workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod item;
    4mod modal_layer;
    5pub mod notifications;
    6pub mod pane;
    7pub mod pane_group;
    8mod persistence;
    9pub mod searchable;
   10pub mod shared_screen;
   11mod status_bar;
   12pub mod tasks;
   13mod theme_preview;
   14mod toast_layer;
   15mod toolbar;
   16mod workspace_settings;
   17
   18use client::CloudUserStore;
   19pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   20
   21use anyhow::{Context as _, Result, anyhow};
   22use call::{ActiveCall, call_settings::CallSettings};
   23use client::{
   24    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   25    proto::{self, ErrorCode, PanelId, PeerId},
   26};
   27use collections::{HashMap, HashSet, hash_map};
   28pub use dock::Panel;
   29use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   30use futures::{
   31    Future, FutureExt, StreamExt,
   32    channel::{
   33        mpsc::{self, UnboundedReceiver, UnboundedSender},
   34        oneshot,
   35    },
   36    future::{Shared, try_join_all},
   37};
   38use gpui::{
   39    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   40    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   41    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   42    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   43    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   44    point, relative, size, transparent_black,
   45};
   46pub use history_manager::*;
   47pub use item::{
   48    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   49    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   50};
   51use itertools::Itertools;
   52use language::{Buffer, LanguageRegistry, Rope};
   53pub use modal_layer::*;
   54use node_runtime::NodeRuntime;
   55use notifications::{
   56    DetachAndPromptErr, Notifications, dismiss_app_notification,
   57    simple_message_notification::MessageNotification,
   58};
   59pub use pane::*;
   60pub use pane_group::*;
   61use persistence::{
   62    DB, SerializedWindowBounds,
   63    model::{SerializedSshProject, SerializedWorkspace},
   64};
   65pub use persistence::{
   66    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   67    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   68};
   69use postage::stream::Stream;
   70use project::{
   71    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   72    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   73};
   74use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   75use schemars::JsonSchema;
   76use serde::Deserialize;
   77use session::AppSession;
   78use settings::Settings;
   79use shared_screen::SharedScreen;
   80use sqlez::{
   81    bindable::{Bind, Column, StaticColumnCount},
   82    statement::Statement,
   83};
   84use status_bar::StatusBar;
   85pub use status_bar::StatusItemView;
   86use std::{
   87    any::TypeId,
   88    borrow::Cow,
   89    cell::RefCell,
   90    cmp,
   91    collections::{VecDeque, hash_map::DefaultHasher},
   92    env,
   93    hash::{Hash, Hasher},
   94    path::{Path, PathBuf},
   95    process::ExitStatus,
   96    rc::Rc,
   97    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
   98    time::Duration,
   99};
  100use task::{DebugScenario, SpawnInTerminal, TaskContext};
  101use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  102pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  103pub use ui;
  104use ui::{Window, prelude::*};
  105use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  106use uuid::Uuid;
  107pub use workspace_settings::{
  108    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  109};
  110use zed_actions::{Spawn, feedback::FileBugReport};
  111
  112use crate::notifications::NotificationId;
  113use crate::persistence::{
  114    SerializedAxis,
  115    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  116};
  117
  118pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  119
  120static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  121    env::var("ZED_WINDOW_SIZE")
  122        .ok()
  123        .as_deref()
  124        .and_then(parse_pixel_size_env_var)
  125});
  126
  127static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  128    env::var("ZED_WINDOW_POSITION")
  129        .ok()
  130        .as_deref()
  131        .and_then(parse_pixel_position_env_var)
  132});
  133
  134pub trait TerminalProvider {
  135    fn spawn(
  136        &self,
  137        task: SpawnInTerminal,
  138        window: &mut Window,
  139        cx: &mut App,
  140    ) -> Task<Option<Result<ExitStatus>>>;
  141}
  142
  143pub trait DebuggerProvider {
  144    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  145    fn start_session(
  146        &self,
  147        definition: DebugScenario,
  148        task_context: TaskContext,
  149        active_buffer: Option<Entity<Buffer>>,
  150        worktree_id: Option<WorktreeId>,
  151        window: &mut Window,
  152        cx: &mut App,
  153    );
  154
  155    fn spawn_task_or_modal(
  156        &self,
  157        workspace: &mut Workspace,
  158        action: &Spawn,
  159        window: &mut Window,
  160        cx: &mut Context<Workspace>,
  161    );
  162
  163    fn task_scheduled(&self, cx: &mut App);
  164    fn debug_scenario_scheduled(&self, cx: &mut App);
  165    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  166
  167    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  168}
  169
  170actions!(
  171    workspace,
  172    [
  173        /// Activates the next pane in the workspace.
  174        ActivateNextPane,
  175        /// Activates the previous pane in the workspace.
  176        ActivatePreviousPane,
  177        /// Switches to the next window.
  178        ActivateNextWindow,
  179        /// Switches to the previous window.
  180        ActivatePreviousWindow,
  181        /// Adds a folder to the current project.
  182        AddFolderToProject,
  183        /// Clears all notifications.
  184        ClearAllNotifications,
  185        /// Closes the active dock.
  186        CloseActiveDock,
  187        /// Closes all docks.
  188        CloseAllDocks,
  189        /// Closes the current window.
  190        CloseWindow,
  191        /// Opens the feedback dialog.
  192        Feedback,
  193        /// Follows the next collaborator in the session.
  194        FollowNextCollaborator,
  195        /// Moves the focused panel to the next position.
  196        MoveFocusedPanelToNextPosition,
  197        /// Opens a new terminal in the center.
  198        NewCenterTerminal,
  199        /// Creates a new file.
  200        NewFile,
  201        /// Creates a new file in a vertical split.
  202        NewFileSplitVertical,
  203        /// Creates a new file in a horizontal split.
  204        NewFileSplitHorizontal,
  205        /// Opens a new search.
  206        NewSearch,
  207        /// Opens a new terminal.
  208        NewTerminal,
  209        /// Opens a new window.
  210        NewWindow,
  211        /// Opens a file or directory.
  212        Open,
  213        /// Opens multiple files.
  214        OpenFiles,
  215        /// Opens the current location in terminal.
  216        OpenInTerminal,
  217        /// Opens the component preview.
  218        OpenComponentPreview,
  219        /// Reloads the active item.
  220        ReloadActiveItem,
  221        /// Resets the active dock to its default size.
  222        ResetActiveDockSize,
  223        /// Resets all open docks to their default sizes.
  224        ResetOpenDocksSize,
  225        /// Saves the current file with a new name.
  226        SaveAs,
  227        /// Saves without formatting.
  228        SaveWithoutFormat,
  229        /// Shuts down all debug adapters.
  230        ShutdownDebugAdapters,
  231        /// Suppresses the current notification.
  232        SuppressNotification,
  233        /// Toggles the bottom dock.
  234        ToggleBottomDock,
  235        /// Toggles centered layout mode.
  236        ToggleCenteredLayout,
  237        /// Toggles the left dock.
  238        ToggleLeftDock,
  239        /// Toggles the right dock.
  240        ToggleRightDock,
  241        /// Toggles zoom on the active pane.
  242        ToggleZoom,
  243        /// Stops following a collaborator.
  244        Unfollow,
  245        /// Shows the welcome screen.
  246        Welcome,
  247        /// Restores the banner.
  248        RestoreBanner,
  249        /// Toggles expansion of the selected item.
  250        ToggleExpandItem,
  251    ]
  252);
  253
  254#[derive(Clone, PartialEq)]
  255pub struct OpenPaths {
  256    pub paths: Vec<PathBuf>,
  257}
  258
  259/// Activates a specific pane by its index.
  260#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  261#[action(namespace = workspace)]
  262pub struct ActivatePane(pub usize);
  263
  264/// Moves an item to a specific pane by index.
  265#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  266#[action(namespace = workspace)]
  267#[serde(deny_unknown_fields)]
  268pub struct MoveItemToPane {
  269    #[serde(default = "default_1")]
  270    pub destination: usize,
  271    #[serde(default = "default_true")]
  272    pub focus: bool,
  273    #[serde(default)]
  274    pub clone: bool,
  275}
  276
  277fn default_1() -> usize {
  278    1
  279}
  280
  281/// Moves an item to a pane in the specified direction.
  282#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  283#[action(namespace = workspace)]
  284#[serde(deny_unknown_fields)]
  285pub struct MoveItemToPaneInDirection {
  286    #[serde(default = "default_right")]
  287    pub direction: SplitDirection,
  288    #[serde(default = "default_true")]
  289    pub focus: bool,
  290    #[serde(default)]
  291    pub clone: bool,
  292}
  293
  294fn default_right() -> SplitDirection {
  295    SplitDirection::Right
  296}
  297
  298/// Saves all open files in the workspace.
  299#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  300#[action(namespace = workspace)]
  301#[serde(deny_unknown_fields)]
  302pub struct SaveAll {
  303    #[serde(default)]
  304    pub save_intent: Option<SaveIntent>,
  305}
  306
  307/// Saves the current file with the specified options.
  308#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  309#[action(namespace = workspace)]
  310#[serde(deny_unknown_fields)]
  311pub struct Save {
  312    #[serde(default)]
  313    pub save_intent: Option<SaveIntent>,
  314}
  315
  316/// Closes all items and panes in the workspace.
  317#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  318#[action(namespace = workspace)]
  319#[serde(deny_unknown_fields)]
  320pub struct CloseAllItemsAndPanes {
  321    #[serde(default)]
  322    pub save_intent: Option<SaveIntent>,
  323}
  324
  325/// Closes all inactive tabs and panes in the workspace.
  326#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  327#[action(namespace = workspace)]
  328#[serde(deny_unknown_fields)]
  329pub struct CloseInactiveTabsAndPanes {
  330    #[serde(default)]
  331    pub save_intent: Option<SaveIntent>,
  332}
  333
  334/// Sends a sequence of keystrokes to the active element.
  335#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  336#[action(namespace = workspace)]
  337pub struct SendKeystrokes(pub String);
  338
  339/// Reloads the active item or workspace.
  340#[derive(Clone, Deserialize, PartialEq, Default, JsonSchema, Action)]
  341#[action(namespace = workspace)]
  342#[serde(deny_unknown_fields)]
  343pub struct Reload {
  344    pub binary_path: Option<PathBuf>,
  345}
  346
  347actions!(
  348    project_symbols,
  349    [
  350        /// Toggles the project symbols search.
  351        #[action(name = "Toggle")]
  352        ToggleProjectSymbols
  353    ]
  354);
  355
  356/// Toggles the file finder interface.
  357#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  358#[action(namespace = file_finder, name = "Toggle")]
  359#[serde(deny_unknown_fields)]
  360pub struct ToggleFileFinder {
  361    #[serde(default)]
  362    pub separate_history: bool,
  363}
  364
  365/// Increases size of a currently focused dock by a given amount of pixels.
  366#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  367#[action(namespace = workspace)]
  368#[serde(deny_unknown_fields)]
  369pub struct IncreaseActiveDockSize {
  370    /// For 0px parameter, uses UI font size value.
  371    #[serde(default)]
  372    pub px: u32,
  373}
  374
  375/// Decreases size of a currently focused dock by a given amount of pixels.
  376#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  377#[action(namespace = workspace)]
  378#[serde(deny_unknown_fields)]
  379pub struct DecreaseActiveDockSize {
  380    /// For 0px parameter, uses UI font size value.
  381    #[serde(default)]
  382    pub px: u32,
  383}
  384
  385/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  386#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  387#[action(namespace = workspace)]
  388#[serde(deny_unknown_fields)]
  389pub struct IncreaseOpenDocksSize {
  390    /// For 0px parameter, uses UI font size value.
  391    #[serde(default)]
  392    pub px: u32,
  393}
  394
  395/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  396#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  397#[action(namespace = workspace)]
  398#[serde(deny_unknown_fields)]
  399pub struct DecreaseOpenDocksSize {
  400    /// For 0px parameter, uses UI font size value.
  401    #[serde(default)]
  402    pub px: u32,
  403}
  404
  405actions!(
  406    workspace,
  407    [
  408        /// Activates the pane to the left.
  409        ActivatePaneLeft,
  410        /// Activates the pane to the right.
  411        ActivatePaneRight,
  412        /// Activates the pane above.
  413        ActivatePaneUp,
  414        /// Activates the pane below.
  415        ActivatePaneDown,
  416        /// Swaps the current pane with the one to the left.
  417        SwapPaneLeft,
  418        /// Swaps the current pane with the one to the right.
  419        SwapPaneRight,
  420        /// Swaps the current pane with the one above.
  421        SwapPaneUp,
  422        /// Swaps the current pane with the one below.
  423        SwapPaneDown,
  424    ]
  425);
  426
  427#[derive(PartialEq, Eq, Debug)]
  428pub enum CloseIntent {
  429    /// Quit the program entirely.
  430    Quit,
  431    /// Close a window.
  432    CloseWindow,
  433    /// Replace the workspace in an existing window.
  434    ReplaceWindow,
  435}
  436
  437#[derive(Clone)]
  438pub struct Toast {
  439    id: NotificationId,
  440    msg: Cow<'static, str>,
  441    autohide: bool,
  442    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  443}
  444
  445impl Toast {
  446    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  447        Toast {
  448            id,
  449            msg: msg.into(),
  450            on_click: None,
  451            autohide: false,
  452        }
  453    }
  454
  455    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  456    where
  457        M: Into<Cow<'static, str>>,
  458        F: Fn(&mut Window, &mut App) + 'static,
  459    {
  460        self.on_click = Some((message.into(), Arc::new(on_click)));
  461        self
  462    }
  463
  464    pub fn autohide(mut self) -> Self {
  465        self.autohide = true;
  466        self
  467    }
  468}
  469
  470impl PartialEq for Toast {
  471    fn eq(&self, other: &Self) -> bool {
  472        self.id == other.id
  473            && self.msg == other.msg
  474            && self.on_click.is_some() == other.on_click.is_some()
  475    }
  476}
  477
  478/// Opens a new terminal with the specified working directory.
  479#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  480#[action(namespace = workspace)]
  481#[serde(deny_unknown_fields)]
  482pub struct OpenTerminal {
  483    pub working_directory: PathBuf,
  484}
  485
  486#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  487pub struct WorkspaceId(i64);
  488
  489impl StaticColumnCount for WorkspaceId {}
  490impl Bind for WorkspaceId {
  491    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  492        self.0.bind(statement, start_index)
  493    }
  494}
  495impl Column for WorkspaceId {
  496    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  497        i64::column(statement, start_index)
  498            .map(|(i, next_index)| (Self(i), next_index))
  499            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  500    }
  501}
  502impl From<WorkspaceId> for i64 {
  503    fn from(val: WorkspaceId) -> Self {
  504        val.0
  505    }
  506}
  507
  508pub fn init_settings(cx: &mut App) {
  509    WorkspaceSettings::register(cx);
  510    ItemSettings::register(cx);
  511    PreviewTabsSettings::register(cx);
  512    TabBarSettings::register(cx);
  513}
  514
  515fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  516    let paths = cx.prompt_for_paths(options);
  517    cx.spawn(
  518        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  519            Ok(Some(paths)) => {
  520                cx.update(|cx| {
  521                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  522                })
  523                .ok();
  524            }
  525            Ok(None) => {}
  526            Err(err) => {
  527                util::log_err(&err);
  528                cx.update(|cx| {
  529                    if let Some(workspace_window) = cx
  530                        .active_window()
  531                        .and_then(|window| window.downcast::<Workspace>())
  532                    {
  533                        workspace_window
  534                            .update(cx, |workspace, _, cx| {
  535                                workspace.show_portal_error(err.to_string(), cx);
  536                            })
  537                            .ok();
  538                    }
  539                })
  540                .ok();
  541            }
  542        },
  543    )
  544    .detach();
  545}
  546
  547pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  548    init_settings(cx);
  549    component::init();
  550    theme_preview::init(cx);
  551    toast_layer::init(cx);
  552    history_manager::init(cx);
  553
  554    cx.on_action(Workspace::close_global);
  555    cx.on_action(reload);
  556
  557    cx.on_action({
  558        let app_state = Arc::downgrade(&app_state);
  559        move |_: &Open, cx: &mut App| {
  560            if let Some(app_state) = app_state.upgrade() {
  561                prompt_and_open_paths(
  562                    app_state,
  563                    PathPromptOptions {
  564                        files: true,
  565                        directories: true,
  566                        multiple: true,
  567                    },
  568                    cx,
  569                );
  570            }
  571        }
  572    });
  573    cx.on_action({
  574        let app_state = Arc::downgrade(&app_state);
  575        move |_: &OpenFiles, cx: &mut App| {
  576            let directories = cx.can_select_mixed_files_and_dirs();
  577            if let Some(app_state) = app_state.upgrade() {
  578                prompt_and_open_paths(
  579                    app_state,
  580                    PathPromptOptions {
  581                        files: true,
  582                        directories,
  583                        multiple: true,
  584                    },
  585                    cx,
  586                );
  587            }
  588        }
  589    });
  590}
  591
  592type BuildProjectItemFn =
  593    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  594
  595type BuildProjectItemForPathFn =
  596    fn(
  597        &Entity<Project>,
  598        &ProjectPath,
  599        &mut Window,
  600        &mut App,
  601    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  602
  603#[derive(Clone, Default)]
  604struct ProjectItemRegistry {
  605    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  606    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  607}
  608
  609impl ProjectItemRegistry {
  610    fn register<T: ProjectItem>(&mut self) {
  611        self.build_project_item_fns_by_type.insert(
  612            TypeId::of::<T::Item>(),
  613            |item, project, pane, window, cx| {
  614                let item = item.downcast().unwrap();
  615                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  616                    as Box<dyn ItemHandle>
  617            },
  618        );
  619        self.build_project_item_for_path_fns
  620            .push(|project, project_path, window, cx| {
  621                let project_item =
  622                    <T::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
  623                let project = project.clone();
  624                Some(window.spawn(cx, async move |cx| {
  625                    let project_item = project_item.await?;
  626                    let project_entry_id: Option<ProjectEntryId> =
  627                        project_item.read_with(cx, project::ProjectItem::entry_id)?;
  628                    let build_workspace_item = Box::new(
  629                        |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  630                            Box::new(cx.new(|cx| {
  631                                T::for_project_item(project, Some(pane), project_item, window, cx)
  632                            })) as Box<dyn ItemHandle>
  633                        },
  634                    ) as Box<_>;
  635                    Ok((project_entry_id, build_workspace_item))
  636                }))
  637            });
  638    }
  639
  640    fn open_path(
  641        &self,
  642        project: &Entity<Project>,
  643        path: &ProjectPath,
  644        window: &mut Window,
  645        cx: &mut App,
  646    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  647        let Some(open_project_item) = self
  648            .build_project_item_for_path_fns
  649            .iter()
  650            .rev()
  651            .find_map(|open_project_item| open_project_item(&project, &path, window, cx))
  652        else {
  653            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  654        };
  655        open_project_item
  656    }
  657
  658    fn build_item<T: project::ProjectItem>(
  659        &self,
  660        item: Entity<T>,
  661        project: Entity<Project>,
  662        pane: Option<&Pane>,
  663        window: &mut Window,
  664        cx: &mut App,
  665    ) -> Option<Box<dyn ItemHandle>> {
  666        let build = self
  667            .build_project_item_fns_by_type
  668            .get(&TypeId::of::<T>())?;
  669        Some(build(item.into_any(), project, pane, window, cx))
  670    }
  671}
  672
  673type WorkspaceItemBuilder =
  674    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  675
  676impl Global for ProjectItemRegistry {}
  677
  678/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  679/// items will get a chance to open the file, starting from the project item that
  680/// was added last.
  681pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  682    cx.default_global::<ProjectItemRegistry>().register::<I>();
  683}
  684
  685#[derive(Default)]
  686pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  687
  688struct FollowableViewDescriptor {
  689    from_state_proto: fn(
  690        Entity<Workspace>,
  691        ViewId,
  692        &mut Option<proto::view::Variant>,
  693        &mut Window,
  694        &mut App,
  695    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  696    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  697}
  698
  699impl Global for FollowableViewRegistry {}
  700
  701impl FollowableViewRegistry {
  702    pub fn register<I: FollowableItem>(cx: &mut App) {
  703        cx.default_global::<Self>().0.insert(
  704            TypeId::of::<I>(),
  705            FollowableViewDescriptor {
  706                from_state_proto: |workspace, id, state, window, cx| {
  707                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  708                        cx.foreground_executor()
  709                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  710                    })
  711                },
  712                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  713            },
  714        );
  715    }
  716
  717    pub fn from_state_proto(
  718        workspace: Entity<Workspace>,
  719        view_id: ViewId,
  720        mut state: Option<proto::view::Variant>,
  721        window: &mut Window,
  722        cx: &mut App,
  723    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  724        cx.update_default_global(|this: &mut Self, cx| {
  725            this.0.values().find_map(|descriptor| {
  726                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  727            })
  728        })
  729    }
  730
  731    pub fn to_followable_view(
  732        view: impl Into<AnyView>,
  733        cx: &App,
  734    ) -> Option<Box<dyn FollowableItemHandle>> {
  735        let this = cx.try_global::<Self>()?;
  736        let view = view.into();
  737        let descriptor = this.0.get(&view.entity_type())?;
  738        Some((descriptor.to_followable_view)(&view))
  739    }
  740}
  741
  742#[derive(Copy, Clone)]
  743struct SerializableItemDescriptor {
  744    deserialize: fn(
  745        Entity<Project>,
  746        WeakEntity<Workspace>,
  747        WorkspaceId,
  748        ItemId,
  749        &mut Window,
  750        &mut Context<Pane>,
  751    ) -> Task<Result<Box<dyn ItemHandle>>>,
  752    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  753    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  754}
  755
  756#[derive(Default)]
  757struct SerializableItemRegistry {
  758    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  759    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  760}
  761
  762impl Global for SerializableItemRegistry {}
  763
  764impl SerializableItemRegistry {
  765    fn deserialize(
  766        item_kind: &str,
  767        project: Entity<Project>,
  768        workspace: WeakEntity<Workspace>,
  769        workspace_id: WorkspaceId,
  770        item_item: ItemId,
  771        window: &mut Window,
  772        cx: &mut Context<Pane>,
  773    ) -> Task<Result<Box<dyn ItemHandle>>> {
  774        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  775            return Task::ready(Err(anyhow!(
  776                "cannot deserialize {}, descriptor not found",
  777                item_kind
  778            )));
  779        };
  780
  781        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  782    }
  783
  784    fn cleanup(
  785        item_kind: &str,
  786        workspace_id: WorkspaceId,
  787        loaded_items: Vec<ItemId>,
  788        window: &mut Window,
  789        cx: &mut App,
  790    ) -> Task<Result<()>> {
  791        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  792            return Task::ready(Err(anyhow!(
  793                "cannot cleanup {}, descriptor not found",
  794                item_kind
  795            )));
  796        };
  797
  798        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  799    }
  800
  801    fn view_to_serializable_item_handle(
  802        view: AnyView,
  803        cx: &App,
  804    ) -> Option<Box<dyn SerializableItemHandle>> {
  805        let this = cx.try_global::<Self>()?;
  806        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  807        Some((descriptor.view_to_serializable_item)(view))
  808    }
  809
  810    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  811        let this = cx.try_global::<Self>()?;
  812        this.descriptors_by_kind.get(item_kind).copied()
  813    }
  814}
  815
  816pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  817    let serialized_item_kind = I::serialized_item_kind();
  818
  819    let registry = cx.default_global::<SerializableItemRegistry>();
  820    let descriptor = SerializableItemDescriptor {
  821        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  822            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  823            cx.foreground_executor()
  824                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  825        },
  826        cleanup: |workspace_id, loaded_items, window, cx| {
  827            I::cleanup(workspace_id, loaded_items, window, cx)
  828        },
  829        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  830    };
  831    registry
  832        .descriptors_by_kind
  833        .insert(Arc::from(serialized_item_kind), descriptor);
  834    registry
  835        .descriptors_by_type
  836        .insert(TypeId::of::<I>(), descriptor);
  837}
  838
  839pub struct AppState {
  840    pub languages: Arc<LanguageRegistry>,
  841    pub client: Arc<Client>,
  842    pub user_store: Entity<UserStore>,
  843    pub cloud_user_store: Entity<CloudUserStore>,
  844    pub workspace_store: Entity<WorkspaceStore>,
  845    pub fs: Arc<dyn fs::Fs>,
  846    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  847    pub node_runtime: NodeRuntime,
  848    pub session: Entity<AppSession>,
  849}
  850
  851struct GlobalAppState(Weak<AppState>);
  852
  853impl Global for GlobalAppState {}
  854
  855pub struct WorkspaceStore {
  856    workspaces: HashSet<WindowHandle<Workspace>>,
  857    client: Arc<Client>,
  858    _subscriptions: Vec<client::Subscription>,
  859}
  860
  861#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  862pub enum CollaboratorId {
  863    PeerId(PeerId),
  864    Agent,
  865}
  866
  867impl From<PeerId> for CollaboratorId {
  868    fn from(peer_id: PeerId) -> Self {
  869        CollaboratorId::PeerId(peer_id)
  870    }
  871}
  872
  873impl From<&PeerId> for CollaboratorId {
  874    fn from(peer_id: &PeerId) -> Self {
  875        CollaboratorId::PeerId(*peer_id)
  876    }
  877}
  878
  879#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  880struct Follower {
  881    project_id: Option<u64>,
  882    peer_id: PeerId,
  883}
  884
  885impl AppState {
  886    #[track_caller]
  887    pub fn global(cx: &App) -> Weak<Self> {
  888        cx.global::<GlobalAppState>().0.clone()
  889    }
  890    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  891        cx.try_global::<GlobalAppState>()
  892            .map(|state| state.0.clone())
  893    }
  894    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  895        cx.set_global(GlobalAppState(state));
  896    }
  897
  898    #[cfg(any(test, feature = "test-support"))]
  899    pub fn test(cx: &mut App) -> Arc<Self> {
  900        use node_runtime::NodeRuntime;
  901        use session::Session;
  902        use settings::SettingsStore;
  903
  904        if !cx.has_global::<SettingsStore>() {
  905            let settings_store = SettingsStore::test(cx);
  906            cx.set_global(settings_store);
  907        }
  908
  909        let fs = fs::FakeFs::new(cx.background_executor().clone());
  910        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  911        let clock = Arc::new(clock::FakeSystemClock::new());
  912        let http_client = http_client::FakeHttpClient::with_404_response();
  913        let client = Client::new(clock, http_client.clone(), cx);
  914        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  915        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  916        let cloud_user_store =
  917            cx.new(|cx| CloudUserStore::new(client.cloud_client(), user_store.clone(), cx));
  918        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  919
  920        theme::init(theme::LoadThemes::JustBase, cx);
  921        client::init(&client, cx);
  922        crate::init_settings(cx);
  923
  924        Arc::new(Self {
  925            client,
  926            fs,
  927            languages,
  928            user_store,
  929            cloud_user_store,
  930            workspace_store,
  931            node_runtime: NodeRuntime::unavailable(),
  932            build_window_options: |_, _| Default::default(),
  933            session,
  934        })
  935    }
  936}
  937
  938struct DelayedDebouncedEditAction {
  939    task: Option<Task<()>>,
  940    cancel_channel: Option<oneshot::Sender<()>>,
  941}
  942
  943impl DelayedDebouncedEditAction {
  944    fn new() -> DelayedDebouncedEditAction {
  945        DelayedDebouncedEditAction {
  946            task: None,
  947            cancel_channel: None,
  948        }
  949    }
  950
  951    fn fire_new<F>(
  952        &mut self,
  953        delay: Duration,
  954        window: &mut Window,
  955        cx: &mut Context<Workspace>,
  956        func: F,
  957    ) where
  958        F: 'static
  959            + Send
  960            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  961    {
  962        if let Some(channel) = self.cancel_channel.take() {
  963            _ = channel.send(());
  964        }
  965
  966        let (sender, mut receiver) = oneshot::channel::<()>();
  967        self.cancel_channel = Some(sender);
  968
  969        let previous_task = self.task.take();
  970        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  971            let mut timer = cx.background_executor().timer(delay).fuse();
  972            if let Some(previous_task) = previous_task {
  973                previous_task.await;
  974            }
  975
  976            futures::select_biased! {
  977                _ = receiver => return,
  978                    _ = timer => {}
  979            }
  980
  981            if let Some(result) = workspace
  982                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
  983                .log_err()
  984            {
  985                result.await.log_err();
  986            }
  987        }));
  988    }
  989}
  990
  991pub enum Event {
  992    PaneAdded(Entity<Pane>),
  993    PaneRemoved,
  994    ItemAdded {
  995        item: Box<dyn ItemHandle>,
  996    },
  997    ItemRemoved,
  998    ActiveItemChanged,
  999    UserSavedItem {
 1000        pane: WeakEntity<Pane>,
 1001        item: Box<dyn WeakItemHandle>,
 1002        save_intent: SaveIntent,
 1003    },
 1004    ContactRequestedJoin(u64),
 1005    WorkspaceCreated(WeakEntity<Workspace>),
 1006    OpenBundledFile {
 1007        text: Cow<'static, str>,
 1008        title: &'static str,
 1009        language: &'static str,
 1010    },
 1011    ZoomChanged,
 1012    ModalOpened,
 1013    ClearActivityIndicator,
 1014}
 1015
 1016#[derive(Debug)]
 1017pub enum OpenVisible {
 1018    All,
 1019    None,
 1020    OnlyFiles,
 1021    OnlyDirectories,
 1022}
 1023
 1024enum WorkspaceLocation {
 1025    // Valid local paths or SSH project to serialize
 1026    Location(SerializedWorkspaceLocation),
 1027    // No valid location found hence clear session id
 1028    DetachFromSession,
 1029    // No valid location found to serialize
 1030    None,
 1031}
 1032
 1033type PromptForNewPath = Box<
 1034    dyn Fn(
 1035        &mut Workspace,
 1036        DirectoryLister,
 1037        &mut Window,
 1038        &mut Context<Workspace>,
 1039    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1040>;
 1041
 1042type PromptForOpenPath = Box<
 1043    dyn Fn(
 1044        &mut Workspace,
 1045        DirectoryLister,
 1046        &mut Window,
 1047        &mut Context<Workspace>,
 1048    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1049>;
 1050
 1051#[derive(Default)]
 1052struct DispatchingKeystrokes {
 1053    dispatched: HashSet<Vec<Keystroke>>,
 1054    queue: VecDeque<Keystroke>,
 1055    task: Option<Shared<Task<()>>>,
 1056}
 1057
 1058/// Collects everything project-related for a certain window opened.
 1059/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1060///
 1061/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1062/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1063/// that can be used to register a global action to be triggered from any place in the window.
 1064pub struct Workspace {
 1065    weak_self: WeakEntity<Self>,
 1066    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1067    zoomed: Option<AnyWeakView>,
 1068    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1069    zoomed_position: Option<DockPosition>,
 1070    center: PaneGroup,
 1071    left_dock: Entity<Dock>,
 1072    bottom_dock: Entity<Dock>,
 1073    right_dock: Entity<Dock>,
 1074    panes: Vec<Entity<Pane>>,
 1075    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1076    active_pane: Entity<Pane>,
 1077    last_active_center_pane: Option<WeakEntity<Pane>>,
 1078    last_active_view_id: Option<proto::ViewId>,
 1079    status_bar: Entity<StatusBar>,
 1080    modal_layer: Entity<ModalLayer>,
 1081    toast_layer: Entity<ToastLayer>,
 1082    titlebar_item: Option<AnyView>,
 1083    notifications: Notifications,
 1084    suppressed_notifications: HashSet<NotificationId>,
 1085    project: Entity<Project>,
 1086    follower_states: HashMap<CollaboratorId, FollowerState>,
 1087    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1088    window_edited: bool,
 1089    dirty_items: HashMap<EntityId, Subscription>,
 1090    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1091    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1092    database_id: Option<WorkspaceId>,
 1093    app_state: Arc<AppState>,
 1094    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1095    _subscriptions: Vec<Subscription>,
 1096    _apply_leader_updates: Task<Result<()>>,
 1097    _observe_current_user: Task<Result<()>>,
 1098    _schedule_serialize_workspace: Option<Task<()>>,
 1099    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1100    pane_history_timestamp: Arc<AtomicUsize>,
 1101    bounds: Bounds<Pixels>,
 1102    pub centered_layout: bool,
 1103    bounds_save_task_queued: Option<Task<()>>,
 1104    on_prompt_for_new_path: Option<PromptForNewPath>,
 1105    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1106    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1107    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1108    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1109    serialized_ssh_project: Option<SerializedSshProject>,
 1110    _items_serializer: Task<Result<()>>,
 1111    session_id: Option<String>,
 1112    scheduled_tasks: Vec<Task<()>>,
 1113}
 1114
 1115impl EventEmitter<Event> for Workspace {}
 1116
 1117#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1118pub struct ViewId {
 1119    pub creator: CollaboratorId,
 1120    pub id: u64,
 1121}
 1122
 1123pub struct FollowerState {
 1124    center_pane: Entity<Pane>,
 1125    dock_pane: Option<Entity<Pane>>,
 1126    active_view_id: Option<ViewId>,
 1127    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1128}
 1129
 1130struct FollowerView {
 1131    view: Box<dyn FollowableItemHandle>,
 1132    location: Option<proto::PanelId>,
 1133}
 1134
 1135impl Workspace {
 1136    const DEFAULT_PADDING: f32 = 0.2;
 1137    const MAX_PADDING: f32 = 0.4;
 1138
 1139    pub fn new(
 1140        workspace_id: Option<WorkspaceId>,
 1141        project: Entity<Project>,
 1142        app_state: Arc<AppState>,
 1143        window: &mut Window,
 1144        cx: &mut Context<Self>,
 1145    ) -> Self {
 1146        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1147            match event {
 1148                project::Event::RemoteIdChanged(_) => {
 1149                    this.update_window_title(window, cx);
 1150                }
 1151
 1152                project::Event::CollaboratorLeft(peer_id) => {
 1153                    this.collaborator_left(*peer_id, window, cx);
 1154                }
 1155
 1156                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1157                    this.update_window_title(window, cx);
 1158                    this.update_ssh_paths(cx);
 1159                    this.serialize_ssh_paths(window, cx);
 1160                    this.serialize_workspace(window, cx);
 1161                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1162                    this.update_history(cx);
 1163                }
 1164
 1165                project::Event::DisconnectedFromHost => {
 1166                    this.update_window_edited(window, cx);
 1167                    let leaders_to_unfollow =
 1168                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1169                    for leader_id in leaders_to_unfollow {
 1170                        this.unfollow(leader_id, window, cx);
 1171                    }
 1172                }
 1173
 1174                project::Event::DisconnectedFromSshRemote => {
 1175                    this.update_window_edited(window, cx);
 1176                }
 1177
 1178                project::Event::Closed => {
 1179                    window.remove_window();
 1180                }
 1181
 1182                project::Event::DeletedEntry(_, entry_id) => {
 1183                    for pane in this.panes.iter() {
 1184                        pane.update(cx, |pane, cx| {
 1185                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1186                        });
 1187                    }
 1188                }
 1189
 1190                project::Event::Toast {
 1191                    notification_id,
 1192                    message,
 1193                } => this.show_notification(
 1194                    NotificationId::named(notification_id.clone()),
 1195                    cx,
 1196                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1197                ),
 1198
 1199                project::Event::HideToast { notification_id } => {
 1200                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1201                }
 1202
 1203                project::Event::LanguageServerPrompt(request) => {
 1204                    struct LanguageServerPrompt;
 1205
 1206                    let mut hasher = DefaultHasher::new();
 1207                    request.lsp_name.as_str().hash(&mut hasher);
 1208                    let id = hasher.finish();
 1209
 1210                    this.show_notification(
 1211                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1212                        cx,
 1213                        |cx| {
 1214                            cx.new(|cx| {
 1215                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1216                            })
 1217                        },
 1218                    );
 1219                }
 1220
 1221                project::Event::AgentLocationChanged => {
 1222                    this.handle_agent_location_changed(window, cx)
 1223                }
 1224
 1225                _ => {}
 1226            }
 1227            cx.notify()
 1228        })
 1229        .detach();
 1230
 1231        cx.subscribe_in(
 1232            &project.read(cx).breakpoint_store(),
 1233            window,
 1234            |workspace, _, event, window, cx| match event {
 1235                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1236                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1237                    workspace.serialize_workspace(window, cx);
 1238                }
 1239                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1240            },
 1241        )
 1242        .detach();
 1243
 1244        cx.on_focus_lost(window, |this, window, cx| {
 1245            let focus_handle = this.focus_handle(cx);
 1246            window.focus(&focus_handle);
 1247        })
 1248        .detach();
 1249
 1250        let weak_handle = cx.entity().downgrade();
 1251        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1252
 1253        let center_pane = cx.new(|cx| {
 1254            let mut center_pane = Pane::new(
 1255                weak_handle.clone(),
 1256                project.clone(),
 1257                pane_history_timestamp.clone(),
 1258                None,
 1259                NewFile.boxed_clone(),
 1260                window,
 1261                cx,
 1262            );
 1263            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1264            center_pane
 1265        });
 1266        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1267            .detach();
 1268
 1269        window.focus(&center_pane.focus_handle(cx));
 1270
 1271        cx.emit(Event::PaneAdded(center_pane.clone()));
 1272
 1273        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1274        app_state.workspace_store.update(cx, |store, _| {
 1275            store.workspaces.insert(window_handle);
 1276        });
 1277
 1278        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1279        let mut connection_status = app_state.client.status();
 1280        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1281            current_user.next().await;
 1282            connection_status.next().await;
 1283            let mut stream =
 1284                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1285
 1286            while stream.recv().await.is_some() {
 1287                this.update(cx, |_, cx| cx.notify())?;
 1288            }
 1289            anyhow::Ok(())
 1290        });
 1291
 1292        // All leader updates are enqueued and then processed in a single task, so
 1293        // that each asynchronous operation can be run in order.
