collect::<Vec<_>>();
 6086
 6087        let tasks = futures::future::join_all(tasks);
 6088        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6089            opened_items[ix] = Some(path_open_result);
 6090        }
 6091
 6092        Ok(opened_items)
 6093    })
 6094}
 6095
 6096enum ActivateInDirectionTarget {
 6097    Pane(Entity<Pane>),
 6098    Dock(Entity<Dock>),
 6099}
 6100
 6101fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6102    workspace
 6103        .update(cx, |workspace, _, cx| {
 6104            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6105                struct DatabaseFailedNotification;
 6106
 6107                workspace.show_notification(
 6108                    NotificationId::unique::<DatabaseFailedNotification>(),
 6109                    cx,
 6110                    |cx| {
 6111                        cx.new(|cx| {
 6112                            MessageNotification::new("Failed to load the database file.", cx)
 6113                                .primary_message("File an Issue")
 6114                                .primary_icon(IconName::Plus)
 6115                                .primary_on_click(|window, cx| {
 6116                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6117                                })
 6118                        })
 6119                    },
 6120                );
 6121            }
 6122        })
 6123        .log_err();
 6124}
 6125
 6126fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6127    if val == 0 {
 6128        ThemeSettings::get_global(cx).ui_font_size(cx)
 6129    } else {
 6130        px(val as f32)
 6131    }
 6132}
 6133
 6134fn adjust_active_dock_size_by_px(
 6135    px: Pixels,
 6136    workspace: &mut Workspace,
 6137    window: &mut Window,
 6138    cx: &mut Context<Workspace>,
 6139) {
 6140    let Some(active_dock) = workspace
 6141        .all_docks()
 6142        .into_iter()
 6143        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6144    else {
 6145        return;
 6146    };
 6147    let dock = active_dock.read(cx);
 6148    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6149        return;
 6150    };
 6151    let dock_pos = dock.position();
 6152    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6153}
 6154
 6155fn adjust_open_docks_size_by_px(
 6156    px: Pixels,
 6157    workspace: &mut Workspace,
 6158    window: &mut Window,
 6159    cx: &mut Context<Workspace>,
 6160) {
 6161    let docks = workspace
 6162        .all_docks()
 6163        .into_iter()
 6164        .filter_map(|dock| {
 6165            if dock.read(cx).is_open() {
 6166                let dock = dock.read(cx);
 6167                let panel_size = dock.active_panel_size(window, cx)?;
 6168                let dock_pos = dock.position();
 6169                Some((panel_size, dock_pos, px))
 6170            } else {
 6171                None
 6172            }
 6173        })
 6174        .collect::<Vec<_>>();
 6175
 6176    docks
 6177        .into_iter()
 6178        .for_each(|(panel_size, dock_pos, offset)| {
 6179            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6180        });
 6181}
 6182
 6183impl Focusable for Workspace {
 6184    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6185        self.active_pane.focus_handle(cx)
 6186    }
 6187}
 6188
 6189#[derive(Clone)]
 6190struct DraggedDock(DockPosition);
 6191
 6192impl Render for DraggedDock {
 6193    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6194        gpui::Empty
 6195    }
 6196}
 6197
 6198impl Render for Workspace {
 6199    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6200        let mut context = KeyContext::new_with_defaults();
 6201        context.add("Workspace");
 6202        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6203        if let Some(status) = self
 6204            .debugger_provider
 6205            .as_ref()
 6206            .and_then(|provider| provider.active_thread_state(cx))
 6207        {
 6208            match status {
 6209                ThreadStatus::Running | ThreadStatus::Stepping => {
 6210                    context.add("debugger_running");
 6211                }
 6212                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6213                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6214            }
 6215        }
 6216
 6217        let centered_layout = self.centered_layout
 6218            && self.center.panes().len() == 1
 6219            && self.active_item(cx).is_some();
 6220        let render_padding = |size| {
 6221            (size > 0.0).then(|| {
 6222                div()
 6223                    .h_full()
 6224                    .w(relative(size))
 6225                    .bg(cx.theme().colors().editor_background)
 6226                    .border_color(cx.theme().colors().pane_group_border)
 6227            })
 6228        };
 6229        let paddings = if centered_layout {
 6230            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6231            (
 6232                render_padding(Self::adjust_padding(settings.left_padding)),
 6233                render_padding(Self::adjust_padding(settings.right_padding)),
 6234            )
 6235        } else {
 6236            (None, None)
 6237        };
 6238        let ui_font = theme::setup_ui_font(window, cx);
 6239
 6240        let theme = cx.theme().clone();
 6241        let colors = theme.colors();
 6242        let notification_entities = self
 6243            .notifications
 6244            .iter()
 6245            .map(|(_, notification)| notification.entity_id())
 6246            .collect::<Vec<_>>();
 6247        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6248
 6249        client_side_decorations(
 6250            self.actions(div(), window, cx)
 6251                .key_context(context)
 6252                .relative()
 6253                .size_full()
 6254                .flex()
 6255                .flex_col()
 6256                .font(ui_font)
 6257                .gap_0()
 6258                .justify_start()
 6259                .items_start()
 6260                .text_color(colors.text)
 6261                .overflow_hidden()
 6262                .children(self.titlebar_item.clone())
 6263                .on_modifiers_changed(move |_, _, cx| {
 6264                    for &id in &notification_entities {
 6265                        cx.notify(id);
 6266                    }
 6267                })
 6268                .child(
 6269                    div()
 6270                        .size_full()
 6271                        .relative()
 6272                        .flex_1()
 6273                        .flex()
 6274                        .flex_col()
 6275                        .child(
 6276                            div()
 6277                                .id("workspace")
 6278                                .bg(colors.background)
 6279                                .relative()
 6280                                .flex_1()
 6281                                .w_full()
 6282                                .flex()
 6283                                .flex_col()
 6284                                .overflow_hidden()
 6285                                .border_t_1()
 6286                                .border_b_1()
 6287                                .border_color(colors.border)
 6288                                .child({
 6289                                    let this = cx.entity().clone();
 6290                                    canvas(
 6291                                        move |bounds, window, cx| {
 6292                                            this.update(cx, |this, cx| {
 6293                                                let bounds_changed = this.bounds != bounds;
 6294                                                this.bounds = bounds;
 6295
 6296                                                if bounds_changed {
 6297                                                    this.left_dock.update(cx, |dock, cx| {
 6298                                                        dock.clamp_panel_size(
 6299                                                            bounds.size.width,
 6300                                                            window,
 6301                                                            cx,
 6302                                                        )
 6303                                                    });
 6304
 6305                                                    this.right_dock.update(cx, |dock, cx| {
 6306                                                        dock.clamp_panel_size(
 6307                                                            bounds.size.width,
 6308                                                            window,
 6309                                                            cx,
 6310                                                        )
 6311                                                    });
 6312
 6313                                                    this.bottom_dock.update(cx, |dock, cx| {
 6314                                                        dock.clamp_panel_size(
 6315                                                            bounds.size.height,
 6316                                                            window,
 6317                                                            cx,
 6318                                                        )
 6319                                                    });
 6320                                                }
 6321                                            })
 6322                                        },
 6323                                        |_, _, _, _| {},
 6324                                    )
 6325                                    .absolute()
 6326                                    .size_full()
 6327                                })
 6328                                .when(self.zoomed.is_none(), |this| {
 6329                                    this.on_drag_move(cx.listener(
 6330                                        move |workspace,
 6331                                              e: &DragMoveEvent<DraggedDock>,
 6332                                              window,
 6333                                              cx| {
 6334                                            if workspace.previous_dock_drag_coordinates
 6335                                                != Some(e.event.position)
 6336                                            {
 6337                                                workspace.previous_dock_drag_coordinates =
 6338                                                    Some(e.event.position);
 6339                                                match e.drag(cx).0 {
 6340                                                    DockPosition::Left => {
 6341                                                        workspace.resize_left_dock(
 6342                                                            e.event.position.x
 6343                                                                - workspace.bounds.left(),
 6344                                                            window,
 6345                                                            cx,
 6346                                                        );
 6347                                                    }
 6348                                                    DockPosition::Right => {
 6349                                                        workspace.resize_right_dock(
 6350                                                            workspace.bounds.right()
 6351                                                                - e.event.position.x,
 6352                                                            window,
 6353                                                            cx,
 6354                                                        );
 6355                                                    }
 6356                                                    DockPosition::Bottom => {
 6357                                                        workspace.resize_bottom_dock(
 6358                                                            workspace.bounds.bottom()
 6359                                                                - e.event.position.y,
 6360                                                            window,
 6361                                                            cx,
 6362                                                        );
 6363                                                    }
 6364                                                };
 6365                                                workspace.serialize_workspace(window, cx);
 6366                                            }
 6367                                        },
 6368                                    ))
 6369                                })
 6370                                .child({
 6371                                    match bottom_dock_layout {
 6372                                        BottomDockLayout::Full => div()
 6373                                            .flex()
 6374                                            .flex_col()
 6375                                            .h_full()
 6376                                            .child(
 6377                                                div()
 6378                                                    .flex()
 6379                                                    .flex_row()
 6380                                                    .flex_1()
 6381                                                    .overflow_hidden()
 6382                                                    .children(self.render_dock(
 6383                                                        DockPosition::Left,
 6384                                                        &self.left_dock,
 6385                                                        window,
 6386                                                        cx,
 6387                                                    ))
 6388                                                    .child(
 6389                                                        div()
 6390                                                            .flex()
 6391                                                            .flex_col()
 6392                                                            .flex_1()
 6393                                                            .overflow_hidden()
 6394                                                            .child(
 6395                                                                h_flex()
 6396                                                                    .flex_1()
 6397                                                                    .when_some(
 6398                                                                        paddings.0,
 6399                                                                        |this, p| {
 6400                                                                            this.child(
 6401                                                                                p.border_r_1(),
 6402                                                                            )
 6403                                                                        },
 6404                                                                    )
 6405                                                                    .child(self.center.render(
 6406                                                                        self.zoomed.as_ref(),
 6407                                                                        &PaneRenderContext {
 6408                                                                            follower_states:
 6409                                                                                &self.follower_states,
 6410                                                                            active_call: self.active_call(),
 6411                                                                            active_pane: &self.active_pane,
 6412                                                                            app_state: &self.app_state,
 6413                                                                            project: &self.project,
 6414                                                                            workspace: &self.weak_self,
 6415                                                                        },
 6416                                                                        window,
 6417                                                                        cx,
 6418                                                                    ))
 6419                                                                    .when_some(
 6420                                                                        paddings.1,
 6421                                                                        |this, p| {
 6422                                                                            this.child(
 6423                                                                                p.border_l_1(),
 6424                                                                            )
 6425                                                                        },
 6426                                                                    ),
 6427                                                            ),
 6428                                                    )
 6429                                                    .children(self.render_dock(
 6430                                                        DockPosition::Right,
 6431                                                        &self.right_dock,
 6432                                                        window,
 6433                                                        cx,
 6434                                                    )),
 6435                                            )
 6436                                            .child(div().w_full().children(self.render_dock(
 6437                                                DockPosition::Bottom,
 6438                                                &self.bottom_dock,
 6439                                                window,
 6440                                                cx
 6441                                            ))),
 6442
 6443                                        BottomDockLayout::LeftAligned => div()
 6444                                            .flex()
 6445                                            .flex_row()
 6446                                            .h_full()
 6447                                            .child(
 6448                                                div()
 6449                                                    .flex()
 6450                                                    .flex_col()
 6451                                                    .flex_1()
 6452                                                    .h_full()
 6453                                                    .child(
 6454                                                        div()
 6455                                                            .flex()
 6456                                                            .flex_row()
 6457                                                            .flex_1()
 6458                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6459                                                            .child(
 6460                                                                div()
 6461                                                                    .flex()
 6462                                                                    .flex_col()
 6463                                                                    .flex_1()
 6464                                                                    .overflow_hidden()
 6465                                                                    .child(
 6466                                                                        h_flex()
 6467                                                                            .flex_1()
 6468                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6469                                                                            .child(self.center.render(
 6470                                                                                self.zoomed.as_ref(),
 6471                                                                                &PaneRenderContext {
 6472                                                                                    follower_states:
 6473                                                                                        &self.follower_states,
 6474                                                                                    active_call: self.active_call(),
 6475                                                                                    active_pane: &self.active_pane,
 6476                                                                                    app_state: &self.app_state,
 6477                                                                                    project: &self.project,
 6478                                                                                    workspace: &self.weak_self,
 6479                                                                                },
 6480                                                                                window,
 6481                                                                                cx,
 6482                                                                            ))
 6483                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6484                                                                    )
 6485                                                            )
 6486                                                    )
 6487                                                    .child(
 6488                                                        div()
 6489                                                            .w_full()
 6490                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6491                                                    ),
 6492                                            )
 6493                                            .children(self.render_dock(
 6494                                                DockPosition::Right,
 6495                                                &self.right_dock,
 6496                                                window,
 6497                                                cx,
 6498                                            )),
 6499
 6500                                        BottomDockLayout::RightAligned => div()
 6501                                            .flex()
 6502                                            .flex_row()
 6503                                            .h_full()
 6504                                            .children(self.render_dock(
 6505                                                DockPosition::Left,
 6506                                                &self.left_dock,
 6507                                                window,
 6508                                                cx,
 6509                                            ))
 6510                                            .child(
 6511                                                div()
 6512                                                    .flex()
 6513                                                    .flex_col()
 6514                                                    .flex_1()
 6515                                                    .h_full()
 6516                                                    .child(
 6517                                                        div()
 6518                                                            .flex()
 6519                                                            .flex_row()
 6520                                                            .flex_1()
 6521                                                            .child(
 6522                                                                div()
 6523                                                                    .flex()
 6524                                                                    .flex_col()
 6525                                                                    .flex_1()
 6526                                                                    .overflow_hidden()
 6527                                                                    .child(
 6528                                                                        h_flex()
 6529                                                                            .flex_1()
 6530                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6531                                                                            .child(self.center.render(
 6532                                                                                self.zoomed.as_ref(),
 6533                                                                                &PaneRenderContext {
 6534                                                                                    follower_states:
 6535                                                                                        &self.follower_states,
 6536                                                                                    active_call: self.active_call(),
 6537                                                                                    active_pane: &self.active_pane,
 6538                                                                                    app_state: &self.app_state,
 6539                                                                                    project: &self.project,
 6540                                                                                    workspace: &self.weak_self,
 6541                                                                                },
 6542                                                                                window,
 6543                                                                                cx,
 6544                                                                            ))
 6545                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6546                                                                    )
 6547                                                            )
 6548                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6549                                                    )
 6550                                                    .child(
 6551                                                        div()
 6552                                                            .w_full()
 6553                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6554                                                    ),
 6555                                            ),
 6556
 6557                                        BottomDockLayout::Contained => div()
 6558                                            .flex()
 6559                                            .flex_row()
 6560                                            .h_full()
 6561                                            .children(self.render_dock(
 6562                                                DockPosition::Left,
 6563                                                &self.left_dock,
 6564                                                window,
 6565                                                cx,
 6566                                            ))
 6567                                            .child(
 6568                                                div()
 6569                                                    .flex()
 6570                                                    .flex_col()
 6571                                                    .flex_1()
 6572                                                    .overflow_hidden()
 6573                                                    .child(
 6574                                                        h_flex()
 6575                                                            .flex_1()
 6576                                                            .when_some(paddings.0, |this, p| {
 6577                                                                this.child(p.border_r_1())
 6578                                                            })
 6579                                                            .child(self.center.render(
 6580                                                                self.zoomed.as_ref(),
 6581                                                                &PaneRenderContext {
 6582                                                                    follower_states:
 6583                                                                        &self.follower_states,
 6584                                                                    active_call: self.active_call(),
 6585                                                                    active_pane: &self.active_pane,
 6586                                                                    app_state: &self.app_state,
 6587                                                                    project: &self.project,
 6588                                                                    workspace: &self.weak_self,
 6589                                                                },
 6590                                                                window,
 6591                                                                cx,
 6592                                                            ))
 6593                                                            .when_some(paddings.1, |this, p| {
 6594                                                                this.child(p.border_l_1())
 6595                                                            }),
 6596                                                    )
 6597                                                    .children(self.render_dock(
 6598                                                        DockPosition::Bottom,
 6599                                                        &self.bottom_dock,
 6600                                                        window,
 6601                                                        cx,
 6602                                                    )),
 6603                                            )
 6604                                            .children(self.render_dock(
 6605                                                DockPosition::Right,
 6606                                                &self.right_dock,
 6607                                                window,
 6608                                                cx,
 6609                                            )),
 6610                                    }
 6611                                })
 6612                                .children(self.zoomed.as_ref().and_then(|view| {
 6613                                    let zoomed_view = view.upgrade()?;
 6614                                    let div = div()
 6615                                        .occlude()
 6616                                        .absolute()
 6617                                        .overflow_hidden()
 6618                                        .border_color(colors.border)
 6619                                        .bg(colors.background)
 6620                                        .child(zoomed_view)
 6621                                        .inset_0()
 6622                                        .shadow_lg();
 6623
 6624                                    Some(match self.zoomed_position {
 6625                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6626                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6627                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6628                                        None => {
 6629                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6630                                        }
 6631                                    })
 6632                                }))
 6633                                .children(self.render_notifications(window, cx)),
 6634                        )
 6635                        .child(self.status_bar.clone())
 6636                        .child(self.modal_layer.clone())
 6637                        .child(self.toast_layer.clone()),
 6638                ),
 6639            window,
 6640            cx,
 6641        )
 6642    }
 6643}
 6644
 6645impl WorkspaceStore {
 6646    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6647        Self {
 6648            workspaces: Default::default(),
 6649            _subscriptions: vec![
 6650                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6651                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6652            ],
 6653            client,
 6654        }
 6655    }
 6656
 6657    pub fn update_followers(
 6658        &self,
 6659        project_id: Option<u64>,
 6660        update: proto::update_followers::Variant,
 6661        cx: &App,
 6662    ) -> Option<()> {
 6663        let active_call = ActiveCall::try_global(cx)?;
 6664        let room_id = active_call.read(cx).room()?.read(cx).id();
 6665        self.client
 6666            .send(proto::UpdateFollowers {
 6667                room_id,
 6668                project_id,
 6669                variant: Some(update),
 6670            })
 6671            .log_err()
 6672    }
 6673
 6674    pub async fn handle_follow(
 6675        this: Entity<Self>,
 6676        envelope: TypedEnvelope<proto::Follow>,
 6677        mut cx: AsyncApp,
 6678    ) -> Result<proto::FollowResponse> {
 6679        this.update(&mut cx, |this, cx| {
 6680            let follower = Follower {
 6681                project_id: envelope.payload.project_id,
 6682                peer_id: envelope.original_sender_id()?,
 6683            };
 6684
 6685            let mut response = proto::FollowResponse::default();
 6686            this.workspaces.retain(|workspace| {
 6687                workspace
 6688                    .update(cx, |workspace, window, cx| {
 6689                        let handler_response =
 6690                            workspace.handle_follow(follower.project_id, window, cx);
 6691                        if let Some(active_view) = handler_response.active_view.clone() {
 6692                            if workspace.project.read(cx).remote_id() == follower.project_id {
 6693                                response.active_view = Some(active_view)
 6694                            }
 6695                        }
 6696                    })
 6697                    .is_ok()
 6698            });
 6699
 6700            Ok(response)
 6701        })?
