workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod invalid_buffer_view;
    4pub mod item;
    5mod modal_layer;
    6pub mod notifications;
    7pub mod pane;
    8pub mod pane_group;
    9mod persistence;
   10pub mod searchable;
   11pub mod shared_screen;
   12mod status_bar;
   13pub mod tasks;
   14mod theme_preview;
   15mod toast_layer;
   16mod toolbar;
   17mod workspace_settings;
   18
   19pub use crate::notifications::NotificationFrame;
   20pub use dock::Panel;
   21pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   22
   23use anyhow::{Context as _, Result, anyhow};
   24use call::{ActiveCall, call_settings::CallSettings};
   25use client::{
   26    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   27    proto::{self, ErrorCode, PanelId, PeerId},
   28};
   29use collections::{HashMap, HashSet, hash_map};
   30use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   31use futures::{
   32    Future, FutureExt, StreamExt,
   33    channel::{
   34        mpsc::{self, UnboundedReceiver, UnboundedSender},
   35        oneshot,
   36    },
   37    future::{Shared, try_join_all},
   38};
   39use gpui::{
   40    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   41    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   42    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   43    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   44    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   45    point, relative, size, transparent_black,
   46};
   47pub use history_manager::*;
   48pub use item::{
   49    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   50    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   51};
   52use itertools::Itertools;
   53use language::{
   54    Buffer, LanguageRegistry, Rope,
   55    language_settings::{AllLanguageSettings, all_language_settings},
   56};
   57pub use modal_layer::*;
   58use node_runtime::NodeRuntime;
   59use notifications::{
   60    DetachAndPromptErr, Notifications, dismiss_app_notification,
   61    simple_message_notification::MessageNotification,
   62};
   63pub use pane::*;
   64pub use pane_group::*;
   65use persistence::{
   66    DB, SerializedWindowBounds,
   67    model::{SerializedSshProject, SerializedWorkspace},
   68};
   69pub use persistence::{
   70    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   71    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   72};
   73use postage::stream::Stream;
   74use project::{
   75    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   76    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   77};
   78use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   79use schemars::JsonSchema;
   80use serde::Deserialize;
   81use session::AppSession;
   82use settings::{Settings, update_settings_file};
   83use shared_screen::SharedScreen;
   84use sqlez::{
   85    bindable::{Bind, Column, StaticColumnCount},
   86    statement::Statement,
   87};
   88use status_bar::StatusBar;
   89pub use status_bar::StatusItemView;
   90use std::{
   91    any::TypeId,
   92    borrow::Cow,
   93    cell::RefCell,
   94    cmp,
   95    collections::{VecDeque, hash_map::DefaultHasher},
   96    env,
   97    hash::{Hash, Hasher},
   98    path::{Path, PathBuf},
   99    process::ExitStatus,
  100    rc::Rc,
  101    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
  102    time::Duration,
  103};
  104use task::{DebugScenario, SpawnInTerminal, TaskContext};
  105use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  106pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  107pub use ui;
  108use ui::{Window, prelude::*};
  109use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  110use uuid::Uuid;
  111pub use workspace_settings::{
  112    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  113};
  114use zed_actions::{Spawn, feedback::FileBugReport};
  115
  116use crate::notifications::NotificationId;
  117use crate::persistence::{
  118    SerializedAxis,
  119    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  120};
  121
  122pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  123
  124static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  125    env::var("ZED_WINDOW_SIZE")
  126        .ok()
  127        .as_deref()
  128        .and_then(parse_pixel_size_env_var)
  129});
  130
  131static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  132    env::var("ZED_WINDOW_POSITION")
  133        .ok()
  134        .as_deref()
  135        .and_then(parse_pixel_position_env_var)
  136});
  137
  138pub trait TerminalProvider {
  139    fn spawn(
  140        &self,
  141        task: SpawnInTerminal,
  142        window: &mut Window,
  143        cx: &mut App,
  144    ) -> Task<Option<Result<ExitStatus>>>;
  145}
  146
  147pub trait DebuggerProvider {
  148    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  149    fn start_session(
  150        &self,
  151        definition: DebugScenario,
  152        task_context: TaskContext,
  153        active_buffer: Option<Entity<Buffer>>,
  154        worktree_id: Option<WorktreeId>,
  155        window: &mut Window,
  156        cx: &mut App,
  157    );
  158
  159    fn spawn_task_or_modal(
  160        &self,
  161        workspace: &mut Workspace,
  162        action: &Spawn,
  163        window: &mut Window,
  164        cx: &mut Context<Workspace>,
  165    );
  166
  167    fn task_scheduled(&self, cx: &mut App);
  168    fn debug_scenario_scheduled(&self, cx: &mut App);
  169    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  170
  171    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  172}
  173
  174actions!(
  175    workspace,
  176    [
  177        /// Activates the next pane in the workspace.
  178        ActivateNextPane,
  179        /// Activates the previous pane in the workspace.
  180        ActivatePreviousPane,
  181        /// Switches to the next window.
  182        ActivateNextWindow,
  183        /// Switches to the previous window.
  184        ActivatePreviousWindow,
  185        /// Adds a folder to the current project.
  186        AddFolderToProject,
  187        /// Clears all notifications.
  188        ClearAllNotifications,
  189        /// Closes the active dock.
  190        CloseActiveDock,
  191        /// Closes all docks.
  192        CloseAllDocks,
  193        /// Closes the current window.
  194        CloseWindow,
  195        /// Opens the feedback dialog.
  196        Feedback,
  197        /// Follows the next collaborator in the session.
  198        FollowNextCollaborator,
  199        /// Moves the focused panel to the next position.
  200        MoveFocusedPanelToNextPosition,
  201        /// Opens a new terminal in the center.
  202        NewCenterTerminal,
  203        /// Creates a new file.
  204        NewFile,
  205        /// Creates a new file in a vertical split.
  206        NewFileSplitVertical,
  207        /// Creates a new file in a horizontal split.
  208        NewFileSplitHorizontal,
  209        /// Opens a new search.
  210        NewSearch,
  211        /// Opens a new terminal.
  212        NewTerminal,
  213        /// Opens a new window.
  214        NewWindow,
  215        /// Opens a file or directory.
  216        Open,
  217        /// Opens multiple files.
  218        OpenFiles,
  219        /// Opens the current location in terminal.
  220        OpenInTerminal,
  221        /// Opens the component preview.
  222        OpenComponentPreview,
  223        /// Reloads the active item.
  224        ReloadActiveItem,
  225        /// Resets the active dock to its default size.
  226        ResetActiveDockSize,
  227        /// Resets all open docks to their default sizes.
  228        ResetOpenDocksSize,
  229        /// Reloads the application
  230        Reload,
  231        /// Saves the current file with a new name.
  232        SaveAs,
  233        /// Saves without formatting.
  234        SaveWithoutFormat,
  235        /// Shuts down all debug adapters.
  236        ShutdownDebugAdapters,
  237        /// Suppresses the current notification.
  238        SuppressNotification,
  239        /// Toggles the bottom dock.
  240        ToggleBottomDock,
  241        /// Toggles centered layout mode.
  242        ToggleCenteredLayout,
  243        /// Toggles edit prediction feature globally for all files.
  244        ToggleEditPrediction,
  245        /// Toggles the left dock.
  246        ToggleLeftDock,
  247        /// Toggles the right dock.
  248        ToggleRightDock,
  249        /// Toggles zoom on the active pane.
  250        ToggleZoom,
  251        /// Stops following a collaborator.
  252        Unfollow,
  253        /// Restores the banner.
  254        RestoreBanner,
  255        /// Toggles expansion of the selected item.
  256        ToggleExpandItem,
  257    ]
  258);
  259
  260/// Activates a specific pane by its index.
  261#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  262#[action(namespace = workspace)]
  263pub struct ActivatePane(pub usize);
  264
  265/// Moves an item to a specific pane by index.
  266#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  267#[action(namespace = workspace)]
  268#[serde(deny_unknown_fields)]
  269pub struct MoveItemToPane {
  270    #[serde(default = "default_1")]
  271    pub destination: usize,
  272    #[serde(default = "default_true")]
  273    pub focus: bool,
  274    #[serde(default)]
  275    pub clone: bool,
  276}
  277
  278fn default_1() -> usize {
  279    1
  280}
  281
  282/// Moves an item to a pane in the specified direction.
  283#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  284#[action(namespace = workspace)]
  285#[serde(deny_unknown_fields)]
  286pub struct MoveItemToPaneInDirection {
  287    #[serde(default = "default_right")]
  288    pub direction: SplitDirection,
  289    #[serde(default = "default_true")]
  290    pub focus: bool,
  291    #[serde(default)]
  292    pub clone: bool,
  293}
  294
  295fn default_right() -> SplitDirection {
  296    SplitDirection::Right
  297}
  298
  299/// Saves all open files in the workspace.
  300#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  301#[action(namespace = workspace)]
  302#[serde(deny_unknown_fields)]
  303pub struct SaveAll {
  304    #[serde(default)]
  305    pub save_intent: Option<SaveIntent>,
  306}
  307
  308/// Saves the current file with the specified options.
  309#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  310#[action(namespace = workspace)]
  311#[serde(deny_unknown_fields)]
  312pub struct Save {
  313    #[serde(default)]
  314    pub save_intent: Option<SaveIntent>,
  315}
  316
  317/// Closes all items and panes in the workspace.
  318#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  319#[action(namespace = workspace)]
  320#[serde(deny_unknown_fields)]
  321pub struct CloseAllItemsAndPanes {
  322    #[serde(default)]
  323    pub save_intent: Option<SaveIntent>,
  324}
  325
  326/// Closes all inactive tabs and panes in the workspace.
  327#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  328#[action(namespace = workspace)]
  329#[serde(deny_unknown_fields)]
  330pub struct CloseInactiveTabsAndPanes {
  331    #[serde(default)]
  332    pub save_intent: Option<SaveIntent>,
  333}
  334
  335/// Sends a sequence of keystrokes to the active element.
  336#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  337#[action(namespace = workspace)]
  338pub struct SendKeystrokes(pub String);
  339
  340actions!(
  341    project_symbols,
  342    [
  343        /// Toggles the project symbols search.
  344        #[action(name = "Toggle")]
  345        ToggleProjectSymbols
  346    ]
  347);
  348
  349/// Toggles the file finder interface.
  350#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  351#[action(namespace = file_finder, name = "Toggle")]
  352#[serde(deny_unknown_fields)]
  353pub struct ToggleFileFinder {
  354    #[serde(default)]
  355    pub separate_history: bool,
  356}
  357
  358/// Increases size of a currently focused dock by a given amount of pixels.
  359#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  360#[action(namespace = workspace)]
  361#[serde(deny_unknown_fields)]
  362pub struct IncreaseActiveDockSize {
  363    /// For 0px parameter, uses UI font size value.
  364    #[serde(default)]
  365    pub px: u32,
  366}
  367
  368/// Decreases size of a currently focused dock by a given amount of pixels.
  369#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  370#[action(namespace = workspace)]
  371#[serde(deny_unknown_fields)]
  372pub struct DecreaseActiveDockSize {
  373    /// For 0px parameter, uses UI font size value.
  374    #[serde(default)]
  375    pub px: u32,
  376}
  377
  378/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  379#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  380#[action(namespace = workspace)]
  381#[serde(deny_unknown_fields)]
  382pub struct IncreaseOpenDocksSize {
  383    /// For 0px parameter, uses UI font size value.
  384    #[serde(default)]
  385    pub px: u32,
  386}
  387
  388/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  389#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  390#[action(namespace = workspace)]
  391#[serde(deny_unknown_fields)]
  392pub struct DecreaseOpenDocksSize {
  393    /// For 0px parameter, uses UI font size value.
  394    #[serde(default)]
  395    pub px: u32,
  396}
  397
  398actions!(
  399    workspace,
  400    [
  401        /// Activates the pane to the left.
  402        ActivatePaneLeft,
  403        /// Activates the pane to the right.
  404        ActivatePaneRight,
  405        /// Activates the pane above.
  406        ActivatePaneUp,
  407        /// Activates the pane below.
  408        ActivatePaneDown,
  409        /// Swaps the current pane with the one to the left.
  410        SwapPaneLeft,
  411        /// Swaps the current pane with the one to the right.
  412        SwapPaneRight,
  413        /// Swaps the current pane with the one above.
  414        SwapPaneUp,
  415        /// Swaps the current pane with the one below.
  416        SwapPaneDown,
  417    ]
  418);
  419
  420#[derive(PartialEq, Eq, Debug)]
  421pub enum CloseIntent {
  422    /// Quit the program entirely.
  423    Quit,
  424    /// Close a window.
  425    CloseWindow,
  426    /// Replace the workspace in an existing window.
  427    ReplaceWindow,
  428}
  429
  430#[derive(Clone)]
  431pub struct Toast {
  432    id: NotificationId,
  433    msg: Cow<'static, str>,
  434    autohide: bool,
  435    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  436}
  437
  438impl Toast {
  439    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  440        Toast {
  441            id,
  442            msg: msg.into(),
  443            on_click: None,
  444            autohide: false,
  445        }
  446    }
  447
  448    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  449    where
  450        M: Into<Cow<'static, str>>,
  451        F: Fn(&mut Window, &mut App) + 'static,
  452    {
  453        self.on_click = Some((message.into(), Arc::new(on_click)));
  454        self
  455    }
  456
  457    pub fn autohide(mut self) -> Self {
  458        self.autohide = true;
  459        self
  460    }
  461}
  462
  463impl PartialEq for Toast {
  464    fn eq(&self, other: &Self) -> bool {
  465        self.id == other.id
  466            && self.msg == other.msg
  467            && self.on_click.is_some() == other.on_click.is_some()
  468    }
  469}
  470
  471/// Opens a new terminal with the specified working directory.
  472#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  473#[action(namespace = workspace)]
  474#[serde(deny_unknown_fields)]
  475pub struct OpenTerminal {
  476    pub working_directory: PathBuf,
  477}
  478
  479#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  480pub struct WorkspaceId(i64);
  481
  482impl StaticColumnCount for WorkspaceId {}
  483impl Bind for WorkspaceId {
  484    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  485        self.0.bind(statement, start_index)
  486    }
  487}
  488impl Column for WorkspaceId {
  489    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  490        i64::column(statement, start_index)
  491            .map(|(i, next_index)| (Self(i), next_index))
  492            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  493    }
  494}
  495impl From<WorkspaceId> for i64 {
  496    fn from(val: WorkspaceId) -> Self {
  497        val.0
  498    }
  499}
  500
  501pub fn init_settings(cx: &mut App) {
  502    WorkspaceSettings::register(cx);
  503    ItemSettings::register(cx);
  504    PreviewTabsSettings::register(cx);
  505    TabBarSettings::register(cx);
  506}
  507
  508fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  509    let paths = cx.prompt_for_paths(options);
  510    cx.spawn(
  511        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  512            Ok(Some(paths)) => {
  513                cx.update(|cx| {
  514                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  515                })
  516                .ok();
  517            }
  518            Ok(None) => {}
  519            Err(err) => {
  520                util::log_err(&err);
  521                cx.update(|cx| {
  522                    if let Some(workspace_window) = cx
  523                        .active_window()
  524                        .and_then(|window| window.downcast::<Workspace>())
  525                    {
  526                        workspace_window
  527                            .update(cx, |workspace, _, cx| {
  528                                workspace.show_portal_error(err.to_string(), cx);
  529                            })
  530                            .ok();
  531                    }
  532                })
  533                .ok();
  534            }
  535        },
  536    )
  537    .detach();
  538}
  539
  540pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  541    init_settings(cx);
  542    component::init();
  543    theme_preview::init(cx);
  544    toast_layer::init(cx);
  545    history_manager::init(cx);
  546
  547    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  548    cx.on_action(|_: &Reload, cx| reload(cx));
  549
  550    cx.on_action({
  551        let app_state = Arc::downgrade(&app_state);
  552        move |_: &Open, cx: &mut App| {
  553            if let Some(app_state) = app_state.upgrade() {
  554                prompt_and_open_paths(
  555                    app_state,
  556                    PathPromptOptions {
  557                        files: true,
  558                        directories: true,
  559                        multiple: true,
  560                        prompt: None,
  561                    },
  562                    cx,
  563                );
  564            }
  565        }
  566    });
  567    cx.on_action({
  568        let app_state = Arc::downgrade(&app_state);
  569        move |_: &OpenFiles, cx: &mut App| {
  570            let directories = cx.can_select_mixed_files_and_dirs();
  571            if let Some(app_state) = app_state.upgrade() {
  572                prompt_and_open_paths(
  573                    app_state,
  574                    PathPromptOptions {
  575                        files: true,
  576                        directories,
  577                        multiple: true,
  578                        prompt: None,
  579                    },
  580                    cx,
  581                );
  582            }
  583        }
  584    });
  585}
  586
  587type BuildProjectItemFn =
  588    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  589
  590type BuildProjectItemForPathFn =
  591    fn(
  592        &Entity<Project>,
  593        &ProjectPath,
  594        &mut Window,
  595        &mut App,
  596    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  597
  598#[derive(Clone, Default)]
  599struct ProjectItemRegistry {
  600    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  601    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  602}
  603
  604impl ProjectItemRegistry {
  605    fn register<T: ProjectItem>(&mut self) {
  606        self.build_project_item_fns_by_type.insert(
  607            TypeId::of::<T::Item>(),
  608            |item, project, pane, window, cx| {
  609                let item = item.downcast().unwrap();
  610                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  611                    as Box<dyn ItemHandle>
  612            },
  613        );
  614        self.build_project_item_for_path_fns
  615            .push(|project, project_path, window, cx| {
  616                let project_path = project_path.clone();
  617                let abs_path = project.read(cx).absolute_path(&project_path, cx);
  618                let is_local = project.read(cx).is_local();
  619                let project_item =
  620                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  621                let project = project.clone();
  622                Some(window.spawn(cx, async move |cx| match project_item.await {
  623                    Ok(project_item) => {
  624                        let project_item = project_item;
  625                        let project_entry_id: Option<ProjectEntryId> =
  626                            project_item.read_with(cx, project::ProjectItem::entry_id)?;
  627                        let build_workspace_item = Box::new(
  628                            |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  629                                Box::new(cx.new(|cx| {
  630                                    T::for_project_item(
  631                                        project,
  632                                        Some(pane),
  633                                        project_item,
  634                                        window,
  635                                        cx,
  636                                    )
  637                                })) as Box<dyn ItemHandle>
  638                            },
  639                        ) as Box<_>;
  640                        Ok((project_entry_id, build_workspace_item))
  641                    }
  642                    Err(e) => match abs_path {
  643                        Some(abs_path) => match cx.update(|window, cx| {
  644                            T::for_broken_project_item(abs_path, is_local, &e, window, cx)
  645                        })? {
  646                            Some(broken_project_item_view) => {
  647                                let build_workspace_item = Box::new(
  648                                    move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  649                                        cx.new(|_| broken_project_item_view).boxed_clone()
  650                                    },
  651                                )
  652                                    as Box<_>;
  653                                Ok((None, build_workspace_item))
  654                            }
  655                            None => Err(e)?,
  656                        },
  657                        None => Err(e)?,
  658                    },
  659                }))
  660            });
  661    }
  662
  663    fn open_path(
  664        &self,
  665        project: &Entity<Project>,
  666        path: &ProjectPath,
  667        window: &mut Window,
  668        cx: &mut App,
  669    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  670        let Some(open_project_item) = self
  671            .build_project_item_for_path_fns
  672            .iter()
  673            .rev()
  674            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  675        else {
  676            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  677        };
  678        open_project_item
  679    }
  680
  681    fn build_item<T: project::ProjectItem>(
  682        &self,
  683        item: Entity<T>,
  684        project: Entity<Project>,
  685        pane: Option<&Pane>,
  686        window: &mut Window,
  687        cx: &mut App,
  688    ) -> Option<Box<dyn ItemHandle>> {
  689        let build = self
  690            .build_project_item_fns_by_type
  691            .get(&TypeId::of::<T>())?;
  692        Some(build(item.into_any(), project, pane, window, cx))
  693    }
  694}
  695
  696type WorkspaceItemBuilder =
  697    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  698
  699impl Global for ProjectItemRegistry {}
  700
  701/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  702/// items will get a chance to open the file, starting from the project item that
  703/// was added last.
  704pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  705    cx.default_global::<ProjectItemRegistry>().register::<I>();
  706}
  707
  708#[derive(Default)]
  709pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  710
  711struct FollowableViewDescriptor {
  712    from_state_proto: fn(
  713        Entity<Workspace>,
  714        ViewId,
  715        &mut Option<proto::view::Variant>,
  716        &mut Window,
  717        &mut App,
  718    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  719    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  720}
  721
  722impl Global for FollowableViewRegistry {}
  723
  724impl FollowableViewRegistry {
  725    pub fn register<I: FollowableItem>(cx: &mut App) {
  726        cx.default_global::<Self>().0.insert(
  727            TypeId::of::<I>(),
  728            FollowableViewDescriptor {
  729                from_state_proto: |workspace, id, state, window, cx| {
  730                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  731                        cx.foreground_executor()
  732                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  733                    })
  734                },
  735                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  736            },
  737        );
  738    }
  739
  740    pub fn from_state_proto(
  741        workspace: Entity<Workspace>,
  742        view_id: ViewId,
  743        mut state: Option<proto::view::Variant>,
  744        window: &mut Window,
  745        cx: &mut App,
  746    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  747        cx.update_default_global(|this: &mut Self, cx| {
  748            this.0.values().find_map(|descriptor| {
  749                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  750            })
  751        })
  752    }
  753
  754    pub fn to_followable_view(
  755        view: impl Into<AnyView>,
  756        cx: &App,
  757    ) -> Option<Box<dyn FollowableItemHandle>> {
  758        let this = cx.try_global::<Self>()?;
  759        let view = view.into();
  760        let descriptor = this.0.get(&view.entity_type())?;
  761        Some((descriptor.to_followable_view)(&view))
  762    }
  763}
  764
  765#[derive(Copy, Clone)]
  766struct SerializableItemDescriptor {
  767    deserialize: fn(
  768        Entity<Project>,
  769        WeakEntity<Workspace>,
  770        WorkspaceId,
  771        ItemId,
  772        &mut Window,
  773        &mut Context<Pane>,
  774    ) -> Task<Result<Box<dyn ItemHandle>>>,
  775    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  776    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  777}
  778
  779#[derive(Default)]
  780struct SerializableItemRegistry {
  781    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  782    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  783}
  784
  785impl Global for SerializableItemRegistry {}
  786
  787impl SerializableItemRegistry {
  788    fn deserialize(
  789        item_kind: &str,
  790        project: Entity<Project>,
  791        workspace: WeakEntity<Workspace>,
  792        workspace_id: WorkspaceId,
  793        item_item: ItemId,
  794        window: &mut Window,
  795        cx: &mut Context<Pane>,
  796    ) -> Task<Result<Box<dyn ItemHandle>>> {
  797        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  798            return Task::ready(Err(anyhow!(
  799                "cannot deserialize {}, descriptor not found",
  800                item_kind
  801            )));
  802        };
  803
  804        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  805    }
  806
  807    fn cleanup(
  808        item_kind: &str,
  809        workspace_id: WorkspaceId,
  810        loaded_items: Vec<ItemId>,
  811        window: &mut Window,
  812        cx: &mut App,
  813    ) -> Task<Result<()>> {
  814        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  815            return Task::ready(Err(anyhow!(
  816                "cannot cleanup {}, descriptor not found",
  817                item_kind
  818            )));
  819        };
  820
  821        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  822    }
  823
  824    fn view_to_serializable_item_handle(
  825        view: AnyView,
  826        cx: &App,
  827    ) -> Option<Box<dyn SerializableItemHandle>> {
  828        let this = cx.try_global::<Self>()?;
  829        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  830        Some((descriptor.view_to_serializable_item)(view))
  831    }
  832
  833    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  834        let this = cx.try_global::<Self>()?;
  835        this.descriptors_by_kind.get(item_kind).copied()
  836    }
  837}
  838
  839pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  840    let serialized_item_kind = I::serialized_item_kind();
  841
  842    let registry = cx.default_global::<SerializableItemRegistry>();
  843    let descriptor = SerializableItemDescriptor {
  844        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  845            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  846            cx.foreground_executor()
  847                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  848        },
  849        cleanup: |workspace_id, loaded_items, window, cx| {
  850            I::cleanup(workspace_id, loaded_items, window, cx)
  851        },
  852        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  853    };
  854    registry
  855        .descriptors_by_kind
  856        .insert(Arc::from(serialized_item_kind), descriptor);
  857    registry
  858        .descriptors_by_type
  859        .insert(TypeId::of::<I>(), descriptor);
  860}
  861
  862pub struct AppState {
  863    pub languages: Arc<LanguageRegistry>,
  864    pub client: Arc<Client>,
  865    pub user_store: Entity<UserStore>,
  866    pub workspace_store: Entity<WorkspaceStore>,
  867    pub fs: Arc<dyn fs::Fs>,
  868    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  869    pub node_runtime: NodeRuntime,
  870    pub session: Entity<AppSession>,
  871}
  872
  873struct GlobalAppState(Weak<AppState>);
  874
  875impl Global for GlobalAppState {}
  876
  877pub struct WorkspaceStore {
  878    workspaces: HashSet<WindowHandle<Workspace>>,
  879    client: Arc<Client>,
  880    _subscriptions: Vec<client::Subscription>,
  881}
  882
  883#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  884pub enum CollaboratorId {
  885    PeerId(PeerId),
  886    Agent,
  887}
  888
  889impl From<PeerId> for CollaboratorId {
  890    fn from(peer_id: PeerId) -> Self {
  891        CollaboratorId::PeerId(peer_id)
  892    }
  893}
  894
  895impl From<&PeerId> for CollaboratorId {
  896    fn from(peer_id: &PeerId) -> Self {
  897        CollaboratorId::PeerId(*peer_id)
  898    }
  899}
  900
  901#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  902struct Follower {
  903    project_id: Option<u64>,
  904    peer_id: PeerId,
  905}
  906
  907impl AppState {
  908    #[track_caller]
  909    pub fn global(cx: &App) -> Weak<Self> {
  910        cx.global::<GlobalAppState>().0.clone()
  911    }
  912    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  913        cx.try_global::<GlobalAppState>()
  914            .map(|state| state.0.clone())
  915    }
  916    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  917        cx.set_global(GlobalAppState(state));
  918    }
  919
  920    #[cfg(any(test, feature = "test-support"))]
  921    pub fn test(cx: &mut App) -> Arc<Self> {
  922        use node_runtime::NodeRuntime;
  923        use session::Session;
  924        use settings::SettingsStore;
  925
  926        if !cx.has_global::<SettingsStore>() {
  927            let settings_store = SettingsStore::test(cx);
  928            cx.set_global(settings_store);
  929        }
  930
  931        let fs = fs::FakeFs::new(cx.background_executor().clone());
  932        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  933        let clock = Arc::new(clock::FakeSystemClock::new());
  934        let http_client = http_client::FakeHttpClient::with_404_response();
  935        let client = Client::new(clock, http_client, cx);
  936        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  937        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  938        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  939
  940        theme::init(theme::LoadThemes::JustBase, cx);
  941        client::init(&client, cx);
  942        crate::init_settings(cx);
  943
  944        Arc::new(Self {
  945            client,
  946            fs,
  947            languages,
  948            user_store,
  949            workspace_store,
  950            node_runtime: NodeRuntime::unavailable(),
  951            build_window_options: |_, _| Default::default(),
  952            session,
  953        })
  954    }
  955}
  956
  957struct DelayedDebouncedEditAction {
  958    task: Option<Task<()>>,
  959    cancel_channel: Option<oneshot::Sender<()>>,
  960}
  961
  962impl DelayedDebouncedEditAction {
  963    fn new() -> DelayedDebouncedEditAction {
  964        DelayedDebouncedEditAction {
  965            task: None,
  966            cancel_channel: None,
  967        }
  968    }
  969
  970    fn fire_new<F>(
  971        &mut self,
  972        delay: Duration,
  973        window: &mut Window,
  974        cx: &mut Context<Workspace>,
  975        func: F,
  976    ) where
  977        F: 'static
  978            + Send
  979            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  980    {
  981        if let Some(channel) = self.cancel_channel.take() {
  982            _ = channel.send(());
  983        }
  984
  985        let (sender, mut receiver) = oneshot::channel::<()>();
  986        self.cancel_channel = Some(sender);
  987
  988        let previous_task = self.task.take();
  989        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  990            let mut timer = cx.background_executor().timer(delay).fuse();
  991            if let Some(previous_task) = previous_task {
  992                previous_task.await;
  993            }
  994
  995            futures::select_biased! {
  996                _ = receiver => return,
  997                    _ = timer => {}
  998            }
  999
 1000            if let Some(result) = workspace
 1001                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1002                .log_err()
 1003            {
 1004                result.await.log_err();
 1005            }
 1006        }));
 1007    }
 1008}
 1009
 1010pub enum Event {
 1011    PaneAdded(Entity<Pane>),
 1012    PaneRemoved,
 1013    ItemAdded {
 1014        item: Box<dyn ItemHandle>,
 1015    },
 1016    ItemRemoved,
 1017    ActiveItemChanged,
 1018    UserSavedItem {
 1019        pane: WeakEntity<Pane>,
 1020        item: Box<dyn WeakItemHandle>,
 1021        save_intent: SaveIntent,
 1022    },
 1023    ContactRequestedJoin(u64),
 1024    WorkspaceCreated(WeakEntity<Workspace>),
 1025    OpenBundledFile {
 1026        text: Cow<'static, str>,
 1027        title: &'static str,
 1028        language: &'static str,
 1029    },
 1030    ZoomChanged,
 1031    ModalOpened,
 1032    ClearActivityIndicator,
 1033}
 1034
 1035#[derive(Debug)]
 1036pub enum OpenVisible {
 1037    All,
 1038    None,
 1039    OnlyFiles,
 1040    OnlyDirectories,
 1041}
 1042
 1043enum WorkspaceLocation {
 1044    // Valid local paths or SSH project to serialize
 1045    Location(SerializedWorkspaceLocation),
 1046    // No valid location found hence clear session id
 1047    DetachFromSession,
 1048    // No valid location found to serialize
 1049    None,
 1050}
 1051
 1052type PromptForNewPath = Box<
 1053    dyn Fn(
 1054        &mut Workspace,
 1055        DirectoryLister,
 1056        &mut Window,
 1057        &mut Context<Workspace>,
 1058    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1059>;
 1060
 1061type PromptForOpenPath = Box<
 1062    dyn Fn(
 1063        &mut Workspace,
 1064        DirectoryLister,
 1065        &mut Window,
 1066        &mut Context<Workspace>,
 1067    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1068>;
 1069
 1070#[derive(Default)]
 1071struct DispatchingKeystrokes {
 1072    dispatched: HashSet<Vec<Keystroke>>,
 1073    queue: VecDeque<Keystroke>,
 1074    task: Option<Shared<Task<()>>>,
 1075}
 1076
 1077/// Collects everything project-related for a certain window opened.
 1078/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1079///
 1080/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1081/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1082/// that can be used to register a global action to be triggered from any place in the window.
 1083pub struct Workspace {
 1084    weak_self: WeakEntity<Self>,
 1085    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1086    zoomed: Option<AnyWeakView>,
 1087    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1088    zoomed_position: Option<DockPosition>,
 1089    center: PaneGroup,
 1090    left_dock: Entity<Dock>,
 1091    bottom_dock: Entity<Dock>,
 1092    right_dock: Entity<Dock>,
 1093    panes: Vec<Entity<Pane>>,
 1094    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1095    active_pane: Entity<Pane>,
 1096    last_active_center_pane: Option<WeakEntity<Pane>>,
 1097    last_active_view_id: Option<proto::ViewId>,
 1098    status_bar: Entity<StatusBar>,
 1099    modal_layer: Entity<ModalLayer>,
 1100    toast_layer: Entity<ToastLayer>,
 1101    titlebar_item: Option<AnyView>,
 1102    notifications: Notifications,
 1103    suppressed_notifications: HashSet<NotificationId>,
 1104    project: Entity<Project>,
 1105    follower_states: HashMap<CollaboratorId, FollowerState>,
 1106    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1107    window_edited: bool,
 1108    last_window_title: Option<String>,
 1109    dirty_items: HashMap<EntityId, Subscription>,
 1110    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1111    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1112    database_id: Option<WorkspaceId>,
 1113    app_state: Arc<AppState>,
 1114    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1115    _subscriptions: Vec<Subscription>,
 1116    _apply_leader_updates: Task<Result<()>>,
 1117    _observe_current_user: Task<Result<()>>,
 1118    _schedule_serialize_workspace: Option<Task<()>>,
 1119    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1120    pane_history_timestamp: Arc<AtomicUsize>,
 1121    bounds: Bounds<Pixels>,
 1122    pub centered_layout: bool,
 1123    bounds_save_task_queued: Option<Task<()>>,
 1124    on_prompt_for_new_path: Option<PromptForNewPath>,
 1125    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1126    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1127    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1128    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1129    serialized_ssh_project: Option<SerializedSshProject>,
 1130    _items_serializer: Task<Result<()>>,
 1131    session_id: Option<String>,
 1132    scheduled_tasks: Vec<Task<()>>,
 1133}
 1134
 1135impl EventEmitter<Event> for Workspace {}
 1136
 1137#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1138pub struct ViewId {
 1139    pub creator: CollaboratorId,
 1140    pub id: u64,
 1141}
 1142
 1143pub struct FollowerState {
 1144    center_pane: Entity<Pane>,
 1145    dock_pane: Option<Entity<Pane>>,
 1146    active_view_id: Option<ViewId>,
 1147    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1148}
 1149
 1150struct FollowerView {
 1151    view: Box<dyn FollowableItemHandle>,
 1152    location: Option<proto::PanelId>,
 1153}
 1154
 1155impl Workspace {
 1156    const DEFAULT_PADDING: f32 = 0.2;
 1157    const MAX_PADDING: f32 = 0.4;
 1158
 1159    pub fn new(
 1160        workspace_id: Option<WorkspaceId>,
 1161        project: Entity<Project>,
 1162        app_state: Arc<AppState>,
 1163        window: &mut Window,
 1164        cx: &mut Context<Self>,
 1165    ) -> Self {
 1166        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1167            match event {
 1168                project::Event::RemoteIdChanged(_) => {
 1169                    this.update_window_title(window, cx);
 1170                }
 1171
 1172                project::Event::CollaboratorLeft(peer_id) => {
 1173                    this.collaborator_left(*peer_id, window, cx);
 1174                }
 1175
 1176                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1177                    this.update_window_title(window, cx);
 1178                    this.update_ssh_paths(cx);
 1179                    this.serialize_ssh_paths(window, cx);
 1180                    this.serialize_workspace(window, cx);
 1181                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1182                    this.update_history(cx);
 1183                }
 1184
 1185                project::Event::DisconnectedFromHost => {
 1186                    this.update_window_edited(window, cx);
 1187                    let leaders_to_unfollow =
 1188                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1189                    for leader_id in leaders_to_unfollow {
 1190                        this.unfollow(leader_id, window, cx);
 1191                    }
 1192                }
 1193
 1194                project::Event::DisconnectedFromSshRemote => {
 1195                    this.update_window_edited(window, cx);
 1196                }
 1197
 1198                project::Event::Closed => {
 1199                    window.remove_window();
 1200                }
 1201
 1202                project::Event::DeletedEntry(_, entry_id) => {
 1203                    for pane in this.panes.iter() {
 1204                        pane.update(cx, |pane, cx| {
 1205                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1206                        });
 1207                    }
 1208                }
 1209
 1210                project::Event::Toast {
 1211                    notification_id,
 1212                    message,
 1213                } => this.show_notification(
 1214                    NotificationId::named(notification_id.clone()),
 1215                    cx,
 1216                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1217                ),
 1218
 1219                project::Event::HideToast { notification_id } => {
 1220                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1221                }
 1222
 1223                project::Event::LanguageServerPrompt(request) => {
 1224                    struct LanguageServerPrompt;
 1225
 1226                    let mut hasher = DefaultHasher::new();
 1227                    request.lsp_name.as_str().hash(&mut hasher);
 1228                    let id = hasher.finish();
 1229
 1230                    this.show_notification(
 1231                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1232                        cx,
 1233                        |cx| {
 1234                            cx.new(|cx| {
 1235                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1236                            })
 1237                        },
 1238                    );
 1239                }
 1240
 1241                project::Event::AgentLocationChanged => {
 1242                    this.handle_agent_location_changed(window, cx)
 1243                }
 1244
 1245                _ => {}
 1246            }
 1247            cx.notify()
 1248        })
 1249        .detach();
 1250
 1251        cx.subscribe_in(
 1252            &project.read(cx).breakpoint_store(),
 1253            window,
 1254            |workspace, _, event, window, cx| match event {
 1255                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1256                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1257                    workspace.serialize_workspace(window, cx);
 1258                }
 1259                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1260            },
 1261        )
 1262        .detach();
 1263
 1264        cx.on_focus_lost(window, |this, window, cx| {
 1265            let focus_handle = this.focus_handle(cx);
 1266            window.focus(&focus_handle);
 1267        })
 1268        .detach();
 1269
 1270        let weak_handle = cx.entity().downgrade();
 1271        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1272
 1273        let center_pane = cx.new(|cx| {
 1274            let mut center_pane = Pane::new(
 1275                weak_handle.clone(),
 1276                project.clone(),
 1277                pane_history_timestamp.clone(),
 1278                None,
 1279                NewFile.boxed_clone(),
 1280                window,
 1281                cx,
 1282            );
 1283            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1284            center_pane
 1285        });
 1286        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1287            .detach();
 1288
 1289        window.focus(&center_pane.focus_handle(cx));
 1290
 1291        cx.emit(Event::PaneAdded(center_pane.clone()));
 1292
 1293        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1294        app_state.workspace_store.update(cx, |store, _| {
 1295            store.workspaces.insert(window_handle);
 1296        });
 1297
 1298        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1299        let mut connection_status = app_state.client.status();
 1300        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1301            current_user.next().await;
 1302            connection_status.next().await;
 1303            let mut stream =
 1304                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1305
 1306            while stream.recv().await.is_some() {
 1307                this.update(cx, |_, cx| cx.notify())?;
 1308            }
 1309            anyhow::Ok(())
 1310        });
 1311
 1312        // All leader updates are enqueued and then processed in a single task, so
 1313        // that each asynchronous operation can be run in order.