 1294        let (leader_updates_tx, mut leader_updates_rx) =
 1295            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1296        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1297            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1298                Self::process_leader_update(&this, leader_id, update, cx)
 1299                    .await
 1300                    .log_err();
 1301            }
 1302
 1303            Ok(())
 1304        });
 1305
 1306        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1307        let modal_layer = cx.new(|_| ModalLayer::new());
 1308        let toast_layer = cx.new(|_| ToastLayer::new());
 1309        cx.subscribe(
 1310            &modal_layer,
 1311            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1312                cx.emit(Event::ModalOpened);
 1313            },
 1314        )
 1315        .detach();
 1316
 1317        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1318        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1319        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1320        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1321        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1322        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1323        let status_bar = cx.new(|cx| {
 1324            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1325            status_bar.add_left_item(left_dock_buttons, window, cx);
 1326            status_bar.add_right_item(right_dock_buttons, window, cx);
 1327            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1328            status_bar
 1329        });
 1330
 1331        let session_id = app_state.session.read(cx).id().to_owned();
 1332
 1333        let mut active_call = None;
 1334        if let Some(call) = ActiveCall::try_global(cx) {
 1335            let call = call.clone();
 1336            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1337            active_call = Some((call, subscriptions));
 1338        }
 1339
 1340        let (serializable_items_tx, serializable_items_rx) =
 1341            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1342        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1343            Self::serialize_items(&this, serializable_items_rx, cx).await
 1344        });
 1345
 1346        let subscriptions = vec![
 1347            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1348            cx.observe_window_bounds(window, move |this, window, cx| {
 1349                if this.bounds_save_task_queued.is_some() {
 1350                    return;
 1351                }
 1352                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1353                    cx.background_executor()
 1354                        .timer(Duration::from_millis(100))
 1355                        .await;
 1356                    this.update_in(cx, |this, window, cx| {
 1357                        if let Some(display) = window.display(cx) {
 1358                            if let Ok(display_uuid) = display.uuid() {
 1359                                let window_bounds = window.inner_window_bounds();
 1360                                if let Some(database_id) = workspace_id {
 1361                                    cx.background_executor()
 1362                                        .spawn(DB.set_window_open_status(
 1363                                            database_id,
 1364                                            SerializedWindowBounds(window_bounds),
 1365                                            display_uuid,
 1366                                        ))
 1367                                        .detach_and_log_err(cx);
 1368                                }
 1369                            }
 1370                        }
 1371                        this.bounds_save_task_queued.take();
 1372                    })
 1373                    .ok();
 1374                }));
 1375                cx.notify();
 1376            }),
 1377            cx.observe_window_appearance(window, |_, window, cx| {
 1378                let window_appearance = window.appearance();
 1379
 1380                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1381
 1382                ThemeSettings::reload_current_theme(cx);
 1383                ThemeSettings::reload_current_icon_theme(cx);
 1384            }),
 1385            cx.on_release(move |this, cx| {
 1386                this.app_state.workspace_store.update(cx, move |store, _| {
 1387                    store.workspaces.remove(&window_handle.clone());
 1388                })
 1389            }),
 1390        ];
 1391
 1392        cx.defer_in(window, |this, window, cx| {
 1393            this.update_window_title(window, cx);
 1394            this.show_initial_notifications(cx);
 1395        });
 1396        Workspace {
 1397            weak_self: weak_handle.clone(),
 1398            zoomed: None,
 1399            zoomed_position: None,
 1400            previous_dock_drag_coordinates: None,
 1401            center: PaneGroup::new(center_pane.clone()),
 1402            panes: vec![center_pane.clone()],
 1403            panes_by_item: Default::default(),
 1404            active_pane: center_pane.clone(),
 1405            last_active_center_pane: Some(center_pane.downgrade()),
 1406            last_active_view_id: None,
 1407            status_bar,
 1408            modal_layer,
 1409            toast_layer,
 1410            titlebar_item: None,
 1411            notifications: Notifications::default(),
 1412            suppressed_notifications: HashSet::default(),
 1413            left_dock,
 1414            bottom_dock,
 1415            right_dock,
 1416            project: project.clone(),
 1417            follower_states: Default::default(),
 1418            last_leaders_by_pane: Default::default(),
 1419            dispatching_keystrokes: Default::default(),
 1420            window_edited: false,
 1421            dirty_items: Default::default(),
 1422            active_call,
 1423            database_id: workspace_id,
 1424            app_state,
 1425            _observe_current_user,
 1426            _apply_leader_updates,
 1427            _schedule_serialize_workspace: None,
 1428            _schedule_serialize_ssh_paths: None,
 1429            leader_updates_tx,
 1430            _subscriptions: subscriptions,
 1431            pane_history_timestamp,
 1432            workspace_actions: Default::default(),
 1433            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1434            bounds: Default::default(),
 1435            centered_layout: false,
 1436            bounds_save_task_queued: None,
 1437            on_prompt_for_new_path: None,
 1438            on_prompt_for_open_path: None,
 1439            terminal_provider: None,
 1440            debugger_provider: None,
 1441            serializable_items_tx,
 1442            _items_serializer,
 1443            session_id: Some(session_id),
 1444            serialized_ssh_project: None,
 1445            scheduled_tasks: Vec::new(),
 1446        }
 1447    }
 1448
 1449    pub fn new_local(
 1450        abs_paths: Vec<PathBuf>,
 1451        app_state: Arc<AppState>,
 1452        requesting_window: Option<WindowHandle<Workspace>>,
 1453        env: Option<HashMap<String, String>>,
 1454        cx: &mut App,
 1455    ) -> Task<
 1456        anyhow::Result<(
 1457            WindowHandle<Workspace>,
 1458            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1459        )>,
 1460    > {
 1461        let project_handle = Project::local(
 1462            app_state.client.clone(),
 1463            app_state.node_runtime.clone(),
 1464            app_state.user_store.clone(),
 1465            app_state.languages.clone(),
 1466            app_state.fs.clone(),
 1467            env,
 1468            cx,
 1469        );
 1470
 1471        cx.spawn(async move |cx| {
 1472            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1473            for path in abs_paths.into_iter() {
 1474                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1475                    paths_to_open.push(canonical)
 1476                } else {
 1477                    paths_to_open.push(path)
 1478                }
 1479            }
 1480
 1481            let serialized_workspace =
 1482                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1483
 1484            let workspace_location = serialized_workspace
 1485                .as_ref()
 1486                .map(|ws| &ws.location)
 1487                .and_then(|loc| match loc {
 1488                    SerializedWorkspaceLocation::Local(_, order) => {
 1489                        Some((loc.sorted_paths(), order.order()))
 1490                    }
 1491                    _ => None,
 1492                });
 1493
 1494            if let Some((paths, order)) = workspace_location {
 1495                paths_to_open = paths.iter().cloned().collect();
 1496
 1497                if order.iter().enumerate().any(|(i, &j)| i != j) {
 1498                    project_handle
 1499                        .update(cx, |project, cx| {
 1500                            project.set_worktrees_reordered(true, cx);
 1501                        })
 1502                        .log_err();
 1503                }
 1504            }
 1505
 1506            // Get project paths for all of the abs_paths
 1507            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1508                Vec::with_capacity(paths_to_open.len());
 1509
 1510            for path in paths_to_open.into_iter() {
 1511                if let Some((_, project_entry)) = cx
 1512                    .update(|cx| {
 1513                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1514                    })?
 1515                    .await
 1516                    .log_err()
 1517                {
 1518                    project_paths.push((path, Some(project_entry)));
 1519                } else {
 1520                    project_paths.push((path, None));
 1521                }
 1522            }
 1523
 1524            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1525                serialized_workspace.id
 1526            } else {
 1527                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1528            };
 1529
 1530            let toolchains = DB.toolchains(workspace_id).await?;
 1531
 1532            for (toolchain, worktree_id, path) in toolchains {
 1533                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1534                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1535                    continue;
 1536                }
 1537
 1538                project_handle
 1539                    .update(cx, |this, cx| {
 1540                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1541                    })?
 1542                    .await;
 1543            }
 1544            let window = if let Some(window) = requesting_window {
 1545                let centered_layout = serialized_workspace
 1546                    .as_ref()
 1547                    .map(|w| w.centered_layout)
 1548                    .unwrap_or(false);
 1549
 1550                cx.update_window(window.into(), |_, window, cx| {
 1551                    window.replace_root(cx, |window, cx| {
 1552                        let mut workspace = Workspace::new(
 1553                            Some(workspace_id),
 1554                            project_handle.clone(),
 1555                            app_state.clone(),
 1556                            window,
 1557                            cx,
 1558                        );
 1559
 1560                        workspace.centered_layout = centered_layout;
 1561                        workspace
 1562                    });
 1563                })?;
 1564                window
 1565            } else {
 1566                let window_bounds_override = window_bounds_env_override();
 1567
 1568                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1569                    (Some(WindowBounds::Windowed(bounds)), None)
 1570                } else {
 1571                    let restorable_bounds = serialized_workspace
 1572                        .as_ref()
 1573                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1574                        .or_else(|| {
 1575                            let (display, window_bounds) = DB.last_window().log_err()?;
 1576                            Some((display?, window_bounds?))
 1577                        });
 1578
 1579                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1580                        (Some(serialized_status.0), Some(serialized_display))
 1581                    } else {
 1582                        (None, None)
 1583                    }
 1584                };
 1585
 1586                // Use the serialized workspace to construct the new window
 1587                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1588                options.window_bounds = window_bounds;
 1589                let centered_layout = serialized_workspace
 1590                    .as_ref()
 1591                    .map(|w| w.centered_layout)
 1592                    .unwrap_or(false);
 1593                cx.open_window(options, {
 1594                    let app_state = app_state.clone();
 1595                    let project_handle = project_handle.clone();
 1596                    move |window, cx| {
 1597                        cx.new(|cx| {
 1598                            let mut workspace = Workspace::new(
 1599                                Some(workspace_id),
 1600                                project_handle,
 1601                                app_state,
 1602                                window,
 1603                                cx,
 1604                            );
 1605                            workspace.centered_layout = centered_layout;
 1606                            workspace
 1607                        })
 1608                    }
 1609                })?
 1610            };
 1611
 1612            notify_if_database_failed(window, cx);
 1613            let opened_items = window
 1614                .update(cx, |_workspace, window, cx| {
 1615                    open_items(serialized_workspace, project_paths, window, cx)
 1616                })?
 1617                .await
 1618                .unwrap_or_default();
 1619
 1620            window
 1621                .update(cx, |workspace, window, cx| {
 1622                    window.activate_window();
 1623                    workspace.update_history(cx);
 1624                })
 1625                .log_err();
 1626            Ok((window, opened_items))
 1627        })
 1628    }
 1629
 1630    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1631        self.weak_self.clone()
 1632    }
 1633
 1634    pub fn left_dock(&self) -> &Entity<Dock> {
 1635        &self.left_dock
 1636    }
 1637
 1638    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1639        &self.bottom_dock
 1640    }
 1641
 1642    pub fn set_bottom_dock_layout(
 1643        &mut self,
 1644        layout: BottomDockLayout,
 1645        window: &mut Window,
 1646        cx: &mut Context<Self>,
 1647    ) {
 1648        let fs = self.project().read(cx).fs();
 1649        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1650            content.bottom_dock_layout = Some(layout);
 1651        });
 1652
 1653        cx.notify();
 1654        self.serialize_workspace(window, cx);
 1655    }
 1656
 1657    pub fn right_dock(&self) -> &Entity<Dock> {
 1658        &self.right_dock
 1659    }
 1660
 1661    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1662        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1663    }
 1664
 1665    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1666        match position {
 1667            DockPosition::Left => &self.left_dock,
 1668            DockPosition::Bottom => &self.bottom_dock,
 1669            DockPosition::Right => &self.right_dock,
 1670        }
 1671    }
 1672
 1673    pub fn is_edited(&self) -> bool {
 1674        self.window_edited
 1675    }
 1676
 1677    pub fn add_panel<T: Panel>(
 1678        &mut self,
 1679        panel: Entity<T>,
 1680        window: &mut Window,
 1681        cx: &mut Context<Self>,
 1682    ) {
 1683        let focus_handle = panel.panel_focus_handle(cx);
 1684        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1685            .detach();
 1686
 1687        let dock_position = panel.position(window, cx);
 1688        let dock = self.dock_at_position(dock_position);
 1689
 1690        dock.update(cx, |dock, cx| {
 1691            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1692        });
 1693    }
 1694
 1695    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1696        &self.status_bar
 1697    }
 1698
 1699    pub fn app_state(&self) -> &Arc<AppState> {
 1700        &self.app_state
 1701    }
 1702
 1703    pub fn user_store(&self) -> &Entity<UserStore> {
 1704        &self.app_state.user_store
 1705    }
 1706
 1707    pub fn project(&self) -> &Entity<Project> {
 1708        &self.project
 1709    }
 1710
 1711    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1712        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1713
 1714        for pane_handle in &self.panes {
 1715            let pane = pane_handle.read(cx);
 1716
 1717            for entry in pane.activation_history() {
 1718                history.insert(
 1719                    entry.entity_id,
 1720                    history
 1721                        .get(&entry.entity_id)
 1722                        .cloned()
 1723                        .unwrap_or(0)
 1724                        .max(entry.timestamp),
 1725                );
 1726            }
 1727        }
 1728
 1729        history
 1730    }
 1731
 1732    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1733        let mut recent_item: Option<Entity<T>> = None;
 1734        let mut recent_timestamp = 0;
 1735        for pane_handle in &self.panes {
 1736            let pane = pane_handle.read(cx);
 1737            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1738                pane.items().map(|item| (item.item_id(), item)).collect();
 1739            for entry in pane.activation_history() {
 1740                if entry.timestamp > recent_timestamp {
 1741                    if let Some(&item) = item_map.get(&entry.entity_id) {
 1742                        if let Some(typed_item) = item.act_as::<T>(cx) {
 1743                            recent_timestamp = entry.timestamp;
 1744                            recent_item = Some(typed_item);
 1745                        }
 1746                    }
 1747                }
 1748            }
 1749        }
 1750        recent_item
 1751    }
 1752
 1753    pub fn recent_navigation_history_iter(
 1754        &self,
 1755        cx: &App,
 1756    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1757        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1758        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1759
 1760        for pane in &self.panes {
 1761            let pane = pane.read(cx);
 1762
 1763            pane.nav_history()
 1764                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1765                    if let Some(fs_path) = &fs_path {
 1766                        abs_paths_opened
 1767                            .entry(fs_path.clone())
 1768                            .or_default()
 1769                            .insert(project_path.clone());
 1770                    }
 1771                    let timestamp = entry.timestamp;
 1772                    match history.entry(project_path) {
 1773                        hash_map::Entry::Occupied(mut entry) => {
 1774                            let (_, old_timestamp) = entry.get();
 1775                            if &timestamp > old_timestamp {
 1776                                entry.insert((fs_path, timestamp));
 1777                            }
 1778                        }
 1779                        hash_map::Entry::Vacant(entry) => {
 1780                            entry.insert((fs_path, timestamp));
 1781                        }
 1782                    }
 1783                });
 1784
 1785            if let Some(item) = pane.active_item() {
 1786                if let Some(project_path) = item.project_path(cx) {
 1787                    let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1788
 1789                    if let Some(fs_path) = &fs_path {
 1790                        abs_paths_opened
 1791                            .entry(fs_path.clone())
 1792                            .or_default()
 1793                            .insert(project_path.clone());
 1794                    }
 1795
 1796                    history.insert(project_path, (fs_path, std::usize::MAX));
 1797                }
 1798            }
 1799        }
 1800
 1801        history
 1802            .into_iter()
 1803            .sorted_by_key(|(_, (_, order))| *order)
 1804            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1805            .rev()
 1806            .filter(move |(history_path, abs_path)| {
 1807                let latest_project_path_opened = abs_path
 1808                    .as_ref()
 1809                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1810                    .and_then(|project_paths| {
 1811                        project_paths
 1812                            .iter()
 1813                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1814                    });
 1815
 1816                match latest_project_path_opened {
 1817                    Some(latest_project_path_opened) => latest_project_path_opened == history_path,
 1818                    None => true,
 1819                }
 1820            })
 1821    }
 1822
 1823    pub fn recent_navigation_history(
 1824        &self,
 1825        limit: Option<usize>,
 1826        cx: &App,
 1827    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1828        self.recent_navigation_history_iter(cx)
 1829            .take(limit.unwrap_or(usize::MAX))
 1830            .collect()
 1831    }
 1832
 1833    fn navigate_history(
 1834        &mut self,
 1835        pane: WeakEntity<Pane>,
 1836        mode: NavigationMode,
 1837        window: &mut Window,
 1838        cx: &mut Context<Workspace>,
 1839    ) -> Task<Result<()>> {
 1840        let to_load = if let Some(pane) = pane.upgrade() {
 1841            pane.update(cx, |pane, cx| {
 1842                window.focus(&pane.focus_handle(cx));
 1843                loop {
 1844                    // Retrieve the weak item handle from the history.
 1845                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1846
 1847                    // If the item is still present in this pane, then activate it.
 1848                    if let Some(index) = entry
 1849                        .item
 1850                        .upgrade()
 1851                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1852                    {
 1853                        let prev_active_item_index = pane.active_item_index();
 1854                        pane.nav_history_mut().set_mode(mode);
 1855                        pane.activate_item(index, true, true, window, cx);
 1856                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1857
 1858                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1859                        if let Some(data) = entry.data {
 1860                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1861                        }
 1862
 1863                        if navigated {
 1864                            break None;
 1865                        }
 1866                    } else {
 1867                        // If the item is no longer present in this pane, then retrieve its
 1868                        // path info in order to reopen it.
 1869                        break pane
 1870                            .nav_history()
 1871                            .path_for_item(entry.item.id())
 1872                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1873                    }
 1874                }
 1875            })
 1876        } else {
 1877            None
 1878        };
 1879
 1880        if let Some((project_path, abs_path, entry)) = to_load {
 1881            // If the item was no longer present, then load it again from its previous path, first try the local path
 1882            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1883
 1884            cx.spawn_in(window, async move  |workspace, cx| {
 1885                let open_by_project_path = open_by_project_path.await;
 1886                let mut navigated = false;
 1887                match open_by_project_path
 1888                    .with_context(|| format!("Navigating to {project_path:?}"))
 1889                {
 1890                    Ok((project_entry_id, build_item)) => {
 1891                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1892                            pane.nav_history_mut().set_mode(mode);
 1893                            pane.active_item().map(|p| p.item_id())
 1894                        })?;
 1895
 1896                        pane.update_in(cx, |pane, window, cx| {
 1897                            let item = pane.open_item(
 1898                                project_entry_id,
 1899                                project_path,
 1900                                true,
 1901                                entry.is_preview,
 1902                                true,
 1903                                None,
 1904                                window, cx,
 1905                                build_item,
 1906                            );
 1907                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1908                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1909                            if let Some(data) = entry.data {
 1910                                navigated |= item.navigate(data, window, cx);
 1911                            }
 1912                        })?;
 1913                    }
 1914                    Err(open_by_project_path_e) => {
 1915                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1916                        // and its worktree is now dropped
 1917                        if let Some(abs_path) = abs_path {
 1918                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1919                                pane.nav_history_mut().set_mode(mode);
 1920                                pane.active_item().map(|p| p.item_id())
 1921                            })?;
 1922                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1923                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1924                            })?;
 1925                            match open_by_abs_path
 1926                                .await
 1927                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1928                            {
 1929                                Ok(item) => {
 1930                                    pane.update_in(cx, |pane, window, cx| {
 1931                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1932                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1933                                        if let Some(data) = entry.data {
 1934                                            navigated |= item.navigate(data, window, cx);
 1935                                        }
 1936                                    })?;
 1937                                }
 1938                                Err(open_by_abs_path_e) => {
 1939                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1940                                }
 1941                            }
 1942                        }
 1943                    }
 1944                }
 1945
 1946                if !navigated {
 1947                    workspace
 1948                        .update_in(cx, |workspace, window, cx| {
 1949                            Self::navigate_history(workspace, pane, mode, window, cx)
 1950                        })?
 1951                        .await?;
 1952                }
 1953
 1954                Ok(())
 1955            })
 1956        } else {
 1957            Task::ready(Ok(()))
 1958        }
 1959    }
 1960
 1961    pub fn go_back(
 1962        &mut self,
 1963        pane: WeakEntity<Pane>,
 1964        window: &mut Window,
 1965        cx: &mut Context<Workspace>,
 1966    ) -> Task<Result<()>> {
 1967        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1968    }
 1969
 1970    pub fn go_forward(
 1971        &mut self,
 1972        pane: WeakEntity<Pane>,
 1973        window: &mut Window,
 1974        cx: &mut Context<Workspace>,
 1975    ) -> Task<Result<()>> {
 1976        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1977    }
 1978
 1979    pub fn reopen_closed_item(
 1980        &mut self,
 1981        window: &mut Window,
 1982        cx: &mut Context<Workspace>,
 1983    ) -> Task<Result<()>> {
 1984        self.navigate_history(
 1985            self.active_pane().downgrade(),
 1986            NavigationMode::ReopeningClosedItem,
 1987            window,
 1988            cx,
 1989        )
 1990    }
 1991
 1992    pub fn client(&self) -> &Arc<Client> {
 1993        &self.app_state.client
 1994    }
 1995
 1996    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 1997        self.titlebar_item = Some(item);
 1998        cx.notify();
 1999    }
 2000
 2001    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2002        self.on_prompt_for_new_path = Some(prompt)
 2003    }
 2004
 2005    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2006        self.on_prompt_for_open_path = Some(prompt)
 2007    }
 2008
 2009    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2010        self.terminal_provider = Some(Box::new(provider));
 2011    }
 2012
 2013    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2014        self.debugger_provider = Some(Arc::new(provider));
 2015    }
 2016
 2017    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2018        self.debugger_provider.clone()
 2019    }
 2020
 2021    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
 2022        self.serialized_ssh_project.clone()
 2023    }
 2024
 2025    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
 2026        self.serialized_ssh_project = Some(serialized_ssh_project);
 2027    }
 2028
 2029    pub fn prompt_for_open_path(
 2030        &mut self,
 2031        path_prompt_options: PathPromptOptions,
 2032        lister: DirectoryLister,
 2033        window: &mut Window,
 2034        cx: &mut Context<Self>,
 2035    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2036        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2037            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2038            let rx = prompt(self, lister, window, cx);
 2039            self.on_prompt_for_open_path = Some(prompt);
 2040            rx
 2041        } else {
 2042            let (tx, rx) = oneshot::channel();
 2043            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2044
 2045            cx.spawn_in(window, async move |workspace, cx| {
 2046                let Ok(result) = abs_path.await else {
 2047                    return Ok(());
 2048                };
 2049
 2050                match result {
 2051                    Ok(result) => {
 2052                        tx.send(result).ok();
 2053                    }
 2054                    Err(err) => {
 2055                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2056                            workspace.show_portal_error(err.to_string(), cx);
 2057                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2058                            let rx = prompt(workspace, lister, window, cx);
 2059                            workspace.on_prompt_for_open_path = Some(prompt);
 2060                            rx
 2061                        })?;
 2062                        if let Ok(path) = rx.await {
 2063                            tx.send(path).ok();
 2064                        }
 2065                    }
 2066                };
 2067                anyhow::Ok(())
 2068            })
 2069            .detach();
 2070
 2071            rx
 2072        }
 2073    }
 2074
 2075    pub fn prompt_for_new_path(
 2076        &mut self,
 2077        lister: DirectoryLister,
 2078        window: &mut Window,
 2079        cx: &mut Context<Self>,
 2080    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2081        if self.project.read(cx).is_via_collab()
 2082            || self.project.read(cx).is_via_ssh()
 2083            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2084        {
 2085            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2086            let rx = prompt(self, lister, window, cx);
 2087            self.on_prompt_for_new_path = Some(prompt);
 2088            return rx;
 2089        }
 2090
 2091        let (tx, rx) = oneshot::channel();
 2092        cx.spawn_in(window, async move |workspace, cx| {
 2093            let abs_path = workspace.update(cx, |workspace, cx| {
 2094                let relative_to = workspace
 2095                    .most_recent_active_path(cx)
 2096                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2097                    .or_else(|| {
 2098                        let project = workspace.project.read(cx);
 2099                        project.visible_worktrees(cx).find_map(|worktree| {
 2100                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2101                        })
 2102                    })
 2103                    .or_else(std::env::home_dir)
 2104                    .unwrap_or_else(|| PathBuf::from(""));
 2105                cx.prompt_for_new_path(&relative_to)
 2106            })?;
 2107            let abs_path = match abs_path.await? {
 2108                Ok(path) => path,
 2109                Err(err) => {
 2110                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2111                        workspace.show_portal_error(err.to_string(), cx);
 2112
 2113                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2114                        let rx = prompt(workspace, lister, window, cx);
 2115                        workspace.on_prompt_for_new_path = Some(prompt);
 2116                        rx
 2117                    })?;
 2118                    if let Ok(path) = rx.await {
 2119                        tx.send(path).ok();
 2120                    }
 2121                    return anyhow::Ok(());
 2122                }
 2123            };
 2124
 2125            tx.send(abs_path.map(|path| vec![path])).ok();
 2126            anyhow::Ok(())
 2127        })
 2128        .detach();
 2129
 2130        rx
 2131    }
 2132
 2133    pub fn titlebar_item(&self) -> Option<AnyView> {
 2134        self.titlebar_item.clone()
 2135    }
 2136
 2137    /// Call the given callback with a workspace whose project is local.
 2138    ///
 2139    /// If the given workspace has a local project, then it will be passed
 2140    /// to the callback. Otherwise, a new empty window will be created.
 2141    pub fn with_local_workspace<T, F>(
 2142        &mut self,
 2143        window: &mut Window,
 2144        cx: &mut Context<Self>,
 2145        callback: F,
 2146    ) -> Task<Result<T>>
 2147    where
 2148        T: 'static,
 2149        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2150    {
 2151        if self.project.read(cx).is_local() {
 2152            Task::ready(Ok(callback(self, window, cx)))
 2153        } else {
 2154            let env = self.project.read(cx).cli_environment(cx);
 2155            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2156            cx.spawn_in(window, async move |_vh, cx| {
 2157                let (workspace, _) = task.await?;
 2158                workspace.update(cx, callback)
 2159            })
 2160        }
 2161    }
 2162
 2163    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2164        self.project.read(cx).worktrees(cx)
 2165    }
 2166
 2167    pub fn visible_worktrees<'a>(
 2168        &self,
 2169        cx: &'a App,
 2170    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2171        self.project.read(cx).visible_worktrees(cx)
 2172    }
 2173
 2174    #[cfg(any(test, feature = "test-support"))]
 2175    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2176        let futures = self
 2177            .worktrees(cx)
 2178            .filter_map(|worktree| worktree.read(cx).as_local())
 2179            .map(|worktree| worktree.scan_complete())
 2180            .collect::<Vec<_>>();
 2181        async move {
 2182            for future in futures {
 2183                future.await;
 2184            }
 2185        }
 2186    }
 2187
 2188    pub fn close_global(_: &CloseWindow, cx: &mut App) {
 2189        cx.defer(|cx| {
 2190            cx.windows().iter().find(|window| {
 2191                window
 2192                    .update(cx, |_, window, _| {
 2193                        if window.is_window_active() {
 2194                            //This can only get called when the window's project connection has been lost
 2195                            //so we don't need to prompt the user for anything and instead just close the window
 2196                            window.remove_window();
 2197                            true
 2198                        } else {
 2199                            false
 2200                        }
 2201                    })
 2202                    .unwrap_or(false)
 2203            });
 2204        });
 2205    }
 2206
 2207    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2208        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2209        cx.spawn_in(window, async move |_, cx| {
 2210            if prepare.await? {
 2211                cx.update(|window, _cx| window.remove_window())?;
 2212            }
 2213            anyhow::Ok(())
 2214        })
 2215        .detach_and_log_err(cx)
 2216    }
 2217
 2218    pub fn move_focused_panel_to_next_position(
 2219        &mut self,
 2220        _: &MoveFocusedPanelToNextPosition,
 2221        window: &mut Window,
 2222        cx: &mut Context<Self>,
 2223    ) {
 2224        let docks = self.all_docks();
 2225        let active_dock = docks
 2226            .into_iter()
 2227            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2228
 2229        if let Some(dock) = active_dock {
 2230            dock.update(cx, |dock, cx| {
 2231                let active_panel = dock
 2232                    .active_panel()
 2233                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2234
 2235                if let Some(panel) = active_panel {
 2236                    panel.move_to_next_position(window, cx);
 2237                }
 2238            })
 2239        }
 2240    }
 2241
 2242    pub fn prepare_to_close(
 2243        &mut self,
 2244        close_intent: CloseIntent,
 2245        window: &mut Window,
 2246        cx: &mut Context<Self>,
 2247    ) -> Task<Result<bool>> {
 2248        let active_call = self.active_call().cloned();
 2249
 2250        // On Linux and Windows, closing the last window should restore the last workspace.
 2251        let save_last_workspace = cfg!(not(target_os = "macos"))
 2252            && close_intent != CloseIntent::ReplaceWindow
 2253            && cx.windows().len() == 1;
 2254
 2255        cx.spawn_in(window, async move |this, cx| {
 2256            let workspace_count = cx.update(|_window, cx| {
 2257                cx.windows()
 2258                    .iter()
 2259                    .filter(|window| window.downcast::<Workspace>().is_some())
 2260                    .count()
 2261            })?;
 2262
 2263            if let Some(active_call) = active_call {
 2264                if close_intent != CloseIntent::Quit
 2265                    && workspace_count == 1
 2266                    && active_call.read_with(cx, |call, _| call.room().is_some())?
 2267                {
 2268                    let answer = cx.update(|window, cx| {
 2269                        window.prompt(
 2270                            PromptLevel::Warning,
 2271                            "Do you want to leave the current call?",
 2272                            None,
 2273                            &["Close window and hang up", "Cancel"],
 2274                            cx,
 2275                        )
 2276                    })?;
 2277
 2278                    if answer.await.log_err() == Some(1) {
 2279                        return anyhow::Ok(false);
 2280                    } else {
 2281                        active_call
 2282                            .update(cx, |call, cx| call.hang_up(cx))?
 2283                            .await
 2284                            .log_err();
 2285                    }
 2286                }
 2287            }
 2288
 2289            let save_result = this
 2290                .update_in(cx, |this, window, cx| {
 2291                    this.save_all_internal(SaveIntent::Close, window, cx)
 2292                })?
 2293                .await;
 2294
 2295            // If we're not quitting, but closing, we remove the workspace from
 2296            // the current session.
 2297            if close_intent != CloseIntent::Quit
 2298                && !save_last_workspace
 2299                && save_result.as_ref().map_or(false, |&res| res)
 2300            {
 2301                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2302                    .await;
 2303            }
 2304
 2305            save_result
 2306        })
 2307    }
 2308
 2309    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2310        self.save_all_internal(
 2311            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2312            window,
 2313            cx,
 2314        )
 2315        .detach_and_log_err(cx);
 2316    }
 2317
 2318    fn send_keystrokes(
 2319        &mut self,
 2320        action: &SendKeystrokes,
 2321        window: &mut Window,
 2322        cx: &mut Context<Self>,
 2323    ) {
 2324        let keystrokes: Vec<Keystroke> = action
 2325            .0
 2326            .split(' ')
 2327            .flat_map(|k| Keystroke::parse(k).log_err())
 2328            .collect();
 2329        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2330    }
 2331
 2332    pub fn send_keystrokes_impl(
 2333        &mut self,
 2334        keystrokes: Vec<Keystroke>,
 2335        window: &mut Window,
 2336        cx: &mut Context<Self>,
 2337    ) -> Shared<Task<()>> {
 2338        let mut state = self.dispatching_keystrokes.borrow_mut();
 2339        if !state.dispatched.insert(keystrokes.clone()) {
 2340            cx.propagate();
 2341            return state.task.clone().unwrap();
 2342        }
 2343
 2344        state.queue.extend(keystrokes);
 2345
 2346        let keystrokes = self.dispatching_keystrokes.clone();
 2347        if state.task.is_none() {
 2348            state.task = Some(
 2349                window
 2350                    .spawn(cx, async move |cx| {
 2351                        // limit to 100 keystrokes to avoid infinite recursion.
 2352                        for _ in 0..100 {
 2353                            let mut state = keystrokes.borrow_mut();
 2354                            let Some(keystroke) = state.queue.pop_front() else {
 2355                                state.dispatched.clear();
 2356                                state.task.take();
 2357                                return;
 2358                            };
 2359                            drop(state);
 2360                            cx.update(|window, cx| {
 2361                                let focused = window.focused(cx);
 2362                                window.dispatch_keystroke(keystroke.clone(), cx);
 2363                                if window.focused(cx) != focused {
 2364                                    // dispatch_keystroke may cause the focus to change.
 2365                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2366                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2367                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2368                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2369                                    // )
 2370                                    window.draw(cx).clear();
 2371                                }
 2372                            })
 2373                            .ok();
 2374                        }
 2375
 2376                        *keystrokes.borrow_mut() = Default::default();
 2377                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2378                    })
 2379                    .shared(),
 2380            );
 2381        }
 2382        state.task.clone().unwrap()
 2383    }
 2384
 2385    fn save_all_internal(
 2386        &mut self,
 2387        mut save_intent: SaveIntent,
 2388        window: &mut Window,
 2389        cx: &mut Context<Self>,
 2390    ) -> Task<Result<bool>> {
 2391        if self.project.read(cx).is_disconnected(cx) {
 2392            return Task::ready(Ok(true));
 2393        }
 2394        let dirty_items = self
 2395            .panes
 2396            .iter()
 2397            .flat_map(|pane| {
 2398                pane.read(cx).items().filter_map(|item| {
 2399                    if item.is_dirty(cx) {
 2400                        item.tab_content_text(0, cx);
 2401                        Some((pane.downgrade(), item.boxed_clone()))
 2402                    } else {
 2403                        None
 2404                    }
 2405                })
 2406            })
 2407            .collect::<Vec<_>>();
 2408
 2409        let project = self.project.clone();
 2410        cx.spawn_in(window, async move |workspace, cx| {
 2411            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2412                let (serialize_tasks, remaining_dirty_items) =
 2413                    workspace.update_in(cx, |workspace, window, cx| {
 2414                        let mut remaining_dirty_items = Vec::new();
 2415                        let mut serialize_tasks = Vec::new();
 2416                        for (pane, item) in dirty_items {
 2417                            if let Some(task) = item
 2418                                .to_serializable_item_handle(cx)
 2419                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2420                            {
 2421                                serialize_tasks.push(task);
 2422                            } else {
 2423                                remaining_dirty_items.push((pane, item));
 2424                            }
 2425                        }
 2426                        (serialize_tasks, remaining_dirty_items)
 2427                    })?;
 2428
 2429                futures::future::try_join_all(serialize_tasks).await?;
 2430
 2431                if remaining_dirty_items.len() > 1 {
 2432                    let answer = workspace.update_in(cx, |_, window, cx| {
 2433                        let detail = Pane::file_names_for_prompt(
 2434                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2435                            cx,
 2436                        );
 2437                        window.prompt(
 2438                            PromptLevel::Warning,
 2439                            &"Do you want to save all changes in the following files?",
 2440                            Some(&detail),
 2441                            &["Save all", "Discard all", "Cancel"],
 2442                            cx,
 2443                        )
 2444                    })?;
 2445                    match answer.await.log_err() {
 2446                        Some(0) => save_intent = SaveIntent::SaveAll,
 2447                        Some(1) => save_intent = SaveIntent::Skip,
 2448                        Some(2) => return Ok(false),
 2449                        _ => {}
 2450                    }
 2451                }
 2452
 2453                remaining_dirty_items
 2454            } else {
 2455                dirty_items
 2456            };
 2457
 2458            for (pane, item) in dirty_items {
 2459                let (singleton, project_entry_ids) =
 2460                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2461                if singleton || !project_entry_ids.is_empty() {
 2462                    if !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await? {
 2463                        return Ok(false);
 2464                    }
 2465                }
 2466            }
 2467            Ok(true)
 2468        })
 2469    }
 2470
 2471    pub fn open_workspace_for_paths(
 2472        &mut self,
 2473        replace_current_window: bool,
 2474        paths: Vec<PathBuf>,
 2475        window: &mut Window,
 2476        cx: &mut Context<Self>,
 2477    ) -> Task<Result<()>> {
 2478        let window_handle = window.window_handle().downcast::<Self>();
 2479        let is_remote = self.project.read(cx).is_via_collab();
 2480        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2481        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2482
 2483        let window_to_replace = if replace_current_window {
 2484            window_handle
 2485        } else if is_remote || has_worktree || has_dirty_items {
 2486            None
 2487        } else {
 2488            window_handle
 2489        };
 2490        let app_state = self.app_state.clone();
 2491
 2492        cx.spawn(async move |_, cx| {
 2493            cx.update(|cx| {
 2494                open_paths(
 2495                    &paths,
 2496                    app_state,
 2497                    OpenOptions {
 2498                        replace_window: window_to_replace,
 2499                        ..Default::default()
 2500                    },
 2501                    cx,
 2502                )
 2503            })?
 2504            .await?;
 2505            Ok(())
 2506        })
 2507    }
 2508
 2509    #[allow(clippy::type_complexity)]
 2510    pub fn open_paths(
 2511        &mut self,
 2512        mut abs_paths: Vec<PathBuf>,
 2513        options: OpenOptions,
 2514        pane: Option<WeakEntity<Pane>>,
 2515        window: &mut Window,
 2516        cx: &mut Context<Self>,
 2517    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2518        log::info!("open paths {abs_paths:?}");
 2519
 2520        let fs = self.app_state.fs.clone();
 2521
 2522        // Sort the paths to ensure we add worktrees for parents before their children.
 2523        abs_paths.sort_unstable();
 2524        cx.spawn_in(window, async move |this, cx| {
 2525            let mut tasks = Vec::with_capacity(abs_paths.len());
 2526
 2527            for abs_path in &abs_paths {
 2528                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2529                    OpenVisible::All => Some(true),
 2530                    OpenVisible::None => Some(false),
 2531                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2532                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2533                        Some(None) => Some(true),
 2534                        None => None,
 2535                    },
 2536                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2537                        Some(Some(metadata)) => Some(metadata.is_dir),
 2538                        Some(None) => Some(false),
 2539                        None => None,
 2540                    },
 2541                };
 2542                let project_path = match visible {
 2543                    Some(visible) => match this
 2544                        .update(cx, |this, cx| {
 2545                            Workspace::project_path_for_path(
 2546                                this.project.clone(),
 2547                                abs_path,
 2548                                visible,
 2549                                cx,
 2550                            )
 2551                        })
 2552                        .log_err()
 2553                    {
 2554                        Some(project_path) => project_path.await.log_err(),
 2555                        None => None,
 2556                    },
 2557                    None => None,
 2558                };
 2559
 2560                let this = this.clone();
 2561                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2562                let fs = fs.clone();
 2563                let pane = pane.clone();
 2564                let task = cx.spawn(async move |cx| {
 2565                    let (worktree, project_path) = project_path?;
 2566                    if fs.is_dir(&abs_path).await {
 2567                        this.update(cx, |workspace, cx| {
 2568                            let worktree = worktree.read(cx);
 2569                            let worktree_abs_path = worktree.abs_path();
 2570                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2571                                worktree.root_entry()
 2572                            } else {
 2573                                abs_path
 2574                                    .strip_prefix(worktree_abs_path.as_ref())
 2575                                    .ok()
 2576                                    .and_then(|relative_path| {
 2577                                        worktree.entry_for_path(relative_path)
 2578                                    })
 2579                            }
 2580                            .map(|entry| entry.id);
 2581                            if let Some(entry_id) = entry_id {
 2582                                workspace.project.update(cx, |_, cx| {
 2583                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2584                                })
 2585                            }
 2586                        })
 2587                        .ok()?;
 2588                        None
 2589                    } else {
 2590                        Some(
 2591                            this.update_in(cx, |this, window, cx| {
 2592                                this.open_path(
 2593                                    project_path,
 2594                                    pane,
 2595                                    options.focus.unwrap_or(true),
 2596                                    window,
 2597                                    cx,
 2598                                )
 2599                            })
 2600                            .ok()?
 2601                            .await,
 2602                        )
 2603                    }
 2604                });
 2605                tasks.push(task);
 2606            }
 2607
 2608            futures::future::join_all(tasks).await
 2609        })
 2610    }
 2611
 2612    pub fn open_resolved_path(
 2613        &mut self,
 2614        path: ResolvedPath,
 2615        window: &mut Window,
 2616        cx: &mut Context<Self>,
 2617    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2618        match path {
 2619            ResolvedPath::ProjectPath { project_path, .. } => {
 2620                self.open_path(project_path, None, true, window, cx)
 2621            }
 2622            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2623                path,
 2624                OpenOptions {
 2625                    visible: Some(OpenVisible::None),
 2626                    ..Default::default()
 2627                },
 2628                window,
 2629                cx,
 2630            ),
 2631        }
 2632    }
 2633
 2634    pub fn absolute_path_of_worktree(
 2635        &self,
 2636        worktree_id: WorktreeId,
 2637        cx: &mut Context<Self>,
 2638    ) -> Option<PathBuf> {
 2639        self.project
 2640            .read(cx)
 2641            .worktree_for_id(worktree_id, cx)
 2642            // TODO: use `abs_path` or `root_dir`
 2643            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2644    }
 2645
 2646    fn add_folder_to_project(
 2647        &mut self,
 2648        _: &AddFolderToProject,
 2649        window: &mut Window,
 2650        cx: &mut Context<Self>,
 2651    ) {
 2652        let project = self.project.read(cx);
 2653        if project.is_via_collab() {
 2654            self.show_error(
 2655                &anyhow!("You cannot add folders to someone else's project"),
 2656                cx,
 2657            );
 2658            return;
 2659        }
 2660        let paths = self.prompt_for_open_path(
 2661            PathPromptOptions {
 2662                files: false,
 2663                directories: true,
 2664                multiple: true,
 2665            },
 2666            DirectoryLister::Project(self.project.clone()),
 2667            window,
 2668            cx,
 2669        );
 2670        cx.spawn_in(window, async move |this, cx| {
 2671            if let Some(paths) = paths.await.log_err().flatten() {
 2672                let results = this
 2673                    .update_in(cx, |this, window, cx| {
 2674                        this.open_paths(
 2675                            paths,
 2676                            OpenOptions {
 2677                                visible: Some(OpenVisible::All),
 2678                                ..Default::default()
 2679                            },
 2680                            None,
 2681                            window,
 2682                            cx,
 2683                        )
 2684                    })?