 6702    }
 6703
 6704    async fn handle_update_followers(
 6705        this: Entity<Self>,
 6706        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6707        mut cx: AsyncApp,
 6708    ) -> Result<()> {
 6709        let leader_id = envelope.original_sender_id()?;
 6710        let update = envelope.payload;
 6711
 6712        this.update(&mut cx, |this, cx| {
 6713            this.workspaces.retain(|workspace| {
 6714                workspace
 6715                    .update(cx, |workspace, window, cx| {
 6716                        let project_id = workspace.project.read(cx).remote_id();
 6717                        if update.project_id != project_id && update.project_id.is_some() {
 6718                            return;
 6719                        }
 6720                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6721                    })
 6722                    .is_ok()
 6723            });
 6724            Ok(())
 6725        })?
 6726    }
 6727
 6728    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6729        &self.workspaces
 6730    }
 6731}
 6732
 6733impl ViewId {
 6734    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6735        Ok(Self {
 6736            creator: message
 6737                .creator
 6738                .map(CollaboratorId::PeerId)
 6739                .context("creator is missing")?,
 6740            id: message.id,
 6741        })
 6742    }
 6743
 6744    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6745        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6746            Some(proto::ViewId {
 6747                creator: Some(peer_id),
 6748                id: self.id,
 6749            })
 6750        } else {
 6751            None
 6752        }
 6753    }
 6754}
 6755
 6756impl FollowerState {
 6757    fn pane(&self) -> &Entity<Pane> {
 6758        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6759    }
 6760}
 6761
 6762pub trait WorkspaceHandle {
 6763    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6764}
 6765
 6766impl WorkspaceHandle for Entity<Workspace> {
 6767    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6768        self.read(cx)
 6769            .worktrees(cx)
 6770            .flat_map(|worktree| {
 6771                let worktree_id = worktree.read(cx).id();
 6772                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6773                    worktree_id,
 6774                    path: f.path.clone(),
 6775                })
 6776            })
 6777            .collect::<Vec<_>>()
 6778    }
 6779}
 6780
 6781impl std::fmt::Debug for OpenPaths {
 6782    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 6783        f.debug_struct("OpenPaths")
 6784            .field("paths", &self.paths)
 6785            .finish()
 6786    }
 6787}
 6788
 6789pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6790    DB.last_workspace().await.log_err().flatten()
 6791}
 6792
 6793pub fn last_session_workspace_locations(
 6794    last_session_id: &str,
 6795    last_session_window_stack: Option<Vec<WindowId>>,
 6796) -> Option<Vec<SerializedWorkspaceLocation>> {
 6797    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6798        .log_err()
 6799}
 6800
 6801actions!(
 6802    collab,
 6803    [
 6804        /// Opens the channel notes for the current call.
 6805        ///
 6806        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6807        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6808        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6809        OpenChannelNotes,
 6810        /// Mutes your microphone.
 6811        Mute,
 6812        /// Deafens yourself (mute both microphone and speakers).
 6813        Deafen,
 6814        /// Leaves the current call.
 6815        LeaveCall,
 6816        /// Shares the current project with collaborators.
 6817        ShareProject,
 6818        /// Shares your screen with collaborators.
 6819        ScreenShare
 6820    ]
 6821);
 6822actions!(
 6823    zed,
 6824    [
 6825        /// Opens the Zed log file.
 6826        OpenLog
 6827    ]
 6828);
 6829
 6830async fn join_channel_internal(
 6831    channel_id: ChannelId,
 6832    app_state: &Arc<AppState>,
 6833    requesting_window: Option<WindowHandle<Workspace>>,
 6834    active_call: &Entity<ActiveCall>,
 6835    cx: &mut AsyncApp,
 6836) -> Result<bool> {
 6837    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6838        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6839            return (false, None);
 6840        };
 6841
 6842        let already_in_channel = room.channel_id() == Some(channel_id);
 6843        let should_prompt = room.is_sharing_project()
 6844            && !room.remote_participants().is_empty()
 6845            && !already_in_channel;
 6846        let open_room = if already_in_channel {
 6847            active_call.room().cloned()
 6848        } else {
 6849            None
 6850        };
 6851        (should_prompt, open_room)
 6852    })?;
 6853
 6854    if let Some(room) = open_room {
 6855        let task = room.update(cx, |room, cx| {
 6856            if let Some((project, host)) = room.most_active_project(cx) {
 6857                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6858            }
 6859
 6860            None
 6861        })?;
 6862        if let Some(task) = task {
 6863            task.await?;
 6864        }
 6865        return anyhow::Ok(true);
 6866    }
 6867
 6868    if should_prompt {
 6869        if let Some(workspace) = requesting_window {
 6870            let answer = workspace
 6871                .update(cx, |_, window, cx| {
 6872                    window.prompt(
 6873                        PromptLevel::Warning,
 6874                        "Do you want to switch channels?",
 6875                        Some("Leaving this call will unshare your current project."),
 6876                        &["Yes, Join Channel", "Cancel"],
 6877                        cx,
 6878                    )
 6879                })?
 6880                .await;
 6881
 6882            if answer == Ok(1) {
 6883                return Ok(false);
 6884            }
 6885        } else {
 6886            return Ok(false); // unreachable!() hopefully
 6887        }
 6888    }
 6889
 6890    let client = cx.update(|cx| active_call.read(cx).client())?;
 6891
 6892    let mut client_status = client.status();
 6893
 6894    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6895    'outer: loop {
 6896        let Some(status) = client_status.recv().await else {
 6897            anyhow::bail!("error connecting");
 6898        };
 6899
 6900        match status {
 6901            Status::Connecting
 6902            | Status::Authenticating
 6903            | Status::Reconnecting
 6904            | Status::Reauthenticating => continue,
 6905            Status::Connected { .. } => break 'outer,
 6906            Status::SignedOut => return Err(ErrorCode::SignedOut.into()),
 6907            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6908            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6909                return Err(ErrorCode::Disconnected.into());
 6910            }
 6911        }
 6912    }
 6913
 6914    let room = active_call
 6915        .update(cx, |active_call, cx| {
 6916            active_call.join_channel(channel_id, cx)
 6917        })?
 6918        .await?;
 6919
 6920    let Some(room) = room else {
 6921        return anyhow::Ok(true);
 6922    };
 6923
 6924    room.update(cx, |room, _| room.room_update_completed())?
 6925        .await;
 6926
 6927    let task = room.update(cx, |room, cx| {
 6928        if let Some((project, host)) = room.most_active_project(cx) {
 6929            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6930        }
 6931
 6932        // If you are the first to join a channel, see if you should share your project.
 6933        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
 6934            if let Some(workspace) = requesting_window {
 6935                let project = workspace.update(cx, |workspace, _, cx| {
 6936                    let project = workspace.project.read(cx);
 6937
 6938                    if !CallSettings::get_global(cx).share_on_join {
 6939                        return None;
 6940                    }
 6941
 6942                    if (project.is_local() || project.is_via_ssh())
 6943                        && project.visible_worktrees(cx).any(|tree| {
 6944                            tree.read(cx)
 6945                                .root_entry()
 6946                                .map_or(false, |entry| entry.is_dir())
 6947                        })
 6948                    {
 6949                        Some(workspace.project.clone())
 6950                    } else {
 6951                        None
 6952                    }
 6953                });
 6954                if let Ok(Some(project)) = project {
 6955                    return Some(cx.spawn(async move |room, cx| {
 6956                        room.update(cx, |room, cx| room.share_project(project, cx))?
 6957                            .await?;
 6958                        Ok(())
 6959                    }));
 6960                }
 6961            }
 6962        }
 6963
 6964        None
 6965    })?;
 6966    if let Some(task) = task {
 6967        task.await?;
 6968        return anyhow::Ok(true);
 6969    }
 6970    anyhow::Ok(false)
 6971}
 6972
 6973pub fn join_channel(
 6974    channel_id: ChannelId,
 6975    app_state: Arc<AppState>,
 6976    requesting_window: Option<WindowHandle<Workspace>>,
 6977    cx: &mut App,
 6978) -> Task<Result<()>> {
 6979    let active_call = ActiveCall::global(cx);
 6980    cx.spawn(async move |cx| {
 6981        let result = join_channel_internal(
 6982            channel_id,
 6983            &app_state,
 6984            requesting_window,
 6985            &active_call,
 6986             cx,
 6987        )
 6988            .await;
 6989
 6990        // join channel succeeded, and opened a window
 6991        if matches!(result, Ok(true)) {
 6992            return anyhow::Ok(());
 6993        }
 6994
 6995        // find an existing workspace to focus and show call controls
 6996        let mut active_window =
 6997            requesting_window.or_else(|| activate_any_workspace_window( cx));
 6998        if active_window.is_none() {
 6999            // no open workspaces, make one to show the error in (blergh)
 7000            let (window_handle, _) = cx
 7001                .update(|cx| {
 7002                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7003                })?
 7004                .await?;
 7005
 7006            if result.is_ok() {
 7007                cx.update(|cx| {
 7008                    cx.dispatch_action(&OpenChannelNotes);
 7009                }).log_err();
 7010            }
 7011
 7012            active_window = Some(window_handle);
 7013        }
 7014
 7015        if let Err(err) = result {
 7016            log::error!("failed to join channel: {}", err);
 7017            if let Some(active_window) = active_window {
 7018                active_window
 7019                    .update(cx, |_, window, cx| {
 7020                        let detail: SharedString = match err.error_code() {
 7021                            ErrorCode::SignedOut => {
 7022                                "Please sign in to continue.".into()
 7023                            }
 7024                            ErrorCode::UpgradeRequired => {
 7025                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7026                            }
 7027                            ErrorCode::NoSuchChannel => {
 7028                                "No matching channel was found. Please check the link and try again.".into()
 7029                            }
 7030                            ErrorCode::Forbidden => {
 7031                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7032                            }
 7033                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7034                            _ => format!("{}\n\nPlease try again.", err).into(),
 7035                        };
 7036                        window.prompt(
 7037                            PromptLevel::Critical,
 7038                            "Failed to join channel",
 7039                            Some(&detail),
 7040                            &["Ok"],
 7041                        cx)
 7042                    })?
 7043                    .await
 7044                    .ok();
 7045            }
 7046        }
 7047
 7048        // return ok, we showed the error to the user.
 7049        anyhow::Ok(())
 7050    })
 7051}
 7052
 7053pub async fn get_any_active_workspace(
 7054    app_state: Arc<AppState>,
 7055    mut cx: AsyncApp,
 7056) -> anyhow::Result<WindowHandle<Workspace>> {
 7057    // find an existing workspace to focus and show call controls
 7058    let active_window = activate_any_workspace_window(&mut cx);
 7059    if active_window.is_none() {
 7060        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7061            .await?;
 7062    }
 7063    activate_any_workspace_window(&mut cx).context("could not open zed")
 7064}
 7065
 7066fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7067    cx.update(|cx| {
 7068        if let Some(workspace_window) = cx
 7069            .active_window()
 7070            .and_then(|window| window.downcast::<Workspace>())
 7071        {
 7072            return Some(workspace_window);
 7073        }
 7074
 7075        for window in cx.windows() {
 7076            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7077                workspace_window
 7078                    .update(cx, |_, window, _| window.activate_window())
 7079                    .ok();
 7080                return Some(workspace_window);
 7081            }
 7082        }
 7083        None
 7084    })
 7085    .ok()
 7086    .flatten()
 7087}
 7088
 7089pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7090    cx.windows()
 7091        .into_iter()
 7092        .filter_map(|window| window.downcast::<Workspace>())
 7093        .filter(|workspace| {
 7094            workspace
 7095                .read(cx)
 7096                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7097        })
 7098        .collect()
 7099}
 7100
 7101#[derive(Default)]
 7102pub struct OpenOptions {
 7103    pub visible: Option<OpenVisible>,
 7104    pub focus: Option<bool>,
 7105    pub open_new_workspace: Option<bool>,
 7106    pub replace_window: Option<WindowHandle<Workspace>>,
 7107    pub env: Option<HashMap<String, String>>,
 7108}
 7109
 7110#[allow(clippy::type_complexity)]
 7111pub fn open_paths(
 7112    abs_paths: &[PathBuf],
 7113    app_state: Arc<AppState>,
 7114    open_options: OpenOptions,
 7115    cx: &mut App,
 7116) -> Task<
 7117    anyhow::Result<(
 7118        WindowHandle<Workspace>,
 7119        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7120    )>,
 7121> {
 7122    let abs_paths = abs_paths.to_vec();
 7123    let mut existing = None;
 7124    let mut best_match = None;
 7125    let mut open_visible = OpenVisible::All;
 7126
 7127    cx.spawn(async move |cx| {
 7128        if open_options.open_new_workspace != Some(true) {
 7129            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7130            let all_metadatas = futures::future::join_all(all_paths)
 7131                .await
 7132                .into_iter()
 7133                .filter_map(|result| result.ok().flatten())
 7134                .collect::<Vec<_>>();
 7135
 7136            cx.update(|cx| {
 7137                for window in local_workspace_windows(&cx) {
 7138                    if let Ok(workspace) = window.read(&cx) {
 7139                        let m = workspace.project.read(&cx).visibility_for_paths(
 7140                            &abs_paths,
 7141                            &all_metadatas,
 7142                            open_options.open_new_workspace == None,
 7143                            cx,
 7144                        );
 7145                        if m > best_match {
 7146                            existing = Some(window);
 7147                            best_match = m;
 7148                        } else if best_match.is_none()
 7149                            && open_options.open_new_workspace == Some(false)
 7150                        {
 7151                            existing = Some(window)
 7152                        }
 7153                    }
 7154                }
 7155            })?;
 7156
 7157            if open_options.open_new_workspace.is_none() && existing.is_none() {
 7158                if all_metadatas.iter().all(|file| !file.is_dir) {
 7159                    cx.update(|cx| {
 7160                        if let Some(window) = cx
 7161                            .active_window()
 7162                            .and_then(|window| window.downcast::<Workspace>())
 7163                        {
 7164                            if let Ok(workspace) = window.read(cx) {
 7165                                let project = workspace.project().read(cx);
 7166                                if project.is_local() && !project.is_via_collab() {
 7167                                    existing = Some(window);
 7168                                    open_visible = OpenVisible::None;
 7169                                    return;
 7170                                }
 7171                            }
 7172                        }
 7173                        for window in local_workspace_windows(cx) {
 7174                            if let Ok(workspace) = window.read(cx) {
 7175                                let project = workspace.project().read(cx);
 7176                                if project.is_via_collab() {
 7177                                    continue;
 7178                                }
 7179                                existing = Some(window);
 7180                                open_visible = OpenVisible::None;
 7181                                break;
 7182                            }
 7183                        }
 7184                    })?;
 7185                }
 7186            }
 7187        }
 7188
 7189        if let Some(existing) = existing {
 7190            let open_task = existing
 7191                .update(cx, |workspace, window, cx| {
 7192                    window.activate_window();
 7193                    workspace.open_paths(
 7194                        abs_paths,
 7195                        OpenOptions {
 7196                            visible: Some(open_visible),
 7197                            ..Default::default()
 7198                        },
 7199                        None,
 7200                        window,
 7201                        cx,
 7202                    )
 7203                })?
