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
   18pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   19
   20use anyhow::{Context as _, Result, anyhow};
   21use call::{ActiveCall, call_settings::CallSettings};
   22use client::{
   23    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   24    proto::{self, ErrorCode, PanelId, PeerId},
   25};
   26use collections::{HashMap, HashSet, hash_map};
   27pub use dock::Panel;
   28use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   29use futures::{
   30    Future, FutureExt, StreamExt,
   31    channel::{
   32        mpsc::{self, UnboundedReceiver, UnboundedSender},
   33        oneshot,
   34    },
   35    future::{Shared, try_join_all},
   36};
   37use gpui::{
   38    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   39    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   40    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   41    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   42    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   43    point, relative, size, transparent_black,
   44};
   45pub use history_manager::*;
   46pub use item::{
   47    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   48    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   49};
   50use itertools::Itertools;
   51use language::{
   52    Buffer, LanguageRegistry, Rope,
   53    language_settings::{AllLanguageSettings, all_language_settings},
   54};
   55pub use modal_layer::*;
   56use node_runtime::NodeRuntime;
   57use notifications::{
   58    DetachAndPromptErr, Notifications, dismiss_app_notification,
   59    simple_message_notification::MessageNotification,
   60};
   61pub use pane::*;
   62pub use pane_group::*;
   63use persistence::{
   64    DB, SerializedWindowBounds,
   65    model::{SerializedSshProject, SerializedWorkspace},
   66};
   67pub use persistence::{
   68    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   69    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   70};
   71use postage::stream::Stream;
   72use project::{
   73    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   74    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   75};
   76use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   77use schemars::JsonSchema;
   78use serde::Deserialize;
   79use session::AppSession;
   80use settings::{Settings, update_settings_file};
   81use shared_screen::SharedScreen;
   82use sqlez::{
   83    bindable::{Bind, Column, StaticColumnCount},
   84    statement::Statement,
   85};
   86use status_bar::StatusBar;
   87pub use status_bar::StatusItemView;
   88use std::{
   89    any::TypeId,
   90    borrow::Cow,
   91    cell::RefCell,
   92    cmp,
   93    collections::{VecDeque, hash_map::DefaultHasher},
   94    env,
   95    hash::{Hash, Hasher},
   96    path::{Path, PathBuf},
   97    process::ExitStatus,
   98    rc::Rc,
   99    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
  100    time::Duration,
  101};
  102use task::{DebugScenario, SpawnInTerminal, TaskContext};
  103use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  104pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  105pub use ui;
  106use ui::{Window, prelude::*};
  107use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  108use uuid::Uuid;
  109pub use workspace_settings::{
  110    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  111};
  112use zed_actions::{Spawn, feedback::FileBugReport};
  113
  114use crate::notifications::NotificationId;
  115use crate::persistence::{
  116    SerializedAxis,
  117    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  118};
  119
  120pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  121
  122static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  123    env::var("ZED_WINDOW_SIZE")
  124        .ok()
  125        .as_deref()
  126        .and_then(parse_pixel_size_env_var)
  127});
  128
  129static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  130    env::var("ZED_WINDOW_POSITION")
  131        .ok()
  132        .as_deref()
  133        .and_then(parse_pixel_position_env_var)
  134});
  135
  136pub trait TerminalProvider {
  137    fn spawn(
  138        &self,
  139        task: SpawnInTerminal,
  140        window: &mut Window,
  141        cx: &mut App,
  142    ) -> Task<Option<Result<ExitStatus>>>;
  143}
  144
  145pub trait DebuggerProvider {
  146    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  147    fn start_session(
  148        &self,
  149        definition: DebugScenario,
  150        task_context: TaskContext,
  151        active_buffer: Option<Entity<Buffer>>,
  152        worktree_id: Option<WorktreeId>,
  153        window: &mut Window,
  154        cx: &mut App,
  155    );
  156
  157    fn spawn_task_or_modal(
  158        &self,
  159        workspace: &mut Workspace,
  160        action: &Spawn,
  161        window: &mut Window,
  162        cx: &mut Context<Workspace>,
  163    );
  164
  165    fn task_scheduled(&self, cx: &mut App);
  166    fn debug_scenario_scheduled(&self, cx: &mut App);
  167    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  168
  169    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  170}
  171
  172actions!(
  173    workspace,
  174    [
  175        /// Activates the next pane in the workspace.