 2685                    .await;
 2686                for result in results.into_iter().flatten() {
 2687                    result.log_err();
 2688                }
 2689            }
 2690            anyhow::Ok(())
 2691        })
 2692        .detach_and_log_err(cx);
 2693    }
 2694
 2695    pub fn project_path_for_path(
 2696        project: Entity<Project>,
 2697        abs_path: &Path,
 2698        visible: bool,
 2699        cx: &mut App,
 2700    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2701        let entry = project.update(cx, |project, cx| {
 2702            project.find_or_create_worktree(abs_path, visible, cx)
 2703        });
 2704        cx.spawn(async move |cx| {
 2705            let (worktree, path) = entry.await?;
 2706            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2707            Ok((
 2708                worktree,
 2709                ProjectPath {
 2710                    worktree_id,
 2711                    path: path.into(),
 2712                },
 2713            ))
 2714        })
 2715    }
 2716
 2717    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2718        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2719    }
 2720
 2721    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2722        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2723    }
 2724
 2725    pub fn items_of_type<'a, T: Item>(
 2726        &'a self,
 2727        cx: &'a App,
 2728    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2729        self.panes
 2730            .iter()
 2731            .flat_map(|pane| pane.read(cx).items_of_type())
 2732    }
 2733
 2734    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2735        self.active_pane().read(cx).active_item()
 2736    }
 2737
 2738    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2739        let item = self.active_item(cx)?;
 2740        item.to_any().downcast::<I>().ok()
 2741    }
 2742
 2743    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2744        self.active_item(cx).and_then(|item| item.project_path(cx))
 2745    }
 2746
 2747    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2748        self.recent_navigation_history_iter(cx)
 2749            .filter_map(|(path, abs_path)| {
 2750                let worktree = self
 2751                    .project
 2752                    .read(cx)
 2753                    .worktree_for_id(path.worktree_id, cx)?;
 2754                if worktree.read(cx).is_visible() {
 2755                    abs_path
 2756                } else {
 2757                    None
 2758                }
 2759            })
 2760            .next()
 2761    }
 2762
 2763    pub fn save_active_item(
 2764        &mut self,
 2765        save_intent: SaveIntent,
 2766        window: &mut Window,
 2767        cx: &mut App,
 2768    ) -> Task<Result<()>> {
 2769        let project = self.project.clone();
 2770        let pane = self.active_pane();
 2771        let item = pane.read(cx).active_item();
 2772        let pane = pane.downgrade();
 2773
 2774        window.spawn(cx, async move |mut cx| {
 2775            if let Some(item) = item {
 2776                Pane::save_item(project, &pane, item.as_ref(), save_intent, &mut cx)
 2777                    .await
 2778                    .map(|_| ())
 2779            } else {
 2780                Ok(())
 2781            }
 2782        })
 2783    }
 2784
 2785    pub fn close_inactive_items_and_panes(
 2786        &mut self,
 2787        action: &CloseInactiveTabsAndPanes,
 2788        window: &mut Window,
 2789        cx: &mut Context<Self>,
 2790    ) {
 2791        if let Some(task) = self.close_all_internal(
 2792            true,
 2793            action.save_intent.unwrap_or(SaveIntent::Close),
 2794            window,
 2795            cx,
 2796        ) {
 2797            task.detach_and_log_err(cx)
 2798        }
 2799    }
 2800
 2801    pub fn close_all_items_and_panes(
 2802        &mut self,
 2803        action: &CloseAllItemsAndPanes,
 2804        window: &mut Window,
 2805        cx: &mut Context<Self>,
 2806    ) {
 2807        if let Some(task) = self.close_all_internal(
 2808            false,
 2809            action.save_intent.unwrap_or(SaveIntent::Close),
 2810            window,
 2811            cx,
 2812        ) {
 2813            task.detach_and_log_err(cx)
 2814        }
 2815    }
 2816
 2817    fn close_all_internal(
 2818        &mut self,
 2819        retain_active_pane: bool,
 2820        save_intent: SaveIntent,
 2821        window: &mut Window,
 2822        cx: &mut Context<Self>,
 2823    ) -> Option<Task<Result<()>>> {
 2824        let current_pane = self.active_pane();
 2825
 2826        let mut tasks = Vec::new();
 2827
 2828        if retain_active_pane {
 2829            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2830                pane.close_other_items(
 2831                    &CloseOtherItems {
 2832                        save_intent: None,
 2833                        close_pinned: false,
 2834                    },
 2835                    None,
 2836                    window,
 2837                    cx,
 2838                )
 2839            });
 2840
 2841            tasks.push(current_pane_close);
 2842        }
 2843
 2844        for pane in self.panes() {
 2845            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2846                continue;
 2847            }
 2848
 2849            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2850                pane.close_all_items(
 2851                    &CloseAllItems {
 2852                        save_intent: Some(save_intent),
 2853                        close_pinned: false,
 2854                    },
 2855                    window,
 2856                    cx,
 2857                )
 2858            });
 2859
 2860            tasks.push(close_pane_items)
 2861        }
 2862
 2863        if tasks.is_empty() {
 2864            None
 2865        } else {
 2866            Some(cx.spawn_in(window, async move |_, _| {
 2867                for task in tasks {
 2868                    task.await?
 2869                }
 2870                Ok(())
 2871            }))
 2872        }
 2873    }
 2874
 2875    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2876        self.dock_at_position(position).read(cx).is_open()
 2877    }
 2878
 2879    pub fn toggle_dock(
 2880        &mut self,
 2881        dock_side: DockPosition,
 2882        window: &mut Window,
 2883        cx: &mut Context<Self>,
 2884    ) {
 2885        let dock = self.dock_at_position(dock_side);
 2886        let mut focus_center = false;
 2887        let mut reveal_dock = false;
 2888        dock.update(cx, |dock, cx| {
 2889            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2890            let was_visible = dock.is_open() && !other_is_zoomed;
 2891            dock.set_open(!was_visible, window, cx);
 2892
 2893            if dock.active_panel().is_none() {
 2894                let Some(panel_ix) = dock
 2895                    .first_enabled_panel_idx(cx)
 2896                    .log_with_level(log::Level::Info)
 2897                else {
 2898                    return;
 2899                };
 2900                dock.activate_panel(panel_ix, window, cx);
 2901            }
 2902
 2903            if let Some(active_panel) = dock.active_panel() {
 2904                if was_visible {
 2905                    if active_panel
 2906                        .panel_focus_handle(cx)
 2907                        .contains_focused(window, cx)
 2908                    {
 2909                        focus_center = true;
 2910                    }
 2911                } else {
 2912                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2913                    window.focus(focus_handle);
 2914                    reveal_dock = true;
 2915                }
 2916            }
 2917        });
 2918
 2919        if reveal_dock {
 2920            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2921        }
 2922
 2923        if focus_center {
 2924            self.active_pane
 2925                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2926        }
 2927
 2928        cx.notify();
 2929        self.serialize_workspace(window, cx);
 2930    }
 2931
 2932    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2933        self.all_docks().into_iter().find(|&dock| {
 2934            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2935        })
 2936    }
 2937
 2938    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2939        if let Some(dock) = self.active_dock(window, cx) {
 2940            dock.update(cx, |dock, cx| {
 2941                dock.set_open(false, window, cx);
 2942            });
 2943            return true;
 2944        }
 2945        false
 2946    }
 2947
 2948    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2949        for dock in self.all_docks() {
 2950            dock.update(cx, |dock, cx| {
 2951                dock.set_open(false, window, cx);
 2952            });
 2953        }
 2954
 2955        cx.focus_self(window);
 2956        cx.notify();
 2957        self.serialize_workspace(window, cx);
 2958    }
 2959
 2960    /// Transfer focus to the panel of the given type.
 2961    pub fn focus_panel<T: Panel>(
 2962        &mut self,
 2963        window: &mut Window,
 2964        cx: &mut Context<Self>,
 2965    ) -> Option<Entity<T>> {
 2966        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2967        panel.to_any().downcast().ok()
 2968    }
 2969
 2970    /// Focus the panel of the given type if it isn't already focused. If it is
 2971    /// already focused, then transfer focus back to the workspace center.
 2972    pub fn toggle_panel_focus<T: Panel>(
 2973        &mut self,
 2974        window: &mut Window,
 2975        cx: &mut Context<Self>,
 2976    ) -> bool {
 2977        let mut did_focus_panel = false;
 2978        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 2979            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 2980            did_focus_panel
 2981        });
 2982        did_focus_panel
 2983    }
 2984
 2985    pub fn activate_panel_for_proto_id(
 2986        &mut self,
 2987        panel_id: PanelId,
 2988        window: &mut Window,
 2989        cx: &mut Context<Self>,
 2990    ) -> Option<Arc<dyn PanelHandle>> {
 2991        let mut panel = None;
 2992        for dock in self.all_docks() {
 2993            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 2994                panel = dock.update(cx, |dock, cx| {
 2995                    dock.activate_panel(panel_index, window, cx);
 2996                    dock.set_open(true, window, cx);
 2997                    dock.active_panel().cloned()
 2998                });
 2999                break;
 3000            }
 3001        }
 3002
 3003        if panel.is_some() {
 3004            cx.notify();
 3005            self.serialize_workspace(window, cx);
 3006        }
 3007
 3008        panel
 3009    }
 3010
 3011    /// Focus or unfocus the given panel type, depending on the given callback.
 3012    fn focus_or_unfocus_panel<T: Panel>(
 3013        &mut self,
 3014        window: &mut Window,
 3015        cx: &mut Context<Self>,
 3016        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3017    ) -> Option<Arc<dyn PanelHandle>> {
 3018        let mut result_panel = None;
 3019        let mut serialize = false;
 3020        for dock in self.all_docks() {
 3021            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3022                let mut focus_center = false;
 3023                let panel = dock.update(cx, |dock, cx| {
 3024                    dock.activate_panel(panel_index, window, cx);
 3025
 3026                    let panel = dock.active_panel().cloned();
 3027                    if let Some(panel) = panel.as_ref() {
 3028                        if should_focus(&**panel, window, cx) {
 3029                            dock.set_open(true, window, cx);
 3030                            panel.panel_focus_handle(cx).focus(window);
 3031                        } else {
 3032                            focus_center = true;
 3033                        }
 3034                    }
 3035                    panel
 3036                });
 3037
 3038                if focus_center {
 3039                    self.active_pane
 3040                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3041                }
 3042
 3043                result_panel = panel;
 3044                serialize = true;
 3045                break;
 3046            }
 3047        }
 3048
 3049        if serialize {
 3050            self.serialize_workspace(window, cx);
 3051        }
 3052
 3053        cx.notify();
 3054        result_panel
 3055    }
 3056
 3057    /// Open the panel of the given type
 3058    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3059        for dock in self.all_docks() {
 3060            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3061                dock.update(cx, |dock, cx| {
 3062                    dock.activate_panel(panel_index, window, cx);
 3063                    dock.set_open(true, window, cx);
 3064                });
 3065            }
 3066        }
 3067    }
 3068
 3069    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3070        self.all_docks()
 3071            .iter()
 3072            .find_map(|dock| dock.read(cx).panel::<T>())
 3073    }
 3074
 3075    fn dismiss_zoomed_items_to_reveal(
 3076        &mut self,
 3077        dock_to_reveal: Option<DockPosition>,
 3078        window: &mut Window,
 3079        cx: &mut Context<Self>,
 3080    ) {
 3081        // If a center pane is zoomed, unzoom it.
 3082        for pane in &self.panes {
 3083            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3084                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3085            }
 3086        }
 3087
 3088        // If another dock is zoomed, hide it.
 3089        let mut focus_center = false;
 3090        for dock in self.all_docks() {
 3091            dock.update(cx, |dock, cx| {
 3092                if Some(dock.position()) != dock_to_reveal {
 3093                    if let Some(panel) = dock.active_panel() {
 3094                        if panel.is_zoomed(window, cx) {
 3095                            focus_center |=
 3096                                panel.panel_focus_handle(cx).contains_focused(window, cx);
 3097                            dock.set_open(false, window, cx);
 3098                        }
 3099                    }
 3100                }
 3101            });
 3102        }
 3103
 3104        if focus_center {
 3105            self.active_pane
 3106                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3107        }
 3108
 3109        if self.zoomed_position != dock_to_reveal {
 3110            self.zoomed = None;
 3111            self.zoomed_position = None;
 3112            cx.emit(Event::ZoomChanged);
 3113        }
 3114
 3115        cx.notify();
 3116    }
 3117
 3118    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3119        let pane = cx.new(|cx| {
 3120            let mut pane = Pane::new(
 3121                self.weak_handle(),
 3122                self.project.clone(),
 3123                self.pane_history_timestamp.clone(),
 3124                None,
 3125                NewFile.boxed_clone(),
 3126                window,
 3127                cx,
 3128            );
 3129            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3130            pane
 3131        });
 3132        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3133            .detach();
 3134        self.panes.push(pane.clone());
 3135
 3136        window.focus(&pane.focus_handle(cx));
 3137
 3138        cx.emit(Event::PaneAdded(pane.clone()));
 3139        pane
 3140    }
 3141
 3142    pub fn add_item_to_center(
 3143        &mut self,
 3144        item: Box<dyn ItemHandle>,
 3145        window: &mut Window,
 3146        cx: &mut Context<Self>,
 3147    ) -> bool {
 3148        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3149            if let Some(center_pane) = center_pane.upgrade() {
 3150                center_pane.update(cx, |pane, cx| {
 3151                    pane.add_item(item, true, true, None, window, cx)
 3152                });
 3153                true
 3154            } else {
 3155                false
 3156            }
 3157        } else {
 3158            false
 3159        }
 3160    }
 3161
 3162    pub fn add_item_to_active_pane(
 3163        &mut self,
 3164        item: Box<dyn ItemHandle>,
 3165        destination_index: Option<usize>,
 3166        focus_item: bool,
 3167        window: &mut Window,
 3168        cx: &mut App,
 3169    ) {
 3170        self.add_item(
 3171            self.active_pane.clone(),
 3172            item,
 3173            destination_index,
 3174            false,
 3175            focus_item,
 3176            window,
 3177            cx,
 3178        )
 3179    }
 3180
 3181    pub fn add_item(
 3182        &mut self,
 3183        pane: Entity<Pane>,
 3184        item: Box<dyn ItemHandle>,
 3185        destination_index: Option<usize>,
 3186        activate_pane: bool,
 3187        focus_item: bool,
 3188        window: &mut Window,
 3189        cx: &mut App,
 3190    ) {
 3191        if let Some(text) = item.telemetry_event_text(cx) {
 3192            telemetry::event!(text);
 3193        }
 3194
 3195        pane.update(cx, |pane, cx| {
 3196            pane.add_item(
 3197                item,
 3198                activate_pane,
 3199                focus_item,
 3200                destination_index,
 3201                window,
 3202                cx,
 3203            )
 3204        });
 3205    }
 3206
 3207    pub fn split_item(
 3208        &mut self,
 3209        split_direction: SplitDirection,
 3210        item: Box<dyn ItemHandle>,
 3211        window: &mut Window,
 3212        cx: &mut Context<Self>,
 3213    ) {
 3214        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3215        self.add_item(new_pane, item, None, true, true, window, cx);
 3216    }
 3217
 3218    pub fn open_abs_path(
 3219        &mut self,
 3220        abs_path: PathBuf,
 3221        options: OpenOptions,
 3222        window: &mut Window,
 3223        cx: &mut Context<Self>,
 3224    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3225        cx.spawn_in(window, async move |workspace, cx| {
 3226            let open_paths_task_result = workspace
 3227                .update_in(cx, |workspace, window, cx| {
 3228                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3229                })
 3230                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3231                .await;
 3232            anyhow::ensure!(
 3233                open_paths_task_result.len() == 1,
 3234                "open abs path {abs_path:?} task returned incorrect number of results"
 3235            );
 3236            match open_paths_task_result
 3237                .into_iter()
 3238                .next()
 3239                .expect("ensured single task result")
 3240            {
 3241                Some(open_result) => {
 3242                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3243                }
 3244                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3245            }
 3246        })
 3247    }
 3248
 3249    pub fn split_abs_path(
 3250        &mut self,
 3251        abs_path: PathBuf,
 3252        visible: bool,
 3253        window: &mut Window,
 3254        cx: &mut Context<Self>,
 3255    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3256        let project_path_task =
 3257            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3258        cx.spawn_in(window, async move |this, cx| {
 3259            let (_, path) = project_path_task.await?;
 3260            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3261                .await
 3262        })
 3263    }
 3264
 3265    pub fn open_path(
 3266        &mut self,
 3267        path: impl Into<ProjectPath>,
 3268        pane: Option<WeakEntity<Pane>>,
 3269        focus_item: bool,
 3270        window: &mut Window,
 3271        cx: &mut App,
 3272    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3273        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3274    }
 3275
 3276    pub fn open_path_preview(
 3277        &mut self,
 3278        path: impl Into<ProjectPath>,
 3279        pane: Option<WeakEntity<Pane>>,
 3280        focus_item: bool,
 3281        allow_preview: bool,
 3282        activate: bool,
 3283        window: &mut Window,
 3284        cx: &mut App,
 3285    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3286        let pane = pane.unwrap_or_else(|| {
 3287            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3288                self.panes
 3289                    .first()
 3290                    .expect("There must be an active pane")
 3291                    .downgrade()
 3292            })
 3293        });
 3294
 3295        let project_path = path.into();
 3296        let task = self.load_path(project_path.clone(), window, cx);
 3297        window.spawn(cx, async move |cx| {
 3298            let (project_entry_id, build_item) = task.await?;
 3299            let result = pane.update_in(cx, |pane, window, cx| {
 3300                pane.open_item(
 3301                    project_entry_id,
 3302                    project_path,
 3303                    focus_item,
 3304                    allow_preview,
 3305                    activate,
 3306                    None,
 3307                    window,
 3308                    cx,
 3309                    build_item,
 3310                )
 3311            });
 3312            result
 3313        })
 3314    }
 3315
 3316    pub fn split_path(
 3317        &mut self,
 3318        path: impl Into<ProjectPath>,
 3319        window: &mut Window,
 3320        cx: &mut Context<Self>,
 3321    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3322        self.split_path_preview(path, false, None, window, cx)
 3323    }
 3324
 3325    pub fn split_path_preview(
 3326        &mut self,
 3327        path: impl Into<ProjectPath>,
 3328        allow_preview: bool,
 3329        split_direction: Option<SplitDirection>,
 3330        window: &mut Window,
 3331        cx: &mut Context<Self>,
 3332    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3333        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3334            self.panes
 3335                .first()
 3336                .expect("There must be an active pane")
 3337                .downgrade()
 3338        });
 3339
 3340        if let Member::Pane(center_pane) = &self.center.root {
 3341            if center_pane.read(cx).items_len() == 0 {
 3342                return self.open_path(path, Some(pane), true, window, cx);
 3343            }
 3344        }
 3345
 3346        let project_path = path.into();
 3347        let task = self.load_path(project_path.clone(), window, cx);
 3348        cx.spawn_in(window, async move |this, cx| {
 3349            let (project_entry_id, build_item) = task.await?;
 3350            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3351                let pane = pane.upgrade()?;
 3352                let new_pane = this.split_pane(
 3353                    pane,
 3354                    split_direction.unwrap_or(SplitDirection::Right),
 3355                    window,
 3356                    cx,
 3357                );
 3358                new_pane.update(cx, |new_pane, cx| {
 3359                    Some(new_pane.open_item(
 3360                        project_entry_id,
 3361                        project_path,
 3362                        true,
 3363                        allow_preview,
 3364                        true,
 3365                        None,
 3366                        window,
 3367                        cx,
 3368                        build_item,
 3369                    ))
 3370                })
 3371            })
 3372            .map(|option| option.context("pane was dropped"))?
 3373        })
 3374    }
 3375
 3376    fn load_path(
 3377        &mut self,
 3378        path: ProjectPath,
 3379        window: &mut Window,
 3380        cx: &mut App,
 3381    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3382        let project = self.project().clone();
 3383        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3384        registry.open_path(&project, &path, window, cx)
 3385    }
 3386
 3387    pub fn find_project_item<T>(
 3388        &self,
 3389        pane: &Entity<Pane>,
 3390        project_item: &Entity<T::Item>,
 3391        cx: &App,
 3392    ) -> Option<Entity<T>>
 3393    where
 3394        T: ProjectItem,
 3395    {
 3396        use project::ProjectItem as _;
 3397        let project_item = project_item.read(cx);
 3398        let entry_id = project_item.entry_id(cx);
 3399        let project_path = project_item.project_path(cx);
 3400
 3401        let mut item = None;
 3402        if let Some(entry_id) = entry_id {
 3403            item = pane.read(cx).item_for_entry(entry_id, cx);
 3404        }
 3405        if item.is_none() {
 3406            if let Some(project_path) = project_path {
 3407                item = pane.read(cx).item_for_path(project_path, cx);
 3408            }
 3409        }
 3410
 3411        item.and_then(|item| item.downcast::<T>())
 3412    }
 3413
 3414    pub fn is_project_item_open<T>(
 3415        &self,
 3416        pane: &Entity<Pane>,
 3417        project_item: &Entity<T::Item>,
 3418        cx: &App,
 3419    ) -> bool
 3420    where
 3421        T: ProjectItem,
 3422    {
 3423        self.find_project_item::<T>(pane, project_item, cx)
 3424            .is_some()
 3425    }
 3426
 3427    pub fn open_project_item<T>(
 3428        &mut self,
 3429        pane: Entity<Pane>,
 3430        project_item: Entity<T::Item>,
 3431        activate_pane: bool,
 3432        focus_item: bool,
 3433        window: &mut Window,
 3434        cx: &mut Context<Self>,
 3435    ) -> Entity<T>
 3436    where
 3437        T: ProjectItem,
 3438    {
 3439        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3440            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3441            return item;
 3442        }
 3443
 3444        let item = pane.update(cx, |pane, cx| {
 3445            cx.new(|cx| {
 3446                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3447            })
 3448        });
 3449        let item_id = item.item_id();
 3450        let mut destination_index = None;
 3451        pane.update(cx, |pane, cx| {
 3452            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
 3453                if let Some(preview_item_id) = pane.preview_item_id() {
 3454                    if preview_item_id != item_id {
 3455                        destination_index = pane.close_current_preview_item(window, cx);
 3456                    }
 3457                }
 3458            }
 3459            pane.set_preview_item_id(Some(item.item_id()), cx)
 3460        });
 3461
 3462        self.add_item(
 3463            pane,
 3464            Box::new(item.clone()),
 3465            destination_index,
 3466            activate_pane,
 3467            focus_item,
 3468            window,
 3469            cx,
 3470        );
 3471        item
 3472    }
 3473
 3474    pub fn open_shared_screen(
 3475        &mut self,
 3476        peer_id: PeerId,
 3477        window: &mut Window,
 3478        cx: &mut Context<Self>,
 3479    ) {
 3480        if let Some(shared_screen) =
 3481            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3482        {
 3483            self.active_pane.update(cx, |pane, cx| {
 3484                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3485            });
 3486        }
 3487    }
 3488
 3489    pub fn activate_item(
 3490        &mut self,
 3491        item: &dyn ItemHandle,
 3492        activate_pane: bool,
 3493        focus_item: bool,
 3494        window: &mut Window,
 3495        cx: &mut App,
 3496    ) -> bool {
 3497        let result = self.panes.iter().find_map(|pane| {
 3498            pane.read(cx)
 3499                .index_for_item(item)
 3500                .map(|ix| (pane.clone(), ix))
 3501        });
 3502        if let Some((pane, ix)) = result {
 3503            pane.update(cx, |pane, cx| {
 3504                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3505            });
 3506            true
 3507        } else {
 3508            false
 3509        }
 3510    }
 3511
 3512    fn activate_pane_at_index(
 3513        &mut self,
 3514        action: &ActivatePane,
 3515        window: &mut Window,
 3516        cx: &mut Context<Self>,
 3517    ) {
 3518        let panes = self.center.panes();
 3519        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3520            window.focus(&pane.focus_handle(cx));
 3521        } else {
 3522            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3523        }
 3524    }
 3525
 3526    fn move_item_to_pane_at_index(
 3527        &mut self,
 3528        action: &MoveItemToPane,
 3529        window: &mut Window,
 3530        cx: &mut Context<Self>,
 3531    ) {
 3532        let panes = self.center.panes();
 3533        let destination = match panes.get(action.destination) {
 3534            Some(&destination) => destination.clone(),
 3535            None => {
 3536                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3537                    return;
 3538                }
 3539                let direction = SplitDirection::Right;
 3540                let split_off_pane = self
 3541                    .find_pane_in_direction(direction, cx)
 3542                    .unwrap_or_else(|| self.active_pane.clone());
 3543                let new_pane = self.add_pane(window, cx);
 3544                if self
 3545                    .center
 3546                    .split(&split_off_pane, &new_pane, direction)
 3547                    .log_err()
 3548                    .is_none()
 3549                {
 3550                    return;
 3551                };
 3552                new_pane
 3553            }
 3554        };
 3555
 3556        if action.clone {
 3557            clone_active_item(
 3558                self.database_id(),
 3559                &self.active_pane,
 3560                &destination,
 3561                action.focus,
 3562                window,
 3563                cx,
 3564            )
 3565        } else {
 3566            move_active_item(
 3567                &self.active_pane,
 3568                &destination,
 3569                action.focus,
 3570                true,
 3571                window,
 3572                cx,
 3573            )
 3574        }
 3575    }
 3576
 3577    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3578        let panes = self.center.panes();
 3579        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3580            let next_ix = (ix + 1) % panes.len();
 3581            let next_pane = panes[next_ix].clone();
 3582            window.focus(&next_pane.focus_handle(cx));
 3583        }
 3584    }
 3585
 3586    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3587        let panes = self.center.panes();
 3588        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3589            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3590            let prev_pane = panes[prev_ix].clone();
 3591            window.focus(&prev_pane.focus_handle(cx));
 3592        }
 3593    }
 3594
 3595    pub fn activate_pane_in_direction(
 3596        &mut self,
 3597        direction: SplitDirection,
 3598        window: &mut Window,
 3599        cx: &mut App,
 3600    ) {
 3601        use ActivateInDirectionTarget as Target;
 3602        enum Origin {
 3603            LeftDock,
 3604            RightDock,
 3605            BottomDock,
 3606            Center,
 3607        }
 3608
 3609        let origin: Origin = [
 3610            (&self.left_dock, Origin::LeftDock),
 3611            (&self.right_dock, Origin::RightDock),
 3612            (&self.bottom_dock, Origin::BottomDock),
 3613        ]
 3614        .into_iter()
 3615        .find_map(|(dock, origin)| {
 3616            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3617                Some(origin)
 3618            } else {
 3619                None
 3620            }
 3621        })
 3622        .unwrap_or(Origin::Center);
 3623
 3624        let get_last_active_pane = || {
 3625            let pane = self
 3626                .last_active_center_pane
 3627                .clone()
 3628                .unwrap_or_else(|| {
 3629                    self.panes
 3630                        .first()
 3631                        .expect("There must be an active pane")
 3632                        .downgrade()
 3633                })
 3634                .upgrade()?;
 3635            (pane.read(cx).items_len() != 0).then_some(pane)
 3636        };
 3637
 3638        let try_dock =
 3639            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3640
 3641        let target = match (origin, direction) {
 3642            // We're in the center, so we first try to go to a different pane,
 3643            // otherwise try to go to a dock.
 3644            (Origin::Center, direction) => {
 3645                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3646                    Some(Target::Pane(pane))
 3647                } else {
 3648                    match direction {
 3649                        SplitDirection::Up => None,
 3650                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3651                        SplitDirection::Left => try_dock(&self.left_dock),
 3652                        SplitDirection::Right => try_dock(&self.right_dock),
 3653                    }
 3654                }
 3655            }
 3656
 3657            (Origin::LeftDock, SplitDirection::Right) => {
 3658                if let Some(last_active_pane) = get_last_active_pane() {
 3659                    Some(Target::Pane(last_active_pane))
 3660                } else {
 3661                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3662                }
 3663            }
 3664
 3665            (Origin::LeftDock, SplitDirection::Down)
 3666            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3667
 3668            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3669            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3670            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3671
 3672            (Origin::RightDock, SplitDirection::Left) => {
 3673                if let Some(last_active_pane) = get_last_active_pane() {
 3674                    Some(Target::Pane(last_active_pane))
 3675                } else {
 3676                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3677                }
 3678            }
 3679
 3680            _ => None,
 3681        };
 3682
 3683        match target {
 3684            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3685                let pane = pane.read(cx);
 3686                if let Some(item) = pane.active_item() {
 3687                    item.item_focus_handle(cx).focus(window);
 3688                } else {
 3689                    log::error!(
 3690                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3691                    );
 3692                }
 3693            }
 3694            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3695                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3696                window.defer(cx, move |window, cx| {
 3697                    let dock = dock.read(cx);
 3698                    if let Some(panel) = dock.active_panel() {
 3699                        panel.panel_focus_handle(cx).focus(window);
 3700                    } else {
 3701                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3702                    }
 3703                })
 3704            }
 3705            None => {}
 3706        }
 3707    }
 3708
 3709    pub fn move_item_to_pane_in_direction(
 3710        &mut self,
 3711        action: &MoveItemToPaneInDirection,
 3712        window: &mut Window,
 3713        cx: &mut Context<Self>,
 3714    ) {
 3715        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3716            Some(destination) => destination,
 3717            None => {
 3718                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3719                    return;
 3720                }
 3721                let new_pane = self.add_pane(window, cx);
 3722                if self
 3723                    .center
 3724                    .split(&self.active_pane, &new_pane, action.direction)
 3725                    .log_err()
 3726                    .is_none()
 3727                {
 3728                    return;
 3729                };
 3730                new_pane
 3731            }
 3732        };
 3733
 3734        if action.clone {
 3735            clone_active_item(
 3736                self.database_id(),
 3737                &self.active_pane,
 3738                &destination,
 3739                action.focus,
 3740                window,
 3741                cx,
 3742            )
 3743        } else {
 3744            move_active_item(
 3745                &self.active_pane,
 3746                &destination,
 3747                action.focus,
 3748                true,
 3749                window,
 3750                cx,
 3751            );
 3752        }
 3753    }
 3754
 3755    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3756        self.center.bounding_box_for_pane(pane)
 3757    }
 3758
 3759    pub fn find_pane_in_direction(
 3760        &mut self,
 3761        direction: SplitDirection,
 3762        cx: &App,
 3763    ) -> Option<Entity<Pane>> {
 3764        self.center
 3765            .find_pane_in_direction(&self.active_pane, direction, cx)
 3766            .cloned()
 3767    }
 3768
 3769    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3770        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3771            self.center.swap(&self.active_pane, &to);
 3772            cx.notify();
 3773        }
 3774    }
 3775
 3776    pub fn resize_pane(
 3777        &mut self,
 3778        axis: gpui::Axis,
 3779        amount: Pixels,
 3780        window: &mut Window,
 3781        cx: &mut Context<Self>,
 3782    ) {
 3783        let docks = self.all_docks();
 3784        let active_dock = docks
 3785            .into_iter()
 3786            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3787
 3788        if let Some(dock) = active_dock {
 3789            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3790                return;
 3791            };
 3792            match dock.read(cx).position() {
 3793                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3794                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3795                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3796            }
 3797        } else {
 3798            self.center
 3799                .resize(&self.active_pane, axis, amount, &self.bounds);
 3800        }
 3801        cx.notify();
 3802    }
 3803
 3804    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3805        self.center.reset_pane_sizes();
 3806        cx.notify();
 3807    }
 3808
 3809    fn handle_pane_focused(
 3810        &mut self,
 3811        pane: Entity<Pane>,
 3812        window: &mut Window,
 3813        cx: &mut Context<Self>,
 3814    ) {
 3815        // This is explicitly hoisted out of the following check for pane identity as
 3816        // terminal panel panes are not registered as a center panes.