 7204                .await;
 7205
 7206            _ = existing.update(cx, |workspace, _, cx| {
 7207                for item in open_task.iter().flatten() {
 7208                    if let Err(e) = item {
 7209                        workspace.show_error(&e, cx);
 7210                    }
 7211                }
 7212            });
 7213
 7214            Ok((existing, open_task))
 7215        } else {
 7216            cx.update(move |cx| {
 7217                Workspace::new_local(
 7218                    abs_paths,
 7219                    app_state.clone(),
 7220                    open_options.replace_window,
 7221                    open_options.env,
 7222                    cx,
 7223                )
 7224            })?
 7225            .await
 7226        }
 7227    })
 7228}
 7229
 7230pub fn open_new(
 7231    open_options: OpenOptions,
 7232    app_state: Arc<AppState>,
 7233    cx: &mut App,
 7234    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7235) -> Task<anyhow::Result<()>> {
 7236    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7237    cx.spawn(async move |cx| {
 7238        let (workspace, opened_paths) = task.await?;
 7239        workspace.update(cx, |workspace, window, cx| {
 7240            if opened_paths.is_empty() {
 7241                init(workspace, window, cx)
 7242            }
 7243        })?;
 7244        Ok(())
 7245    })
 7246}
 7247
 7248pub fn create_and_open_local_file(
 7249    path: &'static Path,
 7250    window: &mut Window,
 7251    cx: &mut Context<Workspace>,
 7252    default_content: impl 'static + Send + FnOnce() -> Rope,
 7253) -> Task<Result<Box<dyn ItemHandle>>> {
 7254    cx.spawn_in(window, async move |workspace, cx| {
 7255        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7256        if !fs.is_file(path).await {
 7257            fs.create_file(path, Default::default()).await?;
 7258            fs.save(path, &default_content(), Default::default())
 7259                .await?;
 7260        }
 7261
 7262        let mut items = workspace
 7263            .update_in(cx, |workspace, window, cx| {
 7264                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7265                    workspace.open_paths(
 7266                        vec![path.to_path_buf()],
 7267                        OpenOptions {
 7268                            visible: Some(OpenVisible::None),
 7269                            ..Default::default()
 7270                        },
 7271                        None,
 7272                        window,
 7273                        cx,
 7274                    )
 7275                })
 7276            })?
 7277            .await?
 7278            .await;
 7279
 7280        let item = items.pop().flatten();
 7281        item.with_context(|| format!("path {path:?} is not a file"))?
 7282    })
 7283}
 7284
 7285pub fn open_ssh_project_with_new_connection(
 7286    window: WindowHandle<Workspace>,
 7287    connection_options: SshConnectionOptions,
 7288    cancel_rx: oneshot::Receiver<()>,
 7289    delegate: Arc<dyn SshClientDelegate>,
 7290    app_state: Arc<AppState>,
 7291    paths: Vec<PathBuf>,
 7292    cx: &mut App,
 7293) -> Task<Result<()>> {
 7294    cx.spawn(async move |cx| {
 7295        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7296            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7297
 7298        let session = match cx
 7299            .update(|cx| {
 7300                remote::SshRemoteClient::new(
 7301                    ConnectionIdentifier::Workspace(workspace_id.0),
 7302                    connection_options,
 7303                    cancel_rx,
 7304                    delegate,
 7305                    cx,
 7306                )
 7307            })?
 7308            .await?
 7309        {
 7310            Some(result) => result,
 7311            None => return Ok(()),
 7312        };
 7313
 7314        let project = cx.update(|cx| {
 7315            project::Project::ssh(
 7316                session,
 7317                app_state.client.clone(),
 7318                app_state.node_runtime.clone(),
 7319                app_state.user_store.clone(),
 7320                app_state.languages.clone(),
 7321                app_state.fs.clone(),
 7322                cx,
 7323            )
 7324        })?;
 7325
 7326        open_ssh_project_inner(
 7327            project,
 7328            paths,
 7329            serialized_ssh_project,
 7330            workspace_id,
 7331            serialized_workspace,
 7332            app_state,
 7333            window,
 7334            cx,
 7335        )
 7336        .await
 7337    })
 7338}
 7339
 7340pub fn open_ssh_project_with_existing_connection(
 7341    connection_options: SshConnectionOptions,
 7342    project: Entity<Project>,
 7343    paths: Vec<PathBuf>,
 7344    app_state: Arc<AppState>,
 7345    window: WindowHandle<Workspace>,
 7346    cx: &mut AsyncApp,
 7347) -> Task<Result<()>> {
 7348    cx.spawn(async move |cx| {
 7349        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7350            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7351
 7352        open_ssh_project_inner(
 7353            project,
 7354            paths,
 7355            serialized_ssh_project,
 7356            workspace_id,
 7357            serialized_workspace,
 7358            app_state,
 7359            window,
 7360            cx,
 7361        )
 7362        .await
 7363    })
 7364}
 7365
 7366async fn open_ssh_project_inner(
 7367    project: Entity<Project>,
 7368    paths: Vec<PathBuf>,
 7369    serialized_ssh_project: SerializedSshProject,
 7370    workspace_id: WorkspaceId,
 7371    serialized_workspace: Option<SerializedWorkspace>,
 7372    app_state: Arc<AppState>,
 7373    window: WindowHandle<Workspace>,
 7374    cx: &mut AsyncApp,
 7375) -> Result<()> {
 7376    let toolchains = DB.toolchains(workspace_id).await?;
 7377    for (toolchain, worktree_id, path) in toolchains {
 7378        project
 7379            .update(cx, |this, cx| {
 7380                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7381            })?
 7382            .await;
 7383    }
 7384    let mut project_paths_to_open = vec![];
 7385    let mut project_path_errors = vec![];
 7386
 7387    for path in paths {
 7388        let result = cx
 7389            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7390            .await;
 7391        match result {
 7392            Ok((_, project_path)) => {
 7393                project_paths_to_open.push((path.clone(), Some(project_path)));
 7394            }
 7395            Err(error) => {
 7396                project_path_errors.push(error);
 7397            }
 7398        };
 7399    }
 7400
 7401    if project_paths_to_open.is_empty() {
 7402        return Err(project_path_errors.pop().context("no paths given")?);
 7403    }
 7404
 7405    if let Some(detach_session_task) = window
 7406        .update(cx, |_workspace, window, cx| {
 7407            cx.spawn_in(window, async move |this, cx| {
 7408                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7409            })
 7410        })
 7411        .ok()
 7412    {
 7413        detach_session_task.await.ok();
 7414    }
 7415
 7416    cx.update_window(window.into(), |_, window, cx| {
 7417        window.replace_root(cx, |window, cx| {
 7418            telemetry::event!("SSH Project Opened");
 7419
 7420            let mut workspace =
 7421                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7422            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7423            workspace.update_history(cx);
 7424
 7425            if let Some(ref serialized) = serialized_workspace {
 7426                workspace.centered_layout = serialized.centered_layout;
 7427            }
 7428
 7429            workspace
 7430        });
 7431    })?;
 7432
 7433    window
 7434        .update(cx, |_, window, cx| {
 7435            window.activate_window();
 7436            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7437        })?
 7438        .await?;
 7439
 7440    window.update(cx, |workspace, _, cx| {
 7441        for error in project_path_errors {
 7442            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7443                if let Some(path) = error.error_tag("path") {
 7444                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7445                }
 7446            } else {
 7447                workspace.show_error(&error, cx)
 7448            }
 7449        }
 7450    })?;
 7451
 7452    Ok(())
 7453}
 7454
 7455fn serialize_ssh_project(
 7456    connection_options: SshConnectionOptions,
 7457    paths: Vec<PathBuf>,
 7458    cx: &AsyncApp,
 7459) -> Task<
 7460    Result<(
 7461        SerializedSshProject,
 7462        WorkspaceId,
 7463        Option<SerializedWorkspace>,
 7464    )>,
 7465> {
 7466    cx.background_spawn(async move {
 7467        let serialized_ssh_project = persistence::DB
 7468            .get_or_create_ssh_project(
 7469                connection_options.host.clone(),
 7470                connection_options.port,
 7471                paths
 7472                    .iter()
 7473                    .map(|path| path.to_string_lossy().to_string())
 7474                    .collect::<Vec<_>>(),
 7475                connection_options.username.clone(),
 7476            )
 7477            .await?;
 7478
 7479        let serialized_workspace =
 7480            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7481
 7482        let workspace_id = if let Some(workspace_id) =
 7483            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7484        {
 7485            workspace_id
 7486        } else {
 7487            persistence::DB.next_id().await?
 7488        };
 7489
 7490        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7491    })
 7492}
 7493
 7494pub fn join_in_room_project(
 7495    project_id: u64,
 7496    follow_user_id: u64,
 7497    app_state: Arc<AppState>,
 7498    cx: &mut App,
 7499) -> Task<Result<()>> {
 7500    let windows = cx.windows();
 7501    cx.spawn(async move |cx| {
 7502        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7503            window_handle
 7504                .downcast::<Workspace>()
 7505                .and_then(|window_handle| {
 7506                    window_handle
 7507                        .update(cx, |workspace, _window, cx| {
 7508                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7509                                Some(window_handle)
 7510                            } else {
 7511                                None
 7512                            }
 7513                        })
 7514                        .unwrap_or(None)
 7515                })
 7516        });
 7517
 7518        let workspace = if let Some(existing_workspace) = existing_workspace {
 7519            existing_workspace
 7520        } else {
 7521            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7522            let room = active_call
 7523                .read_with(cx, |call, _| call.room().cloned())?
 7524                .context("not in a call")?;
 7525            let project = room
 7526                .update(cx, |room, cx| {
 7527                    room.join_project(
 7528                        project_id,
 7529                        app_state.languages.clone(),
 7530                        app_state.fs.clone(),
 7531                        cx,
 7532                    )
 7533                })?
 7534                .await?;
 7535
 7536            let window_bounds_override = window_bounds_env_override();
 7537            cx.update(|cx| {
 7538                let mut options = (app_state.build_window_options)(None, cx);
 7539                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7540                cx.open_window(options, |window, cx| {
 7541                    cx.new(|cx| {
 7542                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7543                    })
 7544                })
 7545            })??
 7546        };
 7547
 7548        workspace.update(cx, |workspace, window, cx| {
 7549            cx.activate(true);
 7550            window.activate_window();
 7551
 7552            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7553                let follow_peer_id = room
 7554                    .read(cx)
 7555                    .remote_participants()
 7556                    .iter()
 7557                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7558                    .map(|(_, p)| p.peer_id)
 7559                    .or_else(|| {
 7560                        // If we couldn't follow the given user, follow the host instead.
 7561                        let collaborator = workspace
 7562                            .project()
 7563                            .read(cx)
 7564                            .collaborators()
 7565                            .values()
 7566                            .find(|collaborator| collaborator.is_host)?;
 7567                        Some(collaborator.peer_id)
 7568                    });
 7569
 7570                if let Some(follow_peer_id) = follow_peer_id {
 7571                    workspace.follow(follow_peer_id, window, cx);
 7572                }
 7573            }
 7574        })?;
 7575
 7576        anyhow::Ok(())
 7577    })
 7578}
 7579
 7580pub fn reload(reload: &Reload, cx: &mut App) {
 7581    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7582    let mut workspace_windows = cx
 7583        .windows()
 7584        .into_iter()
 7585        .filter_map(|window| window.downcast::<Workspace>())
 7586        .collect::<Vec<_>>();
 7587
 7588    // If multiple windows have unsaved changes, and need a save prompt,
 7589    // prompt in the active window before switching to a different window.
 7590    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7591
 7592    let mut prompt = None;
 7593    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7594        prompt = window
 7595            .update(cx, |_, window, cx| {
 7596                window.prompt(
 7597                    PromptLevel::Info,
 7598                    "Are you sure you want to restart?",
 7599                    None,
 7600                    &["Restart", "Cancel"],
 7601                    cx,
 7602                )
 7603            })
 7604            .ok();
 7605    }
 7606
 7607    let binary_path = reload.binary_path.clone();
 7608    cx.spawn(async move |cx| {
 7609        if let Some(prompt) = prompt {
 7610            let answer = prompt.await?;
 7611            if answer != 0 {
 7612                return Ok(());
 7613            }
 7614        }
 7615
 7616        // If the user cancels any save prompt, then keep the app open.
 7617        for window in workspace_windows {
 7618            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7619                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7620            }) {
 7621                if !should_close.await? {
 7622                    return Ok(());
 7623                }
 7624            }
 7625        }
 7626
 7627        cx.update(|cx| cx.restart(binary_path))
 7628    })
 7629    .detach_and_log_err(cx);
 7630}
 7631
 7632fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7633    let mut parts = value.split(',');
 7634    let x: usize = parts.next()?.parse().ok()?;
 7635    let y: usize = parts.next()?.parse().ok()?;
 7636    Some(point(px(x as f32), px(y as f32)))
 7637}
 7638
 7639fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7640    let mut parts = value.split(',');
 7641    let width: usize = parts.next()?.parse().ok()?;
 7642    let height: usize = parts.next()?.parse().ok()?;
 7643    Some(size(px(width as f32), px(height as f32)))
 7644}
 7645
 7646/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7647pub fn client_side_decorations(
 7648    element: impl IntoElement,
 7649    window: &mut Window,
 7650    cx: &mut App,
 7651) -> Stateful<Div> {
 7652    const BORDER_SIZE: Pixels = px(1.0);
 7653    let decorations = window.window_decorations();
 7654
 7655    match decorations {
 7656        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7657        Decorations::Server { .. } => window.set_client_inset(px(0.0)),
 7658    }
 7659
 7660    struct GlobalResizeEdge(ResizeEdge);
 7661    impl Global for GlobalResizeEdge {}
 7662
 7663    div()
 7664        .id("window-backdrop")
 7665        .bg(transparent_black())
 7666        .map(|div| match decorations {
 7667            Decorations::Server => div,
 7668            Decorations::Client { tiling, .. } => div
 7669                .when(!(tiling.top || tiling.right), |div| {
 7670                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7671                })
 7672                .when(!(tiling.top || tiling.left), |div| {
 7673                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7674                })
 7675                .when(!(tiling.bottom || tiling.right), |div| {
 7676                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7677                })
 7678                .when(!(tiling.bottom || tiling.left), |div| {
 7679                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7680                })
 7681                .when(!tiling.top, |div| {
 7682                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7683                })
 7684                .when(!tiling.bottom, |div| {
 7685                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7686                })
 7687                .when(!tiling.left, |div| {
 7688                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7689                })
 7690                .when(!tiling.right, |div| {
 7691                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7692                })
 7693                .on_mouse_move(move |e, window, cx| {
 7694                    let size = window.window_bounds().get_bounds().size;
 7695                    let pos = e.position;
 7696
 7697                    let new_edge =
 7698                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7699
 7700                    let edge = cx.try_global::<GlobalResizeEdge>();
 7701                    if new_edge != edge.map(|edge| edge.0) {
 7702                        window
 7703                            .window_handle()
 7704                            .update(cx, |workspace, _, cx| {
 7705                                cx.notify(workspace.entity_id());
 7706                            })
 7707                            .ok();
 7708                    }
 7709                })
 7710                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7711                    let size = window.window_bounds().get_bounds().size;
 7712                    let pos = e.position;
 7713
 7714                    let edge = match resize_edge(
 7715                        pos,
 7716                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7717                        size,
 7718                        tiling,
 7719                    ) {
 7720                        Some(value) => value,
 7721                        None => return,
 7722                    };
 7723
 7724                    window.start_window_resize(edge);
 7725                }),
 7726        })
 7727        .size_full()
 7728        .child(
 7729            div()
 7730                .cursor(CursorStyle::Arrow)
 7731                .map(|div| match decorations {
 7732                    Decorations::Server => div,
 7733                    Decorations::Client { tiling } => div
 7734                        .border_color(cx.theme().colors().border)
 7735                        .when(!(tiling.top || tiling.right), |div| {
 7736                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7737                        })
 7738                        .when(!(tiling.top || tiling.left), |div| {
 7739                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7740                        })
 7741                        .when(!(tiling.bottom || tiling.right), |div| {
 7742                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7743                        })
 7744                        .when(!(tiling.bottom || tiling.left), |div| {
 7745                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7746                        })
 7747                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7748                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7749                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7750                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7751                        .when(!tiling.is_tiled(), |div| {
 7752                            div.shadow(vec![gpui::BoxShadow {
 7753                                color: Hsla {
 7754                                    h: 0.,
 7755                                    s: 0.,
 7756                                    l: 0.,
 7757                                    a: 0.4,
 7758                                },
 7759                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7760                                spread_radius: px(0.),
 7761                                offset: point(px(0.0), px(0.0)),
 7762                            }])
 7763                        }),
 7764                })
 7765                .on_mouse_move(|_e, _, cx| {
 7766                    cx.stop_propagation();
 7767                })
 7768                .size_full()
 7769                .child(element),
 7770        )
 7771        .map(|div| match decorations {
 7772            Decorations::Server => div,
 7773            Decorations::Client { tiling, .. } => div.child(
 7774                canvas(
 7775                    |_bounds, window, _| {
 7776                        window.insert_hitbox(
 7777                            Bounds::new(
 7778                                point(px(0.0), px(0.0)),
 7779                                window.window_bounds().get_bounds().size,
 7780                            ),
 7781                            HitboxBehavior::Normal,
 7782                        )
 7783                    },
 7784                    move |_bounds, hitbox, window, cx| {
 7785                        let mouse = window.mouse_position();
 7786                        let size = window.window_bounds().get_bounds().size;
 7787                        let Some(edge) =
 7788                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7789                        else {
 7790                            return;
 7791                        };
 7792                        cx.set_global(GlobalResizeEdge(edge));
 7793                        window.set_cursor_style(