 1314        let (leader_updates_tx, mut leader_updates_rx) =
 1315            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1316        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1317            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1318                Self::process_leader_update(&this, leader_id, update, cx)
 1319                    .await
 1320                    .log_err();
 1321            }
 1322
 1323            Ok(())
 1324        });
 1325
 1326        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1327        let modal_layer = cx.new(|_| ModalLayer::new());
 1328        let toast_layer = cx.new(|_| ToastLayer::new());
 1329        cx.subscribe(
 1330            &modal_layer,
 1331            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1332                cx.emit(Event::ModalOpened);
 1333            },
 1334        )
 1335        .detach();
 1336
 1337        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1338        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1339        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1340        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1341        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1342        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1343        let status_bar = cx.new(|cx| {
 1344            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1345            status_bar.add_left_item(left_dock_buttons, window, cx);
 1346            status_bar.add_right_item(right_dock_buttons, window, cx);
 1347            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1348            status_bar
 1349        });
 1350
 1351        let session_id = app_state.session.read(cx).id().to_owned();
 1352
 1353        let mut active_call = None;
 1354        if let Some(call) = ActiveCall::try_global(cx) {
 1355            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1356            active_call = Some((call, subscriptions));
 1357        }
 1358
 1359        let (serializable_items_tx, serializable_items_rx) =
 1360            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1361        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1362            Self::serialize_items(&this, serializable_items_rx, cx).await
 1363        });
 1364
 1365        let subscriptions = vec![
 1366            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1367            cx.observe_window_bounds(window, move |this, window, cx| {
 1368                if this.bounds_save_task_queued.is_some() {
 1369                    return;
 1370                }
 1371                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1372                    cx.background_executor()
 1373                        .timer(Duration::from_millis(100))
 1374                        .await;
 1375                    this.update_in(cx, |this, window, cx| {
 1376                        if let Some(display) = window.display(cx)
 1377                            && let Ok(display_uuid) = display.uuid()
 1378                        {
 1379                            let window_bounds = window.inner_window_bounds();
 1380                            if let Some(database_id) = workspace_id {
 1381                                cx.background_executor()
 1382                                    .spawn(DB.set_window_open_status(
 1383                                        database_id,
 1384                                        SerializedWindowBounds(window_bounds),
 1385                                        display_uuid,
 1386                                    ))
 1387                                    .detach_and_log_err(cx);
 1388                            }
 1389                        }
 1390                        this.bounds_save_task_queued.take();
 1391                    })
 1392                    .ok();
 1393                }));
 1394                cx.notify();
 1395            }),
 1396            cx.observe_window_appearance(window, |_, window, cx| {
 1397                let window_appearance = window.appearance();
 1398
 1399                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1400
 1401                ThemeSettings::reload_current_theme(cx);
 1402                ThemeSettings::reload_current_icon_theme(cx);
 1403            }),
 1404            cx.on_release(move |this, cx| {
 1405                this.app_state.workspace_store.update(cx, move |store, _| {
 1406                    store.workspaces.remove(&window_handle.clone());
 1407                })
 1408            }),
 1409        ];
 1410
 1411        cx.defer_in(window, |this, window, cx| {
 1412            this.update_window_title(window, cx);
 1413            this.show_initial_notifications(cx);
 1414        });
 1415        Workspace {
 1416            weak_self: weak_handle.clone(),
 1417            zoomed: None,
 1418            zoomed_position: None,
 1419            previous_dock_drag_coordinates: None,
 1420            center: PaneGroup::new(center_pane.clone()),
 1421            panes: vec![center_pane.clone()],
 1422            panes_by_item: Default::default(),
 1423            active_pane: center_pane.clone(),
 1424            last_active_center_pane: Some(center_pane.downgrade()),
 1425            last_active_view_id: None,
 1426            status_bar,
 1427            modal_layer,
 1428            toast_layer,
 1429            titlebar_item: None,
 1430            notifications: Notifications::default(),
 1431            suppressed_notifications: HashSet::default(),
 1432            left_dock,
 1433            bottom_dock,
 1434            right_dock,
 1435            project: project.clone(),
 1436            follower_states: Default::default(),
 1437            last_leaders_by_pane: Default::default(),
 1438            dispatching_keystrokes: Default::default(),
 1439            window_edited: false,
 1440            last_window_title: None,
 1441            dirty_items: Default::default(),
 1442            active_call,
 1443            database_id: workspace_id,
 1444            app_state,
 1445            _observe_current_user,
 1446            _apply_leader_updates,
 1447            _schedule_serialize_workspace: None,
 1448            _schedule_serialize_ssh_paths: None,
 1449            leader_updates_tx,
 1450            _subscriptions: subscriptions,
 1451            pane_history_timestamp,
 1452            workspace_actions: Default::default(),
 1453            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1454            bounds: Default::default(),
 1455            centered_layout: false,
 1456            bounds_save_task_queued: None,
 1457            on_prompt_for_new_path: None,
 1458            on_prompt_for_open_path: None,
 1459            terminal_provider: None,
 1460            debugger_provider: None,
 1461            serializable_items_tx,
 1462            _items_serializer,
 1463            session_id: Some(session_id),
 1464            serialized_ssh_project: None,
 1465            scheduled_tasks: Vec::new(),
 1466        }
 1467    }
 1468
 1469    pub fn new_local(
 1470        abs_paths: Vec<PathBuf>,
 1471        app_state: Arc<AppState>,
 1472        requesting_window: Option<WindowHandle<Workspace>>,
 1473        env: Option<HashMap<String, String>>,
 1474        cx: &mut App,
 1475    ) -> Task<
 1476        anyhow::Result<(
 1477            WindowHandle<Workspace>,
 1478            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1479        )>,
 1480    > {
 1481        let project_handle = Project::local(
 1482            app_state.client.clone(),
 1483            app_state.node_runtime.clone(),
 1484            app_state.user_store.clone(),
 1485            app_state.languages.clone(),
 1486            app_state.fs.clone(),
 1487            env,
 1488            cx,
 1489        );
 1490
 1491        cx.spawn(async move |cx| {
 1492            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1493            for path in abs_paths.into_iter() {
 1494                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1495                    paths_to_open.push(canonical)
 1496                } else {
 1497                    paths_to_open.push(path)
 1498                }
 1499            }
 1500
 1501            let serialized_workspace =
 1502                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1503
 1504            let workspace_location = serialized_workspace
 1505                .as_ref()
 1506                .map(|ws| &ws.location)
 1507                .and_then(|loc| match loc {
 1508                    SerializedWorkspaceLocation::Local(_, order) => {
 1509                        Some((loc.sorted_paths(), order.order()))
 1510                    }
 1511                    _ => None,
 1512                });
 1513
 1514            if let Some((paths, order)) = workspace_location {
 1515                paths_to_open = paths.iter().cloned().collect();
 1516
 1517                if order.iter().enumerate().any(|(i, &j)| i != j) {
 1518                    project_handle
 1519                        .update(cx, |project, cx| {
 1520                            project.set_worktrees_reordered(true, cx);
 1521                        })
 1522                        .log_err();
 1523                }
 1524            }
 1525
 1526            // Get project paths for all of the abs_paths
 1527            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1528                Vec::with_capacity(paths_to_open.len());
 1529
 1530            for path in paths_to_open.into_iter() {
 1531                if let Some((_, project_entry)) = cx
 1532                    .update(|cx| {
 1533                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1534                    })?
 1535                    .await
 1536                    .log_err()
 1537                {
 1538                    project_paths.push((path, Some(project_entry)));
 1539                } else {
 1540                    project_paths.push((path, None));
 1541                }
 1542            }
 1543
 1544            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1545                serialized_workspace.id
 1546            } else {
 1547                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1548            };
 1549
 1550            let toolchains = DB.toolchains(workspace_id).await?;
 1551
 1552            for (toolchain, worktree_id, path) in toolchains {
 1553                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1554                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1555                    continue;
 1556                }
 1557
 1558                project_handle
 1559                    .update(cx, |this, cx| {
 1560                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1561                    })?
 1562                    .await;
 1563            }
 1564            let window = if let Some(window) = requesting_window {
 1565                let centered_layout = serialized_workspace
 1566                    .as_ref()
 1567                    .map(|w| w.centered_layout)
 1568                    .unwrap_or(false);
 1569
 1570                cx.update_window(window.into(), |_, window, cx| {
 1571                    window.replace_root(cx, |window, cx| {
 1572                        let mut workspace = Workspace::new(
 1573                            Some(workspace_id),
 1574                            project_handle.clone(),
 1575                            app_state.clone(),
 1576                            window,
 1577                            cx,
 1578                        );
 1579
 1580                        workspace.centered_layout = centered_layout;
 1581                        workspace
 1582                    });
 1583                })?;
 1584                window
 1585            } else {
 1586                let window_bounds_override = window_bounds_env_override();
 1587
 1588                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1589                    (Some(WindowBounds::Windowed(bounds)), None)
 1590                } else {
 1591                    let restorable_bounds = serialized_workspace
 1592                        .as_ref()
 1593                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1594                        .or_else(|| {
 1595                            let (display, window_bounds) = DB.last_window().log_err()?;
 1596                            Some((display?, window_bounds?))
 1597                        });
 1598
 1599                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1600                        (Some(serialized_status.0), Some(serialized_display))
 1601                    } else {
 1602                        (None, None)
 1603                    }
 1604                };
 1605
 1606                // Use the serialized workspace to construct the new window
 1607                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1608                options.window_bounds = window_bounds;
 1609                let centered_layout = serialized_workspace
 1610                    .as_ref()
 1611                    .map(|w| w.centered_layout)
 1612                    .unwrap_or(false);
 1613                cx.open_window(options, {
 1614                    let app_state = app_state.clone();
 1615                    let project_handle = project_handle.clone();
 1616                    move |window, cx| {
 1617                        cx.new(|cx| {
 1618                            let mut workspace = Workspace::new(
 1619                                Some(workspace_id),
 1620                                project_handle,
 1621                                app_state,
 1622                                window,
 1623                                cx,
 1624                            );
 1625                            workspace.centered_layout = centered_layout;
 1626                            workspace
 1627                        })
 1628                    }
 1629                })?
 1630            };
 1631
 1632            notify_if_database_failed(window, cx);
 1633            let opened_items = window
 1634                .update(cx, |_workspace, window, cx| {
 1635                    open_items(serialized_workspace, project_paths, window, cx)
 1636                })?
 1637                .await
 1638                .unwrap_or_default();
 1639
 1640            window
 1641                .update(cx, |workspace, window, cx| {
 1642                    window.activate_window();
 1643                    workspace.update_history(cx);
 1644                })
 1645                .log_err();
 1646            Ok((window, opened_items))
 1647        })
 1648    }
 1649
 1650    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1651        self.weak_self.clone()
 1652    }
 1653
 1654    pub fn left_dock(&self) -> &Entity<Dock> {
 1655        &self.left_dock
 1656    }
 1657
 1658    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1659        &self.bottom_dock
 1660    }
 1661
 1662    pub fn set_bottom_dock_layout(
 1663        &mut self,
 1664        layout: BottomDockLayout,
 1665        window: &mut Window,
 1666        cx: &mut Context<Self>,
 1667    ) {
 1668        let fs = self.project().read(cx).fs();
 1669        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1670            content.bottom_dock_layout = Some(layout);
 1671        });
 1672
 1673        cx.notify();
 1674        self.serialize_workspace(window, cx);
 1675    }
 1676
 1677    pub fn right_dock(&self) -> &Entity<Dock> {
 1678        &self.right_dock
 1679    }
 1680
 1681    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1682        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1683    }
 1684
 1685    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1686        match position {
 1687            DockPosition::Left => &self.left_dock,
 1688            DockPosition::Bottom => &self.bottom_dock,
 1689            DockPosition::Right => &self.right_dock,
 1690        }
 1691    }
 1692
 1693    pub fn is_edited(&self) -> bool {
 1694        self.window_edited
 1695    }
 1696
 1697    pub fn add_panel<T: Panel>(
 1698        &mut self,
 1699        panel: Entity<T>,
 1700        window: &mut Window,
 1701        cx: &mut Context<Self>,
 1702    ) {
 1703        let focus_handle = panel.panel_focus_handle(cx);
 1704        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1705            .detach();
 1706
 1707        let dock_position = panel.position(window, cx);
 1708        let dock = self.dock_at_position(dock_position);
 1709
 1710        dock.update(cx, |dock, cx| {
 1711            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1712        });
 1713    }
 1714
 1715    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1716        &self.status_bar
 1717    }
 1718
 1719    pub fn app_state(&self) -> &Arc<AppState> {
 1720        &self.app_state
 1721    }
 1722
 1723    pub fn user_store(&self) -> &Entity<UserStore> {
 1724        &self.app_state.user_store
 1725    }
 1726
 1727    pub fn project(&self) -> &Entity<Project> {
 1728        &self.project
 1729    }
 1730
 1731    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1732        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1733
 1734        for pane_handle in &self.panes {
 1735            let pane = pane_handle.read(cx);
 1736
 1737            for entry in pane.activation_history() {
 1738                history.insert(
 1739                    entry.entity_id,
 1740                    history
 1741                        .get(&entry.entity_id)
 1742                        .cloned()
 1743                        .unwrap_or(0)
 1744                        .max(entry.timestamp),
 1745                );
 1746            }
 1747        }
 1748
 1749        history
 1750    }
 1751
 1752    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1753        let mut recent_item: Option<Entity<T>> = None;
 1754        let mut recent_timestamp = 0;
 1755        for pane_handle in &self.panes {
 1756            let pane = pane_handle.read(cx);
 1757            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1758                pane.items().map(|item| (item.item_id(), item)).collect();
 1759            for entry in pane.activation_history() {
 1760                if entry.timestamp > recent_timestamp
 1761                    && let Some(&item) = item_map.get(&entry.entity_id)
 1762                    && let Some(typed_item) = item.act_as::<T>(cx)
 1763                {
 1764                    recent_timestamp = entry.timestamp;
 1765                    recent_item = Some(typed_item);
 1766                }
 1767            }
 1768        }
 1769        recent_item
 1770    }
 1771
 1772    pub fn recent_navigation_history_iter(
 1773        &self,
 1774        cx: &App,
 1775    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1776        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1777        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1778
 1779        for pane in &self.panes {
 1780            let pane = pane.read(cx);
 1781
 1782            pane.nav_history()
 1783                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 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                    let timestamp = entry.timestamp;
 1791                    match history.entry(project_path) {
 1792                        hash_map::Entry::Occupied(mut entry) => {
 1793                            let (_, old_timestamp) = entry.get();
 1794                            if &timestamp > old_timestamp {
 1795                                entry.insert((fs_path, timestamp));
 1796                            }
 1797                        }
 1798                        hash_map::Entry::Vacant(entry) => {
 1799                            entry.insert((fs_path, timestamp));
 1800                        }
 1801                    }
 1802                });
 1803
 1804            if let Some(item) = pane.active_item()
 1805                && let Some(project_path) = item.project_path(cx)
 1806            {
 1807                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1808
 1809                if let Some(fs_path) = &fs_path {
 1810                    abs_paths_opened
 1811                        .entry(fs_path.clone())
 1812                        .or_default()
 1813                        .insert(project_path.clone());
 1814                }
 1815
 1816                history.insert(project_path, (fs_path, std::usize::MAX));
 1817            }
 1818        }
 1819
 1820        history
 1821            .into_iter()
 1822            .sorted_by_key(|(_, (_, order))| *order)
 1823            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1824            .rev()
 1825            .filter(move |(history_path, abs_path)| {
 1826                let latest_project_path_opened = abs_path
 1827                    .as_ref()
 1828                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1829                    .and_then(|project_paths| {
 1830                        project_paths
 1831                            .iter()
 1832                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1833                    });
 1834
 1835                latest_project_path_opened.is_none_or(|path| path == history_path)
 1836            })
 1837    }
 1838
 1839    pub fn recent_navigation_history(
 1840        &self,
 1841        limit: Option<usize>,
 1842        cx: &App,
 1843    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1844        self.recent_navigation_history_iter(cx)
 1845            .take(limit.unwrap_or(usize::MAX))
 1846            .collect()
 1847    }
 1848
 1849    fn navigate_history(
 1850        &mut self,
 1851        pane: WeakEntity<Pane>,
 1852        mode: NavigationMode,
 1853        window: &mut Window,
 1854        cx: &mut Context<Workspace>,
 1855    ) -> Task<Result<()>> {
 1856        let to_load = if let Some(pane) = pane.upgrade() {
 1857            pane.update(cx, |pane, cx| {
 1858                window.focus(&pane.focus_handle(cx));
 1859                loop {
 1860                    // Retrieve the weak item handle from the history.
 1861                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1862
 1863                    // If the item is still present in this pane, then activate it.
 1864                    if let Some(index) = entry
 1865                        .item
 1866                        .upgrade()
 1867                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1868                    {
 1869                        let prev_active_item_index = pane.active_item_index();
 1870                        pane.nav_history_mut().set_mode(mode);
 1871                        pane.activate_item(index, true, true, window, cx);
 1872                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1873
 1874                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1875                        if let Some(data) = entry.data {
 1876                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1877                        }
 1878
 1879                        if navigated {
 1880                            break None;
 1881                        }
 1882                    } else {
 1883                        // If the item is no longer present in this pane, then retrieve its
 1884                        // path info in order to reopen it.
 1885                        break pane
 1886                            .nav_history()
 1887                            .path_for_item(entry.item.id())
 1888                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1889                    }
 1890                }
 1891            })
 1892        } else {
 1893            None
 1894        };
 1895
 1896        if let Some((project_path, abs_path, entry)) = to_load {
 1897            // If the item was no longer present, then load it again from its previous path, first try the local path
 1898            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1899
 1900            cx.spawn_in(window, async move  |workspace, cx| {
 1901                let open_by_project_path = open_by_project_path.await;
 1902                let mut navigated = false;
 1903                match open_by_project_path
 1904                    .with_context(|| format!("Navigating to {project_path:?}"))
 1905                {
 1906                    Ok((project_entry_id, build_item)) => {
 1907                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1908                            pane.nav_history_mut().set_mode(mode);
 1909                            pane.active_item().map(|p| p.item_id())
 1910                        })?;
 1911
 1912                        pane.update_in(cx, |pane, window, cx| {
 1913                            let item = pane.open_item(
 1914                                project_entry_id,
 1915                                project_path,
 1916                                true,
 1917                                entry.is_preview,
 1918                                true,
 1919                                None,
 1920                                window, cx,
 1921                                build_item,
 1922                            );
 1923                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1924                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1925                            if let Some(data) = entry.data {
 1926                                navigated |= item.navigate(data, window, cx);
 1927                            }
 1928                        })?;
 1929                    }
 1930                    Err(open_by_project_path_e) => {
 1931                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1932                        // and its worktree is now dropped
 1933                        if let Some(abs_path) = abs_path {
 1934                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1935                                pane.nav_history_mut().set_mode(mode);
 1936                                pane.active_item().map(|p| p.item_id())
 1937                            })?;
 1938                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1939                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1940                            })?;
 1941                            match open_by_abs_path
 1942                                .await
 1943                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1944                            {
 1945                                Ok(item) => {
 1946                                    pane.update_in(cx, |pane, window, cx| {
 1947                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1948                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1949                                        if let Some(data) = entry.data {
 1950                                            navigated |= item.navigate(data, window, cx);
 1951                                        }
 1952                                    })?;
 1953                                }
 1954                                Err(open_by_abs_path_e) => {
 1955                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1956                                }
 1957                            }
 1958                        }
 1959                    }
 1960                }
 1961
 1962                if !navigated {
 1963                    workspace
 1964                        .update_in(cx, |workspace, window, cx| {
 1965                            Self::navigate_history(workspace, pane, mode, window, cx)
 1966                        })?
 1967                        .await?;
 1968                }
 1969
 1970                Ok(())
 1971            })
 1972        } else {
 1973            Task::ready(Ok(()))
 1974        }
 1975    }
 1976
 1977    pub fn go_back(
 1978        &mut self,
 1979        pane: WeakEntity<Pane>,
 1980        window: &mut Window,
 1981        cx: &mut Context<Workspace>,
 1982    ) -> Task<Result<()>> {
 1983        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1984    }
 1985
 1986    pub fn go_forward(
 1987        &mut self,
 1988        pane: WeakEntity<Pane>,
 1989        window: &mut Window,
 1990        cx: &mut Context<Workspace>,
 1991    ) -> Task<Result<()>> {
 1992        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1993    }
 1994
 1995    pub fn reopen_closed_item(
 1996        &mut self,
 1997        window: &mut Window,
 1998        cx: &mut Context<Workspace>,
 1999    ) -> Task<Result<()>> {
 2000        self.navigate_history(
 2001            self.active_pane().downgrade(),
 2002            NavigationMode::ReopeningClosedItem,
 2003            window,
 2004            cx,
 2005        )
 2006    }
 2007
 2008    pub fn client(&self) -> &Arc<Client> {
 2009        &self.app_state.client
 2010    }
 2011
 2012    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2013        self.titlebar_item = Some(item);
 2014        cx.notify();
 2015    }
 2016
 2017    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2018        self.on_prompt_for_new_path = Some(prompt)
 2019    }
 2020
 2021    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2022        self.on_prompt_for_open_path = Some(prompt)
 2023    }
 2024
 2025    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2026        self.terminal_provider = Some(Box::new(provider));
 2027    }
 2028
 2029    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2030        self.debugger_provider = Some(Arc::new(provider));
 2031    }
 2032
 2033    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2034        self.debugger_provider.clone()
 2035    }
 2036
 2037    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
 2038        self.serialized_ssh_project.clone()
 2039    }
 2040
 2041    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
 2042        self.serialized_ssh_project = Some(serialized_ssh_project);
 2043    }
 2044
 2045    pub fn prompt_for_open_path(
 2046        &mut self,
 2047        path_prompt_options: PathPromptOptions,
 2048        lister: DirectoryLister,
 2049        window: &mut Window,
 2050        cx: &mut Context<Self>,
 2051    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2052        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2053            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2054            let rx = prompt(self, lister, window, cx);
 2055            self.on_prompt_for_open_path = Some(prompt);
 2056            rx
 2057        } else {
 2058            let (tx, rx) = oneshot::channel();
 2059            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2060
 2061            cx.spawn_in(window, async move |workspace, cx| {
 2062                let Ok(result) = abs_path.await else {
 2063                    return Ok(());
 2064                };
 2065
 2066                match result {
 2067                    Ok(result) => {
 2068                        tx.send(result).ok();
 2069                    }
 2070                    Err(err) => {
 2071                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2072                            workspace.show_portal_error(err.to_string(), cx);
 2073                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2074                            let rx = prompt(workspace, lister, window, cx);
 2075                            workspace.on_prompt_for_open_path = Some(prompt);
 2076                            rx
 2077                        })?;
 2078                        if let Ok(path) = rx.await {
 2079                            tx.send(path).ok();
 2080                        }
 2081                    }
 2082                };
 2083                anyhow::Ok(())
 2084            })
 2085            .detach();
 2086
 2087            rx
 2088        }
 2089    }
 2090
 2091    pub fn prompt_for_new_path(
 2092        &mut self,
 2093        lister: DirectoryLister,
 2094        suggested_name: Option<String>,
 2095        window: &mut Window,
 2096        cx: &mut Context<Self>,
 2097    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2098        if self.project.read(cx).is_via_collab()
 2099            || self.project.read(cx).is_via_ssh()
 2100            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2101        {
 2102            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2103            let rx = prompt(self, lister, window, cx);
 2104            self.on_prompt_for_new_path = Some(prompt);
 2105            return rx;
 2106        }
 2107
 2108        let (tx, rx) = oneshot::channel();
 2109        cx.spawn_in(window, async move |workspace, cx| {
 2110            let abs_path = workspace.update(cx, |workspace, cx| {
 2111                let relative_to = workspace
 2112                    .most_recent_active_path(cx)
 2113                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2114                    .or_else(|| {
 2115                        let project = workspace.project.read(cx);
 2116                        project.visible_worktrees(cx).find_map(|worktree| {
 2117                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2118                        })
 2119                    })
 2120                    .or_else(std::env::home_dir)
 2121                    .unwrap_or_else(|| PathBuf::from(""));
 2122                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2123            })?;
 2124            let abs_path = match abs_path.await? {
 2125                Ok(path) => path,
 2126                Err(err) => {
 2127                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2128                        workspace.show_portal_error(err.to_string(), cx);
 2129
 2130                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2131                        let rx = prompt(workspace, lister, window, cx);
 2132                        workspace.on_prompt_for_new_path = Some(prompt);
 2133                        rx
 2134                    })?;
 2135                    if let Ok(path) = rx.await {
 2136                        tx.send(path).ok();
 2137                    }
 2138                    return anyhow::Ok(());
 2139                }
 2140            };
 2141
 2142            tx.send(abs_path.map(|path| vec![path])).ok();
 2143            anyhow::Ok(())
 2144        })
 2145        .detach();
 2146
 2147        rx
 2148    }
 2149
 2150    pub fn titlebar_item(&self) -> Option<AnyView> {
 2151        self.titlebar_item.clone()
 2152    }
 2153
 2154    /// Call the given callback with a workspace whose project is local.
 2155    ///
 2156    /// If the given workspace has a local project, then it will be passed
 2157    /// to the callback. Otherwise, a new empty window will be created.
 2158    pub fn with_local_workspace<T, F>(
 2159        &mut self,
 2160        window: &mut Window,
 2161        cx: &mut Context<Self>,
 2162        callback: F,
 2163    ) -> Task<Result<T>>
 2164    where
 2165        T: 'static,
 2166        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2167    {
 2168        if self.project.read(cx).is_local() {
 2169            Task::ready(Ok(callback(self, window, cx)))
 2170        } else {
 2171            let env = self.project.read(cx).cli_environment(cx);
 2172            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2173            cx.spawn_in(window, async move |_vh, cx| {
 2174                let (workspace, _) = task.await?;
 2175                workspace.update(cx, callback)
 2176            })
 2177        }
 2178    }
 2179
 2180    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2181        self.project.read(cx).worktrees(cx)
 2182    }
 2183
 2184    pub fn visible_worktrees<'a>(
 2185        &self,
 2186        cx: &'a App,
 2187    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2188        self.project.read(cx).visible_worktrees(cx)
 2189    }
 2190
 2191    #[cfg(any(test, feature = "test-support"))]
 2192    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2193        let futures = self
 2194            .worktrees(cx)
 2195            .filter_map(|worktree| worktree.read(cx).as_local())
 2196            .map(|worktree| worktree.scan_complete())
 2197            .collect::<Vec<_>>();
 2198        async move {
 2199            for future in futures {
 2200                future.await;
 2201            }
 2202        }
 2203    }
 2204
 2205    pub fn close_global(cx: &mut App) {
 2206        cx.defer(|cx| {
 2207            cx.windows().iter().find(|window| {
 2208                window
 2209                    .update(cx, |_, window, _| {
 2210                        if window.is_window_active() {
 2211                            //This can only get called when the window's project connection has been lost
 2212                            //so we don't need to prompt the user for anything and instead just close the window
 2213                            window.remove_window();
 2214                            true
 2215                        } else {
 2216                            false
 2217                        }
 2218                    })
 2219                    .unwrap_or(false)
 2220            });
 2221        });
 2222    }
 2223
 2224    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2225        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2226        cx.spawn_in(window, async move |_, cx| {
 2227            if prepare.await? {
 2228                cx.update(|window, _cx| window.remove_window())?;
 2229            }
 2230            anyhow::Ok(())
 2231        })
 2232        .detach_and_log_err(cx)
 2233    }
 2234
 2235    pub fn move_focused_panel_to_next_position(
 2236        &mut self,
 2237        _: &MoveFocusedPanelToNextPosition,
 2238        window: &mut Window,
 2239        cx: &mut Context<Self>,
 2240    ) {
 2241        let docks = self.all_docks();
 2242        let active_dock = docks
 2243            .into_iter()
 2244            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2245
 2246        if let Some(dock) = active_dock {
 2247            dock.update(cx, |dock, cx| {
 2248                let active_panel = dock
 2249                    .active_panel()
 2250                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2251
 2252                if let Some(panel) = active_panel {
 2253                    panel.move_to_next_position(window, cx);
 2254                }
 2255            })
 2256        }
 2257    }
 2258
 2259    pub fn prepare_to_close(
 2260        &mut self,
 2261        close_intent: CloseIntent,
 2262        window: &mut Window,
 2263        cx: &mut Context<Self>,
 2264    ) -> Task<Result<bool>> {
 2265        let active_call = self.active_call().cloned();
 2266
 2267        // On Linux and Windows, closing the last window should restore the last workspace.
 2268        let save_last_workspace = cfg!(not(target_os = "macos"))
 2269            && close_intent != CloseIntent::ReplaceWindow
 2270            && cx.windows().len() == 1;
 2271
 2272        cx.spawn_in(window, async move |this, cx| {
 2273            let workspace_count = cx.update(|_window, cx| {
 2274                cx.windows()
 2275                    .iter()
 2276                    .filter(|window| window.downcast::<Workspace>().is_some())
 2277                    .count()
 2278            })?;
 2279
 2280            if let Some(active_call) = active_call
 2281                && workspace_count == 1
 2282                && active_call.read_with(cx, |call, _| call.room().is_some())?
 2283            {
 2284                if close_intent == CloseIntent::CloseWindow {
 2285                    let answer = cx.update(|window, cx| {
 2286                        window.prompt(
 2287                            PromptLevel::Warning,
 2288                            "Do you want to leave the current call?",
 2289                            None,
 2290                            &["Close window and hang up", "Cancel"],
 2291                            cx,
 2292                        )
 2293                    })?;
 2294
 2295                    if answer.await.log_err() == Some(1) {
 2296                        return anyhow::Ok(false);
 2297                    } else {
 2298                        active_call
 2299                            .update(cx, |call, cx| call.hang_up(cx))?
 2300                            .await
 2301                            .log_err();
 2302                    }
 2303                }
 2304                if close_intent == CloseIntent::ReplaceWindow {
 2305                    _ = active_call.update(cx, |this, cx| {
 2306                        let workspace = cx
 2307                            .windows()
 2308                            .iter()
 2309                            .filter_map(|window| window.downcast::<Workspace>())
 2310                            .next()
 2311                            .unwrap();
 2312                        let project = workspace.read(cx)?.project.clone();
 2313                        if project.read(cx).is_shared() {
 2314                            this.unshare_project(project, cx)?;
 2315                        }
 2316                        Ok::<_, anyhow::Error>(())
 2317                    })?;
 2318                }
 2319            }
 2320
 2321            let save_result = this
 2322                .update_in(cx, |this, window, cx| {
 2323                    this.save_all_internal(SaveIntent::Close, window, cx)
 2324                })?
 2325                .await;
 2326
 2327            // If we're not quitting, but closing, we remove the workspace from
 2328            // the current session.
 2329            if close_intent != CloseIntent::Quit
 2330                && !save_last_workspace
 2331                && save_result.as_ref().is_ok_and(|&res| res)
 2332            {
 2333                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2334                    .await;
 2335            }
 2336
 2337            save_result
 2338        })
 2339    }
 2340
 2341    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2342        self.save_all_internal(
 2343            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2344            window,
 2345            cx,
 2346        )
 2347        .detach_and_log_err(cx);
 2348    }
 2349
 2350    fn send_keystrokes(
 2351        &mut self,
 2352        action: &SendKeystrokes,
 2353        window: &mut Window,
 2354        cx: &mut Context<Self>,
 2355    ) {
 2356        let keystrokes: Vec<Keystroke> = action
 2357            .0
 2358            .split(' ')
 2359            .flat_map(|k| Keystroke::parse(k).log_err())
 2360            .collect();
 2361        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2362    }
 2363
 2364    pub fn send_keystrokes_impl(
 2365        &mut self,
 2366        keystrokes: Vec<Keystroke>,
 2367        window: &mut Window,
 2368        cx: &mut Context<Self>,
 2369    ) -> Shared<Task<()>> {
 2370        let mut state = self.dispatching_keystrokes.borrow_mut();
 2371        if !state.dispatched.insert(keystrokes.clone()) {
 2372            cx.propagate();
 2373            return state.task.clone().unwrap();
 2374        }
 2375
 2376        state.queue.extend(keystrokes);
 2377
 2378        let keystrokes = self.dispatching_keystrokes.clone();
 2379        if state.task.is_none() {
 2380            state.task = Some(
 2381                window
 2382                    .spawn(cx, async move |cx| {
 2383                        // limit to 100 keystrokes to avoid infinite recursion.
 2384                        for _ in 0..100 {
 2385                            let mut state = keystrokes.borrow_mut();
 2386                            let Some(keystroke) = state.queue.pop_front() else {
 2387                                state.dispatched.clear();
 2388                                state.task.take();
 2389                                return;
 2390                            };
 2391                            drop(state);
 2392                            cx.update(|window, cx| {
 2393                                let focused = window.focused(cx);
 2394                                window.dispatch_keystroke(keystroke.clone(), cx);
 2395                                if window.focused(cx) != focused {
 2396                                    // dispatch_keystroke may cause the focus to change.
 2397                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2398                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2399                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2400                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2401                                    // )
 2402                                    window.draw(cx).clear();
 2403                                }
 2404                            })
 2405                            .ok();
 2406                        }
 2407
 2408                        *keystrokes.borrow_mut() = Default::default();
 2409                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2410                    })
 2411                    .shared(),
 2412            );
 2413        }
 2414        state.task.clone().unwrap()
 2415    }
 2416
 2417    fn save_all_internal(
 2418        &mut self,
 2419        mut save_intent: SaveIntent,
 2420        window: &mut Window,
 2421        cx: &mut Context<Self>,
 2422    ) -> Task<Result<bool>> {
 2423        if self.project.read(cx).is_disconnected(cx) {
 2424            return Task::ready(Ok(true));
 2425        }
 2426        let dirty_items = self
 2427            .panes
 2428            .iter()
 2429            .flat_map(|pane| {
 2430                pane.read(cx).items().filter_map(|item| {
 2431                    if item.is_dirty(cx) {
 2432                        item.tab_content_text(0, cx);
 2433                        Some((pane.downgrade(), item.boxed_clone()))
 2434                    } else {
 2435                        None
 2436                    }
 2437                })
 2438            })
 2439            .collect::<Vec<_>>();
 2440
 2441        let project = self.project.clone();
 2442        cx.spawn_in(window, async move |workspace, cx| {
 2443            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2444                let (serialize_tasks, remaining_dirty_items) =
 2445                    workspace.update_in(cx, |workspace, window, cx| {
 2446                        let mut remaining_dirty_items = Vec::new();
 2447                        let mut serialize_tasks = Vec::new();
 2448                        for (pane, item) in dirty_items {
 2449                            if let Some(task) = item
 2450                                .to_serializable_item_handle(cx)
 2451                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2452                            {
 2453                                serialize_tasks.push(task);
 2454                            } else {
 2455                                remaining_dirty_items.push((pane, item));
 2456                            }
 2457                        }
 2458                        (serialize_tasks, remaining_dirty_items)
 2459                    })?;
 2460
 2461                futures::future::try_join_all(serialize_tasks).await?;
 2462
 2463                if remaining_dirty_items.len() > 1 {
 2464                    let answer = workspace.update_in(cx, |_, window, cx| {
 2465                        let detail = Pane::file_names_for_prompt(
 2466                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2467                            cx,
 2468                        );
 2469                        window.prompt(
 2470                            PromptLevel::Warning,
 2471                            "Do you want to save all changes in the following files?",
 2472                            Some(&detail),
 2473                            &["Save all", "Discard all", "Cancel"],
 2474                            cx,
 2475                        )
 2476                    })?;
 2477                    match answer.await.log_err() {
 2478                        Some(0) => save_intent = SaveIntent::SaveAll,
 2479                        Some(1) => save_intent = SaveIntent::Skip,
 2480                        Some(2) => return Ok(false),
 2481                        _ => {}
 2482                    }
 2483                }
 2484
 2485                remaining_dirty_items
 2486            } else {
 2487                dirty_items
 2488            };
 2489
 2490            for (pane, item) in dirty_items {
 2491                let (singleton, project_entry_ids) =
 2492                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2493                if (singleton || !project_entry_ids.is_empty())
 2494                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2495                {
 2496                    return Ok(false);
 2497                }
 2498            }
 2499            Ok(true)
 2500        })
 2501    }
 2502
 2503    pub fn open_workspace_for_paths(
 2504        &mut self,
 2505        replace_current_window: bool,
 2506        paths: Vec<PathBuf>,
 2507        window: &mut Window,
 2508        cx: &mut Context<Self>,
 2509    ) -> Task<Result<()>> {
 2510        let window_handle = window.window_handle().downcast::<Self>();
 2511        let is_remote = self.project.read(cx).is_via_collab();
 2512        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2513        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2514
 2515        let window_to_replace = if replace_current_window {
 2516            window_handle
 2517        } else if is_remote || has_worktree || has_dirty_items {
 2518            None
 2519        } else {
 2520            window_handle
 2521        };
 2522        let app_state = self.app_state.clone();
 2523
 2524        cx.spawn(async move |_, cx| {
 2525            cx.update(|cx| {
 2526                open_paths(
 2527                    &paths,
 2528                    app_state,
 2529                    OpenOptions {
 2530                        replace_window: window_to_replace,
 2531                        ..Default::default()
 2532                    },
 2533                    cx,
 2534                )
 2535            })?
 2536            .await?;
 2537            Ok(())
 2538        })
 2539    }
 2540
 2541    #[allow(clippy::type_complexity)]
 2542    pub fn open_paths(
 2543        &mut self,
 2544        mut abs_paths: Vec<PathBuf>,
 2545        options: OpenOptions,
 2546        pane: Option<WeakEntity<Pane>>,
 2547        window: &mut Window,
 2548        cx: &mut Context<Self>,
 2549    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2550        let fs = self.app_state.fs.clone();
 2551
 2552        // Sort the paths to ensure we add worktrees for parents before their children.
 2553        abs_paths.sort_unstable();
 2554        cx.spawn_in(window, async move |this, cx| {
 2555            let mut tasks = Vec::with_capacity(abs_paths.len());
 2556
 2557            for abs_path in &abs_paths {
 2558                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2559                    OpenVisible::All => Some(true),
 2560                    OpenVisible::None => Some(false),
 2561                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2562                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2563                        Some(None) => Some(true),
 2564                        None => None,
 2565                    },
 2566                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2567                        Some(Some(metadata)) => Some(metadata.is_dir),
 2568                        Some(None) => Some(false),
 2569                        None => None,
 2570                    },
 2571                };
 2572                let project_path = match visible {
 2573                    Some(visible) => match this
 2574                        .update(cx, |this, cx| {
 2575                            Workspace::project_path_for_path(
 2576                                this.project.clone(),
 2577                                abs_path,
 2578                                visible,
 2579                                cx,
 2580                            )
 2581                        })
 2582                        .log_err()
 2583                    {
 2584                        Some(project_path) => project_path.await.log_err(),
 2585                        None => None,
 2586                    },
 2587                    None => None,
 2588                };
 2589
 2590                let this = this.clone();
 2591                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2592                let fs = fs.clone();
 2593                let pane = pane.clone();
 2594                let task = cx.spawn(async move |cx| {
 2595                    let (worktree, project_path) = project_path?;
 2596                    if fs.is_dir(&abs_path).await {
 2597                        this.update(cx, |workspace, cx| {
 2598                            let worktree = worktree.read(cx);
 2599                            let worktree_abs_path = worktree.abs_path();
 2600                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2601                                worktree.root_entry()
 2602                            } else {
 2603                                abs_path
 2604                                    .strip_prefix(worktree_abs_path.as_ref())
 2605                                    .ok()
 2606                                    .and_then(|relative_path| {
 2607                                        worktree.entry_for_path(relative_path)
 2608                                    })
 2609                            }
 2610                            .map(|entry| entry.id);
 2611                            if let Some(entry_id) = entry_id {
 2612                                workspace.project.update(cx, |_, cx| {
 2613                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2614                                })
 2615                            }
 2616                        })
 2617                        .ok()?;
 2618                        None
 2619                    } else {
 2620                        Some(
 2621                            this.update_in(cx, |this, window, cx| {
 2622                                this.open_path(
 2623                                    project_path,
 2624                                    pane,
 2625                                    options.focus.unwrap_or(true),
 2626                                    window,
 2627                                    cx,
 2628                                )
 2629                            })
 2630                            .ok()?