 3817        self.status_bar.update(cx, |status_bar, cx| {
 3818            status_bar.set_active_pane(&pane, window, cx);
 3819        });
 3820        if self.active_pane != pane {
 3821            self.set_active_pane(&pane, window, cx);
 3822        }
 3823
 3824        if self.last_active_center_pane.is_none() {
 3825            self.last_active_center_pane = Some(pane.downgrade());
 3826        }
 3827
 3828        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3829        if pane.read(cx).is_zoomed() {
 3830            self.zoomed = Some(pane.downgrade().into());
 3831        } else {
 3832            self.zoomed = None;
 3833        }
 3834        self.zoomed_position = None;
 3835        cx.emit(Event::ZoomChanged);
 3836        self.update_active_view_for_followers(window, cx);
 3837        pane.update(cx, |pane, _| {
 3838            pane.track_alternate_file_items();
 3839        });
 3840
 3841        cx.notify();
 3842    }
 3843
 3844    fn set_active_pane(
 3845        &mut self,
 3846        pane: &Entity<Pane>,
 3847        window: &mut Window,
 3848        cx: &mut Context<Self>,
 3849    ) {
 3850        self.active_pane = pane.clone();
 3851        self.active_item_path_changed(window, cx);
 3852        self.last_active_center_pane = Some(pane.downgrade());
 3853    }
 3854
 3855    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3856        self.update_active_view_for_followers(window, cx);
 3857    }
 3858
 3859    fn handle_pane_event(
 3860        &mut self,
 3861        pane: &Entity<Pane>,
 3862        event: &pane::Event,
 3863        window: &mut Window,
 3864        cx: &mut Context<Self>,
 3865    ) {
 3866        let mut serialize_workspace = true;
 3867        match event {
 3868            pane::Event::AddItem { item } => {
 3869                item.added_to_pane(self, pane.clone(), window, cx);
 3870                cx.emit(Event::ItemAdded {
 3871                    item: item.boxed_clone(),
 3872                });
 3873            }
 3874            pane::Event::Split(direction) => {
 3875                self.split_and_clone(pane.clone(), *direction, window, cx);
 3876            }
 3877            pane::Event::JoinIntoNext => {
 3878                self.join_pane_into_next(pane.clone(), window, cx);
 3879            }
 3880            pane::Event::JoinAll => {
 3881                self.join_all_panes(window, cx);
 3882            }
 3883            pane::Event::Remove { focus_on_pane } => {
 3884                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3885            }
 3886            pane::Event::ActivateItem {
 3887                local,
 3888                focus_changed,
 3889            } => {
 3890                cx.on_next_frame(window, |_, window, _| {
 3891                    window.invalidate_character_coordinates();
 3892                });
 3893
 3894                pane.update(cx, |pane, _| {
 3895                    pane.track_alternate_file_items();
 3896                });
 3897                if *local {
 3898                    self.unfollow_in_pane(&pane, window, cx);
 3899                }
 3900                serialize_workspace = *focus_changed || pane != self.active_pane();
 3901                if pane == self.active_pane() {
 3902                    self.active_item_path_changed(window, cx);
 3903                    self.update_active_view_for_followers(window, cx);
 3904                } else if *local {
 3905                    self.set_active_pane(&pane, window, cx);
 3906                }
 3907            }
 3908            pane::Event::UserSavedItem { item, save_intent } => {
 3909                cx.emit(Event::UserSavedItem {
 3910                    pane: pane.downgrade(),
 3911                    item: item.boxed_clone(),
 3912                    save_intent: *save_intent,
 3913                });
 3914                serialize_workspace = false;
 3915            }
 3916            pane::Event::ChangeItemTitle => {
 3917                if *pane == self.active_pane {
 3918                    self.active_item_path_changed(window, cx);
 3919                }
 3920                serialize_workspace = false;
 3921            }
 3922            pane::Event::RemoveItem { .. } => {}
 3923            pane::Event::RemovedItem { item } => {
 3924                cx.emit(Event::ActiveItemChanged);
 3925                self.update_window_edited(window, cx);
 3926                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id()) {
 3927                    if entry.get().entity_id() == pane.entity_id() {
 3928                        entry.remove();
 3929                    }
 3930                }
 3931            }
 3932            pane::Event::Focus => {
 3933                cx.on_next_frame(window, |_, window, _| {
 3934                    window.invalidate_character_coordinates();
 3935                });
 3936                self.handle_pane_focused(pane.clone(), window, cx);
 3937            }
 3938            pane::Event::ZoomIn => {
 3939                if *pane == self.active_pane {
 3940                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3941                    if pane.read(cx).has_focus(window, cx) {
 3942                        self.zoomed = Some(pane.downgrade().into());
 3943                        self.zoomed_position = None;
 3944                        cx.emit(Event::ZoomChanged);
 3945                    }
 3946                    cx.notify();
 3947                }
 3948            }
 3949            pane::Event::ZoomOut => {
 3950                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3951                if self.zoomed_position.is_none() {
 3952                    self.zoomed = None;
 3953                    cx.emit(Event::ZoomChanged);
 3954                }
 3955                cx.notify();
 3956            }
 3957            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3958        }
 3959
 3960        if serialize_workspace {
 3961            self.serialize_workspace(window, cx);
 3962        }
 3963    }
 3964
 3965    pub fn unfollow_in_pane(
 3966        &mut self,
 3967        pane: &Entity<Pane>,
 3968        window: &mut Window,
 3969        cx: &mut Context<Workspace>,
 3970    ) -> Option<CollaboratorId> {
 3971        let leader_id = self.leader_for_pane(pane)?;
 3972        self.unfollow(leader_id, window, cx);
 3973        Some(leader_id)
 3974    }
 3975
 3976    pub fn split_pane(
 3977        &mut self,
 3978        pane_to_split: Entity<Pane>,
 3979        split_direction: SplitDirection,
 3980        window: &mut Window,
 3981        cx: &mut Context<Self>,
 3982    ) -> Entity<Pane> {
 3983        let new_pane = self.add_pane(window, cx);
 3984        self.center
 3985            .split(&pane_to_split, &new_pane, split_direction)
 3986            .unwrap();
 3987        cx.notify();
 3988        new_pane
 3989    }
 3990
 3991    pub fn split_and_clone(
 3992        &mut self,
 3993        pane: Entity<Pane>,
 3994        direction: SplitDirection,
 3995        window: &mut Window,
 3996        cx: &mut Context<Self>,
 3997    ) -> Option<Entity<Pane>> {
 3998        let item = pane.read(cx).active_item()?;
 3999        let maybe_pane_handle =
 4000            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 4001                let new_pane = self.add_pane(window, cx);
 4002                new_pane.update(cx, |pane, cx| {
 4003                    pane.add_item(clone, true, true, None, window, cx)
 4004                });
 4005                self.center.split(&pane, &new_pane, direction).unwrap();
 4006                Some(new_pane)
 4007            } else {
 4008                None
 4009            };
 4010        cx.notify();
 4011        maybe_pane_handle
 4012    }
 4013
 4014    pub fn split_pane_with_item(
 4015        &mut self,
 4016        pane_to_split: WeakEntity<Pane>,
 4017        split_direction: SplitDirection,
 4018        from: WeakEntity<Pane>,
 4019        item_id_to_move: EntityId,
 4020        window: &mut Window,
 4021        cx: &mut Context<Self>,
 4022    ) {
 4023        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4024            return;
 4025        };
 4026        let Some(from) = from.upgrade() else {
 4027            return;
 4028        };
 4029
 4030        let new_pane = self.add_pane(window, cx);
 4031        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4032        self.center
 4033            .split(&pane_to_split, &new_pane, split_direction)
 4034            .unwrap();
 4035        cx.notify();
 4036    }
 4037
 4038    pub fn split_pane_with_project_entry(
 4039        &mut self,
 4040        pane_to_split: WeakEntity<Pane>,
 4041        split_direction: SplitDirection,
 4042        project_entry: ProjectEntryId,
 4043        window: &mut Window,
 4044        cx: &mut Context<Self>,
 4045    ) -> Option<Task<Result<()>>> {
 4046        let pane_to_split = pane_to_split.upgrade()?;
 4047        let new_pane = self.add_pane(window, cx);
 4048        self.center
 4049            .split(&pane_to_split, &new_pane, split_direction)
 4050            .unwrap();
 4051
 4052        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4053        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4054        Some(cx.foreground_executor().spawn(async move {
 4055            task.await?;
 4056            Ok(())
 4057        }))
 4058    }
 4059
 4060    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4061        let active_item = self.active_pane.read(cx).active_item();
 4062        for pane in &self.panes {
 4063            join_pane_into_active(&self.active_pane, pane, window, cx);
 4064        }
 4065        if let Some(active_item) = active_item {
 4066            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4067        }
 4068        cx.notify();
 4069    }
 4070
 4071    pub fn join_pane_into_next(
 4072        &mut self,
 4073        pane: Entity<Pane>,
 4074        window: &mut Window,
 4075        cx: &mut Context<Self>,
 4076    ) {
 4077        let next_pane = self
 4078            .find_pane_in_direction(SplitDirection::Right, cx)
 4079            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4080            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4081            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4082        let Some(next_pane) = next_pane else {
 4083            return;
 4084        };
 4085        move_all_items(&pane, &next_pane, window, cx);
 4086        cx.notify();
 4087    }
 4088
 4089    fn remove_pane(
 4090        &mut self,
 4091        pane: Entity<Pane>,
 4092        focus_on: Option<Entity<Pane>>,
 4093        window: &mut Window,
 4094        cx: &mut Context<Self>,
 4095    ) {
 4096        if self.center.remove(&pane).unwrap() {
 4097            self.force_remove_pane(&pane, &focus_on, window, cx);
 4098            self.unfollow_in_pane(&pane, window, cx);
 4099            self.last_leaders_by_pane.remove(&pane.downgrade());
 4100            for removed_item in pane.read(cx).items() {
 4101                self.panes_by_item.remove(&removed_item.item_id());
 4102            }
 4103
 4104            cx.notify();
 4105        } else {
 4106            self.active_item_path_changed(window, cx);
 4107        }
 4108        cx.emit(Event::PaneRemoved);
 4109    }
 4110
 4111    pub fn panes(&self) -> &[Entity<Pane>] {
 4112        &self.panes
 4113    }
 4114
 4115    pub fn active_pane(&self) -> &Entity<Pane> {
 4116        &self.active_pane
 4117    }
 4118
 4119    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4120        for dock in self.all_docks() {
 4121            if dock.focus_handle(cx).contains_focused(window, cx) {
 4122                if let Some(pane) = dock
 4123                    .read(cx)
 4124                    .active_panel()
 4125                    .and_then(|panel| panel.pane(cx))
 4126                {
 4127                    return pane;
 4128                }
 4129            }
 4130        }
 4131        self.active_pane().clone()
 4132    }
 4133
 4134    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4135        self.find_pane_in_direction(SplitDirection::Right, cx)
 4136            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4137            .unwrap_or_else(|| {
 4138                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4139            })
 4140            .clone()
 4141    }
 4142
 4143    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4144        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4145        weak_pane.upgrade()
 4146    }
 4147
 4148    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4149        self.follower_states.retain(|leader_id, state| {
 4150            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4151                for item in state.items_by_leader_view_id.values() {
 4152                    item.view.set_leader_id(None, window, cx);
 4153                }
 4154                false
 4155            } else {
 4156                true
 4157            }
 4158        });
 4159        cx.notify();
 4160    }
 4161
 4162    pub fn start_following(
 4163        &mut self,
 4164        leader_id: impl Into<CollaboratorId>,
 4165        window: &mut Window,
 4166        cx: &mut Context<Self>,
 4167    ) -> Option<Task<Result<()>>> {
 4168        let leader_id = leader_id.into();
 4169        let pane = self.active_pane().clone();
 4170
 4171        self.last_leaders_by_pane
 4172            .insert(pane.downgrade(), leader_id);
 4173        self.unfollow(leader_id, window, cx);
 4174        self.unfollow_in_pane(&pane, window, cx);
 4175        self.follower_states.insert(
 4176            leader_id,
 4177            FollowerState {
 4178                center_pane: pane.clone(),
 4179                dock_pane: None,
 4180                active_view_id: None,
 4181                items_by_leader_view_id: Default::default(),
 4182            },
 4183        );
 4184        cx.notify();
 4185
 4186        match leader_id {
 4187            CollaboratorId::PeerId(leader_peer_id) => {
 4188                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4189                let project_id = self.project.read(cx).remote_id();
 4190                let request = self.app_state.client.request(proto::Follow {
 4191                    room_id,
 4192                    project_id,
 4193                    leader_id: Some(leader_peer_id),
 4194                });
 4195
 4196                Some(cx.spawn_in(window, async move |this, cx| {
 4197                    let response = request.await?;
 4198                    this.update(cx, |this, _| {
 4199                        let state = this
 4200                            .follower_states
 4201                            .get_mut(&leader_id)
 4202                            .context("following interrupted")?;
 4203                        state.active_view_id = response
 4204                            .active_view
 4205                            .as_ref()
 4206                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4207                        anyhow::Ok(())
 4208                    })??;
 4209                    if let Some(view) = response.active_view {
 4210                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4211                    }
 4212                    this.update_in(cx, |this, window, cx| {
 4213                        this.leader_updated(leader_id, window, cx)
 4214                    })?;
 4215                    Ok(())
 4216                }))
 4217            }
 4218            CollaboratorId::Agent => {
 4219                self.leader_updated(leader_id, window, cx)?;
 4220                Some(Task::ready(Ok(())))
 4221            }
 4222        }
 4223    }
 4224
 4225    pub fn follow_next_collaborator(
 4226        &mut self,
 4227        _: &FollowNextCollaborator,
 4228        window: &mut Window,
 4229        cx: &mut Context<Self>,
 4230    ) {
 4231        let collaborators = self.project.read(cx).collaborators();
 4232        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4233            let mut collaborators = collaborators.keys().copied();
 4234            for peer_id in collaborators.by_ref() {
 4235                if CollaboratorId::PeerId(peer_id) == leader_id {
 4236                    break;
 4237                }
 4238            }
 4239            collaborators.next().map(CollaboratorId::PeerId)
 4240        } else if let Some(last_leader_id) =
 4241            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4242        {
 4243            match last_leader_id {
 4244                CollaboratorId::PeerId(peer_id) => {
 4245                    if collaborators.contains_key(peer_id) {
 4246                        Some(*last_leader_id)
 4247                    } else {
 4248                        None
 4249                    }
 4250                }
 4251                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4252            }
 4253        } else {
 4254            None
 4255        };
 4256
 4257        let pane = self.active_pane.clone();
 4258        let Some(leader_id) = next_leader_id.or_else(|| {
 4259            Some(CollaboratorId::PeerId(
 4260                collaborators.keys().copied().next()?,
 4261            ))
 4262        }) else {
 4263            return;
 4264        };
 4265        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4266            return;
 4267        }
 4268        if let Some(task) = self.start_following(leader_id, window, cx) {
 4269            task.detach_and_log_err(cx)
 4270        }
 4271    }
 4272
 4273    pub fn follow(
 4274        &mut self,
 4275        leader_id: impl Into<CollaboratorId>,
 4276        window: &mut Window,
 4277        cx: &mut Context<Self>,
 4278    ) {
 4279        let leader_id = leader_id.into();
 4280
 4281        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4282            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4283                return;
 4284            };
 4285            let room = room.read(cx);
 4286            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4287                return;
 4288            };
 4289
 4290            let project = self.project.read(cx);
 4291
 4292            let other_project_id = match remote_participant.location {
 4293                call::ParticipantLocation::External => None,
 4294                call::ParticipantLocation::UnsharedProject => None,
 4295                call::ParticipantLocation::SharedProject { project_id } => {
 4296                    if Some(project_id) == project.remote_id() {
 4297                        None
 4298                    } else {
 4299                        Some(project_id)
 4300                    }
 4301                }
 4302            };
 4303
 4304            // if they are active in another project, follow there.
 4305            if let Some(project_id) = other_project_id {
 4306                let app_state = self.app_state.clone();
 4307                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4308                    .detach_and_log_err(cx);
 4309            }
 4310        }
 4311
 4312        // if you're already following, find the right pane and focus it.
 4313        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4314            window.focus(&follower_state.pane().focus_handle(cx));
 4315
 4316            return;
 4317        }
 4318
 4319        // Otherwise, follow.
 4320        if let Some(task) = self.start_following(leader_id, window, cx) {
 4321            task.detach_and_log_err(cx)
 4322        }
 4323    }
 4324
 4325    pub fn unfollow(
 4326        &mut self,
 4327        leader_id: impl Into<CollaboratorId>,
 4328        window: &mut Window,
 4329        cx: &mut Context<Self>,
 4330    ) -> Option<()> {
 4331        cx.notify();
 4332
 4333        let leader_id = leader_id.into();
 4334        let state = self.follower_states.remove(&leader_id)?;
 4335        for (_, item) in state.items_by_leader_view_id {
 4336            item.view.set_leader_id(None, window, cx);
 4337        }
 4338
 4339        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4340            let project_id = self.project.read(cx).remote_id();
 4341            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4342            self.app_state
 4343                .client
 4344                .send(proto::Unfollow {
 4345                    room_id,
 4346                    project_id,
 4347                    leader_id: Some(leader_peer_id),
 4348                })
 4349                .log_err();
 4350        }
 4351
 4352        Some(())
 4353    }
 4354
 4355    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4356        self.follower_states.contains_key(&id.into())
 4357    }
 4358
 4359    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4360        cx.emit(Event::ActiveItemChanged);
 4361        let active_entry = self.active_project_path(cx);
 4362        self.project
 4363            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4364
 4365        self.update_window_title(window, cx);
 4366    }
 4367
 4368    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4369        let project = self.project().read(cx);
 4370        let mut title = String::new();
 4371
 4372        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4373            if i > 0 {
 4374                title.push_str(", ");
 4375            }
 4376            title.push_str(name);
 4377        }
 4378
 4379        if title.is_empty() {
 4380            title = "empty project".to_string();
 4381        }
 4382
 4383        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4384            let filename = path
 4385                .path
 4386                .file_name()
 4387                .map(|s| s.to_string_lossy())
 4388                .or_else(|| {
 4389                    Some(Cow::Borrowed(
 4390                        project
 4391                            .worktree_for_id(path.worktree_id, cx)?
 4392                            .read(cx)
 4393                            .root_name(),
 4394                    ))
 4395                });
 4396
 4397            if let Some(filename) = filename {
 4398                title.push_str("");
 4399                title.push_str(filename.as_ref());
 4400            }
 4401        }
 4402
 4403        if project.is_via_collab() {
 4404            title.push_str("");
 4405        } else if project.is_shared() {
 4406            title.push_str("");
 4407        }
 4408
 4409        window.set_window_title(&title);
 4410    }
 4411
 4412    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4413        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4414        if is_edited != self.window_edited {
 4415            self.window_edited = is_edited;
 4416            window.set_window_edited(self.window_edited)
 4417        }
 4418    }
 4419
 4420    fn update_item_dirty_state(
 4421        &mut self,
 4422        item: &dyn ItemHandle,
 4423        window: &mut Window,
 4424        cx: &mut App,
 4425    ) {
 4426        let is_dirty = item.is_dirty(cx);
 4427        let item_id = item.item_id();
 4428        let was_dirty = self.dirty_items.contains_key(&item_id);
 4429        if is_dirty == was_dirty {
 4430            return;
 4431        }
 4432        if was_dirty {
 4433            self.dirty_items.remove(&item_id);
 4434            self.update_window_edited(window, cx);
 4435            return;
 4436        }
 4437        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4438            let s = item.on_release(
 4439                cx,
 4440                Box::new(move |cx| {
 4441                    window_handle
 4442                        .update(cx, |this, window, cx| {
 4443                            this.dirty_items.remove(&item_id);
 4444                            this.update_window_edited(window, cx)
 4445                        })
 4446                        .ok();
 4447                }),
 4448            );
 4449            self.dirty_items.insert(item_id, s);
 4450            self.update_window_edited(window, cx);
 4451        }
 4452    }
 4453
 4454    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4455        if self.notifications.is_empty() {
 4456            None
 4457        } else {
 4458            Some(
 4459                div()
 4460                    .absolute()
 4461                    .right_3()
 4462                    .bottom_3()
 4463                    .w_112()
 4464                    .h_full()
 4465                    .flex()
 4466                    .flex_col()
 4467                    .justify_end()
 4468                    .gap_2()
 4469                    .children(
 4470                        self.notifications
 4471                            .iter()
 4472                            .map(|(_, notification)| notification.clone().into_any()),
 4473                    ),
 4474            )
 4475        }
 4476    }
 4477
 4478    // RPC handlers
 4479
 4480    fn active_view_for_follower(
 4481        &self,
 4482        follower_project_id: Option<u64>,
 4483        window: &mut Window,
 4484        cx: &mut Context<Self>,
 4485    ) -> Option<proto::View> {
 4486        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4487        let item = item?;
 4488        let leader_id = self
 4489            .pane_for(&*item)
 4490            .and_then(|pane| self.leader_for_pane(&pane));
 4491        let leader_peer_id = match leader_id {
 4492            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4493            Some(CollaboratorId::Agent) | None => None,
 4494        };
 4495
 4496        let item_handle = item.to_followable_item_handle(cx)?;
 4497        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4498        let variant = item_handle.to_state_proto(window, cx)?;
 4499
 4500        if item_handle.is_project_item(window, cx)
 4501            && (follower_project_id.is_none()
 4502                || follower_project_id != self.project.read(cx).remote_id())
 4503        {
 4504            return None;
 4505        }
 4506
 4507        Some(proto::View {
 4508            id: id.to_proto(),
 4509            leader_id: leader_peer_id,
 4510            variant: Some(variant),
 4511            panel_id: panel_id.map(|id| id as i32),
 4512        })
 4513    }
 4514
 4515    fn handle_follow(
 4516        &mut self,
 4517        follower_project_id: Option<u64>,
 4518        window: &mut Window,
 4519        cx: &mut Context<Self>,
 4520    ) -> proto::FollowResponse {
 4521        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4522
 4523        cx.notify();
 4524        proto::FollowResponse {
 4525            // TODO: Remove after version 0.145.x stabilizes.
 4526            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4527            views: active_view.iter().cloned().collect(),
 4528            active_view,
 4529        }
 4530    }
 4531
 4532    fn handle_update_followers(
 4533        &mut self,
 4534        leader_id: PeerId,
 4535        message: proto::UpdateFollowers,
 4536        _window: &mut Window,
 4537        _cx: &mut Context<Self>,
 4538    ) {
 4539        self.leader_updates_tx
 4540            .unbounded_send((leader_id, message))
 4541            .ok();
 4542    }
 4543
 4544    async fn process_leader_update(
 4545        this: &WeakEntity<Self>,
 4546        leader_id: PeerId,
 4547        update: proto::UpdateFollowers,
 4548        cx: &mut AsyncWindowContext,
 4549    ) -> Result<()> {
 4550        match update.variant.context("invalid update")? {
 4551            proto::update_followers::Variant::CreateView(view) => {
 4552                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4553                let should_add_view = this.update(cx, |this, _| {
 4554                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4555                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4556                    } else {
 4557                        anyhow::Ok(false)
 4558                    }
 4559                })??;
 4560
 4561                if should_add_view {
 4562                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4563                }
 4564            }
 4565            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4566                let should_add_view = this.update(cx, |this, _| {
 4567                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4568                        state.active_view_id = update_active_view
 4569                            .view
 4570                            .as_ref()
 4571                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4572
 4573                        if state.active_view_id.is_some_and(|view_id| {
 4574                            !state.items_by_leader_view_id.contains_key(&view_id)
 4575                        }) {
 4576                            anyhow::Ok(true)
 4577                        } else {
 4578                            anyhow::Ok(false)
 4579                        }
 4580                    } else {
 4581                        anyhow::Ok(false)
 4582                    }
 4583                })??;
 4584
 4585                if should_add_view {
 4586                    if let Some(view) = update_active_view.view {
 4587                        Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4588                    }
 4589                }
 4590            }
 4591            proto::update_followers::Variant::UpdateView(update_view) => {
 4592                let variant = update_view.variant.context("missing update view variant")?;
 4593                let id = update_view.id.context("missing update view id")?;
 4594                let mut tasks = Vec::new();
 4595                this.update_in(cx, |this, window, cx| {
 4596                    let project = this.project.clone();
 4597                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4598                        let view_id = ViewId::from_proto(id.clone())?;
 4599                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4600                            tasks.push(item.view.apply_update_proto(
 4601                                &project,
 4602                                variant.clone(),
 4603                                window,
 4604                                cx,
 4605                            ));
 4606                        }
 4607                    }
 4608                    anyhow::Ok(())
 4609                })??;
 4610                try_join_all(tasks).await.log_err();
 4611            }
 4612        }
 4613        this.update_in(cx, |this, window, cx| {
 4614            this.leader_updated(leader_id, window, cx)
 4615        })?;
 4616        Ok(())
 4617    }
 4618
 4619    async fn add_view_from_leader(
 4620        this: WeakEntity<Self>,
 4621        leader_id: PeerId,
 4622        view: &proto::View,
 4623        cx: &mut AsyncWindowContext,
 4624    ) -> Result<()> {
 4625        let this = this.upgrade().context("workspace dropped")?;
 4626
 4627        let Some(id) = view.id.clone() else {
 4628            anyhow::bail!("no id for view");
 4629        };
 4630        let id = ViewId::from_proto(id)?;
 4631        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4632
 4633        let pane = this.update(cx, |this, _cx| {
 4634            let state = this
 4635                .follower_states
 4636                .get(&leader_id.into())
 4637                .context("stopped following")?;
 4638            anyhow::Ok(state.pane().clone())
 4639        })??;
 4640        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4641            let client = this.read(cx).client().clone();
 4642            pane.items().find_map(|item| {
 4643                let item = item.to_followable_item_handle(cx)?;
 4644                if item.remote_id(&client, window, cx) == Some(id) {
 4645                    Some(item)
 4646                } else {
 4647                    None
 4648                }
 4649            })
 4650        })?;
 4651        let item = if let Some(existing_item) = existing_item {
 4652            existing_item
 4653        } else {
 4654            let variant = view.variant.clone();
 4655            anyhow::ensure!(variant.is_some(), "missing view variant");
 4656
 4657            let task = cx.update(|window, cx| {
 4658                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4659            })?;
 4660
 4661            let Some(task) = task else {
 4662                anyhow::bail!(
 4663                    "failed to construct view from leader (maybe from a different version of zed?)"
 4664                );
 4665            };
 4666
 4667            let mut new_item = task.await?;
 4668            pane.update_in(cx, |pane, window, cx| {
 4669                let mut item_to_remove = None;
 4670                for (ix, item) in pane.items().enumerate() {
 4671                    if let Some(item) = item.to_followable_item_handle(cx) {
 4672                        match new_item.dedup(item.as_ref(), window, cx) {
 4673                            Some(item::Dedup::KeepExisting) => {
 4674                                new_item =
 4675                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4676                                break;
 4677                            }
 4678                            Some(item::Dedup::ReplaceExisting) => {
 4679                                item_to_remove = Some((ix, item.item_id()));
 4680                                break;
 4681                            }
 4682                            None => {}
 4683                        }
 4684                    }
 4685                }
 4686
 4687                if let Some((ix, id)) = item_to_remove {
 4688                    pane.remove_item(id, false, false, window, cx);
 4689                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4690                }
 4691            })?;
 4692
 4693            new_item
 4694        };
 4695
 4696        this.update_in(cx, |this, window, cx| {
 4697            let state = this.follower_states.get_mut(&leader_id.into())?;
 4698            item.set_leader_id(Some(leader_id.into()), window, cx);
 4699            state.items_by_leader_view_id.insert(
 4700                id,
 4701                FollowerView {
 4702                    view: item,
 4703                    location: panel_id,
 4704                },
 4705            );
 4706
 4707            Some(())
 4708        })?;
 4709
 4710        Ok(())
 4711    }
 4712
 4713    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4714        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4715            return;
 4716        };
 4717
 4718        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4719            let buffer_entity_id = agent_location.buffer.entity_id();
 4720            let view_id = ViewId {
 4721                creator: CollaboratorId::Agent,
 4722                id: buffer_entity_id.as_u64(),
 4723            };
 4724            follower_state.active_view_id = Some(view_id);
 4725
 4726            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4727                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4728                hash_map::Entry::Vacant(entry) => {
 4729                    let existing_view =
 4730                        follower_state
 4731                            .center_pane
 4732                            .read(cx)
 4733                            .items()
 4734                            .find_map(|item| {
 4735                                let item = item.to_followable_item_handle(cx)?;
 4736                                if item.is_singleton(cx)
 4737                                    && item.project_item_model_ids(cx).as_slice()
 4738                                        == [buffer_entity_id]
 4739                                {
 4740                                    Some(item)
 4741                                } else {
 4742                                    None
 4743                                }
 4744                            });
 4745                    let view = existing_view.or_else(|| {
 4746                        agent_location.buffer.upgrade().and_then(|buffer| {
 4747                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4748                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4749                            })?
 4750                            .to_followable_item_handle(cx)
 4751                        })
 4752                    });
 4753
 4754                    if let Some(view) = view {
 4755                        Some(entry.insert(FollowerView {
 4756                            view,
 4757                            location: None,
 4758                        }))
 4759                    } else {
 4760                        None
 4761                    }
 4762                }
 4763            };
 4764
 4765            if let Some(item) = item {
 4766                item.view
 4767                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4768                item.view
 4769                    .update_agent_location(agent_location.position, window, cx);
 4770            }
 4771        } else {
 4772            follower_state.active_view_id = None;
 4773        }
 4774
 4775        self.leader_updated(CollaboratorId::Agent, window, cx);
 4776    }
 4777
 4778    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4779        let mut is_project_item = true;
 4780        let mut update = proto::UpdateActiveView::default();
 4781        if window.is_window_active() {
 4782            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4783
 4784            if let Some(item) = active_item {
 4785                if item.item_focus_handle(cx).contains_focused(window, cx) {
 4786                    let leader_id = self
 4787                        .pane_for(&*item)
 4788                        .and_then(|pane| self.leader_for_pane(&pane));
 4789                    let leader_peer_id = match leader_id {
 4790                        Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4791                        Some(CollaboratorId::Agent) | None => None,
 4792                    };
 4793
 4794                    if let Some(item) = item.to_followable_item_handle(cx) {
 4795                        let id = item
 4796                            .remote_id(&self.app_state.client, window, cx)
 4797                            .map(|id| id.to_proto());
 4798
 4799                        if let Some(id) = id.clone() {
 4800                            if let Some(variant) = item.to_state_proto(window, cx) {
 4801                                let view = Some(proto::View {
 4802                                    id: id.clone(),
 4803                                    leader_id: leader_peer_id,
 4804                                    variant: Some(variant),
 4805                                    panel_id: panel_id.map(|id| id as i32),
 4806                                });
 4807
 4808                                is_project_item = item.is_project_item(window, cx);
 4809                                update = proto::UpdateActiveView {
 4810                                    view,
 4811                                    // TODO: Remove after version 0.145.x stabilizes.
 4812                                    id: id.clone(),
 4813                                    leader_id: leader_peer_id,
 4814                                };
 4815                            }
 4816                        };
 4817                    }
 4818                }
 4819            }
 4820        }
 4821
 4822        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4823        if active_view_id != self.last_active_view_id.as_ref() {
 4824            self.last_active_view_id = active_view_id.cloned();
 4825            self.update_followers(
 4826                is_project_item,
 4827                proto::update_followers::Variant::UpdateActiveView(update),
 4828                window,
 4829                cx,
 4830            );
 4831        }
 4832    }
 4833
 4834    fn active_item_for_followers(
 4835        &self,
 4836        window: &mut Window,
 4837        cx: &mut App,
 4838    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4839        let mut active_item = None;
 4840        let mut panel_id = None;
 4841        for dock in self.all_docks() {
 4842            if dock.focus_handle(cx).contains_focused(window, cx) {
 4843                if let Some(panel) = dock.read(cx).active_panel() {
 4844                    if let Some(pane) = panel.pane(cx) {
 4845                        if let Some(item) = pane.read(cx).active_item() {
 4846                            active_item = Some(item);
 4847                            panel_id = panel.remote_id();
 4848                            break;
 4849                        }
 4850                    }
 4851                }
 4852            }
 4853        }
 4854
 4855        if active_item.is_none() {
 4856            active_item = self.active_pane().read(cx).active_item();
 4857        }
 4858        (active_item, panel_id)
 4859    }
 4860
 4861    fn update_followers(
 4862        &self,
 4863        project_only: bool,
 4864        update: proto::update_followers::Variant,
 4865        _: &mut Window,
 4866        cx: &mut App,
 4867    ) -> Option<()> {
 4868        // If this update only applies to for followers in the current project,
 4869        // then skip it unless this project is shared. If it applies to all
 4870        // followers, regardless of project, then set `project_id` to none,
 4871        // indicating that it goes to all followers.
 4872        let project_id = if project_only {
 4873            Some(self.project.read(cx).remote_id()?)
 4874        } else {
 4875            None
 4876        };
 4877        self.app_state().workspace_store.update(cx, |store, cx| {
 4878            store.update_followers(project_id, update, cx)
 4879        })
 4880    }
 4881
 4882    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4883        self.follower_states.iter().find_map(|(leader_id, state)| {
 4884            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4885                Some(*leader_id)
 4886            } else {
 4887                None
 4888            }
 4889        })
 4890    }
 4891
 4892    fn leader_updated(
 4893        &mut self,
 4894        leader_id: impl Into<CollaboratorId>,
 4895        window: &mut Window,
 4896        cx: &mut Context<Self>,
 4897    ) -> Option<Box<dyn ItemHandle>> {
 4898        cx.notify();
 4899
 4900        let leader_id = leader_id.into();
 4901        let (panel_id, item) = match leader_id {
 4902            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4903            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4904        };
 4905
 4906        let state = self.follower_states.get(&leader_id)?;
 4907        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4908        let pane;
 4909        if let Some(panel_id) = panel_id {
 4910            pane = self
 4911                .activate_panel_for_proto_id(panel_id, window, cx)?
 4912                .pane(cx)?;
 4913            let state = self.follower_states.get_mut(&leader_id)?;
 4914            state.dock_pane = Some(pane.clone());
 4915        } else {
 4916            pane = state.center_pane.clone();
 4917            let state = self.follower_states.get_mut(&leader_id)?;
 4918            if let Some(dock_pane) = state.dock_pane.take() {
 4919                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4920            }
 4921        }
 4922
 4923        pane.update(cx, |pane, cx| {
 4924            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4925            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4926                pane.activate_item(index, false, false, window, cx);
 4927            } else {
 4928                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4929            }
 4930
 4931            if focus_active_item {
 4932                pane.focus_active_item(window, cx)
 4933            }
 4934        });
 4935
 4936        Some(item)
 4937    }
 4938
 4939    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4940        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4941        let active_view_id = state.active_view_id?;
 4942        Some(
 4943            state
 4944                .items_by_leader_view_id
 4945                .get(&active_view_id)?
 4946                .view
 4947                .boxed_clone(),
 4948        )
 4949    }
 4950
 4951    fn active_item_for_peer(
 4952        &self,
 4953        peer_id: PeerId,
 4954        window: &mut Window,
 4955        cx: &mut Context<Self>,
 4956    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4957        let call = self.active_call()?;
 4958        let room = call.read(cx).room()?.read(cx);
 4959        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4960        let leader_in_this_app;
 4961        let leader_in_this_project;
 4962        match participant.location {
 4963            call::ParticipantLocation::SharedProject { project_id } => {
 4964                leader_in_this_app = true;
 4965                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4966            }
 4967            call::ParticipantLocation::UnsharedProject => {
 4968                leader_in_this_app = true;
 4969                leader_in_this_project = false;
 4970            }
 4971            call::ParticipantLocation::External => {
 4972                leader_in_this_app = false;
 4973                leader_in_this_project = false;
 4974            }
 4975        };
 4976        let state = self.follower_states.get(&peer_id.into())?;
 4977        let mut item_to_activate = None;
 4978        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 4979            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id) {
 4980                if leader_in_this_project || !item.view.is_project_item(window, cx) {
 4981                    item_to_activate = Some((item.location, item.view.boxed_clone()));
 4982                }
 4983            }
 4984        } else if let Some(shared_screen) =
 4985            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 4986        {
 4987            item_to_activate = Some((None, Box::new(shared_screen)));
 4988        }
 4989        item_to_activate
 4990    }
 4991
 4992    fn shared_screen_for_peer(
 4993        &self,
 4994        peer_id: PeerId,
 4995        pane: &Entity<Pane>,
 4996        window: &mut Window,
 4997        cx: &mut App,
 4998    ) -> Option<Entity<SharedScreen>> {
 4999        let call = self.active_call()?;
 5000        let room = call.read(cx).room()?.clone();
 5001        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5002        let track = participant.video_tracks.values().next()?.clone();
 5003        let user = participant.user.clone();
 5004
 5005        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5006            if item.read(cx).peer_id == peer_id {
 5007                return Some(item);
 5008            }
 5009        }
 5010
 5011        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5012    }
 5013
 5014    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5015        if window.is_window_active() {
 5016            self.update_active_view_for_followers(window, cx);
 5017
 5018            if let Some(database_id) = self.database_id {
 5019                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5020                    .detach();
 5021            }
 5022        } else {
 5023            for pane in &self.panes {
 5024                pane.update(cx, |pane, cx| {
 5025                    if let Some(item) = pane.active_item() {
 5026                        item.workspace_deactivated(window, cx);
 5027                    }
 5028                    for item in pane.items() {
 5029                        if matches!(
 5030                            item.workspace_settings(cx).autosave,
 5031                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5032                        ) {
 5033                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5034                                .detach_and_log_err(cx);
 5035                        }
 5036                    }
 5037                });
 5038            }
 5039        }
 5040    }
 5041
 5042    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5043        self.active_call.as_ref().map(|(call, _)| call)
 5044    }
 5045
 5046    fn on_active_call_event(
 5047        &mut self,
 5048        _: &Entity<ActiveCall>,
 5049        event: &call::room::Event,
 5050        window: &mut Window,
 5051        cx: &mut Context<Self>,
 5052    ) {
 5053        match event {
 5054            call::room::Event::ParticipantLocationChanged { participant_id }
 5055            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5056                self.leader_updated(participant_id, window, cx);
 5057            }
 5058            _ => {}
 5059        }
 5060    }
 5061
 5062    pub fn database_id(&self) -> Option<WorkspaceId> {
 5063        self.database_id
 5064    }
 5065
 5066    pub fn session_id(&self) -> Option<String> {
 5067        self.session_id.clone()
 5068    }
 5069
 5070    fn local_paths(&self, cx: &App) -> Option<Vec<Arc<Path>>> {
 5071        let project = self.project().read(cx);
 5072
 5073        if project.is_local() {
 5074            Some(
 5075                project
 5076                    .visible_worktrees(cx)
 5077                    .map(|worktree| worktree.read(cx).abs_path())
 5078                    .collect::<Vec<_>>(),
 5079            )
 5080        } else {
 5081            None
 5082        }
 5083    }
 5084
 5085    fn update_ssh_paths(&mut self, cx: &App) {
 5086        let project = self.project().read(cx);
 5087        if !project.is_local() {
 5088            let paths: Vec<String> = project
 5089                .visible_worktrees(cx)
 5090                .map(|worktree| worktree.read(cx).abs_path().to_string_lossy().to_string())
 5091                .collect();
 5092            if let Some(ssh_project) = &mut self.serialized_ssh_project {
 5093                ssh_project.paths = paths;
 5094            }
 5095        }
 5096    }
 5097
 5098    fn serialize_ssh_paths(&mut self, window: &mut Window, cx: &mut Context<Workspace>) {
 5099        if self._schedule_serialize_ssh_paths.is_none() {
 5100            self._schedule_serialize_ssh_paths =
 5101                Some(cx.spawn_in(window, async move |this, cx| {
 5102                    cx.background_executor()
 5103                        .timer(SERIALIZATION_THROTTLE_TIME)
 5104                        .await;
 5105                    this.update_in(cx, |this, window, cx| {
 5106                        let task = if let Some(ssh_project) = &this.serialized_ssh_project {
 5107                            let ssh_project_id = ssh_project.id;
 5108                            let ssh_project_paths = ssh_project.paths.clone();
 5109                            window.spawn(cx, async move |_| {
 5110                                persistence::DB
 5111                                    .update_ssh_project_paths(ssh_project_id, ssh_project_paths)
 5112                                    .await
 5113                            })
 5114                        } else {
 5115                            Task::ready(Err(anyhow::anyhow!("No SSH project to serialize")))
 5116                        };
 5117                        task.detach();
 5118                        this._schedule_serialize_ssh_paths.take();
 5119                    })
 5120                    .log_err();
 5121                }));
 5122        }
 5123    }
 5124
 5125    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5126        match member {
 5127            Member::Axis(PaneAxis { members, .. }) => {
 5128                for child in members.iter() {
 5129                    self.remove_panes(child.clone(), window, cx)
 5130                }
 5131            }
 5132            Member::Pane(pane) => {
 5133                self.force_remove_pane(&pane, &None, window, cx);
 5134            }
 5135        }
 5136    }
 5137
 5138    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5139        self.session_id.take();
 5140        self.serialize_workspace_internal(window, cx)
 5141    }
 5142
 5143    fn force_remove_pane(
 5144        &mut self,
 5145        pane: &Entity<Pane>,
 5146        focus_on: &Option<Entity<Pane>>,
 5147        window: &mut Window,
 5148        cx: &mut Context<Workspace>,
 5149    ) {
 5150        self.panes.retain(|p| p != pane);
 5151        if let Some(focus_on) = focus_on {
 5152            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5153        } else {
 5154            if self.active_pane() == pane {
 5155                self.panes
 5156                    .last()
 5157                    .unwrap()
 5158                    .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5159            }
 5160        }
 5161        if self.last_active_center_pane == Some(pane.downgrade()) {
 5162            self.last_active_center_pane = None;
 5163        }
 5164        cx.notify();
 5165    }
 5166
 5167    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5168        if self._schedule_serialize_workspace.is_none() {
 5169            self._schedule_serialize_workspace =
 5170                Some(cx.spawn_in(window, async move |this, cx| {
 5171                    cx.background_executor()
 5172                        .timer(SERIALIZATION_THROTTLE_TIME)
 5173                        .await;
 5174                    this.update_in(cx, |this, window, cx| {
 5175                        this.serialize_workspace_internal(window, cx).detach();
 5176                        this._schedule_serialize_workspace.take();
 5177                    })
 5178                    .log_err();
 5179                }));
 5180        }
 5181    }
 5182
 5183    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5184        let Some(database_id) = self.database_id() else {
 5185            return Task::ready(());
 5186        };
 5187
 5188        fn serialize_pane_handle(
 5189            pane_handle: &Entity<Pane>,
 5190            window: &mut Window,
 5191            cx: &mut App,
 5192        ) -> SerializedPane {
 5193            let (items, active, pinned_count) = {
 5194                let pane = pane_handle.read(cx);
 5195                let active_item_id = pane.active_item().map(|item| item.item_id());
 5196                (
 5197                    pane.items()
 5198                        .filter_map(|handle| {
 5199                            let handle = handle.to_serializable_item_handle(cx)?;
 5200
 5201                            Some(SerializedItem {
 5202                                kind: Arc::from(handle.serialized_item_kind()),
 5203                                item_id: handle.item_id().as_u64(),
 5204                                active: Some(handle.item_id()) == active_item_id,
 5205                                preview: pane.is_active_preview_item(handle.item_id()),
 5206                            })
 5207                        })
 5208                        .collect::<Vec<_>>(),
 5209                    pane.has_focus(window, cx),
 5210                    pane.pinned_count(),
 5211                )
 5212            };
 5213
 5214            SerializedPane::new(items, active, pinned_count)
 5215        }
 5216
 5217        fn build_serialized_pane_group(
 5218            pane_group: &Member,
 5219            window: &mut Window,
 5220            cx: &mut App,
 5221        ) -> SerializedPaneGroup {
 5222            match pane_group {
 5223                Member::Axis(PaneAxis {
 5224                    axis,
 5225                    members,
 5226                    flexes,
 5227                    bounding_boxes: _,
 5228                }) => SerializedPaneGroup::Group {
 5229                    axis: SerializedAxis(*axis),
 5230                    children: members
 5231                        .iter()
 5232                        .map(|member| build_serialized_pane_group(member, window, cx))
 5233                        .collect::<Vec<_>>(),
 5234                    flexes: Some(flexes.lock().clone()),
 5235                },
 5236                Member::Pane(pane_handle) => {
 5237                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5238                }
 5239            }
 5240        }
 5241
 5242        fn build_serialized_docks(
 5243            this: &Workspace,
 5244            window: &mut Window,
 5245            cx: &mut App,
 5246        ) -> DockStructure {
 5247            let left_dock = this.left_dock.read(cx);
 5248            let left_visible = left_dock.is_open();
 5249            let left_active_panel = left_dock
 5250                .active_panel()
 5251                .map(|panel| panel.persistent_name().to_string());
 5252            let left_dock_zoom = left_dock
 5253                .active_panel()
 5254                .map(|panel| panel.is_zoomed(window, cx))
 5255                .unwrap_or(false);
 5256
 5257            let right_dock = this.right_dock.read(cx);
 5258            let right_visible = right_dock.is_open();
 5259            let right_active_panel = right_dock
 5260                .active_panel()
 5261                .map(|panel| panel.persistent_name().to_string());
 5262            let right_dock_zoom = right_dock
 5263                .active_panel()
 5264                .map(|panel| panel.is_zoomed(window, cx))
 5265                .unwrap_or(false);
 5266
 5267            let bottom_dock = this.bottom_dock.read(cx);
 5268            let bottom_visible = bottom_dock.is_open();
 5269            let bottom_active_panel = bottom_dock
 5270                .active_panel()
 5271                .map(|panel| panel.persistent_name().to_string());
 5272            let bottom_dock_zoom = bottom_dock
 5273                .active_panel()
 5274                .map(|panel| panel.is_zoomed(window, cx))
 5275                .unwrap_or(false);
 5276
 5277            DockStructure {
 5278                left: DockData {
 5279                    visible: left_visible,
 5280                    active_panel: left_active_panel,
 5281                    zoom: left_dock_zoom,
 5282                },
 5283                right: DockData {
 5284                    visible: right_visible,
 5285                    active_panel: right_active_panel,
 5286                    zoom: right_dock_zoom,
 5287                },
 5288                bottom: DockData {
 5289                    visible: bottom_visible,
 5290                    active_panel: bottom_active_panel,
 5291                    zoom: bottom_dock_zoom,
 5292                },
 5293            }
 5294        }
 5295
 5296        match self.serialize_workspace_location(cx) {
 5297            WorkspaceLocation::Location(location) => {
 5298                let breakpoints = self.project.update(cx, |project, cx| {
 5299                    project
 5300                        .breakpoint_store()
 5301                        .read(cx)
 5302                        .all_source_breakpoints(cx)
 5303                });
 5304
 5305                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5306                let docks = build_serialized_docks(self, window, cx);
 5307                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5308                let serialized_workspace = SerializedWorkspace {
 5309                    id: database_id,
 5310                    location,
 5311                    center_group,
 5312                    window_bounds,
 5313                    display: Default::default(),
 5314                    docks,
 5315                    centered_layout: self.centered_layout,
 5316                    session_id: self.session_id.clone(),
 5317                    breakpoints,
 5318                    window_id: Some(window.window_handle().window_id().as_u64()),
 5319                };
 5320
 5321                window.spawn(cx, async move |_| {
 5322                    persistence::DB.save_workspace(serialized_workspace).await;
 5323                })
 5324            }
 5325            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5326                persistence::DB
 5327                    .set_session_id(database_id, None)
 5328                    .await
 5329                    .log_err();
 5330            }),
 5331            WorkspaceLocation::None => Task::ready(()),
 5332        }
 5333    }
 5334
 5335    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5336        if let Some(ssh_project) = &self.serialized_ssh_project {
 5337            WorkspaceLocation::Location(SerializedWorkspaceLocation::Ssh(ssh_project.clone()))
 5338        } else if let Some(local_paths) = self.local_paths(cx) {
 5339            if !local_paths.is_empty() {
 5340                WorkspaceLocation::Location(SerializedWorkspaceLocation::from_local_paths(
 5341                    local_paths,
 5342                ))
 5343            } else {
 5344                WorkspaceLocation::DetachFromSession
 5345            }
 5346        } else {
 5347            WorkspaceLocation::None
 5348        }
 5349    }
 5350
 5351    fn update_history(&self, cx: &mut App) {
 5352        let Some(id) = self.database_id() else {
 5353            return;
 5354        };
 5355        let location = match self.serialize_workspace_location(cx) {
 5356            WorkspaceLocation::Location(location) => location,
 5357            _ => return,
 5358        };
 5359        if let Some(manager) = HistoryManager::global(cx) {
 5360            manager.update(cx, |this, cx| {
 5361                this.update_history(id, HistoryManagerEntry::new(id, &location), cx);
 5362            });
 5363        }
 5364    }
 5365
 5366    async fn serialize_items(
 5367        this: &WeakEntity<Self>,
 5368        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5369        cx: &mut AsyncWindowContext,
 5370    ) -> Result<()> {
 5371        const CHUNK_SIZE: usize = 200;
 5372
 5373        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5374
 5375        while let Some(items_received) = serializable_items.next().await {
 5376            let unique_items =
 5377                items_received
 5378                    .into_iter()
 5379                    .fold(HashMap::default(), |mut acc, item| {
 5380                        acc.entry(item.item_id()).or_insert(item);
 5381                        acc
 5382                    });
 5383
 5384            // We use into_iter() here so that the references to the items are moved into
 5385            // the tasks and not kept alive while we're sleeping.