 7794                            match edge {
 7795                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7796                                ResizeEdge::Left | ResizeEdge::Right => {
 7797                                    CursorStyle::ResizeLeftRight
 7798                                }
 7799                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7800                                    CursorStyle::ResizeUpLeftDownRight
 7801                                }
 7802                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7803                                    CursorStyle::ResizeUpRightDownLeft
 7804                                }
 7805                            },
 7806                            &hitbox,
 7807                        );
 7808                    },
 7809                )
 7810                .size_full()
 7811                .absolute(),
 7812            ),
 7813        })
 7814}
 7815
 7816fn resize_edge(
 7817    pos: Point<Pixels>,
 7818    shadow_size: Pixels,
 7819    window_size: Size<Pixels>,
 7820    tiling: Tiling,
 7821) -> Option<ResizeEdge> {
 7822    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7823    if bounds.contains(&pos) {
 7824        return None;
 7825    }
 7826
 7827    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7828    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7829    if !tiling.top && top_left_bounds.contains(&pos) {
 7830        return Some(ResizeEdge::TopLeft);
 7831    }
 7832
 7833    let top_right_bounds = Bounds::new(
 7834        Point::new(window_size.width - corner_size.width, px(0.)),
 7835        corner_size,
 7836    );
 7837    if !tiling.top && top_right_bounds.contains(&pos) {
 7838        return Some(ResizeEdge::TopRight);
 7839    }
 7840
 7841    let bottom_left_bounds = Bounds::new(
 7842        Point::new(px(0.), window_size.height - corner_size.height),
 7843        corner_size,
 7844    );
 7845    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7846        return Some(ResizeEdge::BottomLeft);
 7847    }
 7848
 7849    let bottom_right_bounds = Bounds::new(
 7850        Point::new(
 7851            window_size.width - corner_size.width,
 7852            window_size.height - corner_size.height,
 7853        ),
 7854        corner_size,
 7855    );
 7856    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7857        return Some(ResizeEdge::BottomRight);
 7858    }
 7859
 7860    if !tiling.top && pos.y < shadow_size {
 7861        Some(ResizeEdge::Top)
 7862    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7863        Some(ResizeEdge::Bottom)
 7864    } else if !tiling.left && pos.x < shadow_size {
 7865        Some(ResizeEdge::Left)
 7866    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7867        Some(ResizeEdge::Right)
 7868    } else {
 7869        None
 7870    }
 7871}
 7872
 7873fn join_pane_into_active(
 7874    active_pane: &Entity<Pane>,
 7875    pane: &Entity<Pane>,
 7876    window: &mut Window,
 7877    cx: &mut App,
 7878) {
 7879    if pane == active_pane {
 7880        return;
 7881    } else if pane.read(cx).items_len() == 0 {
 7882        pane.update(cx, |_, cx| {
 7883            cx.emit(pane::Event::Remove {
 7884                focus_on_pane: None,
 7885            });
 7886        })
 7887    } else {
 7888        move_all_items(pane, active_pane, window, cx);
 7889    }
 7890}
 7891
 7892fn move_all_items(
 7893    from_pane: &Entity<Pane>,
 7894    to_pane: &Entity<Pane>,
 7895    window: &mut Window,
 7896    cx: &mut App,
 7897) {
 7898    let destination_is_different = from_pane != to_pane;
 7899    let mut moved_items = 0;
 7900    for (item_ix, item_handle) in from_pane
 7901        .read(cx)
 7902        .items()
 7903        .enumerate()
 7904        .map(|(ix, item)| (ix, item.clone()))
 7905        .collect::<Vec<_>>()
 7906    {
 7907        let ix = item_ix - moved_items;
 7908        if destination_is_different {
 7909            // Close item from previous pane
 7910            from_pane.update(cx, |source, cx| {
 7911                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7912            });
 7913            moved_items += 1;
 7914        }
 7915
 7916        // This automatically removes duplicate items in the pane
 7917        to_pane.update(cx, |destination, cx| {
 7918            destination.add_item(item_handle, true, true, None, window, cx);
 7919            window.focus(&destination.focus_handle(cx))
 7920        });
 7921    }
 7922}
 7923
 7924pub fn move_item(
 7925    source: &Entity<Pane>,
 7926    destination: &Entity<Pane>,
 7927    item_id_to_move: EntityId,
 7928    destination_index: usize,
 7929    activate: bool,
 7930    window: &mut Window,
 7931    cx: &mut App,
 7932) {
 7933    let Some((item_ix, item_handle)) = source
 7934        .read(cx)
 7935        .items()
 7936        .enumerate()
 7937        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7938        .map(|(ix, item)| (ix, item.clone()))
 7939    else {
 7940        // Tab was closed during drag
 7941        return;
 7942    };
 7943
 7944    if source != destination {
 7945        // Close item from previous pane
 7946        source.update(cx, |source, cx| {
 7947            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7948        });
 7949    }
 7950
 7951    // This automatically removes duplicate items in the pane
 7952    destination.update(cx, |destination, cx| {
 7953        destination.add_item_inner(
 7954            item_handle,
 7955            activate,
 7956            activate,
 7957            activate,
 7958            Some(destination_index),
 7959            window,
 7960            cx,
 7961        );
 7962        if activate {
 7963            window.focus(&destination.focus_handle(cx))
 7964        }
 7965    });
 7966}
 7967
 7968pub fn move_active_item(
 7969    source: &Entity<Pane>,
 7970    destination: &Entity<Pane>,
 7971    focus_destination: bool,
 7972    close_if_empty: bool,
 7973    window: &mut Window,
 7974    cx: &mut App,
 7975) {
 7976    if source == destination {
 7977        return;
 7978    }
 7979    let Some(active_item) = source.read(cx).active_item() else {
 7980        return;
 7981    };
 7982    source.update(cx, |source_pane, cx| {
 7983        let item_id = active_item.item_id();
 7984        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 7985        destination.update(cx, |target_pane, cx| {
 7986            target_pane.add_item(
 7987                active_item,
 7988                focus_destination,
 7989                focus_destination,
 7990                Some(target_pane.items_len()),
 7991                window,
 7992                cx,
 7993            );
 7994        });
 7995    });
 7996}
 7997
 7998pub fn clone_active_item(
 7999    workspace_id: Option<WorkspaceId>,
 8000    source: &Entity<Pane>,
 8001    destination: &Entity<Pane>,
 8002    focus_destination: bool,
 8003    window: &mut Window,
 8004    cx: &mut App,
 8005) {
 8006    if source == destination {
 8007        return;
 8008    }
 8009    let Some(active_item) = source.read(cx).active_item() else {
 8010        return;
 8011    };
 8012    destination.update(cx, |target_pane, cx| {
 8013        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8014            return;
 8015        };
 8016        target_pane.add_item(
 8017            clone,
 8018            focus_destination,
 8019            focus_destination,
 8020            Some(target_pane.items_len()),
 8021            window,
 8022            cx,
 8023        );
 8024    });
 8025}
 8026
 8027#[derive(Debug)]
 8028pub struct WorkspacePosition {
 8029    pub window_bounds: Option<WindowBounds>,
 8030    pub display: Option<Uuid>,
 8031    pub centered_layout: bool,
 8032}
 8033
 8034pub fn ssh_workspace_position_from_db(
 8035    host: String,
 8036    port: Option<u16>,
 8037    user: Option<String>,
 8038    paths_to_open: &[PathBuf],
 8039    cx: &App,
 8040) -> Task<Result<WorkspacePosition>> {
 8041    let paths = paths_to_open
 8042        .iter()
 8043        .map(|path| path.to_string_lossy().to_string())
 8044        .collect::<Vec<_>>();
 8045
 8046    cx.background_spawn(async move {
 8047        let serialized_ssh_project = persistence::DB
 8048            .get_or_create_ssh_project(host, port, paths, user)
 8049            .await
 8050            .context("fetching serialized ssh project")?;
 8051        let serialized_workspace =
 8052            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8053
 8054        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8055            (Some(WindowBounds::Windowed(bounds)), None)
 8056        } else {
 8057            let restorable_bounds = serialized_workspace
 8058                .as_ref()
 8059                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8060                .or_else(|| {
 8061                    let (display, window_bounds) = DB.last_window().log_err()?;
 8062                    Some((display?, window_bounds?))
 8063                });
 8064
 8065            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8066                (Some(serialized_status.0), Some(serialized_display))
 8067            } else {
 8068                (None, None)
 8069            }
 8070        };
 8071
 8072        let centered_layout = serialized_workspace
 8073            .as_ref()
 8074            .map(|w| w.centered_layout)
 8075            .unwrap_or(false);
 8076
 8077        Ok(WorkspacePosition {
 8078            window_bounds,
 8079            display,
 8080            centered_layout,
 8081        })
 8082    })
 8083}
 8084
 8085pub fn with_active_or_new_workspace(
 8086    cx: &mut App,
 8087    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8088) {
 8089    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8090        Some(workspace) => {
 8091            cx.defer(move |cx| {
 8092                workspace
 8093                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8094                    .log_err();
 8095            });
 8096        }
 8097        None => {
 8098            let app_state = AppState::global(cx);
 8099            if let Some(app_state) = app_state.upgrade() {
 8100                open_new(
 8101                    OpenOptions::default(),
 8102                    app_state,
 8103                    cx,
 8104                    move |workspace, window, cx| f(workspace, window, cx),
 8105                )
 8106                .detach_and_log_err(cx);
 8107            }
 8108        }
 8109    }
 8110}
 8111
 8112#[cfg(test)]
 8113mod tests {
 8114    use std::{cell::RefCell, rc::Rc};
 8115
 8116    use super::*;
 8117    use crate::{
 8118        dock::{PanelEvent, test::TestPanel},
 8119        item::{
 8120            ItemEvent,
 8121            test::{TestItem, TestProjectItem},
 8122        },
 8123    };
 8124    use fs::FakeFs;
 8125    use gpui::{
 8126        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8127        UpdateGlobal, VisualTestContext, px,
 8128    };
 8129    use project::{Project, ProjectEntryId};
 8130    use serde_json::json;
 8131    use settings::SettingsStore;
 8132
 8133    #[gpui::test]
 8134    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8135        init_test(cx);
 8136
 8137        let fs = FakeFs::new(cx.executor());
 8138        let project = Project::test(fs, [], cx).await;
 8139        let (workspace, cx) =
 8140            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8141
 8142        // Adding an item with no ambiguity renders the tab without detail.
 8143        let item1 = cx.new(|cx| {
 8144            let mut item = TestItem::new(cx);
 8145            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8146            item
 8147        });
 8148        workspace.update_in(cx, |workspace, window, cx| {
 8149            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8150        });
 8151        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8152
 8153        // Adding an item that creates ambiguity increases the level of detail on
 8154        // both tabs.
 8155        let item2 = cx.new_window_entity(|_window, cx| {
 8156            let mut item = TestItem::new(cx);
 8157            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8158            item
 8159        });
 8160        workspace.update_in(cx, |workspace, window, cx| {
 8161            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8162        });
 8163        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8164        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8165
 8166        // Adding an item that creates ambiguity increases the level of detail only
 8167        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8168        // we stop at the highest detail available.
 8169        let item3 = cx.new(|cx| {
 8170            let mut item = TestItem::new(cx);
 8171            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8172            item
 8173        });
 8174        workspace.update_in(cx, |workspace, window, cx| {
 8175            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8176        });
 8177        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8178        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8179        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8180    }
 8181
 8182    #[gpui::test]
 8183    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8184        init_test(cx);
 8185
 8186        let fs = FakeFs::new(cx.executor());
 8187        fs.insert_tree(
 8188            "/root1",
 8189            json!({
 8190                "one.txt": "",
 8191                "two.txt": "",
 8192            }),
 8193        )
 8194        .await;
 8195        fs.insert_tree(
 8196            "/root2",
 8197            json!({
 8198                "three.txt": "",
 8199            }),
 8200        )
 8201        .await;
 8202
 8203        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8204        let (workspace, cx) =
 8205            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8206        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8207        let worktree_id = project.update(cx, |project, cx| {
 8208            project.worktrees(cx).next().unwrap().read(cx).id()
 8209        });
 8210
 8211        let item1 = cx.new(|cx| {
 8212            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8213        });
 8214        let item2 = cx.new(|cx| {
 8215            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8216        });
 8217
 8218        // Add an item to an empty pane
 8219        workspace.update_in(cx, |workspace, window, cx| {
 8220            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8221        });
 8222        project.update(cx, |project, cx| {
 8223            assert_eq!(
 8224                project.active_entry(),
 8225                project
 8226                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8227                    .map(|e| e.id)
 8228            );
 8229        });
 8230        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8231
 8232        // Add a second item to a non-empty pane
 8233        workspace.update_in(cx, |workspace, window, cx| {
 8234            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8235        });
 8236        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8237        project.update(cx, |project, cx| {
 8238            assert_eq!(
 8239                project.active_entry(),
 8240                project
 8241                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8242                    .map(|e| e.id)
 8243            );
 8244        });
 8245
 8246        // Close the active item
 8247        pane.update_in(cx, |pane, window, cx| {
 8248            pane.close_active_item(&Default::default(), window, cx)
 8249        })
 8250        .await
 8251        .unwrap();
 8252        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8253        project.update(cx, |project, cx| {
 8254            assert_eq!(
 8255                project.active_entry(),
 8256                project
 8257                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8258                    .map(|e| e.id)
 8259            );
 8260        });
 8261
 8262        // Add a project folder
 8263        project
 8264            .update(cx, |project, cx| {
 8265                project.find_or_create_worktree("root2", true, cx)
 8266            })
 8267            .await
 8268            .unwrap();
 8269        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8270
 8271        // Remove a project folder
 8272        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8273        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8274    }
 8275
 8276    #[gpui::test]
 8277    async fn test_close_window(cx: &mut TestAppContext) {
 8278        init_test(cx);
 8279
 8280        let fs = FakeFs::new(cx.executor());
 8281        fs.insert_tree("/root", json!({ "one": "" })).await;
 8282
 8283        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8284        let (workspace, cx) =
 8285            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8286
 8287        // When there are no dirty items, there's nothing to do.
 8288        let item1 = cx.new(TestItem::new);
 8289        workspace.update_in(cx, |w, window, cx| {
 8290            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8291        });
 8292        let task = workspace.update_in(cx, |w, window, cx| {
 8293            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8294        });
 8295        assert!(task.await.unwrap());
 8296
 8297        // When there are dirty untitled items, prompt to save each one. If the user
 8298        // cancels any prompt, then abort.
 8299        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8300        let item3 = cx.new(|cx| {
 8301            TestItem::new(cx)
 8302                .with_dirty(true)
 8303                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8304        });
 8305        workspace.update_in(cx, |w, window, cx| {
 8306            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8307            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8308        });
 8309        let task = workspace.update_in(cx, |w, window, cx| {
 8310            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8311        });
 8312        cx.executor().run_until_parked();
 8313        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8314        cx.executor().run_until_parked();
 8315        assert!(!cx.has_pending_prompt());
 8316        assert!(!task.await.unwrap());
 8317    }
 8318
 8319    #[gpui::test]
 8320    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8321        init_test(cx);
 8322
 8323        // Register TestItem as a serializable item
 8324        cx.update(|cx| {
 8325            register_serializable_item::<TestItem>(cx);
 8326        });
 8327
 8328        let fs = FakeFs::new(cx.executor());
 8329        fs.insert_tree("/root", json!({ "one": "" })).await;
 8330
 8331        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8332        let (workspace, cx) =
 8333            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8334
 8335        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8336        let item1 = cx.new(|cx| {
 8337            TestItem::new(cx)
 8338                .with_dirty(true)
 8339                .with_serialize(|| Some(Task::ready(Ok(()))))
 8340        });
 8341        let item2 = cx.new(|cx| {
 8342            TestItem::new(cx)
 8343                .with_dirty(true)
 8344                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8345                .with_serialize(|| Some(Task::ready(Ok(()))))
 8346        });
 8347        workspace.update_in(cx, |w, window, cx| {
 8348            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8349            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8350        });
 8351        let task = workspace.update_in(cx, |w, window, cx| {
 8352            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8353        });
 8354        assert!(task.await.unwrap());
 8355    }
 8356
 8357    #[gpui::test]
 8358    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8359        init_test(cx);
 8360
 8361        let fs = FakeFs::new(cx.executor());
 8362
 8363        let project = Project::test(fs, None, cx).await;
 8364        let (workspace, cx) =
 8365            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8366
 8367        let item1 = cx.new(|cx| {
 8368            TestItem::new(cx)
 8369                .with_dirty(true)
 8370                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8371        });
 8372        let item2 = cx.new(|cx| {
 8373            TestItem::new(cx)
 8374                .with_dirty(true)
 8375                .with_conflict(true)
 8376                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8377        });
 8378        let item3 = cx.new(|cx| {
 8379            TestItem::new(cx)
 8380                .with_dirty(true)
 8381                .with_conflict(true)
 8382                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8383        });
 8384        let item4 = cx.new(|cx| {
 8385            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8386                let project_item = TestProjectItem::new_untitled(cx);
 8387                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8388                project_item
 8389            }])
 8390        });
 8391        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8392            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8393            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8394            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8395            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8396            workspace.active_pane().clone()
 8397        });
 8398
 8399        let close_items = pane.update_in(cx, |pane, window, cx| {
 8400            pane.activate_item(1, true, true, window, cx);
 8401            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8402            let item1_id = item1.item_id();
 8403            let item3_id = item3.item_id();
 8404            let item4_id = item4.item_id();
 8405            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8406                [item1_id, item3_id, item4_id].contains(&id)
 8407            })
 8408        });
 8409        cx.executor().run_until_parked();
 8410
 8411        assert!(cx.has_pending_prompt());
 8412        cx.simulate_prompt_answer("Save all");
 8413
 8414        cx.executor().run_until_parked();
 8415
 8416        // Item 1 is saved. There's a prompt to save item 3.