  176        ActivateNextPane,
  177        /// Activates the previous pane in the workspace.
  178        ActivatePreviousPane,
  179        /// Switches to the next window.
  180        ActivateNextWindow,
  181        /// Switches to the previous window.
  182        ActivatePreviousWindow,
  183        /// Adds a folder to the current project.
  184        AddFolderToProject,
  185        /// Clears all notifications.
  186        ClearAllNotifications,
  187        /// Closes the active dock.
  188        CloseActiveDock,
  189        /// Closes all docks.
  190        CloseAllDocks,
  191        /// Closes the current window.
  192        CloseWindow,
  193        /// Opens the feedback dialog.
  194        Feedback,
  195        /// Follows the next collaborator in the session.
  196        FollowNextCollaborator,
  197        /// Moves the focused panel to the next position.
  198        MoveFocusedPanelToNextPosition,
  199        /// Opens a new terminal in the center.
  200        NewCenterTerminal,
  201        /// Creates a new file.
  202        NewFile,
  203        /// Creates a new file in a vertical split.
  204        NewFileSplitVertical,
  205        /// Creates a new file in a horizontal split.
  206        NewFileSplitHorizontal,
  207        /// Opens a new search.
  208        NewSearch,
  209        /// Opens a new terminal.
  210        NewTerminal,
  211        /// Opens a new window.
  212        NewWindow,
  213        /// Opens a file or directory.
  214        Open,
  215        /// Opens multiple files.
  216        OpenFiles,
  217        /// Opens the current location in terminal.
  218        OpenInTerminal,
  219        /// Opens the component preview.
  220        OpenComponentPreview,
  221        /// Reloads the active item.
  222        ReloadActiveItem,
  223        /// Resets the active dock to its default size.
  224        ResetActiveDockSize,
  225        /// Resets all open docks to their default sizes.
  226        ResetOpenDocksSize,
  227        /// Saves the current file with a new name.
  228        SaveAs,
  229        /// Saves without formatting.
  230        SaveWithoutFormat,
  231        /// Shuts down all debug adapters.
  232        ShutdownDebugAdapters,
  233        /// Suppresses the current notification.
  234        SuppressNotification,
  235        /// Toggles the bottom dock.
  236        ToggleBottomDock,
  237        /// Toggles centered layout mode.
  238        ToggleCenteredLayout,
  239        /// Toggles edit prediction feature globally for all files.
  240        ToggleEditPrediction,
  241        /// Toggles the left dock.
  242        ToggleLeftDock,
  243        /// Toggles the right dock.
  244        ToggleRightDock,
  245        /// Toggles zoom on the active pane.
  246        ToggleZoom,
  247        /// Stops following a collaborator.
  248        Unfollow,
  249        /// Shows the welcome screen.
  250        Welcome,
  251        /// Restores the banner.
  252        RestoreBanner,
  253        /// Toggles expansion of the selected item.
  254        ToggleExpandItem,
  255    ]
  256);
  257
  258#[derive(Clone, PartialEq)]
  259pub struct OpenPaths {
  260    pub paths: Vec<PathBuf>,
  261}
  262
  263/// Activates a specific pane by its index.
  264#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  265#[action(namespace = workspace)]
  266pub struct ActivatePane(pub usize);
  267
  268/// Moves an item to a specific pane by index.