 5386            for (_, item) in unique_items.into_iter() {
 5387                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5388                    item.serialize(workspace, false, window, cx)
 5389                }) {
 5390                    cx.background_spawn(async move { task.await.log_err() })
 5391                        .detach();
 5392                }
 5393            }
 5394
 5395            cx.background_executor()
 5396                .timer(SERIALIZATION_THROTTLE_TIME)
 5397                .await;
 5398        }
 5399
 5400        Ok(())
 5401    }
 5402
 5403    pub(crate) fn enqueue_item_serialization(
 5404        &mut self,
 5405        item: Box<dyn SerializableItemHandle>,
 5406    ) -> Result<()> {
 5407        self.serializable_items_tx
 5408            .unbounded_send(item)
 5409            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5410    }
 5411
 5412    pub(crate) fn load_workspace(
 5413        serialized_workspace: SerializedWorkspace,
 5414        paths_to_open: Vec<Option<ProjectPath>>,
 5415        window: &mut Window,
 5416        cx: &mut Context<Workspace>,
 5417    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5418        cx.spawn_in(window, async move |workspace, cx| {
 5419            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5420
 5421            let mut center_group = None;
 5422            let mut center_items = None;
 5423
 5424            // Traverse the splits tree and add to things
 5425            if let Some((group, active_pane, items)) = serialized_workspace
 5426                .center_group
 5427                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5428                .await
 5429            {
 5430                center_items = Some(items);
 5431                center_group = Some((group, active_pane))
 5432            }
 5433
 5434            let mut items_by_project_path = HashMap::default();
 5435            let mut item_ids_by_kind = HashMap::default();
 5436            let mut all_deserialized_items = Vec::default();
 5437            cx.update(|_, cx| {
 5438                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5439                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5440                        item_ids_by_kind
 5441                            .entry(serializable_item_handle.serialized_item_kind())
 5442                            .or_insert(Vec::new())
 5443                            .push(item.item_id().as_u64() as ItemId);
 5444                    }
 5445
 5446                    if let Some(project_path) = item.project_path(cx) {
 5447                        items_by_project_path.insert(project_path, item.clone());
 5448                    }
 5449                    all_deserialized_items.push(item);
 5450                }
 5451            })?;
 5452
 5453            let opened_items = paths_to_open
 5454                .into_iter()
 5455                .map(|path_to_open| {
 5456                    path_to_open
 5457                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5458                })
 5459                .collect::<Vec<_>>();
 5460
 5461            // Remove old panes from workspace panes list
 5462            workspace.update_in(cx, |workspace, window, cx| {
 5463                if let Some((center_group, active_pane)) = center_group {
 5464                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5465
 5466                    // Swap workspace center group
 5467                    workspace.center = PaneGroup::with_root(center_group);
 5468                    if let Some(active_pane) = active_pane {
 5469                        workspace.set_active_pane(&active_pane, window, cx);
 5470                        cx.focus_self(window);
 5471                    } else {
 5472                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5473                    }
 5474                }
 5475
 5476                let docks = serialized_workspace.docks;
 5477
 5478                for (dock, serialized_dock) in [
 5479                    (&mut workspace.right_dock, docks.right),
 5480                    (&mut workspace.left_dock, docks.left),
 5481                    (&mut workspace.bottom_dock, docks.bottom),
 5482                ]
 5483                .iter_mut()
 5484                {
 5485                    dock.update(cx, |dock, cx| {
 5486                        dock.serialized_dock = Some(serialized_dock.clone());
 5487                        dock.restore_state(window, cx);
 5488                    });
 5489                }
 5490
 5491                cx.notify();
 5492            })?;
 5493
 5494            let _ = project
 5495                .update(cx, |project, cx| {
 5496                    project
 5497                        .breakpoint_store()
 5498                        .update(cx, |breakpoint_store, cx| {
 5499                            breakpoint_store
 5500                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5501                        })
 5502                })?
 5503                .await;
 5504
 5505            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5506            // after loading the items, we might have different items and in order to avoid
 5507            // the database filling up, we delete items that haven't been loaded now.
 5508            //
 5509            // The items that have been loaded, have been saved after they've been added to the workspace.
 5510            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5511                item_ids_by_kind
 5512                    .into_iter()
 5513                    .map(|(item_kind, loaded_items)| {
 5514                        SerializableItemRegistry::cleanup(
 5515                            item_kind,
 5516                            serialized_workspace.id,
 5517                            loaded_items,
 5518                            window,
 5519                            cx,
 5520                        )
 5521                        .log_err()
 5522                    })
 5523                    .collect::<Vec<_>>()
 5524            })?;
 5525
 5526            futures::future::join_all(clean_up_tasks).await;
 5527
 5528            workspace
 5529                .update_in(cx, |workspace, window, cx| {
 5530                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5531                    workspace.serialize_workspace_internal(window, cx).detach();
 5532
 5533                    // Ensure that we mark the window as edited if we did load dirty items
 5534                    workspace.update_window_edited(window, cx);
 5535                })
 5536                .ok();
 5537
 5538            Ok(opened_items)
 5539        })
 5540    }
 5541
 5542    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5543        self.add_workspace_actions_listeners(div, window, cx)
 5544            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5545            .on_action(cx.listener(Self::close_all_items_and_panes))
 5546            .on_action(cx.listener(Self::save_all))
 5547            .on_action(cx.listener(Self::send_keystrokes))
 5548            .on_action(cx.listener(Self::add_folder_to_project))
 5549            .on_action(cx.listener(Self::follow_next_collaborator))
 5550            .on_action(cx.listener(Self::close_window))
 5551            .on_action(cx.listener(Self::activate_pane_at_index))
 5552            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5553            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5554            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5555                let pane = workspace.active_pane().clone();
 5556                workspace.unfollow_in_pane(&pane, window, cx);
 5557            }))
 5558            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5559                workspace
 5560                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5561                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5562            }))
 5563            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5564                workspace
 5565                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5566                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5567            }))
 5568            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5569                workspace
 5570                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5571                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5572            }))
 5573            .on_action(
 5574                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5575                    workspace.activate_previous_pane(window, cx)
 5576                }),
 5577            )
 5578            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5579                workspace.activate_next_pane(window, cx)
 5580            }))
 5581            .on_action(
 5582                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5583                    workspace.activate_next_window(cx)
 5584                }),
 5585            )
 5586            .on_action(
 5587                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5588                    workspace.activate_previous_window(cx)
 5589                }),
 5590            )
 5591            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5592                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5593            }))
 5594            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5595                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5596            }))
 5597            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5598                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5599            }))
 5600            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5601                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5602            }))
 5603            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5604                workspace.activate_next_pane(window, cx)
 5605            }))
 5606            .on_action(cx.listener(
 5607                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5608                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5609                },
 5610            ))
 5611            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5612                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5613            }))
 5614            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5615                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5616            }))
 5617            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5618                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5619            }))
 5620            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5621                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5622            }))
 5623            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5624                this.toggle_dock(DockPosition::Left, window, cx);
 5625            }))
 5626            .on_action(cx.listener(
 5627                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5628                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5629                },
 5630            ))
 5631            .on_action(cx.listener(
 5632                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5633                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5634                },
 5635            ))
 5636            .on_action(cx.listener(
 5637                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5638                    if !workspace.close_active_dock(window, cx) {
 5639                        cx.propagate();
 5640                    }
 5641                },
 5642            ))
 5643            .on_action(
 5644                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5645                    workspace.close_all_docks(window, cx);
 5646                }),
 5647            )
 5648            .on_action(cx.listener(
 5649                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5650                    workspace.clear_all_notifications(cx);
 5651                },
 5652            ))
 5653            .on_action(cx.listener(
 5654                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5655                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5656                        workspace.suppress_notification(&notification_id, cx);
 5657                    }
 5658                },
 5659            ))
 5660            .on_action(cx.listener(
 5661                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5662                    workspace.reopen_closed_item(window, cx).detach();
 5663                },
 5664            ))
 5665            .on_action(cx.listener(
 5666                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5667                    for dock in workspace.all_docks() {
 5668                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5669                            let Some(panel) = dock.read(cx).active_panel() else {
 5670                                return;
 5671                            };
 5672
 5673                            // Set to `None`, then the size will fall back to the default.
 5674                            panel.clone().set_size(None, window, cx);
 5675
 5676                            return;
 5677                        }
 5678                    }
 5679                },
 5680            ))
 5681            .on_action(cx.listener(
 5682                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5683                    for dock in workspace.all_docks() {
 5684                        if let Some(panel) = dock.read(cx).visible_panel() {
 5685                            // Set to `None`, then the size will fall back to the default.
 5686                            panel.clone().set_size(None, window, cx);
 5687                        }
 5688                    }
 5689                },
 5690            ))
 5691            .on_action(cx.listener(
 5692                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5693                    adjust_active_dock_size_by_px(
 5694                        px_with_ui_font_fallback(act.px, cx),
 5695                        workspace,
 5696                        window,
 5697                        cx,
 5698                    );
 5699                },
 5700            ))
 5701            .on_action(cx.listener(
 5702                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5703                    adjust_active_dock_size_by_px(
 5704                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5705                        workspace,
 5706                        window,
 5707                        cx,
 5708                    );
 5709                },
 5710            ))
 5711            .on_action(cx.listener(
 5712                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5713                    adjust_open_docks_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: &DecreaseOpenDocksSize, window, cx| {
 5723                    adjust_open_docks_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(Workspace::toggle_centered_layout))
 5732            .on_action(cx.listener(Workspace::cancel))
 5733    }
 5734
 5735    #[cfg(any(test, feature = "test-support"))]
 5736    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5737        use node_runtime::NodeRuntime;
 5738        use session::Session;
 5739
 5740        let client = project.read(cx).client();
 5741        let user_store = project.read(cx).user_store();
 5742        let cloud_user_store =
 5743            cx.new(|cx| CloudUserStore::new(client.cloud_client(), user_store.clone(), cx));
 5744
 5745        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5746        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5747        window.activate_window();
 5748        let app_state = Arc::new(AppState {
 5749            languages: project.read(cx).languages().clone(),
 5750            workspace_store,
 5751            cloud_user_store,
 5752            client,
 5753            user_store,
 5754            fs: project.read(cx).fs().clone(),
 5755            build_window_options: |_, _| Default::default(),
 5756            node_runtime: NodeRuntime::unavailable(),
 5757            session,
 5758        });
 5759        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5760        workspace
 5761            .active_pane
 5762            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5763        workspace
 5764    }
 5765
 5766    pub fn register_action<A: Action>(
 5767        &mut self,
 5768        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5769    ) -> &mut Self {
 5770        let callback = Arc::new(callback);
 5771
 5772        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5773            let callback = callback.clone();
 5774            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5775                (callback)(workspace, event, window, cx)
 5776            }))
 5777        }));
 5778        self
 5779    }
 5780    pub fn register_action_renderer(
 5781        &mut self,
 5782        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5783    ) -> &mut Self {
 5784        self.workspace_actions.push(Box::new(callback));
 5785        self
 5786    }
 5787
 5788    fn add_workspace_actions_listeners(
 5789        &self,
 5790        mut div: Div,
 5791        window: &mut Window,
 5792        cx: &mut Context<Self>,
 5793    ) -> Div {
 5794        for action in self.workspace_actions.iter() {
 5795            div = (action)(div, self, window, cx)
 5796        }
 5797        div
 5798    }
 5799
 5800    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5801        self.modal_layer.read(cx).has_active_modal()
 5802    }
 5803
 5804    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5805        self.modal_layer.read(cx).active_modal()
 5806    }
 5807
 5808    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5809    where
 5810        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5811    {
 5812        self.modal_layer.update(cx, |modal_layer, cx| {
 5813            modal_layer.toggle_modal(window, cx, build)
 5814        })
 5815    }
 5816
 5817    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5818        self.toast_layer
 5819            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5820    }
 5821
 5822    pub fn toggle_centered_layout(
 5823        &mut self,
 5824        _: &ToggleCenteredLayout,
 5825        _: &mut Window,
 5826        cx: &mut Context<Self>,
 5827    ) {
 5828        self.centered_layout = !self.centered_layout;
 5829        if let Some(database_id) = self.database_id() {
 5830            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5831                .detach_and_log_err(cx);
 5832        }
 5833        cx.notify();
 5834    }
 5835
 5836    fn adjust_padding(padding: Option<f32>) -> f32 {
 5837        padding
 5838            .unwrap_or(Self::DEFAULT_PADDING)
 5839            .clamp(0.0, Self::MAX_PADDING)
 5840    }
 5841
 5842    fn render_dock(
 5843        &self,
 5844        position: DockPosition,
 5845        dock: &Entity<Dock>,
 5846        window: &mut Window,
 5847        cx: &mut App,
 5848    ) -> Option<Div> {
 5849        if self.zoomed_position == Some(position) {
 5850            return None;
 5851        }
 5852
 5853        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5854            let pane = panel.pane(cx)?;
 5855            let follower_states = &self.follower_states;
 5856            leader_border_for_pane(follower_states, &pane, window, cx)
 5857        });
 5858
 5859        Some(
 5860            div()
 5861                .flex()
 5862                .flex_none()
 5863                .overflow_hidden()
 5864                .child(dock.clone())
 5865                .children(leader_border),
 5866        )
 5867    }
 5868
 5869    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5870        window.root().flatten()
 5871    }
 5872
 5873    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5874        self.zoomed.as_ref()
 5875    }
 5876
 5877    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5878        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5879            return;
 5880        };
 5881        let windows = cx.windows();
 5882        let Some(next_window) = windows
 5883            .iter()
 5884            .cycle()
 5885            .skip_while(|window| window.window_id() != current_window_id)
 5886            .nth(1)
 5887        else {
 5888            return;
 5889        };
 5890        next_window
 5891            .update(cx, |_, window, _| window.activate_window())
 5892            .ok();
 5893    }
 5894
 5895    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5896        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5897            return;
 5898        };
 5899        let windows = cx.windows();
 5900        let Some(prev_window) = windows
 5901            .iter()
 5902            .rev()
 5903            .cycle()
 5904            .skip_while(|window| window.window_id() != current_window_id)
 5905            .nth(1)
 5906        else {
 5907            return;
 5908        };
 5909        prev_window
 5910            .update(cx, |_, window, _| window.activate_window())
 5911            .ok();
 5912    }
 5913
 5914    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5915        if cx.stop_active_drag(window) {
 5916            return;
 5917        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5918            dismiss_app_notification(&notification_id, cx);
 5919        } else {
 5920            cx.propagate();
 5921        }
 5922    }
 5923
 5924    fn adjust_dock_size_by_px(
 5925        &mut self,
 5926        panel_size: Pixels,
 5927        dock_pos: DockPosition,
 5928        px: Pixels,
 5929        window: &mut Window,
 5930        cx: &mut Context<Self>,
 5931    ) {
 5932        match dock_pos {
 5933            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5934            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5935            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5936        }
 5937    }
 5938
 5939    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5940        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5941
 5942        self.left_dock.update(cx, |left_dock, cx| {
 5943            if WorkspaceSettings::get_global(cx)
 5944                .resize_all_panels_in_dock
 5945                .contains(&DockPosition::Left)
 5946            {
 5947                left_dock.resize_all_panels(Some(size), window, cx);
 5948            } else {
 5949                left_dock.resize_active_panel(Some(size), window, cx);
 5950            }
 5951        });
 5952    }
 5953
 5954    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5955        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5956        self.left_dock.read_with(cx, |left_dock, cx| {
 5957            let left_dock_size = left_dock
 5958                .active_panel_size(window, cx)
 5959                .unwrap_or(Pixels(0.0));
 5960            if left_dock_size + size > self.bounds.right() {
 5961                size = self.bounds.right() - left_dock_size
 5962            }
 5963        });
 5964        self.right_dock.update(cx, |right_dock, cx| {
 5965            if WorkspaceSettings::get_global(cx)
 5966                .resize_all_panels_in_dock
 5967                .contains(&DockPosition::Right)
 5968            {
 5969                right_dock.resize_all_panels(Some(size), window, cx);
 5970            } else {
 5971                right_dock.resize_active_panel(Some(size), window, cx);
 5972            }
 5973        });
 5974    }
 5975
 5976    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5977        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5978        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5979            if WorkspaceSettings::get_global(cx)
 5980                .resize_all_panels_in_dock
 5981                .contains(&DockPosition::Bottom)
 5982            {
 5983                bottom_dock.resize_all_panels(Some(size), window, cx);
 5984            } else {
 5985                bottom_dock.resize_active_panel(Some(size), window, cx);
 5986            }
 5987        });
 5988    }
 5989}
 5990
 5991fn leader_border_for_pane(
 5992    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5993    pane: &Entity<Pane>,
 5994    _: &Window,
 5995    cx: &App,
 5996) -> Option<Div> {
 5997    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 5998        if state.pane() == pane {
 5999            Some((*leader_id, state))
 6000        } else {
 6001            None
 6002        }
 6003    })?;
 6004
 6005    let mut leader_color = match leader_id {
 6006        CollaboratorId::PeerId(leader_peer_id) => {
 6007            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6008            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6009
 6010            cx.theme()
 6011                .players()
 6012                .color_for_participant(leader.participant_index.0)
 6013                .cursor
 6014        }
 6015        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6016    };
 6017    leader_color.fade_out(0.3);
 6018    Some(
 6019        div()
 6020            .absolute()
 6021            .size_full()
 6022            .left_0()
 6023            .top_0()
 6024            .border_2()
 6025            .border_color(leader_color),
 6026    )
 6027}
 6028
 6029fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6030    ZED_WINDOW_POSITION
 6031        .zip(*ZED_WINDOW_SIZE)
 6032        .map(|(position, size)| Bounds {
 6033            origin: position,
 6034            size,
 6035        })
 6036}
 6037
 6038fn open_items(
 6039    serialized_workspace: Option<SerializedWorkspace>,
 6040    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6041    window: &mut Window,
 6042    cx: &mut Context<Workspace>,
 6043) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6044    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6045        Workspace::load_workspace(
 6046            serialized_workspace,
 6047            project_paths_to_open
 6048                .iter()
 6049                .map(|(_, project_path)| project_path)
 6050                .cloned()
 6051                .collect(),
 6052            window,
 6053            cx,
 6054        )
 6055    });
 6056
 6057    cx.spawn_in(window, async move |workspace, cx| {
 6058        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6059
 6060        if let Some(restored_items) = restored_items {
 6061            let restored_items = restored_items.await?;
 6062
 6063            let restored_project_paths = restored_items
 6064                .iter()
 6065                .filter_map(|item| {
 6066                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6067                        .ok()
 6068                        .flatten()
 6069                })
 6070                .collect::<HashSet<_>>();
 6071
 6072            for restored_item in restored_items {
 6073                opened_items.push(restored_item.map(Ok));
 6074            }
 6075
 6076            project_paths_to_open
 6077                .iter_mut()
 6078                .for_each(|(_, project_path)| {
 6079                    if let Some(project_path_to_open) = project_path {
 6080                        if restored_project_paths.contains(project_path_to_open) {
 6081                            *project_path = None;
 6082                        }
 6083                    }
 6084                });
 6085        } else {
 6086            for _ in 0..project_paths_to_open.len() {
 6087                opened_items.push(None);
 6088            }
 6089        }
 6090        assert!(opened_items.len() == project_paths_to_open.len());
 6091
 6092        let tasks =
 6093            project_paths_to_open
 6094                .into_iter()
 6095                .enumerate()
 6096                .map(|(ix, (abs_path, project_path))| {
 6097                    let workspace = workspace.clone();
 6098                    cx.spawn(async move |cx| {
 6099                        let file_project_path = project_path?;
 6100                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6101                            workspace.project().update(cx, |project, cx| {
 6102                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6103                            })
 6104                        });
 6105
 6106                        // We only want to open file paths here. If one of the items
 6107                        // here is a directory, it was already opened further above
 6108                        // with a `find_or_create_worktree`.
 6109                        if let Ok(task) = abs_path_task {
 6110                            if task.await.map_or(true, |p| p.is_file()) {
 6111                                return Some((
 6112                                    ix,
 6113                                    workspace
 6114                                        .update_in(cx, |workspace, window, cx| {
 6115                                            workspace.open_path(
 6116                                                file_project_path,
 6117                                                None,
 6118                                                true,
 6119                                                window,
 6120                                                cx,
 6121                                            )
 6122                                        })
 6123                                        .log_err()?
 6124                                        .await,
 6125                                ));
 6126                            }
 6127                        }
 6128                        None
 6129                    })
 6130                });
 6131
 6132        let tasks = tasks.collect::<Vec<_>>();
 6133
 6134        let tasks = futures::future::join_all(tasks);
 6135        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6136            opened_items[ix] = Some(path_open_result);
 6137        }
 6138
 6139        Ok(opened_items)
 6140    })
 6141}
 6142
 6143enum ActivateInDirectionTarget {
 6144    Pane(Entity<Pane>),
 6145    Dock(Entity<Dock>),
 6146}
 6147
 6148fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6149    workspace
 6150        .update(cx, |workspace, _, cx| {
 6151            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6152                struct DatabaseFailedNotification;
 6153
 6154                workspace.show_notification(
 6155                    NotificationId::unique::<DatabaseFailedNotification>(),
 6156                    cx,
 6157                    |cx| {
 6158                        cx.new(|cx| {
 6159                            MessageNotification::new("Failed to load the database file.", cx)
 6160                                .primary_message("File an Issue")
 6161                                .primary_icon(IconName::Plus)
 6162                                .primary_on_click(|window, cx| {
 6163                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6164                                })
 6165                        })
 6166                    },
 6167                );
 6168            }
 6169        })
 6170        .log_err();
 6171}
 6172
 6173fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6174    if val == 0 {
 6175        ThemeSettings::get_global(cx).ui_font_size(cx)
 6176    } else {
 6177        px(val as f32)
 6178    }
 6179}
 6180
 6181fn adjust_active_dock_size_by_px(
 6182    px: Pixels,
 6183    workspace: &mut Workspace,
 6184    window: &mut Window,
 6185    cx: &mut Context<Workspace>,
 6186) {
 6187    let Some(active_dock) = workspace
 6188        .all_docks()
 6189        .into_iter()
 6190        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6191    else {
 6192        return;
 6193    };
 6194    let dock = active_dock.read(cx);
 6195    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6196        return;
 6197    };
 6198    let dock_pos = dock.position();
 6199    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6200}
 6201
 6202fn adjust_open_docks_size_by_px(
 6203    px: Pixels,
 6204    workspace: &mut Workspace,
 6205    window: &mut Window,
 6206    cx: &mut Context<Workspace>,
 6207) {
 6208    let docks = workspace
 6209        .all_docks()
 6210        .into_iter()
 6211        .filter_map(|dock| {
 6212            if dock.read(cx).is_open() {
 6213                let dock = dock.read(cx);
 6214                let panel_size = dock.active_panel_size(window, cx)?;
 6215                let dock_pos = dock.position();
 6216                Some((panel_size, dock_pos, px))
 6217            } else {
 6218                None
 6219            }
 6220        })
 6221        .collect::<Vec<_>>();
 6222
 6223    docks
 6224        .into_iter()
 6225        .for_each(|(panel_size, dock_pos, offset)| {
 6226            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6227        });
 6228}
 6229
 6230impl Focusable for Workspace {
 6231    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6232        self.active_pane.focus_handle(cx)
 6233    }
 6234}
 6235
 6236#[derive(Clone)]
 6237struct DraggedDock(DockPosition);
 6238
 6239impl Render for DraggedDock {
 6240    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6241        gpui::Empty
 6242    }
 6243}
 6244
 6245impl Render for Workspace {
 6246    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6247        let mut context = KeyContext::new_with_defaults();
 6248        context.add("Workspace");
 6249        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6250        if let Some(status) = self
 6251            .debugger_provider
 6252            .as_ref()
 6253            .and_then(|provider| provider.active_thread_state(cx))
 6254        {
 6255            match status {
 6256                ThreadStatus::Running | ThreadStatus::Stepping => {
 6257                    context.add("debugger_running");
 6258                }
 6259                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6260                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6261            }
 6262        }
 6263
 6264        let centered_layout = self.centered_layout
 6265            && self.center.panes().len() == 1
 6266            && self.active_item(cx).is_some();
 6267        let render_padding = |size| {
 6268            (size > 0.0).then(|| {
 6269                div()
 6270                    .h_full()
 6271                    .w(relative(size))
 6272                    .bg(cx.theme().colors().editor_background)
 6273                    .border_color(cx.theme().colors().pane_group_border)
 6274            })
 6275        };
 6276        let paddings = if centered_layout {
 6277            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6278            (
 6279                render_padding(Self::adjust_padding(settings.left_padding)),
 6280                render_padding(Self::adjust_padding(settings.right_padding)),
 6281            )
 6282        } else {
 6283            (None, None)
 6284        };
 6285        let ui_font = theme::setup_ui_font(window, cx);
 6286
 6287        let theme = cx.theme().clone();
 6288        let colors = theme.colors();
 6289        let notification_entities = self
 6290            .notifications
 6291            .iter()
 6292            .map(|(_, notification)| notification.entity_id())
 6293            .collect::<Vec<_>>();
 6294        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6295
 6296        client_side_decorations(
 6297            self.actions(div(), window, cx)
 6298                .key_context(context)
 6299                .relative()
 6300                .size_full()
 6301                .flex()
 6302                .flex_col()
 6303                .font(ui_font)
 6304                .gap_0()
 6305                .justify_start()
 6306                .items_start()
 6307                .text_color(colors.text)
 6308                .overflow_hidden()
 6309                .children(self.titlebar_item.clone())
 6310                .on_modifiers_changed(move |_, _, cx| {
 6311                    for &id in &notification_entities {
 6312                        cx.notify(id);
 6313                    }
 6314                })
 6315                .child(
 6316                    div()
 6317                        .size_full()
 6318                        .relative()
 6319                        .flex_1()
 6320                        .flex()
 6321                        .flex_col()
 6322                        .child(
 6323                            div()
 6324                                .id("workspace")
 6325                                .bg(colors.background)
 6326                                .relative()
 6327                                .flex_1()
 6328                                .w_full()
 6329                                .flex()
 6330                                .flex_col()
 6331                                .overflow_hidden()
 6332                                .border_t_1()
 6333                                .border_b_1()
 6334                                .border_color(colors.border)
 6335                                .child({
 6336                                    let this = cx.entity().clone();
 6337                                    canvas(
 6338                                        move |bounds, window, cx| {
 6339                                            this.update(cx, |this, cx| {
 6340                                                let bounds_changed = this.bounds != bounds;
 6341                                                this.bounds = bounds;
 6342
 6343                                                if bounds_changed {
 6344                                                    this.left_dock.update(cx, |dock, cx| {
 6345                                                        dock.clamp_panel_size(
 6346                                                            bounds.size.width,
 6347                                                            window,
 6348                                                            cx,
 6349                                                        )
 6350                                                    });
 6351
 6352                                                    this.right_dock.update(cx, |dock, cx| {
 6353                                                        dock.clamp_panel_size(
 6354                                                            bounds.size.width,
 6355                                                            window,
 6356                                                            cx,
 6357                                                        )
 6358                                                    });
 6359
 6360                                                    this.bottom_dock.update(cx, |dock, cx| {
 6361                                                        dock.clamp_panel_size(
 6362                                                            bounds.size.height,
 6363                                                            window,
 6364                                                            cx,
 6365                                                        )
 6366                                                    });
 6367                                                }
 6368                                            })
 6369                                        },
 6370                                        |_, _, _, _| {},
 6371                                    )
 6372                                    .absolute()
 6373                                    .size_full()
 6374                                })
 6375                                .when(self.zoomed.is_none(), |this| {
 6376                                    this.on_drag_move(cx.listener(
 6377                                        move |workspace,
 6378                                              e: &DragMoveEvent<DraggedDock>,
 6379                                              window,
 6380                                              cx| {
 6381                                            if workspace.previous_dock_drag_coordinates
 6382                                                != Some(e.event.position)
 6383                                            {
 6384                                                workspace.previous_dock_drag_coordinates =
 6385                                                    Some(e.event.position);
 6386                                                match e.drag(cx).0 {
 6387                                                    DockPosition::Left => {
 6388                                                        workspace.resize_left_dock(
 6389                                                            e.event.position.x
 6390                                                                - workspace.bounds.left(),
 6391                                                            window,
 6392                                                            cx,
 6393                                                        );
 6394                                                    }
 6395                                                    DockPosition::Right => {
 6396                                                        workspace.resize_right_dock(
 6397                                                            workspace.bounds.right()
 6398                                                                - e.event.position.x,
 6399                                                            window,
 6400                                                            cx,
 6401                                                        );
 6402                                                    }
 6403                                                    DockPosition::Bottom => {
 6404                                                        workspace.resize_bottom_dock(
 6405                                                            workspace.bounds.bottom()
 6406                                                                - e.event.position.y,
 6407                                                            window,
 6408                                                            cx,
 6409                                                        );
 6410                                                    }
 6411                                                };
 6412                                                workspace.serialize_workspace(window, cx);
 6413                                            }
 6414                                        },
 6415                                    ))
 6416                                })
 6417                                .child({
 6418                                    match bottom_dock_layout {
 6419                                        BottomDockLayout::Full => div()
 6420                                            .flex()
 6421                                            .flex_col()
 6422                                            .h_full()
 6423                                            .child(
 6424                                                div()
 6425                                                    .flex()
 6426                                                    .flex_row()
 6427                                                    .flex_1()
 6428                                                    .overflow_hidden()
 6429                                                    .children(self.render_dock(
 6430                                                        DockPosition::Left,
 6431                                                        &self.left_dock,
 6432                                                        window,
 6433                                                        cx,
 6434                                                    ))
 6435                                                    .child(
 6436                                                        div()
 6437                                                            .flex()
 6438                                                            .flex_col()
 6439                                                            .flex_1()
 6440                                                            .overflow_hidden()
 6441                                                            .child(
 6442                                                                h_flex()
 6443                                                                    .flex_1()
 6444                                                                    .when_some(
 6445                                                                        paddings.0,
 6446                                                                        |this, p| {
 6447                                                                            this.child(
 6448                                                                                p.border_r_1(),
 6449                                                                            )
 6450                                                                        },
 6451                                                                    )
 6452                                                                    .child(self.center.render(
 6453                                                                        self.zoomed.as_ref(),
 6454                                                                        &PaneRenderContext {
 6455                                                                            follower_states:
 6456                                                                                &self.follower_states,
 6457                                                                            active_call: self.active_call(),
 6458                                                                            active_pane: &self.active_pane,
 6459                                                                            app_state: &self.app_state,
 6460                                                                            project: &self.project,
 6461                                                                            workspace: &self.weak_self,
 6462                                                                        },
 6463                                                                        window,
 6464                                                                        cx,
 6465                                                                    ))
 6466                                                                    .when_some(
 6467                                                                        paddings.1,
 6468                                                                        |this, p| {
 6469                                                                            this.child(
 6470                                                                                p.border_l_1(),
 6471                                                                            )
 6472                                                                        },
 6473                                                                    ),
 6474                                                            ),
 6475                                                    )
 6476                                                    .children(self.render_dock(
 6477                                                        DockPosition::Right,
 6478                                                        &self.right_dock,
 6479                                                        window,
 6480                                                        cx,
 6481                                                    )),
 6482                                            )
 6483                                            .child(div().w_full().children(self.render_dock(
 6484                                                DockPosition::Bottom,
 6485                                                &self.bottom_dock,
 6486                                                window,
 6487                                                cx
 6488                                            ))),
 6489
 6490                                        BottomDockLayout::LeftAligned => div()
 6491                                            .flex()
 6492                                            .flex_row()
 6493                                            .h_full()
 6494                                            .child(
 6495                                                div()
 6496                                                    .flex()
 6497                                                    .flex_col()
 6498                                                    .flex_1()
 6499                                                    .h_full()
 6500                                                    .child(
 6501                                                        div()
 6502                                                            .flex()
 6503                                                            .flex_row()
 6504                                                            .flex_1()
 6505                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6506                                                            .child(
 6507                                                                div()
 6508                                                                    .flex()
 6509                                                                    .flex_col()
 6510                                                                    .flex_1()
 6511                                                                    .overflow_hidden()
 6512                                                                    .child(
 6513                                                                        h_flex()
 6514                                                                            .flex_1()
 6515                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6516                                                                            .child(self.center.render(
 6517                                                                                self.zoomed.as_ref(),
 6518                                                                                &PaneRenderContext {
 6519                                                                                    follower_states:
 6520                                                                                        &self.follower_states,
 6521                                                                                    active_call: self.active_call(),
 6522                                                                                    active_pane: &self.active_pane,
 6523                                                                                    app_state: &self.app_state,
 6524                                                                                    project: &self.project,
 6525                                                                                    workspace: &self.weak_self,
 6526                                                                                },
 6527                                                                                window,
 6528                                                                                cx,
 6529                                                                            ))
 6530                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6531                                                                    )
 6532                                                            )
 6533                                                    )
 6534                                                    .child(
 6535                                                        div()
 6536                                                            .w_full()
 6537                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6538                                                    ),
 6539                                            )
 6540                                            .children(self.render_dock(
 6541                                                DockPosition::Right,
 6542                                                &self.right_dock,
 6543                                                window,
 6544                                                cx,
 6545                                            )),
 6546
 6547                                        BottomDockLayout::RightAligned => div()
 6548                                            .flex()
 6549                                            .flex_row()
 6550                                            .h_full()
 6551                                            .children(self.render_dock(
 6552                                                DockPosition::Left,
 6553                                                &self.left_dock,
 6554                                                window,
 6555                                                cx,
 6556                                            ))
 6557                                            .child(
 6558                                                div()
 6559                                                    .flex()
 6560                                                    .flex_col()
 6561                                                    .flex_1()
 6562                                                    .h_full()
 6563                                                    .child(
 6564                                                        div()
 6565                                                            .flex()
 6566                                                            .flex_row()
 6567                                                            .flex_1()
 6568                                                            .child(
 6569                                                                div()
 6570                                                                    .flex()
 6571                                                                    .flex_col()
 6572                                                                    .flex_1()
 6573                                                                    .overflow_hidden()
 6574                                                                    .child(
 6575                                                                        h_flex()
 6576                                                                            .flex_1()
 6577                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6578                                                                            .child(self.center.render(
 6579                                                                                self.zoomed.as_ref(),
 6580                                                                                &PaneRenderContext {
 6581                                                                                    follower_states:
 6582                                                                                        &self.follower_states,
 6583                                                                                    active_call: self.active_call(),
 6584                                                                                    active_pane: &self.active_pane,
 6585                                                                                    app_state: &self.app_state,
 6586                                                                                    project: &self.project,
 6587                                                                                    workspace: &self.weak_self,
 6588                                                                                },
 6589                                                                                window,
 6590                                                                                cx,
 6591                                                                            ))
 6592                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6593                                                                    )
 6594                                                            )
 6595                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6596                                                    )
 6597                                                    .child(
 6598                                                        div()
 6599                                                            .w_full()
 6600                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6601                                                    ),
 6602                                            ),
 6603
 6604                                        BottomDockLayout::Contained => div()
 6605                                            .flex()
 6606                                            .flex_row()
 6607                                            .h_full()
 6608                                            .children(self.render_dock(
 6609                                                DockPosition::Left,
 6610                                                &self.left_dock,
 6611                                                window,
 6612                                                cx,
 6613                                            ))
 6614                                            .child(
 6615                                                div()
 6616                                                    .flex()
 6617                                                    .flex_col()
 6618                                                    .flex_1()
 6619                                                    .overflow_hidden()
 6620                                                    .child(
 6621                                                        h_flex()
 6622                                                            .flex_1()
 6623                                                            .when_some(paddings.0, |this, p| {
 6624                                                                this.child(p.border_r_1())
 6625                                                            })
 6626                                                            .child(self.center.render(
 6627                                                                self.zoomed.as_ref(),
 6628                                                                &PaneRenderContext {
 6629                                                                    follower_states:
 6630                                                                        &self.follower_states,
 6631                                                                    active_call: self.active_call(),
 6632                                                                    active_pane: &self.active_pane,
 6633                                                                    app_state: &self.app_state,
 6634                                                                    project: &self.project,
 6635                                                                    workspace: &self.weak_self,
 6636                                                                },
 6637                                                                window,
 6638                                                                cx,
 6639                                                            ))
 6640                                                            .when_some(paddings.1, |this, p| {
 6641                                                                this.child(p.border_l_1())
 6642                                                            }),
 6643                                                    )
 6644                                                    .children(self.render_dock(
 6645                                                        DockPosition::Bottom,
 6646                                                        &self.bottom_dock,
 6647                                                        window,
 6648                                                        cx,
 6649                                                    )),
 6650                                            )
 6651                                            .children(self.render_dock(
 6652                                                DockPosition::Right,
 6653                                                &self.right_dock,
 6654                                                window,
 6655                                                cx,
 6656                                            )),
 6657                                    }
 6658                                })
 6659                                .children(self.zoomed.as_ref().and_then(|view| {
 6660                                    let zoomed_view = view.upgrade()?;
 6661                                    let div = div()
 6662                                        .occlude()
 6663                                        .absolute()
 6664                                        .overflow_hidden()
 6665                                        .border_color(colors.border)
 6666                                        .bg(colors.background)
 6667                                        .child(zoomed_view)
 6668                                        .inset_0()
 6669                                        .shadow_lg();
 6670
 6671                                    Some(match self.zoomed_position {
 6672                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6673                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6674                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6675                                        None => {
 6676                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6677                                        }
 6678                                    })
 6679                                }))
 6680                                .children(self.render_notifications(window, cx)),
 6681                        )
 6682                        .child(self.status_bar.clone())
 6683                        .child(self.modal_layer.clone())
 6684                        .child(self.toast_layer.clone()),
 6685                ),
 6686            window,
 6687            cx,
 6688        )
 6689    }
 6690}
 6691
 6692impl WorkspaceStore {
 6693    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6694        Self {
 6695            workspaces: Default::default(),
 6696            _subscriptions: vec![
 6697                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6698                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6699            ],
 6700            client,
 6701        }
 6702    }
 6703
 6704    pub fn update_followers(
 6705        &self,
 6706        project_id: Option<u64>,
 6707        update: proto::update_followers::Variant,
 6708        cx: &App,
 6709    ) -> Option<()> {
 6710        let active_call = ActiveCall::try_global(cx)?;
 6711        let room_id = active_call.read(cx).room()?.read(cx).id();
 6712        self.client
 6713            .send(proto::UpdateFollowers {
 6714                room_id,
 6715                project_id,
 6716                variant: Some(update),
 6717            })
 6718            .log_err()
 6719    }
 6720
 6721    pub async fn handle_follow(
 6722        this: Entity<Self>,
 6723        envelope: TypedEnvelope<proto::Follow>,
 6724        mut cx: AsyncApp,
 6725    ) -> Result<proto::FollowResponse> {
 6726        this.update(&mut cx, |this, cx| {
 6727            let follower = Follower {
 6728                project_id: envelope.payload.project_id,
 6729                peer_id: envelope.original_sender_id()?,
 6730            };
 6731
 6732            let mut response = proto::FollowResponse::default();
 6733            this.workspaces.retain(|workspace| {
 6734                workspace
 6735                    .update(cx, |workspace, window, cx| {
 6736                        let handler_response =
 6737                            workspace.handle_follow(follower.project_id, window, cx);
 6738                        if let Some(active_view) = handler_response.active_view.clone() {
 6739                            if workspace.project.read(cx).remote_id() == follower.project_id {
 6740                                response.active_view = Some(active_view)
 6741                            }
 6742                        }
 6743                    })
 6744                    .is_ok()
 6745            });
 6746
 6747            Ok(response)
 6748        })?