 8417        pane.update(cx, |pane, cx| {
 8418            assert_eq!(item1.read(cx).save_count, 1);
 8419            assert_eq!(item1.read(cx).save_as_count, 0);
 8420            assert_eq!(item1.read(cx).reload_count, 0);
 8421            assert_eq!(pane.items_len(), 3);
 8422            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8423        });
 8424        assert!(cx.has_pending_prompt());
 8425
 8426        // Cancel saving item 3.
 8427        cx.simulate_prompt_answer("Discard");
 8428        cx.executor().run_until_parked();
 8429
 8430        // Item 3 is reloaded. There's a prompt to save item 4.
 8431        pane.update(cx, |pane, cx| {
 8432            assert_eq!(item3.read(cx).save_count, 0);
 8433            assert_eq!(item3.read(cx).save_as_count, 0);
 8434            assert_eq!(item3.read(cx).reload_count, 1);
 8435            assert_eq!(pane.items_len(), 2);
 8436            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8437        });
 8438
 8439        // There's a prompt for a path for item 4.
 8440        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8441        close_items.await.unwrap();
 8442
 8443        // The requested items are closed.
 8444        pane.update(cx, |pane, cx| {
 8445            assert_eq!(item4.read(cx).save_count, 0);
 8446            assert_eq!(item4.read(cx).save_as_count, 1);
 8447            assert_eq!(item4.read(cx).reload_count, 0);
 8448            assert_eq!(pane.items_len(), 1);
 8449            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8450        });
 8451    }
 8452
 8453    #[gpui::test]
 8454    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8455        init_test(cx);
 8456
 8457        let fs = FakeFs::new(cx.executor());
 8458        let project = Project::test(fs, [], cx).await;
 8459        let (workspace, cx) =
 8460            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8461
 8462        // Create several workspace items with single project entries, and two
 8463        // workspace items with multiple project entries.
 8464        let single_entry_items = (0..=4)
 8465            .map(|project_entry_id| {
 8466                cx.new(|cx| {
 8467                    TestItem::new(cx)
 8468                        .with_dirty(true)
 8469                        .with_project_items(&[dirty_project_item(
 8470                            project_entry_id,
 8471                            &format!("{project_entry_id}.txt"),
 8472                            cx,
 8473                        )])
 8474                })
 8475            })
 8476            .collect::<Vec<_>>();
 8477        let item_2_3 = cx.new(|cx| {
 8478            TestItem::new(cx)
 8479                .with_dirty(true)
 8480                .with_singleton(false)
 8481                .with_project_items(&[
 8482                    single_entry_items[2].read(cx).project_items[0].clone(),
 8483                    single_entry_items[3].read(cx).project_items[0].clone(),
 8484                ])
 8485        });
 8486        let item_3_4 = cx.new(|cx| {
 8487            TestItem::new(cx)
 8488                .with_dirty(true)
 8489                .with_singleton(false)
 8490                .with_project_items(&[
 8491                    single_entry_items[3].read(cx).project_items[0].clone(),
 8492                    single_entry_items[4].read(cx).project_items[0].clone(),
 8493                ])
 8494        });
 8495
 8496        // Create two panes that contain the following project entries:
 8497        //   left pane:
 8498        //     multi-entry items:   (2, 3)
 8499        //     single-entry items:  0, 2, 3, 4
 8500        //   right pane:
 8501        //     single-entry items:  4, 1
 8502        //     multi-entry items:   (3, 4)
 8503        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8504            let left_pane = workspace.active_pane().clone();
 8505            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8506            workspace.add_item_to_active_pane(
 8507                single_entry_items[0].boxed_clone(),
 8508                None,
 8509                true,
 8510                window,
 8511                cx,
 8512            );
 8513            workspace.add_item_to_active_pane(
 8514                single_entry_items[2].boxed_clone(),
 8515                None,
 8516                true,
 8517                window,
 8518                cx,
 8519            );
 8520            workspace.add_item_to_active_pane(
 8521                single_entry_items[3].boxed_clone(),
 8522                None,
 8523                true,
 8524                window,
 8525                cx,
 8526            );
 8527            workspace.add_item_to_active_pane(
 8528                single_entry_items[4].boxed_clone(),
 8529                None,
 8530                true,
 8531                window,
 8532                cx,
 8533            );
 8534
 8535            let right_pane = workspace
 8536                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8537                .unwrap();
 8538
 8539            right_pane.update(cx, |pane, cx| {
 8540                pane.add_item(
 8541                    single_entry_items[1].boxed_clone(),
 8542                    true,
 8543                    true,
 8544                    None,
 8545                    window,
 8546                    cx,
 8547                );
 8548                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8549            });
 8550
 8551            (left_pane, right_pane)
 8552        });
 8553
 8554        cx.focus(&right_pane);
 8555
 8556        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8557            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8558                .unwrap()
 8559        });
 8560        cx.executor().run_until_parked();
 8561
 8562        let msg = cx.pending_prompt().unwrap().0;
 8563        assert!(msg.contains("1.txt"));
 8564        assert!(!msg.contains("2.txt"));
 8565        assert!(!msg.contains("3.txt"));
 8566        assert!(!msg.contains("4.txt"));
 8567
 8568        cx.simulate_prompt_answer("Cancel");
 8569        close.await;
 8570
 8571        left_pane
 8572            .update_in(cx, |left_pane, window, cx| {
 8573                left_pane.close_item_by_id(
 8574                    single_entry_items[3].entity_id(),
 8575                    SaveIntent::Skip,
 8576                    window,
 8577                    cx,
 8578                )
 8579            })
 8580            .await
 8581            .unwrap();
 8582
 8583        close = right_pane.update_in(cx, |pane, window, cx| {
 8584            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8585                .unwrap()
 8586        });
 8587        cx.executor().run_until_parked();
 8588
 8589        let details = cx.pending_prompt().unwrap().1;
 8590        assert!(details.contains("1.txt"));
 8591        assert!(!details.contains("2.txt"));
 8592        assert!(details.contains("3.txt"));
 8593        // ideally this assertion could be made, but today we can only
 8594        // save whole items not project items, so the orphaned item 3 causes
 8595        // 4 to be saved too.
 8596        // assert!(!details.contains("4.txt"));
 8597
 8598        cx.simulate_prompt_answer("Save all");
 8599
 8600        cx.executor().run_until_parked();
 8601        close.await;
 8602        right_pane.read_with(cx, |pane, _| {
 8603            assert_eq!(pane.items_len(), 0);
 8604        });
 8605    }
 8606
 8607    #[gpui::test]
 8608    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8609        init_test(cx);
 8610
 8611        let fs = FakeFs::new(cx.executor());
 8612        let project = Project::test(fs, [], cx).await;
 8613        let (workspace, cx) =
 8614            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8615        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8616
 8617        let item = cx.new(|cx| {
 8618            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8619        });
 8620        let item_id = item.entity_id();
 8621        workspace.update_in(cx, |workspace, window, cx| {
 8622            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8623        });
 8624
 8625        // Autosave on window change.
 8626        item.update(cx, |item, cx| {
 8627            SettingsStore::update_global(cx, |settings, cx| {
 8628                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8629                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8630                })
 8631            });
 8632            item.is_dirty = true;
 8633        });
 8634
 8635        // Deactivating the window saves the file.
 8636        cx.deactivate_window();
 8637        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8638
 8639        // Re-activating the window doesn't save the file.
 8640        cx.update(|window, _| window.activate_window());
 8641        cx.executor().run_until_parked();
 8642        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8643
 8644        // Autosave on focus change.
 8645        item.update_in(cx, |item, window, cx| {
 8646            cx.focus_self(window);
 8647            SettingsStore::update_global(cx, |settings, cx| {
 8648                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8649                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8650                })
 8651            });
 8652            item.is_dirty = true;
 8653        });
 8654
 8655        // Blurring the item saves the file.
 8656        item.update_in(cx, |_, window, _| window.blur());
 8657        cx.executor().run_until_parked();
 8658        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8659
 8660        // Deactivating the window still saves the file.
 8661        item.update_in(cx, |item, window, cx| {
 8662            cx.focus_self(window);
 8663            item.is_dirty = true;
 8664        });
 8665        cx.deactivate_window();
 8666        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8667
 8668        // Autosave after delay.
 8669        item.update(cx, |item, cx| {
 8670            SettingsStore::update_global(cx, |settings, cx| {
 8671                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8672                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8673                })
 8674            });
 8675            item.is_dirty = true;
 8676            cx.emit(ItemEvent::Edit);
 8677        });
 8678
 8679        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8680        cx.executor().advance_clock(Duration::from_millis(250));
 8681        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8682
 8683        // After delay expires, the file is saved.
 8684        cx.executor().advance_clock(Duration::from_millis(250));
 8685        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8686
 8687        // Autosave on focus change, ensuring closing the tab counts as such.
 8688        item.update(cx, |item, cx| {
 8689            SettingsStore::update_global(cx, |settings, cx| {
 8690                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8691                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8692                })
 8693            });
 8694            item.is_dirty = true;
 8695            for project_item in &mut item.project_items {
 8696                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8697            }
 8698        });
 8699
 8700        pane.update_in(cx, |pane, window, cx| {
 8701            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8702        })
 8703        .await
 8704        .unwrap();
 8705        assert!(!cx.has_pending_prompt());
 8706        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8707
 8708        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8709        workspace.update_in(cx, |workspace, window, cx| {
 8710            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8711        });
 8712        item.update_in(cx, |item, window, cx| {
 8713            item.project_items[0].update(cx, |item, _| {
 8714                item.entry_id = None;
 8715            });
 8716            item.is_dirty = true;
 8717            window.blur();
 8718        });
 8719        cx.run_until_parked();
 8720        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8721
 8722        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8723        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8724            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8725        });
 8726        cx.run_until_parked();
 8727        assert!(cx.has_pending_prompt());
 8728        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8729    }
 8730
 8731    #[gpui::test]
 8732    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8733        init_test(cx);
 8734
 8735        let fs = FakeFs::new(cx.executor());
 8736
 8737        let project = Project::test(fs, [], cx).await;
 8738        let (workspace, cx) =
 8739            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8740
 8741        let item = cx.new(|cx| {
 8742            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8743        });
 8744        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8745        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8746        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8747
 8748        workspace.update_in(cx, |workspace, window, cx| {
 8749            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8750            let toolbar_notification_count = toolbar_notify_count.clone();
 8751            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8752                *toolbar_notification_count.borrow_mut() += 1
 8753            })
 8754            .detach();
 8755        });
 8756
 8757        pane.read_with(cx, |pane, _| {
 8758            assert!(!pane.can_navigate_backward());
 8759            assert!(!pane.can_navigate_forward());
 8760        });
 8761
 8762        item.update_in(cx, |item, _, cx| {
 8763            item.set_state("one".to_string(), cx);
 8764        });
 8765
 8766        // Toolbar must be notified to re-render the navigation buttons
 8767        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8768
 8769        pane.read_with(cx, |pane, _| {
 8770            assert!(pane.can_navigate_backward());
 8771            assert!(!pane.can_navigate_forward());
 8772        });
 8773
 8774        workspace
 8775            .update_in(cx, |workspace, window, cx| {
 8776                workspace.go_back(pane.downgrade(), window, cx)
 8777            })
 8778            .await
 8779            .unwrap();
 8780
 8781        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8782        pane.read_with(cx, |pane, _| {
 8783            assert!(!pane.can_navigate_backward());
 8784            assert!(pane.can_navigate_forward());
 8785        });
 8786    }
 8787
 8788    #[gpui::test]
 8789    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8790        init_test(cx);
 8791        let fs = FakeFs::new(cx.executor());
 8792
 8793        let project = Project::test(fs, [], cx).await;
 8794        let (workspace, cx) =
 8795            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8796
 8797        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8798            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8799            workspace.add_panel(panel.clone(), window, cx);
 8800
 8801            workspace
 8802                .right_dock()
 8803                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8804
 8805            panel
 8806        });
 8807
 8808        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8809        pane.update_in(cx, |pane, window, cx| {
 8810            let item = cx.new(TestItem::new);
 8811            pane.add_item(Box::new(item), true, true, None, window, cx);
 8812        });
 8813
 8814        // Transfer focus from center to panel
 8815        workspace.update_in(cx, |workspace, window, cx| {
 8816            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8817        });
 8818
 8819        workspace.update_in(cx, |workspace, window, cx| {
 8820            assert!(workspace.right_dock().read(cx).is_open());
 8821            assert!(!panel.is_zoomed(window, cx));
 8822            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8823        });
 8824
 8825        // Transfer focus from panel to center
 8826        workspace.update_in(cx, |workspace, window, cx| {
 8827            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8828        });
 8829
 8830        workspace.update_in(cx, |workspace, window, cx| {
 8831            assert!(workspace.right_dock().read(cx).is_open());
 8832            assert!(!panel.is_zoomed(window, cx));
 8833            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8834        });
 8835
 8836        // Close the dock
 8837        workspace.update_in(cx, |workspace, window, cx| {
 8838            workspace.toggle_dock(DockPosition::Right, window, cx);
 8839        });
 8840
 8841        workspace.update_in(cx, |workspace, window, cx| {
 8842            assert!(!workspace.right_dock().read(cx).is_open());
 8843            assert!(!panel.is_zoomed(window, cx));
 8844            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8845        });
 8846
 8847        // Open the dock
 8848        workspace.update_in(cx, |workspace, window, cx| {
 8849            workspace.toggle_dock(DockPosition::Right, window, cx);
 8850        });
 8851
 8852        workspace.update_in(cx, |workspace, window, cx| {
 8853            assert!(workspace.right_dock().read(cx).is_open());
 8854            assert!(!panel.is_zoomed(window, cx));
 8855            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8856        });
 8857
 8858        // Focus and zoom panel
 8859        panel.update_in(cx, |panel, window, cx| {
 8860            cx.focus_self(window);
 8861            panel.set_zoomed(true, window, cx)
 8862        });
 8863
 8864        workspace.update_in(cx, |workspace, window, cx| {
 8865            assert!(workspace.right_dock().read(cx).is_open());
 8866            assert!(panel.is_zoomed(window, cx));
 8867            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8868        });
 8869
 8870        // Transfer focus to the center closes the dock
 8871        workspace.update_in(cx, |workspace, window, cx| {
 8872            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8873        });
 8874
 8875        workspace.update_in(cx, |workspace, window, cx| {
 8876            assert!(!workspace.right_dock().read(cx).is_open());
 8877            assert!(panel.is_zoomed(window, cx));
 8878            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8879        });
 8880
 8881        // Transferring focus back to the panel keeps it zoomed
 8882        workspace.update_in(cx, |workspace, window, cx| {
 8883            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8884        });
 8885
 8886        workspace.update_in(cx, |workspace, window, cx| {
 8887            assert!(workspace.right_dock().read(cx).is_open());
 8888            assert!(panel.is_zoomed(window, cx));
 8889            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8890        });
 8891
 8892        // Close the dock while it is zoomed
 8893        workspace.update_in(cx, |workspace, window, cx| {
 8894            workspace.toggle_dock(DockPosition::Right, window, cx)
 8895        });
 8896
 8897        workspace.update_in(cx, |workspace, window, cx| {
 8898            assert!(!workspace.right_dock().read(cx).is_open());
 8899            assert!(panel.is_zoomed(window, cx));
 8900            assert!(workspace.zoomed.is_none());
 8901            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8902        });
 8903
 8904        // Opening the dock, when it's zoomed, retains focus
 8905        workspace.update_in(cx, |workspace, window, cx| {
 8906            workspace.toggle_dock(DockPosition::Right, window, cx)
 8907        });
 8908
 8909        workspace.update_in(cx, |workspace, window, cx| {
 8910            assert!(workspace.right_dock().read(cx).is_open());
 8911            assert!(panel.is_zoomed(window, cx));
 8912            assert!(workspace.zoomed.is_some());
 8913            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8914        });
 8915
 8916        // Unzoom and close the panel, zoom the active pane.
 8917        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8918        workspace.update_in(cx, |workspace, window, cx| {
 8919            workspace.toggle_dock(DockPosition::Right, window, cx)
 8920        });
 8921        pane.update_in(cx, |pane, window, cx| {
 8922            pane.toggle_zoom(&Default::default(), window, cx)
 8923        });
 8924
 8925        // Opening a dock unzooms the pane.