 2631                            .await,
 2632                        )
 2633                    }
 2634                });
 2635                tasks.push(task);
 2636            }
 2637
 2638            futures::future::join_all(tasks).await
 2639        })
 2640    }
 2641
 2642    pub fn open_resolved_path(
 2643        &mut self,
 2644        path: ResolvedPath,
 2645        window: &mut Window,
 2646        cx: &mut Context<Self>,
 2647    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2648        match path {
 2649            ResolvedPath::ProjectPath { project_path, .. } => {
 2650                self.open_path(project_path, None, true, window, cx)
 2651            }
 2652            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2653                path,
 2654                OpenOptions {
 2655                    visible: Some(OpenVisible::None),
 2656                    ..Default::default()
 2657                },
 2658                window,
 2659                cx,
 2660            ),
 2661        }
 2662    }
 2663
 2664    pub fn absolute_path_of_worktree(
 2665        &self,
 2666        worktree_id: WorktreeId,
 2667        cx: &mut Context<Self>,
 2668    ) -> Option<PathBuf> {
 2669        self.project
 2670            .read(cx)
 2671            .worktree_for_id(worktree_id, cx)
 2672            // TODO: use `abs_path` or `root_dir`
 2673            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2674    }
 2675
 2676    fn add_folder_to_project(
 2677        &mut self,
 2678        _: &AddFolderToProject,
 2679        window: &mut Window,
 2680        cx: &mut Context<Self>,
 2681    ) {
 2682        let project = self.project.read(cx);
 2683        if project.is_via_collab() {
 2684            self.show_error(
 2685                &anyhow!("You cannot add folders to someone else's project"),
 2686                cx,
 2687            );
 2688            return;
 2689        }
 2690        let paths = self.prompt_for_open_path(
 2691            PathPromptOptions {
 2692                files: false,
 2693                directories: true,
 2694                multiple: true,
 2695                prompt: None,
 2696            },
 2697            DirectoryLister::Project(self.project.clone()),
 2698            window,
 2699            cx,
 2700        );
 2701        cx.spawn_in(window, async move |this, cx| {
 2702            if let Some(paths) = paths.await.log_err().flatten() {
 2703                let results = this
 2704                    .update_in(cx, |this, window, cx| {
 2705                        this.open_paths(
 2706                            paths,
 2707                            OpenOptions {
 2708                                visible: Some(OpenVisible::All),
 2709                                ..Default::default()
 2710                            },
 2711                            None,
 2712                            window,
 2713                            cx,
 2714                        )
 2715                    })?
 2716                    .await;
 2717                for result in results.into_iter().flatten() {
 2718                    result.log_err();
 2719                }
 2720            }
 2721            anyhow::Ok(())
 2722        })
 2723        .detach_and_log_err(cx);
 2724    }
 2725
 2726    pub fn project_path_for_path(
 2727        project: Entity<Project>,
 2728        abs_path: &Path,
 2729        visible: bool,
 2730        cx: &mut App,
 2731    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2732        let entry = project.update(cx, |project, cx| {
 2733            project.find_or_create_worktree(abs_path, visible, cx)
 2734        });
 2735        cx.spawn(async move |cx| {
 2736            let (worktree, path) = entry.await?;
 2737            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2738            Ok((
 2739                worktree,
 2740                ProjectPath {
 2741                    worktree_id,
 2742                    path: path.into(),
 2743                },
 2744            ))
 2745        })
 2746    }
 2747
 2748    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2749        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2750    }
 2751
 2752    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2753        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2754    }
 2755
 2756    pub fn items_of_type<'a, T: Item>(
 2757        &'a self,
 2758        cx: &'a App,
 2759    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2760        self.panes
 2761            .iter()
 2762            .flat_map(|pane| pane.read(cx).items_of_type())
 2763    }
 2764
 2765    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2766        self.active_pane().read(cx).active_item()
 2767    }
 2768
 2769    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2770        let item = self.active_item(cx)?;
 2771        item.to_any().downcast::<I>().ok()
 2772    }
 2773
 2774    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2775        self.active_item(cx).and_then(|item| item.project_path(cx))
 2776    }
 2777
 2778    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2779        self.recent_navigation_history_iter(cx)
 2780            .filter_map(|(path, abs_path)| {
 2781                let worktree = self
 2782                    .project
 2783                    .read(cx)
 2784                    .worktree_for_id(path.worktree_id, cx)?;
 2785                if worktree.read(cx).is_visible() {
 2786                    abs_path
 2787                } else {
 2788                    None
 2789                }
 2790            })
 2791            .next()
 2792    }
 2793
 2794    pub fn save_active_item(
 2795        &mut self,
 2796        save_intent: SaveIntent,
 2797        window: &mut Window,
 2798        cx: &mut App,
 2799    ) -> Task<Result<()>> {
 2800        let project = self.project.clone();
 2801        let pane = self.active_pane();
 2802        let item = pane.read(cx).active_item();
 2803        let pane = pane.downgrade();
 2804
 2805        window.spawn(cx, async move |cx| {
 2806            if let Some(item) = item {
 2807                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2808                    .await
 2809                    .map(|_| ())
 2810            } else {
 2811                Ok(())
 2812            }
 2813        })
 2814    }
 2815
 2816    pub fn close_inactive_items_and_panes(
 2817        &mut self,
 2818        action: &CloseInactiveTabsAndPanes,
 2819        window: &mut Window,
 2820        cx: &mut Context<Self>,
 2821    ) {
 2822        if let Some(task) = self.close_all_internal(
 2823            true,
 2824            action.save_intent.unwrap_or(SaveIntent::Close),
 2825            window,
 2826            cx,
 2827        ) {
 2828            task.detach_and_log_err(cx)
 2829        }
 2830    }
 2831
 2832    pub fn close_all_items_and_panes(
 2833        &mut self,
 2834        action: &CloseAllItemsAndPanes,
 2835        window: &mut Window,
 2836        cx: &mut Context<Self>,
 2837    ) {
 2838        if let Some(task) = self.close_all_internal(
 2839            false,
 2840            action.save_intent.unwrap_or(SaveIntent::Close),
 2841            window,
 2842            cx,
 2843        ) {
 2844            task.detach_and_log_err(cx)
 2845        }
 2846    }
 2847
 2848    fn close_all_internal(
 2849        &mut self,
 2850        retain_active_pane: bool,
 2851        save_intent: SaveIntent,
 2852        window: &mut Window,
 2853        cx: &mut Context<Self>,
 2854    ) -> Option<Task<Result<()>>> {
 2855        let current_pane = self.active_pane();
 2856
 2857        let mut tasks = Vec::new();
 2858
 2859        if retain_active_pane {
 2860            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2861                pane.close_other_items(
 2862                    &CloseOtherItems {
 2863                        save_intent: None,
 2864                        close_pinned: false,
 2865                    },
 2866                    None,
 2867                    window,
 2868                    cx,
 2869                )
 2870            });
 2871
 2872            tasks.push(current_pane_close);
 2873        }
 2874
 2875        for pane in self.panes() {
 2876            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2877                continue;
 2878            }
 2879
 2880            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2881                pane.close_all_items(
 2882                    &CloseAllItems {
 2883                        save_intent: Some(save_intent),
 2884                        close_pinned: false,
 2885                    },
 2886                    window,
 2887                    cx,
 2888                )
 2889            });
 2890
 2891            tasks.push(close_pane_items)
 2892        }
 2893
 2894        if tasks.is_empty() {
 2895            None
 2896        } else {
 2897            Some(cx.spawn_in(window, async move |_, _| {
 2898                for task in tasks {
 2899                    task.await?
 2900                }
 2901                Ok(())
 2902            }))
 2903        }
 2904    }
 2905
 2906    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2907        self.dock_at_position(position).read(cx).is_open()
 2908    }
 2909
 2910    pub fn toggle_dock(
 2911        &mut self,
 2912        dock_side: DockPosition,
 2913        window: &mut Window,
 2914        cx: &mut Context<Self>,
 2915    ) {
 2916        let dock = self.dock_at_position(dock_side);
 2917        let mut focus_center = false;
 2918        let mut reveal_dock = false;
 2919        dock.update(cx, |dock, cx| {
 2920            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2921            let was_visible = dock.is_open() && !other_is_zoomed;
 2922            dock.set_open(!was_visible, window, cx);
 2923
 2924            if dock.active_panel().is_none() {
 2925                let Some(panel_ix) = dock
 2926                    .first_enabled_panel_idx(cx)
 2927                    .log_with_level(log::Level::Info)
 2928                else {
 2929                    return;
 2930                };
 2931                dock.activate_panel(panel_ix, window, cx);
 2932            }
 2933
 2934            if let Some(active_panel) = dock.active_panel() {
 2935                if was_visible {
 2936                    if active_panel
 2937                        .panel_focus_handle(cx)
 2938                        .contains_focused(window, cx)
 2939                    {
 2940                        focus_center = true;
 2941                    }
 2942                } else {
 2943                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2944                    window.focus(focus_handle);
 2945                    reveal_dock = true;
 2946                }
 2947            }
 2948        });
 2949
 2950        if reveal_dock {
 2951            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2952        }
 2953
 2954        if focus_center {
 2955            self.active_pane
 2956                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2957        }
 2958
 2959        cx.notify();
 2960        self.serialize_workspace(window, cx);
 2961    }
 2962
 2963    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2964        self.all_docks().into_iter().find(|&dock| {
 2965            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2966        })
 2967    }
 2968
 2969    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2970        if let Some(dock) = self.active_dock(window, cx) {
 2971            dock.update(cx, |dock, cx| {
 2972                dock.set_open(false, window, cx);
 2973            });
 2974            return true;
 2975        }
 2976        false
 2977    }
 2978
 2979    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2980        for dock in self.all_docks() {
 2981            dock.update(cx, |dock, cx| {
 2982                dock.set_open(false, window, cx);
 2983            });
 2984        }
 2985
 2986        cx.focus_self(window);
 2987        cx.notify();
 2988        self.serialize_workspace(window, cx);
 2989    }
 2990
 2991    /// Transfer focus to the panel of the given type.
 2992    pub fn focus_panel<T: Panel>(
 2993        &mut self,
 2994        window: &mut Window,
 2995        cx: &mut Context<Self>,
 2996    ) -> Option<Entity<T>> {
 2997        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2998        panel.to_any().downcast().ok()
 2999    }
 3000
 3001    /// Focus the panel of the given type if it isn't already focused. If it is
 3002    /// already focused, then transfer focus back to the workspace center.
 3003    pub fn toggle_panel_focus<T: Panel>(
 3004        &mut self,
 3005        window: &mut Window,
 3006        cx: &mut Context<Self>,
 3007    ) -> bool {
 3008        let mut did_focus_panel = false;
 3009        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 3010            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 3011            did_focus_panel
 3012        });
 3013        did_focus_panel
 3014    }
 3015
 3016    pub fn activate_panel_for_proto_id(
 3017        &mut self,
 3018        panel_id: PanelId,
 3019        window: &mut Window,
 3020        cx: &mut Context<Self>,
 3021    ) -> Option<Arc<dyn PanelHandle>> {
 3022        let mut panel = None;
 3023        for dock in self.all_docks() {
 3024            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3025                panel = dock.update(cx, |dock, cx| {
 3026                    dock.activate_panel(panel_index, window, cx);
 3027                    dock.set_open(true, window, cx);
 3028                    dock.active_panel().cloned()
 3029                });
 3030                break;
 3031            }
 3032        }
 3033
 3034        if panel.is_some() {
 3035            cx.notify();
 3036            self.serialize_workspace(window, cx);
 3037        }
 3038
 3039        panel
 3040    }
 3041
 3042    /// Focus or unfocus the given panel type, depending on the given callback.
 3043    fn focus_or_unfocus_panel<T: Panel>(
 3044        &mut self,
 3045        window: &mut Window,
 3046        cx: &mut Context<Self>,
 3047        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3048    ) -> Option<Arc<dyn PanelHandle>> {
 3049        let mut result_panel = None;
 3050        let mut serialize = false;
 3051        for dock in self.all_docks() {
 3052            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3053                let mut focus_center = false;
 3054                let panel = dock.update(cx, |dock, cx| {
 3055                    dock.activate_panel(panel_index, window, cx);
 3056
 3057                    let panel = dock.active_panel().cloned();
 3058                    if let Some(panel) = panel.as_ref() {
 3059                        if should_focus(&**panel, window, cx) {
 3060                            dock.set_open(true, window, cx);
 3061                            panel.panel_focus_handle(cx).focus(window);
 3062                        } else {
 3063                            focus_center = true;
 3064                        }
 3065                    }
 3066                    panel
 3067                });
 3068
 3069                if focus_center {
 3070                    self.active_pane
 3071                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3072                }
 3073
 3074                result_panel = panel;
 3075                serialize = true;
 3076                break;
 3077            }
 3078        }
 3079
 3080        if serialize {
 3081            self.serialize_workspace(window, cx);
 3082        }
 3083
 3084        cx.notify();
 3085        result_panel
 3086    }
 3087
 3088    /// Open the panel of the given type
 3089    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3090        for dock in self.all_docks() {
 3091            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3092                dock.update(cx, |dock, cx| {
 3093                    dock.activate_panel(panel_index, window, cx);
 3094                    dock.set_open(true, window, cx);
 3095                });
 3096            }
 3097        }
 3098    }
 3099
 3100    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3101        self.all_docks()
 3102            .iter()
 3103            .find_map(|dock| dock.read(cx).panel::<T>())
 3104    }
 3105
 3106    fn dismiss_zoomed_items_to_reveal(
 3107        &mut self,
 3108        dock_to_reveal: Option<DockPosition>,
 3109        window: &mut Window,
 3110        cx: &mut Context<Self>,
 3111    ) {
 3112        // If a center pane is zoomed, unzoom it.
 3113        for pane in &self.panes {
 3114            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3115                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3116            }
 3117        }
 3118
 3119        // If another dock is zoomed, hide it.
 3120        let mut focus_center = false;
 3121        for dock in self.all_docks() {
 3122            dock.update(cx, |dock, cx| {
 3123                if Some(dock.position()) != dock_to_reveal
 3124                    && let Some(panel) = dock.active_panel()
 3125                    && panel.is_zoomed(window, cx)
 3126                {
 3127                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3128                    dock.set_open(false, window, cx);
 3129                }
 3130            });
 3131        }
 3132
 3133        if focus_center {
 3134            self.active_pane
 3135                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3136        }
 3137
 3138        if self.zoomed_position != dock_to_reveal {
 3139            self.zoomed = None;
 3140            self.zoomed_position = None;
 3141            cx.emit(Event::ZoomChanged);
 3142        }
 3143
 3144        cx.notify();
 3145    }
 3146
 3147    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3148        let pane = cx.new(|cx| {
 3149            let mut pane = Pane::new(
 3150                self.weak_handle(),
 3151                self.project.clone(),
 3152                self.pane_history_timestamp.clone(),
 3153                None,
 3154                NewFile.boxed_clone(),
 3155                window,
 3156                cx,
 3157            );
 3158            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3159            pane
 3160        });
 3161        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3162            .detach();
 3163        self.panes.push(pane.clone());
 3164
 3165        window.focus(&pane.focus_handle(cx));
 3166
 3167        cx.emit(Event::PaneAdded(pane.clone()));
 3168        pane
 3169    }
 3170
 3171    pub fn add_item_to_center(
 3172        &mut self,
 3173        item: Box<dyn ItemHandle>,
 3174        window: &mut Window,
 3175        cx: &mut Context<Self>,
 3176    ) -> bool {
 3177        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3178            if let Some(center_pane) = center_pane.upgrade() {
 3179                center_pane.update(cx, |pane, cx| {
 3180                    pane.add_item(item, true, true, None, window, cx)
 3181                });
 3182                true
 3183            } else {
 3184                false
 3185            }
 3186        } else {
 3187            false
 3188        }
 3189    }
 3190
 3191    pub fn add_item_to_active_pane(
 3192        &mut self,
 3193        item: Box<dyn ItemHandle>,
 3194        destination_index: Option<usize>,
 3195        focus_item: bool,
 3196        window: &mut Window,
 3197        cx: &mut App,
 3198    ) {
 3199        self.add_item(
 3200            self.active_pane.clone(),
 3201            item,
 3202            destination_index,
 3203            false,
 3204            focus_item,
 3205            window,
 3206            cx,
 3207        )
 3208    }
 3209
 3210    pub fn add_item(
 3211        &mut self,
 3212        pane: Entity<Pane>,
 3213        item: Box<dyn ItemHandle>,
 3214        destination_index: Option<usize>,
 3215        activate_pane: bool,
 3216        focus_item: bool,
 3217        window: &mut Window,
 3218        cx: &mut App,
 3219    ) {
 3220        if let Some(text) = item.telemetry_event_text(cx) {
 3221            telemetry::event!(text);
 3222        }
 3223
 3224        pane.update(cx, |pane, cx| {
 3225            pane.add_item(
 3226                item,
 3227                activate_pane,
 3228                focus_item,
 3229                destination_index,
 3230                window,
 3231                cx,
 3232            )
 3233        });
 3234    }
 3235
 3236    pub fn split_item(
 3237        &mut self,
 3238        split_direction: SplitDirection,
 3239        item: Box<dyn ItemHandle>,
 3240        window: &mut Window,
 3241        cx: &mut Context<Self>,
 3242    ) {
 3243        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3244        self.add_item(new_pane, item, None, true, true, window, cx);
 3245    }
 3246
 3247    pub fn open_abs_path(
 3248        &mut self,
 3249        abs_path: PathBuf,
 3250        options: OpenOptions,
 3251        window: &mut Window,
 3252        cx: &mut Context<Self>,
 3253    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3254        cx.spawn_in(window, async move |workspace, cx| {
 3255            let open_paths_task_result = workspace
 3256                .update_in(cx, |workspace, window, cx| {
 3257                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3258                })
 3259                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3260                .await;
 3261            anyhow::ensure!(
 3262                open_paths_task_result.len() == 1,
 3263                "open abs path {abs_path:?} task returned incorrect number of results"
 3264            );
 3265            match open_paths_task_result
 3266                .into_iter()
 3267                .next()
 3268                .expect("ensured single task result")
 3269            {
 3270                Some(open_result) => {
 3271                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3272                }
 3273                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3274            }
 3275        })
 3276    }
 3277
 3278    pub fn split_abs_path(
 3279        &mut self,
 3280        abs_path: PathBuf,
 3281        visible: bool,
 3282        window: &mut Window,
 3283        cx: &mut Context<Self>,
 3284    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3285        let project_path_task =
 3286            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3287        cx.spawn_in(window, async move |this, cx| {
 3288            let (_, path) = project_path_task.await?;
 3289            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3290                .await
 3291        })
 3292    }
 3293
 3294    pub fn open_path(
 3295        &mut self,
 3296        path: impl Into<ProjectPath>,
 3297        pane: Option<WeakEntity<Pane>>,
 3298        focus_item: bool,
 3299        window: &mut Window,
 3300        cx: &mut App,
 3301    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3302        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3303    }
 3304
 3305    pub fn open_path_preview(
 3306        &mut self,
 3307        path: impl Into<ProjectPath>,
 3308        pane: Option<WeakEntity<Pane>>,
 3309        focus_item: bool,
 3310        allow_preview: bool,
 3311        activate: bool,
 3312        window: &mut Window,
 3313        cx: &mut App,
 3314    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3315        let pane = pane.unwrap_or_else(|| {
 3316            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3317                self.panes
 3318                    .first()
 3319                    .expect("There must be an active pane")
 3320                    .downgrade()
 3321            })
 3322        });
 3323
 3324        let project_path = path.into();
 3325        let task = self.load_path(project_path.clone(), window, cx);
 3326        window.spawn(cx, async move |cx| {
 3327            let (project_entry_id, build_item) = task.await?;
 3328
 3329            pane.update_in(cx, |pane, window, cx| {
 3330                pane.open_item(
 3331                    project_entry_id,
 3332                    project_path,
 3333                    focus_item,
 3334                    allow_preview,
 3335                    activate,
 3336                    None,
 3337                    window,
 3338                    cx,
 3339                    build_item,
 3340                )
 3341            })
 3342        })
 3343    }
 3344
 3345    pub fn split_path(
 3346        &mut self,
 3347        path: impl Into<ProjectPath>,
 3348        window: &mut Window,
 3349        cx: &mut Context<Self>,
 3350    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3351        self.split_path_preview(path, false, None, window, cx)
 3352    }
 3353
 3354    pub fn split_path_preview(
 3355        &mut self,
 3356        path: impl Into<ProjectPath>,
 3357        allow_preview: bool,
 3358        split_direction: Option<SplitDirection>,
 3359        window: &mut Window,
 3360        cx: &mut Context<Self>,
 3361    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3362        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3363            self.panes
 3364                .first()
 3365                .expect("There must be an active pane")
 3366                .downgrade()
 3367        });
 3368
 3369        if let Member::Pane(center_pane) = &self.center.root
 3370            && center_pane.read(cx).items_len() == 0
 3371        {
 3372            return self.open_path(path, Some(pane), true, window, cx);
 3373        }
 3374
 3375        let project_path = path.into();
 3376        let task = self.load_path(project_path.clone(), window, cx);
 3377        cx.spawn_in(window, async move |this, cx| {
 3378            let (project_entry_id, build_item) = task.await?;
 3379            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3380                let pane = pane.upgrade()?;
 3381                let new_pane = this.split_pane(
 3382                    pane,
 3383                    split_direction.unwrap_or(SplitDirection::Right),
 3384                    window,
 3385                    cx,
 3386                );
 3387                new_pane.update(cx, |new_pane, cx| {
 3388                    Some(new_pane.open_item(
 3389                        project_entry_id,
 3390                        project_path,
 3391                        true,
 3392                        allow_preview,
 3393                        true,
 3394                        None,
 3395                        window,
 3396                        cx,
 3397                        build_item,
 3398                    ))
 3399                })
 3400            })
 3401            .map(|option| option.context("pane was dropped"))?
 3402        })
 3403    }
 3404
 3405    fn load_path(
 3406        &mut self,
 3407        path: ProjectPath,
 3408        window: &mut Window,
 3409        cx: &mut App,
 3410    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3411        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3412        registry.open_path(self.project(), &path, window, cx)
 3413    }
 3414
 3415    pub fn find_project_item<T>(
 3416        &self,
 3417        pane: &Entity<Pane>,
 3418        project_item: &Entity<T::Item>,
 3419        cx: &App,
 3420    ) -> Option<Entity<T>>
 3421    where
 3422        T: ProjectItem,
 3423    {
 3424        use project::ProjectItem as _;
 3425        let project_item = project_item.read(cx);
 3426        let entry_id = project_item.entry_id(cx);
 3427        let project_path = project_item.project_path(cx);
 3428
 3429        let mut item = None;
 3430        if let Some(entry_id) = entry_id {
 3431            item = pane.read(cx).item_for_entry(entry_id, cx);
 3432        }
 3433        if item.is_none()
 3434            && let Some(project_path) = project_path
 3435        {
 3436            item = pane.read(cx).item_for_path(project_path, cx);
 3437        }
 3438
 3439        item.and_then(|item| item.downcast::<T>())
 3440    }
 3441
 3442    pub fn is_project_item_open<T>(
 3443        &self,
 3444        pane: &Entity<Pane>,
 3445        project_item: &Entity<T::Item>,
 3446        cx: &App,
 3447    ) -> bool
 3448    where
 3449        T: ProjectItem,
 3450    {
 3451        self.find_project_item::<T>(pane, project_item, cx)
 3452            .is_some()
 3453    }
 3454
 3455    pub fn open_project_item<T>(
 3456        &mut self,
 3457        pane: Entity<Pane>,
 3458        project_item: Entity<T::Item>,
 3459        activate_pane: bool,
 3460        focus_item: bool,
 3461        window: &mut Window,
 3462        cx: &mut Context<Self>,
 3463    ) -> Entity<T>
 3464    where
 3465        T: ProjectItem,
 3466    {
 3467        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3468            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3469            return item;
 3470        }
 3471
 3472        let item = pane.update(cx, |pane, cx| {
 3473            cx.new(|cx| {
 3474                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3475            })
 3476        });
 3477        let item_id = item.item_id();
 3478        let mut destination_index = None;
 3479        pane.update(cx, |pane, cx| {
 3480            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation
 3481                && let Some(preview_item_id) = pane.preview_item_id()
 3482                && preview_item_id != item_id
 3483            {
 3484                destination_index = pane.close_current_preview_item(window, cx);
 3485            }
 3486            pane.set_preview_item_id(Some(item.item_id()), cx)
 3487        });
 3488
 3489        self.add_item(
 3490            pane,
 3491            Box::new(item.clone()),
 3492            destination_index,
 3493            activate_pane,
 3494            focus_item,
 3495            window,
 3496            cx,
 3497        );
 3498        item
 3499    }
 3500
 3501    pub fn open_shared_screen(
 3502        &mut self,
 3503        peer_id: PeerId,
 3504        window: &mut Window,
 3505        cx: &mut Context<Self>,
 3506    ) {
 3507        if let Some(shared_screen) =
 3508            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3509        {
 3510            self.active_pane.update(cx, |pane, cx| {
 3511                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3512            });
 3513        }
 3514    }
 3515
 3516    pub fn activate_item(
 3517        &mut self,
 3518        item: &dyn ItemHandle,
 3519        activate_pane: bool,
 3520        focus_item: bool,
 3521        window: &mut Window,
 3522        cx: &mut App,
 3523    ) -> bool {
 3524        let result = self.panes.iter().find_map(|pane| {
 3525            pane.read(cx)
 3526                .index_for_item(item)
 3527                .map(|ix| (pane.clone(), ix))
 3528        });
 3529        if let Some((pane, ix)) = result {
 3530            pane.update(cx, |pane, cx| {
 3531                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3532            });
 3533            true
 3534        } else {
 3535            false
 3536        }
 3537    }
 3538
 3539    fn activate_pane_at_index(
 3540        &mut self,
 3541        action: &ActivatePane,
 3542        window: &mut Window,
 3543        cx: &mut Context<Self>,
 3544    ) {
 3545        let panes = self.center.panes();
 3546        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3547            window.focus(&pane.focus_handle(cx));
 3548        } else {
 3549            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3550        }
 3551    }
 3552
 3553    fn move_item_to_pane_at_index(
 3554        &mut self,
 3555        action: &MoveItemToPane,
 3556        window: &mut Window,
 3557        cx: &mut Context<Self>,
 3558    ) {
 3559        let panes = self.center.panes();
 3560        let destination = match panes.get(action.destination) {
 3561            Some(&destination) => destination.clone(),
 3562            None => {
 3563                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3564                    return;
 3565                }
 3566                let direction = SplitDirection::Right;
 3567                let split_off_pane = self
 3568                    .find_pane_in_direction(direction, cx)
 3569                    .unwrap_or_else(|| self.active_pane.clone());
 3570                let new_pane = self.add_pane(window, cx);
 3571                if self
 3572                    .center
 3573                    .split(&split_off_pane, &new_pane, direction)
 3574                    .log_err()
 3575                    .is_none()
 3576                {
 3577                    return;
 3578                };
 3579                new_pane
 3580            }
 3581        };
 3582
 3583        if action.clone {
 3584            clone_active_item(
 3585                self.database_id(),
 3586                &self.active_pane,
 3587                &destination,
 3588                action.focus,
 3589                window,
 3590                cx,
 3591            )
 3592        } else {
 3593            move_active_item(
 3594                &self.active_pane,
 3595                &destination,
 3596                action.focus,
 3597                true,
 3598                window,
 3599                cx,
 3600            )
 3601        }
 3602    }
 3603
 3604    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3605        let panes = self.center.panes();
 3606        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3607            let next_ix = (ix + 1) % panes.len();
 3608            let next_pane = panes[next_ix].clone();
 3609            window.focus(&next_pane.focus_handle(cx));
 3610        }
 3611    }
 3612
 3613    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3614        let panes = self.center.panes();
 3615        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3616            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3617            let prev_pane = panes[prev_ix].clone();
 3618            window.focus(&prev_pane.focus_handle(cx));
 3619        }
 3620    }
 3621
 3622    pub fn activate_pane_in_direction(
 3623        &mut self,
 3624        direction: SplitDirection,
 3625        window: &mut Window,
 3626        cx: &mut App,
 3627    ) {
 3628        use ActivateInDirectionTarget as Target;
 3629        enum Origin {
 3630            LeftDock,
 3631            RightDock,
 3632            BottomDock,
 3633            Center,
 3634        }
 3635
 3636        let origin: Origin = [
 3637            (&self.left_dock, Origin::LeftDock),
 3638            (&self.right_dock, Origin::RightDock),
 3639            (&self.bottom_dock, Origin::BottomDock),
 3640        ]
 3641        .into_iter()
 3642        .find_map(|(dock, origin)| {
 3643            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3644                Some(origin)
 3645            } else {
 3646                None
 3647            }
 3648        })
 3649        .unwrap_or(Origin::Center);
 3650
 3651        let get_last_active_pane = || {
 3652            let pane = self
 3653                .last_active_center_pane
 3654                .clone()
 3655                .unwrap_or_else(|| {
 3656                    self.panes
 3657                        .first()
 3658                        .expect("There must be an active pane")
 3659                        .downgrade()
 3660                })
 3661                .upgrade()?;
 3662            (pane.read(cx).items_len() != 0).then_some(pane)
 3663        };
 3664
 3665        let try_dock =
 3666            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3667
 3668        let target = match (origin, direction) {
 3669            // We're in the center, so we first try to go to a different pane,
 3670            // otherwise try to go to a dock.
 3671            (Origin::Center, direction) => {
 3672                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3673                    Some(Target::Pane(pane))
 3674                } else {
 3675                    match direction {
 3676                        SplitDirection::Up => None,
 3677                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3678                        SplitDirection::Left => try_dock(&self.left_dock),
 3679                        SplitDirection::Right => try_dock(&self.right_dock),
 3680                    }
 3681                }
 3682            }
 3683
 3684            (Origin::LeftDock, SplitDirection::Right) => {
 3685                if let Some(last_active_pane) = get_last_active_pane() {
 3686                    Some(Target::Pane(last_active_pane))
 3687                } else {
 3688                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3689                }
 3690            }
 3691
 3692            (Origin::LeftDock, SplitDirection::Down)
 3693            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3694
 3695            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3696            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3697            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3698
 3699            (Origin::RightDock, SplitDirection::Left) => {
 3700                if let Some(last_active_pane) = get_last_active_pane() {
 3701                    Some(Target::Pane(last_active_pane))
 3702                } else {
 3703                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3704                }
 3705            }
 3706
 3707            _ => None,
 3708        };
 3709
 3710        match target {
 3711            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3712                let pane = pane.read(cx);
 3713                if let Some(item) = pane.active_item() {
 3714                    item.item_focus_handle(cx).focus(window);
 3715                } else {
 3716                    log::error!(
 3717                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3718                    );
 3719                }
 3720            }
 3721            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3722                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3723                window.defer(cx, move |window, cx| {
 3724                    let dock = dock.read(cx);
 3725                    if let Some(panel) = dock.active_panel() {
 3726                        panel.panel_focus_handle(cx).focus(window);
 3727                    } else {
 3728                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3729                    }
 3730                })
 3731            }
 3732            None => {}
 3733        }
 3734    }
 3735
 3736    pub fn move_item_to_pane_in_direction(
 3737        &mut self,
 3738        action: &MoveItemToPaneInDirection,
 3739        window: &mut Window,
 3740        cx: &mut Context<Self>,
 3741    ) {
 3742        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3743            Some(destination) => destination,
 3744            None => {
 3745                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3746                    return;
 3747                }
 3748                let new_pane = self.add_pane(window, cx);
 3749                if self
 3750                    .center
 3751                    .split(&self.active_pane, &new_pane, action.direction)
 3752                    .log_err()
 3753                    .is_none()
 3754                {
 3755                    return;
 3756                };
 3757                new_pane
 3758            }
 3759        };
 3760
 3761        if action.clone {
 3762            clone_active_item(
 3763                self.database_id(),
 3764                &self.active_pane,
 3765                &destination,
 3766                action.focus,
 3767                window,
 3768                cx,
 3769            )
 3770        } else {
 3771            move_active_item(
 3772                &self.active_pane,
 3773                &destination,
 3774                action.focus,
 3775                true,
 3776                window,
 3777                cx,
 3778            );
 3779        }
 3780    }
 3781
 3782    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3783        self.center.bounding_box_for_pane(pane)
 3784    }
 3785
 3786    pub fn find_pane_in_direction(
 3787        &mut self,
 3788        direction: SplitDirection,
 3789        cx: &App,
 3790    ) -> Option<Entity<Pane>> {
 3791        self.center
 3792            .find_pane_in_direction(&self.active_pane, direction, cx)
 3793            .cloned()
 3794    }
 3795
 3796    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3797        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3798            self.center.swap(&self.active_pane, &to);
 3799            cx.notify();
 3800        }
 3801    }
 3802
 3803    pub fn resize_pane(
 3804        &mut self,
 3805        axis: gpui::Axis,
 3806        amount: Pixels,
 3807        window: &mut Window,
 3808        cx: &mut Context<Self>,
 3809    ) {
 3810        let docks = self.all_docks();
 3811        let active_dock = docks
 3812            .into_iter()
 3813            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3814
 3815        if let Some(dock) = active_dock {
 3816            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3817                return;
 3818            };
 3819            match dock.read(cx).position() {
 3820                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3821                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3822                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3823            }
 3824        } else {
 3825            self.center
 3826                .resize(&self.active_pane, axis, amount, &self.bounds);
 3827        }
 3828        cx.notify();
 3829    }
 3830
 3831    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3832        self.center.reset_pane_sizes();
 3833        cx.notify();
 3834    }
 3835
 3836    fn handle_pane_focused(
 3837        &mut self,
 3838        pane: Entity<Pane>,
 3839        window: &mut Window,
 3840        cx: &mut Context<Self>,
 3841    ) {
 3842        // This is explicitly hoisted out of the following check for pane identity as
 3843        // terminal panel panes are not registered as a center panes.