  269#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  270#[action(namespace = workspace)]
  271#[serde(deny_unknown_fields)]
  272pub struct MoveItemToPane {
  273    #[serde(default = "default_1")]
  274    pub destination: usize,
  275    #[serde(default = "default_true")]
  276    pub focus: bool,
  277    #[serde(default)]
  278    pub clone: bool,
  279}
  280
  281fn default_1() -> usize {
  282    1
  283}
  284
  285/// Moves an item to a pane in the specified direction.
  286#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  287#[action(namespace = workspace)]
  288#[serde(deny_unknown_fields)]
  289pub struct MoveItemToPaneInDirection {
  290    #[serde(default = "default_right")]
  291    pub direction: SplitDirection,
  292    #[serde(default = "default_true")]
  293    pub focus: bool,
  294    #[serde(default)]
  295    pub clone: bool,
  296}
  297
  298fn default_right() -> SplitDirection {
  299    SplitDirection::Right
  300}
  301
  302/// Saves all open files in the workspace.
  303#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  304#[action(namespace = workspace)]
  305#[serde(deny_unknown_fields)]
  306pub struct SaveAll {
  307    #[serde(default)]
  308    pub save_intent: Option<SaveIntent>,
  309}
  310
  311/// Saves the current file with the specified options.
  312#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  313#[action(namespace = workspace)]
  314#[serde(deny_unknown_fields)]
  315pub struct Save {
  316    #[serde(default)]
  317    pub save_intent: Option<SaveIntent>,
  318}
  319
  320/// Closes all items and panes in the workspace.
  321#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  322#[action(namespace = workspace)]
  323#[serde(deny_unknown_fields)]
  324pub struct CloseAllItemsAndPanes {
  325    #[serde(default)]
  326    pub save_intent: Option<SaveIntent>,
  327}
  328
  329/// Closes all inactive tabs and panes in the workspace.
  330#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  331#[action(namespace = workspace)]
  332#[serde(deny_unknown_fields)]
  333pub struct CloseInactiveTabsAndPanes {
  334    #[serde(default)]
  335    pub save_intent: Option<SaveIntent>,
  336}
  337
  338/// Sends a sequence of keystrokes to the active element.
  339#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  340#[action(namespace = workspace)]
  341pub struct SendKeystrokes(pub String);
  342
  343/// Reloads the active item or workspace.
  344#[derive(Clone, Deserialize, PartialEq, Default, JsonSchema, Action)]
  345#[action(namespace = workspace)]
  346#[serde(deny_unknown_fields)]
  347pub struct Reload {
  348    pub binary_path: Option<PathBuf>,
  349}
  350
  351actions!(
  352    project_symbols,
  353    [
  354        /// Toggles the project symbols search.
  355        #[action(name = "Toggle")]
  356        ToggleProjectSymbols
  357    ]
  358);
  359
  360/// Toggles the file finder interface.
  361#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  362#[action(namespace = file_finder, name = "Toggle")]
  363#[serde(deny_unknown_fields)]
  364pub struct ToggleFileFinder {
  365    #[serde(default)]
  366    pub separate_history: bool,
  367}
  368
  369/// Increases size of a currently focused dock by a given amount of pixels.
  370#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  371#[action(namespace = workspace)]
  372#[serde(deny_unknown_fields)]
  373pub struct IncreaseActiveDockSize {
  374    /// For 0px parameter, uses UI font size value.
  375    #[serde(default)]
  376    pub px: u32,
  377}
  378
  379/// Decreases size of a currently focused dock by a given amount of pixels.
  380#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  381#[action(namespace = workspace)]
  382#[serde(deny_unknown_fields)]
  383pub struct DecreaseActiveDockSize {
  384    /// For 0px parameter, uses UI font size value.
  385    #[serde(default)]
  386    pub px: u32,
  387}
  388
  389/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  390#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  391#[action(namespace = workspace)]
  392#[serde(deny_unknown_fields)]
  393pub struct IncreaseOpenDocksSize {
  394    /// For 0px parameter, uses UI font size value.