 8926        workspace.update_in(cx, |workspace, window, cx| {
 8927            workspace.toggle_dock(DockPosition::Right, window, cx)
 8928        });
 8929        workspace.update_in(cx, |workspace, window, cx| {
 8930            let pane = pane.read(cx);
 8931            assert!(!pane.is_zoomed());
 8932            assert!(!pane.focus_handle(cx).is_focused(window));
 8933            assert!(workspace.right_dock().read(cx).is_open());
 8934            assert!(workspace.zoomed.is_none());
 8935        });
 8936    }
 8937
 8938    #[gpui::test]
 8939    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8940        init_test(cx);
 8941
 8942        let fs = FakeFs::new(cx.executor());
 8943
 8944        let project = Project::test(fs, None, cx).await;
 8945        let (workspace, cx) =
 8946            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8947
 8948        // Let's arrange the panes like this:
 8949        //
 8950        // +-----------------------+
 8951        // |         top           |
 8952        // +------+--------+-------+
 8953        // | left | center | right |
 8954        // +------+--------+-------+
 8955        // |        bottom         |
 8956        // +-----------------------+
 8957
 8958        let top_item = cx.new(|cx| {
 8959            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 8960        });
 8961        let bottom_item = cx.new(|cx| {
 8962            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 8963        });
 8964        let left_item = cx.new(|cx| {
 8965            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 8966        });
 8967        let right_item = cx.new(|cx| {
 8968            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 8969        });
 8970        let center_item = cx.new(|cx| {
 8971            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 8972        });
 8973
 8974        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8975            let top_pane_id = workspace.active_pane().entity_id();
 8976            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 8977            workspace.split_pane(
 8978                workspace.active_pane().clone(),
 8979                SplitDirection::Down,
 8980                window,
 8981                cx,
 8982            );
 8983            top_pane_id
 8984        });
 8985        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8986            let bottom_pane_id = workspace.active_pane().entity_id();
 8987            workspace.add_item_to_active_pane(
 8988                Box::new(bottom_item.clone()),
 8989                None,
 8990                false,
 8991                window,
 8992                cx,
 8993            );
 8994            workspace.split_pane(
 8995                workspace.active_pane().clone(),
 8996                SplitDirection::Up,
 8997                window,
 8998                cx,
 8999            );
 9000            bottom_pane_id
 9001        });
 9002        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9003            let left_pane_id = workspace.active_pane().entity_id();
 9004            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9005            workspace.split_pane(
 9006                workspace.active_pane().clone(),
 9007                SplitDirection::Right,
 9008                window,
 9009                cx,
 9010            );
 9011            left_pane_id
 9012        });
 9013        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9014            let right_pane_id = workspace.active_pane().entity_id();
 9015            workspace.add_item_to_active_pane(
 9016                Box::new(right_item.clone()),
 9017                None,
 9018                false,
 9019                window,
 9020                cx,
 9021            );
 9022            workspace.split_pane(
 9023                workspace.active_pane().clone(),
 9024                SplitDirection::Left,
 9025                window,
 9026                cx,
 9027            );
 9028            right_pane_id
 9029        });
 9030        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9031            let center_pane_id = workspace.active_pane().entity_id();
 9032            workspace.add_item_to_active_pane(
 9033                Box::new(center_item.clone()),
 9034                None,
 9035                false,
 9036                window,
 9037                cx,
 9038            );
 9039            center_pane_id
 9040        });
 9041        cx.executor().run_until_parked();
 9042
 9043        workspace.update_in(cx, |workspace, window, cx| {
 9044            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9045
 9046            // Join into next from center pane into right
 9047            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9048        });
 9049
 9050        workspace.update_in(cx, |workspace, window, cx| {
 9051            let active_pane = workspace.active_pane();
 9052            assert_eq!(right_pane_id, active_pane.entity_id());
 9053            assert_eq!(2, active_pane.read(cx).items_len());
 9054            let item_ids_in_pane =
 9055                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9056            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9057            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9058
 9059            // Join into next from right pane into bottom
 9060            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9061        });
 9062
 9063        workspace.update_in(cx, |workspace, window, cx| {
 9064            let active_pane = workspace.active_pane();
 9065            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9066            assert_eq!(3, active_pane.read(cx).items_len());
 9067            let item_ids_in_pane =
 9068                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9069            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9070            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9071            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9072
 9073            // Join into next from bottom pane into left
 9074            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9075        });
 9076
 9077        workspace.update_in(cx, |workspace, window, cx| {
 9078            let active_pane = workspace.active_pane();
 9079            assert_eq!(left_pane_id, active_pane.entity_id());
 9080            assert_eq!(4, active_pane.read(cx).items_len());
 9081            let item_ids_in_pane =
 9082                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9083            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9084            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9085            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9086            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9087
 9088            // Join into next from left pane into top
 9089            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9090        });
 9091
 9092        workspace.update_in(cx, |workspace, window, cx| {
 9093            let active_pane = workspace.active_pane();
 9094            assert_eq!(top_pane_id, active_pane.entity_id());
 9095            assert_eq!(5, active_pane.read(cx).items_len());
 9096            let item_ids_in_pane =
 9097                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9098            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9099            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9100            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9101            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9102            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9103
 9104            // Single pane left: no-op
 9105            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9106        });
 9107
 9108        workspace.update(cx, |workspace, _cx| {
 9109            let active_pane = workspace.active_pane();
 9110            assert_eq!(top_pane_id, active_pane.entity_id());
 9111        });
 9112    }
 9113
 9114    fn add_an_item_to_active_pane(
 9115        cx: &mut VisualTestContext,
 9116        workspace: &Entity<Workspace>,
 9117        item_id: u64,
 9118    ) -> Entity<TestItem> {
 9119        let item = cx.new(|cx| {
 9120            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9121                item_id,
 9122                "item{item_id}.txt",
 9123                cx,
 9124            )])
 9125        });
 9126        workspace.update_in(cx, |workspace, window, cx| {
 9127            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9128        });
 9129        return item;
 9130    }
 9131
 9132    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9133        return workspace.update_in(cx, |workspace, window, cx| {
 9134            let new_pane = workspace.split_pane(
 9135                workspace.active_pane().clone(),
 9136                SplitDirection::Right,
 9137                window,
 9138                cx,
 9139            );
 9140            new_pane
 9141        });
 9142    }
 9143
 9144    #[gpui::test]
 9145    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9146        init_test(cx);
 9147        let fs = FakeFs::new(cx.executor());
 9148        let project = Project::test(fs, None, cx).await;
 9149        let (workspace, cx) =
 9150            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9151
 9152        add_an_item_to_active_pane(cx, &workspace, 1);
 9153        split_pane(cx, &workspace);
 9154        add_an_item_to_active_pane(cx, &workspace, 2);
 9155        split_pane(cx, &workspace); // empty pane
 9156        split_pane(cx, &workspace);
 9157        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9158
 9159        cx.executor().run_until_parked();
 9160
 9161        workspace.update(cx, |workspace, cx| {
 9162            let num_panes = workspace.panes().len();
 9163            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9164            let active_item = workspace
 9165                .active_pane()
 9166                .read(cx)
 9167                .active_item()
 9168                .expect("item is in focus");
 9169
 9170            assert_eq!(num_panes, 4);
 9171            assert_eq!(num_items_in_current_pane, 1);
 9172            assert_eq!(active_item.item_id(), last_item.item_id());
 9173        });
 9174
 9175        workspace.update_in(cx, |workspace, window, cx| {
 9176            workspace.join_all_panes(window, cx);
 9177        });
 9178
 9179        workspace.update(cx, |workspace, cx| {
 9180            let num_panes = workspace.panes().len();
 9181            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9182            let active_item = workspace
 9183                .active_pane()
 9184                .read(cx)
 9185                .active_item()
 9186                .expect("item is in focus");
 9187
 9188            assert_eq!(num_panes, 1);
 9189            assert_eq!(num_items_in_current_pane, 3);
 9190            assert_eq!(active_item.item_id(), last_item.item_id());
 9191        });
 9192    }
 9193    struct TestModal(FocusHandle);
 9194
 9195    impl TestModal {
 9196        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9197            Self(cx.focus_handle())
 9198        }
 9199    }
 9200
 9201    impl EventEmitter<DismissEvent> for TestModal {}
 9202
 9203    impl Focusable for TestModal {
 9204        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9205            self.0.clone()
 9206        }
 9207    }
 9208
 9209    impl ModalView for TestModal {}
 9210
 9211    impl Render for TestModal {
 9212        fn render(
 9213            &mut self,
 9214            _window: &mut Window,
 9215            _cx: &mut Context<TestModal>,
 9216        ) -> impl IntoElement {
 9217            div().track_focus(&self.0)
 9218        }
 9219    }
 9220
 9221    #[gpui::test]
 9222    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9223        init_test(cx);
 9224        let fs = FakeFs::new(cx.executor());
 9225
 9226        let project = Project::test(fs, [], cx).await;
 9227        let (workspace, cx) =
 9228            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9229
 9230        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9231            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9232            workspace.add_panel(panel_1.clone(), window, cx);
 9233            workspace.toggle_dock(DockPosition::Left, window, cx);
 9234            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9235            workspace.add_panel(panel_2.clone(), window, cx);
 9236            workspace.toggle_dock(DockPosition::Right, window, cx);
 9237
 9238            let left_dock = workspace.left_dock();
 9239            assert_eq!(
 9240                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9241                panel_1.panel_id()
 9242            );
 9243            assert_eq!(
 9244                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9245                panel_1.size(window, cx)
 9246            );
 9247
 9248            left_dock.update(cx, |left_dock, cx| {
 9249                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9250            });
 9251            assert_eq!(
 9252                workspace
 9253                    .right_dock()
 9254                    .read(cx)
 9255                    .visible_panel()
 9256                    .unwrap()
 9257                    .panel_id(),
 9258                panel_2.panel_id(),
 9259            );
 9260
 9261            (panel_1, panel_2)
 9262        });
 9263
 9264        // Move panel_1 to the right
 9265        panel_1.update_in(cx, |panel_1, window, cx| {
 9266            panel_1.set_position(DockPosition::Right, window, cx)
 9267        });
 9268
 9269        workspace.update_in(cx, |workspace, window, cx| {
 9270            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9271            // Since it was the only panel on the left, the left dock should now be closed.
 9272            assert!(!workspace.left_dock().read(cx).is_open());
 9273            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9274            let right_dock = workspace.right_dock();
 9275            assert_eq!(
 9276                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9277                panel_1.panel_id()
 9278            );
 9279            assert_eq!(
 9280                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9281                px(1337.)
 9282            );
 9283
 9284            // Now we move panel_2 to the left
 9285            panel_2.set_position(DockPosition::Left, window, cx);
 9286        });
 9287
 9288        workspace.update(cx, |workspace, cx| {
 9289            // Since panel_2 was not visible on the right, we don't open the left dock.
 9290            assert!(!workspace.left_dock().read(cx).is_open());
 9291            // And the right dock is unaffected in its displaying of panel_1
 9292            assert!(workspace.right_dock().read(cx).is_open());
 9293            assert_eq!(
 9294                workspace
 9295                    .right_dock()
 9296                    .read(cx)
 9297                    .visible_panel()
 9298                    .unwrap()
 9299                    .panel_id(),
 9300                panel_1.panel_id(),
 9301            );
 9302        });
 9303
 9304        // Move panel_1 back to the left
 9305        panel_1.update_in(cx, |panel_1, window, cx| {
 9306            panel_1.set_position(DockPosition::Left, window, cx)
 9307        });
 9308
 9309        workspace.update_in(cx, |workspace, window, cx| {
 9310            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9311            let left_dock = workspace.left_dock();
 9312            assert!(left_dock.read(cx).is_open());
 9313            assert_eq!(
 9314                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9315                panel_1.panel_id()
 9316            );
 9317            assert_eq!(
 9318                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9319                px(1337.)
 9320            );
 9321            // And the right dock should be closed as it no longer has any panels.
 9322            assert!(!workspace.right_dock().read(cx).is_open());
 9323
 9324            // Now we move panel_1 to the bottom
 9325            panel_1.set_position(DockPosition::Bottom, window, cx);
 9326        });
 9327
 9328        workspace.update_in(cx, |workspace, window, cx| {
 9329            // Since panel_1 was visible on the left, we close the left dock.
 9330            assert!(!workspace.left_dock().read(cx).is_open());
 9331            // The bottom dock is sized based on the panel's default size,
 9332            // since the panel orientation changed from vertical to horizontal.
 9333            let bottom_dock = workspace.bottom_dock();
 9334            assert_eq!(
 9335                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9336                panel_1.size(window, cx),
 9337            );
 9338            // Close bottom dock and move panel_1 back to the left.
 9339            bottom_dock.update(cx, |bottom_dock, cx| {
 9340                bottom_dock.set_open(false, window, cx)
 9341            });
 9342            panel_1.set_position(DockPosition::Left, window, cx);
 9343        });
 9344
 9345        // Emit activated event on panel 1
 9346        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9347
 9348        // Now the left dock is open and panel_1 is active and focused.
 9349        workspace.update_in(cx, |workspace, window, cx| {
 9350            let left_dock = workspace.left_dock();
 9351            assert!(left_dock.read(cx).is_open());
 9352            assert_eq!(
 9353                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9354                panel_1.panel_id(),
 9355            );
 9356            assert!(panel_1.focus_handle(cx).is_focused(window));
 9357        });
 9358
 9359        // Emit closed event on panel 2, which is not active
 9360        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9361
 9362        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9363        workspace.update(cx, |workspace, cx| {
 9364            let left_dock = workspace.left_dock();
 9365            assert!(left_dock.read(cx).is_open());
 9366            assert_eq!(
 9367                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9368                panel_1.panel_id(),
 9369            );
 9370        });
 9371
 9372        // Emitting a ZoomIn event shows the panel as zoomed.
 9373        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9374        workspace.read_with(cx, |workspace, _| {
 9375            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9376            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9377        });
 9378
 9379        // Move panel to another dock while it is zoomed
 9380        panel_1.update_in(cx, |panel, window, cx| {
 9381            panel.set_position(DockPosition::Right, window, cx)
 9382        });
 9383        workspace.read_with(cx, |workspace, _| {
 9384            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9385
 9386            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9387        });
 9388
 9389        // This is a helper for getting a:
 9390        // - valid focus on an element,
 9391        // - that isn't a part of the panes and panels system of the Workspace,
 9392        // - and doesn't trigger the 'on_focus_lost' API.
 9393        let focus_other_view = {
 9394            let workspace = workspace.clone();
 9395            move |cx: &mut VisualTestContext| {
 9396                workspace.update_in(cx, |workspace, window, cx| {
 9397                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
 9398                        workspace.toggle_modal(window, cx, TestModal::new);
 9399                        workspace.toggle_modal(window, cx, TestModal::new);
 9400                    } else {
 9401                        workspace.toggle_modal(window, cx, TestModal::new);
 9402                    }
 9403                })
 9404            }
 9405        };
 9406
 9407        // If focus is transferred to another view that's not a panel or another pane, we still show
 9408        // the panel as zoomed.
 9409        focus_other_view(cx);
 9410        workspace.read_with(cx, |workspace, _| {
 9411            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9412            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9413        });
 9414
 9415        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9416        workspace.update_in(cx, |_workspace, window, cx| {
 9417            cx.focus_self(window);
 9418        });
 9419        workspace.read_with(cx, |workspace, _| {
 9420            assert_eq!(workspace.zoomed, None);
 9421            assert_eq!(workspace.zoomed_position, None);
 9422        });
 9423
 9424        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9425        // show the panel as zoomed because it wasn't zoomed before.
 9426        focus_other_view(cx);
 9427        workspace.read_with(cx, |workspace, _| {
 9428            assert_eq!(workspace.zoomed, None);
 9429            assert_eq!(workspace.zoomed_position, None);
 9430        });
 9431
 9432        // When the panel is activated, it is zoomed again.
 9433        cx.dispatch_action(ToggleRightDock);
 9434        workspace.read_with(cx, |workspace, _| {
 9435            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9436            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9437        });
 9438
 9439        // Emitting a ZoomOut event unzooms the panel.