 3844        self.status_bar.update(cx, |status_bar, cx| {
 3845            status_bar.set_active_pane(&pane, window, cx);
 3846        });
 3847        if self.active_pane != pane {
 3848            self.set_active_pane(&pane, window, cx);
 3849        }
 3850
 3851        if self.last_active_center_pane.is_none() {
 3852            self.last_active_center_pane = Some(pane.downgrade());
 3853        }
 3854
 3855        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3856        if pane.read(cx).is_zoomed() {
 3857            self.zoomed = Some(pane.downgrade().into());
 3858        } else {
 3859            self.zoomed = None;
 3860        }
 3861        self.zoomed_position = None;
 3862        cx.emit(Event::ZoomChanged);
 3863        self.update_active_view_for_followers(window, cx);
 3864        pane.update(cx, |pane, _| {
 3865            pane.track_alternate_file_items();
 3866        });
 3867
 3868        cx.notify();
 3869    }
 3870
 3871    fn set_active_pane(
 3872        &mut self,
 3873        pane: &Entity<Pane>,
 3874        window: &mut Window,
 3875        cx: &mut Context<Self>,
 3876    ) {
 3877        self.active_pane = pane.clone();
 3878        self.active_item_path_changed(window, cx);
 3879        self.last_active_center_pane = Some(pane.downgrade());
 3880    }
 3881
 3882    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3883        self.update_active_view_for_followers(window, cx);
 3884    }
 3885
 3886    fn handle_pane_event(
 3887        &mut self,
 3888        pane: &Entity<Pane>,
 3889        event: &pane::Event,
 3890        window: &mut Window,
 3891        cx: &mut Context<Self>,
 3892    ) {
 3893        let mut serialize_workspace = true;
 3894        match event {
 3895            pane::Event::AddItem { item } => {
 3896                item.added_to_pane(self, pane.clone(), window, cx);
 3897                cx.emit(Event::ItemAdded {
 3898                    item: item.boxed_clone(),
 3899                });
 3900            }
 3901            pane::Event::Split(direction) => {
 3902                self.split_and_clone(pane.clone(), *direction, window, cx);
 3903            }
 3904            pane::Event::JoinIntoNext => {
 3905                self.join_pane_into_next(pane.clone(), window, cx);
 3906            }
 3907            pane::Event::JoinAll => {
 3908                self.join_all_panes(window, cx);
 3909            }
 3910            pane::Event::Remove { focus_on_pane } => {
 3911                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3912            }
 3913            pane::Event::ActivateItem {
 3914                local,
 3915                focus_changed,
 3916            } => {
 3917                window.invalidate_character_coordinates();
 3918
 3919                pane.update(cx, |pane, _| {
 3920                    pane.track_alternate_file_items();
 3921                });
 3922                if *local {
 3923                    self.unfollow_in_pane(pane, window, cx);
 3924                }
 3925                serialize_workspace = *focus_changed || pane != self.active_pane();
 3926                if pane == self.active_pane() {
 3927                    self.active_item_path_changed(window, cx);
 3928                    self.update_active_view_for_followers(window, cx);
 3929                } else if *local {
 3930                    self.set_active_pane(pane, window, cx);
 3931                }
 3932            }
 3933            pane::Event::UserSavedItem { item, save_intent } => {
 3934                cx.emit(Event::UserSavedItem {
 3935                    pane: pane.downgrade(),
 3936                    item: item.boxed_clone(),
 3937                    save_intent: *save_intent,
 3938                });
 3939                serialize_workspace = false;
 3940            }
 3941            pane::Event::ChangeItemTitle => {
 3942                if *pane == self.active_pane {
 3943                    self.active_item_path_changed(window, cx);
 3944                }
 3945                serialize_workspace = false;
 3946            }
 3947            pane::Event::RemoveItem { .. } => {}
 3948            pane::Event::RemovedItem { item } => {
 3949                cx.emit(Event::ActiveItemChanged);
 3950                self.update_window_edited(window, cx);
 3951                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 3952                    && entry.get().entity_id() == pane.entity_id()
 3953                {
 3954                    entry.remove();
 3955                }
 3956            }
 3957            pane::Event::Focus => {
 3958                window.invalidate_character_coordinates();
 3959                self.handle_pane_focused(pane.clone(), window, cx);
 3960            }
 3961            pane::Event::ZoomIn => {
 3962                if *pane == self.active_pane {
 3963                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3964                    if pane.read(cx).has_focus(window, cx) {
 3965                        self.zoomed = Some(pane.downgrade().into());
 3966                        self.zoomed_position = None;
 3967                        cx.emit(Event::ZoomChanged);
 3968                    }
 3969                    cx.notify();
 3970                }
 3971            }
 3972            pane::Event::ZoomOut => {
 3973                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3974                if self.zoomed_position.is_none() {
 3975                    self.zoomed = None;
 3976                    cx.emit(Event::ZoomChanged);
 3977                }
 3978                cx.notify();
 3979            }
 3980            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3981        }
 3982
 3983        if serialize_workspace {
 3984            self.serialize_workspace(window, cx);
 3985        }
 3986    }
 3987
 3988    pub fn unfollow_in_pane(
 3989        &mut self,
 3990        pane: &Entity<Pane>,
 3991        window: &mut Window,
 3992        cx: &mut Context<Workspace>,
 3993    ) -> Option<CollaboratorId> {
 3994        let leader_id = self.leader_for_pane(pane)?;
 3995        self.unfollow(leader_id, window, cx);
 3996        Some(leader_id)
 3997    }
 3998
 3999    pub fn split_pane(
 4000        &mut self,
 4001        pane_to_split: Entity<Pane>,
 4002        split_direction: SplitDirection,
 4003        window: &mut Window,
 4004        cx: &mut Context<Self>,
 4005    ) -> Entity<Pane> {
 4006        let new_pane = self.add_pane(window, cx);
 4007        self.center
 4008            .split(&pane_to_split, &new_pane, split_direction)
 4009            .unwrap();
 4010        cx.notify();
 4011        new_pane
 4012    }
 4013
 4014    pub fn split_and_clone(
 4015        &mut self,
 4016        pane: Entity<Pane>,
 4017        direction: SplitDirection,
 4018        window: &mut Window,
 4019        cx: &mut Context<Self>,
 4020    ) -> Option<Entity<Pane>> {
 4021        let item = pane.read(cx).active_item()?;
 4022        let maybe_pane_handle =
 4023            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 4024                let new_pane = self.add_pane(window, cx);
 4025                new_pane.update(cx, |pane, cx| {
 4026                    pane.add_item(clone, true, true, None, window, cx)
 4027                });
 4028                self.center.split(&pane, &new_pane, direction).unwrap();
 4029                Some(new_pane)
 4030            } else {
 4031                None
 4032            };
 4033        cx.notify();
 4034        maybe_pane_handle
 4035    }
 4036
 4037    pub fn split_pane_with_item(
 4038        &mut self,
 4039        pane_to_split: WeakEntity<Pane>,
 4040        split_direction: SplitDirection,
 4041        from: WeakEntity<Pane>,
 4042        item_id_to_move: EntityId,
 4043        window: &mut Window,
 4044        cx: &mut Context<Self>,
 4045    ) {
 4046        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4047            return;
 4048        };
 4049        let Some(from) = from.upgrade() else {
 4050            return;
 4051        };
 4052
 4053        let new_pane = self.add_pane(window, cx);
 4054        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4055        self.center
 4056            .split(&pane_to_split, &new_pane, split_direction)
 4057            .unwrap();
 4058        cx.notify();
 4059    }
 4060
 4061    pub fn split_pane_with_project_entry(
 4062        &mut self,
 4063        pane_to_split: WeakEntity<Pane>,
 4064        split_direction: SplitDirection,
 4065        project_entry: ProjectEntryId,
 4066        window: &mut Window,
 4067        cx: &mut Context<Self>,
 4068    ) -> Option<Task<Result<()>>> {
 4069        let pane_to_split = pane_to_split.upgrade()?;
 4070        let new_pane = self.add_pane(window, cx);
 4071        self.center
 4072            .split(&pane_to_split, &new_pane, split_direction)
 4073            .unwrap();
 4074
 4075        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4076        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4077        Some(cx.foreground_executor().spawn(async move {
 4078            task.await?;
 4079            Ok(())
 4080        }))
 4081    }
 4082
 4083    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4084        let active_item = self.active_pane.read(cx).active_item();
 4085        for pane in &self.panes {
 4086            join_pane_into_active(&self.active_pane, pane, window, cx);
 4087        }
 4088        if let Some(active_item) = active_item {
 4089            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4090        }
 4091        cx.notify();
 4092    }
 4093
 4094    pub fn join_pane_into_next(
 4095        &mut self,
 4096        pane: Entity<Pane>,
 4097        window: &mut Window,
 4098        cx: &mut Context<Self>,
 4099    ) {
 4100        let next_pane = self
 4101            .find_pane_in_direction(SplitDirection::Right, cx)
 4102            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4103            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4104            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4105        let Some(next_pane) = next_pane else {
 4106            return;
 4107        };
 4108        move_all_items(&pane, &next_pane, window, cx);
 4109        cx.notify();
 4110    }
 4111
 4112    fn remove_pane(
 4113        &mut self,
 4114        pane: Entity<Pane>,
 4115        focus_on: Option<Entity<Pane>>,
 4116        window: &mut Window,
 4117        cx: &mut Context<Self>,
 4118    ) {
 4119        if self.center.remove(&pane).unwrap() {
 4120            self.force_remove_pane(&pane, &focus_on, window, cx);
 4121            self.unfollow_in_pane(&pane, window, cx);
 4122            self.last_leaders_by_pane.remove(&pane.downgrade());
 4123            for removed_item in pane.read(cx).items() {
 4124                self.panes_by_item.remove(&removed_item.item_id());
 4125            }
 4126
 4127            cx.notify();
 4128        } else {
 4129            self.active_item_path_changed(window, cx);
 4130        }
 4131        cx.emit(Event::PaneRemoved);
 4132    }
 4133
 4134    pub fn panes(&self) -> &[Entity<Pane>] {
 4135        &self.panes
 4136    }
 4137
 4138    pub fn active_pane(&self) -> &Entity<Pane> {
 4139        &self.active_pane
 4140    }
 4141
 4142    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4143        for dock in self.all_docks() {
 4144            if dock.focus_handle(cx).contains_focused(window, cx)
 4145                && let Some(pane) = dock
 4146                    .read(cx)
 4147                    .active_panel()
 4148                    .and_then(|panel| panel.pane(cx))
 4149            {
 4150                return pane;
 4151            }
 4152        }
 4153        self.active_pane().clone()
 4154    }
 4155
 4156    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4157        self.find_pane_in_direction(SplitDirection::Right, cx)
 4158            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4159            .unwrap_or_else(|| {
 4160                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4161            })
 4162    }
 4163
 4164    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4165        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4166        weak_pane.upgrade()
 4167    }
 4168
 4169    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4170        self.follower_states.retain(|leader_id, state| {
 4171            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4172                for item in state.items_by_leader_view_id.values() {
 4173                    item.view.set_leader_id(None, window, cx);
 4174                }
 4175                false
 4176            } else {
 4177                true
 4178            }
 4179        });
 4180        cx.notify();
 4181    }
 4182
 4183    pub fn start_following(
 4184        &mut self,
 4185        leader_id: impl Into<CollaboratorId>,
 4186        window: &mut Window,
 4187        cx: &mut Context<Self>,
 4188    ) -> Option<Task<Result<()>>> {
 4189        let leader_id = leader_id.into();
 4190        let pane = self.active_pane().clone();
 4191
 4192        self.last_leaders_by_pane
 4193            .insert(pane.downgrade(), leader_id);
 4194        self.unfollow(leader_id, window, cx);
 4195        self.unfollow_in_pane(&pane, window, cx);
 4196        self.follower_states.insert(
 4197            leader_id,
 4198            FollowerState {
 4199                center_pane: pane.clone(),
 4200                dock_pane: None,
 4201                active_view_id: None,
 4202                items_by_leader_view_id: Default::default(),
 4203            },
 4204        );
 4205        cx.notify();
 4206
 4207        match leader_id {
 4208            CollaboratorId::PeerId(leader_peer_id) => {
 4209                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4210                let project_id = self.project.read(cx).remote_id();
 4211                let request = self.app_state.client.request(proto::Follow {
 4212                    room_id,
 4213                    project_id,
 4214                    leader_id: Some(leader_peer_id),
 4215                });
 4216
 4217                Some(cx.spawn_in(window, async move |this, cx| {
 4218                    let response = request.await?;
 4219                    this.update(cx, |this, _| {
 4220                        let state = this
 4221                            .follower_states
 4222                            .get_mut(&leader_id)
 4223                            .context("following interrupted")?;
 4224                        state.active_view_id = response
 4225                            .active_view
 4226                            .as_ref()
 4227                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4228                        anyhow::Ok(())
 4229                    })??;
 4230                    if let Some(view) = response.active_view {
 4231                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4232                    }
 4233                    this.update_in(cx, |this, window, cx| {
 4234                        this.leader_updated(leader_id, window, cx)
 4235                    })?;
 4236                    Ok(())
 4237                }))
 4238            }
 4239            CollaboratorId::Agent => {
 4240                self.leader_updated(leader_id, window, cx)?;
 4241                Some(Task::ready(Ok(())))
 4242            }
 4243        }
 4244    }
 4245
 4246    pub fn follow_next_collaborator(
 4247        &mut self,
 4248        _: &FollowNextCollaborator,
 4249        window: &mut Window,
 4250        cx: &mut Context<Self>,
 4251    ) {
 4252        let collaborators = self.project.read(cx).collaborators();
 4253        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4254            let mut collaborators = collaborators.keys().copied();
 4255            for peer_id in collaborators.by_ref() {
 4256                if CollaboratorId::PeerId(peer_id) == leader_id {
 4257                    break;
 4258                }
 4259            }
 4260            collaborators.next().map(CollaboratorId::PeerId)
 4261        } else if let Some(last_leader_id) =
 4262            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4263        {
 4264            match last_leader_id {
 4265                CollaboratorId::PeerId(peer_id) => {
 4266                    if collaborators.contains_key(peer_id) {
 4267                        Some(*last_leader_id)
 4268                    } else {
 4269                        None
 4270                    }
 4271                }
 4272                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4273            }
 4274        } else {
 4275            None
 4276        };
 4277
 4278        let pane = self.active_pane.clone();
 4279        let Some(leader_id) = next_leader_id.or_else(|| {
 4280            Some(CollaboratorId::PeerId(
 4281                collaborators.keys().copied().next()?,
 4282            ))
 4283        }) else {
 4284            return;
 4285        };
 4286        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4287            return;
 4288        }
 4289        if let Some(task) = self.start_following(leader_id, window, cx) {
 4290            task.detach_and_log_err(cx)
 4291        }
 4292    }
 4293
 4294    pub fn follow(
 4295        &mut self,
 4296        leader_id: impl Into<CollaboratorId>,
 4297        window: &mut Window,
 4298        cx: &mut Context<Self>,
 4299    ) {
 4300        let leader_id = leader_id.into();
 4301
 4302        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4303            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4304                return;
 4305            };
 4306            let room = room.read(cx);
 4307            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4308                return;
 4309            };
 4310
 4311            let project = self.project.read(cx);
 4312
 4313            let other_project_id = match remote_participant.location {
 4314                call::ParticipantLocation::External => None,
 4315                call::ParticipantLocation::UnsharedProject => None,
 4316                call::ParticipantLocation::SharedProject { project_id } => {
 4317                    if Some(project_id) == project.remote_id() {
 4318                        None
 4319                    } else {
 4320                        Some(project_id)
 4321                    }
 4322                }
 4323            };
 4324
 4325            // if they are active in another project, follow there.
 4326            if let Some(project_id) = other_project_id {
 4327                let app_state = self.app_state.clone();
 4328                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4329                    .detach_and_log_err(cx);
 4330            }
 4331        }
 4332
 4333        // if you're already following, find the right pane and focus it.
 4334        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4335            window.focus(&follower_state.pane().focus_handle(cx));
 4336
 4337            return;
 4338        }
 4339
 4340        // Otherwise, follow.
 4341        if let Some(task) = self.start_following(leader_id, window, cx) {
 4342            task.detach_and_log_err(cx)
 4343        }
 4344    }
 4345
 4346    pub fn unfollow(
 4347        &mut self,
 4348        leader_id: impl Into<CollaboratorId>,
 4349        window: &mut Window,
 4350        cx: &mut Context<Self>,
 4351    ) -> Option<()> {
 4352        cx.notify();
 4353
 4354        let leader_id = leader_id.into();
 4355        let state = self.follower_states.remove(&leader_id)?;
 4356        for (_, item) in state.items_by_leader_view_id {
 4357            item.view.set_leader_id(None, window, cx);
 4358        }
 4359
 4360        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4361            let project_id = self.project.read(cx).remote_id();
 4362            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4363            self.app_state
 4364                .client
 4365                .send(proto::Unfollow {
 4366                    room_id,
 4367                    project_id,
 4368                    leader_id: Some(leader_peer_id),
 4369                })
 4370                .log_err();
 4371        }
 4372
 4373        Some(())
 4374    }
 4375
 4376    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4377        self.follower_states.contains_key(&id.into())
 4378    }
 4379
 4380    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4381        cx.emit(Event::ActiveItemChanged);
 4382        let active_entry = self.active_project_path(cx);
 4383        self.project
 4384            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4385
 4386        self.update_window_title(window, cx);
 4387    }
 4388
 4389    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4390        let project = self.project().read(cx);
 4391        let mut title = String::new();
 4392
 4393        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4394            if i > 0 {
 4395                title.push_str(", ");
 4396            }
 4397            title.push_str(name);
 4398        }
 4399
 4400        if title.is_empty() {
 4401            title = "empty project".to_string();
 4402        }
 4403
 4404        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4405            let filename = path
 4406                .path
 4407                .file_name()
 4408                .map(|s| s.to_string_lossy())
 4409                .or_else(|| {
 4410                    Some(Cow::Borrowed(
 4411                        project
 4412                            .worktree_for_id(path.worktree_id, cx)?
 4413                            .read(cx)
 4414                            .root_name(),
 4415                    ))
 4416                });
 4417
 4418            if let Some(filename) = filename {
 4419                title.push_str("");
 4420                title.push_str(filename.as_ref());
 4421            }
 4422        }
 4423
 4424        if project.is_via_collab() {
 4425            title.push_str("");
 4426        } else if project.is_shared() {
 4427            title.push_str("");
 4428        }
 4429
 4430        if let Some(last_title) = self.last_window_title.as_ref()
 4431            && &title == last_title
 4432        {
 4433            return;
 4434        }
 4435        window.set_window_title(&title);
 4436        self.last_window_title = Some(title);
 4437    }
 4438
 4439    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4440        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4441        if is_edited != self.window_edited {
 4442            self.window_edited = is_edited;
 4443            window.set_window_edited(self.window_edited)
 4444        }
 4445    }
 4446
 4447    fn update_item_dirty_state(
 4448        &mut self,
 4449        item: &dyn ItemHandle,
 4450        window: &mut Window,
 4451        cx: &mut App,
 4452    ) {
 4453        let is_dirty = item.is_dirty(cx);
 4454        let item_id = item.item_id();
 4455        let was_dirty = self.dirty_items.contains_key(&item_id);
 4456        if is_dirty == was_dirty {
 4457            return;
 4458        }
 4459        if was_dirty {
 4460            self.dirty_items.remove(&item_id);
 4461            self.update_window_edited(window, cx);
 4462            return;
 4463        }
 4464        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4465            let s = item.on_release(
 4466                cx,
 4467                Box::new(move |cx| {
 4468                    window_handle
 4469                        .update(cx, |this, window, cx| {
 4470                            this.dirty_items.remove(&item_id);
 4471                            this.update_window_edited(window, cx)
 4472                        })
 4473                        .ok();
 4474                }),
 4475            );
 4476            self.dirty_items.insert(item_id, s);
 4477            self.update_window_edited(window, cx);
 4478        }
 4479    }
 4480
 4481    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4482        if self.notifications.is_empty() {
 4483            None
 4484        } else {
 4485            Some(
 4486                div()
 4487                    .absolute()
 4488                    .right_3()
 4489                    .bottom_3()
 4490                    .w_112()
 4491                    .h_full()
 4492                    .flex()
 4493                    .flex_col()
 4494                    .justify_end()
 4495                    .gap_2()
 4496                    .children(
 4497                        self.notifications
 4498                            .iter()
 4499                            .map(|(_, notification)| notification.clone().into_any()),
 4500                    ),
 4501            )
 4502        }
 4503    }
 4504
 4505    // RPC handlers
 4506
 4507    fn active_view_for_follower(
 4508        &self,
 4509        follower_project_id: Option<u64>,
 4510        window: &mut Window,
 4511        cx: &mut Context<Self>,
 4512    ) -> Option<proto::View> {
 4513        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4514        let item = item?;
 4515        let leader_id = self
 4516            .pane_for(&*item)
 4517            .and_then(|pane| self.leader_for_pane(&pane));
 4518        let leader_peer_id = match leader_id {
 4519            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4520            Some(CollaboratorId::Agent) | None => None,
 4521        };
 4522
 4523        let item_handle = item.to_followable_item_handle(cx)?;
 4524        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4525        let variant = item_handle.to_state_proto(window, cx)?;
 4526
 4527        if item_handle.is_project_item(window, cx)
 4528            && (follower_project_id.is_none()
 4529                || follower_project_id != self.project.read(cx).remote_id())
 4530        {
 4531            return None;
 4532        }
 4533
 4534        Some(proto::View {
 4535            id: id.to_proto(),
 4536            leader_id: leader_peer_id,
 4537            variant: Some(variant),
 4538            panel_id: panel_id.map(|id| id as i32),
 4539        })
 4540    }
 4541
 4542    fn handle_follow(
 4543        &mut self,
 4544        follower_project_id: Option<u64>,
 4545        window: &mut Window,
 4546        cx: &mut Context<Self>,
 4547    ) -> proto::FollowResponse {
 4548        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4549
 4550        cx.notify();
 4551        proto::FollowResponse {
 4552            // TODO: Remove after version 0.145.x stabilizes.
 4553            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4554            views: active_view.iter().cloned().collect(),
 4555            active_view,
 4556        }
 4557    }
 4558
 4559    fn handle_update_followers(
 4560        &mut self,
 4561        leader_id: PeerId,
 4562        message: proto::UpdateFollowers,
 4563        _window: &mut Window,
 4564        _cx: &mut Context<Self>,
 4565    ) {
 4566        self.leader_updates_tx
 4567            .unbounded_send((leader_id, message))
 4568            .ok();
 4569    }
 4570
 4571    async fn process_leader_update(
 4572        this: &WeakEntity<Self>,
 4573        leader_id: PeerId,
 4574        update: proto::UpdateFollowers,
 4575        cx: &mut AsyncWindowContext,
 4576    ) -> Result<()> {
 4577        match update.variant.context("invalid update")? {
 4578            proto::update_followers::Variant::CreateView(view) => {
 4579                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4580                let should_add_view = this.update(cx, |this, _| {
 4581                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4582                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4583                    } else {
 4584                        anyhow::Ok(false)
 4585                    }
 4586                })??;
 4587
 4588                if should_add_view {
 4589                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4590                }
 4591            }
 4592            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4593                let should_add_view = this.update(cx, |this, _| {
 4594                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4595                        state.active_view_id = update_active_view
 4596                            .view
 4597                            .as_ref()
 4598                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4599
 4600                        if state.active_view_id.is_some_and(|view_id| {
 4601                            !state.items_by_leader_view_id.contains_key(&view_id)
 4602                        }) {
 4603                            anyhow::Ok(true)
 4604                        } else {
 4605                            anyhow::Ok(false)
 4606                        }
 4607                    } else {
 4608                        anyhow::Ok(false)
 4609                    }
 4610                })??;
 4611
 4612                if should_add_view && let Some(view) = update_active_view.view {
 4613                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4614                }
 4615            }
 4616            proto::update_followers::Variant::UpdateView(update_view) => {
 4617                let variant = update_view.variant.context("missing update view variant")?;
 4618                let id = update_view.id.context("missing update view id")?;
 4619                let mut tasks = Vec::new();
 4620                this.update_in(cx, |this, window, cx| {
 4621                    let project = this.project.clone();
 4622                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4623                        let view_id = ViewId::from_proto(id.clone())?;
 4624                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4625                            tasks.push(item.view.apply_update_proto(
 4626                                &project,
 4627                                variant.clone(),
 4628                                window,
 4629                                cx,
 4630                            ));
 4631                        }
 4632                    }
 4633                    anyhow::Ok(())
 4634                })??;
 4635                try_join_all(tasks).await.log_err();
 4636            }
 4637        }
 4638        this.update_in(cx, |this, window, cx| {
 4639            this.leader_updated(leader_id, window, cx)
 4640        })?;
 4641        Ok(())
 4642    }
 4643
 4644    async fn add_view_from_leader(
 4645        this: WeakEntity<Self>,
 4646        leader_id: PeerId,
 4647        view: &proto::View,
 4648        cx: &mut AsyncWindowContext,
 4649    ) -> Result<()> {
 4650        let this = this.upgrade().context("workspace dropped")?;
 4651
 4652        let Some(id) = view.id.clone() else {
 4653            anyhow::bail!("no id for view");
 4654        };
 4655        let id = ViewId::from_proto(id)?;
 4656        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4657
 4658        let pane = this.update(cx, |this, _cx| {
 4659            let state = this
 4660                .follower_states
 4661                .get(&leader_id.into())
 4662                .context("stopped following")?;
 4663            anyhow::Ok(state.pane().clone())
 4664        })??;
 4665        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4666            let client = this.read(cx).client().clone();
 4667            pane.items().find_map(|item| {
 4668                let item = item.to_followable_item_handle(cx)?;
 4669                if item.remote_id(&client, window, cx) == Some(id) {
 4670                    Some(item)
 4671                } else {
 4672                    None
 4673                }
 4674            })
 4675        })?;
 4676        let item = if let Some(existing_item) = existing_item {
 4677            existing_item
 4678        } else {
 4679            let variant = view.variant.clone();
 4680            anyhow::ensure!(variant.is_some(), "missing view variant");
 4681
 4682            let task = cx.update(|window, cx| {
 4683                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4684            })?;
 4685
 4686            let Some(task) = task else {
 4687                anyhow::bail!(
 4688                    "failed to construct view from leader (maybe from a different version of zed?)"
 4689                );
 4690            };
 4691
 4692            let mut new_item = task.await?;
 4693            pane.update_in(cx, |pane, window, cx| {
 4694                let mut item_to_remove = None;
 4695                for (ix, item) in pane.items().enumerate() {
 4696                    if let Some(item) = item.to_followable_item_handle(cx) {
 4697                        match new_item.dedup(item.as_ref(), window, cx) {
 4698                            Some(item::Dedup::KeepExisting) => {
 4699                                new_item =
 4700                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4701                                break;
 4702                            }
 4703                            Some(item::Dedup::ReplaceExisting) => {
 4704                                item_to_remove = Some((ix, item.item_id()));
 4705                                break;
 4706                            }
 4707                            None => {}
 4708                        }
 4709                    }
 4710                }
 4711
 4712                if let Some((ix, id)) = item_to_remove {
 4713                    pane.remove_item(id, false, false, window, cx);
 4714                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4715                }
 4716            })?;
 4717
 4718            new_item
 4719        };
 4720
 4721        this.update_in(cx, |this, window, cx| {
 4722            let state = this.follower_states.get_mut(&leader_id.into())?;
 4723            item.set_leader_id(Some(leader_id.into()), window, cx);
 4724            state.items_by_leader_view_id.insert(
 4725                id,
 4726                FollowerView {
 4727                    view: item,
 4728                    location: panel_id,
 4729                },
 4730            );
 4731
 4732            Some(())
 4733        })?;
 4734
 4735        Ok(())
 4736    }
 4737
 4738    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4739        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4740            return;
 4741        };
 4742
 4743        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4744            let buffer_entity_id = agent_location.buffer.entity_id();
 4745            let view_id = ViewId {
 4746                creator: CollaboratorId::Agent,
 4747                id: buffer_entity_id.as_u64(),
 4748            };
 4749            follower_state.active_view_id = Some(view_id);
 4750
 4751            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4752                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4753                hash_map::Entry::Vacant(entry) => {
 4754                    let existing_view =
 4755                        follower_state
 4756                            .center_pane
 4757                            .read(cx)
 4758                            .items()
 4759                            .find_map(|item| {
 4760                                let item = item.to_followable_item_handle(cx)?;
 4761                                if item.is_singleton(cx)
 4762                                    && item.project_item_model_ids(cx).as_slice()
 4763                                        == [buffer_entity_id]
 4764                                {
 4765                                    Some(item)
 4766                                } else {
 4767                                    None
 4768                                }
 4769                            });
 4770                    let view = existing_view.or_else(|| {
 4771                        agent_location.buffer.upgrade().and_then(|buffer| {
 4772                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4773                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4774                            })?
 4775                            .to_followable_item_handle(cx)
 4776                        })
 4777                    });
 4778
 4779                    view.map(|view| {
 4780                        entry.insert(FollowerView {
 4781                            view,
 4782                            location: None,
 4783                        })
 4784                    })
 4785                }
 4786            };
 4787
 4788            if let Some(item) = item {
 4789                item.view
 4790                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4791                item.view
 4792                    .update_agent_location(agent_location.position, window, cx);
 4793            }
 4794        } else {
 4795            follower_state.active_view_id = None;
 4796        }
 4797
 4798        self.leader_updated(CollaboratorId::Agent, window, cx);
 4799    }
 4800
 4801    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4802        let mut is_project_item = true;
 4803        let mut update = proto::UpdateActiveView::default();
 4804        if window.is_window_active() {
 4805            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4806
 4807            if let Some(item) = active_item
 4808                && item.item_focus_handle(cx).contains_focused(window, cx)
 4809            {
 4810                let leader_id = self
 4811                    .pane_for(&*item)
 4812                    .and_then(|pane| self.leader_for_pane(&pane));
 4813                let leader_peer_id = match leader_id {
 4814                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4815                    Some(CollaboratorId::Agent) | None => None,
 4816                };
 4817
 4818                if let Some(item) = item.to_followable_item_handle(cx) {
 4819                    let id = item
 4820                        .remote_id(&self.app_state.client, window, cx)
 4821                        .map(|id| id.to_proto());
 4822
 4823                    if let Some(id) = id
 4824                        && let Some(variant) = item.to_state_proto(window, cx)
 4825                    {
 4826                        let view = Some(proto::View {
 4827                            id: id.clone(),
 4828                            leader_id: leader_peer_id,
 4829                            variant: Some(variant),
 4830                            panel_id: panel_id.map(|id| id as i32),
 4831                        });
 4832
 4833                        is_project_item = item.is_project_item(window, cx);
 4834                        update = proto::UpdateActiveView {
 4835                            view,
 4836                            // TODO: Remove after version 0.145.x stabilizes.
 4837                            id,
 4838                            leader_id: leader_peer_id,
 4839                        };
 4840                    };
 4841                }
 4842            }
 4843        }
 4844
 4845        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4846        if active_view_id != self.last_active_view_id.as_ref() {
 4847            self.last_active_view_id = active_view_id.cloned();
 4848            self.update_followers(
 4849                is_project_item,
 4850                proto::update_followers::Variant::UpdateActiveView(update),
 4851                window,
 4852                cx,
 4853            );
 4854        }
 4855    }
 4856
 4857    fn active_item_for_followers(
 4858        &self,
 4859        window: &mut Window,
 4860        cx: &mut App,
 4861    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4862        let mut active_item = None;
 4863        let mut panel_id = None;
 4864        for dock in self.all_docks() {
 4865            if dock.focus_handle(cx).contains_focused(window, cx)
 4866                && let Some(panel) = dock.read(cx).active_panel()
 4867                && let Some(pane) = panel.pane(cx)
 4868                && let Some(item) = pane.read(cx).active_item()
 4869            {
 4870                active_item = Some(item);
 4871                panel_id = panel.remote_id();
 4872                break;
 4873            }
 4874        }
 4875
 4876        if active_item.is_none() {
 4877            active_item = self.active_pane().read(cx).active_item();
 4878        }
 4879        (active_item, panel_id)
 4880    }
 4881
 4882    fn update_followers(
 4883        &self,
 4884        project_only: bool,
 4885        update: proto::update_followers::Variant,
 4886        _: &mut Window,
 4887        cx: &mut App,
 4888    ) -> Option<()> {
 4889        // If this update only applies to for followers in the current project,
 4890        // then skip it unless this project is shared. If it applies to all
 4891        // followers, regardless of project, then set `project_id` to none,
 4892        // indicating that it goes to all followers.
 4893        let project_id = if project_only {
 4894            Some(self.project.read(cx).remote_id()?)
 4895        } else {
 4896            None
 4897        };
 4898        self.app_state().workspace_store.update(cx, |store, cx| {
 4899            store.update_followers(project_id, update, cx)
 4900        })
 4901    }
 4902
 4903    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4904        self.follower_states.iter().find_map(|(leader_id, state)| {
 4905            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4906                Some(*leader_id)
 4907            } else {
 4908                None
 4909            }
 4910        })
 4911    }
 4912
 4913    fn leader_updated(
 4914        &mut self,
 4915        leader_id: impl Into<CollaboratorId>,
 4916        window: &mut Window,
 4917        cx: &mut Context<Self>,
 4918    ) -> Option<Box<dyn ItemHandle>> {
 4919        cx.notify();
 4920
 4921        let leader_id = leader_id.into();
 4922        let (panel_id, item) = match leader_id {
 4923            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4924            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4925        };
 4926
 4927        let state = self.follower_states.get(&leader_id)?;
 4928        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4929        let pane;
 4930        if let Some(panel_id) = panel_id {
 4931            pane = self
 4932                .activate_panel_for_proto_id(panel_id, window, cx)?
 4933                .pane(cx)?;
 4934            let state = self.follower_states.get_mut(&leader_id)?;
 4935            state.dock_pane = Some(pane.clone());
 4936        } else {
 4937            pane = state.center_pane.clone();
 4938            let state = self.follower_states.get_mut(&leader_id)?;
 4939            if let Some(dock_pane) = state.dock_pane.take() {
 4940                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4941            }
 4942        }
 4943
 4944        pane.update(cx, |pane, cx| {
 4945            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4946            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4947                pane.activate_item(index, false, false, window, cx);
 4948            } else {
 4949                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4950            }
 4951
 4952            if focus_active_item {
 4953                pane.focus_active_item(window, cx)
 4954            }
 4955        });
 4956
 4957        Some(item)
 4958    }
 4959
 4960    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4961        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4962        let active_view_id = state.active_view_id?;
 4963        Some(
 4964            state
 4965                .items_by_leader_view_id
 4966                .get(&active_view_id)?
 4967                .view
 4968                .boxed_clone(),
 4969        )
 4970    }
 4971
 4972    fn active_item_for_peer(
 4973        &self,
 4974        peer_id: PeerId,
 4975        window: &mut Window,
 4976        cx: &mut Context<Self>,
 4977    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4978        let call = self.active_call()?;
 4979        let room = call.read(cx).room()?.read(cx);
 4980        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4981        let leader_in_this_app;
 4982        let leader_in_this_project;
 4983        match participant.location {
 4984            call::ParticipantLocation::SharedProject { project_id } => {
 4985                leader_in_this_app = true;
 4986                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4987            }
 4988            call::ParticipantLocation::UnsharedProject => {
 4989                leader_in_this_app = true;
 4990                leader_in_this_project = false;
 4991            }
 4992            call::ParticipantLocation::External => {
 4993                leader_in_this_app = false;
 4994                leader_in_this_project = false;
 4995            }
 4996        };
 4997        let state = self.follower_states.get(&peer_id.into())?;
 4998        let mut item_to_activate = None;
 4999        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5000            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5001                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5002            {
 5003                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5004            }
 5005        } else if let Some(shared_screen) =
 5006            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5007        {
 5008            item_to_activate = Some((None, Box::new(shared_screen)));
 5009        }
 5010        item_to_activate
 5011    }
 5012
 5013    fn shared_screen_for_peer(
 5014        &self,
 5015        peer_id: PeerId,
 5016        pane: &Entity<Pane>,
 5017        window: &mut Window,
 5018        cx: &mut App,
 5019    ) -> Option<Entity<SharedScreen>> {
 5020        let call = self.active_call()?;
 5021        let room = call.read(cx).room()?.clone();
 5022        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5023        let track = participant.video_tracks.values().next()?.clone();
 5024        let user = participant.user.clone();
 5025
 5026        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5027            if item.read(cx).peer_id == peer_id {
 5028                return Some(item);
 5029            }
 5030        }
 5031
 5032        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5033    }
 5034
 5035    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5036        if window.is_window_active() {
 5037            self.update_active_view_for_followers(window, cx);
 5038
 5039            if let Some(database_id) = self.database_id {
 5040                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5041                    .detach();
 5042            }
 5043        } else {
 5044            for pane in &self.panes {
 5045                pane.update(cx, |pane, cx| {
 5046                    if let Some(item) = pane.active_item() {
 5047                        item.workspace_deactivated(window, cx);
 5048                    }
 5049                    for item in pane.items() {
 5050                        if matches!(
 5051                            item.workspace_settings(cx).autosave,
 5052                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5053                        ) {
 5054                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5055                                .detach_and_log_err(cx);
 5056                        }
 5057                    }
 5058                });
 5059            }
 5060        }
 5061    }
 5062
 5063    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5064        self.active_call.as_ref().map(|(call, _)| call)
 5065    }
 5066
 5067    fn on_active_call_event(
 5068        &mut self,
 5069        _: &Entity<ActiveCall>,
 5070        event: &call::room::Event,
 5071        window: &mut Window,
 5072        cx: &mut Context<Self>,
 5073    ) {
 5074        match event {
 5075            call::room::Event::ParticipantLocationChanged { participant_id }
 5076            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5077                self.leader_updated(participant_id, window, cx);
 5078            }
 5079            _ => {}
 5080        }
 5081    }
 5082
 5083    pub fn database_id(&self) -> Option<WorkspaceId> {
 5084        self.database_id
 5085    }
 5086
 5087    pub fn session_id(&self) -> Option<String> {
 5088        self.session_id.clone()
 5089    }
 5090
 5091    fn local_paths(&self, cx: &App) -> Option<Vec<Arc<Path>>> {
 5092        let project = self.project().read(cx);
 5093
 5094        if project.is_local() {
 5095            Some(
 5096                project
 5097                    .visible_worktrees(cx)
 5098                    .map(|worktree| worktree.read(cx).abs_path())
 5099                    .collect::<Vec<_>>(),
 5100            )
 5101        } else {
 5102            None
 5103        }
 5104    }
 5105
 5106    fn update_ssh_paths(&mut self, cx: &App) {
 5107        let project = self.project().read(cx);
 5108        if !project.is_local() {
 5109            let paths: Vec<String> = project
 5110                .visible_worktrees(cx)
 5111                .map(|worktree| worktree.read(cx).abs_path().to_string_lossy().to_string())
 5112                .collect();
 5113            if let Some(ssh_project) = &mut self.serialized_ssh_project {
 5114                ssh_project.paths = paths;
 5115            }
 5116        }
 5117    }
 5118
 5119    fn serialize_ssh_paths(&mut self, window: &mut Window, cx: &mut Context<Workspace>) {
 5120        if self._schedule_serialize_ssh_paths.is_none() {
 5121            self._schedule_serialize_ssh_paths =
 5122                Some(cx.spawn_in(window, async move |this, cx| {
 5123                    cx.background_executor()
 5124                        .timer(SERIALIZATION_THROTTLE_TIME)
 5125                        .await;
 5126                    this.update_in(cx, |this, window, cx| {
 5127                        let task = if let Some(ssh_project) = &this.serialized_ssh_project {
 5128                            let ssh_project_id = ssh_project.id;
 5129                            let ssh_project_paths = ssh_project.paths.clone();
 5130                            window.spawn(cx, async move |_| {
 5131                                persistence::DB
 5132                                    .update_ssh_project_paths(ssh_project_id, ssh_project_paths)
 5133                                    .await
 5134                            })
 5135                        } else {
 5136                            Task::ready(Err(anyhow::anyhow!("No SSH project to serialize")))
 5137                        };
 5138                        task.detach();
 5139                        this._schedule_serialize_ssh_paths.take();
 5140                    })
 5141                    .log_err();
 5142                }));
 5143        }
 5144    }
 5145
 5146    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5147        match member {
 5148            Member::Axis(PaneAxis { members, .. }) => {
 5149                for child in members.iter() {
 5150                    self.remove_panes(child.clone(), window, cx)
 5151                }
 5152            }
 5153            Member::Pane(pane) => {
 5154                self.force_remove_pane(&pane, &None, window, cx);
 5155            }
 5156        }
 5157    }
 5158
 5159    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5160        self.session_id.take();
 5161        self.serialize_workspace_internal(window, cx)
 5162    }
 5163
 5164    fn force_remove_pane(
 5165        &mut self,
 5166        pane: &Entity<Pane>,
 5167        focus_on: &Option<Entity<Pane>>,
 5168        window: &mut Window,
 5169        cx: &mut Context<Workspace>,
 5170    ) {
 5171        self.panes.retain(|p| p != pane);
 5172        if let Some(focus_on) = focus_on {
 5173            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5174        } else if self.active_pane() == pane {
 5175            self.panes
 5176                .last()
 5177                .unwrap()
 5178                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5179        }
 5180        if self.last_active_center_pane == Some(pane.downgrade()) {
 5181            self.last_active_center_pane = None;
 5182        }
 5183        cx.notify();
 5184    }
 5185
 5186    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5187        if self._schedule_serialize_workspace.is_none() {
 5188            self._schedule_serialize_workspace =
 5189                Some(cx.spawn_in(window, async move |this, cx| {
 5190                    cx.background_executor()
 5191                        .timer(SERIALIZATION_THROTTLE_TIME)
 5192                        .await;
 5193                    this.update_in(cx, |this, window, cx| {
 5194                        this.serialize_workspace_internal(window, cx).detach();
 5195                        this._schedule_serialize_workspace.take();
 5196                    })
 5197                    .log_err();
 5198                }));
 5199        }
 5200    }
 5201
 5202    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5203        let Some(database_id) = self.database_id() else {
 5204            return Task::ready(());
 5205        };
 5206
 5207        fn serialize_pane_handle(
 5208            pane_handle: &Entity<Pane>,
 5209            window: &mut Window,
 5210            cx: &mut App,
 5211        ) -> SerializedPane {
 5212            let (items, active, pinned_count) = {
 5213                let pane = pane_handle.read(cx);
 5214                let active_item_id = pane.active_item().map(|item| item.item_id());
 5215                (
 5216                    pane.items()
 5217                        .filter_map(|handle| {
 5218                            let handle = handle.to_serializable_item_handle(cx)?;
 5219
 5220                            Some(SerializedItem {
 5221                                kind: Arc::from(handle.serialized_item_kind()),
 5222                                item_id: handle.item_id().as_u64(),
 5223                                active: Some(handle.item_id()) == active_item_id,
 5224                                preview: pane.is_active_preview_item(handle.item_id()),
 5225                            })
 5226                        })
 5227                        .collect::<Vec<_>>(),
 5228                    pane.has_focus(window, cx),
 5229                    pane.pinned_count(),
 5230                )
 5231            };
 5232
 5233            SerializedPane::new(items, active, pinned_count)
 5234        }
 5235
 5236        fn build_serialized_pane_group(
 5237            pane_group: &Member,
 5238            window: &mut Window,
 5239            cx: &mut App,
 5240        ) -> SerializedPaneGroup {
 5241            match pane_group {
 5242                Member::Axis(PaneAxis {
 5243                    axis,
 5244                    members,
 5245                    flexes,
 5246                    bounding_boxes: _,
 5247                }) => SerializedPaneGroup::Group {
 5248                    axis: SerializedAxis(*axis),
 5249                    children: members
 5250                        .iter()
 5251                        .map(|member| build_serialized_pane_group(member, window, cx))
 5252                        .collect::<Vec<_>>(),
 5253                    flexes: Some(flexes.lock().clone()),
 5254                },
 5255                Member::Pane(pane_handle) => {
 5256                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5257                }
 5258            }
 5259        }
 5260
 5261        fn build_serialized_docks(
 5262            this: &Workspace,
 5263            window: &mut Window,
 5264            cx: &mut App,
 5265        ) -> DockStructure {
 5266            let left_dock = this.left_dock.read(cx);
 5267            let left_visible = left_dock.is_open();
 5268            let left_active_panel = left_dock
 5269                .active_panel()
 5270                .map(|panel| panel.persistent_name().to_string());
 5271            let left_dock_zoom = left_dock
 5272                .active_panel()
 5273                .map(|panel| panel.is_zoomed(window, cx))
 5274                .unwrap_or(false);
 5275
 5276            let right_dock = this.right_dock.read(cx);
 5277            let right_visible = right_dock.is_open();
 5278            let right_active_panel = right_dock
 5279                .active_panel()
 5280                .map(|panel| panel.persistent_name().to_string());
 5281            let right_dock_zoom = right_dock
 5282                .active_panel()
 5283                .map(|panel| panel.is_zoomed(window, cx))
 5284                .unwrap_or(false);
 5285
 5286            let bottom_dock = this.bottom_dock.read(cx);
 5287            let bottom_visible = bottom_dock.is_open();
 5288            let bottom_active_panel = bottom_dock
 5289                .active_panel()
 5290                .map(|panel| panel.persistent_name().to_string());
 5291            let bottom_dock_zoom = bottom_dock
 5292                .active_panel()
 5293                .map(|panel| panel.is_zoomed(window, cx))
 5294                .unwrap_or(false);
 5295
 5296            DockStructure {
 5297                left: DockData {
 5298                    visible: left_visible,
 5299                    active_panel: left_active_panel,
 5300                    zoom: left_dock_zoom,
 5301                },
 5302                right: DockData {
 5303                    visible: right_visible,
 5304                    active_panel: right_active_panel,
 5305                    zoom: right_dock_zoom,
 5306                },
 5307                bottom: DockData {
 5308                    visible: bottom_visible,
 5309                    active_panel: bottom_active_panel,
 5310                    zoom: bottom_dock_zoom,
 5311                },
 5312            }
 5313        }
 5314
 5315        match self.serialize_workspace_location(cx) {
 5316            WorkspaceLocation::Location(location) => {
 5317                let breakpoints = self.project.update(cx, |project, cx| {
 5318                    project
 5319                        .breakpoint_store()
 5320                        .read(cx)
 5321                        .all_source_breakpoints(cx)
 5322                });
 5323
 5324                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5325                let docks = build_serialized_docks(self, window, cx);
 5326                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5327                let serialized_workspace = SerializedWorkspace {
 5328                    id: database_id,
 5329                    location,
 5330                    center_group,
 5331                    window_bounds,
 5332                    display: Default::default(),
 5333                    docks,
 5334                    centered_layout: self.centered_layout,
 5335                    session_id: self.session_id.clone(),
 5336                    breakpoints,
 5337                    window_id: Some(window.window_handle().window_id().as_u64()),
 5338                };
 5339
 5340                window.spawn(cx, async move |_| {
 5341                    persistence::DB.save_workspace(serialized_workspace).await;
 5342                })
 5343            }
 5344            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5345                persistence::DB
 5346                    .set_session_id(database_id, None)
 5347                    .await
 5348                    .log_err();
 5349            }),
 5350            WorkspaceLocation::None => Task::ready(()),
 5351        }
 5352    }
 5353
 5354    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5355        if let Some(ssh_project) = &self.serialized_ssh_project {
 5356            WorkspaceLocation::Location(SerializedWorkspaceLocation::Ssh(ssh_project.clone()))
 5357        } else if let Some(local_paths) = self.local_paths(cx) {
 5358            if !local_paths.is_empty() {
 5359                WorkspaceLocation::Location(SerializedWorkspaceLocation::from_local_paths(
 5360                    local_paths,
 5361                ))
 5362            } else {
 5363                WorkspaceLocation::DetachFromSession
 5364            }
 5365        } else {
 5366            WorkspaceLocation::None
 5367        }
 5368    }
 5369
 5370    fn update_history(&self, cx: &mut App) {
 5371        let Some(id) = self.database_id() else {
 5372            return;
 5373        };
 5374        let location = match self.serialize_workspace_location(cx) {
 5375            WorkspaceLocation::Location(location) => location,
 5376            _ => return,
 5377        };
 5378        if let Some(manager) = HistoryManager::global(cx) {
 5379            manager.update(cx, |this, cx| {
 5380                this.update_history(id, HistoryManagerEntry::new(id, &location), cx);
 5381            });
 5382        }
 5383    }
 5384
 5385    async fn serialize_items(
 5386        this: &WeakEntity<Self>,
 5387        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5388        cx: &mut AsyncWindowContext,
 5389    ) -> Result<()> {
 5390        const CHUNK_SIZE: usize = 200;
 5391
 5392        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5393
 5394        while let Some(items_received) = serializable_items.next().await {
 5395            let unique_items =
 5396                items_received
 5397                    .into_iter()
 5398                    .fold(HashMap::default(), |mut acc, item| {
 5399                        acc.entry(item.item_id()).or_insert(item);
 5400                        acc
 5401                    });
 5402
 5403            // We use into_iter() here so that the references to the items are moved into
 5404            // the tasks and not kept alive while we're sleeping.