  395    #[serde(default)]
  396    pub px: u32,
  397}
  398
  399/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  400#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  401#[action(namespace = workspace)]
  402#[serde(deny_unknown_fields)]
  403pub struct DecreaseOpenDocksSize {
  404    /// For 0px parameter, uses UI font size value.
  405    #[serde(default)]
  406    pub px: u32,
  407}
  408
  409actions!(
  410    workspace,
  411    [
  412        /// Activates the pane to the left.
  413        ActivatePaneLeft,
  414        /// Activates the pane to the right.
  415        ActivatePaneRight,
  416        /// Activates the pane above.
  417        ActivatePaneUp,
  418        /// Activates the pane below.
  419        ActivatePaneDown,
  420        /// Swaps the current pane with the one to the left.
  421        SwapPaneLeft,
  422        /// Swaps the current pane with the one to the right.
  423        SwapPaneRight,
  424        /// Swaps the current pane with the one above.
  425        SwapPaneUp,
  426        /// Swaps the current pane with the one below.
  427        SwapPaneDown,
  428    ]
  429);
  430
  431#[derive(PartialEq, Eq, Debug)]
  432pub enum CloseIntent {
  433    /// Quit the program entirely.
  434    Quit,
  435    /// Close a window.
  436    CloseWindow,
  437    /// Replace the workspace in an existing window.
  438    ReplaceWindow,
  439}
  440
  441#[derive(Clone)]
  442pub struct Toast {
  443    id: NotificationId,
  444    msg: Cow<'static, str>,
  445    autohide: bool,
  446    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  447}
  448
  449impl Toast {
  450    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  451        Toast {
  452            id,
  453            msg: msg.into(),
  454            on_click: None,
  455            autohide: false,
  456        }
  457    }
  458
  459    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  460    where
  461        M: Into<Cow<'static, str>>,
  462        F: Fn(&mut Window, &mut App) + 'static,
  463    {
  464        self.on_click = Some((message.into(), Arc::new(on_click)));
  465        self
  466    }
  467
  468    pub fn autohide(mut self) -> Self {
  469        self.autohide = true;
  470        self
  471    }
  472}
  473
  474impl PartialEq for Toast {
  475    fn eq(&self, other: &Self) -> bool {
  476        self.id == other.id
  477            && self.msg == other.msg
  478            && self.on_click.is_some() == other.on_click.is_some()
  479    }
  480}
  481
  482/// Opens a new terminal with the specified working directory.
  483#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  484#[action(namespace = workspace)]
  485#[serde(deny_unknown_fields)]
  486pub struct OpenTerminal {
  487    pub working_directory: PathBuf,
  488}
  489
  490#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  491pub struct WorkspaceId(i64);
  492
  493impl StaticColumnCount for WorkspaceId {}
  494impl Bind for WorkspaceId {
  495    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  496        self.0.bind(statement, start_index)
  497    }
  498}
  499impl Column for WorkspaceId {
  500    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  501        i64::column(statement, start_index)
  502            .map(|(i, next_index)| (Self(i), next_index))
  503            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  504    }
  505}
  506impl From<WorkspaceId> for i64 {
  507    fn from(val: WorkspaceId) -> Self {
  508        val.0
  509    }
  510}
  511
  512pub fn init_settings(cx: &mut App) {
  513    WorkspaceSettings::register(cx);
  514    ItemSettings::register(cx);
  515    PreviewTabsSettings::register(cx);
  516    TabBarSettings::register(cx);
  517}
  518
  519fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  520    let paths = cx.prompt_for_paths(options);
  521    cx.spawn(
  522        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  523            Ok(Some(paths)) => {
  524                cx.update(|cx| {
  525                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  526                })
  527                .ok();
  528            }
  529            Ok(None) => {}
  530            Err(err) => {
  531                util::log_err(&err);
  532                cx.update(|cx| {
  533                    if let Some(workspace_window) = cx
  534                        .active_window()
  535                        .and_then(|window| window.downcast::<Workspace>())
  536                    {
  537                        workspace_window
  538                            .update(cx, |workspace, _, cx| {
  539                                workspace.show_portal_error(err.to_string(), cx);