 9440        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9441        workspace.read_with(cx, |workspace, _| {
 9442            assert_eq!(workspace.zoomed, None);
 9443            assert_eq!(workspace.zoomed_position, None);
 9444        });
 9445
 9446        // Emit closed event on panel 1, which is active
 9447        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9448
 9449        // Now the left dock is closed, because panel_1 was the active panel
 9450        workspace.update(cx, |workspace, cx| {
 9451            let right_dock = workspace.right_dock();
 9452            assert!(!right_dock.read(cx).is_open());
 9453        });
 9454    }
 9455
 9456    #[gpui::test]
 9457    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9458        init_test(cx);
 9459
 9460        let fs = FakeFs::new(cx.background_executor.clone());
 9461        let project = Project::test(fs, [], cx).await;
 9462        let (workspace, cx) =
 9463            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9464        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9465
 9466        let dirty_regular_buffer = cx.new(|cx| {
 9467            TestItem::new(cx)
 9468                .with_dirty(true)
 9469                .with_label("1.txt")
 9470                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9471        });
 9472        let dirty_regular_buffer_2 = cx.new(|cx| {
 9473            TestItem::new(cx)
 9474                .with_dirty(true)
 9475                .with_label("2.txt")
 9476                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9477        });
 9478        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9479            TestItem::new(cx)
 9480                .with_dirty(true)
 9481                .with_singleton(false)
 9482                .with_label("Fake Project Search")
 9483                .with_project_items(&[
 9484                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9485                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9486                ])
 9487        });
 9488        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9489        workspace.update_in(cx, |workspace, window, cx| {
 9490            workspace.add_item(
 9491                pane.clone(),
 9492                Box::new(dirty_regular_buffer.clone()),
 9493                None,
 9494                false,
 9495                false,
 9496                window,
 9497                cx,
 9498            );
 9499            workspace.add_item(
 9500                pane.clone(),
 9501                Box::new(dirty_regular_buffer_2.clone()),
 9502                None,
 9503                false,
 9504                false,
 9505                window,
 9506                cx,
 9507            );
 9508            workspace.add_item(
 9509                pane.clone(),
 9510                Box::new(dirty_multi_buffer_with_both.clone()),
 9511                None,
 9512                false,
 9513                false,
 9514                window,
 9515                cx,
 9516            );
 9517        });
 9518
 9519        pane.update_in(cx, |pane, window, cx| {
 9520            pane.activate_item(2, true, true, window, cx);
 9521            assert_eq!(
 9522                pane.active_item().unwrap().item_id(),
 9523                multi_buffer_with_both_files_id,
 9524                "Should select the multi buffer in the pane"
 9525            );
 9526        });
 9527        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9528            pane.close_other_items(
 9529                &CloseOtherItems {
 9530                    save_intent: Some(SaveIntent::Save),
 9531                    close_pinned: true,
 9532                },
 9533                None,
 9534                window,
 9535                cx,
 9536            )
 9537        });
 9538        cx.background_executor.run_until_parked();
 9539        assert!(!cx.has_pending_prompt());
 9540        close_all_but_multi_buffer_task
 9541            .await
 9542            .expect("Closing all buffers but the multi buffer failed");
 9543        pane.update(cx, |pane, cx| {
 9544            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9545            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9546            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9547            assert_eq!(pane.items_len(), 1);
 9548            assert_eq!(
 9549                pane.active_item().unwrap().item_id(),
 9550                multi_buffer_with_both_files_id,
 9551                "Should have only the multi buffer left in the pane"
 9552            );
 9553            assert!(
 9554                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9555                "The multi buffer containing the unsaved buffer should still be dirty"
 9556            );
 9557        });
 9558
 9559        dirty_regular_buffer.update(cx, |buffer, cx| {
 9560            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9561        });
 9562
 9563        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9564            pane.close_active_item(
 9565                &CloseActiveItem {
 9566                    save_intent: Some(SaveIntent::Close),
 9567                    close_pinned: false,
 9568                },
 9569                window,
 9570                cx,
 9571            )
 9572        });
 9573        cx.background_executor.run_until_parked();
 9574        assert!(
 9575            cx.has_pending_prompt(),
 9576            "Dirty multi buffer should prompt a save dialog"
 9577        );
 9578        cx.simulate_prompt_answer("Save");
 9579        cx.background_executor.run_until_parked();
 9580        close_multi_buffer_task
 9581            .await
 9582            .expect("Closing the multi buffer failed");
 9583        pane.update(cx, |pane, cx| {
 9584            assert_eq!(
 9585                dirty_multi_buffer_with_both.read(cx).save_count,
 9586                1,
 9587                "Multi buffer item should get be saved"
 9588            );
 9589            // Test impl does not save inner items, so we do not assert them
 9590            assert_eq!(
 9591                pane.items_len(),
 9592                0,
 9593                "No more items should be left in the pane"
 9594            );
 9595            assert!(pane.active_item().is_none());
 9596        });
 9597    }
 9598
 9599    #[gpui::test]
 9600    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9601        cx: &mut TestAppContext,
 9602    ) {
 9603        init_test(cx);
 9604
 9605        let fs = FakeFs::new(cx.background_executor.clone());
 9606        let project = Project::test(fs, [], cx).await;
 9607        let (workspace, cx) =
 9608            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9609        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9610
 9611        let dirty_regular_buffer = cx.new(|cx| {
 9612            TestItem::new(cx)
 9613                .with_dirty(true)
 9614                .with_label("1.txt")
 9615                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9616        });
 9617        let dirty_regular_buffer_2 = cx.new(|cx| {
 9618            TestItem::new(cx)
 9619                .with_dirty(true)
 9620                .with_label("2.txt")
 9621                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9622        });
 9623        let clear_regular_buffer = cx.new(|cx| {
 9624            TestItem::new(cx)
 9625                .with_label("3.txt")
 9626                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9627        });
 9628
 9629        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9630            TestItem::new(cx)
 9631                .with_dirty(true)
 9632                .with_singleton(false)
 9633                .with_label("Fake Project Search")
 9634                .with_project_items(&[
 9635                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9636                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9637                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9638                ])
 9639        });
 9640        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9641        workspace.update_in(cx, |workspace, window, cx| {
 9642            workspace.add_item(
 9643                pane.clone(),
 9644                Box::new(dirty_regular_buffer.clone()),
 9645                None,
 9646                false,
 9647                false,
 9648                window,
 9649                cx,
 9650            );
 9651            workspace.add_item(
 9652                pane.clone(),
 9653                Box::new(dirty_multi_buffer_with_both.clone()),
 9654                None,
 9655                false,
 9656                false,
 9657                window,
 9658                cx,
 9659            );
 9660        });
 9661
 9662        pane.update_in(cx, |pane, window, cx| {
 9663            pane.activate_item(1, true, true, window, cx);
 9664            assert_eq!(
 9665                pane.active_item().unwrap().item_id(),
 9666                multi_buffer_with_both_files_id,
 9667                "Should select the multi buffer in the pane"
 9668            );
 9669        });
 9670        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9671            pane.close_active_item(
 9672                &CloseActiveItem {
 9673                    save_intent: None,
 9674                    close_pinned: false,
 9675                },
 9676                window,
 9677                cx,
 9678            )
 9679        });
 9680        cx.background_executor.run_until_parked();
 9681        assert!(
 9682            cx.has_pending_prompt(),
 9683            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9684        );
 9685    }
 9686
 9687    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9688    /// closed when they are deleted from disk.
 9689    #[gpui::test]
 9690    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9691        init_test(cx);
 9692
 9693        // Enable the close_on_disk_deletion setting
 9694        cx.update_global(|store: &mut SettingsStore, cx| {
 9695            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9696                settings.close_on_file_delete = Some(true);
 9697            });
 9698        });
 9699
 9700        let fs = FakeFs::new(cx.background_executor.clone());
 9701        let project = Project::test(fs, [], cx).await;
 9702        let (workspace, cx) =
 9703            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9704        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9705
 9706        // Create a test item that simulates a file
 9707        let item = cx.new(|cx| {
 9708            TestItem::new(cx)
 9709                .with_label("test.txt")
 9710                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9711        });
 9712
 9713        // Add item to workspace
 9714        workspace.update_in(cx, |workspace, window, cx| {
 9715            workspace.add_item(
 9716                pane.clone(),
 9717                Box::new(item.clone()),
 9718                None,
 9719                false,
 9720                false,
 9721                window,
 9722                cx,
 9723            );
 9724        });
 9725
 9726        // Verify the item is in the pane
 9727        pane.read_with(cx, |pane, _| {
 9728            assert_eq!(pane.items().count(), 1);
 9729        });
 9730
 9731        // Simulate file deletion by setting the item's deleted state
 9732        item.update(cx, |item, _| {
 9733            item.set_has_deleted_file(true);
 9734        });
 9735
 9736        // Emit UpdateTab event to trigger the close behavior
 9737        cx.run_until_parked();
 9738        item.update(cx, |_, cx| {
 9739            cx.emit(ItemEvent::UpdateTab);
 9740        });
 9741
 9742        // Allow the close operation to complete
 9743        cx.run_until_parked();
 9744
 9745        // Verify the item was automatically closed
 9746        pane.read_with(cx, |pane, _| {
 9747            assert_eq!(
 9748                pane.items().count(),
 9749                0,
 9750                "Item should be automatically closed when file is deleted"
 9751            );
 9752        });
 9753    }
 9754
 9755    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9756    /// open with a strikethrough when they are deleted from disk.
 9757    #[gpui::test]
 9758    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9759        init_test(cx);
 9760
 9761        // Ensure close_on_disk_deletion is disabled (default)
 9762        cx.update_global(|store: &mut SettingsStore, cx| {
 9763            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9764                settings.close_on_file_delete = Some(false);
 9765            });
 9766        });
 9767
 9768        let fs = FakeFs::new(cx.background_executor.clone());
 9769        let project = Project::test(fs, [], cx).await;
 9770        let (workspace, cx) =
 9771            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9772        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9773
 9774        // Create a test item that simulates a file
 9775        let item = cx.new(|cx| {
 9776            TestItem::new(cx)
 9777                .with_label("test.txt")
 9778                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9779        });
 9780
 9781        // Add item to workspace
 9782        workspace.update_in(cx, |workspace, window, cx| {
 9783            workspace.add_item(
 9784                pane.clone(),
 9785                Box::new(item.clone()),
 9786                None,
 9787                false,
 9788                false,
 9789                window,
 9790                cx,
 9791            );
 9792        });
 9793
 9794        // Verify the item is in the pane
 9795        pane.read_with(cx, |pane, _| {
 9796            assert_eq!(pane.items().count(), 1);
 9797        });
 9798
 9799        // Simulate file deletion
 9800        item.update(cx, |item, _| {
 9801            item.set_has_deleted_file(true);
 9802        });
 9803
 9804        // Emit UpdateTab event
 9805        cx.run_until_parked();
 9806        item.update(cx, |_, cx| {
 9807            cx.emit(ItemEvent::UpdateTab);
 9808        });
 9809
 9810        // Allow any potential close operation to complete
 9811        cx.run_until_parked();
 9812
 9813        // Verify the item remains open (with strikethrough)
 9814        pane.read_with(cx, |pane, _| {
 9815            assert_eq!(
 9816                pane.items().count(),
 9817                1,
 9818                "Item should remain open when close_on_disk_deletion is disabled"
 9819            );
 9820        });
 9821
 9822        // Verify the item shows as deleted
 9823        item.read_with(cx, |item, _| {
 9824            assert!(
 9825                item.has_deleted_file,
 9826                "Item should be marked as having deleted file"
 9827            );
 9828        });
 9829    }
 9830
 9831    /// Tests that dirty files are not automatically closed when deleted from disk,
 9832    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9833    /// unsaved changes without being prompted.
 9834    #[gpui::test]
 9835    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9836        init_test(cx);
 9837
 9838        // Enable the close_on_file_delete setting
 9839        cx.update_global(|store: &mut SettingsStore, cx| {
 9840            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9841                settings.close_on_file_delete = Some(true);
 9842            });
 9843        });
 9844
 9845        let fs = FakeFs::new(cx.background_executor.clone());
 9846        let project = Project::test(fs, [], cx).await;
 9847        let (workspace, cx) =
 9848            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9849        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9850
 9851        // Create a dirty test item
 9852        let item = cx.new(|cx| {
 9853            TestItem::new(cx)
 9854                .with_dirty(true)
 9855                .with_label("test.txt")
 9856                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9857        });
 9858
 9859        // Add item to workspace
 9860        workspace.update_in(cx, |workspace, window, cx| {
 9861            workspace.add_item(
 9862                pane.clone(),
 9863                Box::new(item.clone()),
 9864                None,
 9865                false,
 9866                false,
 9867                window,
 9868                cx,
 9869            );
 9870        });
 9871
 9872        // Simulate file deletion
 9873        item.update(cx, |item, _| {
 9874            item.set_has_deleted_file(true);
 9875        });
 9876
 9877        // Emit UpdateTab event to trigger the close behavior
 9878        cx.run_until_parked();
 9879        item.update(cx, |_, cx| {
 9880            cx.emit(ItemEvent::UpdateTab);
 9881        });
 9882
 9883        // Allow any potential close operation to complete
 9884        cx.run_until_parked();
 9885
 9886        // Verify the item remains open (dirty files are not auto-closed)
 9887        pane.read_with(cx, |pane, _| {
 9888            assert_eq!(
 9889                pane.items().count(),
 9890                1,
 9891                "Dirty items should not be automatically closed even when file is deleted"
 9892            );
 9893        });
 9894
 9895        // Verify the item is marked as deleted and still dirty
 9896        item.read_with(cx, |item, _| {
 9897            assert!(
 9898                item.has_deleted_file,
 9899                "Item should be marked as having deleted file"
 9900            );
 9901            assert!(item.is_dirty, "Item should still be dirty");
 9902        });
 9903    }
 9904
 9905    /// Tests that navigation history is cleaned up when files are auto-closed
 9906    /// due to deletion from disk.
 9907    #[gpui::test]
 9908    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9909        init_test(cx);
 9910
 9911        // Enable the close_on_file_delete setting
 9912        cx.update_global(|store: &mut SettingsStore, cx| {
 9913            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9914                settings.close_on_file_delete = Some(true);
 9915            });
 9916        });
 9917
 9918        let fs = FakeFs::new(cx.background_executor.clone());
 9919        let project = Project::test(fs, [], cx).await;
 9920        let (workspace, cx) =
 9921            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9922        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9923
 9924        // Create test items
 9925        let item1 = cx.new(|cx| {
 9926            TestItem::new(cx)
 9927                .with_label("test1.txt")
 9928                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9929        });
 9930        let item1_id = item1.item_id();
 9931
 9932        let item2 = cx.new(|cx| {
 9933            TestItem::new(cx)
 9934                .with_label("test2.txt")
 9935                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9936        });
 9937
 9938        // Add items to workspace
 9939        workspace.update_in(cx, |workspace, window, cx| {
 9940            workspace.add_item(
 9941                pane.clone(),
 9942                Box::new(item1.clone()),
 9943                None,
 9944                false,
 9945                false,
 9946                window,
 9947                cx,
 9948            );
 9949            workspace.add_item(
 9950                pane.clone(),
 9951                Box::new(item2.clone()),
 9952                None,
 9953                false,
 9954                false,
 9955                window,
 9956                cx,
 9957            );
 9958        });
 9959
 9960        // Activate item1 to ensure it gets navigation entries
 9961        pane.update_in(cx, |pane, window, cx| {
 9962            pane.activate_item(0, true, true, window, cx);
 9963        });
 9964
 9965        // Switch to item2 and back to create navigation history
 9966        pane.update_in(cx, |pane, window, cx| {
 9967            pane.activate_item(1, true, true, window, cx);
 9968        });
 9969        cx.run_until_parked();
 9970
 9971        pane.update_in(cx, |pane, window, cx| {
 9972            pane.activate_item(0, true, true, window, cx);
 9973        });
 9974        cx.run_until_parked();
 9975
 9976        // Simulate file deletion for item1
 9977        item1.update(cx, |item, _| {
 9978            item.set_has_deleted_file(true);
 9979        });
 9980
 9981        // Emit UpdateTab event to trigger the close behavior
 9982        item1.update(cx, |_, cx| {
 9983            cx.emit(ItemEvent::UpdateTab);
 9984        });
 9985        cx.run_until_parked();
 9986
 9987        // Verify item1 was closed
 9988        pane.read_with(cx, |pane, _| {
 9989            assert_eq!(
 9990                pane.items().count(),
 9991                1,
 9992                "Should have 1 item remaining after auto-close"
 9993            );
 9994        });
 9995
 9996        // Check navigation history after close
 9997        let has_item = pane.read_with(cx, |pane, cx| {
 9998            let mut has_item = false;
 9999            pane.nav_history().for_each_entry(cx, |entry, _| {
10000                if entry.item.id() == item1_id {
10001                    has_item = true;
10002                }
10003            });
10004            has_item
10005        });
10006
10007        assert!(
10008            !has_item,
10009            "Navigation history should not contain closed item entries"
10010        );
10011    }
10012
10013    #[gpui::test]
10014    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10015        cx: &mut TestAppContext,
10016    ) {
10017        init_test(cx);
10018
10019        let fs = FakeFs::new(cx.background_executor.clone());
10020        let project = Project::test(fs, [], cx).await;
10021        let (workspace, cx) =
10022            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10023        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10024
10025        let dirty_regular_buffer = cx.new(|cx| {
10026            TestItem::new(cx)
10027                .with_dirty(true)
10028                .with_label("1.txt")
10029                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10030        });
10031        let dirty_regular_buffer_2 = cx.new(|cx| {
10032            TestItem::new(cx)
10033                .with_dirty(true)
10034                .with_label("2.txt")
10035                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10036        });
10037        let clear_regular_buffer = cx.new(|cx| {
10038            TestItem::new(cx)
10039                .with_label("3.txt")
10040                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10041        });
10042
10043        let dirty_multi_buffer = cx.new(|cx| {
10044            TestItem::new(cx)
10045                .with_dirty(true)
10046                .with_singleton(false)
10047                .with_label("Fake Project Search")
10048                .with_project_items(&[
10049                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10050                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10051                    clear_regular_buffer.read(cx).project_items[0].clone(),
10052                ])
10053        });
10054        workspace.update_in(cx, |workspace, window, cx| {
10055            workspace.add_item(
10056                pane.clone(),
10057                Box::new(dirty_regular_buffer.clone()),
10058                None,
10059                false,
10060                false,
10061                window,
10062                cx,
10063            );
10064            workspace.add_item(
10065                pane.clone(),
10066                Box::new(dirty_regular_buffer_2.clone()),
10067                None,
10068                false,
10069                false,
10070                window,
10071                cx,
10072            );
10073            workspace.add_item(
10074                pane.clone(),
10075                Box::new(dirty_multi_buffer.clone()),
10076                None,
10077                false,
10078                false,
10079                window,
10080                cx,
10081            );
10082        });
10083
10084        pane.update_in(cx, |pane, window, cx| {
10085            pane.activate_item(2, true, true, window, cx);
10086            assert_eq!(
10087                pane.active_item().unwrap().item_id(),
10088                dirty_multi_buffer.item_id(),
10089                "Should select the multi buffer in the pane"
10090            );
10091        });
10092        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10093            pane.close_active_item(
10094                &CloseActiveItem {
10095                    save_intent: None,
10096                    close_pinned: false,
10097                },
10098                window,
10099                cx,
10100            )
10101        });
10102        cx.background_executor.run_until_parked();
10103        assert!(
10104            !cx.has_pending_prompt(),
10105            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10106        );
10107        close_multi_buffer_task
10108            .await
10109            .expect("Closing multi buffer failed");
10110        pane.update(cx, |pane, cx| {
10111            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10112            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10113            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10114            assert_eq!(
10115                pane.items()
10116                    .map(|item| item.item_id())
10117                    .sorted()
10118                    .collect::<Vec<_>>(),
10119                vec![
10120                    dirty_regular_buffer.item_id(),
10121                    dirty_regular_buffer_2.item_id(),
10122                ],
10123                "Should have no multi buffer left in the pane"
10124            );
10125            assert!(dirty_regular_buffer.read(cx).is_dirty);
10126            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10127        });
10128    }
10129
10130    #[gpui::test]
10131    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10132        init_test(cx);
10133        let fs = FakeFs::new(cx.executor());
10134        let project = Project::test(fs, [], cx).await;
10135        let (workspace, cx) =
10136            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10137
10138        // Add a new panel to the right dock, opening the dock and setting the
10139        // focus to the new panel.