 5405            for (_, item) in unique_items.into_iter() {
 5406                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5407                    item.serialize(workspace, false, window, cx)
 5408                }) {
 5409                    cx.background_spawn(async move { task.await.log_err() })
 5410                        .detach();
 5411                }
 5412            }
 5413
 5414            cx.background_executor()
 5415                .timer(SERIALIZATION_THROTTLE_TIME)
 5416                .await;
 5417        }
 5418
 5419        Ok(())
 5420    }
 5421
 5422    pub(crate) fn enqueue_item_serialization(
 5423        &mut self,
 5424        item: Box<dyn SerializableItemHandle>,
 5425    ) -> Result<()> {
 5426        self.serializable_items_tx
 5427            .unbounded_send(item)
 5428            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5429    }
 5430
 5431    pub(crate) fn load_workspace(
 5432        serialized_workspace: SerializedWorkspace,
 5433        paths_to_open: Vec<Option<ProjectPath>>,
 5434        window: &mut Window,
 5435        cx: &mut Context<Workspace>,
 5436    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5437        cx.spawn_in(window, async move |workspace, cx| {
 5438            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5439
 5440            let mut center_group = None;
 5441            let mut center_items = None;
 5442
 5443            // Traverse the splits tree and add to things
 5444            if let Some((group, active_pane, items)) = serialized_workspace
 5445                .center_group
 5446                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5447                .await
 5448            {
 5449                center_items = Some(items);
 5450                center_group = Some((group, active_pane))
 5451            }
 5452
 5453            let mut items_by_project_path = HashMap::default();
 5454            let mut item_ids_by_kind = HashMap::default();
 5455            let mut all_deserialized_items = Vec::default();
 5456            cx.update(|_, cx| {
 5457                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5458                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5459                        item_ids_by_kind
 5460                            .entry(serializable_item_handle.serialized_item_kind())
 5461                            .or_insert(Vec::new())
 5462                            .push(item.item_id().as_u64() as ItemId);
 5463                    }
 5464
 5465                    if let Some(project_path) = item.project_path(cx) {
 5466                        items_by_project_path.insert(project_path, item.clone());
 5467                    }
 5468                    all_deserialized_items.push(item);
 5469                }
 5470            })?;
 5471
 5472            let opened_items = paths_to_open
 5473                .into_iter()
 5474                .map(|path_to_open| {
 5475                    path_to_open
 5476                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5477                })
 5478                .collect::<Vec<_>>();
 5479
 5480            // Remove old panes from workspace panes list
 5481            workspace.update_in(cx, |workspace, window, cx| {
 5482                if let Some((center_group, active_pane)) = center_group {
 5483                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5484
 5485                    // Swap workspace center group
 5486                    workspace.center = PaneGroup::with_root(center_group);
 5487                    if let Some(active_pane) = active_pane {
 5488                        workspace.set_active_pane(&active_pane, window, cx);
 5489                        cx.focus_self(window);
 5490                    } else {
 5491                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5492                    }
 5493                }
 5494
 5495                let docks = serialized_workspace.docks;
 5496
 5497                for (dock, serialized_dock) in [
 5498                    (&mut workspace.right_dock, docks.right),
 5499                    (&mut workspace.left_dock, docks.left),
 5500                    (&mut workspace.bottom_dock, docks.bottom),
 5501                ]
 5502                .iter_mut()
 5503                {
 5504                    dock.update(cx, |dock, cx| {
 5505                        dock.serialized_dock = Some(serialized_dock.clone());
 5506                        dock.restore_state(window, cx);
 5507                    });
 5508                }
 5509
 5510                cx.notify();
 5511            })?;
 5512
 5513            let _ = project
 5514                .update(cx, |project, cx| {
 5515                    project
 5516                        .breakpoint_store()
 5517                        .update(cx, |breakpoint_store, cx| {
 5518                            breakpoint_store
 5519                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5520                        })
 5521                })?
 5522                .await;
 5523
 5524            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5525            // after loading the items, we might have different items and in order to avoid
 5526            // the database filling up, we delete items that haven't been loaded now.
 5527            //
 5528            // The items that have been loaded, have been saved after they've been added to the workspace.
 5529            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5530                item_ids_by_kind
 5531                    .into_iter()
 5532                    .map(|(item_kind, loaded_items)| {
 5533                        SerializableItemRegistry::cleanup(
 5534                            item_kind,
 5535                            serialized_workspace.id,
 5536                            loaded_items,
 5537                            window,
 5538                            cx,
 5539                        )
 5540                        .log_err()
 5541                    })
 5542                    .collect::<Vec<_>>()
 5543            })?;
 5544
 5545            futures::future::join_all(clean_up_tasks).await;
 5546
 5547            workspace
 5548                .update_in(cx, |workspace, window, cx| {
 5549                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5550                    workspace.serialize_workspace_internal(window, cx).detach();
 5551
 5552                    // Ensure that we mark the window as edited if we did load dirty items
 5553                    workspace.update_window_edited(window, cx);
 5554                })
 5555                .ok();
 5556
 5557            Ok(opened_items)
 5558        })
 5559    }
 5560
 5561    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5562        self.add_workspace_actions_listeners(div, window, cx)
 5563            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5564            .on_action(cx.listener(Self::close_all_items_and_panes))
 5565            .on_action(cx.listener(Self::save_all))
 5566            .on_action(cx.listener(Self::send_keystrokes))
 5567            .on_action(cx.listener(Self::add_folder_to_project))
 5568            .on_action(cx.listener(Self::follow_next_collaborator))
 5569            .on_action(cx.listener(Self::close_window))
 5570            .on_action(cx.listener(Self::activate_pane_at_index))
 5571            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5572            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5573            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5574            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5575                let pane = workspace.active_pane().clone();
 5576                workspace.unfollow_in_pane(&pane, window, cx);
 5577            }))
 5578            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5579                workspace
 5580                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5581                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5582            }))
 5583            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5584                workspace
 5585                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5586                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5587            }))
 5588            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5589                workspace
 5590                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5591                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5592            }))
 5593            .on_action(
 5594                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5595                    workspace.activate_previous_pane(window, cx)
 5596                }),
 5597            )
 5598            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5599                workspace.activate_next_pane(window, cx)
 5600            }))
 5601            .on_action(
 5602                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5603                    workspace.activate_next_window(cx)
 5604                }),
 5605            )
 5606            .on_action(
 5607                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5608                    workspace.activate_previous_window(cx)
 5609                }),
 5610            )
 5611            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5612                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5613            }))
 5614            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5615                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5616            }))
 5617            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5618                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5619            }))
 5620            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5621                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5622            }))
 5623            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5624                workspace.activate_next_pane(window, cx)
 5625            }))
 5626            .on_action(cx.listener(
 5627                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5628                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5629                },
 5630            ))
 5631            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5632                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5633            }))
 5634            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5635                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5636            }))
 5637            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5638                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5639            }))
 5640            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5641                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5642            }))
 5643            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5644                this.toggle_dock(DockPosition::Left, window, cx);
 5645            }))
 5646            .on_action(cx.listener(
 5647                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5648                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5649                },
 5650            ))
 5651            .on_action(cx.listener(
 5652                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5653                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5654                },
 5655            ))
 5656            .on_action(cx.listener(
 5657                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5658                    if !workspace.close_active_dock(window, cx) {
 5659                        cx.propagate();
 5660                    }
 5661                },
 5662            ))
 5663            .on_action(
 5664                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5665                    workspace.close_all_docks(window, cx);
 5666                }),
 5667            )
 5668            .on_action(cx.listener(
 5669                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5670                    workspace.clear_all_notifications(cx);
 5671                },
 5672            ))
 5673            .on_action(cx.listener(
 5674                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5675                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5676                        workspace.suppress_notification(&notification_id, cx);
 5677                    }
 5678                },
 5679            ))
 5680            .on_action(cx.listener(
 5681                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5682                    workspace.reopen_closed_item(window, cx).detach();
 5683                },
 5684            ))
 5685            .on_action(cx.listener(
 5686                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5687                    for dock in workspace.all_docks() {
 5688                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5689                            let Some(panel) = dock.read(cx).active_panel() else {
 5690                                return;
 5691                            };
 5692
 5693                            // Set to `None`, then the size will fall back to the default.
 5694                            panel.clone().set_size(None, window, cx);
 5695
 5696                            return;
 5697                        }
 5698                    }
 5699                },
 5700            ))
 5701            .on_action(cx.listener(
 5702                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5703                    for dock in workspace.all_docks() {
 5704                        if let Some(panel) = dock.read(cx).visible_panel() {
 5705                            // Set to `None`, then the size will fall back to the default.
 5706                            panel.clone().set_size(None, window, cx);
 5707                        }
 5708                    }
 5709                },
 5710            ))
 5711            .on_action(cx.listener(
 5712                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5713                    adjust_active_dock_size_by_px(
 5714                        px_with_ui_font_fallback(act.px, cx),
 5715                        workspace,
 5716                        window,
 5717                        cx,
 5718                    );
 5719                },
 5720            ))
 5721            .on_action(cx.listener(
 5722                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5723                    adjust_active_dock_size_by_px(
 5724                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5725                        workspace,
 5726                        window,
 5727                        cx,
 5728                    );
 5729                },
 5730            ))
 5731            .on_action(cx.listener(
 5732                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5733                    adjust_open_docks_size_by_px(
 5734                        px_with_ui_font_fallback(act.px, cx),
 5735                        workspace,
 5736                        window,
 5737                        cx,
 5738                    );
 5739                },
 5740            ))
 5741            .on_action(cx.listener(
 5742                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5743                    adjust_open_docks_size_by_px(
 5744                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5745                        workspace,
 5746                        window,
 5747                        cx,
 5748                    );
 5749                },
 5750            ))
 5751            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5752            .on_action(cx.listener(Workspace::cancel))
 5753    }
 5754
 5755    #[cfg(any(test, feature = "test-support"))]
 5756    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5757        use node_runtime::NodeRuntime;
 5758        use session::Session;
 5759
 5760        let client = project.read(cx).client();
 5761        let user_store = project.read(cx).user_store();
 5762        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5763        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5764        window.activate_window();
 5765        let app_state = Arc::new(AppState {
 5766            languages: project.read(cx).languages().clone(),
 5767            workspace_store,
 5768            client,
 5769            user_store,
 5770            fs: project.read(cx).fs().clone(),
 5771            build_window_options: |_, _| Default::default(),
 5772            node_runtime: NodeRuntime::unavailable(),
 5773            session,
 5774        });
 5775        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5776        workspace
 5777            .active_pane
 5778            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5779        workspace
 5780    }
 5781
 5782    pub fn register_action<A: Action>(
 5783        &mut self,
 5784        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5785    ) -> &mut Self {
 5786        let callback = Arc::new(callback);
 5787
 5788        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5789            let callback = callback.clone();
 5790            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5791                (callback)(workspace, event, window, cx)
 5792            }))
 5793        }));
 5794        self
 5795    }
 5796    pub fn register_action_renderer(
 5797        &mut self,
 5798        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5799    ) -> &mut Self {
 5800        self.workspace_actions.push(Box::new(callback));
 5801        self
 5802    }
 5803
 5804    fn add_workspace_actions_listeners(
 5805        &self,
 5806        mut div: Div,
 5807        window: &mut Window,
 5808        cx: &mut Context<Self>,
 5809    ) -> Div {
 5810        for action in self.workspace_actions.iter() {
 5811            div = (action)(div, self, window, cx)
 5812        }
 5813        div
 5814    }
 5815
 5816    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5817        self.modal_layer.read(cx).has_active_modal()
 5818    }
 5819
 5820    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5821        self.modal_layer.read(cx).active_modal()
 5822    }
 5823
 5824    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5825    where
 5826        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5827    {
 5828        self.modal_layer.update(cx, |modal_layer, cx| {
 5829            modal_layer.toggle_modal(window, cx, build)
 5830        })
 5831    }
 5832
 5833    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5834        self.toast_layer
 5835            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5836    }
 5837
 5838    pub fn toggle_centered_layout(
 5839        &mut self,
 5840        _: &ToggleCenteredLayout,
 5841        _: &mut Window,
 5842        cx: &mut Context<Self>,
 5843    ) {
 5844        self.centered_layout = !self.centered_layout;
 5845        if let Some(database_id) = self.database_id() {
 5846            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5847                .detach_and_log_err(cx);
 5848        }
 5849        cx.notify();
 5850    }
 5851
 5852    fn adjust_padding(padding: Option<f32>) -> f32 {
 5853        padding
 5854            .unwrap_or(Self::DEFAULT_PADDING)
 5855            .clamp(0.0, Self::MAX_PADDING)
 5856    }
 5857
 5858    fn render_dock(
 5859        &self,
 5860        position: DockPosition,
 5861        dock: &Entity<Dock>,
 5862        window: &mut Window,
 5863        cx: &mut App,
 5864    ) -> Option<Div> {
 5865        if self.zoomed_position == Some(position) {
 5866            return None;
 5867        }
 5868
 5869        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5870            let pane = panel.pane(cx)?;
 5871            let follower_states = &self.follower_states;
 5872            leader_border_for_pane(follower_states, &pane, window, cx)
 5873        });
 5874
 5875        Some(
 5876            div()
 5877                .flex()
 5878                .flex_none()
 5879                .overflow_hidden()
 5880                .child(dock.clone())
 5881                .children(leader_border),
 5882        )
 5883    }
 5884
 5885    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5886        window.root().flatten()
 5887    }
 5888
 5889    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5890        self.zoomed.as_ref()
 5891    }
 5892
 5893    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5894        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5895            return;
 5896        };
 5897        let windows = cx.windows();
 5898        let Some(next_window) = windows
 5899            .iter()
 5900            .cycle()
 5901            .skip_while(|window| window.window_id() != current_window_id)
 5902            .nth(1)
 5903        else {
 5904            return;
 5905        };
 5906        next_window
 5907            .update(cx, |_, window, _| window.activate_window())
 5908            .ok();
 5909    }
 5910
 5911    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5912        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5913            return;
 5914        };
 5915        let windows = cx.windows();
 5916        let Some(prev_window) = windows
 5917            .iter()
 5918            .rev()
 5919            .cycle()
 5920            .skip_while(|window| window.window_id() != current_window_id)
 5921            .nth(1)
 5922        else {
 5923            return;
 5924        };
 5925        prev_window
 5926            .update(cx, |_, window, _| window.activate_window())
 5927            .ok();
 5928    }
 5929
 5930    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5931        if cx.stop_active_drag(window) {
 5932        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5933            dismiss_app_notification(&notification_id, cx);
 5934        } else {
 5935            cx.propagate();
 5936        }
 5937    }
 5938
 5939    fn adjust_dock_size_by_px(
 5940        &mut self,
 5941        panel_size: Pixels,
 5942        dock_pos: DockPosition,
 5943        px: Pixels,
 5944        window: &mut Window,
 5945        cx: &mut Context<Self>,
 5946    ) {
 5947        match dock_pos {
 5948            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5949            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5950            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5951        }
 5952    }
 5953
 5954    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5955        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5956
 5957        self.left_dock.update(cx, |left_dock, cx| {
 5958            if WorkspaceSettings::get_global(cx)
 5959                .resize_all_panels_in_dock
 5960                .contains(&DockPosition::Left)
 5961            {
 5962                left_dock.resize_all_panels(Some(size), window, cx);
 5963            } else {
 5964                left_dock.resize_active_panel(Some(size), window, cx);
 5965            }
 5966        });
 5967    }
 5968
 5969    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5970        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5971        self.left_dock.read_with(cx, |left_dock, cx| {
 5972            let left_dock_size = left_dock
 5973                .active_panel_size(window, cx)
 5974                .unwrap_or(Pixels(0.0));
 5975            if left_dock_size + size > self.bounds.right() {
 5976                size = self.bounds.right() - left_dock_size
 5977            }
 5978        });
 5979        self.right_dock.update(cx, |right_dock, cx| {
 5980            if WorkspaceSettings::get_global(cx)
 5981                .resize_all_panels_in_dock
 5982                .contains(&DockPosition::Right)
 5983            {
 5984                right_dock.resize_all_panels(Some(size), window, cx);
 5985            } else {
 5986                right_dock.resize_active_panel(Some(size), window, cx);
 5987            }
 5988        });
 5989    }
 5990
 5991    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5992        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5993        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5994            if WorkspaceSettings::get_global(cx)
 5995                .resize_all_panels_in_dock
 5996                .contains(&DockPosition::Bottom)
 5997            {
 5998                bottom_dock.resize_all_panels(Some(size), window, cx);
 5999            } else {
 6000                bottom_dock.resize_active_panel(Some(size), window, cx);
 6001            }
 6002        });
 6003    }
 6004
 6005    fn toggle_edit_predictions_all_files(
 6006        &mut self,
 6007        _: &ToggleEditPrediction,
 6008        _window: &mut Window,
 6009        cx: &mut Context<Self>,
 6010    ) {
 6011        let fs = self.project().read(cx).fs().clone();
 6012        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 6013        update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
 6014            file.defaults.show_edit_predictions = Some(!show_edit_predictions)
 6015        });
 6016    }
 6017}
 6018
 6019fn leader_border_for_pane(
 6020    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6021    pane: &Entity<Pane>,
 6022    _: &Window,
 6023    cx: &App,
 6024) -> Option<Div> {
 6025    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6026        if state.pane() == pane {
 6027            Some((*leader_id, state))
 6028        } else {
 6029            None
 6030        }
 6031    })?;
 6032
 6033    let mut leader_color = match leader_id {
 6034        CollaboratorId::PeerId(leader_peer_id) => {
 6035            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6036            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6037
 6038            cx.theme()
 6039                .players()
 6040                .color_for_participant(leader.participant_index.0)
 6041                .cursor
 6042        }
 6043        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6044    };
 6045    leader_color.fade_out(0.3);
 6046    Some(
 6047        div()
 6048            .absolute()
 6049            .size_full()
 6050            .left_0()
 6051            .top_0()
 6052            .border_2()
 6053            .border_color(leader_color),
 6054    )
 6055}
 6056
 6057fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6058    ZED_WINDOW_POSITION
 6059        .zip(*ZED_WINDOW_SIZE)
 6060        .map(|(position, size)| Bounds {
 6061            origin: position,
 6062            size,
 6063        })
 6064}
 6065
 6066fn open_items(
 6067    serialized_workspace: Option<SerializedWorkspace>,
 6068    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6069    window: &mut Window,
 6070    cx: &mut Context<Workspace>,
 6071) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6072    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6073        Workspace::load_workspace(
 6074            serialized_workspace,
 6075            project_paths_to_open
 6076                .iter()
 6077                .map(|(_, project_path)| project_path)
 6078                .cloned()
 6079                .collect(),
 6080            window,
 6081            cx,
 6082        )
 6083    });
 6084
 6085    cx.spawn_in(window, async move |workspace, cx| {
 6086        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6087
 6088        if let Some(restored_items) = restored_items {
 6089            let restored_items = restored_items.await?;
 6090
 6091            let restored_project_paths = restored_items
 6092                .iter()
 6093                .filter_map(|item| {
 6094                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6095                        .ok()
 6096                        .flatten()
 6097                })
 6098                .collect::<HashSet<_>>();
 6099
 6100            for restored_item in restored_items {
 6101                opened_items.push(restored_item.map(Ok));
 6102            }
 6103
 6104            project_paths_to_open
 6105                .iter_mut()
 6106                .for_each(|(_, project_path)| {
 6107                    if let Some(project_path_to_open) = project_path
 6108                        && restored_project_paths.contains(project_path_to_open)
 6109                    {
 6110                        *project_path = None;
 6111                    }
 6112                });
 6113        } else {
 6114            for _ in 0..project_paths_to_open.len() {
 6115                opened_items.push(None);
 6116            }
 6117        }
 6118        assert!(opened_items.len() == project_paths_to_open.len());
 6119
 6120        let tasks =
 6121            project_paths_to_open
 6122                .into_iter()
 6123                .enumerate()
 6124                .map(|(ix, (abs_path, project_path))| {
 6125                    let workspace = workspace.clone();
 6126                    cx.spawn(async move |cx| {
 6127                        let file_project_path = project_path?;
 6128                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6129                            workspace.project().update(cx, |project, cx| {
 6130                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6131                            })
 6132                        });
 6133
 6134                        // We only want to open file paths here. If one of the items
 6135                        // here is a directory, it was already opened further above
 6136                        // with a `find_or_create_worktree`.
 6137                        if let Ok(task) = abs_path_task
 6138                            && task.await.is_none_or(|p| p.is_file())
 6139                        {
 6140                            return Some((
 6141                                ix,
 6142                                workspace
 6143                                    .update_in(cx, |workspace, window, cx| {
 6144                                        workspace.open_path(
 6145                                            file_project_path,
 6146                                            None,
 6147                                            true,
 6148                                            window,
 6149                                            cx,
 6150                                        )
 6151                                    })
 6152                                    .log_err()?
 6153                                    .await,
 6154                            ));
 6155                        }
 6156                        None
 6157                    })
 6158                });
 6159
 6160        let tasks = tasks.collect::<Vec<_>>();
 6161
 6162        let tasks = futures::future::join_all(tasks);
 6163        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6164            opened_items[ix] = Some(path_open_result);
 6165        }
 6166
 6167        Ok(opened_items)
 6168    })
 6169}
 6170
 6171enum ActivateInDirectionTarget {
 6172    Pane(Entity<Pane>),
 6173    Dock(Entity<Dock>),
 6174}
 6175
 6176fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6177    workspace
 6178        .update(cx, |workspace, _, cx| {
 6179            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6180                struct DatabaseFailedNotification;
 6181
 6182                workspace.show_notification(
 6183                    NotificationId::unique::<DatabaseFailedNotification>(),
 6184                    cx,
 6185                    |cx| {
 6186                        cx.new(|cx| {
 6187                            MessageNotification::new("Failed to load the database file.", cx)
 6188                                .primary_message("File an Issue")
 6189                                .primary_icon(IconName::Plus)
 6190                                .primary_on_click(|window, cx| {
 6191                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6192                                })
 6193                        })
 6194                    },
 6195                );
 6196            }
 6197        })
 6198        .log_err();
 6199}
 6200
 6201fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6202    if val == 0 {
 6203        ThemeSettings::get_global(cx).ui_font_size(cx)
 6204    } else {
 6205        px(val as f32)
 6206    }
 6207}
 6208
 6209fn adjust_active_dock_size_by_px(
 6210    px: Pixels,
 6211    workspace: &mut Workspace,
 6212    window: &mut Window,
 6213    cx: &mut Context<Workspace>,
 6214) {
 6215    let Some(active_dock) = workspace
 6216        .all_docks()
 6217        .into_iter()
 6218        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6219    else {
 6220        return;
 6221    };
 6222    let dock = active_dock.read(cx);
 6223    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6224        return;
 6225    };
 6226    let dock_pos = dock.position();
 6227    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6228}
 6229
 6230fn adjust_open_docks_size_by_px(
 6231    px: Pixels,
 6232    workspace: &mut Workspace,
 6233    window: &mut Window,
 6234    cx: &mut Context<Workspace>,
 6235) {
 6236    let docks = workspace
 6237        .all_docks()
 6238        .into_iter()
 6239        .filter_map(|dock| {
 6240            if dock.read(cx).is_open() {
 6241                let dock = dock.read(cx);
 6242                let panel_size = dock.active_panel_size(window, cx)?;
 6243                let dock_pos = dock.position();
 6244                Some((panel_size, dock_pos, px))
 6245            } else {
 6246                None
 6247            }
 6248        })
 6249        .collect::<Vec<_>>();
 6250
 6251    docks
 6252        .into_iter()
 6253        .for_each(|(panel_size, dock_pos, offset)| {
 6254            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6255        });
 6256}
 6257
 6258impl Focusable for Workspace {
 6259    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6260        self.active_pane.focus_handle(cx)
 6261    }
 6262}
 6263
 6264#[derive(Clone)]
 6265struct DraggedDock(DockPosition);
 6266
 6267impl Render for DraggedDock {
 6268    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6269        gpui::Empty
 6270    }
 6271}
 6272
 6273impl Render for Workspace {
 6274    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6275        let mut context = KeyContext::new_with_defaults();
 6276        context.add("Workspace");
 6277        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6278        if let Some(status) = self
 6279            .debugger_provider
 6280            .as_ref()
 6281            .and_then(|provider| provider.active_thread_state(cx))
 6282        {
 6283            match status {
 6284                ThreadStatus::Running | ThreadStatus::Stepping => {
 6285                    context.add("debugger_running");
 6286                }
 6287                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6288                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6289            }
 6290        }
 6291
 6292        let centered_layout = self.centered_layout
 6293            && self.center.panes().len() == 1
 6294            && self.active_item(cx).is_some();
 6295        let render_padding = |size| {
 6296            (size > 0.0).then(|| {
 6297                div()
 6298                    .h_full()
 6299                    .w(relative(size))
 6300                    .bg(cx.theme().colors().editor_background)
 6301                    .border_color(cx.theme().colors().pane_group_border)
 6302            })
 6303        };
 6304        let paddings = if centered_layout {
 6305            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6306            (
 6307                render_padding(Self::adjust_padding(settings.left_padding)),
 6308                render_padding(Self::adjust_padding(settings.right_padding)),
 6309            )
 6310        } else {
 6311            (None, None)
 6312        };
 6313        let ui_font = theme::setup_ui_font(window, cx);
 6314
 6315        let theme = cx.theme().clone();
 6316        let colors = theme.colors();
 6317        let notification_entities = self
 6318            .notifications
 6319            .iter()
 6320            .map(|(_, notification)| notification.entity_id())
 6321            .collect::<Vec<_>>();
 6322        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6323
 6324        client_side_decorations(
 6325            self.actions(div(), window, cx)
 6326                .key_context(context)
 6327                .relative()
 6328                .size_full()
 6329                .flex()
 6330                .flex_col()
 6331                .font(ui_font)
 6332                .gap_0()
 6333                .justify_start()
 6334                .items_start()
 6335                .text_color(colors.text)
 6336                .overflow_hidden()
 6337                .children(self.titlebar_item.clone())
 6338                .on_modifiers_changed(move |_, _, cx| {
 6339                    for &id in &notification_entities {
 6340                        cx.notify(id);
 6341                    }
 6342                })
 6343                .child(
 6344                    div()
 6345                        .size_full()
 6346                        .relative()
 6347                        .flex_1()
 6348                        .flex()
 6349                        .flex_col()
 6350                        .child(
 6351                            div()
 6352                                .id("workspace")
 6353                                .bg(colors.background)
 6354                                .relative()
 6355                                .flex_1()
 6356                                .w_full()
 6357                                .flex()
 6358                                .flex_col()
 6359                                .overflow_hidden()
 6360                                .border_t_1()
 6361                                .border_b_1()
 6362                                .border_color(colors.border)
 6363                                .child({
 6364                                    let this = cx.entity();
 6365                                    canvas(
 6366                                        move |bounds, window, cx| {
 6367                                            this.update(cx, |this, cx| {
 6368                                                let bounds_changed = this.bounds != bounds;
 6369                                                this.bounds = bounds;
 6370
 6371                                                if bounds_changed {
 6372                                                    this.left_dock.update(cx, |dock, cx| {
 6373                                                        dock.clamp_panel_size(
 6374                                                            bounds.size.width,
 6375                                                            window,
 6376                                                            cx,
 6377                                                        )
 6378                                                    });
 6379
 6380                                                    this.right_dock.update(cx, |dock, cx| {
 6381                                                        dock.clamp_panel_size(
 6382                                                            bounds.size.width,
 6383                                                            window,
 6384                                                            cx,
 6385                                                        )
 6386                                                    });
 6387
 6388                                                    this.bottom_dock.update(cx, |dock, cx| {
 6389                                                        dock.clamp_panel_size(
 6390                                                            bounds.size.height,
 6391                                                            window,
 6392                                                            cx,
 6393                                                        )
 6394                                                    });
 6395                                                }
 6396                                            })
 6397                                        },
 6398                                        |_, _, _, _| {},
 6399                                    )
 6400                                    .absolute()
 6401                                    .size_full()
 6402                                })
 6403                                .when(self.zoomed.is_none(), |this| {
 6404                                    this.on_drag_move(cx.listener(
 6405                                        move |workspace,
 6406                                              e: &DragMoveEvent<DraggedDock>,
 6407                                              window,
 6408                                              cx| {
 6409                                            if workspace.previous_dock_drag_coordinates
 6410                                                != Some(e.event.position)
 6411                                            {
 6412                                                workspace.previous_dock_drag_coordinates =
 6413                                                    Some(e.event.position);
 6414                                                match e.drag(cx).0 {
 6415                                                    DockPosition::Left => {
 6416                                                        workspace.resize_left_dock(
 6417                                                            e.event.position.x
 6418                                                                - workspace.bounds.left(),
 6419                                                            window,
 6420                                                            cx,
 6421                                                        );
 6422                                                    }
 6423                                                    DockPosition::Right => {
 6424                                                        workspace.resize_right_dock(
 6425                                                            workspace.bounds.right()
 6426                                                                - e.event.position.x,
 6427                                                            window,
 6428                                                            cx,
 6429                                                        );
 6430                                                    }
 6431                                                    DockPosition::Bottom => {
 6432                                                        workspace.resize_bottom_dock(
 6433                                                            workspace.bounds.bottom()
 6434                                                                - e.event.position.y,
 6435                                                            window,
 6436                                                            cx,
 6437                                                        );
 6438                                                    }
 6439                                                };
 6440                                                workspace.serialize_workspace(window, cx);
 6441                                            }
 6442                                        },
 6443                                    ))
 6444                                })
 6445                                .child({
 6446                                    match bottom_dock_layout {
 6447                                        BottomDockLayout::Full => div()
 6448                                            .flex()
 6449                                            .flex_col()
 6450                                            .h_full()
 6451                                            .child(
 6452                                                div()
 6453                                                    .flex()
 6454                                                    .flex_row()
 6455                                                    .flex_1()
 6456                                                    .overflow_hidden()
 6457                                                    .children(self.render_dock(
 6458                                                        DockPosition::Left,
 6459                                                        &self.left_dock,
 6460                                                        window,
 6461                                                        cx,
 6462                                                    ))
 6463                                                    .child(
 6464                                                        div()
 6465                                                            .flex()
 6466                                                            .flex_col()
 6467                                                            .flex_1()
 6468                                                            .overflow_hidden()
 6469                                                            .child(
 6470                                                                h_flex()
 6471                                                                    .flex_1()
 6472                                                                    .when_some(
 6473                                                                        paddings.0,
 6474                                                                        |this, p| {
 6475                                                                            this.child(
 6476                                                                                p.border_r_1(),
 6477                                                                            )
 6478                                                                        },
 6479                                                                    )
 6480                                                                    .child(self.center.render(
 6481                                                                        self.zoomed.as_ref(),
 6482                                                                        &PaneRenderContext {
 6483                                                                            follower_states:
 6484                                                                                &self.follower_states,
 6485                                                                            active_call: self.active_call(),
 6486                                                                            active_pane: &self.active_pane,
 6487                                                                            app_state: &self.app_state,
 6488                                                                            project: &self.project,
 6489                                                                            workspace: &self.weak_self,
 6490                                                                        },
 6491                                                                        window,
 6492                                                                        cx,
 6493                                                                    ))
 6494                                                                    .when_some(
 6495                                                                        paddings.1,
 6496                                                                        |this, p| {
 6497                                                                            this.child(
 6498                                                                                p.border_l_1(),
 6499                                                                            )
 6500                                                                        },
 6501                                                                    ),
 6502                                                            ),
 6503                                                    )
 6504                                                    .children(self.render_dock(
 6505                                                        DockPosition::Right,
 6506                                                        &self.right_dock,
 6507                                                        window,
 6508                                                        cx,
 6509                                                    )),
 6510                                            )
 6511                                            .child(div().w_full().children(self.render_dock(
 6512                                                DockPosition::Bottom,
 6513                                                &self.bottom_dock,
 6514                                                window,
 6515                                                cx
 6516                                            ))),
 6517
 6518                                        BottomDockLayout::LeftAligned => div()
 6519                                            .flex()
 6520                                            .flex_row()
 6521                                            .h_full()
 6522                                            .child(
 6523                                                div()
 6524                                                    .flex()
 6525                                                    .flex_col()
 6526                                                    .flex_1()
 6527                                                    .h_full()
 6528                                                    .child(
 6529                                                        div()
 6530                                                            .flex()
 6531                                                            .flex_row()
 6532                                                            .flex_1()
 6533                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6534                                                            .child(
 6535                                                                div()
 6536                                                                    .flex()
 6537                                                                    .flex_col()
 6538                                                                    .flex_1()
 6539                                                                    .overflow_hidden()
 6540                                                                    .child(
 6541                                                                        h_flex()
 6542                                                                            .flex_1()
 6543                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6544                                                                            .child(self.center.render(
 6545                                                                                self.zoomed.as_ref(),
 6546                                                                                &PaneRenderContext {
 6547                                                                                    follower_states:
 6548                                                                                        &self.follower_states,
 6549                                                                                    active_call: self.active_call(),
 6550                                                                                    active_pane: &self.active_pane,
 6551                                                                                    app_state: &self.app_state,
 6552                                                                                    project: &self.project,
 6553                                                                                    workspace: &self.weak_self,
 6554                                                                                },
 6555                                                                                window,
 6556                                                                                cx,
 6557                                                                            ))
 6558                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6559                                                                    )
 6560                                                            )
 6561                                                    )
 6562                                                    .child(
 6563                                                        div()
 6564                                                            .w_full()
 6565                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6566                                                    ),
 6567                                            )
 6568                                            .children(self.render_dock(
 6569                                                DockPosition::Right,
 6570                                                &self.right_dock,
 6571                                                window,
 6572                                                cx,
 6573                                            )),
 6574
 6575                                        BottomDockLayout::RightAligned => div()
 6576                                            .flex()
 6577                                            .flex_row()
 6578                                            .h_full()
 6579                                            .children(self.render_dock(
 6580                                                DockPosition::Left,
 6581                                                &self.left_dock,
 6582                                                window,
 6583                                                cx,
 6584                                            ))
 6585                                            .child(
 6586                                                div()
 6587                                                    .flex()
 6588                                                    .flex_col()
 6589                                                    .flex_1()
 6590                                                    .h_full()
 6591                                                    .child(
 6592                                                        div()
 6593                                                            .flex()
 6594                                                            .flex_row()
 6595                                                            .flex_1()
 6596                                                            .child(
 6597                                                                div()
 6598                                                                    .flex()
 6599                                                                    .flex_col()
 6600                                                                    .flex_1()
 6601                                                                    .overflow_hidden()
 6602                                                                    .child(
 6603                                                                        h_flex()
 6604                                                                            .flex_1()
 6605                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6606                                                                            .child(self.center.render(
 6607                                                                                self.zoomed.as_ref(),
 6608                                                                                &PaneRenderContext {
 6609                                                                                    follower_states:
 6610                                                                                        &self.follower_states,
 6611                                                                                    active_call: self.active_call(),
 6612                                                                                    active_pane: &self.active_pane,
 6613                                                                                    app_state: &self.app_state,
 6614                                                                                    project: &self.project,
 6615                                                                                    workspace: &self.weak_self,
 6616                                                                                },
 6617                                                                                window,
 6618                                                                                cx,
 6619                                                                            ))
 6620                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6621                                                                    )
 6622                                                            )
 6623                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6624                                                    )
 6625                                                    .child(
 6626                                                        div()
 6627                                                            .w_full()
 6628                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6629                                                    ),
 6630                                            ),
 6631
 6632                                        BottomDockLayout::Contained => div()
 6633                                            .flex()
 6634                                            .flex_row()
 6635                                            .h_full()
 6636                                            .children(self.render_dock(
 6637                                                DockPosition::Left,
 6638                                                &self.left_dock,
 6639                                                window,
 6640                                                cx,
 6641                                            ))
 6642                                            .child(
 6643                                                div()
 6644                                                    .flex()
 6645                                                    .flex_col()
 6646                                                    .flex_1()
 6647                                                    .overflow_hidden()
 6648                                                    .child(
 6649                                                        h_flex()
 6650                                                            .flex_1()
 6651                                                            .when_some(paddings.0, |this, p| {
 6652                                                                this.child(p.border_r_1())
 6653                                                            })
 6654                                                            .child(self.center.render(
 6655                                                                self.zoomed.as_ref(),
 6656                                                                &PaneRenderContext {
 6657                                                                    follower_states:
 6658                                                                        &self.follower_states,
 6659                                                                    active_call: self.active_call(),
 6660                                                                    active_pane: &self.active_pane,
 6661                                                                    app_state: &self.app_state,
 6662                                                                    project: &self.project,
 6663                                                                    workspace: &self.weak_self,
 6664                                                                },
 6665                                                                window,
 6666                                                                cx,
 6667                                                            ))
 6668                                                            .when_some(paddings.1, |this, p| {
 6669                                                                this.child(p.border_l_1())
 6670                                                            }),
 6671                                                    )
 6672                                                    .children(self.render_dock(
 6673                                                        DockPosition::Bottom,
 6674                                                        &self.bottom_dock,
 6675                                                        window,
 6676                                                        cx,
 6677                                                    )),
 6678                                            )
 6679                                            .children(self.render_dock(
 6680                                                DockPosition::Right,
 6681                                                &self.right_dock,
 6682                                                window,
 6683                                                cx,
 6684                                            )),
 6685                                    }
 6686                                })
 6687                                .children(self.zoomed.as_ref().and_then(|view| {
 6688                                    Some(div()
 6689                                        .occlude()
 6690                                        .absolute()
 6691                                        .overflow_hidden()
 6692                                        .border_color(colors.border)
 6693                                        .bg(colors.background)
 6694                                        .child(view.upgrade()?)