 6749    }
 6750
 6751    async fn handle_update_followers(
 6752        this: Entity<Self>,
 6753        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6754        mut cx: AsyncApp,
 6755    ) -> Result<()> {
 6756        let leader_id = envelope.original_sender_id()?;
 6757        let update = envelope.payload;
 6758
 6759        this.update(&mut cx, |this, cx| {
 6760            this.workspaces.retain(|workspace| {
 6761                workspace
 6762                    .update(cx, |workspace, window, cx| {
 6763                        let project_id = workspace.project.read(cx).remote_id();
 6764                        if update.project_id != project_id && update.project_id.is_some() {
 6765                            return;
 6766                        }
 6767                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6768                    })
 6769                    .is_ok()
 6770            });
 6771            Ok(())
 6772        })?
 6773    }
 6774
 6775    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6776        &self.workspaces
 6777    }
 6778}
 6779
 6780impl ViewId {
 6781    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6782        Ok(Self {
 6783            creator: message
 6784                .creator
 6785                .map(CollaboratorId::PeerId)
 6786                .context("creator is missing")?,
 6787            id: message.id,
 6788        })
 6789    }
 6790
 6791    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6792        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6793            Some(proto::ViewId {
 6794                creator: Some(peer_id),
 6795                id: self.id,
 6796            })
 6797        } else {
 6798            None
 6799        }
 6800    }
 6801}
 6802
 6803impl FollowerState {
 6804    fn pane(&self) -> &Entity<Pane> {
 6805        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6806    }
 6807}
 6808
 6809pub trait WorkspaceHandle {
 6810    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6811}
 6812
 6813impl WorkspaceHandle for Entity<Workspace> {
 6814    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6815        self.read(cx)
 6816            .worktrees(cx)
 6817            .flat_map(|worktree| {
 6818                let worktree_id = worktree.read(cx).id();
 6819                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6820                    worktree_id,
 6821                    path: f.path.clone(),
 6822                })
 6823            })
 6824            .collect::<Vec<_>>()
 6825    }
 6826}
 6827
 6828impl std::fmt::Debug for OpenPaths {
 6829    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 6830        f.debug_struct("OpenPaths")
 6831            .field("paths", &self.paths)
 6832            .finish()
 6833    }
 6834}
 6835
 6836pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6837    DB.last_workspace().await.log_err().flatten()
 6838}
 6839
 6840pub fn last_session_workspace_locations(
 6841    last_session_id: &str,
 6842    last_session_window_stack: Option<Vec<WindowId>>,
 6843) -> Option<Vec<SerializedWorkspaceLocation>> {
 6844    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6845        .log_err()
 6846}
 6847
 6848actions!(
 6849    collab,
 6850    [
 6851        /// Opens the channel notes for the current call.
 6852        ///
 6853        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6854        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6855        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6856        OpenChannelNotes,
 6857        /// Mutes your microphone.
 6858        Mute,
 6859        /// Deafens yourself (mute both microphone and speakers).
 6860        Deafen,
 6861        /// Leaves the current call.
 6862        LeaveCall,
 6863        /// Shares the current project with collaborators.
 6864        ShareProject,
 6865        /// Shares your screen with collaborators.
 6866        ScreenShare
 6867    ]
 6868);
 6869actions!(
 6870    zed,
 6871    [
 6872        /// Opens the Zed log file.
 6873        OpenLog
 6874    ]
 6875);
 6876
 6877async fn join_channel_internal(
 6878    channel_id: ChannelId,
 6879    app_state: &Arc<AppState>,
 6880    requesting_window: Option<WindowHandle<Workspace>>,
 6881    active_call: &Entity<ActiveCall>,
 6882    cx: &mut AsyncApp,
 6883) -> Result<bool> {
 6884    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6885        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6886            return (false, None);
 6887        };
 6888
 6889        let already_in_channel = room.channel_id() == Some(channel_id);
 6890        let should_prompt = room.is_sharing_project()
 6891            && !room.remote_participants().is_empty()
 6892            && !already_in_channel;
 6893        let open_room = if already_in_channel {
 6894            active_call.room().cloned()
 6895        } else {
 6896            None
 6897        };
 6898        (should_prompt, open_room)
 6899    })?;
 6900
 6901    if let Some(room) = open_room {
 6902        let task = room.update(cx, |room, cx| {
 6903            if let Some((project, host)) = room.most_active_project(cx) {
 6904                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6905            }
 6906
 6907            None
 6908        })?;
 6909        if let Some(task) = task {
 6910            task.await?;
 6911        }
 6912        return anyhow::Ok(true);
 6913    }
 6914
 6915    if should_prompt {
 6916        if let Some(workspace) = requesting_window {
 6917            let answer = workspace
 6918                .update(cx, |_, window, cx| {
 6919                    window.prompt(
 6920                        PromptLevel::Warning,
 6921                        "Do you want to switch channels?",
 6922                        Some("Leaving this call will unshare your current project."),
 6923                        &["Yes, Join Channel", "Cancel"],
 6924                        cx,
 6925                    )
 6926                })?
 6927                .await;
 6928
 6929            if answer == Ok(1) {
 6930                return Ok(false);
 6931            }
 6932        } else {
 6933            return Ok(false); // unreachable!() hopefully
 6934        }
 6935    }
 6936
 6937    let client = cx.update(|cx| active_call.read(cx).client())?;
 6938
 6939    let mut client_status = client.status();
 6940
 6941    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6942    'outer: loop {
 6943        let Some(status) = client_status.recv().await else {
 6944            anyhow::bail!("error connecting");
 6945        };
 6946
 6947        match status {
 6948            Status::Connecting
 6949            | Status::Authenticating
 6950            | Status::Reconnecting
 6951            | Status::Reauthenticating => continue,
 6952            Status::Connected { .. } => break 'outer,
 6953            Status::SignedOut => return Err(ErrorCode::SignedOut.into()),
 6954            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6955            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6956                return Err(ErrorCode::Disconnected.into());
 6957            }
 6958        }
 6959    }
 6960
 6961    let room = active_call
 6962        .update(cx, |active_call, cx| {
 6963            active_call.join_channel(channel_id, cx)
 6964        })?
 6965        .await?;
 6966
 6967    let Some(room) = room else {
 6968        return anyhow::Ok(true);
 6969    };
 6970
 6971    room.update(cx, |room, _| room.room_update_completed())?
 6972        .await;
 6973
 6974    let task = room.update(cx, |room, cx| {
 6975        if let Some((project, host)) = room.most_active_project(cx) {
 6976            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6977        }
 6978
 6979        // If you are the first to join a channel, see if you should share your project.
 6980        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
 6981            if let Some(workspace) = requesting_window {
 6982                let project = workspace.update(cx, |workspace, _, cx| {
 6983                    let project = workspace.project.read(cx);
 6984
 6985                    if !CallSettings::get_global(cx).share_on_join {
 6986                        return None;
 6987                    }
 6988
 6989                    if (project.is_local() || project.is_via_ssh())
 6990                        && project.visible_worktrees(cx).any(|tree| {
 6991                            tree.read(cx)
 6992                                .root_entry()
 6993                                .map_or(false, |entry| entry.is_dir())
 6994                        })
 6995                    {
 6996                        Some(workspace.project.clone())
 6997                    } else {
 6998                        None
 6999                    }
 7000                });
 7001                if let Ok(Some(project)) = project {
 7002                    return Some(cx.spawn(async move |room, cx| {
 7003                        room.update(cx, |room, cx| room.share_project(project, cx))?
 7004                            .await?;
 7005                        Ok(())
 7006                    }));
 7007                }
 7008            }
 7009        }
 7010
 7011        None
 7012    })?;
 7013    if let Some(task) = task {
 7014        task.await?;
 7015        return anyhow::Ok(true);
 7016    }
 7017    anyhow::Ok(false)
 7018}
 7019
 7020pub fn join_channel(
 7021    channel_id: ChannelId,
 7022    app_state: Arc<AppState>,
 7023    requesting_window: Option<WindowHandle<Workspace>>,
 7024    cx: &mut App,
 7025) -> Task<Result<()>> {
 7026    let active_call = ActiveCall::global(cx);
 7027    cx.spawn(async move |cx| {
 7028        let result = join_channel_internal(
 7029            channel_id,
 7030            &app_state,
 7031            requesting_window,
 7032            &active_call,
 7033             cx,
 7034        )
 7035            .await;
 7036
 7037        // join channel succeeded, and opened a window
 7038        if matches!(result, Ok(true)) {
 7039            return anyhow::Ok(());
 7040        }
 7041
 7042        // find an existing workspace to focus and show call controls
 7043        let mut active_window =
 7044            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7045        if active_window.is_none() {
 7046            // no open workspaces, make one to show the error in (blergh)
 7047            let (window_handle, _) = cx
 7048                .update(|cx| {
 7049                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7050                })?
 7051                .await?;
 7052
 7053            if result.is_ok() {
 7054                cx.update(|cx| {
 7055                    cx.dispatch_action(&OpenChannelNotes);
 7056                }).log_err();
 7057            }
 7058
 7059            active_window = Some(window_handle);
 7060        }
 7061
 7062        if let Err(err) = result {
 7063            log::error!("failed to join channel: {}", err);
 7064            if let Some(active_window) = active_window {
 7065                active_window
 7066                    .update(cx, |_, window, cx| {
 7067                        let detail: SharedString = match err.error_code() {
 7068                            ErrorCode::SignedOut => {
 7069                                "Please sign in to continue.".into()
 7070                            }
 7071                            ErrorCode::UpgradeRequired => {
 7072                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7073                            }
 7074                            ErrorCode::NoSuchChannel => {
 7075                                "No matching channel was found. Please check the link and try again.".into()
 7076                            }
 7077                            ErrorCode::Forbidden => {
 7078                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7079                            }
 7080                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7081                            _ => format!("{}\n\nPlease try again.", err).into(),
 7082                        };
 7083                        window.prompt(
 7084                            PromptLevel::Critical,
 7085                            "Failed to join channel",
 7086                            Some(&detail),
 7087                            &["Ok"],
 7088                        cx)
 7089                    })?
 7090                    .await
 7091                    .ok();
 7092            }
 7093        }
 7094
 7095        // return ok, we showed the error to the user.
 7096        anyhow::Ok(())
 7097    })
 7098}
 7099
 7100pub async fn get_any_active_workspace(
 7101    app_state: Arc<AppState>,
 7102    mut cx: AsyncApp,
 7103) -> anyhow::Result<WindowHandle<Workspace>> {
 7104    // find an existing workspace to focus and show call controls
 7105    let active_window = activate_any_workspace_window(&mut cx);
 7106    if active_window.is_none() {
 7107        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7108            .await?;
 7109    }
 7110    activate_any_workspace_window(&mut cx).context("could not open zed")
 7111}
 7112
 7113fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7114    cx.update(|cx| {
 7115        if let Some(workspace_window) = cx
 7116            .active_window()
 7117            .and_then(|window| window.downcast::<Workspace>())
 7118        {
 7119            return Some(workspace_window);
 7120        }
 7121
 7122        for window in cx.windows() {
 7123            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7124                workspace_window
 7125                    .update(cx, |_, window, _| window.activate_window())
 7126                    .ok();
 7127                return Some(workspace_window);
 7128            }
 7129        }
 7130        None
 7131    })
 7132    .ok()
 7133    .flatten()
 7134}
 7135
 7136pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7137    cx.windows()
 7138        .into_iter()
 7139        .filter_map(|window| window.downcast::<Workspace>())
 7140        .filter(|workspace| {
 7141            workspace
 7142                .read(cx)
 7143                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7144        })
 7145        .collect()
 7146}
 7147
 7148#[derive(Default)]
 7149pub struct OpenOptions {
 7150    pub visible: Option<OpenVisible>,
 7151    pub focus: Option<bool>,
 7152    pub open_new_workspace: Option<bool>,
 7153    pub replace_window: Option<WindowHandle<Workspace>>,
 7154    pub env: Option<HashMap<String, String>>,
 7155}
 7156
 7157#[allow(clippy::type_complexity)]
 7158pub fn open_paths(
 7159    abs_paths: &[PathBuf],
 7160    app_state: Arc<AppState>,
 7161    open_options: OpenOptions,
 7162    cx: &mut App,
 7163) -> Task<
 7164    anyhow::Result<(
 7165        WindowHandle<Workspace>,
 7166        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7167    )>,
 7168> {
 7169    let abs_paths = abs_paths.to_vec();
 7170    let mut existing = None;
 7171    let mut best_match = None;
 7172    let mut open_visible = OpenVisible::All;
 7173
 7174    cx.spawn(async move |cx| {
 7175        if open_options.open_new_workspace != Some(true) {
 7176            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7177            let all_metadatas = futures::future::join_all(all_paths)
 7178                .await
 7179                .into_iter()
 7180                .filter_map(|result| result.ok().flatten())
 7181                .collect::<Vec<_>>();
 7182
 7183            cx.update(|cx| {
 7184                for window in local_workspace_windows(&cx) {
 7185                    if let Ok(workspace) = window.read(&cx) {
 7186                        let m = workspace.project.read(&cx).visibility_for_paths(
 7187                            &abs_paths,
 7188                            &all_metadatas,
 7189                            open_options.open_new_workspace == None,
 7190                            cx,
 7191                        );
 7192                        if m > best_match {
 7193                            existing = Some(window);
 7194                            best_match = m;
 7195                        } else if best_match.is_none()
 7196                            && open_options.open_new_workspace == Some(false)
 7197                        {
 7198                            existing = Some(window)
 7199                        }
 7200                    }
 7201                }
 7202            })?;
 7203
 7204            if open_options.open_new_workspace.is_none() && existing.is_none() {
 7205                if all_metadatas.iter().all(|file| !file.is_dir) {
 7206                    cx.update(|cx| {
 7207                        if let Some(window) = cx
 7208                            .active_window()
 7209                            .and_then(|window| window.downcast::<Workspace>())
 7210                        {
 7211                            if let Ok(workspace) = window.read(cx) {
 7212                                let project = workspace.project().read(cx);
 7213                                if project.is_local() && !project.is_via_collab() {
 7214                                    existing = Some(window);
 7215                                    open_visible = OpenVisible::None;
 7216                                    return;
 7217                                }
 7218                            }
 7219                        }
 7220                        for window in local_workspace_windows(cx) {
 7221                            if let Ok(workspace) = window.read(cx) {
 7222                                let project = workspace.project().read(cx);
 7223                                if project.is_via_collab() {
 7224                                    continue;
 7225                                }
 7226                                existing = Some(window);
 7227                                open_visible = OpenVisible::None;
 7228                                break;
 7229                            }
 7230                        }
 7231                    })?;
 7232                }
 7233            }
 7234        }
 7235
 7236        if let Some(existing) = existing {
 7237            let open_task = existing
 7238                .update(cx, |workspace, window, cx| {
 7239                    window.activate_window();
 7240                    workspace.open_paths(
 7241                        abs_paths,
 7242                        OpenOptions {
 7243                            visible: Some(open_visible),
 7244                            ..Default::default()
 7245                        },
 7246                        None,
 7247                        window,
 7248                        cx,
 7249                    )
 7250                })?
 7251                .await;
 7252
 7253            _ = existing.update(cx, |workspace, _, cx| {
 7254                for item in open_task.iter().flatten() {
 7255                    if let Err(e) = item {
 7256                        workspace.show_error(&e, cx);
 7257                    }
 7258                }
 7259            });
 7260
 7261            Ok((existing, open_task))
 7262        } else {
 7263            cx.update(move |cx| {
 7264                Workspace::new_local(
 7265                    abs_paths,
 7266                    app_state.clone(),
 7267                    open_options.replace_window,
 7268                    open_options.env,
 7269                    cx,
 7270                )
 7271            })?
 7272            .await
 7273        }
 7274    })
 7275}
 7276
 7277pub fn open_new(
 7278    open_options: OpenOptions,
 7279    app_state: Arc<AppState>,
 7280    cx: &mut App,
 7281    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7282) -> Task<anyhow::Result<()>> {
 7283    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7284    cx.spawn(async move |cx| {
 7285        let (workspace, opened_paths) = task.await?;
 7286        workspace.update(cx, |workspace, window, cx| {
 7287            if opened_paths.is_empty() {
 7288                init(workspace, window, cx)
 7289            }
 7290        })?;
 7291        Ok(())
 7292    })
 7293}
 7294
 7295pub fn create_and_open_local_file(
 7296    path: &'static Path,
 7297    window: &mut Window,
 7298    cx: &mut Context<Workspace>,
 7299    default_content: impl 'static + Send + FnOnce() -> Rope,
 7300) -> Task<Result<Box<dyn ItemHandle>>> {
 7301    cx.spawn_in(window, async move |workspace, cx| {
 7302        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7303        if !fs.is_file(path).await {
 7304            fs.create_file(path, Default::default()).await?;
 7305            fs.save(path, &default_content(), Default::default())
 7306                .await?;
 7307        }
 7308
 7309        let mut items = workspace
 7310            .update_in(cx, |workspace, window, cx| {
 7311                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7312                    workspace.open_paths(
 7313                        vec![path.to_path_buf()],
 7314                        OpenOptions {
 7315                            visible: Some(OpenVisible::None),
 7316                            ..Default::default()
 7317                        },
 7318                        None,
 7319                        window,
 7320                        cx,
 7321                    )
 7322                })
 7323            })?
 7324            .await?
 7325            .await;
 7326
 7327        let item = items.pop().flatten();
 7328        item.with_context(|| format!("path {path:?} is not a file"))?
 7329    })
 7330}
 7331
 7332pub fn open_ssh_project_with_new_connection(
 7333    window: WindowHandle<Workspace>,
 7334    connection_options: SshConnectionOptions,
 7335    cancel_rx: oneshot::Receiver<()>,
 7336    delegate: Arc<dyn SshClientDelegate>,
 7337    app_state: Arc<AppState>,
 7338    paths: Vec<PathBuf>,
 7339    cx: &mut App,
 7340) -> Task<Result<()>> {
 7341    cx.spawn(async move |cx| {
 7342        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7343            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7344
 7345        let session = match cx
 7346            .update(|cx| {
 7347                remote::SshRemoteClient::new(
 7348                    ConnectionIdentifier::Workspace(workspace_id.0),
 7349                    connection_options,
 7350                    cancel_rx,
 7351                    delegate,
 7352                    cx,
 7353                )
 7354            })?
 7355            .await?
 7356        {
 7357            Some(result) => result,
 7358            None => return Ok(()),
 7359        };
 7360
 7361        let project = cx.update(|cx| {
 7362            project::Project::ssh(
 7363                session,
 7364                app_state.client.clone(),
 7365                app_state.node_runtime.clone(),
 7366                app_state.user_store.clone(),
 7367                app_state.languages.clone(),
 7368                app_state.fs.clone(),
 7369                cx,
 7370            )
 7371        })?;
 7372
 7373        open_ssh_project_inner(
 7374            project,
 7375            paths,
 7376            serialized_ssh_project,
 7377            workspace_id,
 7378            serialized_workspace,
 7379            app_state,
 7380            window,
 7381            cx,
 7382        )
 7383        .await
 7384    })
 7385}
 7386
 7387pub fn open_ssh_project_with_existing_connection(
 7388    connection_options: SshConnectionOptions,
 7389    project: Entity<Project>,
 7390    paths: Vec<PathBuf>,
 7391    app_state: Arc<AppState>,
 7392    window: WindowHandle<Workspace>,
 7393    cx: &mut AsyncApp,
 7394) -> Task<Result<()>> {
 7395    cx.spawn(async move |cx| {
 7396        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7397            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7398
 7399        open_ssh_project_inner(
 7400            project,
 7401            paths,
 7402            serialized_ssh_project,
 7403            workspace_id,
 7404            serialized_workspace,
 7405            app_state,
 7406            window,
 7407            cx,
 7408        )
 7409        .await
 7410    })
 7411}
 7412
 7413async fn open_ssh_project_inner(
 7414    project: Entity<Project>,
 7415    paths: Vec<PathBuf>,
 7416    serialized_ssh_project: SerializedSshProject,
 7417    workspace_id: WorkspaceId,
 7418    serialized_workspace: Option<SerializedWorkspace>,
 7419    app_state: Arc<AppState>,
 7420    window: WindowHandle<Workspace>,
 7421    cx: &mut AsyncApp,
 7422) -> Result<()> {
 7423    let toolchains = DB.toolchains(workspace_id).await?;
 7424    for (toolchain, worktree_id, path) in toolchains {
 7425        project
 7426            .update(cx, |this, cx| {
 7427                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7428            })?
 7429            .await;
 7430    }
 7431    let mut project_paths_to_open = vec![];
 7432    let mut project_path_errors = vec![];
 7433
 7434    for path in paths {
 7435        let result = cx
 7436            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7437            .await;
 7438        match result {
 7439            Ok((_, project_path)) => {
 7440                project_paths_to_open.push((path.clone(), Some(project_path)));
 7441            }
 7442            Err(error) => {
 7443                project_path_errors.push(error);
 7444            }
 7445        };
 7446    }
 7447
 7448    if project_paths_to_open.is_empty() {
 7449        return Err(project_path_errors.pop().context("no paths given")?);
 7450    }
 7451
 7452    if let Some(detach_session_task) = window
 7453        .update(cx, |_workspace, window, cx| {
 7454            cx.spawn_in(window, async move |this, cx| {
 7455                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7456            })
 7457        })
 7458        .ok()
 7459    {
 7460        detach_session_task.await.ok();
 7461    }
 7462
 7463    cx.update_window(window.into(), |_, window, cx| {
 7464        window.replace_root(cx, |window, cx| {
 7465            telemetry::event!("SSH Project Opened");
 7466
 7467            let mut workspace =
 7468                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7469            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7470            workspace.update_history(cx);
 7471
 7472            if let Some(ref serialized) = serialized_workspace {
 7473                workspace.centered_layout = serialized.centered_layout;
 7474            }
 7475
 7476            workspace
 7477        });
 7478    })?;
 7479
 7480    window
 7481        .update(cx, |_, window, cx| {
 7482            window.activate_window();
 7483            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7484        })?
 7485        .await?;
 7486
 7487    window.update(cx, |workspace, _, cx| {
 7488        for error in project_path_errors {
 7489            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7490                if let Some(path) = error.error_tag("path") {
 7491                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7492                }
 7493            } else {
 7494                workspace.show_error(&error, cx)
 7495            }
 7496        }
 7497    })?;
 7498
 7499    Ok(())
 7500}
 7501
 7502fn serialize_ssh_project(
 7503    connection_options: SshConnectionOptions,
 7504    paths: Vec<PathBuf>,
 7505    cx: &AsyncApp,
 7506) -> Task<
 7507    Result<(
 7508        SerializedSshProject,
 7509        WorkspaceId,
 7510        Option<SerializedWorkspace>,
 7511    )>,
 7512> {
 7513    cx.background_spawn(async move {
 7514        let serialized_ssh_project = persistence::DB
 7515            .get_or_create_ssh_project(
 7516                connection_options.host.clone(),
 7517                connection_options.port,
 7518                paths
 7519                    .iter()
 7520                    .map(|path| path.to_string_lossy().to_string())
 7521                    .collect::<Vec<_>>(),
 7522                connection_options.username.clone(),
 7523            )
 7524            .await?;
 7525
 7526        let serialized_workspace =
 7527            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7528
 7529        let workspace_id = if let Some(workspace_id) =
 7530            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7531        {
 7532            workspace_id
 7533        } else {
 7534            persistence::DB.next_id().await?
 7535        };
 7536
 7537        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7538    })
 7539}
 7540
 7541pub fn join_in_room_project(
 7542    project_id: u64,
 7543    follow_user_id: u64,
 7544    app_state: Arc<AppState>,
 7545    cx: &mut App,
 7546) -> Task<Result<()>> {
 7547    let windows = cx.windows();
 7548    cx.spawn(async move |cx| {
 7549        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7550            window_handle
 7551                .downcast::<Workspace>()
 7552                .and_then(|window_handle| {
 7553                    window_handle
 7554                        .update(cx, |workspace, _window, cx| {
 7555                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7556                                Some(window_handle)
 7557                            } else {
 7558                                None
 7559                            }
 7560                        })
 7561                        .unwrap_or(None)
 7562                })
 7563        });
 7564
 7565        let workspace = if let Some(existing_workspace) = existing_workspace {
 7566            existing_workspace
 7567        } else {
 7568            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7569            let room = active_call
 7570                .read_with(cx, |call, _| call.room().cloned())?
 7571                .context("not in a call")?;
 7572            let project = room
 7573                .update(cx, |room, cx| {
 7574                    room.join_project(
 7575                        project_id,
 7576                        app_state.languages.clone(),
 7577                        app_state.fs.clone(),
 7578                        cx,
 7579                    )
 7580                })?
 7581                .await?;
 7582
 7583            let window_bounds_override = window_bounds_env_override();
 7584            cx.update(|cx| {
 7585                let mut options = (app_state.build_window_options)(None, cx);
 7586                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7587                cx.open_window(options, |window, cx| {
 7588                    cx.new(|cx| {
 7589                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7590                    })
 7591                })
 7592            })??
 7593        };
 7594
 7595        workspace.update(cx, |workspace, window, cx| {
 7596            cx.activate(true);
 7597            window.activate_window();
 7598
 7599            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7600                let follow_peer_id = room
 7601                    .read(cx)
 7602                    .remote_participants()
 7603                    .iter()
 7604                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7605                    .map(|(_, p)| p.peer_id)
 7606                    .or_else(|| {
 7607                        // If we couldn't follow the given user, follow the host instead.
 7608                        let collaborator = workspace
 7609                            .project()
 7610                            .read(cx)
 7611                            .collaborators()
 7612                            .values()
 7613                            .find(|collaborator| collaborator.is_host)?;
 7614                        Some(collaborator.peer_id)
 7615                    });
 7616
 7617                if let Some(follow_peer_id) = follow_peer_id {
 7618                    workspace.follow(follow_peer_id, window, cx);
 7619                }
 7620            }
 7621        })?;
 7622
 7623        anyhow::Ok(())
 7624    })
 7625}
 7626
 7627pub fn reload(reload: &Reload, cx: &mut App) {
 7628    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7629    let mut workspace_windows = cx
 7630        .windows()
 7631        .into_iter()
 7632        .filter_map(|window| window.downcast::<Workspace>())
 7633        .collect::<Vec<_>>();
 7634
 7635    // If multiple windows have unsaved changes, and need a save prompt,
 7636    // prompt in the active window before switching to a different window.
 7637    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7638
 7639    let mut prompt = None;
 7640    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7641        prompt = window
 7642            .update(cx, |_, window, cx| {
 7643                window.prompt(
 7644                    PromptLevel::Info,
 7645                    "Are you sure you want to restart?",
 7646                    None,
 7647                    &["Restart", "Cancel"],
 7648                    cx,
 7649                )
 7650            })
 7651            .ok();
 7652    }
 7653
 7654    let binary_path = reload.binary_path.clone();
 7655    cx.spawn(async move |cx| {
 7656        if let Some(prompt) = prompt {
 7657            let answer = prompt.await?;
 7658            if answer != 0 {
 7659                return Ok(());
 7660            }
 7661        }
 7662
 7663        // If the user cancels any save prompt, then keep the app open.
 7664        for window in workspace_windows {
 7665            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7666                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7667            }) {
 7668                if !should_close.await? {
 7669                    return Ok(());
 7670                }
 7671            }
 7672        }
 7673
 7674        cx.update(|cx| cx.restart(binary_path))
 7675    })
 7676    .detach_and_log_err(cx);
 7677}
 7678
 7679fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7680    let mut parts = value.split(',');
 7681    let x: usize = parts.next()?.parse().ok()?;
 7682    let y: usize = parts.next()?.parse().ok()?;
 7683    Some(point(px(x as f32), px(y as f32)))
 7684}
 7685
 7686fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7687    let mut parts = value.split(',');
 7688    let width: usize = parts.next()?.parse().ok()?;
 7689    let height: usize = parts.next()?.parse().ok()?;
 7690    Some(size(px(width as f32), px(height as f32)))
 7691}
 7692
 7693/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7694pub fn client_side_decorations(
 7695    element: impl IntoElement,
 7696    window: &mut Window,
 7697    cx: &mut App,
 7698) -> Stateful<Div> {
 7699    const BORDER_SIZE: Pixels = px(1.0);
 7700    let decorations = window.window_decorations();
 7701
 7702    match decorations {
 7703        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7704        Decorations::Server { .. } => window.set_client_inset(px(0.0)),
 7705    }
 7706
 7707    struct GlobalResizeEdge(ResizeEdge);
 7708    impl Global for GlobalResizeEdge {}
 7709
 7710    div()
 7711        .id("window-backdrop")
 7712        .bg(transparent_black())
 7713        .map(|div| match decorations {
 7714            Decorations::Server => div,
 7715            Decorations::Client { tiling, .. } => div
 7716                .when(!(tiling.top || tiling.right), |div| {
 7717                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7718                })
 7719                .when(!(tiling.top || tiling.left), |div| {
 7720                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7721                })
 7722                .when(!(tiling.bottom || tiling.right), |div| {
 7723                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7724                })
 7725                .when(!(tiling.bottom || tiling.left), |div| {
 7726                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7727                })
 7728                .when(!tiling.top, |div| {
 7729                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7730                })
 7731                .when(!tiling.bottom, |div| {
 7732                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7733                })
 7734                .when(!tiling.left, |div| {
 7735                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7736                })
 7737                .when(!tiling.right, |div| {
 7738                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7739                })
 7740                .on_mouse_move(move |e, window, cx| {
 7741                    let size = window.window_bounds().get_bounds().size;
 7742                    let pos = e.position;
 7743
 7744                    let new_edge =
 7745                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7746
 7747                    let edge = cx.try_global::<GlobalResizeEdge>();
 7748                    if new_edge != edge.map(|edge| edge.0) {
 7749                        window
 7750                            .window_handle()
 7751                            .update(cx, |workspace, _, cx| {
 7752                                cx.notify(workspace.entity_id());
 7753                            })
 7754                            .ok();
 7755                    }
 7756                })
 7757                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7758                    let size = window.window_bounds().get_bounds().size;
 7759                    let pos = e.position;
 7760
 7761                    let edge = match resize_edge(
 7762                        pos,
 7763                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7764                        size,
 7765                        tiling,
 7766                    ) {
 7767                        Some(value) => value,
 7768                        None => return,
 7769                    };
 7770
 7771                    window.start_window_resize(edge);
 7772                }),
 7773        })
 7774        .size_full()
 7775        .child(
 7776            div()
 7777                .cursor(CursorStyle::Arrow)
 7778                .map(|div| match decorations {
 7779                    Decorations::Server => div,
 7780                    Decorations::Client { tiling } => div
 7781                        .border_color(cx.theme().colors().border)
 7782                        .when(!(tiling.top || tiling.right), |div| {
 7783                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7784                        })
 7785                        .when(!(tiling.top || tiling.left), |div| {
 7786                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7787                        })
 7788                        .when(!(tiling.bottom || tiling.right), |div| {
 7789                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7790                        })
 7791                        .when(!(tiling.bottom || tiling.left), |div| {
 7792                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7793                        })
 7794                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7795                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7796                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7797                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7798                        .when(!tiling.is_tiled(), |div| {
 7799                            div.shadow(vec![gpui::BoxShadow {
 7800                                color: Hsla {
 7801                                    h: 0.,
 7802                                    s: 0.,
 7803                                    l: 0.,
 7804                                    a: 0.4,
 7805                                },
 7806                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7807                                spread_radius: px(0.),
 7808                                offset: point(px(0.0), px(0.0)),
 7809                            }])
 7810                        }),
 7811                })
 7812                .on_mouse_move(|_e, _, cx| {
 7813                    cx.stop_propagation();
 7814                })
 7815                .size_full()
 7816                .child(element),
 7817        )
 7818        .map(|div| match decorations {
 7819            Decorations::Server => div,
 7820            Decorations::Client { tiling, .. } => div.child(
 7821                canvas(
 7822                    |_bounds, window, _| {
 7823                        window.insert_hitbox(
 7824                            Bounds::new(
 7825                                point(px(0.0), px(0.0)),
 7826                                window.window_bounds().get_bounds().size,
 7827                            ),
 7828                            HitboxBehavior::Normal,
 7829                        )
 7830                    },
 7831                    move |_bounds, hitbox, window, cx| {
 7832                        let mouse = window.mouse_position();
 7833                        let size = window.window_bounds().get_bounds().size;
 7834                        let Some(edge) =
 7835                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7836                        else {
 7837                            return;
 7838                        };
 7839                        cx.set_global(GlobalResizeEdge(edge));
 7840                        window.set_cursor_style(
 7841                            match edge {
 7842                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7843                                ResizeEdge::Left | ResizeEdge::Right => {
 7844                                    CursorStyle::ResizeLeftRight
 7845                                }
 7846                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7847                                    CursorStyle::ResizeUpLeftDownRight
 7848                                }
 7849                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7850                                    CursorStyle::ResizeUpRightDownLeft
 7851                                }
 7852                            },
 7853                            &hitbox,
 7854                        );
 7855                    },
 7856                )
 7857                .size_full()
 7858                .absolute(),
 7859            ),
 7860        })
 7861}
 7862
 7863fn resize_edge(
 7864    pos: Point<Pixels>,
 7865    shadow_size: Pixels,
 7866    window_size: Size<Pixels>,
 7867    tiling: Tiling,
 7868) -> Option<ResizeEdge> {
 7869    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7870    if bounds.contains(&pos) {
 7871        return None;
 7872    }
 7873
 7874    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7875    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7876    if !tiling.top && top_left_bounds.contains(&pos) {
 7877        return Some(ResizeEdge::TopLeft);
 7878    }
 7879
 7880    let top_right_bounds = Bounds::new(
 7881        Point::new(window_size.width - corner_size.width, px(0.)),
 7882        corner_size,
 7883    );
 7884    if !tiling.top && top_right_bounds.contains(&pos) {
 7885        return Some(ResizeEdge::TopRight);
 7886    }
 7887
 7888    let bottom_left_bounds = Bounds::new(
 7889        Point::new(px(0.), window_size.height - corner_size.height),
 7890        corner_size,
 7891    );
 7892    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7893        return Some(ResizeEdge::BottomLeft);
 7894    }
 7895
 7896    let bottom_right_bounds = Bounds::new(
 7897        Point::new(
 7898            window_size.width - corner_size.width,
 7899            window_size.height - corner_size.height,
 7900        ),
 7901        corner_size,
 7902    );
 7903    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7904        return Some(ResizeEdge::BottomRight);
 7905    }
 7906
 7907    if !tiling.top && pos.y < shadow_size {
 7908        Some(ResizeEdge::Top)
 7909    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7910        Some(ResizeEdge::Bottom)
 7911    } else if !tiling.left && pos.x < shadow_size {
 7912        Some(ResizeEdge::Left)
 7913    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7914        Some(ResizeEdge::Right)
 7915    } else {
 7916        None
 7917    }
 7918}
 7919
 7920fn join_pane_into_active(
 7921    active_pane: &Entity<Pane>,
 7922    pane: &Entity<Pane>,
 7923    window: &mut Window,
 7924    cx: &mut App,
 7925) {
 7926    if pane == active_pane {
 7927        return;
 7928    } else if pane.read(cx).items_len() == 0 {
 7929        pane.update(cx, |_, cx| {
 7930            cx.emit(pane::Event::Remove {
 7931                focus_on_pane: None,
 7932            });
 7933        })
 7934    } else {
 7935        move_all_items(pane, active_pane, window, cx);
 7936    }
 7937}
 7938
 7939fn move_all_items(
 7940    from_pane: &Entity<Pane>,
 7941    to_pane: &Entity<Pane>,
 7942    window: &mut Window,
 7943    cx: &mut App,
 7944) {
 7945    let destination_is_different = from_pane != to_pane;
 7946    let mut moved_items = 0;
 7947    for (item_ix, item_handle) in from_pane
 7948        .read(cx)
 7949        .items()
 7950        .enumerate()
 7951        .map(|(ix, item)| (ix, item.clone()))
 7952        .collect::<Vec<_>>()
 7953    {
 7954        let ix = item_ix - moved_items;
 7955        if destination_is_different {
 7956            // Close item from previous pane
 7957            from_pane.update(cx, |source, cx| {
 7958                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7959            });
 7960            moved_items += 1;
 7961        }
 7962
 7963        // This automatically removes duplicate items in the pane
 7964        to_pane.update(cx, |destination, cx| {
 7965            destination.add_item(item_handle, true, true, None, window, cx);
 7966            window.focus(&destination.focus_handle(cx))
 7967        });
 7968    }
 7969}
 7970
 7971pub fn move_item(
 7972    source: &Entity<Pane>,
 7973    destination: &Entity<Pane>,
 7974    item_id_to_move: EntityId,
 7975    destination_index: usize,
 7976    activate: bool,
 7977    window: &mut Window,
 7978    cx: &mut App,
 7979) {
 7980    let Some((item_ix, item_handle)) = source
 7981        .read(cx)
 7982        .items()
 7983        .enumerate()
 7984        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7985        .map(|(ix, item)| (ix, item.clone()))
 7986    else {
 7987        // Tab was closed during drag
 7988        return;
 7989    };
 7990
 7991    if source != destination {
 7992        // Close item from previous pane
 7993        source.update(cx, |source, cx| {
 7994            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7995        });
 7996    }
 7997
 7998    // This automatically removes duplicate items in the pane
 7999    destination.update(cx, |destination, cx| {
 8000        destination.add_item_inner(
 8001            item_handle,
 8002            activate,
 8003            activate,
 8004            activate,
 8005            Some(destination_index),
 8006            window,
 8007            cx,
 8008        );
 8009        if activate {
 8010            window.focus(&destination.focus_handle(cx))
 8011        }
 8012    });
 8013}
 8014
 8015pub fn move_active_item(
 8016    source: &Entity<Pane>,
 8017    destination: &Entity<Pane>,
 8018    focus_destination: bool,
 8019    close_if_empty: bool,
 8020    window: &mut Window,
 8021    cx: &mut App,
 8022) {
 8023    if source == destination {
 8024        return;
 8025    }
 8026    let Some(active_item) = source.read(cx).active_item() else {
 8027        return;
 8028    };
 8029    source.update(cx, |source_pane, cx| {
 8030        let item_id = active_item.item_id();
 8031        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8032        destination.update(cx, |target_pane, cx| {
 8033            target_pane.add_item(
 8034                active_item,
 8035                focus_destination,
 8036                focus_destination,
 8037                Some(target_pane.items_len()),
 8038                window,
 8039                cx,
 8040            );
 8041        });
 8042    });
 8043}
 8044
 8045pub fn clone_active_item(
 8046    workspace_id: Option<WorkspaceId>,
 8047    source: &Entity<Pane>,
 8048    destination: &Entity<Pane>,
 8049    focus_destination: bool,
 8050    window: &mut Window,
 8051    cx: &mut App,
 8052) {
 8053    if source == destination {
 8054        return;
 8055    }
 8056    let Some(active_item) = source.read(cx).active_item() else {
 8057        return;
 8058    };
 8059    destination.update(cx, |target_pane, cx| {
 8060        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8061            return;
 8062        };
 8063        target_pane.add_item(
 8064            clone,
 8065            focus_destination,
 8066            focus_destination,
 8067            Some(target_pane.items_len()),
 8068            window,
 8069            cx,
 8070        );
 8071    });
 8072}
 8073
 8074#[derive(Debug)]
 8075pub struct WorkspacePosition {
 8076    pub window_bounds: Option<WindowBounds>,
 8077    pub display: Option<Uuid>,
 8078    pub centered_layout: bool,
 8079}
 8080
 8081pub fn ssh_workspace_position_from_db(
 8082    host: String,
 8083    port: Option<u16>,
 8084    user: Option<String>,
 8085    paths_to_open: &[PathBuf],
 8086    cx: &App,
 8087) -> Task<Result<WorkspacePosition>> {
 8088    let paths = paths_to_open
 8089        .iter()
 8090        .map(|path| path.to_string_lossy().to_string())
 8091        .collect::<Vec<_>>();
 8092
 8093    cx.background_spawn(async move {
 8094        let serialized_ssh_project = persistence::DB
 8095            .get_or_create_ssh_project(host, port, paths, user)
 8096            .await
 8097            .context("fetching serialized ssh project")?;
 8098        let serialized_workspace =
 8099            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8100
 8101        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8102            (Some(WindowBounds::Windowed(bounds)), None)
 8103        } else {
 8104            let restorable_bounds = serialized_workspace
 8105                .as_ref()
 8106                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8107                .or_else(|| {
 8108                    let (display, window_bounds) = DB.last_window().log_err()?;
 8109                    Some((display?, window_bounds?))
 8110                });
 8111
 8112            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8113                (Some(serialized_status.0), Some(serialized_display))
 8114            } else {
 8115                (None, None)
 8116            }
 8117        };
 8118
 8119        let centered_layout = serialized_workspace
 8120            .as_ref()
 8121            .map(|w| w.centered_layout)
 8122            .unwrap_or(false);
 8123
 8124        Ok(WorkspacePosition {
 8125            window_bounds,
 8126            display,
 8127            centered_layout,
 8128        })
 8129    })
 8130}
 8131
 8132pub fn with_active_or_new_workspace(
 8133    cx: &mut App,
 8134    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8135) {
 8136    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8137        Some(workspace) => {
 8138            cx.defer(move |cx| {
 8139                workspace
 8140                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8141                    .log_err();
 8142            });
 8143        }
 8144        None => {
 8145            let app_state = AppState::global(cx);
 8146            if let Some(app_state) = app_state.upgrade() {
 8147                open_new(
 8148                    OpenOptions::default(),
 8149                    app_state,
 8150                    cx,
 8151                    move |workspace, window, cx| f(workspace, window, cx),
 8152                )
 8153                .detach_and_log_err(cx);
 8154            }
 8155        }
 8156    }
 8157}
 8158
 8159#[cfg(test)]
 8160mod tests {
 8161    use std::{cell::RefCell, rc::Rc};
 8162
 8163    use super::*;
 8164    use crate::{
 8165        dock::{PanelEvent, test::TestPanel},
 8166        item::{
 8167            ItemEvent,
 8168            test::{TestItem, TestProjectItem},
 8169        },
 8170    };
 8171    use fs::FakeFs;
 8172    use gpui::{
 8173        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8174        UpdateGlobal, VisualTestContext, px,
 8175    };
 8176    use project::{Project, ProjectEntryId};
 8177    use serde_json::json;
 8178    use settings::SettingsStore;
 8179
 8180    #[gpui::test]
 8181    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8182        init_test(cx);
 8183
 8184        let fs = FakeFs::new(cx.executor());
 8185        let project = Project::test(fs, [], cx).await;
 8186        let (workspace, cx) =
 8187            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8188
 8189        // Adding an item with no ambiguity renders the tab without detail.