10140        let panel = workspace.update_in(cx, |workspace, window, cx| {
10141            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10142            workspace.add_panel(panel.clone(), window, cx);
10143
10144            workspace
10145                .right_dock()
10146                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10147
10148            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10149
10150            panel
10151        });
10152
10153        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10154        // panel to the next valid position which, in this case, is the left
10155        // dock.
10156        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10157        workspace.update(cx, |workspace, cx| {
10158            assert!(workspace.left_dock().read(cx).is_open());
10159            assert_eq!(panel.read(cx).position, DockPosition::Left);
10160        });
10161
10162        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10163        // panel to the next valid position which, in this case, is the bottom
10164        // dock.
10165        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10166        workspace.update(cx, |workspace, cx| {
10167            assert!(workspace.bottom_dock().read(cx).is_open());
10168            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10169        });
10170
10171        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10172        // around moving the panel to its initial position, the right dock.
10173        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10174        workspace.update(cx, |workspace, cx| {
10175            assert!(workspace.right_dock().read(cx).is_open());
10176            assert_eq!(panel.read(cx).position, DockPosition::Right);
10177        });
10178
10179        // Remove focus from the panel, ensuring that, if the panel is not
10180        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10181        // the panel's position, so the panel is still in the right dock.
10182        workspace.update_in(cx, |workspace, window, cx| {
10183            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10184        });
10185
10186        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10187        workspace.update(cx, |workspace, cx| {
10188            assert!(workspace.right_dock().read(cx).is_open());
10189            assert_eq!(panel.read(cx).position, DockPosition::Right);
10190        });
10191    }
10192
10193    #[gpui::test]
10194    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10195        init_test(cx);
10196
10197        let fs = FakeFs::new(cx.executor());
10198        let project = Project::test(fs, [], cx).await;
10199        let (workspace, cx) =
10200            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10201
10202        let item_1 = cx.new(|cx| {
10203            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10204        });
10205        workspace.update_in(cx, |workspace, window, cx| {
10206            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10207            workspace.move_item_to_pane_in_direction(
10208                &MoveItemToPaneInDirection {
10209                    direction: SplitDirection::Right,
10210                    focus: true,
10211                    clone: false,
10212                },
10213                window,
10214                cx,
10215            );
10216            workspace.move_item_to_pane_at_index(
10217                &MoveItemToPane {
10218                    destination: 3,
10219                    focus: true,
10220                    clone: false,
10221                },
10222                window,
10223                cx,
10224            );
10225
10226            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10227            assert_eq!(
10228                pane_items_paths(&workspace.active_pane, cx),
10229                vec!["first.txt".to_string()],
10230                "Single item was not moved anywhere"
10231            );
10232        });
10233
10234        let item_2 = cx.new(|cx| {
10235            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10236        });
10237        workspace.update_in(cx, |workspace, window, cx| {
10238            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10239            assert_eq!(
10240                pane_items_paths(&workspace.panes[0], cx),
10241                vec!["first.txt".to_string(), "second.txt".to_string()],
10242            );
10243            workspace.move_item_to_pane_in_direction(
10244                &MoveItemToPaneInDirection {
10245                    direction: SplitDirection::Right,
10246                    focus: true,
10247                    clone: false,
10248                },
10249                window,
10250                cx,
10251            );
10252
10253            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10254            assert_eq!(
10255                pane_items_paths(&workspace.panes[0], cx),
10256                vec!["first.txt".to_string()],
10257                "After moving, one item should be left in the original pane"
10258            );
10259            assert_eq!(
10260                pane_items_paths(&workspace.panes[1], cx),
10261                vec!["second.txt".to_string()],
10262                "New item should have been moved to the new pane"
10263            );
10264        });
10265
10266        let item_3 = cx.new(|cx| {
10267            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10268        });
10269        workspace.update_in(cx, |workspace, window, cx| {
10270            let original_pane = workspace.panes[0].clone();
10271            workspace.set_active_pane(&original_pane, window, cx);
10272            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10273            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10274            assert_eq!(
10275                pane_items_paths(&workspace.active_pane, cx),
10276                vec!["first.txt".to_string(), "third.txt".to_string()],
10277                "New pane should be ready to move one item out"
10278            );
10279
10280            workspace.move_item_to_pane_at_index(
10281                &MoveItemToPane {
10282                    destination: 3,
10283                    focus: true,
10284                    clone: false,
10285                },
10286                window,
10287                cx,
10288            );
10289            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10290            assert_eq!(
10291                pane_items_paths(&workspace.active_pane, cx),
10292                vec!["first.txt".to_string()],
10293                "After moving, one item should be left in the original pane"
10294            );
10295            assert_eq!(
10296                pane_items_paths(&workspace.panes[1], cx),
10297                vec!["second.txt".to_string()],
10298                "Previously created pane should be unchanged"
10299            );
10300            assert_eq!(
10301                pane_items_paths(&workspace.panes[2], cx),
10302                vec!["third.txt".to_string()],
10303                "New item should have been moved to the new pane"
10304            );
10305        });
10306    }
10307
10308    #[gpui::test]
10309    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10310        init_test(cx);
10311
10312        let fs = FakeFs::new(cx.executor());
10313        let project = Project::test(fs, [], cx).await;
10314        let (workspace, cx) =
10315            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10316
10317        let item_1 = cx.new(|cx| {
10318            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10319        });
10320        workspace.update_in(cx, |workspace, window, cx| {
10321            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10322            workspace.move_item_to_pane_in_direction(
10323                &MoveItemToPaneInDirection {
10324                    direction: SplitDirection::Right,
10325                    focus: true,
10326                    clone: true,
10327                },
10328                window,
10329                cx,
10330            );
10331            workspace.move_item_to_pane_at_index(
10332                &MoveItemToPane {
10333                    destination: 3,
10334                    focus: true,
10335                    clone: true,
10336                },
10337                window,
10338                cx,
10339            );
10340
10341            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10342            for pane in workspace.panes() {
10343                assert_eq!(
10344                    pane_items_paths(pane, cx),
10345                    vec!["first.txt".to_string()],
10346                    "Single item exists in all panes"
10347                );
10348            }
10349        });
10350
10351        // verify that the active pane has been updated after waiting for the
10352        // pane focus event to fire and resolve
10353        workspace.read_with(cx, |workspace, _app| {
10354            assert_eq!(
10355                workspace.active_pane(),
10356                &workspace.panes[2],
10357                "The third pane should be the active one: {:?}",
10358                workspace.panes
10359            );
10360        })
10361    }
10362
10363    mod register_project_item_tests {
10364
10365        use super::*;
10366
10367        // View
10368        struct TestPngItemView {
10369            focus_handle: FocusHandle,
10370        }
10371        // Model
10372        struct TestPngItem {}
10373
10374        impl project::ProjectItem for TestPngItem {
10375            fn try_open(
10376                _project: &Entity<Project>,
10377                path: &ProjectPath,
10378                cx: &mut App,
10379            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10380                if path.path.extension().unwrap() == "png" {
10381                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10382                } else {
10383                    None
10384                }
10385            }
10386
10387            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10388                None
10389            }
10390
10391            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10392                None
10393            }
10394
10395            fn is_dirty(&self) -> bool {
10396                false
10397            }
10398        }
10399
10400        impl Item for TestPngItemView {
10401            type Event = ();
10402            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10403                "".into()
10404            }
10405        }
10406        impl EventEmitter<()> for TestPngItemView {}
10407        impl Focusable for TestPngItemView {
10408            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10409                self.focus_handle.clone()
10410            }
10411        }
10412
10413        impl Render for TestPngItemView {
10414            fn render(
10415                &mut self,
10416                _window: &mut Window,
10417                _cx: &mut Context<Self>,
10418            ) -> impl IntoElement {
10419                Empty
10420            }
10421        }
10422
10423        impl ProjectItem for TestPngItemView {
10424            type Item = TestPngItem;
10425
10426            fn for_project_item(
10427                _project: Entity<Project>,
10428                _pane: Option<&Pane>,
10429                _item: Entity<Self::Item>,
10430                _: &mut Window,
10431                cx: &mut Context<Self>,
10432            ) -> Self
10433            where
10434                Self: Sized,
10435            {
10436                Self {
10437                    focus_handle: cx.focus_handle(),
10438                }
10439            }
10440        }
10441
10442        // View
10443        struct TestIpynbItemView {
10444            focus_handle: FocusHandle,
10445        }
10446        // Model
10447        struct TestIpynbItem {}
10448
10449        impl project::ProjectItem for TestIpynbItem {
10450            fn try_open(
10451                _project: &Entity<Project>,
10452                path: &ProjectPath,
10453                cx: &mut App,
10454            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10455                if path.path.extension().unwrap() == "ipynb" {
10456                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10457                } else {
10458                    None
10459                }
10460            }
10461
10462            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10463                None
10464            }
10465
10466            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10467                None
10468            }
10469
10470            fn is_dirty(&self) -> bool {
10471                false
10472            }
10473        }
10474
10475        impl Item for TestIpynbItemView {
10476            type Event = ();
10477            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10478                "".into()
10479            }
10480        }
10481        impl EventEmitter<()> for TestIpynbItemView {}
10482        impl Focusable for TestIpynbItemView {
10483            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10484                self.focus_handle.clone()
10485            }
10486        }
10487
10488        impl Render for TestIpynbItemView {
10489            fn render(
10490                &mut self,
10491                _window: &mut Window,
10492                _cx: &mut Context<Self>,
10493            ) -> impl IntoElement {
10494                Empty
10495            }
10496        }
10497
10498        impl ProjectItem for TestIpynbItemView {
10499            type Item = TestIpynbItem;
10500
10501            fn for_project_item(
10502                _project: Entity<Project>,
10503                _pane: Option<&Pane>,
10504                _item: Entity<Self::Item>,
10505                _: &mut Window,
10506                cx: &mut Context<Self>,
10507            ) -> Self
10508            where
10509                Self: Sized,
10510            {
10511                Self {
10512                    focus_handle: cx.focus_handle(),
10513                }
10514            }
10515        }
10516
10517        struct TestAlternatePngItemView {
10518            focus_handle: FocusHandle,
10519        }
10520
10521        impl Item for TestAlternatePngItemView {
10522            type Event = ();
10523            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10524                "".into()
10525            }
10526        }
10527
10528        impl EventEmitter<()> for TestAlternatePngItemView {}
10529        impl Focusable for TestAlternatePngItemView {
10530            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10531                self.focus_handle.clone()
10532            }
10533        }
10534
10535        impl Render for TestAlternatePngItemView {
10536            fn render(
10537                &mut self,
10538                _window: &mut Window,
10539                _cx: &mut Context<Self>,
10540            ) -> impl IntoElement {
10541                Empty
10542            }
10543        }
10544
10545        impl ProjectItem for TestAlternatePngItemView {
10546            type Item = TestPngItem;
10547
10548            fn for_project_item(
10549                _project: Entity<Project>,
10550                _pane: Option<&Pane>,
10551                _item: Entity<Self::Item>,
10552                _: &mut Window,
10553                cx: &mut Context<Self>,
10554            ) -> Self
10555            where
10556                Self: Sized,
10557            {
10558                Self {
10559                    focus_handle: cx.focus_handle(),
10560                }
10561            }
10562        }
10563
10564        #[gpui::test]
10565        async fn test_register_project_item(cx: &mut TestAppContext) {
10566            init_test(cx);
10567
10568            cx.update(|cx| {
10569                register_project_item::<TestPngItemView>(cx);
10570                register_project_item::<TestIpynbItemView>(cx);
10571            });
10572
10573            let fs = FakeFs::new(cx.executor());
10574            fs.insert_tree(
10575                "/root1",
10576                json!({
10577                    "one.png": "BINARYDATAHERE",
10578                    "two.ipynb": "{ totally a notebook }",
10579                    "three.txt": "editing text, sure why not?"
10580                }),
10581            )
10582            .await;
10583
10584            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10585            let (workspace, cx) =
10586                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10587
10588            let worktree_id = project.update(cx, |project, cx| {
10589                project.worktrees(cx).next().unwrap().read(cx).id()
10590            });
10591
10592            let handle = workspace
10593                .update_in(cx, |workspace, window, cx| {
10594                    let project_path = (worktree_id, "one.png");
10595                    workspace.open_path(project_path, None, true, window, cx)
10596                })
10597                .await
10598                .unwrap();
10599
10600            // Now we can check if the handle we got back errored or not
10601            assert_eq!(
10602                handle.to_any().entity_type(),
10603                TypeId::of::<TestPngItemView>()
10604            );
10605
10606            let handle = workspace
10607                .update_in(cx, |workspace, window, cx| {
10608                    let project_path = (worktree_id, "two.ipynb");
10609                    workspace.open_path(project_path, None, true, window, cx)
10610                })
10611                .await
10612                .unwrap();
10613
10614            assert_eq!(
10615                handle.to_any().entity_type(),
10616                TypeId::of::<TestIpynbItemView>()
10617            );
10618
10619            let handle = workspace
10620                .update_in(cx, |workspace, window, cx| {
10621                    let project_path = (worktree_id, "three.txt");
10622                    workspace.open_path(project_path, None, true, window, cx)
10623                })
10624                .await;
10625            assert!(handle.is_err());
10626        }
10627
10628        #[gpui::test]
10629        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10630            init_test(cx);
10631
10632            cx.update(|cx| {
10633                register_project_item::<TestPngItemView>(cx);
10634                register_project_item::<TestAlternatePngItemView>(cx);
10635            });
10636
10637            let fs = FakeFs::new(cx.executor());
10638            fs.insert_tree(
10639                "/root1",
10640                json!({
10641                    "one.png": "BINARYDATAHERE",
10642                    "two.ipynb": "{ totally a notebook }",
10643                    "three.txt": "editing text, sure why not?"
10644                }),
10645            )
10646            .await;
10647            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10648            let (workspace, cx) =
10649                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10650            let worktree_id = project.update(cx, |project, cx| {
10651                project.worktrees(cx).next().unwrap().read(cx).id()
10652            });
10653
10654            let handle = workspace
10655                .update_in(cx, |workspace, window, cx| {
10656                    let project_path = (worktree_id, "one.png");
10657                    workspace.open_path(project_path, None, true, window, cx)
10658                })
10659                .await
10660                .unwrap();
10661
10662            // This _must_ be the second item registered
10663            assert_eq!(
10664                handle.to_any().entity_type(),
10665                TypeId::of::<TestAlternatePngItemView>()
10666            );
10667
10668            let handle = workspace
10669                .update_in(cx, |workspace, window, cx| {
10670                    let project_path = (worktree_id, "three.txt");
10671                    workspace.open_path(project_path, None, true, window, cx)
10672                })
10673                .await;
10674            assert!(handle.is_err());
10675        }
10676    }
10677
10678    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10679        pane.read(cx)
10680            .items()
10681            .flat_map(|item| {
10682                item.project_paths(cx)
10683                    .into_iter()
10684                    .map(|path| path.path.to_string_lossy().to_string())
10685            })
10686            .collect()
10687    }
10688
10689    pub fn init_test(cx: &mut TestAppContext) {
10690        cx.update(|cx| {
10691            let settings_store = SettingsStore::test(cx);
10692            cx.set_global(settings_store);
10693            theme::init(theme::LoadThemes::JustBase, cx);
10694            language::init(cx);
10695            crate::init_settings(cx);
10696            Project::init_settings(cx);
10697        });
10698    }
10699
10700    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10701        let item = TestProjectItem::new(id, path, cx);
10702        item.update(cx, |item, _| {
10703            item.is_dirty = true;
10704        });
10705        item
10706    }
10707}