 6695                                        .inset_0()
 6696                                        .shadow_lg())
 6697                                }))
 6698                                .children(self.render_notifications(window, cx)),
 6699                        )
 6700                        .child(self.status_bar.clone())
 6701                        .child(self.modal_layer.clone())
 6702                        .child(self.toast_layer.clone()),
 6703                ),
 6704            window,
 6705            cx,
 6706        )
 6707    }
 6708}
 6709
 6710impl WorkspaceStore {
 6711    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6712        Self {
 6713            workspaces: Default::default(),
 6714            _subscriptions: vec![
 6715                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6716                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6717            ],
 6718            client,
 6719        }
 6720    }
 6721
 6722    pub fn update_followers(
 6723        &self,
 6724        project_id: Option<u64>,
 6725        update: proto::update_followers::Variant,
 6726        cx: &App,
 6727    ) -> Option<()> {
 6728        let active_call = ActiveCall::try_global(cx)?;
 6729        let room_id = active_call.read(cx).room()?.read(cx).id();
 6730        self.client
 6731            .send(proto::UpdateFollowers {
 6732                room_id,
 6733                project_id,
 6734                variant: Some(update),
 6735            })
 6736            .log_err()
 6737    }
 6738
 6739    pub async fn handle_follow(
 6740        this: Entity<Self>,
 6741        envelope: TypedEnvelope<proto::Follow>,
 6742        mut cx: AsyncApp,
 6743    ) -> Result<proto::FollowResponse> {
 6744        this.update(&mut cx, |this, cx| {
 6745            let follower = Follower {
 6746                project_id: envelope.payload.project_id,
 6747                peer_id: envelope.original_sender_id()?,
 6748            };
 6749
 6750            let mut response = proto::FollowResponse::default();
 6751            this.workspaces.retain(|workspace| {
 6752                workspace
 6753                    .update(cx, |workspace, window, cx| {
 6754                        let handler_response =
 6755                            workspace.handle_follow(follower.project_id, window, cx);
 6756                        if let Some(active_view) = handler_response.active_view
 6757                            && workspace.project.read(cx).remote_id() == follower.project_id
 6758                        {
 6759                            response.active_view = Some(active_view)
 6760                        }
 6761                    })
 6762                    .is_ok()
 6763            });
 6764
 6765            Ok(response)
 6766        })?
 6767    }
 6768
 6769    async fn handle_update_followers(
 6770        this: Entity<Self>,
 6771        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6772        mut cx: AsyncApp,
 6773    ) -> Result<()> {
 6774        let leader_id = envelope.original_sender_id()?;
 6775        let update = envelope.payload;
 6776
 6777        this.update(&mut cx, |this, cx| {
 6778            this.workspaces.retain(|workspace| {
 6779                workspace
 6780                    .update(cx, |workspace, window, cx| {
 6781                        let project_id = workspace.project.read(cx).remote_id();
 6782                        if update.project_id != project_id && update.project_id.is_some() {
 6783                            return;
 6784                        }
 6785                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6786                    })
 6787                    .is_ok()
 6788            });
 6789            Ok(())
 6790        })?
 6791    }
 6792
 6793    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6794        &self.workspaces
 6795    }
 6796}
 6797
 6798impl ViewId {
 6799    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6800        Ok(Self {
 6801            creator: message
 6802                .creator
 6803                .map(CollaboratorId::PeerId)
 6804                .context("creator is missing")?,
 6805            id: message.id,
 6806        })
 6807    }
 6808
 6809    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6810        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6811            Some(proto::ViewId {
 6812                creator: Some(peer_id),
 6813                id: self.id,
 6814            })
 6815        } else {
 6816            None
 6817        }
 6818    }
 6819}
 6820
 6821impl FollowerState {
 6822    fn pane(&self) -> &Entity<Pane> {
 6823        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6824    }
 6825}
 6826
 6827pub trait WorkspaceHandle {
 6828    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6829}
 6830
 6831impl WorkspaceHandle for Entity<Workspace> {
 6832    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6833        self.read(cx)
 6834            .worktrees(cx)
 6835            .flat_map(|worktree| {
 6836                let worktree_id = worktree.read(cx).id();
 6837                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6838                    worktree_id,
 6839                    path: f.path.clone(),
 6840                })
 6841            })
 6842            .collect::<Vec<_>>()
 6843    }
 6844}
 6845
 6846pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6847    DB.last_workspace().await.log_err().flatten()
 6848}
 6849
 6850pub fn last_session_workspace_locations(
 6851    last_session_id: &str,
 6852    last_session_window_stack: Option<Vec<WindowId>>,
 6853) -> Option<Vec<SerializedWorkspaceLocation>> {
 6854    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6855        .log_err()
 6856}
 6857
 6858actions!(
 6859    collab,
 6860    [
 6861        /// Opens the channel notes for the current call.
 6862        ///
 6863        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6864        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6865        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6866        OpenChannelNotes,
 6867        /// Mutes your microphone.
 6868        Mute,
 6869        /// Deafens yourself (mute both microphone and speakers).
 6870        Deafen,
 6871        /// Leaves the current call.
 6872        LeaveCall,
 6873        /// Shares the current project with collaborators.
 6874        ShareProject,
 6875        /// Shares your screen with collaborators.
 6876        ScreenShare
 6877    ]
 6878);
 6879actions!(
 6880    zed,
 6881    [
 6882        /// Opens the Zed log file.
 6883        OpenLog
 6884    ]
 6885);
 6886
 6887async fn join_channel_internal(
 6888    channel_id: ChannelId,
 6889    app_state: &Arc<AppState>,
 6890    requesting_window: Option<WindowHandle<Workspace>>,
 6891    active_call: &Entity<ActiveCall>,
 6892    cx: &mut AsyncApp,
 6893) -> Result<bool> {
 6894    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6895        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6896            return (false, None);
 6897        };
 6898
 6899        let already_in_channel = room.channel_id() == Some(channel_id);
 6900        let should_prompt = room.is_sharing_project()
 6901            && !room.remote_participants().is_empty()
 6902            && !already_in_channel;
 6903        let open_room = if already_in_channel {
 6904            active_call.room().cloned()
 6905        } else {
 6906            None
 6907        };
 6908        (should_prompt, open_room)
 6909    })?;
 6910
 6911    if let Some(room) = open_room {
 6912        let task = room.update(cx, |room, cx| {
 6913            if let Some((project, host)) = room.most_active_project(cx) {
 6914                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6915            }
 6916
 6917            None
 6918        })?;
 6919        if let Some(task) = task {
 6920            task.await?;
 6921        }
 6922        return anyhow::Ok(true);
 6923    }
 6924
 6925    if should_prompt {
 6926        if let Some(workspace) = requesting_window {
 6927            let answer = workspace
 6928                .update(cx, |_, window, cx| {
 6929                    window.prompt(
 6930                        PromptLevel::Warning,
 6931                        "Do you want to switch channels?",
 6932                        Some("Leaving this call will unshare your current project."),
 6933                        &["Yes, Join Channel", "Cancel"],
 6934                        cx,
 6935                    )
 6936                })?
 6937                .await;
 6938
 6939            if answer == Ok(1) {
 6940                return Ok(false);
 6941            }
 6942        } else {
 6943            return Ok(false); // unreachable!() hopefully
 6944        }
 6945    }
 6946
 6947    let client = cx.update(|cx| active_call.read(cx).client())?;
 6948
 6949    let mut client_status = client.status();
 6950
 6951    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6952    'outer: loop {
 6953        let Some(status) = client_status.recv().await else {
 6954            anyhow::bail!("error connecting");
 6955        };
 6956
 6957        match status {
 6958            Status::Connecting
 6959            | Status::Authenticating
 6960            | Status::Authenticated
 6961            | Status::Reconnecting
 6962            | Status::Reauthenticating => continue,
 6963            Status::Connected { .. } => break 'outer,
 6964            Status::SignedOut | Status::AuthenticationError => {
 6965                return Err(ErrorCode::SignedOut.into());
 6966            }
 6967            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6968            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6969                return Err(ErrorCode::Disconnected.into());
 6970            }
 6971        }
 6972    }
 6973
 6974    let room = active_call
 6975        .update(cx, |active_call, cx| {
 6976            active_call.join_channel(channel_id, cx)
 6977        })?
 6978        .await?;
 6979
 6980    let Some(room) = room else {
 6981        return anyhow::Ok(true);
 6982    };
 6983
 6984    room.update(cx, |room, _| room.room_update_completed())?
 6985        .await;
 6986
 6987    let task = room.update(cx, |room, cx| {
 6988        if let Some((project, host)) = room.most_active_project(cx) {
 6989            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6990        }
 6991
 6992        // If you are the first to join a channel, see if you should share your project.
 6993        if room.remote_participants().is_empty()
 6994            && !room.local_participant_is_guest()
 6995            && let Some(workspace) = requesting_window
 6996        {
 6997            let project = workspace.update(cx, |workspace, _, cx| {
 6998                let project = workspace.project.read(cx);
 6999
 7000                if !CallSettings::get_global(cx).share_on_join {
 7001                    return None;
 7002                }
 7003
 7004                if (project.is_local() || project.is_via_ssh())
 7005                    && project.visible_worktrees(cx).any(|tree| {
 7006                        tree.read(cx)
 7007                            .root_entry()
 7008                            .is_some_and(|entry| entry.is_dir())
 7009                    })
 7010                {
 7011                    Some(workspace.project.clone())
 7012                } else {
 7013                    None
 7014                }
 7015            });
 7016            if let Ok(Some(project)) = project {
 7017                return Some(cx.spawn(async move |room, cx| {
 7018                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7019                        .await?;
 7020                    Ok(())
 7021                }));
 7022            }
 7023        }
 7024
 7025        None
 7026    })?;
 7027    if let Some(task) = task {
 7028        task.await?;
 7029        return anyhow::Ok(true);
 7030    }
 7031    anyhow::Ok(false)
 7032}
 7033
 7034pub fn join_channel(
 7035    channel_id: ChannelId,
 7036    app_state: Arc<AppState>,
 7037    requesting_window: Option<WindowHandle<Workspace>>,
 7038    cx: &mut App,
 7039) -> Task<Result<()>> {
 7040    let active_call = ActiveCall::global(cx);
 7041    cx.spawn(async move |cx| {
 7042        let result = join_channel_internal(
 7043            channel_id,
 7044            &app_state,
 7045            requesting_window,
 7046            &active_call,
 7047             cx,
 7048        )
 7049            .await;
 7050
 7051        // join channel succeeded, and opened a window
 7052        if matches!(result, Ok(true)) {
 7053            return anyhow::Ok(());
 7054        }
 7055
 7056        // find an existing workspace to focus and show call controls
 7057        let mut active_window =
 7058            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7059        if active_window.is_none() {
 7060            // no open workspaces, make one to show the error in (blergh)
 7061            let (window_handle, _) = cx
 7062                .update(|cx| {
 7063                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7064                })?
 7065                .await?;
 7066
 7067            if result.is_ok() {
 7068                cx.update(|cx| {
 7069                    cx.dispatch_action(&OpenChannelNotes);
 7070                }).log_err();
 7071            }
 7072
 7073            active_window = Some(window_handle);
 7074        }
 7075
 7076        if let Err(err) = result {
 7077            log::error!("failed to join channel: {}", err);
 7078            if let Some(active_window) = active_window {
 7079                active_window
 7080                    .update(cx, |_, window, cx| {
 7081                        let detail: SharedString = match err.error_code() {
 7082                            ErrorCode::SignedOut => {
 7083                                "Please sign in to continue.".into()
 7084                            }
 7085                            ErrorCode::UpgradeRequired => {
 7086                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7087                            }
 7088                            ErrorCode::NoSuchChannel => {
 7089                                "No matching channel was found. Please check the link and try again.".into()
 7090                            }
 7091                            ErrorCode::Forbidden => {
 7092                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7093                            }
 7094                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7095                            _ => format!("{}\n\nPlease try again.", err).into(),
 7096                        };
 7097                        window.prompt(
 7098                            PromptLevel::Critical,
 7099                            "Failed to join channel",
 7100                            Some(&detail),
 7101                            &["Ok"],
 7102                        cx)
 7103                    })?
 7104                    .await
 7105                    .ok();
 7106            }
 7107        }
 7108
 7109        // return ok, we showed the error to the user.
 7110        anyhow::Ok(())
 7111    })
 7112}
 7113
 7114pub async fn get_any_active_workspace(
 7115    app_state: Arc<AppState>,
 7116    mut cx: AsyncApp,
 7117) -> anyhow::Result<WindowHandle<Workspace>> {
 7118    // find an existing workspace to focus and show call controls
 7119    let active_window = activate_any_workspace_window(&mut cx);
 7120    if active_window.is_none() {
 7121        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7122            .await?;
 7123    }
 7124    activate_any_workspace_window(&mut cx).context("could not open zed")
 7125}
 7126
 7127fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7128    cx.update(|cx| {
 7129        if let Some(workspace_window) = cx
 7130            .active_window()
 7131            .and_then(|window| window.downcast::<Workspace>())
 7132        {
 7133            return Some(workspace_window);
 7134        }
 7135
 7136        for window in cx.windows() {
 7137            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7138                workspace_window
 7139                    .update(cx, |_, window, _| window.activate_window())
 7140                    .ok();
 7141                return Some(workspace_window);
 7142            }
 7143        }
 7144        None
 7145    })
 7146    .ok()
 7147    .flatten()
 7148}
 7149
 7150pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7151    cx.windows()
 7152        .into_iter()
 7153        .filter_map(|window| window.downcast::<Workspace>())
 7154        .filter(|workspace| {
 7155            workspace
 7156                .read(cx)
 7157                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7158        })
 7159        .collect()
 7160}
 7161
 7162#[derive(Default)]
 7163pub struct OpenOptions {
 7164    pub visible: Option<OpenVisible>,
 7165    pub focus: Option<bool>,
 7166    pub open_new_workspace: Option<bool>,
 7167    pub replace_window: Option<WindowHandle<Workspace>>,
 7168    pub env: Option<HashMap<String, String>>,
 7169}
 7170
 7171#[allow(clippy::type_complexity)]
 7172pub fn open_paths(
 7173    abs_paths: &[PathBuf],
 7174    app_state: Arc<AppState>,
 7175    open_options: OpenOptions,
 7176    cx: &mut App,
 7177) -> Task<
 7178    anyhow::Result<(
 7179        WindowHandle<Workspace>,
 7180        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7181    )>,
 7182> {
 7183    let abs_paths = abs_paths.to_vec();
 7184    let mut existing = None;
 7185    let mut best_match = None;
 7186    let mut open_visible = OpenVisible::All;
 7187
 7188    cx.spawn(async move |cx| {
 7189        if open_options.open_new_workspace != Some(true) {
 7190            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7191            let all_metadatas = futures::future::join_all(all_paths)
 7192                .await
 7193                .into_iter()
 7194                .filter_map(|result| result.ok().flatten())
 7195                .collect::<Vec<_>>();
 7196
 7197            cx.update(|cx| {
 7198                for window in local_workspace_windows(cx) {
 7199                    if let Ok(workspace) = window.read(cx) {
 7200                        let m = workspace.project.read(cx).visibility_for_paths(
 7201                            &abs_paths,
 7202                            &all_metadatas,
 7203                            open_options.open_new_workspace == None,
 7204                            cx,
 7205                        );
 7206                        if m > best_match {
 7207                            existing = Some(window);
 7208                            best_match = m;
 7209                        } else if best_match.is_none()
 7210                            && open_options.open_new_workspace == Some(false)
 7211                        {
 7212                            existing = Some(window)
 7213                        }
 7214                    }
 7215                }
 7216            })?;
 7217
 7218            if open_options.open_new_workspace.is_none()
 7219                && existing.is_none()
 7220                && all_metadatas.iter().all(|file| !file.is_dir)
 7221            {
 7222                cx.update(|cx| {
 7223                    if let Some(window) = cx
 7224                        .active_window()
 7225                        .and_then(|window| window.downcast::<Workspace>())
 7226                        && let Ok(workspace) = window.read(cx)
 7227                    {
 7228                        let project = workspace.project().read(cx);
 7229                        if project.is_local() && !project.is_via_collab() {
 7230                            existing = Some(window);
 7231                            open_visible = OpenVisible::None;
 7232                            return;
 7233                        }
 7234                    }
 7235                    for window in local_workspace_windows(cx) {
 7236                        if let Ok(workspace) = window.read(cx) {
 7237                            let project = workspace.project().read(cx);
 7238                            if project.is_via_collab() {
 7239                                continue;
 7240                            }
 7241                            existing = Some(window);
 7242                            open_visible = OpenVisible::None;
 7243                            break;
 7244                        }
 7245                    }
 7246                })?;
 7247            }
 7248        }
 7249
 7250        if let Some(existing) = existing {
 7251            let open_task = existing
 7252                .update(cx, |workspace, window, cx| {
 7253                    window.activate_window();
 7254                    workspace.open_paths(
 7255                        abs_paths,
 7256                        OpenOptions {
 7257                            visible: Some(open_visible),
 7258                            ..Default::default()
 7259                        },
 7260                        None,
 7261                        window,
 7262                        cx,
 7263                    )
 7264                })?
 7265                .await;
 7266
 7267            _ = existing.update(cx, |workspace, _, cx| {
 7268                for item in open_task.iter().flatten() {
 7269                    if let Err(e) = item {
 7270                        workspace.show_error(&e, cx);
 7271                    }
 7272                }
 7273            });
 7274
 7275            Ok((existing, open_task))
 7276        } else {
 7277            cx.update(move |cx| {
 7278                Workspace::new_local(
 7279                    abs_paths,
 7280                    app_state.clone(),
 7281                    open_options.replace_window,
 7282                    open_options.env,
 7283                    cx,
 7284                )
 7285            })?
 7286            .await
 7287        }
 7288    })
 7289}
 7290
 7291pub fn open_new(
 7292    open_options: OpenOptions,
 7293    app_state: Arc<AppState>,
 7294    cx: &mut App,
 7295    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7296) -> Task<anyhow::Result<()>> {
 7297    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7298    cx.spawn(async move |cx| {
 7299        let (workspace, opened_paths) = task.await?;
 7300        workspace.update(cx, |workspace, window, cx| {
 7301            if opened_paths.is_empty() {
 7302                init(workspace, window, cx)
 7303            }
 7304        })?;
 7305        Ok(())
 7306    })
 7307}
 7308
 7309pub fn create_and_open_local_file(
 7310    path: &'static Path,
 7311    window: &mut Window,
 7312    cx: &mut Context<Workspace>,
 7313    default_content: impl 'static + Send + FnOnce() -> Rope,
 7314) -> Task<Result<Box<dyn ItemHandle>>> {
 7315    cx.spawn_in(window, async move |workspace, cx| {
 7316        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7317        if !fs.is_file(path).await {
 7318            fs.create_file(path, Default::default()).await?;
 7319            fs.save(path, &default_content(), Default::default())
 7320                .await?;
 7321        }
 7322
 7323        let mut items = workspace
 7324            .update_in(cx, |workspace, window, cx| {
 7325                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7326                    workspace.open_paths(
 7327                        vec![path.to_path_buf()],
 7328                        OpenOptions {
 7329                            visible: Some(OpenVisible::None),
 7330                            ..Default::default()
 7331                        },
 7332                        None,
 7333                        window,
 7334                        cx,
 7335                    )
 7336                })
 7337            })?
 7338            .await?
 7339            .await;
 7340
 7341        let item = items.pop().flatten();
 7342        item.with_context(|| format!("path {path:?} is not a file"))?
 7343    })
 7344}
 7345
 7346pub fn open_ssh_project_with_new_connection(
 7347    window: WindowHandle<Workspace>,
 7348    connection_options: SshConnectionOptions,
 7349    cancel_rx: oneshot::Receiver<()>,
 7350    delegate: Arc<dyn SshClientDelegate>,
 7351    app_state: Arc<AppState>,
 7352    paths: Vec<PathBuf>,
 7353    cx: &mut App,
 7354) -> Task<Result<()>> {
 7355    cx.spawn(async move |cx| {
 7356        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7357            serialize_ssh_project(connection_options.clone(), paths.clone(), cx).await?;
 7358
 7359        let session = match cx
 7360            .update(|cx| {
 7361                remote::SshRemoteClient::new(
 7362                    ConnectionIdentifier::Workspace(workspace_id.0),
 7363                    connection_options,
 7364                    cancel_rx,
 7365                    delegate,
 7366                    cx,
 7367                )
 7368            })?
 7369            .await?
 7370        {
 7371            Some(result) => result,
 7372            None => return Ok(()),
 7373        };
 7374
 7375        let project = cx.update(|cx| {
 7376            project::Project::ssh(
 7377                session,
 7378                app_state.client.clone(),
 7379                app_state.node_runtime.clone(),
 7380                app_state.user_store.clone(),
 7381                app_state.languages.clone(),
 7382                app_state.fs.clone(),
 7383                cx,
 7384            )
 7385        })?;
 7386
 7387        open_ssh_project_inner(
 7388            project,
 7389            paths,
 7390            serialized_ssh_project,
 7391            workspace_id,
 7392            serialized_workspace,
 7393            app_state,
 7394            window,
 7395            cx,
 7396        )
 7397        .await
 7398    })
 7399}
 7400
 7401pub fn open_ssh_project_with_existing_connection(
 7402    connection_options: SshConnectionOptions,
 7403    project: Entity<Project>,
 7404    paths: Vec<PathBuf>,
 7405    app_state: Arc<AppState>,
 7406    window: WindowHandle<Workspace>,
 7407    cx: &mut AsyncApp,
 7408) -> Task<Result<()>> {
 7409    cx.spawn(async move |cx| {
 7410        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7411            serialize_ssh_project(connection_options.clone(), paths.clone(), cx).await?;
 7412
 7413        open_ssh_project_inner(
 7414            project,
 7415            paths,
 7416            serialized_ssh_project,
 7417            workspace_id,
 7418            serialized_workspace,
 7419            app_state,
 7420            window,
 7421            cx,
 7422        )
 7423        .await
 7424    })
 7425}
 7426
 7427async fn open_ssh_project_inner(
 7428    project: Entity<Project>,
 7429    paths: Vec<PathBuf>,
 7430    serialized_ssh_project: SerializedSshProject,
 7431    workspace_id: WorkspaceId,
 7432    serialized_workspace: Option<SerializedWorkspace>,
 7433    app_state: Arc<AppState>,
 7434    window: WindowHandle<Workspace>,
 7435    cx: &mut AsyncApp,
 7436) -> Result<()> {
 7437    let toolchains = DB.toolchains(workspace_id).await?;
 7438    for (toolchain, worktree_id, path) in toolchains {
 7439        project
 7440            .update(cx, |this, cx| {
 7441                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7442            })?
 7443            .await;
 7444    }
 7445    let mut project_paths_to_open = vec![];
 7446    let mut project_path_errors = vec![];
 7447
 7448    for path in paths {
 7449        let result = cx
 7450            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7451            .await;
 7452        match result {
 7453            Ok((_, project_path)) => {
 7454                project_paths_to_open.push((path.clone(), Some(project_path)));
 7455            }
 7456            Err(error) => {
 7457                project_path_errors.push(error);
 7458            }
 7459        };
 7460    }
 7461
 7462    if project_paths_to_open.is_empty() {
 7463        return Err(project_path_errors.pop().context("no paths given")?);
 7464    }
 7465
 7466    if let Some(detach_session_task) = window
 7467        .update(cx, |_workspace, window, cx| {
 7468            cx.spawn_in(window, async move |this, cx| {
 7469                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7470            })
 7471        })
 7472        .ok()
 7473    {
 7474        detach_session_task.await.ok();
 7475    }
 7476
 7477    cx.update_window(window.into(), |_, window, cx| {
 7478        window.replace_root(cx, |window, cx| {
 7479            telemetry::event!("SSH Project Opened");
 7480
 7481            let mut workspace =
 7482                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7483            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7484            workspace.update_history(cx);
 7485
 7486            if let Some(ref serialized) = serialized_workspace {
 7487                workspace.centered_layout = serialized.centered_layout;
 7488            }
 7489
 7490            workspace
 7491        });
 7492    })?;
 7493
 7494    window
 7495        .update(cx, |_, window, cx| {
 7496            window.activate_window();
 7497            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7498        })?
 7499        .await?;
 7500
 7501    window.update(cx, |workspace, _, cx| {
 7502        for error in project_path_errors {
 7503            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7504                if let Some(path) = error.error_tag("path") {
 7505                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7506                }
 7507            } else {
 7508                workspace.show_error(&error, cx)
 7509            }
 7510        }
 7511    })?;
 7512
 7513    Ok(())
 7514}
 7515
 7516fn serialize_ssh_project(
 7517    connection_options: SshConnectionOptions,
 7518    paths: Vec<PathBuf>,
 7519    cx: &AsyncApp,
 7520) -> Task<
 7521    Result<(
 7522        SerializedSshProject,
 7523        WorkspaceId,
 7524        Option<SerializedWorkspace>,
 7525    )>,
 7526> {
 7527    cx.background_spawn(async move {
 7528        let serialized_ssh_project = persistence::DB
 7529            .get_or_create_ssh_project(
 7530                connection_options.host.clone(),
 7531                connection_options.port,
 7532                paths
 7533                    .iter()
 7534                    .map(|path| path.to_string_lossy().to_string())
 7535                    .collect::<Vec<_>>(),
 7536                connection_options.username.clone(),
 7537            )
 7538            .await?;
 7539
 7540        let serialized_workspace =
 7541            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7542
 7543        let workspace_id = if let Some(workspace_id) =
 7544            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7545        {
 7546            workspace_id
 7547        } else {
 7548            persistence::DB.next_id().await?
 7549        };
 7550
 7551        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7552    })
 7553}
 7554
 7555pub fn join_in_room_project(
 7556    project_id: u64,
 7557    follow_user_id: u64,
 7558    app_state: Arc<AppState>,
 7559    cx: &mut App,
 7560) -> Task<Result<()>> {
 7561    let windows = cx.windows();
 7562    cx.spawn(async move |cx| {
 7563        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7564            window_handle
 7565                .downcast::<Workspace>()
 7566                .and_then(|window_handle| {
 7567                    window_handle
 7568                        .update(cx, |workspace, _window, cx| {
 7569                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7570                                Some(window_handle)
 7571                            } else {
 7572                                None
 7573                            }
 7574                        })
 7575                        .unwrap_or(None)
 7576                })
 7577        });
 7578
 7579        let workspace = if let Some(existing_workspace) = existing_workspace {
 7580            existing_workspace
 7581        } else {
 7582            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7583            let room = active_call
 7584                .read_with(cx, |call, _| call.room().cloned())?
 7585                .context("not in a call")?;
 7586            let project = room
 7587                .update(cx, |room, cx| {
 7588                    room.join_project(
 7589                        project_id,
 7590                        app_state.languages.clone(),
 7591                        app_state.fs.clone(),
 7592                        cx,
 7593                    )
 7594                })?
 7595                .await?;
 7596
 7597            let window_bounds_override = window_bounds_env_override();
 7598            cx.update(|cx| {
 7599                let mut options = (app_state.build_window_options)(None, cx);
 7600                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7601                cx.open_window(options, |window, cx| {
 7602                    cx.new(|cx| {
 7603                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7604                    })
 7605                })
 7606            })??
 7607        };
 7608
 7609        workspace.update(cx, |workspace, window, cx| {
 7610            cx.activate(true);
 7611            window.activate_window();
 7612
 7613            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7614                let follow_peer_id = room
 7615                    .read(cx)
 7616                    .remote_participants()
 7617                    .iter()
 7618                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7619                    .map(|(_, p)| p.peer_id)
 7620                    .or_else(|| {
 7621                        // If we couldn't follow the given user, follow the host instead.
 7622                        let collaborator = workspace
 7623                            .project()
 7624                            .read(cx)
 7625                            .collaborators()
 7626                            .values()
 7627                            .find(|collaborator| collaborator.is_host)?;
 7628                        Some(collaborator.peer_id)
 7629                    });
 7630
 7631                if let Some(follow_peer_id) = follow_peer_id {
 7632                    workspace.follow(follow_peer_id, window, cx);
 7633                }
 7634            }
 7635        })?;
 7636
 7637        anyhow::Ok(())
 7638    })
 7639}
 7640
 7641pub fn reload(cx: &mut App) {
 7642    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7643    let mut workspace_windows = cx
 7644        .windows()
 7645        .into_iter()
 7646        .filter_map(|window| window.downcast::<Workspace>())
 7647        .collect::<Vec<_>>();
 7648
 7649    // If multiple windows have unsaved changes, and need a save prompt,
 7650    // prompt in the active window before switching to a different window.
 7651    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7652
 7653    let mut prompt = None;
 7654    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7655        prompt = window
 7656            .update(cx, |_, window, cx| {
 7657                window.prompt(
 7658                    PromptLevel::Info,
 7659                    "Are you sure you want to restart?",
 7660                    None,
 7661                    &["Restart", "Cancel"],
 7662                    cx,
 7663                )
 7664            })
 7665            .ok();
 7666    }
 7667
 7668    cx.spawn(async move |cx| {
 7669        if let Some(prompt) = prompt {
 7670            let answer = prompt.await?;
 7671            if answer != 0 {
 7672                return Ok(());
 7673            }
 7674        }
 7675
 7676        // If the user cancels any save prompt, then keep the app open.
 7677        for window in workspace_windows {
 7678            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7679                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7680            }) && !should_close.await?
 7681            {
 7682                return Ok(());
 7683            }
 7684        }
 7685        cx.update(|cx| cx.restart())
 7686    })
 7687    .detach_and_log_err(cx);
 7688}
 7689
 7690fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7691    let mut parts = value.split(',');
 7692    let x: usize = parts.next()?.parse().ok()?;
 7693    let y: usize = parts.next()?.parse().ok()?;
 7694    Some(point(px(x as f32), px(y as f32)))
 7695}
 7696
 7697fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7698    let mut parts = value.split(',');
 7699    let width: usize = parts.next()?.parse().ok()?;
 7700    let height: usize = parts.next()?.parse().ok()?;
 7701    Some(size(px(width as f32), px(height as f32)))
 7702}
 7703
 7704/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7705pub fn client_side_decorations(
 7706    element: impl IntoElement,
 7707    window: &mut Window,
 7708    cx: &mut App,
 7709) -> Stateful<Div> {
 7710    const BORDER_SIZE: Pixels = px(1.0);
 7711    let decorations = window.window_decorations();
 7712
 7713    match decorations {
 7714        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7715        Decorations::Server => window.set_client_inset(px(0.0)),
 7716    }
 7717
 7718    struct GlobalResizeEdge(ResizeEdge);
 7719    impl Global for GlobalResizeEdge {}
 7720
 7721    div()
 7722        .id("window-backdrop")
 7723        .bg(transparent_black())
 7724        .map(|div| match decorations {
 7725            Decorations::Server => div,
 7726            Decorations::Client { tiling, .. } => div
 7727                .when(!(tiling.top || tiling.right), |div| {
 7728                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7729                })
 7730                .when(!(tiling.top || tiling.left), |div| {
 7731                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7732                })
 7733                .when(!(tiling.bottom || tiling.right), |div| {
 7734                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7735                })
 7736                .when(!(tiling.bottom || tiling.left), |div| {
 7737                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7738                })
 7739                .when(!tiling.top, |div| {
 7740                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7741                })
 7742                .when(!tiling.bottom, |div| {
 7743                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7744                })
 7745                .when(!tiling.left, |div| {
 7746                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7747                })
 7748                .when(!tiling.right, |div| {
 7749                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7750                })
 7751                .on_mouse_move(move |e, window, cx| {
 7752                    let size = window.window_bounds().get_bounds().size;
 7753                    let pos = e.position;
 7754
 7755                    let new_edge =
 7756                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7757
 7758                    let edge = cx.try_global::<GlobalResizeEdge>();
 7759                    if new_edge != edge.map(|edge| edge.0) {
 7760                        window
 7761                            .window_handle()
 7762                            .update(cx, |workspace, _, cx| {
 7763                                cx.notify(workspace.entity_id());
 7764                            })
 7765                            .ok();
 7766                    }
 7767                })
 7768                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7769                    let size = window.window_bounds().get_bounds().size;
 7770                    let pos = e.position;
 7771
 7772                    let edge = match resize_edge(
 7773                        pos,
 7774                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7775                        size,
 7776                        tiling,
 7777                    ) {
 7778                        Some(value) => value,
 7779                        None => return,
 7780                    };
 7781
 7782                    window.start_window_resize(edge);
 7783                }),
 7784        })
 7785        .size_full()
 7786        .child(
 7787            div()
 7788                .cursor(CursorStyle::Arrow)
 7789                .map(|div| match decorations {
 7790                    Decorations::Server => div,
 7791                    Decorations::Client { tiling } => div
 7792                        .border_color(cx.theme().colors().border)
 7793                        .when(!(tiling.top || tiling.right), |div| {
 7794                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7795                        })
 7796                        .when(!(tiling.top || tiling.left), |div| {
 7797                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7798                        })
 7799                        .when(!(tiling.bottom || tiling.right), |div| {
 7800                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7801                        })
 7802                        .when(!(tiling.bottom || tiling.left), |div| {
 7803                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7804                        })
 7805                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7806                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7807                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7808                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7809                        .when(!tiling.is_tiled(), |div| {
 7810                            div.shadow(vec![gpui::BoxShadow {
 7811                                color: Hsla {
 7812                                    h: 0.,
 7813                                    s: 0.,
 7814                                    l: 0.,
 7815                                    a: 0.4,
 7816                                },
 7817                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7818                                spread_radius: px(0.),
 7819                                offset: point(px(0.0), px(0.0)),
 7820                            }])
 7821                        }),
 7822                })
 7823                .on_mouse_move(|_e, _, cx| {
 7824                    cx.stop_propagation();
 7825                })
 7826                .size_full()
 7827                .child(element),
 7828        )
 7829        .map(|div| match decorations {
 7830            Decorations::Server => div,
 7831            Decorations::Client { tiling, .. } => div.child(
 7832                canvas(
 7833                    |_bounds, window, _| {
 7834                        window.insert_hitbox(
 7835                            Bounds::new(
 7836                                point(px(0.0), px(0.0)),
 7837                                window.window_bounds().get_bounds().size,
 7838                            ),
 7839                            HitboxBehavior::Normal,
 7840                        )
 7841                    },
 7842                    move |_bounds, hitbox, window, cx| {
 7843                        let mouse = window.mouse_position();
 7844                        let size = window.window_bounds().get_bounds().size;
 7845                        let Some(edge) =
 7846                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7847                        else {
 7848                            return;
 7849                        };
 7850                        cx.set_global(GlobalResizeEdge(edge));
 7851                        window.set_cursor_style(
 7852                            match edge {
 7853                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7854                                ResizeEdge::Left | ResizeEdge::Right => {
 7855                                    CursorStyle::ResizeLeftRight
 7856                                }
 7857                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7858                                    CursorStyle::ResizeUpLeftDownRight
 7859                                }
 7860                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7861                                    CursorStyle::ResizeUpRightDownLeft
 7862                                }
 7863                            },
 7864                            &hitbox,
 7865                        );
 7866                    },
 7867                )
 7868                .size_full()
 7869                .absolute(),
 7870            ),
 7871        })
 7872}
 7873
 7874fn resize_edge(
 7875    pos: Point<Pixels>,
 7876    shadow_size: Pixels,
 7877    window_size: Size<Pixels>,
 7878    tiling: Tiling,
 7879) -> Option<ResizeEdge> {
 7880    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7881    if bounds.contains(&pos) {
 7882        return None;
 7883    }
 7884
 7885    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7886    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7887    if !tiling.top && top_left_bounds.contains(&pos) {
 7888        return Some(ResizeEdge::TopLeft);
 7889    }
 7890
 7891    let top_right_bounds = Bounds::new(
 7892        Point::new(window_size.width - corner_size.width, px(0.)),
 7893        corner_size,
 7894    );
 7895    if !tiling.top && top_right_bounds.contains(&pos) {
 7896        return Some(ResizeEdge::TopRight);
 7897    }
 7898
 7899    let bottom_left_bounds = Bounds::new(
 7900        Point::new(px(0.), window_size.height - corner_size.height),
 7901        corner_size,
 7902    );
 7903    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7904        return Some(ResizeEdge::BottomLeft);
 7905    }
 7906
 7907    let bottom_right_bounds = Bounds::new(
 7908        Point::new(
 7909            window_size.width - corner_size.width,
 7910            window_size.height - corner_size.height,
 7911        ),
 7912        corner_size,
 7913    );
 7914    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7915        return Some(ResizeEdge::BottomRight);
 7916    }
 7917
 7918    if !tiling.top && pos.y < shadow_size {
 7919        Some(ResizeEdge::Top)
 7920    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7921        Some(ResizeEdge::Bottom)
 7922    } else if !tiling.left && pos.x < shadow_size {
 7923        Some(ResizeEdge::Left)
 7924    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7925        Some(ResizeEdge::Right)
 7926    } else {
 7927        None
 7928    }
 7929}
 7930
 7931fn join_pane_into_active(
 7932    active_pane: &Entity<Pane>,
 7933    pane: &Entity<Pane>,
 7934    window: &mut Window,
 7935    cx: &mut App,
 7936) {
 7937    if pane == active_pane {
 7938    } else if pane.read(cx).items_len() == 0 {
 7939        pane.update(cx, |_, cx| {
 7940            cx.emit(pane::Event::Remove {
 7941                focus_on_pane: None,
 7942            });
 7943        })
 7944    } else {
 7945        move_all_items(pane, active_pane, window, cx);
 7946    }
 7947}
 7948
 7949fn move_all_items(
 7950    from_pane: &Entity<Pane>,
 7951    to_pane: &Entity<Pane>,
 7952    window: &mut Window,
 7953    cx: &mut App,
 7954) {
 7955    let destination_is_different = from_pane != to_pane;
 7956    let mut moved_items = 0;
 7957    for (item_ix, item_handle) in from_pane
 7958        .read(cx)
 7959        .items()
 7960        .enumerate()
 7961        .map(|(ix, item)| (ix, item.clone()))
 7962        .collect::<Vec<_>>()
 7963    {
 7964        let ix = item_ix - moved_items;
 7965        if destination_is_different {
 7966            // Close item from previous pane
 7967            from_pane.update(cx, |source, cx| {
 7968                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7969            });
 7970            moved_items += 1;
 7971        }
 7972
 7973        // This automatically removes duplicate items in the pane
 7974        to_pane.update(cx, |destination, cx| {
 7975            destination.add_item(item_handle, true, true, None, window, cx);
 7976            window.focus(&destination.focus_handle(cx))
 7977        });
 7978    }
 7979}
 7980
 7981pub fn move_item(
 7982    source: &Entity<Pane>,
 7983    destination: &Entity<Pane>,
 7984    item_id_to_move: EntityId,
 7985    destination_index: usize,
 7986    activate: bool,
 7987    window: &mut Window,
 7988    cx: &mut App,
 7989) {
 7990    let Some((item_ix, item_handle)) = source
 7991        .read(cx)
 7992        .items()
 7993        .enumerate()
 7994        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7995        .map(|(ix, item)| (ix, item.clone()))
 7996    else {
 7997        // Tab was closed during drag
 7998        return;
 7999    };
 8000
 8001    if source != destination {
 8002        // Close item from previous pane
 8003        source.update(cx, |source, cx| {
 8004            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8005        });
 8006    }
 8007
 8008    // This automatically removes duplicate items in the pane
 8009    destination.update(cx, |destination, cx| {
 8010        destination.add_item_inner(
 8011            item_handle,
 8012            activate,
 8013            activate,
 8014            activate,
 8015            Some(destination_index),
 8016            window,
 8017            cx,
 8018        );
 8019        if activate {
 8020            window.focus(&destination.focus_handle(cx))
 8021        }
 8022    });
 8023}
 8024
 8025pub fn move_active_item(
 8026    source: &Entity<Pane>,
 8027    destination: &Entity<Pane>,
 8028    focus_destination: bool,
 8029    close_if_empty: bool,
 8030    window: &mut Window,
 8031    cx: &mut App,
 8032) {
 8033    if source == destination {
 8034        return;
 8035    }
 8036    let Some(active_item) = source.read(cx).active_item() else {
 8037        return;
 8038    };
 8039    source.update(cx, |source_pane, cx| {
 8040        let item_id = active_item.item_id();
 8041        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8042        destination.update(cx, |target_pane, cx| {
 8043            target_pane.add_item(
 8044                active_item,
 8045                focus_destination,
 8046                focus_destination,
 8047                Some(target_pane.items_len()),
 8048                window,
 8049                cx,
 8050            );
 8051        });
 8052    });
 8053}
 8054
 8055pub fn clone_active_item(
 8056    workspace_id: Option<WorkspaceId>,
 8057    source: &Entity<Pane>,
 8058    destination: &Entity<Pane>,
 8059    focus_destination: bool,
 8060    window: &mut Window,
 8061    cx: &mut App,
 8062) {
 8063    if source == destination {
 8064        return;
 8065    }
 8066    let Some(active_item) = source.read(cx).active_item() else {
 8067        return;
 8068    };
 8069    destination.update(cx, |target_pane, cx| {
 8070        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8071            return;
 8072        };
 8073        target_pane.add_item(
 8074            clone,
 8075            focus_destination,
 8076            focus_destination,
 8077            Some(target_pane.items_len()),
 8078            window,
 8079            cx,
 8080        );
 8081    });
 8082}
 8083
 8084#[derive(Debug)]
 8085pub struct WorkspacePosition {
 8086    pub window_bounds: Option<WindowBounds>,
 8087    pub display: Option<Uuid>,
 8088    pub centered_layout: bool,
 8089}
 8090
 8091pub fn ssh_workspace_position_from_db(
 8092    host: String,
 8093    port: Option<u16>,
 8094    user: Option<String>,
 8095    paths_to_open: &[PathBuf],
 8096    cx: &App,
 8097) -> Task<Result<WorkspacePosition>> {
 8098    let paths = paths_to_open
 8099        .iter()
 8100        .map(|path| path.to_string_lossy().to_string())
 8101        .collect::<Vec<_>>();
 8102
 8103    cx.background_spawn(async move {
 8104        let serialized_ssh_project = persistence::DB
 8105            .get_or_create_ssh_project(host, port, paths, user)
 8106            .await
 8107            .context("fetching serialized ssh project")?;
 8108        let serialized_workspace =
 8109            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8110
 8111        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8112            (Some(WindowBounds::Windowed(bounds)), None)
 8113        } else {
 8114            let restorable_bounds = serialized_workspace
 8115                .as_ref()
 8116                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8117                .or_else(|| {
 8118                    let (display, window_bounds) = DB.last_window().log_err()?;
 8119                    Some((display?, window_bounds?))
 8120                });
 8121
 8122            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8123                (Some(serialized_status.0), Some(serialized_display))
 8124            } else {
 8125                (None, None)
 8126            }
 8127        };
 8128
 8129        let centered_layout = serialized_workspace
 8130            .as_ref()
 8131            .map(|w| w.centered_layout)
 8132            .unwrap_or(false);
 8133
 8134        Ok(WorkspacePosition {
 8135            window_bounds,
 8136            display,
 8137            centered_layout,
 8138        })
 8139    })
 8140}
 8141
 8142pub fn with_active_or_new_workspace(
 8143    cx: &mut App,
 8144    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8145) {
 8146    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8147        Some(workspace) => {
 8148            cx.defer(move |cx| {
 8149                workspace
 8150                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8151                    .log_err();
 8152            });
 8153        }
 8154        None => {
 8155            let app_state = AppState::global(cx);
 8156            if let Some(app_state) = app_state.upgrade() {
 8157                open_new(
 8158                    OpenOptions::default(),
 8159                    app_state,
 8160                    cx,
 8161                    move |workspace, window, cx| f(workspace, window, cx),
 8162                )
 8163                .detach_and_log_err(cx);
 8164            }
 8165        }
 8166    }
 8167}
 8168
 8169#[cfg(test)]
 8170mod tests {
 8171    use std::{cell::RefCell, rc::Rc};
 8172
 8173    use super::*;
 8174    use crate::{
 8175        dock::{PanelEvent, test::TestPanel},
 8176        item::{
 8177            ItemEvent,
 8178            test::{TestItem, TestProjectItem},
 8179        },
 8180    };
 8181    use fs::FakeFs;
 8182    use gpui::{
 8183        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8184        UpdateGlobal, VisualTestContext, px,
 8185    };
 8186    use project::{Project, ProjectEntryId};
 8187    use serde_json::json;
 8188    use settings::SettingsStore;
 8189
 8190    #[gpui::test]
 8191    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8192        init_test(cx);
 8193
 8194        let fs = FakeFs::new(cx.executor());
 8195        let project = Project::test(fs, [], cx).await;
 8196        let (workspace, cx) =
 8197            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8198
 8199        // Adding an item with no ambiguity renders the tab without detail.