 8190        let item1 = cx.new(|cx| {
 8191            let mut item = TestItem::new(cx);
 8192            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8193            item
 8194        });
 8195        workspace.update_in(cx, |workspace, window, cx| {
 8196            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8197        });
 8198        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8199
 8200        // Adding an item that creates ambiguity increases the level of detail on
 8201        // both tabs.
 8202        let item2 = cx.new_window_entity(|_window, cx| {
 8203            let mut item = TestItem::new(cx);
 8204            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8205            item
 8206        });
 8207        workspace.update_in(cx, |workspace, window, cx| {
 8208            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8209        });
 8210        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8211        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8212
 8213        // Adding an item that creates ambiguity increases the level of detail only
 8214        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8215        // we stop at the highest detail available.
 8216        let item3 = cx.new(|cx| {
 8217            let mut item = TestItem::new(cx);
 8218            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8219            item
 8220        });
 8221        workspace.update_in(cx, |workspace, window, cx| {
 8222            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8223        });
 8224        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8225        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8226        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8227    }
 8228
 8229    #[gpui::test]
 8230    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8231        init_test(cx);
 8232
 8233        let fs = FakeFs::new(cx.executor());
 8234        fs.insert_tree(
 8235            "/root1",
 8236            json!({
 8237                "one.txt": "",
 8238                "two.txt": "",
 8239            }),
 8240        )
 8241        .await;
 8242        fs.insert_tree(
 8243            "/root2",
 8244            json!({
 8245                "three.txt": "",
 8246            }),
 8247        )
 8248        .await;
 8249
 8250        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8251        let (workspace, cx) =
 8252            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8253        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8254        let worktree_id = project.update(cx, |project, cx| {
 8255            project.worktrees(cx).next().unwrap().read(cx).id()
 8256        });
 8257
 8258        let item1 = cx.new(|cx| {
 8259            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8260        });
 8261        let item2 = cx.new(|cx| {
 8262            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8263        });
 8264
 8265        // Add an item to an empty pane
 8266        workspace.update_in(cx, |workspace, window, cx| {
 8267            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8268        });
 8269        project.update(cx, |project, cx| {
 8270            assert_eq!(
 8271                project.active_entry(),
 8272                project
 8273                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8274                    .map(|e| e.id)
 8275            );
 8276        });
 8277        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8278
 8279        // Add a second item to a non-empty pane
 8280        workspace.update_in(cx, |workspace, window, cx| {
 8281            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8282        });
 8283        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8284        project.update(cx, |project, cx| {
 8285            assert_eq!(
 8286                project.active_entry(),
 8287                project
 8288                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8289                    .map(|e| e.id)
 8290            );
 8291        });
 8292
 8293        // Close the active item
 8294        pane.update_in(cx, |pane, window, cx| {
 8295            pane.close_active_item(&Default::default(), window, cx)
 8296        })
 8297        .await
 8298        .unwrap();
 8299        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8300        project.update(cx, |project, cx| {
 8301            assert_eq!(
 8302                project.active_entry(),
 8303                project
 8304                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8305                    .map(|e| e.id)
 8306            );
 8307        });
 8308
 8309        // Add a project folder
 8310        project
 8311            .update(cx, |project, cx| {
 8312                project.find_or_create_worktree("root2", true, cx)
 8313            })
 8314            .await
 8315            .unwrap();
 8316        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8317
 8318        // Remove a project folder
 8319        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8320        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8321    }
 8322
 8323    #[gpui::test]
 8324    async fn test_close_window(cx: &mut TestAppContext) {
 8325        init_test(cx);
 8326
 8327        let fs = FakeFs::new(cx.executor());
 8328        fs.insert_tree("/root", json!({ "one": "" })).await;
 8329
 8330        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8331        let (workspace, cx) =
 8332            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8333
 8334        // When there are no dirty items, there's nothing to do.
 8335        let item1 = cx.new(TestItem::new);
 8336        workspace.update_in(cx, |w, window, cx| {
 8337            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8338        });
 8339        let task = workspace.update_in(cx, |w, window, cx| {
 8340            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8341        });
 8342        assert!(task.await.unwrap());
 8343
 8344        // When there are dirty untitled items, prompt to save each one. If the user
 8345        // cancels any prompt, then abort.
 8346        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8347        let item3 = cx.new(|cx| {
 8348            TestItem::new(cx)
 8349                .with_dirty(true)
 8350                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8351        });
 8352        workspace.update_in(cx, |w, window, cx| {
 8353            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8354            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8355        });
 8356        let task = workspace.update_in(cx, |w, window, cx| {
 8357            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8358        });
 8359        cx.executor().run_until_parked();
 8360        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8361        cx.executor().run_until_parked();
 8362        assert!(!cx.has_pending_prompt());
 8363        assert!(!task.await.unwrap());
 8364    }
 8365
 8366    #[gpui::test]
 8367    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8368        init_test(cx);
 8369
 8370        // Register TestItem as a serializable item
 8371        cx.update(|cx| {
 8372            register_serializable_item::<TestItem>(cx);
 8373        });
 8374
 8375        let fs = FakeFs::new(cx.executor());
 8376        fs.insert_tree("/root", json!({ "one": "" })).await;
 8377
 8378        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8379        let (workspace, cx) =
 8380            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8381
 8382        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8383        let item1 = cx.new(|cx| {
 8384            TestItem::new(cx)
 8385                .with_dirty(true)
 8386                .with_serialize(|| Some(Task::ready(Ok(()))))
 8387        });
 8388        let item2 = cx.new(|cx| {
 8389            TestItem::new(cx)
 8390                .with_dirty(true)
 8391                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8392                .with_serialize(|| Some(Task::ready(Ok(()))))
 8393        });
 8394        workspace.update_in(cx, |w, window, cx| {
 8395            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8396            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8397        });
 8398        let task = workspace.update_in(cx, |w, window, cx| {
 8399            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8400        });
 8401        assert!(task.await.unwrap());
 8402    }
 8403
 8404    #[gpui::test]
 8405    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8406        init_test(cx);
 8407
 8408        let fs = FakeFs::new(cx.executor());
 8409
 8410        let project = Project::test(fs, None, cx).await;
 8411        let (workspace, cx) =
 8412            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8413
 8414        let item1 = cx.new(|cx| {
 8415            TestItem::new(cx)
 8416                .with_dirty(true)
 8417                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8418        });
 8419        let item2 = cx.new(|cx| {
 8420            TestItem::new(cx)
 8421                .with_dirty(true)
 8422                .with_conflict(true)
 8423                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8424        });
 8425        let item3 = cx.new(|cx| {
 8426            TestItem::new(cx)
 8427                .with_dirty(true)
 8428                .with_conflict(true)
 8429                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8430        });
 8431        let item4 = cx.new(|cx| {
 8432            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8433                let project_item = TestProjectItem::new_untitled(cx);
 8434                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8435                project_item
 8436            }])
 8437        });
 8438        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8439            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8440            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8441            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8442            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8443            workspace.active_pane().clone()
 8444        });
 8445
 8446        let close_items = pane.update_in(cx, |pane, window, cx| {
 8447            pane.activate_item(1, true, true, window, cx);
 8448            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8449            let item1_id = item1.item_id();
 8450            let item3_id = item3.item_id();
 8451            let item4_id = item4.item_id();
 8452            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8453                [item1_id, item3_id, item4_id].contains(&id)
 8454            })
 8455        });
 8456        cx.executor().run_until_parked();
 8457
 8458        assert!(cx.has_pending_prompt());
 8459        cx.simulate_prompt_answer("Save all");
 8460
 8461        cx.executor().run_until_parked();
 8462
 8463        // Item 1 is saved. There's a prompt to save item 3.
 8464        pane.update(cx, |pane, cx| {
 8465            assert_eq!(item1.read(cx).save_count, 1);
 8466            assert_eq!(item1.read(cx).save_as_count, 0);
 8467            assert_eq!(item1.read(cx).reload_count, 0);
 8468            assert_eq!(pane.items_len(), 3);
 8469            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8470        });
 8471        assert!(cx.has_pending_prompt());
 8472
 8473        // Cancel saving item 3.
 8474        cx.simulate_prompt_answer("Discard");
 8475        cx.executor().run_until_parked();
 8476
 8477        // Item 3 is reloaded. There's a prompt to save item 4.
 8478        pane.update(cx, |pane, cx| {
 8479            assert_eq!(item3.read(cx).save_count, 0);
 8480            assert_eq!(item3.read(cx).save_as_count, 0);
 8481            assert_eq!(item3.read(cx).reload_count, 1);
 8482            assert_eq!(pane.items_len(), 2);
 8483            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8484        });
 8485
 8486        // There's a prompt for a path for item 4.
 8487        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8488        close_items.await.unwrap();
 8489
 8490        // The requested items are closed.
 8491        pane.update(cx, |pane, cx| {
 8492            assert_eq!(item4.read(cx).save_count, 0);
 8493            assert_eq!(item4.read(cx).save_as_count, 1);
 8494            assert_eq!(item4.read(cx).reload_count, 0);
 8495            assert_eq!(pane.items_len(), 1);
 8496            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8497        });
 8498    }
 8499
 8500    #[gpui::test]
 8501    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8502        init_test(cx);
 8503
 8504        let fs = FakeFs::new(cx.executor());
 8505        let project = Project::test(fs, [], cx).await;
 8506        let (workspace, cx) =
 8507            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8508
 8509        // Create several workspace items with single project entries, and two
 8510        // workspace items with multiple project entries.
 8511        let single_entry_items = (0..=4)
 8512            .map(|project_entry_id| {
 8513                cx.new(|cx| {
 8514                    TestItem::new(cx)
 8515                        .with_dirty(true)
 8516                        .with_project_items(&[dirty_project_item(
 8517                            project_entry_id,
 8518                            &format!("{project_entry_id}.txt"),
 8519                            cx,
 8520                        )])
 8521                })
 8522            })
 8523            .collect::<Vec<_>>();
 8524        let item_2_3 = cx.new(|cx| {
 8525            TestItem::new(cx)
 8526                .with_dirty(true)
 8527                .with_singleton(false)
 8528                .with_project_items(&[
 8529                    single_entry_items[2].read(cx).project_items[0].clone(),
 8530                    single_entry_items[3].read(cx).project_items[0].clone(),
 8531                ])
 8532        });
 8533        let item_3_4 = cx.new(|cx| {
 8534            TestItem::new(cx)
 8535                .with_dirty(true)
 8536                .with_singleton(false)
 8537                .with_project_items(&[
 8538                    single_entry_items[3].read(cx).project_items[0].clone(),
 8539                    single_entry_items[4].read(cx).project_items[0].clone(),
 8540                ])
 8541        });
 8542
 8543        // Create two panes that contain the following project entries:
 8544        //   left pane:
 8545        //     multi-entry items:   (2, 3)
 8546        //     single-entry items:  0, 2, 3, 4
 8547        //   right pane:
 8548        //     single-entry items:  4, 1
 8549        //     multi-entry items:   (3, 4)
 8550        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8551            let left_pane = workspace.active_pane().clone();
 8552            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8553            workspace.add_item_to_active_pane(
 8554                single_entry_items[0].boxed_clone(),
 8555                None,
 8556                true,
 8557                window,
 8558                cx,
 8559            );
 8560            workspace.add_item_to_active_pane(
 8561                single_entry_items[2].boxed_clone(),
 8562                None,
 8563                true,
 8564                window,
 8565                cx,
 8566            );
 8567            workspace.add_item_to_active_pane(
 8568                single_entry_items[3].boxed_clone(),
 8569                None,
 8570                true,
 8571                window,
 8572                cx,
 8573            );
 8574            workspace.add_item_to_active_pane(
 8575                single_entry_items[4].boxed_clone(),
 8576                None,
 8577                true,
 8578                window,
 8579                cx,
 8580            );
 8581
 8582            let right_pane = workspace
 8583                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8584                .unwrap();
 8585
 8586            right_pane.update(cx, |pane, cx| {
 8587                pane.add_item(
 8588                    single_entry_items[1].boxed_clone(),
 8589                    true,
 8590                    true,
 8591                    None,
 8592                    window,
 8593                    cx,
 8594                );
 8595                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8596            });
 8597
 8598            (left_pane, right_pane)
 8599        });
 8600
 8601        cx.focus(&right_pane);
 8602
 8603        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8604            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8605                .unwrap()
 8606        });
 8607        cx.executor().run_until_parked();
 8608
 8609        let msg = cx.pending_prompt().unwrap().0;
 8610        assert!(msg.contains("1.txt"));
 8611        assert!(!msg.contains("2.txt"));
 8612        assert!(!msg.contains("3.txt"));
 8613        assert!(!msg.contains("4.txt"));
 8614
 8615        cx.simulate_prompt_answer("Cancel");
 8616        close.await;
 8617
 8618        left_pane
 8619            .update_in(cx, |left_pane, window, cx| {
 8620                left_pane.close_item_by_id(
 8621                    single_entry_items[3].entity_id(),
 8622                    SaveIntent::Skip,
 8623                    window,
 8624                    cx,
 8625                )
 8626            })
 8627            .await
 8628            .unwrap();
 8629
 8630        close = right_pane.update_in(cx, |pane, window, cx| {
 8631            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8632                .unwrap()
 8633        });
 8634        cx.executor().run_until_parked();
 8635
 8636        let details = cx.pending_prompt().unwrap().1;
 8637        assert!(details.contains("1.txt"));
 8638        assert!(!details.contains("2.txt"));
 8639        assert!(details.contains("3.txt"));
 8640        // ideally this assertion could be made, but today we can only
 8641        // save whole items not project items, so the orphaned item 3 causes
 8642        // 4 to be saved too.
 8643        // assert!(!details.contains("4.txt"));
 8644
 8645        cx.simulate_prompt_answer("Save all");
 8646
 8647        cx.executor().run_until_parked();
 8648        close.await;
 8649        right_pane.read_with(cx, |pane, _| {
 8650            assert_eq!(pane.items_len(), 0);
 8651        });
 8652    }
 8653
 8654    #[gpui::test]
 8655    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8656        init_test(cx);
 8657
 8658        let fs = FakeFs::new(cx.executor());
 8659        let project = Project::test(fs, [], cx).await;
 8660        let (workspace, cx) =
 8661            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8662        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8663
 8664        let item = cx.new(|cx| {
 8665            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8666        });
 8667        let item_id = item.entity_id();
 8668        workspace.update_in(cx, |workspace, window, cx| {
 8669            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8670        });
 8671
 8672        // Autosave on window change.
 8673        item.update(cx, |item, cx| {
 8674            SettingsStore::update_global(cx, |settings, cx| {
 8675                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8676                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8677                })
 8678            });
 8679            item.is_dirty = true;
 8680        });
 8681
 8682        // Deactivating the window saves the file.
 8683        cx.deactivate_window();
 8684        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8685
 8686        // Re-activating the window doesn't save the file.
 8687        cx.update(|window, _| window.activate_window());
 8688        cx.executor().run_until_parked();
 8689        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8690
 8691        // Autosave on focus change.
 8692        item.update_in(cx, |item, window, cx| {
 8693            cx.focus_self(window);
 8694            SettingsStore::update_global(cx, |settings, cx| {
 8695                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8696                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8697                })
 8698            });
 8699            item.is_dirty = true;
 8700        });
 8701
 8702        // Blurring the item saves the file.
 8703        item.update_in(cx, |_, window, _| window.blur());
 8704        cx.executor().run_until_parked();
 8705        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8706
 8707        // Deactivating the window still saves the file.
 8708        item.update_in(cx, |item, window, cx| {
 8709            cx.focus_self(window);
 8710            item.is_dirty = true;
 8711        });
 8712        cx.deactivate_window();
 8713        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8714
 8715        // Autosave after delay.
 8716        item.update(cx, |item, cx| {
 8717            SettingsStore::update_global(cx, |settings, cx| {
 8718                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8719                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8720                })
 8721            });
 8722            item.is_dirty = true;
 8723            cx.emit(ItemEvent::Edit);
 8724        });
 8725
 8726        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8727        cx.executor().advance_clock(Duration::from_millis(250));
 8728        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8729
 8730        // After delay expires, the file is saved.
 8731        cx.executor().advance_clock(Duration::from_millis(250));
 8732        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8733
 8734        // Autosave on focus change, ensuring closing the tab counts as such.
 8735        item.update(cx, |item, cx| {
 8736            SettingsStore::update_global(cx, |settings, cx| {
 8737                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8738                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8739                })
 8740            });
 8741            item.is_dirty = true;
 8742            for project_item in &mut item.project_items {
 8743                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8744            }
 8745        });
 8746
 8747        pane.update_in(cx, |pane, window, cx| {
 8748            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8749        })
 8750        .await
 8751        .unwrap();
 8752        assert!(!cx.has_pending_prompt());
 8753        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8754
 8755        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8756        workspace.update_in(cx, |workspace, window, cx| {
 8757            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8758        });
 8759        item.update_in(cx, |item, window, cx| {
 8760            item.project_items[0].update(cx, |item, _| {
 8761                item.entry_id = None;
 8762            });
 8763            item.is_dirty = true;
 8764            window.blur();
 8765        });
 8766        cx.run_until_parked();
 8767        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8768
 8769        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8770        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8771            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8772        });
 8773        cx.run_until_parked();
 8774        assert!(cx.has_pending_prompt());
 8775        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8776    }
 8777
 8778    #[gpui::test]
 8779    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8780        init_test(cx);
 8781
 8782        let fs = FakeFs::new(cx.executor());
 8783
 8784        let project = Project::test(fs, [], cx).await;
 8785        let (workspace, cx) =
 8786            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8787
 8788        let item = cx.new(|cx| {
 8789            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8790        });
 8791        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8792        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8793        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8794
 8795        workspace.update_in(cx, |workspace, window, cx| {
 8796            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8797            let toolbar_notification_count = toolbar_notify_count.clone();
 8798            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8799                *toolbar_notification_count.borrow_mut() += 1
 8800            })
 8801            .detach();
 8802        });
 8803
 8804        pane.read_with(cx, |pane, _| {
 8805            assert!(!pane.can_navigate_backward());
 8806            assert!(!pane.can_navigate_forward());
 8807        });
 8808
 8809        item.update_in(cx, |item, _, cx| {
 8810            item.set_state("one".to_string(), cx);
 8811        });
 8812
 8813        // Toolbar must be notified to re-render the navigation buttons
 8814        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8815
 8816        pane.read_with(cx, |pane, _| {
 8817            assert!(pane.can_navigate_backward());
 8818            assert!(!pane.can_navigate_forward());
 8819        });
 8820
 8821        workspace
 8822            .update_in(cx, |workspace, window, cx| {
 8823                workspace.go_back(pane.downgrade(), window, cx)
 8824            })
 8825            .await
 8826            .unwrap();
 8827
 8828        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8829        pane.read_with(cx, |pane, _| {
 8830            assert!(!pane.can_navigate_backward());
 8831            assert!(pane.can_navigate_forward());
 8832        });
 8833    }
 8834
 8835    #[gpui::test]
 8836    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8837        init_test(cx);
 8838        let fs = FakeFs::new(cx.executor());
 8839
 8840        let project = Project::test(fs, [], cx).await;
 8841        let (workspace, cx) =
 8842            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8843
 8844        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8845            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8846            workspace.add_panel(panel.clone(), window, cx);
 8847
 8848            workspace
 8849                .right_dock()
 8850                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8851
 8852            panel
 8853        });
 8854
 8855        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8856        pane.update_in(cx, |pane, window, cx| {
 8857            let item = cx.new(TestItem::new);
 8858            pane.add_item(Box::new(item), true, true, None, window, cx);
 8859        });
 8860
 8861        // Transfer focus from center to panel
 8862        workspace.update_in(cx, |workspace, window, cx| {
 8863            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8864        });
 8865
 8866        workspace.update_in(cx, |workspace, window, cx| {
 8867            assert!(workspace.right_dock().read(cx).is_open());
 8868            assert!(!panel.is_zoomed(window, cx));
 8869            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8870        });
 8871
 8872        // Transfer focus from panel to center
 8873        workspace.update_in(cx, |workspace, window, cx| {
 8874            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8875        });
 8876
 8877        workspace.update_in(cx, |workspace, window, cx| {
 8878            assert!(workspace.right_dock().read(cx).is_open());
 8879            assert!(!panel.is_zoomed(window, cx));
 8880            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8881        });
 8882
 8883        // Close the dock
 8884        workspace.update_in(cx, |workspace, window, cx| {
 8885            workspace.toggle_dock(DockPosition::Right, window, cx);
 8886        });
 8887
 8888        workspace.update_in(cx, |workspace, window, cx| {
 8889            assert!(!workspace.right_dock().read(cx).is_open());
 8890            assert!(!panel.is_zoomed(window, cx));
 8891            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8892        });
 8893
 8894        // Open the dock
 8895        workspace.update_in(cx, |workspace, window, cx| {
 8896            workspace.toggle_dock(DockPosition::Right, window, cx);
 8897        });
 8898
 8899        workspace.update_in(cx, |workspace, window, cx| {
 8900            assert!(workspace.right_dock().read(cx).is_open());
 8901            assert!(!panel.is_zoomed(window, cx));
 8902            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8903        });
 8904
 8905        // Focus and zoom panel
 8906        panel.update_in(cx, |panel, window, cx| {
 8907            cx.focus_self(window);
 8908            panel.set_zoomed(true, window, cx)
 8909        });
 8910
 8911        workspace.update_in(cx, |workspace, window, cx| {
 8912            assert!(workspace.right_dock().read(cx).is_open());
 8913            assert!(panel.is_zoomed(window, cx));
 8914            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8915        });
 8916
 8917        // Transfer focus to the center closes the dock
 8918        workspace.update_in(cx, |workspace, window, cx| {
 8919            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8920        });
 8921
 8922        workspace.update_in(cx, |workspace, window, cx| {
 8923            assert!(!workspace.right_dock().read(cx).is_open());
 8924            assert!(panel.is_zoomed(window, cx));
 8925            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8926        });
 8927
 8928        // Transferring focus back to the panel keeps it zoomed
 8929        workspace.update_in(cx, |workspace, window, cx| {
 8930            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8931        });
 8932
 8933        workspace.update_in(cx, |workspace, window, cx| {
 8934            assert!(workspace.right_dock().read(cx).is_open());
 8935            assert!(panel.is_zoomed(window, cx));
 8936            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8937        });
 8938
 8939        // Close the dock while it is zoomed
 8940        workspace.update_in(cx, |workspace, window, cx| {
 8941            workspace.toggle_dock(DockPosition::Right, window, cx)
 8942        });
 8943
 8944        workspace.update_in(cx, |workspace, window, cx| {
 8945            assert!(!workspace.right_dock().read(cx).is_open());
 8946            assert!(panel.is_zoomed(window, cx));
 8947            assert!(workspace.zoomed.is_none());
 8948            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8949        });
 8950
 8951        // Opening the dock, when it's zoomed, retains focus
 8952        workspace.update_in(cx, |workspace, window, cx| {
 8953            workspace.toggle_dock(DockPosition::Right, window, cx)
 8954        });
 8955
 8956        workspace.update_in(cx, |workspace, window, cx| {
 8957            assert!(workspace.right_dock().read(cx).is_open());
 8958            assert!(panel.is_zoomed(window, cx));
 8959            assert!(workspace.zoomed.is_some());
 8960            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8961        });
 8962
 8963        // Unzoom and close the panel, zoom the active pane.
 8964        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8965        workspace.update_in(cx, |workspace, window, cx| {
 8966            workspace.toggle_dock(DockPosition::Right, window, cx)
 8967        });
 8968        pane.update_in(cx, |pane, window, cx| {
 8969            pane.toggle_zoom(&Default::default(), window, cx)
 8970        });
 8971
 8972        // Opening a dock unzooms the pane.
 8973        workspace.update_in(cx, |workspace, window, cx| {
 8974            workspace.toggle_dock(DockPosition::Right, window, cx)
 8975        });
 8976        workspace.update_in(cx, |workspace, window, cx| {
 8977            let pane = pane.read(cx);
 8978            assert!(!pane.is_zoomed());
 8979            assert!(!pane.focus_handle(cx).is_focused(window));
 8980            assert!(workspace.right_dock().read(cx).is_open());
 8981            assert!(workspace.zoomed.is_none());
 8982        });
 8983    }
 8984
 8985    #[gpui::test]
 8986    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8987        init_test(cx);
 8988
 8989        let fs = FakeFs::new(cx.executor());
 8990
 8991        let project = Project::test(fs, None, cx).await;
 8992        let (workspace, cx) =
 8993            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8994
 8995        // Let's arrange the panes like this:
 8996        //
 8997        // +-----------------------+
 8998        // |         top           |
 8999        // +------+--------+-------+
 9000        // | left | center | right |
 9001        // +------+--------+-------+
 9002        // |        bottom         |
 9003        // +-----------------------+
 9004
 9005        let top_item = cx.new(|cx| {
 9006            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9007        });
 9008        let bottom_item = cx.new(|cx| {
 9009            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9010        });
 9011        let left_item = cx.new(|cx| {
 9012            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9013        });
 9014        let right_item = cx.new(|cx| {
 9015            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9016        });
 9017        let center_item = cx.new(|cx| {
 9018            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9019        });
 9020
 9021        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9022            let top_pane_id = workspace.active_pane().entity_id();
 9023            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9024            workspace.split_pane(
 9025                workspace.active_pane().clone(),
 9026                SplitDirection::Down,
 9027                window,
 9028                cx,
 9029            );
 9030            top_pane_id
 9031        });
 9032        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9033            let bottom_pane_id = workspace.active_pane().entity_id();
 9034            workspace.add_item_to_active_pane(
 9035                Box::new(bottom_item.clone()),
 9036                None,
 9037                false,
 9038                window,
 9039                cx,
 9040            );
 9041            workspace.split_pane(
 9042                workspace.active_pane().clone(),
 9043                SplitDirection::Up,
 9044                window,
 9045                cx,
 9046            );
 9047            bottom_pane_id
 9048        });
 9049        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9050            let left_pane_id = workspace.active_pane().entity_id();
 9051            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9052            workspace.split_pane(
 9053                workspace.active_pane().clone(),
 9054                SplitDirection::Right,
 9055                window,
 9056                cx,
 9057            );
 9058            left_pane_id
 9059        });
 9060        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9061            let right_pane_id = workspace.active_pane().entity_id();
 9062            workspace.add_item_to_active_pane(
 9063                Box::new(right_item.clone()),
 9064                None,
 9065                false,
 9066                window,
 9067                cx,
 9068            );
 9069            workspace.split_pane(
 9070                workspace.active_pane().clone(),
 9071                SplitDirection::Left,
 9072                window,
 9073                cx,
 9074            );
 9075            right_pane_id
 9076        });
 9077        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9078            let center_pane_id = workspace.active_pane().entity_id();
 9079            workspace.add_item_to_active_pane(
 9080                Box::new(center_item.clone()),
 9081                None,
 9082                false,
 9083                window,
 9084                cx,
 9085            );
 9086            center_pane_id
 9087        });
 9088        cx.executor().run_until_parked();
 9089
 9090        workspace.update_in(cx, |workspace, window, cx| {
 9091            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9092
 9093            // Join into next from center pane into right
 9094            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9095        });
 9096
 9097        workspace.update_in(cx, |workspace, window, cx| {
 9098            let active_pane = workspace.active_pane();
 9099            assert_eq!(right_pane_id, active_pane.entity_id());
 9100            assert_eq!(2, active_pane.read(cx).items_len());
 9101            let item_ids_in_pane =
 9102                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9103            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9104            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9105
 9106            // Join into next from right pane into bottom
 9107            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9108        });
 9109
 9110        workspace.update_in(cx, |workspace, window, cx| {
 9111            let active_pane = workspace.active_pane();
 9112            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9113            assert_eq!(3, active_pane.read(cx).items_len());
 9114            let item_ids_in_pane =
 9115                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9116            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9117            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9118            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9119
 9120            // Join into next from bottom pane into left
 9121            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9122        });
 9123
 9124        workspace.update_in(cx, |workspace, window, cx| {
 9125            let active_pane = workspace.active_pane();
 9126            assert_eq!(left_pane_id, active_pane.entity_id());
 9127            assert_eq!(4, active_pane.read(cx).items_len());
 9128            let item_ids_in_pane =
 9129                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9130            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9131            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9132            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9133            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9134
 9135            // Join into next from left pane into top
 9136            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9137        });
 9138
 9139        workspace.update_in(cx, |workspace, window, cx| {
 9140            let active_pane = workspace.active_pane();
 9141            assert_eq!(top_pane_id, active_pane.entity_id());
 9142            assert_eq!(5, active_pane.read(cx).items_len());
 9143            let item_ids_in_pane =
 9144                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9145            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9146            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9147            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9148            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9149            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9150
 9151            // Single pane left: no-op
 9152            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9153        });
 9154
 9155        workspace.update(cx, |workspace, _cx| {
 9156            let active_pane = workspace.active_pane();
 9157            assert_eq!(top_pane_id, active_pane.entity_id());
 9158        });
 9159    }
 9160
 9161    fn add_an_item_to_active_pane(
 9162        cx: &mut VisualTestContext,
 9163        workspace: &Entity<Workspace>,
 9164        item_id: u64,
 9165    ) -> Entity<TestItem> {
 9166        let item = cx.new(|cx| {
 9167            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9168                item_id,
 9169                "item{item_id}.txt",
 9170                cx,
 9171            )])
 9172        });
 9173        workspace.update_in(cx, |workspace, window, cx| {
 9174            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9175        });
 9176        return item;
 9177    }
 9178
 9179    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9180        return workspace.update_in(cx, |workspace, window, cx| {
 9181            let new_pane = workspace.split_pane(
 9182                workspace.active_pane().clone(),
 9183                SplitDirection::Right,
 9184                window,
 9185                cx,
 9186            );
 9187            new_pane
 9188        });
 9189    }
 9190
 9191    #[gpui::test]
 9192    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9193        init_test(cx);
 9194        let fs = FakeFs::new(cx.executor());
 9195        let project = Project::test(fs, None, cx).await;
 9196        let (workspace, cx) =
 9197            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9198
 9199        add_an_item_to_active_pane(cx, &workspace, 1);
 9200        split_pane(cx, &workspace);
 9201        add_an_item_to_active_pane(cx, &workspace, 2);
 9202        split_pane(cx, &workspace); // empty pane
 9203        split_pane(cx, &workspace);
 9204        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9205
 9206        cx.executor().run_until_parked();
 9207
 9208        workspace.update(cx, |workspace, cx| {
 9209            let num_panes = workspace.panes().len();
 9210            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9211            let active_item = workspace
 9212                .active_pane()
 9213                .read(cx)
 9214                .active_item()
 9215                .expect("item is in focus");
 9216
 9217            assert_eq!(num_panes, 4);
 9218            assert_eq!(num_items_in_current_pane, 1);
 9219            assert_eq!(active_item.item_id(), last_item.item_id());
 9220        });
 9221
 9222        workspace.update_in(cx, |workspace, window, cx| {
 9223            workspace.join_all_panes(window, cx);
 9224        });
 9225
 9226        workspace.update(cx, |workspace, cx| {
 9227            let num_panes = workspace.panes().len();
 9228            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9229            let active_item = workspace
 9230                .active_pane()
 9231                .read(cx)
 9232                .active_item()
 9233                .expect("item is in focus");
 9234
 9235            assert_eq!(num_panes, 1);
 9236            assert_eq!(num_items_in_current_pane, 3);
 9237            assert_eq!(active_item.item_id(), last_item.item_id());
 9238        });
 9239    }
 9240    struct TestModal(FocusHandle);
 9241
 9242    impl TestModal {
 9243        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9244            Self(cx.focus_handle())
 9245        }
 9246    }
 9247
 9248    impl EventEmitter<DismissEvent> for TestModal {}
 9249
 9250    impl Focusable for TestModal {
 9251        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9252            self.0.clone()
 9253        }
 9254    }
 9255
 9256    impl ModalView for TestModal {}
 9257
 9258    impl Render for TestModal {
 9259        fn render(
 9260            &mut self,
 9261            _window: &mut Window,
 9262            _cx: &mut Context<TestModal>,
 9263        ) -> impl IntoElement {
 9264            div().track_focus(&self.0)
 9265        }
 9266    }
 9267
 9268    #[gpui::test]
 9269    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9270        init_test(cx);
 9271        let fs = FakeFs::new(cx.executor());
 9272
 9273        let project = Project::test(fs, [], cx).await;
 9274        let (workspace, cx) =
 9275            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9276
 9277        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9278            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9279            workspace.add_panel(panel_1.clone(), window, cx);
 9280            workspace.toggle_dock(DockPosition::Left, window, cx);
 9281            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9282            workspace.add_panel(panel_2.clone(), window, cx);
 9283            workspace.toggle_dock(DockPosition::Right, window, cx);
 9284
 9285            let left_dock = workspace.left_dock();
 9286            assert_eq!(
 9287                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9288                panel_1.panel_id()
 9289            );
 9290            assert_eq!(
 9291                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9292                panel_1.size(window, cx)
 9293            );
 9294
 9295            left_dock.update(cx, |left_dock, cx| {
 9296                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9297            });
 9298            assert_eq!(
 9299                workspace
 9300                    .right_dock()
 9301                    .read(cx)
 9302                    .visible_panel()
 9303                    .unwrap()
 9304                    .panel_id(),
 9305                panel_2.panel_id(),
 9306            );
 9307
 9308            (panel_1, panel_2)
 9309        });
 9310
 9311        // Move panel_1 to the right
 9312        panel_1.update_in(cx, |panel_1, window, cx| {
 9313            panel_1.set_position(DockPosition::Right, window, cx)
 9314        });
 9315
 9316        workspace.update_in(cx, |workspace, window, cx| {
 9317            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9318            // Since it was the only panel on the left, the left dock should now be closed.
 9319            assert!(!workspace.left_dock().read(cx).is_open());
 9320            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9321            let right_dock = workspace.right_dock();
 9322            assert_eq!(
 9323                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9324                panel_1.panel_id()
 9325            );
 9326            assert_eq!(
 9327                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9328                px(1337.)
 9329            );
 9330
 9331            // Now we move panel_2 to the left
 9332            panel_2.set_position(DockPosition::Left, window, cx);
 9333        });
 9334
 9335        workspace.update(cx, |workspace, cx| {
 9336            // Since panel_2 was not visible on the right, we don't open the left dock.
 9337            assert!(!workspace.left_dock().read(cx).is_open());
 9338            // And the right dock is unaffected in its displaying of panel_1
 9339            assert!(workspace.right_dock().read(cx).is_open());
 9340            assert_eq!(
 9341                workspace
 9342                    .right_dock()
 9343                    .read(cx)
 9344                    .visible_panel()
 9345                    .unwrap()
 9346                    .panel_id(),
 9347                panel_1.panel_id(),
 9348            );
 9349        });
 9350
 9351        // Move panel_1 back to the left
 9352        panel_1.update_in(cx, |panel_1, window, cx| {
 9353            panel_1.set_position(DockPosition::Left, window, cx)
 9354        });
 9355
 9356        workspace.update_in(cx, |workspace, window, cx| {
 9357            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9358            let left_dock = workspace.left_dock();
 9359            assert!(left_dock.read(cx).is_open());
 9360            assert_eq!(
 9361                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9362                panel_1.panel_id()
 9363            );
 9364            assert_eq!(
 9365                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9366                px(1337.)