 8200        let item1 = cx.new(|cx| {
 8201            let mut item = TestItem::new(cx);
 8202            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8203            item
 8204        });
 8205        workspace.update_in(cx, |workspace, window, cx| {
 8206            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8207        });
 8208        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8209
 8210        // Adding an item that creates ambiguity increases the level of detail on
 8211        // both tabs.
 8212        let item2 = cx.new_window_entity(|_window, cx| {
 8213            let mut item = TestItem::new(cx);
 8214            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8215            item
 8216        });
 8217        workspace.update_in(cx, |workspace, window, cx| {
 8218            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8219        });
 8220        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8221        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8222
 8223        // Adding an item that creates ambiguity increases the level of detail only
 8224        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8225        // we stop at the highest detail available.
 8226        let item3 = cx.new(|cx| {
 8227            let mut item = TestItem::new(cx);
 8228            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8229            item
 8230        });
 8231        workspace.update_in(cx, |workspace, window, cx| {
 8232            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8233        });
 8234        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8235        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8236        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8237    }
 8238
 8239    #[gpui::test]
 8240    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8241        init_test(cx);
 8242
 8243        let fs = FakeFs::new(cx.executor());
 8244        fs.insert_tree(
 8245            "/root1",
 8246            json!({
 8247                "one.txt": "",
 8248                "two.txt": "",
 8249            }),
 8250        )
 8251        .await;
 8252        fs.insert_tree(
 8253            "/root2",
 8254            json!({
 8255                "three.txt": "",
 8256            }),
 8257        )
 8258        .await;
 8259
 8260        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8261        let (workspace, cx) =
 8262            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8263        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8264        let worktree_id = project.update(cx, |project, cx| {
 8265            project.worktrees(cx).next().unwrap().read(cx).id()
 8266        });
 8267
 8268        let item1 = cx.new(|cx| {
 8269            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8270        });
 8271        let item2 = cx.new(|cx| {
 8272            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8273        });
 8274
 8275        // Add an item to an empty pane
 8276        workspace.update_in(cx, |workspace, window, cx| {
 8277            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8278        });
 8279        project.update(cx, |project, cx| {
 8280            assert_eq!(
 8281                project.active_entry(),
 8282                project
 8283                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8284                    .map(|e| e.id)
 8285            );
 8286        });
 8287        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8288
 8289        // Add a second item to a non-empty pane
 8290        workspace.update_in(cx, |workspace, window, cx| {
 8291            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8292        });
 8293        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8294        project.update(cx, |project, cx| {
 8295            assert_eq!(
 8296                project.active_entry(),
 8297                project
 8298                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8299                    .map(|e| e.id)
 8300            );
 8301        });
 8302
 8303        // Close the active item
 8304        pane.update_in(cx, |pane, window, cx| {
 8305            pane.close_active_item(&Default::default(), window, cx)
 8306        })
 8307        .await
 8308        .unwrap();
 8309        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8310        project.update(cx, |project, cx| {
 8311            assert_eq!(
 8312                project.active_entry(),
 8313                project
 8314                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8315                    .map(|e| e.id)
 8316            );
 8317        });
 8318
 8319        // Add a project folder
 8320        project
 8321            .update(cx, |project, cx| {
 8322                project.find_or_create_worktree("root2", true, cx)
 8323            })
 8324            .await
 8325            .unwrap();
 8326        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8327
 8328        // Remove a project folder
 8329        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8330        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8331    }
 8332
 8333    #[gpui::test]
 8334    async fn test_close_window(cx: &mut TestAppContext) {
 8335        init_test(cx);
 8336
 8337        let fs = FakeFs::new(cx.executor());
 8338        fs.insert_tree("/root", json!({ "one": "" })).await;
 8339
 8340        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8341        let (workspace, cx) =
 8342            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8343
 8344        // When there are no dirty items, there's nothing to do.
 8345        let item1 = cx.new(TestItem::new);
 8346        workspace.update_in(cx, |w, window, cx| {
 8347            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8348        });
 8349        let task = workspace.update_in(cx, |w, window, cx| {
 8350            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8351        });
 8352        assert!(task.await.unwrap());
 8353
 8354        // When there are dirty untitled items, prompt to save each one. If the user
 8355        // cancels any prompt, then abort.
 8356        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8357        let item3 = cx.new(|cx| {
 8358            TestItem::new(cx)
 8359                .with_dirty(true)
 8360                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8361        });
 8362        workspace.update_in(cx, |w, window, cx| {
 8363            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8364            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8365        });
 8366        let task = workspace.update_in(cx, |w, window, cx| {
 8367            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8368        });
 8369        cx.executor().run_until_parked();
 8370        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8371        cx.executor().run_until_parked();
 8372        assert!(!cx.has_pending_prompt());
 8373        assert!(!task.await.unwrap());
 8374    }
 8375
 8376    #[gpui::test]
 8377    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8378        init_test(cx);
 8379
 8380        // Register TestItem as a serializable item
 8381        cx.update(|cx| {
 8382            register_serializable_item::<TestItem>(cx);
 8383        });
 8384
 8385        let fs = FakeFs::new(cx.executor());
 8386        fs.insert_tree("/root", json!({ "one": "" })).await;
 8387
 8388        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8389        let (workspace, cx) =
 8390            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8391
 8392        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8393        let item1 = cx.new(|cx| {
 8394            TestItem::new(cx)
 8395                .with_dirty(true)
 8396                .with_serialize(|| Some(Task::ready(Ok(()))))
 8397        });
 8398        let item2 = cx.new(|cx| {
 8399            TestItem::new(cx)
 8400                .with_dirty(true)
 8401                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8402                .with_serialize(|| Some(Task::ready(Ok(()))))
 8403        });
 8404        workspace.update_in(cx, |w, window, cx| {
 8405            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8406            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8407        });
 8408        let task = workspace.update_in(cx, |w, window, cx| {
 8409            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8410        });
 8411        assert!(task.await.unwrap());
 8412    }
 8413
 8414    #[gpui::test]
 8415    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8416        init_test(cx);
 8417
 8418        let fs = FakeFs::new(cx.executor());
 8419
 8420        let project = Project::test(fs, None, cx).await;
 8421        let (workspace, cx) =
 8422            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8423
 8424        let item1 = cx.new(|cx| {
 8425            TestItem::new(cx)
 8426                .with_dirty(true)
 8427                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8428        });
 8429        let item2 = cx.new(|cx| {
 8430            TestItem::new(cx)
 8431                .with_dirty(true)
 8432                .with_conflict(true)
 8433                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8434        });
 8435        let item3 = cx.new(|cx| {
 8436            TestItem::new(cx)
 8437                .with_dirty(true)
 8438                .with_conflict(true)
 8439                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8440        });
 8441        let item4 = cx.new(|cx| {
 8442            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8443                let project_item = TestProjectItem::new_untitled(cx);
 8444                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8445                project_item
 8446            }])
 8447        });
 8448        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8449            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8450            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8451            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8452            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8453            workspace.active_pane().clone()
 8454        });
 8455
 8456        let close_items = pane.update_in(cx, |pane, window, cx| {
 8457            pane.activate_item(1, true, true, window, cx);
 8458            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8459            let item1_id = item1.item_id();
 8460            let item3_id = item3.item_id();
 8461            let item4_id = item4.item_id();
 8462            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8463                [item1_id, item3_id, item4_id].contains(&id)
 8464            })
 8465        });
 8466        cx.executor().run_until_parked();
 8467
 8468        assert!(cx.has_pending_prompt());
 8469        cx.simulate_prompt_answer("Save all");
 8470
 8471        cx.executor().run_until_parked();
 8472
 8473        // Item 1 is saved. There's a prompt to save item 3.
 8474        pane.update(cx, |pane, cx| {
 8475            assert_eq!(item1.read(cx).save_count, 1);
 8476            assert_eq!(item1.read(cx).save_as_count, 0);
 8477            assert_eq!(item1.read(cx).reload_count, 0);
 8478            assert_eq!(pane.items_len(), 3);
 8479            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8480        });
 8481        assert!(cx.has_pending_prompt());
 8482
 8483        // Cancel saving item 3.
 8484        cx.simulate_prompt_answer("Discard");
 8485        cx.executor().run_until_parked();
 8486
 8487        // Item 3 is reloaded. There's a prompt to save item 4.
 8488        pane.update(cx, |pane, cx| {
 8489            assert_eq!(item3.read(cx).save_count, 0);
 8490            assert_eq!(item3.read(cx).save_as_count, 0);
 8491            assert_eq!(item3.read(cx).reload_count, 1);
 8492            assert_eq!(pane.items_len(), 2);
 8493            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8494        });
 8495
 8496        // There's a prompt for a path for item 4.
 8497        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8498        close_items.await.unwrap();
 8499
 8500        // The requested items are closed.
 8501        pane.update(cx, |pane, cx| {
 8502            assert_eq!(item4.read(cx).save_count, 0);
 8503            assert_eq!(item4.read(cx).save_as_count, 1);
 8504            assert_eq!(item4.read(cx).reload_count, 0);
 8505            assert_eq!(pane.items_len(), 1);
 8506            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8507        });
 8508    }
 8509
 8510    #[gpui::test]
 8511    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8512        init_test(cx);
 8513
 8514        let fs = FakeFs::new(cx.executor());
 8515        let project = Project::test(fs, [], cx).await;
 8516        let (workspace, cx) =
 8517            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8518
 8519        // Create several workspace items with single project entries, and two
 8520        // workspace items with multiple project entries.
 8521        let single_entry_items = (0..=4)
 8522            .map(|project_entry_id| {
 8523                cx.new(|cx| {
 8524                    TestItem::new(cx)
 8525                        .with_dirty(true)
 8526                        .with_project_items(&[dirty_project_item(
 8527                            project_entry_id,
 8528                            &format!("{project_entry_id}.txt"),
 8529                            cx,
 8530                        )])
 8531                })
 8532            })
 8533            .collect::<Vec<_>>();
 8534        let item_2_3 = cx.new(|cx| {
 8535            TestItem::new(cx)
 8536                .with_dirty(true)
 8537                .with_singleton(false)
 8538                .with_project_items(&[
 8539                    single_entry_items[2].read(cx).project_items[0].clone(),
 8540                    single_entry_items[3].read(cx).project_items[0].clone(),
 8541                ])
 8542        });
 8543        let item_3_4 = cx.new(|cx| {
 8544            TestItem::new(cx)
 8545                .with_dirty(true)
 8546                .with_singleton(false)
 8547                .with_project_items(&[
 8548                    single_entry_items[3].read(cx).project_items[0].clone(),
 8549                    single_entry_items[4].read(cx).project_items[0].clone(),
 8550                ])
 8551        });
 8552
 8553        // Create two panes that contain the following project entries:
 8554        //   left pane:
 8555        //     multi-entry items:   (2, 3)
 8556        //     single-entry items:  0, 2, 3, 4
 8557        //   right pane:
 8558        //     single-entry items:  4, 1
 8559        //     multi-entry items:   (3, 4)
 8560        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8561            let left_pane = workspace.active_pane().clone();
 8562            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8563            workspace.add_item_to_active_pane(
 8564                single_entry_items[0].boxed_clone(),
 8565                None,
 8566                true,
 8567                window,
 8568                cx,
 8569            );
 8570            workspace.add_item_to_active_pane(
 8571                single_entry_items[2].boxed_clone(),
 8572                None,
 8573                true,
 8574                window,
 8575                cx,
 8576            );
 8577            workspace.add_item_to_active_pane(
 8578                single_entry_items[3].boxed_clone(),
 8579                None,
 8580                true,
 8581                window,
 8582                cx,
 8583            );
 8584            workspace.add_item_to_active_pane(
 8585                single_entry_items[4].boxed_clone(),
 8586                None,
 8587                true,
 8588                window,
 8589                cx,
 8590            );
 8591
 8592            let right_pane = workspace
 8593                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8594                .unwrap();
 8595
 8596            right_pane.update(cx, |pane, cx| {
 8597                pane.add_item(
 8598                    single_entry_items[1].boxed_clone(),
 8599                    true,
 8600                    true,
 8601                    None,
 8602                    window,
 8603                    cx,
 8604                );
 8605                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8606            });
 8607
 8608            (left_pane, right_pane)
 8609        });
 8610
 8611        cx.focus(&right_pane);
 8612
 8613        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8614            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8615                .unwrap()
 8616        });
 8617        cx.executor().run_until_parked();
 8618
 8619        let msg = cx.pending_prompt().unwrap().0;
 8620        assert!(msg.contains("1.txt"));
 8621        assert!(!msg.contains("2.txt"));
 8622        assert!(!msg.contains("3.txt"));
 8623        assert!(!msg.contains("4.txt"));
 8624
 8625        cx.simulate_prompt_answer("Cancel");
 8626        close.await;
 8627
 8628        left_pane
 8629            .update_in(cx, |left_pane, window, cx| {
 8630                left_pane.close_item_by_id(
 8631                    single_entry_items[3].entity_id(),
 8632                    SaveIntent::Skip,
 8633                    window,
 8634                    cx,
 8635                )
 8636            })
 8637            .await
 8638            .unwrap();
 8639
 8640        close = right_pane.update_in(cx, |pane, window, cx| {
 8641            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8642                .unwrap()
 8643        });
 8644        cx.executor().run_until_parked();
 8645
 8646        let details = cx.pending_prompt().unwrap().1;
 8647        assert!(details.contains("1.txt"));
 8648        assert!(!details.contains("2.txt"));
 8649        assert!(details.contains("3.txt"));
 8650        // ideally this assertion could be made, but today we can only
 8651        // save whole items not project items, so the orphaned item 3 causes
 8652        // 4 to be saved too.
 8653        // assert!(!details.contains("4.txt"));
 8654
 8655        cx.simulate_prompt_answer("Save all");
 8656
 8657        cx.executor().run_until_parked();
 8658        close.await;
 8659        right_pane.read_with(cx, |pane, _| {
 8660            assert_eq!(pane.items_len(), 0);
 8661        });
 8662    }
 8663
 8664    #[gpui::test]
 8665    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8666        init_test(cx);
 8667
 8668        let fs = FakeFs::new(cx.executor());
 8669        let project = Project::test(fs, [], cx).await;
 8670        let (workspace, cx) =
 8671            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8672        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8673
 8674        let item = cx.new(|cx| {
 8675            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8676        });
 8677        let item_id = item.entity_id();
 8678        workspace.update_in(cx, |workspace, window, cx| {
 8679            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8680        });
 8681
 8682        // Autosave on window change.
 8683        item.update(cx, |item, cx| {
 8684            SettingsStore::update_global(cx, |settings, cx| {
 8685                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8686                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8687                })
 8688            });
 8689            item.is_dirty = true;
 8690        });
 8691
 8692        // Deactivating the window saves the file.
 8693        cx.deactivate_window();
 8694        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8695
 8696        // Re-activating the window doesn't save the file.
 8697        cx.update(|window, _| window.activate_window());
 8698        cx.executor().run_until_parked();
 8699        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8700
 8701        // Autosave on focus change.
 8702        item.update_in(cx, |item, window, cx| {
 8703            cx.focus_self(window);
 8704            SettingsStore::update_global(cx, |settings, cx| {
 8705                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8706                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8707                })
 8708            });
 8709            item.is_dirty = true;
 8710        });
 8711
 8712        // Blurring the item saves the file.
 8713        item.update_in(cx, |_, window, _| window.blur());
 8714        cx.executor().run_until_parked();
 8715        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8716
 8717        // Deactivating the window still saves the file.
 8718        item.update_in(cx, |item, window, cx| {
 8719            cx.focus_self(window);
 8720            item.is_dirty = true;
 8721        });
 8722        cx.deactivate_window();
 8723        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8724
 8725        // Autosave after delay.
 8726        item.update(cx, |item, cx| {
 8727            SettingsStore::update_global(cx, |settings, cx| {
 8728                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8729                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8730                })
 8731            });
 8732            item.is_dirty = true;
 8733            cx.emit(ItemEvent::Edit);
 8734        });
 8735
 8736        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8737        cx.executor().advance_clock(Duration::from_millis(250));
 8738        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8739
 8740        // After delay expires, the file is saved.
 8741        cx.executor().advance_clock(Duration::from_millis(250));
 8742        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8743
 8744        // Autosave on focus change, ensuring closing the tab counts as such.
 8745        item.update(cx, |item, cx| {
 8746            SettingsStore::update_global(cx, |settings, cx| {
 8747                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8748                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8749                })
 8750            });
 8751            item.is_dirty = true;
 8752            for project_item in &mut item.project_items {
 8753                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8754            }
 8755        });
 8756
 8757        pane.update_in(cx, |pane, window, cx| {
 8758            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8759        })
 8760        .await
 8761        .unwrap();
 8762        assert!(!cx.has_pending_prompt());
 8763        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8764
 8765        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8766        workspace.update_in(cx, |workspace, window, cx| {
 8767            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8768        });
 8769        item.update_in(cx, |item, window, cx| {
 8770            item.project_items[0].update(cx, |item, _| {
 8771                item.entry_id = None;
 8772            });
 8773            item.is_dirty = true;
 8774            window.blur();
 8775        });
 8776        cx.run_until_parked();
 8777        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8778
 8779        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8780        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8781            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8782        });
 8783        cx.run_until_parked();
 8784        assert!(cx.has_pending_prompt());
 8785        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8786    }
 8787
 8788    #[gpui::test]
 8789    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8790        init_test(cx);
 8791
 8792        let fs = FakeFs::new(cx.executor());
 8793
 8794        let project = Project::test(fs, [], cx).await;
 8795        let (workspace, cx) =
 8796            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8797
 8798        let item = cx.new(|cx| {
 8799            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8800        });
 8801        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8802        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8803        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8804
 8805        workspace.update_in(cx, |workspace, window, cx| {
 8806            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8807            let toolbar_notification_count = toolbar_notify_count.clone();
 8808            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8809                *toolbar_notification_count.borrow_mut() += 1
 8810            })
 8811            .detach();
 8812        });
 8813
 8814        pane.read_with(cx, |pane, _| {
 8815            assert!(!pane.can_navigate_backward());
 8816            assert!(!pane.can_navigate_forward());
 8817        });
 8818
 8819        item.update_in(cx, |item, _, cx| {
 8820            item.set_state("one".to_string(), cx);
 8821        });
 8822
 8823        // Toolbar must be notified to re-render the navigation buttons
 8824        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8825
 8826        pane.read_with(cx, |pane, _| {
 8827            assert!(pane.can_navigate_backward());
 8828            assert!(!pane.can_navigate_forward());
 8829        });
 8830
 8831        workspace
 8832            .update_in(cx, |workspace, window, cx| {
 8833                workspace.go_back(pane.downgrade(), window, cx)
 8834            })
 8835            .await
 8836            .unwrap();
 8837
 8838        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8839        pane.read_with(cx, |pane, _| {
 8840            assert!(!pane.can_navigate_backward());
 8841            assert!(pane.can_navigate_forward());
 8842        });
 8843    }
 8844
 8845    #[gpui::test]
 8846    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8847        init_test(cx);
 8848        let fs = FakeFs::new(cx.executor());
 8849
 8850        let project = Project::test(fs, [], cx).await;
 8851        let (workspace, cx) =
 8852            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8853
 8854        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8855            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8856            workspace.add_panel(panel.clone(), window, cx);
 8857
 8858            workspace
 8859                .right_dock()
 8860                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8861
 8862            panel
 8863        });
 8864
 8865        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8866        pane.update_in(cx, |pane, window, cx| {
 8867            let item = cx.new(TestItem::new);
 8868            pane.add_item(Box::new(item), true, true, None, window, cx);
 8869        });
 8870
 8871        // Transfer focus from center to panel
 8872        workspace.update_in(cx, |workspace, window, cx| {
 8873            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8874        });
 8875
 8876        workspace.update_in(cx, |workspace, window, cx| {
 8877            assert!(workspace.right_dock().read(cx).is_open());
 8878            assert!(!panel.is_zoomed(window, cx));
 8879            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8880        });
 8881
 8882        // Transfer focus from panel to center
 8883        workspace.update_in(cx, |workspace, window, cx| {
 8884            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8885        });
 8886
 8887        workspace.update_in(cx, |workspace, window, cx| {
 8888            assert!(workspace.right_dock().read(cx).is_open());
 8889            assert!(!panel.is_zoomed(window, cx));
 8890            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8891        });
 8892
 8893        // Close the dock
 8894        workspace.update_in(cx, |workspace, window, cx| {
 8895            workspace.toggle_dock(DockPosition::Right, window, cx);
 8896        });
 8897
 8898        workspace.update_in(cx, |workspace, window, cx| {
 8899            assert!(!workspace.right_dock().read(cx).is_open());
 8900            assert!(!panel.is_zoomed(window, cx));
 8901            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8902        });
 8903
 8904        // Open the dock
 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!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8913        });
 8914
 8915        // Focus and zoom panel
 8916        panel.update_in(cx, |panel, window, cx| {
 8917            cx.focus_self(window);
 8918            panel.set_zoomed(true, window, cx)
 8919        });
 8920
 8921        workspace.update_in(cx, |workspace, window, cx| {
 8922            assert!(workspace.right_dock().read(cx).is_open());
 8923            assert!(panel.is_zoomed(window, cx));
 8924            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8925        });
 8926
 8927        // Transfer focus to the center closes the dock
 8928        workspace.update_in(cx, |workspace, window, cx| {
 8929            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8930        });
 8931
 8932        workspace.update_in(cx, |workspace, window, cx| {
 8933            assert!(!workspace.right_dock().read(cx).is_open());
 8934            assert!(panel.is_zoomed(window, cx));
 8935            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8936        });
 8937
 8938        // Transferring focus back to the panel keeps it zoomed
 8939        workspace.update_in(cx, |workspace, window, cx| {
 8940            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8941        });
 8942
 8943        workspace.update_in(cx, |workspace, window, cx| {
 8944            assert!(workspace.right_dock().read(cx).is_open());
 8945            assert!(panel.is_zoomed(window, cx));
 8946            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8947        });
 8948
 8949        // Close the dock while it is zoomed
 8950        workspace.update_in(cx, |workspace, window, cx| {
 8951            workspace.toggle_dock(DockPosition::Right, window, cx)
 8952        });
 8953
 8954        workspace.update_in(cx, |workspace, window, cx| {
 8955            assert!(!workspace.right_dock().read(cx).is_open());
 8956            assert!(panel.is_zoomed(window, cx));
 8957            assert!(workspace.zoomed.is_none());
 8958            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8959        });
 8960
 8961        // Opening the dock, when it's zoomed, retains focus
 8962        workspace.update_in(cx, |workspace, window, cx| {
 8963            workspace.toggle_dock(DockPosition::Right, window, cx)
 8964        });
 8965
 8966        workspace.update_in(cx, |workspace, window, cx| {
 8967            assert!(workspace.right_dock().read(cx).is_open());
 8968            assert!(panel.is_zoomed(window, cx));
 8969            assert!(workspace.zoomed.is_some());
 8970            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8971        });
 8972
 8973        // Unzoom and close the panel, zoom the active pane.
 8974        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8975        workspace.update_in(cx, |workspace, window, cx| {
 8976            workspace.toggle_dock(DockPosition::Right, window, cx)
 8977        });
 8978        pane.update_in(cx, |pane, window, cx| {
 8979            pane.toggle_zoom(&Default::default(), window, cx)
 8980        });
 8981
 8982        // Opening a dock unzooms the pane.
 8983        workspace.update_in(cx, |workspace, window, cx| {
 8984            workspace.toggle_dock(DockPosition::Right, window, cx)
 8985        });
 8986        workspace.update_in(cx, |workspace, window, cx| {
 8987            let pane = pane.read(cx);
 8988            assert!(!pane.is_zoomed());
 8989            assert!(!pane.focus_handle(cx).is_focused(window));
 8990            assert!(workspace.right_dock().read(cx).is_open());
 8991            assert!(workspace.zoomed.is_none());
 8992        });
 8993    }
 8994
 8995    #[gpui::test]
 8996    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8997        init_test(cx);
 8998
 8999        let fs = FakeFs::new(cx.executor());
 9000
 9001        let project = Project::test(fs, None, cx).await;
 9002        let (workspace, cx) =
 9003            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9004
 9005        // Let's arrange the panes like this:
 9006        //
 9007        // +-----------------------+
 9008        // |         top           |
 9009        // +------+--------+-------+
 9010        // | left | center | right |
 9011        // +------+--------+-------+
 9012        // |        bottom         |
 9013        // +-----------------------+
 9014
 9015        let top_item = cx.new(|cx| {
 9016            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9017        });
 9018        let bottom_item = cx.new(|cx| {
 9019            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9020        });
 9021        let left_item = cx.new(|cx| {
 9022            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9023        });
 9024        let right_item = cx.new(|cx| {
 9025            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9026        });
 9027        let center_item = cx.new(|cx| {
 9028            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9029        });
 9030
 9031        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9032            let top_pane_id = workspace.active_pane().entity_id();
 9033            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9034            workspace.split_pane(
 9035                workspace.active_pane().clone(),
 9036                SplitDirection::Down,
 9037                window,
 9038                cx,
 9039            );
 9040            top_pane_id
 9041        });
 9042        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9043            let bottom_pane_id = workspace.active_pane().entity_id();
 9044            workspace.add_item_to_active_pane(
 9045                Box::new(bottom_item.clone()),
 9046                None,
 9047                false,
 9048                window,
 9049                cx,
 9050            );
 9051            workspace.split_pane(
 9052                workspace.active_pane().clone(),
 9053                SplitDirection::Up,
 9054                window,
 9055                cx,
 9056            );
 9057            bottom_pane_id
 9058        });
 9059        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9060            let left_pane_id = workspace.active_pane().entity_id();
 9061            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9062            workspace.split_pane(
 9063                workspace.active_pane().clone(),
 9064                SplitDirection::Right,
 9065                window,
 9066                cx,
 9067            );
 9068            left_pane_id
 9069        });
 9070        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9071            let right_pane_id = workspace.active_pane().entity_id();
 9072            workspace.add_item_to_active_pane(
 9073                Box::new(right_item.clone()),
 9074                None,
 9075                false,
 9076                window,
 9077                cx,
 9078            );
 9079            workspace.split_pane(
 9080                workspace.active_pane().clone(),
 9081                SplitDirection::Left,
 9082                window,
 9083                cx,
 9084            );
 9085            right_pane_id
 9086        });
 9087        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9088            let center_pane_id = workspace.active_pane().entity_id();
 9089            workspace.add_item_to_active_pane(
 9090                Box::new(center_item.clone()),
 9091                None,
 9092                false,
 9093                window,
 9094                cx,
 9095            );
 9096            center_pane_id
 9097        });
 9098        cx.executor().run_until_parked();
 9099
 9100        workspace.update_in(cx, |workspace, window, cx| {
 9101            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9102
 9103            // Join into next from center pane into right
 9104            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9105        });
 9106
 9107        workspace.update_in(cx, |workspace, window, cx| {
 9108            let active_pane = workspace.active_pane();
 9109            assert_eq!(right_pane_id, active_pane.entity_id());
 9110            assert_eq!(2, active_pane.read(cx).items_len());
 9111            let item_ids_in_pane =
 9112                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9113            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9114            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9115
 9116            // Join into next from right pane into bottom
 9117            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9118        });
 9119
 9120        workspace.update_in(cx, |workspace, window, cx| {
 9121            let active_pane = workspace.active_pane();
 9122            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9123            assert_eq!(3, active_pane.read(cx).items_len());
 9124            let item_ids_in_pane =
 9125                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9126            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9127            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9128            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9129
 9130            // Join into next from bottom pane into left
 9131            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9132        });
 9133
 9134        workspace.update_in(cx, |workspace, window, cx| {
 9135            let active_pane = workspace.active_pane();
 9136            assert_eq!(left_pane_id, active_pane.entity_id());
 9137            assert_eq!(4, active_pane.read(cx).items_len());
 9138            let item_ids_in_pane =
 9139                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9140            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9141            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9142            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9143            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9144
 9145            // Join into next from left pane into top
 9146            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9147        });
 9148
 9149        workspace.update_in(cx, |workspace, window, cx| {
 9150            let active_pane = workspace.active_pane();
 9151            assert_eq!(top_pane_id, active_pane.entity_id());
 9152            assert_eq!(5, active_pane.read(cx).items_len());
 9153            let item_ids_in_pane =
 9154                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9155            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9156            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9157            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9158            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9159            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9160
 9161            // Single pane left: no-op
 9162            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9163        });
 9164
 9165        workspace.update(cx, |workspace, _cx| {
 9166            let active_pane = workspace.active_pane();
 9167            assert_eq!(top_pane_id, active_pane.entity_id());
 9168        });
 9169    }
 9170
 9171    fn add_an_item_to_active_pane(
 9172        cx: &mut VisualTestContext,
 9173        workspace: &Entity<Workspace>,
 9174        item_id: u64,
 9175    ) -> Entity<TestItem> {
 9176        let item = cx.new(|cx| {
 9177            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9178                item_id,
 9179                "item{item_id}.txt",
 9180                cx,
 9181            )])
 9182        });
 9183        workspace.update_in(cx, |workspace, window, cx| {
 9184            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9185        });
 9186        item
 9187    }
 9188
 9189    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9190        workspace.update_in(cx, |workspace, window, cx| {
 9191            workspace.split_pane(
 9192                workspace.active_pane().clone(),
 9193                SplitDirection::Right,
 9194                window,
 9195                cx,
 9196            )
 9197        })
 9198    }
 9199
 9200    #[gpui::test]
 9201    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9202        init_test(cx);
 9203        let fs = FakeFs::new(cx.executor());
 9204        let project = Project::test(fs, None, cx).await;
 9205        let (workspace, cx) =
 9206            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9207
 9208        add_an_item_to_active_pane(cx, &workspace, 1);
 9209        split_pane(cx, &workspace);
 9210        add_an_item_to_active_pane(cx, &workspace, 2);
 9211        split_pane(cx, &workspace); // empty pane
 9212        split_pane(cx, &workspace);
 9213        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9214
 9215        cx.executor().run_until_parked();
 9216
 9217        workspace.update(cx, |workspace, cx| {
 9218            let num_panes = workspace.panes().len();
 9219            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9220            let active_item = workspace
 9221                .active_pane()
 9222                .read(cx)
 9223                .active_item()
 9224                .expect("item is in focus");
 9225
 9226            assert_eq!(num_panes, 4);
 9227            assert_eq!(num_items_in_current_pane, 1);
 9228            assert_eq!(active_item.item_id(), last_item.item_id());
 9229        });
 9230
 9231        workspace.update_in(cx, |workspace, window, cx| {
 9232            workspace.join_all_panes(window, cx);
 9233        });
 9234
 9235        workspace.update(cx, |workspace, cx| {
 9236            let num_panes = workspace.panes().len();
 9237            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9238            let active_item = workspace
 9239                .active_pane()
 9240                .read(cx)
 9241                .active_item()
 9242                .expect("item is in focus");
 9243
 9244            assert_eq!(num_panes, 1);
 9245            assert_eq!(num_items_in_current_pane, 3);
 9246            assert_eq!(active_item.item_id(), last_item.item_id());
 9247        });
 9248    }
 9249    struct TestModal(FocusHandle);
 9250
 9251    impl TestModal {
 9252        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9253            Self(cx.focus_handle())
 9254        }
 9255    }
 9256
 9257    impl EventEmitter<DismissEvent> for TestModal {}
 9258
 9259    impl Focusable for TestModal {
 9260        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9261            self.0.clone()
 9262        }
 9263    }
 9264
 9265    impl ModalView for TestModal {}
 9266
 9267    impl Render for TestModal {
 9268        fn render(
 9269            &mut self,
 9270            _window: &mut Window,
 9271            _cx: &mut Context<TestModal>,
 9272        ) -> impl IntoElement {
 9273            div().track_focus(&self.0)
 9274        }
 9275    }
 9276
 9277    #[gpui::test]
 9278    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9279        init_test(cx);
 9280        let fs = FakeFs::new(cx.executor());
 9281
 9282        let project = Project::test(fs, [], cx).await;
 9283        let (workspace, cx) =
 9284            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9285
 9286        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9287            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9288            workspace.add_panel(panel_1.clone(), window, cx);
 9289            workspace.toggle_dock(DockPosition::Left, window, cx);
 9290            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9291            workspace.add_panel(panel_2.clone(), window, cx);
 9292            workspace.toggle_dock(DockPosition::Right, window, cx);
 9293
 9294            let left_dock = workspace.left_dock();
 9295            assert_eq!(
 9296                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9297                panel_1.panel_id()
 9298            );
 9299            assert_eq!(
 9300                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9301                panel_1.size(window, cx)
 9302            );
 9303
 9304            left_dock.update(cx, |left_dock, cx| {
 9305                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9306            });
 9307            assert_eq!(
 9308                workspace
 9309                    .right_dock()
 9310                    .read(cx)
 9311                    .visible_panel()
 9312                    .unwrap()
 9313                    .panel_id(),
 9314                panel_2.panel_id(),
 9315            );
 9316
 9317            (panel_1, panel_2)
 9318        });
 9319
 9320        // Move panel_1 to the right
 9321        panel_1.update_in(cx, |panel_1, window, cx| {
 9322            panel_1.set_position(DockPosition::Right, window, cx)
 9323        });
 9324
 9325        workspace.update_in(cx, |workspace, window, cx| {
 9326            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9327            // Since it was the only panel on the left, the left dock should now be closed.
 9328            assert!(!workspace.left_dock().read(cx).is_open());
 9329            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9330            let right_dock = workspace.right_dock();
 9331            assert_eq!(
 9332                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9333                panel_1.panel_id()
 9334            );
 9335            assert_eq!(
 9336                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9337                px(1337.)
 9338            );
 9339
 9340            // Now we move panel_2 to the left
 9341            panel_2.set_position(DockPosition::Left, window, cx);
 9342        });
 9343
 9344        workspace.update(cx, |workspace, cx| {
 9345            // Since panel_2 was not visible on the right, we don't open the left dock.
 9346            assert!(!workspace.left_dock().read(cx).is_open());
 9347            // And the right dock is unaffected in its displaying of panel_1
 9348            assert!(workspace.right_dock().read(cx).is_open());
 9349            assert_eq!(
 9350                workspace
 9351                    .right_dock()
 9352                    .read(cx)
 9353                    .visible_panel()
 9354                    .unwrap()
 9355                    .panel_id(),
 9356                panel_1.panel_id(),
 9357            );
 9358        });
 9359
 9360        // Move panel_1 back to the left
 9361        panel_1.update_in(cx, |panel_1, window, cx| {
 9362            panel_1.set_position(DockPosition::Left, window, cx)
 9363        });
 9364
 9365        workspace.update_in(cx, |workspace, window, cx| {
 9366            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9367            let left_dock = workspace.left_dock();
 9368            assert!(left_dock.read(cx).is_open());
 9369            assert_eq!(
 9370                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9371                panel_1.panel_id()
 9372            );
 9373            assert_eq!(
 9374                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9375                px(1337.)
 9376            );
 9377            // And the right dock should be closed as it no longer has any panels.
 9378            assert!(!workspace.right_dock().read(cx).is_open());
 9379
 9380            // Now we move panel_1 to the bottom
 9381            panel_1.set_position(DockPosition::Bottom, window, cx);
 9382        });
 9383
 9384        workspace.update_in(cx, |workspace, window, cx| {
 9385            // Since panel_1 was visible on the left, we close the left dock.
 9386            assert!(!workspace.left_dock().read(cx).is_open());
 9387            // The bottom dock is sized based on the panel's default size,
 9388            // since the panel orientation changed from vertical to horizontal.
 9389            let bottom_dock = workspace.bottom_dock();
 9390            assert_eq!(
 9391                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9392                panel_1.size(window, cx),
 9393            );
 9394            // Close bottom dock and move panel_1 back to the left.
 9395            bottom_dock.update(cx, |bottom_dock, cx| {
 9396                bottom_dock.set_open(false, window, cx)
 9397            });
 9398            panel_1.set_position(DockPosition::Left, window, cx);
 9399        });
 9400
 9401        // Emit activated event on panel 1
 9402        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9403
 9404        // Now the left dock is open and panel_1 is active and focused.
 9405        workspace.update_in(cx, |workspace, window, cx| {
 9406            let left_dock = workspace.left_dock();
 9407            assert!(left_dock.read(cx).is_open());
 9408            assert_eq!(
 9409                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9410                panel_1.panel_id(),
 9411            );
 9412            assert!(panel_1.focus_handle(cx).is_focused(window));
 9413        });
 9414
 9415        // Emit closed event on panel 2, which is not active
 9416        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9417
 9418        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9419        workspace.update(cx, |workspace, cx| {
 9420            let left_dock = workspace.left_dock();
 9421            assert!(left_dock.read(cx).is_open());
 9422            assert_eq!(
 9423                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9424                panel_1.panel_id(),
 9425            );
 9426        });
 9427
 9428        // Emitting a ZoomIn event shows the panel as zoomed.
 9429        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9430        workspace.read_with(cx, |workspace, _| {
 9431            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9432            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9433        });
 9434
 9435        // Move panel to another dock while it is zoomed
 9436        panel_1.update_in(cx, |panel, window, cx| {
 9437            panel.set_position(DockPosition::Right, window, cx)
 9438        });
 9439        workspace.read_with(cx, |workspace, _| {
 9440            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9441
 9442            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9443        });
 9444
 9445        // This is a helper for getting a:
 9446        // - valid focus on an element,
 9447        // - that isn't a part of the panes and panels system of the Workspace,
 9448        // - and doesn't trigger the 'on_focus_lost' API.
 9449        let focus_other_view = {
 9450            let workspace = workspace.clone();
 9451            move |cx: &mut VisualTestContext| {
 9452                workspace.update_in(cx, |workspace, window, cx| {
 9453                    if workspace.active_modal::<TestModal>(cx).is_some() {
 9454                        workspace.toggle_modal(window, cx, TestModal::new);
 9455                        workspace.toggle_modal(window, cx, TestModal::new);
 9456                    } else {
 9457                        workspace.toggle_modal(window, cx, TestModal::new);
 9458                    }
 9459                })
 9460            }
 9461        };
 9462
 9463        // If focus is transferred to another view that's not a panel or another pane, we still show
 9464        // the panel as zoomed.
 9465        focus_other_view(cx);
 9466        workspace.read_with(cx, |workspace, _| {
 9467            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9468            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9469        });
 9470
 9471        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9472        workspace.update_in(cx, |_workspace, window, cx| {
 9473            cx.focus_self(window);
 9474        });
 9475        workspace.read_with(cx, |workspace, _| {
 9476            assert_eq!(workspace.zoomed, None);
 9477            assert_eq!(workspace.zoomed_position, None);
 9478        });
 9479
 9480        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9481        // show the panel as zoomed because it wasn't zoomed before.
 9482        focus_other_view(cx);
 9483        workspace.read_with(cx, |workspace, _| {
 9484            assert_eq!(workspace.zoomed, None);
 9485            assert_eq!(workspace.zoomed_position, None);
 9486        });
 9487
 9488        // When the panel is activated, it is zoomed again.
 9489        cx.dispatch_action(ToggleRightDock);
 9490        workspace.read_with(cx, |workspace, _| {
 9491            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9492            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9493        });
 9494
 9495        // Emitting a ZoomOut event unzooms the panel.
 9496        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9497        workspace.read_with(cx, |workspace, _| {
 9498            assert_eq!(workspace.zoomed, None);
 9499            assert_eq!(workspace.zoomed_position, None);
 9500        });
 9501
 9502        // Emit closed event on panel 1, which is active
 9503        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9504
 9505        // Now the left dock is closed, because panel_1 was the active panel
 9506        workspace.update(cx, |workspace, cx| {
 9507            let right_dock = workspace.right_dock();
 9508            assert!(!right_dock.read(cx).is_open());
 9509        });
 9510    }
 9511
 9512    #[gpui::test]
 9513    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9514        init_test(cx);
 9515
 9516        let fs = FakeFs::new(cx.background_executor.clone());
 9517        let project = Project::test(fs, [], cx).await;
 9518        let (workspace, cx) =
 9519            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9520        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9521
 9522        let dirty_regular_buffer = cx.new(|cx| {
 9523            TestItem::new(cx)
 9524                .with_dirty(true)
 9525                .with_label("1.txt")
 9526                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9527        });
 9528        let dirty_regular_buffer_2 = cx.new(|cx| {
 9529            TestItem::new(cx)
 9530                .with_dirty(true)
 9531                .with_label("2.txt")
 9532                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9533        });
 9534        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9535            TestItem::new(cx)
 9536                .with_dirty(true)
 9537                .with_singleton(false)
 9538                .with_label("Fake Project Search")
 9539                .with_project_items(&[
 9540                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9541                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9542                ])
 9543        });
 9544        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9545        workspace.update_in(cx, |workspace, window, cx| {
 9546            workspace.add_item(
 9547                pane.clone(),
 9548                Box::new(dirty_regular_buffer.clone()),
 9549                None,
 9550                false,
 9551                false,
 9552                window,
 9553                cx,
 9554            );
 9555            workspace.add_item(
 9556                pane.clone(),
 9557                Box::new(dirty_regular_buffer_2.clone()),
 9558                None,
 9559                false,
 9560                false,
 9561                window,
 9562                cx,
 9563            );
 9564            workspace.add_item(
 9565                pane.clone(),
 9566                Box::new(dirty_multi_buffer_with_both.clone()),
 9567                None,
 9568                false,
 9569                false,
 9570                window,
 9571                cx,
 9572            );
 9573        });
 9574
 9575        pane.update_in(cx, |pane, window, cx| {
 9576            pane.activate_item(2, true, true, window, cx);
 9577            assert_eq!(
 9578                pane.active_item().unwrap().item_id(),
 9579                multi_buffer_with_both_files_id,
 9580                "Should select the multi buffer in the pane"
 9581            );
 9582        });
 9583        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9584            pane.close_other_items(
 9585                &CloseOtherItems {
 9586                    save_intent: Some(SaveIntent::Save),
 9587                    close_pinned: true,
 9588                },
 9589                None,
 9590                window,
 9591                cx,
 9592            )
 9593        });
 9594        cx.background_executor.run_until_parked();
 9595        assert!(!cx.has_pending_prompt());
 9596        close_all_but_multi_buffer_task
 9597            .await
 9598            .expect("Closing all buffers but the multi buffer failed");
 9599        pane.update(cx, |pane, cx| {
 9600            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9601            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9602            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9603            assert_eq!(pane.items_len(), 1);
 9604            assert_eq!(
 9605                pane.active_item().unwrap().item_id(),
 9606                multi_buffer_with_both_files_id,
 9607                "Should have only the multi buffer left in the pane"
 9608            );
 9609            assert!(
 9610                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9611                "The multi buffer containing the unsaved buffer should still be dirty"
 9612            );
 9613        });
 9614
 9615        dirty_regular_buffer.update(cx, |buffer, cx| {
 9616            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9617        });
 9618
 9619        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9620            pane.close_active_item(
 9621                &CloseActiveItem {
 9622                    save_intent: Some(SaveIntent::Close),
 9623                    close_pinned: false,
 9624                },
 9625                window,
 9626                cx,
 9627            )
 9628        });
 9629        cx.background_executor.run_until_parked();
 9630        assert!(
 9631            cx.has_pending_prompt(),
 9632            "Dirty multi buffer should prompt a save dialog"
 9633        );
 9634        cx.simulate_prompt_answer("Save");
 9635        cx.background_executor.run_until_parked();
 9636        close_multi_buffer_task
 9637            .await
 9638            .expect("Closing the multi buffer failed");
 9639        pane.update(cx, |pane, cx| {
 9640            assert_eq!(
 9641                dirty_multi_buffer_with_both.read(cx).save_count,
 9642                1,
 9643                "Multi buffer item should get be saved"
 9644            );
 9645            // Test impl does not save inner items, so we do not assert them
 9646            assert_eq!(
 9647                pane.items_len(),
 9648                0,
 9649                "No more items should be left in the pane"
 9650            );
 9651            assert!(pane.active_item().is_none());
 9652        });
 9653    }
 9654
 9655    #[gpui::test]
 9656    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9657        cx: &mut TestAppContext,
 9658    ) {
 9659        init_test(cx);
 9660
 9661        let fs = FakeFs::new(cx.background_executor.clone());
 9662        let project = Project::test(fs, [], cx).await;
 9663        let (workspace, cx) =
 9664            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9665        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9666
 9667        let dirty_regular_buffer = cx.new(|cx| {
 9668            TestItem::new(cx)
 9669                .with_dirty(true)
 9670                .with_label("1.txt")
 9671                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9672        });
 9673        let dirty_regular_buffer_2 = cx.new(|cx| {
 9674            TestItem::new(cx)
 9675                .with_dirty(true)
 9676                .with_label("2.txt")
 9677                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9678        });
 9679        let clear_regular_buffer = cx.new(|cx| {
 9680            TestItem::new(cx)
 9681                .with_label("3.txt")
 9682                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9683        });
 9684
 9685        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9686            TestItem::new(cx)
 9687                .with_dirty(true)
 9688                .with_singleton(false)
 9689                .with_label("Fake Project Search")
 9690                .with_project_items(&[
 9691                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9692                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9693                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9694                ])
 9695        });
 9696        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9697        workspace.update_in(cx, |workspace, window, cx| {
 9698            workspace.add_item(
 9699                pane.clone(),
 9700                Box::new(dirty_regular_buffer.clone()),
 9701                None,
 9702                false,
 9703                false,
 9704                window,
 9705                cx,
 9706            );
 9707            workspace.add_item(
 9708                pane.clone(),
 9709                Box::new(dirty_multi_buffer_with_both.clone()),
 9710                None,
 9711                false,
 9712                false,
 9713                window,
 9714                cx,
 9715            );
 9716        });
 9717
 9718        pane.update_in(cx, |pane, window, cx| {
 9719            pane.activate_item(1, true, true, window, cx);
 9720            assert_eq!(
 9721                pane.active_item().unwrap().item_id(),
 9722                multi_buffer_with_both_files_id,
 9723                "Should select the multi buffer in the pane"
 9724            );
 9725        });
 9726        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9727            pane.close_active_item(
 9728                &CloseActiveItem {
 9729                    save_intent: None,
 9730                    close_pinned: false,
 9731                },
 9732                window,
 9733                cx,
 9734            )
 9735        });
 9736        cx.background_executor.run_until_parked();
 9737        assert!(
 9738            cx.has_pending_prompt(),
 9739            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9740        );
 9741    }
 9742
 9743    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9744    /// closed when they are deleted from disk.
 9745    #[gpui::test]
 9746    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9747        init_test(cx);
 9748
 9749        // Enable the close_on_disk_deletion setting
 9750        cx.update_global(|store: &mut SettingsStore, cx| {
 9751            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9752                settings.close_on_file_delete = Some(true);
 9753            });
 9754        });
 9755
 9756        let fs = FakeFs::new(cx.background_executor.clone());
 9757        let project = Project::test(fs, [], cx).await;
 9758        let (workspace, cx) =
 9759            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9760        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9761
 9762        // Create a test item that simulates a file
 9763        let item = cx.new(|cx| {
 9764            TestItem::new(cx)
 9765                .with_label("test.txt")
 9766                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9767        });
 9768
 9769        // Add item to workspace
 9770        workspace.update_in(cx, |workspace, window, cx| {
 9771            workspace.add_item(
 9772                pane.clone(),
 9773                Box::new(item.clone()),
 9774                None,
 9775                false,
 9776                false,
 9777                window,
 9778                cx,
 9779            );
 9780        });
 9781
 9782        // Verify the item is in the pane
 9783        pane.read_with(cx, |pane, _| {
 9784            assert_eq!(pane.items().count(), 1);
 9785        });
 9786
 9787        // Simulate file deletion by setting the item's deleted state
 9788        item.update(cx, |item, _| {
 9789            item.set_has_deleted_file(true);
 9790        });
 9791
 9792        // Emit UpdateTab event to trigger the close behavior
 9793        cx.run_until_parked();
 9794        item.update(cx, |_, cx| {
 9795            cx.emit(ItemEvent::UpdateTab);
 9796        });
 9797
 9798        // Allow the close operation to complete
 9799        cx.run_until_parked();
 9800
 9801        // Verify the item was automatically closed
 9802        pane.read_with(cx, |pane, _| {
 9803            assert_eq!(
 9804                pane.items().count(),
 9805                0,
 9806                "Item should be automatically closed when file is deleted"
 9807            );
 9808        });
 9809    }
 9810
 9811    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9812    /// open with a strikethrough when they are deleted from disk.
 9813    #[gpui::test]
 9814    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9815        init_test(cx);
 9816
 9817        // Ensure close_on_disk_deletion is disabled (default)
 9818        cx.update_global(|store: &mut SettingsStore, cx| {
 9819            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9820                settings.close_on_file_delete = Some(false);
 9821            });
 9822        });
 9823
 9824        let fs = FakeFs::new(cx.background_executor.clone());
 9825        let project = Project::test(fs, [], cx).await;
 9826        let (workspace, cx) =
 9827            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9828        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9829
 9830        // Create a test item that simulates a file
 9831        let item = cx.new(|cx| {
 9832            TestItem::new(cx)
 9833                .with_label("test.txt")
 9834                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9835        });
 9836
 9837        // Add item to workspace
 9838        workspace.update_in(cx, |workspace, window, cx| {
 9839            workspace.add_item(
 9840                pane.clone(),
 9841                Box::new(item.clone()),
 9842                None,
 9843                false,
 9844                false,
 9845                window,
 9846                cx,
 9847            );
 9848        });
 9849
 9850        // Verify the item is in the pane
 9851        pane.read_with(cx, |pane, _| {
 9852            assert_eq!(pane.items().count(), 1);
 9853        });
 9854
 9855        // Simulate file deletion
 9856        item.update(cx, |item, _| {
 9857            item.set_has_deleted_file(true);
 9858        });
 9859
 9860        // Emit UpdateTab event
 9861        cx.run_until_parked();
 9862        item.update(cx, |_, cx| {
 9863            cx.emit(ItemEvent::UpdateTab);
 9864        });
 9865
 9866        // Allow any potential close operation to complete
 9867        cx.run_until_parked();
 9868
 9869        // Verify the item remains open (with strikethrough)
 9870        pane.read_with(cx, |pane, _| {
 9871            assert_eq!(
 9872                pane.items().count(),
 9873                1,
 9874                "Item should remain open when close_on_disk_deletion is disabled"
 9875            );
 9876        });
 9877
 9878        // Verify the item shows as deleted
 9879        item.read_with(cx, |item, _| {
 9880            assert!(
 9881                item.has_deleted_file,
 9882                "Item should be marked as having deleted file"
 9883            );
 9884        });
 9885    }
 9886
 9887    /// Tests that dirty files are not automatically closed when deleted from disk,
 9888    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9889    /// unsaved changes without being prompted.
 9890    #[gpui::test]
 9891    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9892        init_test(cx);
 9893
 9894        // Enable the close_on_file_delete setting
 9895        cx.update_global(|store: &mut SettingsStore, cx| {
 9896            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9897                settings.close_on_file_delete = Some(true);
 9898            });
 9899        });
 9900
 9901        let fs = FakeFs::new(cx.background_executor.clone());
 9902        let project = Project::test(fs, [], cx).await;
 9903        let (workspace, cx) =
 9904            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9905        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9906
 9907        // Create a dirty test item
 9908        let item = cx.new(|cx| {
 9909            TestItem::new(cx)
 9910                .with_dirty(true)
 9911                .with_label("test.txt")
 9912                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9913        });
 9914
 9915        // Add item to workspace
 9916        workspace.update_in(cx, |workspace, window, cx| {
 9917            workspace.add_item(
 9918                pane.clone(),
 9919                Box::new(item.clone()),
 9920                None,
 9921                false,
 9922                false,
 9923                window,
 9924                cx,
 9925            );
 9926        });
 9927
 9928        // Simulate file deletion
 9929        item.update(cx, |item, _| {
 9930            item.set_has_deleted_file(true);
 9931        });
 9932
 9933        // Emit UpdateTab event to trigger the close behavior
 9934        cx.run_until_parked();
 9935        item.update(cx, |_, cx| {
 9936            cx.emit(ItemEvent::UpdateTab);
 9937        });
 9938
 9939        // Allow any potential close operation to complete
 9940        cx.run_until_parked();
 9941
 9942        // Verify the item remains open (dirty files are not auto-closed)
 9943        pane.read_with(cx, |pane, _| {
 9944            assert_eq!(
 9945                pane.items().count(),
 9946                1,
 9947                "Dirty items should not be automatically closed even when file is deleted"
 9948            );
 9949        });
 9950
 9951        // Verify the item is marked as deleted and still dirty
 9952        item.read_with(cx, |item, _| {
 9953            assert!(
 9954                item.has_deleted_file,
 9955                "Item should be marked as having deleted file"
 9956            );
 9957            assert!(item.is_dirty, "Item should still be dirty");
 9958        });
 9959    }
 9960
 9961    /// Tests that navigation history is cleaned up when files are auto-closed
 9962    /// due to deletion from disk.
 9963    #[gpui::test]
 9964    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9965        init_test(cx);
 9966
 9967        // Enable the close_on_file_delete setting
 9968        cx.update_global(|store: &mut SettingsStore, cx| {
 9969            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9970                settings.close_on_file_delete = Some(true);
 9971            });
 9972        });
 9973
 9974        let fs = FakeFs::new(cx.background_executor.clone());
 9975        let project = Project::test(fs, [], cx).await;
 9976        let (workspace, cx) =
 9977            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9978        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9979
 9980        // Create test items
 9981        let item1 = cx.new(|cx| {
 9982            TestItem::new(cx)
 9983                .with_label("test1.txt")
 9984                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9985        });
 9986        let item1_id = item1.item_id();
 9987
 9988        let item2 = cx.new(|cx| {
 9989            TestItem::new(cx)
 9990                .with_label("test2.txt")
 9991                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9992        });
 9993
 9994        // Add items to workspace
 9995        workspace.update_in(cx, |workspace, window, cx| {
 9996            workspace.add_item(
 9997                pane.clone(),
 9998                Box::new(item1.clone()),
 9999                None,
10000                false,
10001                false,
10002                window,
10003                cx,
10004            );
10005            workspace.add_item(
10006                pane.clone(),
10007                Box::new(item2.clone()),
10008                None,
10009                false,
10010                false,
10011                window,
10012                cx,
10013            );
10014        });
10015
10016        // Activate item1 to ensure it gets navigation entries
10017        pane.update_in(cx, |pane, window, cx| {
10018            pane.activate_item(0, true, true, window, cx);
10019        });
10020
10021        // Switch to item2 and back to create navigation history
10022        pane.update_in(cx, |pane, window, cx| {
10023            pane.activate_item(1, true, true, window, cx);
10024        });
10025        cx.run_until_parked();
10026
10027        pane.update_in(cx, |pane, window, cx| {
10028            pane.activate_item(0, true, true, window, cx);
10029        });
10030        cx.run_until_parked();
10031
10032        // Simulate file deletion for item1
10033        item1.update(cx, |item, _| {
10034            item.set_has_deleted_file(true);
10035        });
10036
10037        // Emit UpdateTab event to trigger the close behavior
10038        item1.update(cx, |_, cx| {
10039            cx.emit(ItemEvent::UpdateTab);
10040        });
10041        cx.run_until_parked();
10042
10043        // Verify item1 was closed
10044        pane.read_with(cx, |pane, _| {
10045            assert_eq!(
10046                pane.items().count(),
10047                1,
10048                "Should have 1 item remaining after auto-close"
10049            );
10050        });
10051
10052        // Check navigation history after close
10053        let has_item = pane.read_with(cx, |pane, cx| {
10054            let mut has_item = false;
10055            pane.nav_history().for_each_entry(cx, |entry, _| {
10056                if entry.item.id() == item1_id {
10057                    has_item = true;
10058                }
10059            });
10060            has_item
10061        });
10062
10063        assert!(
10064            !has_item,
10065            "Navigation history should not contain closed item entries"
10066        );
10067    }
10068
10069    #[gpui::test]
10070    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10071        cx: &mut TestAppContext,
10072    ) {
10073        init_test(cx);
10074
10075        let fs = FakeFs::new(cx.background_executor.clone());
10076        let project = Project::test(fs, [], cx).await;
10077        let (workspace, cx) =
10078            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10079        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10080
10081        let dirty_regular_buffer = cx.new(|cx| {
10082            TestItem::new(cx)
10083                .with_dirty(true)
10084                .with_label("1.txt")
10085                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10086        });
10087        let dirty_regular_buffer_2 = cx.new(|cx| {
10088            TestItem::new(cx)
10089                .with_dirty(true)
10090                .with_label("2.txt")
10091                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10092        });
10093        let clear_regular_buffer = cx.new(|cx| {
10094            TestItem::new(cx)
10095                .with_label("3.txt")
10096                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10097        });
10098
10099        let dirty_multi_buffer = cx.new(|cx| {
10100            TestItem::new(cx)
10101                .with_dirty(true)
10102                .with_singleton(false)
10103                .with_label("Fake Project Search")
10104                .with_project_items(&[
10105                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10106                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10107                    clear_regular_buffer.read(cx).project_items[0].clone(),
10108                ])
10109        });
10110        workspace.update_in(cx, |workspace, window, cx| {
10111            workspace.add_item(
10112                pane.clone(),
10113                Box::new(dirty_regular_buffer.clone()),
10114                None,
10115                false,
10116                false,
10117                window,
10118                cx,
10119            );
10120            workspace.add_item(
10121                pane.clone(),
10122                Box::new(dirty_regular_buffer_2.clone()),
10123                None,
10124                false,
10125                false,
10126                window,
10127                cx,
10128            );
10129            workspace.add_item(
10130                pane.clone(),
10131                Box::new(dirty_multi_buffer.clone()),
10132                None,
10133                false,
10134                false,
10135                window,
10136                cx,
10137            );
10138        });
10139
10140        pane.update_in(cx, |pane, window, cx| {
10141            pane.activate_item(2, true, true, window, cx);
10142            assert_eq!(
10143                pane.active_item().unwrap().item_id(),
10144                dirty_multi_buffer.item_id(),
10145                "Should select the multi buffer in the pane"
10146            );
10147        });
10148        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10149            pane.close_active_item(
10150                &CloseActiveItem {
10151                    save_intent: None,
10152                    close_pinned: false,
10153                },
10154                window,
10155                cx,
10156            )
10157        });
10158        cx.background_executor.run_until_parked();
10159        assert!(
10160            !cx.has_pending_prompt(),
10161            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10162        );
10163        close_multi_buffer_task
10164            .await
10165            .expect("Closing multi buffer failed");
10166        pane.update(cx, |pane, cx| {
10167            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10168            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10169            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10170            assert_eq!(
10171                pane.items()
10172                    .map(|item| item.item_id())
10173                    .sorted()
10174                    .collect::<Vec<_>>(),
10175                vec![
10176                    dirty_regular_buffer.item_id(),
10177                    dirty_regular_buffer_2.item_id(),
10178                ],
10179                "Should have no multi buffer left in the pane"
10180            );
10181            assert!(dirty_regular_buffer.read(cx).is_dirty);
10182            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10183        });
10184    }
10185
10186    #[gpui::test]
10187    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10188        init_test(cx);
10189        let fs = FakeFs::new(cx.executor());
10190        let project = Project::test(fs, [], cx).await;
10191        let (workspace, cx) =
10192            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10193
10194        // Add a new panel to the right dock, opening the dock and setting the
10195        // focus to the new panel.
10196        let panel = workspace.update_in(cx, |workspace, window, cx| {
10197            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10198            workspace.add_panel(panel.clone(), window, cx);
10199
10200            workspace
10201                .right_dock()
10202                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10203
10204            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10205
10206            panel
10207        });
10208
10209        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10210        // panel to the next valid position which, in this case, is the left
10211        // dock.
10212        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10213        workspace.update(cx, |workspace, cx| {
10214            assert!(workspace.left_dock().read(cx).is_open());
10215            assert_eq!(panel.read(cx).position, DockPosition::Left);
10216        });
10217
10218        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10219        // panel to the next valid position which, in this case, is the bottom
10220        // dock.
10221        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10222        workspace.update(cx, |workspace, cx| {
10223            assert!(workspace.bottom_dock().read(cx).is_open());
10224            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10225        });
10226
10227        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10228        // around moving the panel to its initial position, the right dock.
10229        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10230        workspace.update(cx, |workspace, cx| {
10231            assert!(workspace.right_dock().read(cx).is_open());
10232            assert_eq!(panel.read(cx).position, DockPosition::Right);
10233        });
10234
10235        // Remove focus from the panel, ensuring that, if the panel is not
10236        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10237        // the panel's position, so the panel is still in the right dock.
10238        workspace.update_in(cx, |workspace, window, cx| {
10239            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10240        });
10241
10242        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10243        workspace.update(cx, |workspace, cx| {
10244            assert!(workspace.right_dock().read(cx).is_open());
10245            assert_eq!(panel.read(cx).position, DockPosition::Right);
10246        });
10247    }
10248
10249    #[gpui::test]
10250    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10251        init_test(cx);
10252
10253        let fs = FakeFs::new(cx.executor());
10254        let project = Project::test(fs, [], cx).await;
10255        let (workspace, cx) =
10256            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10257
10258        let item_1 = cx.new(|cx| {
10259            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10260        });
10261        workspace.update_in(cx, |workspace, window, cx| {
10262            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10263            workspace.move_item_to_pane_in_direction(
10264                &MoveItemToPaneInDirection {
10265                    direction: SplitDirection::Right,
10266                    focus: true,
10267                    clone: false,
10268                },
10269                window,
10270                cx,
10271            );
10272            workspace.move_item_to_pane_at_index(
10273                &MoveItemToPane {
10274                    destination: 3,
10275                    focus: true,
10276                    clone: false,
10277                },
10278                window,
10279                cx,
10280            );
10281
10282            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10283            assert_eq!(
10284                pane_items_paths(&workspace.active_pane, cx),
10285                vec!["first.txt".to_string()],
10286                "Single item was not moved anywhere"
10287            );
10288        });
10289
10290        let item_2 = cx.new(|cx| {
10291            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10292        });
10293        workspace.update_in(cx, |workspace, window, cx| {
10294            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10295            assert_eq!(
10296                pane_items_paths(&workspace.panes[0], cx),
10297                vec!["first.txt".to_string(), "second.txt".to_string()],
10298            );
10299            workspace.move_item_to_pane_in_direction(
10300                &MoveItemToPaneInDirection {
10301                    direction: SplitDirection::Right,
10302                    focus: true,
10303                    clone: false,
10304                },
10305                window,
10306                cx,
10307            );
10308
10309            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10310            assert_eq!(
10311                pane_items_paths(&workspace.panes[0], cx),
10312                vec!["first.txt".to_string()],
10313                "After moving, one item should be left in the original pane"
10314            );
10315            assert_eq!(
10316                pane_items_paths(&workspace.panes[1], cx),
10317                vec!["second.txt".to_string()],
10318                "New item should have been moved to the new pane"
10319            );
10320        });
10321
10322        let item_3 = cx.new(|cx| {
10323            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10324        });
10325        workspace.update_in(cx, |workspace, window, cx| {
10326            let original_pane = workspace.panes[0].clone();
10327            workspace.set_active_pane(&original_pane, window, cx);
10328            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10329            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10330            assert_eq!(
10331                pane_items_paths(&workspace.active_pane, cx),
10332                vec!["first.txt".to_string(), "third.txt".to_string()],
10333                "New pane should be ready to move one item out"
10334            );
10335
10336            workspace.move_item_to_pane_at_index(
10337                &MoveItemToPane {
10338                    destination: 3,
10339                    focus: true,
10340                    clone: false,
10341                },
10342                window,
10343                cx,
10344            );
10345            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10346            assert_eq!(
10347                pane_items_paths(&workspace.active_pane, cx),
10348                vec!["first.txt".to_string()],
10349                "After moving, one item should be left in the original pane"
10350            );
10351            assert_eq!(
10352                pane_items_paths(&workspace.panes[1], cx),
10353                vec!["second.txt".to_string()],
10354                "Previously created pane should be unchanged"
10355            );
10356            assert_eq!(
10357                pane_items_paths(&workspace.panes[2], cx),
10358                vec!["third.txt".to_string()],
10359                "New item should have been moved to the new pane"
10360            );
10361        });
10362    }
10363
10364    #[gpui::test]
10365    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10366        init_test(cx);
10367
10368        let fs = FakeFs::new(cx.executor());
10369        let project = Project::test(fs, [], cx).await;
10370        let (workspace, cx) =
10371            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10372
10373        let item_1 = cx.new(|cx| {
10374            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10375        });
10376        workspace.update_in(cx, |workspace, window, cx| {
10377            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10378            workspace.move_item_to_pane_in_direction(
10379                &MoveItemToPaneInDirection {
10380                    direction: SplitDirection::Right,
10381                    focus: true,
10382                    clone: true,
10383                },
10384                window,
10385                cx,
10386            );
10387            workspace.move_item_to_pane_at_index(
10388                &MoveItemToPane {
10389                    destination: 3,
10390                    focus: true,
10391                    clone: true,
10392                },
10393                window,
10394                cx,
10395            );
10396
10397            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10398            for pane in workspace.panes() {
10399                assert_eq!(
10400                    pane_items_paths(pane, cx),
10401                    vec!["first.txt".to_string()],
10402                    "Single item exists in all panes"
10403                );
10404            }
10405        });
10406
10407        // verify that the active pane has been updated after waiting for the
10408        // pane focus event to fire and resolve
10409        workspace.read_with(cx, |workspace, _app| {
10410            assert_eq!(
10411                workspace.active_pane(),
10412                &workspace.panes[2],
10413                "The third pane should be the active one: {:?}",
10414                workspace.panes
10415            );
10416        })
10417    }
10418
10419    mod register_project_item_tests {
10420
10421        use super::*;
10422
10423        // View
10424        struct TestPngItemView {
10425            focus_handle: FocusHandle,
10426        }
10427        // Model
10428        struct TestPngItem {}
10429
10430        impl project::ProjectItem for TestPngItem {
10431            fn try_open(
10432                _project: &Entity<Project>,
10433                path: &ProjectPath,
10434                cx: &mut App,
10435            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10436                if path.path.extension().unwrap() == "png" {
10437                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10438                } else {
10439                    None
10440                }
10441            }
10442
10443            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10444                None
10445            }
10446
10447            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10448                None
10449            }
10450
10451            fn is_dirty(&self) -> bool {
10452                false
10453            }
10454        }
10455
10456        impl Item for TestPngItemView {
10457            type Event = ();
10458            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10459                "".into()
10460            }
10461        }
10462        impl EventEmitter<()> for TestPngItemView {}
10463        impl Focusable for TestPngItemView {
10464            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10465                self.focus_handle.clone()
10466            }
10467        }
10468
10469        impl Render for TestPngItemView {
10470            fn render(
10471                &mut self,
10472                _window: &mut Window,
10473                _cx: &mut Context<Self>,
10474            ) -> impl IntoElement {
10475                Empty
10476            }
10477        }
10478
10479        impl ProjectItem for TestPngItemView {
10480            type Item = TestPngItem;
10481
10482            fn for_project_item(
10483                _project: Entity<Project>,
10484                _pane: Option<&Pane>,
10485                _item: Entity<Self::Item>,
10486                _: &mut Window,
10487                cx: &mut Context<Self>,
10488            ) -> Self
10489            where
10490                Self: Sized,
10491            {
10492                Self {
10493                    focus_handle: cx.focus_handle(),
10494                }
10495            }
10496        }
10497
10498        // View
10499        struct TestIpynbItemView {
10500            focus_handle: FocusHandle,
10501        }
10502        // Model
10503        struct TestIpynbItem {}
10504
10505        impl project::ProjectItem for TestIpynbItem {
10506            fn try_open(
10507                _project: &Entity<Project>,
10508                path: &ProjectPath,
10509                cx: &mut App,
10510            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10511                if path.path.extension().unwrap() == "ipynb" {
10512                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10513                } else {
10514                    None
10515                }
10516            }
10517
10518            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10519                None
10520            }
10521
10522            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10523                None
10524            }
10525
10526            fn is_dirty(&self) -> bool {
10527                false
10528            }
10529        }
10530
10531        impl Item for TestIpynbItemView {
10532            type Event = ();
10533            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10534                "".into()
10535            }
10536        }
10537        impl EventEmitter<()> for TestIpynbItemView {}
10538        impl Focusable for TestIpynbItemView {
10539            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10540                self.focus_handle.clone()
10541            }
10542        }
10543
10544        impl Render for TestIpynbItemView {
10545            fn render(
10546                &mut self,
10547                _window: &mut Window,
10548                _cx: &mut Context<Self>,
10549            ) -> impl IntoElement {
10550                Empty
10551            }
10552        }
10553
10554        impl ProjectItem for TestIpynbItemView {
10555            type Item = TestIpynbItem;
10556
10557            fn for_project_item(
10558                _project: Entity<Project>,
10559                _pane: Option<&Pane>,
10560                _item: Entity<Self::Item>,
10561                _: &mut Window,
10562                cx: &mut Context<Self>,
10563            ) -> Self
10564            where
10565                Self: Sized,
10566            {
10567                Self {
10568                    focus_handle: cx.focus_handle(),
10569                }
10570            }
10571        }
10572
10573        struct TestAlternatePngItemView {
10574            focus_handle: FocusHandle,
10575        }
10576
10577        impl Item for TestAlternatePngItemView {
10578            type Event = ();
10579            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10580                "".into()
10581            }
10582        }
10583
10584        impl EventEmitter<()> for TestAlternatePngItemView {}
10585        impl Focusable for TestAlternatePngItemView {
10586            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10587                self.focus_handle.clone()
10588            }
10589        }
10590
10591        impl Render for TestAlternatePngItemView {
10592            fn render(
10593                &mut self,
10594                _window: &mut Window,
10595                _cx: &mut Context<Self>,
10596            ) -> impl IntoElement {
10597                Empty
10598            }
10599        }
10600
10601        impl ProjectItem for TestAlternatePngItemView {
10602            type Item = TestPngItem;
10603
10604            fn for_project_item(
10605                _project: Entity<Project>,
10606                _pane: Option<&Pane>,
10607                _item: Entity<Self::Item>,
10608                _: &mut Window,
10609                cx: &mut Context<Self>,
10610            ) -> Self
10611            where
10612                Self: Sized,
10613            {
10614                Self {
10615                    focus_handle: cx.focus_handle(),
10616                }
10617            }
10618        }
10619
10620        #[gpui::test]
10621        async fn test_register_project_item(cx: &mut TestAppContext) {
10622            init_test(cx);
10623
10624            cx.update(|cx| {
10625                register_project_item::<TestPngItemView>(cx);
10626                register_project_item::<TestIpynbItemView>(cx);
10627            });
10628
10629            let fs = FakeFs::new(cx.executor());
10630            fs.insert_tree(
10631                "/root1",
10632                json!({
10633                    "one.png": "BINARYDATAHERE",
10634                    "two.ipynb": "{ totally a notebook }",
10635                    "three.txt": "editing text, sure why not?"
10636                }),
10637            )
10638            .await;
10639
10640            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10641            let (workspace, cx) =
10642                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10643
10644            let worktree_id = project.update(cx, |project, cx| {
10645                project.worktrees(cx).next().unwrap().read(cx).id()
10646            });
10647
10648            let handle = workspace
10649                .update_in(cx, |workspace, window, cx| {
10650                    let project_path = (worktree_id, "one.png");
10651                    workspace.open_path(project_path, None, true, window, cx)
10652                })
10653                .await
10654                .unwrap();
10655
10656            // Now we can check if the handle we got back errored or not
10657            assert_eq!(
10658                handle.to_any().entity_type(),
10659                TypeId::of::<TestPngItemView>()
10660            );
10661
10662            let handle = workspace
10663                .update_in(cx, |workspace, window, cx| {
10664                    let project_path = (worktree_id, "two.ipynb");
10665                    workspace.open_path(project_path, None, true, window, cx)
10666                })
10667                .await
10668                .unwrap();
10669
10670            assert_eq!(
10671                handle.to_any().entity_type(),
10672                TypeId::of::<TestIpynbItemView>()
10673            );
10674
10675            let handle = workspace
10676                .update_in(cx, |workspace, window, cx| {
10677                    let project_path = (worktree_id, "three.txt");
10678                    workspace.open_path(project_path, None, true, window, cx)
10679                })
10680                .await;
10681            assert!(handle.is_err());
10682        }
10683
10684        #[gpui::test]
10685        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10686            init_test(cx);
10687
10688            cx.update(|cx| {
10689                register_project_item::<TestPngItemView>(cx);
10690                register_project_item::<TestAlternatePngItemView>(cx);
10691            });
10692
10693            let fs = FakeFs::new(cx.executor());
10694            fs.insert_tree(
10695                "/root1",
10696                json!({
10697                    "one.png": "BINARYDATAHERE",
10698                    "two.ipynb": "{ totally a notebook }",
10699                    "three.txt": "editing text, sure why not?"
10700                }),
10701            )
10702            .await;
10703            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10704            let (workspace, cx) =
10705                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10706            let worktree_id = project.update(cx, |project, cx| {
10707                project.worktrees(cx).next().unwrap().read(cx).id()
10708            });
10709
10710            let handle = workspace
10711                .update_in(cx, |workspace, window, cx| {
10712                    let project_path = (worktree_id, "one.png");
10713                    workspace.open_path(project_path, None, true, window, cx)
10714                })
10715                .await
10716                .unwrap();
10717
10718            // This _must_ be the second item registered
10719            assert_eq!(
10720                handle.to_any().entity_type(),
10721                TypeId::of::<TestAlternatePngItemView>()
10722            );
10723
10724            let handle = workspace
10725                .update_in(cx, |workspace, window, cx| {
10726                    let project_path = (worktree_id, "three.txt");
10727                    workspace.open_path(project_path, None, true, window, cx)
10728                })
10729                .await;
10730            assert!(handle.is_err());
10731        }
10732    }
10733
10734    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10735        pane.read(cx)
10736            .items()
10737            .flat_map(|item| {
10738                item.project_paths(cx)
10739                    .into_iter()
10740                    .map(|path| path.path.to_string_lossy().to_string())
10741            })
10742            .collect()
10743    }
10744
10745    pub fn init_test(cx: &mut TestAppContext) {
10746        cx.update(|cx| {
10747            let settings_store = SettingsStore::test(cx);
10748            cx.set_global(settings_store);
10749            theme::init(theme::LoadThemes::JustBase, cx);
10750            language::init(cx);
10751            crate::init_settings(cx);
10752            Project::init_settings(cx);
10753        });
10754    }
10755
10756    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10757        let item = TestProjectItem::new(id, path, cx);
10758        item.update(cx, |item, _| {
10759            item.is_dirty = true;
10760        });
10761        item
10762    }
10763}