 9367            );
 9368            // And the right dock should be closed as it no longer has any panels.
 9369            assert!(!workspace.right_dock().read(cx).is_open());
 9370
 9371            // Now we move panel_1 to the bottom
 9372            panel_1.set_position(DockPosition::Bottom, window, cx);
 9373        });
 9374
 9375        workspace.update_in(cx, |workspace, window, cx| {
 9376            // Since panel_1 was visible on the left, we close the left dock.
 9377            assert!(!workspace.left_dock().read(cx).is_open());
 9378            // The bottom dock is sized based on the panel's default size,
 9379            // since the panel orientation changed from vertical to horizontal.
 9380            let bottom_dock = workspace.bottom_dock();
 9381            assert_eq!(
 9382                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9383                panel_1.size(window, cx),
 9384            );
 9385            // Close bottom dock and move panel_1 back to the left.
 9386            bottom_dock.update(cx, |bottom_dock, cx| {
 9387                bottom_dock.set_open(false, window, cx)
 9388            });
 9389            panel_1.set_position(DockPosition::Left, window, cx);
 9390        });
 9391
 9392        // Emit activated event on panel 1
 9393        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9394
 9395        // Now the left dock is open and panel_1 is active and focused.
 9396        workspace.update_in(cx, |workspace, window, cx| {
 9397            let left_dock = workspace.left_dock();
 9398            assert!(left_dock.read(cx).is_open());
 9399            assert_eq!(
 9400                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9401                panel_1.panel_id(),
 9402            );
 9403            assert!(panel_1.focus_handle(cx).is_focused(window));
 9404        });
 9405
 9406        // Emit closed event on panel 2, which is not active
 9407        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9408
 9409        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9410        workspace.update(cx, |workspace, cx| {
 9411            let left_dock = workspace.left_dock();
 9412            assert!(left_dock.read(cx).is_open());
 9413            assert_eq!(
 9414                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9415                panel_1.panel_id(),
 9416            );
 9417        });
 9418
 9419        // Emitting a ZoomIn event shows the panel as zoomed.
 9420        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9421        workspace.read_with(cx, |workspace, _| {
 9422            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9423            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9424        });
 9425
 9426        // Move panel to another dock while it is zoomed
 9427        panel_1.update_in(cx, |panel, window, cx| {
 9428            panel.set_position(DockPosition::Right, window, cx)
 9429        });
 9430        workspace.read_with(cx, |workspace, _| {
 9431            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9432
 9433            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9434        });
 9435
 9436        // This is a helper for getting a:
 9437        // - valid focus on an element,
 9438        // - that isn't a part of the panes and panels system of the Workspace,
 9439        // - and doesn't trigger the 'on_focus_lost' API.
 9440        let focus_other_view = {
 9441            let workspace = workspace.clone();
 9442            move |cx: &mut VisualTestContext| {
 9443                workspace.update_in(cx, |workspace, window, cx| {
 9444                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
 9445                        workspace.toggle_modal(window, cx, TestModal::new);
 9446                        workspace.toggle_modal(window, cx, TestModal::new);
 9447                    } else {
 9448                        workspace.toggle_modal(window, cx, TestModal::new);
 9449                    }
 9450                })
 9451            }
 9452        };
 9453
 9454        // If focus is transferred to another view that's not a panel or another pane, we still show
 9455        // the panel as zoomed.
 9456        focus_other_view(cx);
 9457        workspace.read_with(cx, |workspace, _| {
 9458            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9459            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9460        });
 9461
 9462        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9463        workspace.update_in(cx, |_workspace, window, cx| {
 9464            cx.focus_self(window);
 9465        });
 9466        workspace.read_with(cx, |workspace, _| {
 9467            assert_eq!(workspace.zoomed, None);
 9468            assert_eq!(workspace.zoomed_position, None);
 9469        });
 9470
 9471        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9472        // show the panel as zoomed because it wasn't zoomed before.
 9473        focus_other_view(cx);
 9474        workspace.read_with(cx, |workspace, _| {
 9475            assert_eq!(workspace.zoomed, None);
 9476            assert_eq!(workspace.zoomed_position, None);
 9477        });
 9478
 9479        // When the panel is activated, it is zoomed again.
 9480        cx.dispatch_action(ToggleRightDock);
 9481        workspace.read_with(cx, |workspace, _| {
 9482            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9483            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9484        });
 9485
 9486        // Emitting a ZoomOut event unzooms the panel.
 9487        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9488        workspace.read_with(cx, |workspace, _| {
 9489            assert_eq!(workspace.zoomed, None);
 9490            assert_eq!(workspace.zoomed_position, None);
 9491        });
 9492
 9493        // Emit closed event on panel 1, which is active
 9494        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9495
 9496        // Now the left dock is closed, because panel_1 was the active panel
 9497        workspace.update(cx, |workspace, cx| {
 9498            let right_dock = workspace.right_dock();
 9499            assert!(!right_dock.read(cx).is_open());
 9500        });
 9501    }
 9502
 9503    #[gpui::test]
 9504    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9505        init_test(cx);
 9506
 9507        let fs = FakeFs::new(cx.background_executor.clone());
 9508        let project = Project::test(fs, [], cx).await;
 9509        let (workspace, cx) =
 9510            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9511        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9512
 9513        let dirty_regular_buffer = cx.new(|cx| {
 9514            TestItem::new(cx)
 9515                .with_dirty(true)
 9516                .with_label("1.txt")
 9517                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9518        });
 9519        let dirty_regular_buffer_2 = cx.new(|cx| {
 9520            TestItem::new(cx)
 9521                .with_dirty(true)
 9522                .with_label("2.txt")
 9523                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9524        });
 9525        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9526            TestItem::new(cx)
 9527                .with_dirty(true)
 9528                .with_singleton(false)
 9529                .with_label("Fake Project Search")
 9530                .with_project_items(&[
 9531                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9532                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9533                ])
 9534        });
 9535        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9536        workspace.update_in(cx, |workspace, window, cx| {
 9537            workspace.add_item(
 9538                pane.clone(),
 9539                Box::new(dirty_regular_buffer.clone()),
 9540                None,
 9541                false,
 9542                false,
 9543                window,
 9544                cx,
 9545            );
 9546            workspace.add_item(
 9547                pane.clone(),
 9548                Box::new(dirty_regular_buffer_2.clone()),
 9549                None,
 9550                false,
 9551                false,
 9552                window,
 9553                cx,
 9554            );
 9555            workspace.add_item(
 9556                pane.clone(),
 9557                Box::new(dirty_multi_buffer_with_both.clone()),
 9558                None,
 9559                false,
 9560                false,
 9561                window,
 9562                cx,
 9563            );
 9564        });
 9565
 9566        pane.update_in(cx, |pane, window, cx| {
 9567            pane.activate_item(2, true, true, window, cx);
 9568            assert_eq!(
 9569                pane.active_item().unwrap().item_id(),
 9570                multi_buffer_with_both_files_id,
 9571                "Should select the multi buffer in the pane"
 9572            );
 9573        });
 9574        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9575            pane.close_other_items(
 9576                &CloseOtherItems {
 9577                    save_intent: Some(SaveIntent::Save),
 9578                    close_pinned: true,
 9579                },
 9580                None,
 9581                window,
 9582                cx,
 9583            )
 9584        });
 9585        cx.background_executor.run_until_parked();
 9586        assert!(!cx.has_pending_prompt());
 9587        close_all_but_multi_buffer_task
 9588            .await
 9589            .expect("Closing all buffers but the multi buffer failed");
 9590        pane.update(cx, |pane, cx| {
 9591            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9592            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9593            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9594            assert_eq!(pane.items_len(), 1);
 9595            assert_eq!(
 9596                pane.active_item().unwrap().item_id(),
 9597                multi_buffer_with_both_files_id,
 9598                "Should have only the multi buffer left in the pane"
 9599            );
 9600            assert!(
 9601                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9602                "The multi buffer containing the unsaved buffer should still be dirty"
 9603            );
 9604        });
 9605
 9606        dirty_regular_buffer.update(cx, |buffer, cx| {
 9607            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9608        });
 9609
 9610        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9611            pane.close_active_item(
 9612                &CloseActiveItem {
 9613                    save_intent: Some(SaveIntent::Close),
 9614                    close_pinned: false,
 9615                },
 9616                window,
 9617                cx,
 9618            )
 9619        });
 9620        cx.background_executor.run_until_parked();
 9621        assert!(
 9622            cx.has_pending_prompt(),
 9623            "Dirty multi buffer should prompt a save dialog"
 9624        );
 9625        cx.simulate_prompt_answer("Save");
 9626        cx.background_executor.run_until_parked();
 9627        close_multi_buffer_task
 9628            .await
 9629            .expect("Closing the multi buffer failed");
 9630        pane.update(cx, |pane, cx| {
 9631            assert_eq!(
 9632                dirty_multi_buffer_with_both.read(cx).save_count,
 9633                1,
 9634                "Multi buffer item should get be saved"
 9635            );
 9636            // Test impl does not save inner items, so we do not assert them
 9637            assert_eq!(
 9638                pane.items_len(),
 9639                0,
 9640                "No more items should be left in the pane"
 9641            );
 9642            assert!(pane.active_item().is_none());
 9643        });
 9644    }
 9645
 9646    #[gpui::test]
 9647    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9648        cx: &mut TestAppContext,
 9649    ) {
 9650        init_test(cx);
 9651
 9652        let fs = FakeFs::new(cx.background_executor.clone());
 9653        let project = Project::test(fs, [], cx).await;
 9654        let (workspace, cx) =
 9655            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9656        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9657
 9658        let dirty_regular_buffer = cx.new(|cx| {
 9659            TestItem::new(cx)
 9660                .with_dirty(true)
 9661                .with_label("1.txt")
 9662                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9663        });
 9664        let dirty_regular_buffer_2 = cx.new(|cx| {
 9665            TestItem::new(cx)
 9666                .with_dirty(true)
 9667                .with_label("2.txt")
 9668                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9669        });
 9670        let clear_regular_buffer = cx.new(|cx| {
 9671            TestItem::new(cx)
 9672                .with_label("3.txt")
 9673                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9674        });
 9675
 9676        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9677            TestItem::new(cx)
 9678                .with_dirty(true)
 9679                .with_singleton(false)
 9680                .with_label("Fake Project Search")
 9681                .with_project_items(&[
 9682                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9683                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9684                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9685                ])
 9686        });
 9687        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9688        workspace.update_in(cx, |workspace, window, cx| {
 9689            workspace.add_item(
 9690                pane.clone(),
 9691                Box::new(dirty_regular_buffer.clone()),
 9692                None,
 9693                false,
 9694                false,
 9695                window,
 9696                cx,
 9697            );
 9698            workspace.add_item(
 9699                pane.clone(),
 9700                Box::new(dirty_multi_buffer_with_both.clone()),
 9701                None,
 9702                false,
 9703                false,
 9704                window,
 9705                cx,
 9706            );
 9707        });
 9708
 9709        pane.update_in(cx, |pane, window, cx| {
 9710            pane.activate_item(1, true, true, window, cx);
 9711            assert_eq!(
 9712                pane.active_item().unwrap().item_id(),
 9713                multi_buffer_with_both_files_id,
 9714                "Should select the multi buffer in the pane"
 9715            );
 9716        });
 9717        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9718            pane.close_active_item(
 9719                &CloseActiveItem {
 9720                    save_intent: None,
 9721                    close_pinned: false,
 9722                },
 9723                window,
 9724                cx,
 9725            )
 9726        });
 9727        cx.background_executor.run_until_parked();
 9728        assert!(
 9729            cx.has_pending_prompt(),
 9730            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9731        );
 9732    }
 9733
 9734    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9735    /// closed when they are deleted from disk.
 9736    #[gpui::test]
 9737    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9738        init_test(cx);
 9739
 9740        // Enable the close_on_disk_deletion setting
 9741        cx.update_global(|store: &mut SettingsStore, cx| {
 9742            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9743                settings.close_on_file_delete = Some(true);
 9744            });
 9745        });
 9746
 9747        let fs = FakeFs::new(cx.background_executor.clone());
 9748        let project = Project::test(fs, [], cx).await;
 9749        let (workspace, cx) =
 9750            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9751        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9752
 9753        // Create a test item that simulates a file
 9754        let item = cx.new(|cx| {
 9755            TestItem::new(cx)
 9756                .with_label("test.txt")
 9757                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9758        });
 9759
 9760        // Add item to workspace
 9761        workspace.update_in(cx, |workspace, window, cx| {
 9762            workspace.add_item(
 9763                pane.clone(),
 9764                Box::new(item.clone()),
 9765                None,
 9766                false,
 9767                false,
 9768                window,
 9769                cx,
 9770            );
 9771        });
 9772
 9773        // Verify the item is in the pane
 9774        pane.read_with(cx, |pane, _| {
 9775            assert_eq!(pane.items().count(), 1);
 9776        });
 9777
 9778        // Simulate file deletion by setting the item's deleted state
 9779        item.update(cx, |item, _| {
 9780            item.set_has_deleted_file(true);
 9781        });
 9782
 9783        // Emit UpdateTab event to trigger the close behavior
 9784        cx.run_until_parked();
 9785        item.update(cx, |_, cx| {
 9786            cx.emit(ItemEvent::UpdateTab);
 9787        });
 9788
 9789        // Allow the close operation to complete
 9790        cx.run_until_parked();
 9791
 9792        // Verify the item was automatically closed
 9793        pane.read_with(cx, |pane, _| {
 9794            assert_eq!(
 9795                pane.items().count(),
 9796                0,
 9797                "Item should be automatically closed when file is deleted"
 9798            );
 9799        });
 9800    }
 9801
 9802    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9803    /// open with a strikethrough when they are deleted from disk.
 9804    #[gpui::test]
 9805    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9806        init_test(cx);
 9807
 9808        // Ensure close_on_disk_deletion is disabled (default)
 9809        cx.update_global(|store: &mut SettingsStore, cx| {
 9810            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9811                settings.close_on_file_delete = Some(false);
 9812            });
 9813        });
 9814
 9815        let fs = FakeFs::new(cx.background_executor.clone());
 9816        let project = Project::test(fs, [], cx).await;
 9817        let (workspace, cx) =
 9818            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9819        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9820
 9821        // Create a test item that simulates a file
 9822        let item = cx.new(|cx| {
 9823            TestItem::new(cx)
 9824                .with_label("test.txt")
 9825                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9826        });
 9827
 9828        // Add item to workspace
 9829        workspace.update_in(cx, |workspace, window, cx| {
 9830            workspace.add_item(
 9831                pane.clone(),
 9832                Box::new(item.clone()),
 9833                None,
 9834                false,
 9835                false,
 9836                window,
 9837                cx,
 9838            );
 9839        });
 9840
 9841        // Verify the item is in the pane
 9842        pane.read_with(cx, |pane, _| {
 9843            assert_eq!(pane.items().count(), 1);
 9844        });
 9845
 9846        // Simulate file deletion
 9847        item.update(cx, |item, _| {
 9848            item.set_has_deleted_file(true);
 9849        });
 9850
 9851        // Emit UpdateTab event
 9852        cx.run_until_parked();
 9853        item.update(cx, |_, cx| {
 9854            cx.emit(ItemEvent::UpdateTab);
 9855        });
 9856
 9857        // Allow any potential close operation to complete
 9858        cx.run_until_parked();
 9859
 9860        // Verify the item remains open (with strikethrough)
 9861        pane.read_with(cx, |pane, _| {
 9862            assert_eq!(
 9863                pane.items().count(),
 9864                1,
 9865                "Item should remain open when close_on_disk_deletion is disabled"
 9866            );
 9867        });
 9868
 9869        // Verify the item shows as deleted
 9870        item.read_with(cx, |item, _| {
 9871            assert!(
 9872                item.has_deleted_file,
 9873                "Item should be marked as having deleted file"
 9874            );
 9875        });
 9876    }
 9877
 9878    /// Tests that dirty files are not automatically closed when deleted from disk,
 9879    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9880    /// unsaved changes without being prompted.
 9881    #[gpui::test]
 9882    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9883        init_test(cx);
 9884
 9885        // Enable the close_on_file_delete setting
 9886        cx.update_global(|store: &mut SettingsStore, cx| {
 9887            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9888                settings.close_on_file_delete = Some(true);
 9889            });
 9890        });
 9891
 9892        let fs = FakeFs::new(cx.background_executor.clone());
 9893        let project = Project::test(fs, [], cx).await;
 9894        let (workspace, cx) =
 9895            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9896        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9897
 9898        // Create a dirty test item
 9899        let item = cx.new(|cx| {
 9900            TestItem::new(cx)
 9901                .with_dirty(true)
 9902                .with_label("test.txt")
 9903                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9904        });
 9905
 9906        // Add item to workspace
 9907        workspace.update_in(cx, |workspace, window, cx| {
 9908            workspace.add_item(
 9909                pane.clone(),
 9910                Box::new(item.clone()),
 9911                None,
 9912                false,
 9913                false,
 9914                window,
 9915                cx,
 9916            );
 9917        });
 9918
 9919        // Simulate file deletion
 9920        item.update(cx, |item, _| {
 9921            item.set_has_deleted_file(true);
 9922        });
 9923
 9924        // Emit UpdateTab event to trigger the close behavior
 9925        cx.run_until_parked();
 9926        item.update(cx, |_, cx| {
 9927            cx.emit(ItemEvent::UpdateTab);
 9928        });
 9929
 9930        // Allow any potential close operation to complete
 9931        cx.run_until_parked();
 9932
 9933        // Verify the item remains open (dirty files are not auto-closed)
 9934        pane.read_with(cx, |pane, _| {
 9935            assert_eq!(
 9936                pane.items().count(),
 9937                1,
 9938                "Dirty items should not be automatically closed even when file is deleted"
 9939            );
 9940        });
 9941
 9942        // Verify the item is marked as deleted and still dirty
 9943        item.read_with(cx, |item, _| {
 9944            assert!(
 9945                item.has_deleted_file,
 9946                "Item should be marked as having deleted file"
 9947            );
 9948            assert!(item.is_dirty, "Item should still be dirty");
 9949        });
 9950    }
 9951
 9952    /// Tests that navigation history is cleaned up when files are auto-closed
 9953    /// due to deletion from disk.
 9954    #[gpui::test]
 9955    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9956        init_test(cx);
 9957
 9958        // Enable the close_on_file_delete setting
 9959        cx.update_global(|store: &mut SettingsStore, cx| {
 9960            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9961                settings.close_on_file_delete = Some(true);
 9962            });
 9963        });
 9964
 9965        let fs = FakeFs::new(cx.background_executor.clone());
 9966        let project = Project::test(fs, [], cx).await;
 9967        let (workspace, cx) =
 9968            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9969        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9970
 9971        // Create test items
 9972        let item1 = cx.new(|cx| {
 9973            TestItem::new(cx)
 9974                .with_label("test1.txt")
 9975                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9976        });
 9977        let item1_id = item1.item_id();
 9978
 9979        let item2 = cx.new(|cx| {
 9980            TestItem::new(cx)
 9981                .with_label("test2.txt")
 9982                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9983        });
 9984
 9985        // Add items to workspace
 9986        workspace.update_in(cx, |workspace, window, cx| {
 9987            workspace.add_item(
 9988                pane.clone(),
 9989                Box::new(item1.clone()),
 9990                None,
 9991                false,
 9992                false,
 9993                window,
 9994                cx,
 9995            );
 9996            workspace.add_item(
 9997                pane.clone(),
 9998                Box::new(item2.clone()),
 9999                None,
10000                false,
10001                false,
10002                window,
10003                cx,
10004            );
10005        });
10006
10007        // Activate item1 to ensure it gets navigation entries
10008        pane.update_in(cx, |pane, window, cx| {
10009            pane.activate_item(0, true, true, window, cx);
10010        });
10011
10012        // Switch to item2 and back to create navigation history
10013        pane.update_in(cx, |pane, window, cx| {
10014            pane.activate_item(1, true, true, window, cx);
10015        });
10016        cx.run_until_parked();
10017
10018        pane.update_in(cx, |pane, window, cx| {
10019            pane.activate_item(0, true, true, window, cx);
10020        });
10021        cx.run_until_parked();
10022
10023        // Simulate file deletion for item1
10024        item1.update(cx, |item, _| {
10025            item.set_has_deleted_file(true);
10026        });
10027
10028        // Emit UpdateTab event to trigger the close behavior
10029        item1.update(cx, |_, cx| {
10030            cx.emit(ItemEvent::UpdateTab);
10031        });
10032        cx.run_until_parked();
10033
10034        // Verify item1 was closed
10035        pane.read_with(cx, |pane, _| {
10036            assert_eq!(
10037                pane.items().count(),
10038                1,
10039                "Should have 1 item remaining after auto-close"
10040            );
10041        });
10042
10043        // Check navigation history after close
10044        let has_item = pane.read_with(cx, |pane, cx| {
10045            let mut has_item = false;
10046            pane.nav_history().for_each_entry(cx, |entry, _| {
10047                if entry.item.id() == item1_id {
10048                    has_item = true;
10049                }
10050            });
10051            has_item
10052        });
10053
10054        assert!(
10055            !has_item,
10056            "Navigation history should not contain closed item entries"
10057        );
10058    }
10059
10060    #[gpui::test]
10061    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10062        cx: &mut TestAppContext,
10063    ) {
10064        init_test(cx);
10065
10066        let fs = FakeFs::new(cx.background_executor.clone());
10067        let project = Project::test(fs, [], cx).await;
10068        let (workspace, cx) =
10069            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10070        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10071
10072        let dirty_regular_buffer = cx.new(|cx| {
10073            TestItem::new(cx)
10074                .with_dirty(true)
10075                .with_label("1.txt")
10076                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10077        });
10078        let dirty_regular_buffer_2 = cx.new(|cx| {
10079            TestItem::new(cx)
10080                .with_dirty(true)
10081                .with_label("2.txt")
10082                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10083        });
10084        let clear_regular_buffer = cx.new(|cx| {
10085            TestItem::new(cx)
10086                .with_label("3.txt")
10087                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10088        });
10089
10090        let dirty_multi_buffer = cx.new(|cx| {
10091            TestItem::new(cx)
10092                .with_dirty(true)
10093                .with_singleton(false)
10094                .with_label("Fake Project Search")
10095                .with_project_items(&[
10096                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10097                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10098                    clear_regular_buffer.read(cx).project_items[0].clone(),
10099                ])
10100        });
10101        workspace.update_in(cx, |workspace, window, cx| {
10102            workspace.add_item(
10103                pane.clone(),
10104                Box::new(dirty_regular_buffer.clone()),
10105                None,
10106                false,
10107                false,
10108                window,
10109                cx,
10110            );
10111            workspace.add_item(
10112                pane.clone(),
10113                Box::new(dirty_regular_buffer_2.clone()),
10114                None,
10115                false,
10116                false,
10117                window,
10118                cx,
10119            );
10120            workspace.add_item(
10121                pane.clone(),
10122                Box::new(dirty_multi_buffer.clone()),
10123                None,
10124                false,
10125                false,
10126                window,
10127                cx,
10128            );
10129        });
10130
10131        pane.update_in(cx, |pane, window, cx| {
10132            pane.activate_item(2, true, true, window, cx);
10133            assert_eq!(
10134                pane.active_item().unwrap().item_id(),
10135                dirty_multi_buffer.item_id(),
10136                "Should select the multi buffer in the pane"
10137            );
10138        });
10139        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10140            pane.close_active_item(
10141                &CloseActiveItem {
10142                    save_intent: None,
10143                    close_pinned: false,
10144                },
10145                window,
10146                cx,
10147            )
10148        });
10149        cx.background_executor.run_until_parked();
10150        assert!(
10151            !cx.has_pending_prompt(),
10152            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10153        );
10154        close_multi_buffer_task
10155            .await
10156            .expect("Closing multi buffer failed");
10157        pane.update(cx, |pane, cx| {
10158            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10159            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10160            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10161            assert_eq!(
10162                pane.items()
10163                    .map(|item| item.item_id())
10164                    .sorted()
10165                    .collect::<Vec<_>>(),
10166                vec![
10167                    dirty_regular_buffer.item_id(),
10168                    dirty_regular_buffer_2.item_id(),
10169                ],
10170                "Should have no multi buffer left in the pane"
10171            );
10172            assert!(dirty_regular_buffer.read(cx).is_dirty);
10173            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10174        });
10175    }
10176
10177    #[gpui::test]
10178    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10179        init_test(cx);
10180        let fs = FakeFs::new(cx.executor());
10181        let project = Project::test(fs, [], cx).await;
10182        let (workspace, cx) =
10183            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10184
10185        // Add a new panel to the right dock, opening the dock and setting the
10186        // focus to the new panel.
10187        let panel = workspace.update_in(cx, |workspace, window, cx| {
10188            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10189            workspace.add_panel(panel.clone(), window, cx);
10190
10191            workspace
10192                .right_dock()
10193                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10194
10195            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10196
10197            panel
10198        });
10199
10200        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10201        // panel to the next valid position which, in this case, is the left
10202        // dock.
10203        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10204        workspace.update(cx, |workspace, cx| {
10205            assert!(workspace.left_dock().read(cx).is_open());
10206            assert_eq!(panel.read(cx).position, DockPosition::Left);
10207        });
10208
10209        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10210        // panel to the next valid position which, in this case, is the bottom
10211        // dock.
10212        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10213        workspace.update(cx, |workspace, cx| {
10214            assert!(workspace.bottom_dock().read(cx).is_open());
10215            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10216        });
10217
10218        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10219        // around moving the panel to its initial position, the right dock.
10220        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10221        workspace.update(cx, |workspace, cx| {
10222            assert!(workspace.right_dock().read(cx).is_open());
10223            assert_eq!(panel.read(cx).position, DockPosition::Right);
10224        });
10225
10226        // Remove focus from the panel, ensuring that, if the panel is not
10227        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10228        // the panel's position, so the panel is still in the right dock.
10229        workspace.update_in(cx, |workspace, window, cx| {
10230            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10231        });
10232
10233        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10234        workspace.update(cx, |workspace, cx| {
10235            assert!(workspace.right_dock().read(cx).is_open());
10236            assert_eq!(panel.read(cx).position, DockPosition::Right);
10237        });
10238    }
10239
10240    #[gpui::test]
10241    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10242        init_test(cx);
10243
10244        let fs = FakeFs::new(cx.executor());
10245        let project = Project::test(fs, [], cx).await;
10246        let (workspace, cx) =
10247            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10248
10249        let item_1 = cx.new(|cx| {
10250            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10251        });
10252        workspace.update_in(cx, |workspace, window, cx| {
10253            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10254            workspace.move_item_to_pane_in_direction(
10255                &MoveItemToPaneInDirection {
10256                    direction: SplitDirection::Right,
10257                    focus: true,
10258                    clone: false,
10259                },
10260                window,
10261                cx,
10262            );
10263            workspace.move_item_to_pane_at_index(
10264                &MoveItemToPane {
10265                    destination: 3,
10266                    focus: true,
10267                    clone: false,
10268                },
10269                window,
10270                cx,
10271            );
10272
10273            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10274            assert_eq!(
10275                pane_items_paths(&workspace.active_pane, cx),
10276                vec!["first.txt".to_string()],
10277                "Single item was not moved anywhere"
10278            );
10279        });
10280
10281        let item_2 = cx.new(|cx| {
10282            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10283        });
10284        workspace.update_in(cx, |workspace, window, cx| {
10285            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10286            assert_eq!(
10287                pane_items_paths(&workspace.panes[0], cx),
10288                vec!["first.txt".to_string(), "second.txt".to_string()],
10289            );
10290            workspace.move_item_to_pane_in_direction(
10291                &MoveItemToPaneInDirection {
10292                    direction: SplitDirection::Right,
10293                    focus: true,
10294                    clone: false,
10295                },
10296                window,
10297                cx,
10298            );
10299
10300            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10301            assert_eq!(
10302                pane_items_paths(&workspace.panes[0], cx),
10303                vec!["first.txt".to_string()],
10304                "After moving, one item should be left in the original pane"
10305            );
10306            assert_eq!(
10307                pane_items_paths(&workspace.panes[1], cx),
10308                vec!["second.txt".to_string()],
10309                "New item should have been moved to the new pane"
10310            );
10311        });
10312
10313        let item_3 = cx.new(|cx| {
10314            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10315        });
10316        workspace.update_in(cx, |workspace, window, cx| {
10317            let original_pane = workspace.panes[0].clone();
10318            workspace.set_active_pane(&original_pane, window, cx);
10319            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10320            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10321            assert_eq!(
10322                pane_items_paths(&workspace.active_pane, cx),
10323                vec!["first.txt".to_string(), "third.txt".to_string()],
10324                "New pane should be ready to move one item out"
10325            );
10326
10327            workspace.move_item_to_pane_at_index(
10328                &MoveItemToPane {
10329                    destination: 3,
10330                    focus: true,
10331                    clone: false,
10332                },
10333                window,
10334                cx,
10335            );
10336            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10337            assert_eq!(
10338                pane_items_paths(&workspace.active_pane, cx),
10339                vec!["first.txt".to_string()],
10340                "After moving, one item should be left in the original pane"
10341            );
10342            assert_eq!(
10343                pane_items_paths(&workspace.panes[1], cx),
10344                vec!["second.txt".to_string()],
10345                "Previously created pane should be unchanged"
10346            );
10347            assert_eq!(
10348                pane_items_paths(&workspace.panes[2], cx),
10349                vec!["third.txt".to_string()],
10350                "New item should have been moved to the new pane"
10351            );
10352        });
10353    }
10354
10355    #[gpui::test]
10356    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10357        init_test(cx);
10358
10359        let fs = FakeFs::new(cx.executor());
10360        let project = Project::test(fs, [], cx).await;
10361        let (workspace, cx) =
10362            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10363
10364        let item_1 = cx.new(|cx| {
10365            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10366        });
10367        workspace.update_in(cx, |workspace, window, cx| {
10368            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10369            workspace.move_item_to_pane_in_direction(
10370                &MoveItemToPaneInDirection {
10371                    direction: SplitDirection::Right,
10372                    focus: true,
10373                    clone: true,
10374                },
10375                window,
10376                cx,
10377            );
10378            workspace.move_item_to_pane_at_index(
10379                &MoveItemToPane {
10380                    destination: 3,
10381                    focus: true,
10382                    clone: true,
10383                },
10384                window,
10385                cx,
10386            );
10387
10388            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10389            for pane in workspace.panes() {
10390                assert_eq!(
10391                    pane_items_paths(pane, cx),
10392                    vec!["first.txt".to_string()],
10393                    "Single item exists in all panes"
10394                );
10395            }
10396        });
10397
10398        // verify that the active pane has been updated after waiting for the
10399        // pane focus event to fire and resolve
10400        workspace.read_with(cx, |workspace, _app| {
10401            assert_eq!(
10402                workspace.active_pane(),
10403                &workspace.panes[2],
10404                "The third pane should be the active one: {:?}",
10405                workspace.panes
10406            );
10407        })
10408    }
10409
10410    mod register_project_item_tests {
10411
10412        use super::*;
10413
10414        // View
10415        struct TestPngItemView {
10416            focus_handle: FocusHandle,
10417        }
10418        // Model
10419        struct TestPngItem {}
10420
10421        impl project::ProjectItem for TestPngItem {
10422            fn try_open(
10423                _project: &Entity<Project>,
10424                path: &ProjectPath,
10425                cx: &mut App,
10426            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10427                if path.path.extension().unwrap() == "png" {
10428                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10429                } else {
10430                    None
10431                }
10432            }
10433
10434            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10435                None
10436            }
10437
10438            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10439                None
10440            }
10441
10442            fn is_dirty(&self) -> bool {
10443                false
10444            }
10445        }
10446
10447        impl Item for TestPngItemView {
10448            type Event = ();
10449            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10450                "".into()
10451            }
10452        }
10453        impl EventEmitter<()> for TestPngItemView {}
10454        impl Focusable for TestPngItemView {
10455            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10456                self.focus_handle.clone()
10457            }
10458        }
10459
10460        impl Render for TestPngItemView {
10461            fn render(
10462                &mut self,
10463                _window: &mut Window,
10464                _cx: &mut Context<Self>,
10465            ) -> impl IntoElement {
10466                Empty
10467            }
10468        }
10469
10470        impl ProjectItem for TestPngItemView {
10471            type Item = TestPngItem;
10472
10473            fn for_project_item(
10474                _project: Entity<Project>,
10475                _pane: Option<&Pane>,
10476                _item: Entity<Self::Item>,
10477                _: &mut Window,
10478                cx: &mut Context<Self>,
10479            ) -> Self
10480            where
10481                Self: Sized,
10482            {
10483                Self {
10484                    focus_handle: cx.focus_handle(),
10485                }
10486            }
10487        }
10488
10489        // View
10490        struct TestIpynbItemView {
10491            focus_handle: FocusHandle,
10492        }
10493        // Model
10494        struct TestIpynbItem {}
10495
10496        impl project::ProjectItem for TestIpynbItem {
10497            fn try_open(
10498                _project: &Entity<Project>,
10499                path: &ProjectPath,
10500                cx: &mut App,
10501            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10502                if path.path.extension().unwrap() == "ipynb" {
10503                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10504                } else {
10505                    None
10506                }
10507            }
10508
10509            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10510                None
10511            }
10512
10513            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10514                None
10515            }
10516
10517            fn is_dirty(&self) -> bool {
10518                false
10519            }
10520        }
10521
10522        impl Item for TestIpynbItemView {
10523            type Event = ();
10524            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10525                "".into()
10526            }
10527        }
10528        impl EventEmitter<()> for TestIpynbItemView {}
10529        impl Focusable for TestIpynbItemView {
10530            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10531                self.focus_handle.clone()
10532            }
10533        }
10534
10535        impl Render for TestIpynbItemView {
10536            fn render(
10537                &mut self,
10538                _window: &mut Window,
10539                _cx: &mut Context<Self>,
10540            ) -> impl IntoElement {
10541                Empty
10542            }
10543        }
10544
10545        impl ProjectItem for TestIpynbItemView {
10546            type Item = TestIpynbItem;
10547
10548            fn for_project_item(
10549                _project: Entity<Project>,
10550                _pane: Option<&Pane>,
10551                _item: Entity<Self::Item>,
10552                _: &mut Window,
10553                cx: &mut Context<Self>,
10554            ) -> Self
10555            where
10556                Self: Sized,
10557            {
10558                Self {
10559                    focus_handle: cx.focus_handle(),
10560                }
10561            }
10562        }
10563
10564        struct TestAlternatePngItemView {
10565            focus_handle: FocusHandle,
10566        }
10567
10568        impl Item for TestAlternatePngItemView {
10569            type Event = ();
10570            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10571                "".into()
10572            }
10573        }
10574
10575        impl EventEmitter<()> for TestAlternatePngItemView {}
10576        impl Focusable for TestAlternatePngItemView {
10577            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10578                self.focus_handle.clone()
10579            }
10580        }
10581
10582        impl Render for TestAlternatePngItemView {
10583            fn render(
10584                &mut self,
10585                _window: &mut Window,
10586                _cx: &mut Context<Self>,
10587            ) -> impl IntoElement {
10588                Empty
10589            }
10590        }
10591
10592        impl ProjectItem for TestAlternatePngItemView {
10593            type Item = TestPngItem;
10594
10595            fn for_project_item(
10596                _project: Entity<Project>,
10597                _pane: Option<&Pane>,
10598                _item: Entity<Self::Item>,
10599                _: &mut Window,
10600                cx: &mut Context<Self>,
10601            ) -> Self
10602            where
10603                Self: Sized,
10604            {
10605                Self {
10606                    focus_handle: cx.focus_handle(),
10607                }
10608            }
10609        }
10610
10611        #[gpui::test]
10612        async fn test_register_project_item(cx: &mut TestAppContext) {
10613            init_test(cx);
10614
10615            cx.update(|cx| {
10616                register_project_item::<TestPngItemView>(cx);
10617                register_project_item::<TestIpynbItemView>(cx);
10618            });
10619
10620            let fs = FakeFs::new(cx.executor());
10621            fs.insert_tree(
10622                "/root1",
10623                json!({
10624                    "one.png": "BINARYDATAHERE",
10625                    "two.ipynb": "{ totally a notebook }",
10626                    "three.txt": "editing text, sure why not?"
10627                }),
10628            )
10629            .await;
10630
10631            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10632            let (workspace, cx) =
10633                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10634
10635            let worktree_id = project.update(cx, |project, cx| {
10636                project.worktrees(cx).next().unwrap().read(cx).id()
10637            });
10638
10639            let handle = workspace
10640                .update_in(cx, |workspace, window, cx| {
10641                    let project_path = (worktree_id, "one.png");
10642                    workspace.open_path(project_path, None, true, window, cx)
10643                })
10644                .await
10645                .unwrap();
10646
10647            // Now we can check if the handle we got back errored or not
10648            assert_eq!(
10649                handle.to_any().entity_type(),
10650                TypeId::of::<TestPngItemView>()
10651            );
10652
10653            let handle = workspace
10654                .update_in(cx, |workspace, window, cx| {
10655                    let project_path = (worktree_id, "two.ipynb");
10656                    workspace.open_path(project_path, None, true, window, cx)
10657                })
10658                .await
10659                .unwrap();
10660
10661            assert_eq!(
10662                handle.to_any().entity_type(),
10663                TypeId::of::<TestIpynbItemView>()
10664            );
10665
10666            let handle = workspace
10667                .update_in(cx, |workspace, window, cx| {
10668                    let project_path = (worktree_id, "three.txt");
10669                    workspace.open_path(project_path, None, true, window, cx)
10670                })
10671                .await;
10672            assert!(handle.is_err());
10673        }
10674
10675        #[gpui::test]
10676        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10677            init_test(cx);
10678
10679            cx.update(|cx| {
10680                register_project_item::<TestPngItemView>(cx);
10681                register_project_item::<TestAlternatePngItemView>(cx);
10682            });
10683
10684            let fs = FakeFs::new(cx.executor());
10685            fs.insert_tree(
10686                "/root1",
10687                json!({
10688                    "one.png": "BINARYDATAHERE",
10689                    "two.ipynb": "{ totally a notebook }",
10690                    "three.txt": "editing text, sure why not?"
10691                }),
10692            )
10693            .await;
10694            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10695            let (workspace, cx) =
10696                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10697            let worktree_id = project.update(cx, |project, cx| {
10698                project.worktrees(cx).next().unwrap().read(cx).id()
10699            });
10700
10701            let handle = workspace
10702                .update_in(cx, |workspace, window, cx| {
10703                    let project_path = (worktree_id, "one.png");
10704                    workspace.open_path(project_path, None, true, window, cx)
10705                })
10706                .await
10707                .unwrap();
10708
10709            // This _must_ be the second item registered
10710            assert_eq!(
10711                handle.to_any().entity_type(),
10712                TypeId::of::<TestAlternatePngItemView>()
10713            );
10714
10715            let handle = workspace
10716                .update_in(cx, |workspace, window, cx| {
10717                    let project_path = (worktree_id, "three.txt");
10718                    workspace.open_path(project_path, None, true, window, cx)
10719                })
10720                .await;
10721            assert!(handle.is_err());
10722        }
10723    }
10724
10725    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10726        pane.read(cx)
10727            .items()
10728            .flat_map(|item| {
10729                item.project_paths(cx)
10730                    .into_iter()
10731                    .map(|path| path.path.to_string_lossy().to_string())
10732            })
10733            .collect()
10734    }
10735
10736    pub fn init_test(cx: &mut TestAppContext) {
10737        cx.update(|cx| {
10738            let settings_store = SettingsStore::test(cx);
10739            cx.set_global(settings_store);
10740            theme::init(theme::LoadThemes::JustBase, cx);
10741            language::init(cx);
10742            crate::init_settings(cx);
10743            Project::init_settings(cx);
10744        });
10745    }
10746
10747    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10748        let item = TestProjectItem::new(id, path, cx);
10749        item.update(cx, |item, _| {
10750            item.is_dirty = true;
10751        });
10752        item
10753    }
10754}