  540                            })
  541                            .ok();
  542                    }
  543                })
  544                .ok();
  545            }
  546        },
  547    )
  548    .detach();
  549}
  550
  551pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  552    init_settings(cx);
  553    component::init();
  554    theme_preview::init(cx);
  555    toast_layer::init(cx);
  556    history_manager::init(cx);
  557
  558    cx.on_action(Workspace::close_global);
  559    cx.on_action(reload);
  560
  561    cx.on_action({
  562        let app_state = Arc::downgrade(&app_state);
  563        move |_: &Open, cx: &mut App| {
  564            if let Some(app_state) = app_state.upgrade() {
  565                prompt_and_open_paths(
  566                    app_state,
  567                    PathPromptOptions {
  568                        files: true,
  569                        directories: true,
  570                        multiple: true,
  571                    },
  572                    cx,
  573                );
  574            }
  575        }
  576    });
  577    cx.on_action({
  578        let app_state = Arc::downgrade(&app_state);
  579        move |_: &OpenFiles, cx: &mut App| {
  580            let directories = cx.can_select_mixed_files_and_dirs();
  581            if let Some(app_state) = app_state.upgrade() {
  582                prompt_and_open_paths(
  583                    app_state,
  584                    PathPromptOptions {
  585                        files: true,
  586                        directories,
  587                        multiple: true,
  588                    },
  589                    cx,
  590                );
  591            }
  592        }
  593    });
  594}
  595
  596type BuildProjectItemFn =
  597    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  598
  599type BuildProjectItemForPathFn =
  600    fn(
  601        &Entity<Project>,
  602        &ProjectPath,
  603        &mut Window,
  604        &mut App,
  605    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  606
  607#[derive(Clone, Default)]
  608struct ProjectItemRegistry {
  609    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  610    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  611}
  612
  613impl ProjectItemRegistry {
  614    fn register<T: ProjectItem>(&mut self) {
  615        self.build_project_item_fns_by_type.insert(
  616            TypeId::of::<T::Item>(),
  617            |item, project, pane, window, cx| {
  618                let item = item.downcast().unwrap();
  619                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  620                    as Box<dyn ItemHandle>
  621            },
  622        );
  623        self.build_project_item_for_path_fns
  624            .push(|project, project_path, window, cx| {
  625                let project_item =
  626                    <T::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
  627                let project = project.clone();
  628                Some(window.spawn(cx, async move |cx| {
  629                    let project_item = project_item.await?;
  630                    let project_entry_id: Option<ProjectEntryId> =
  631                        project_item.read_with(cx, project::ProjectItem::entry_id)?;
  632                    let build_workspace_item = Box::new(
  633                        |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  634                            Box::new(cx.new(|cx| {
  635                                T::for_project_item(project, Some(pane), project_item, window, cx)
  636                            })) as Box<dyn ItemHandle>
  637                        },
  638                    ) as Box<_>;
  639                    Ok((project_entry_id, build_workspace_item))
  640                }))
  641            });
  642    }
  643
  644    fn open_path(
  645        &self,
  646        project: &Entity<Project>,
  647        path: &ProjectPath,
  648        window: &mut Window,
  649        cx: &mut App,
  650    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  651        let Some(open_project_item) = self
  652            .build_project_item_for_path_fns
  653            .iter()
  654            .rev()
  655            .find_map(|open_project_item| open_project_item(&project, &path, window, cx))
  656        else {
  657            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  658        };
  659        open_project_item
  660    }
  661
  662    fn build_item<T: project::ProjectItem>(
  663        &self,
  664        item: Entity<T>,
  665        project: Entity<Project>,
  666        pane: Option<&Pane>,
  667        window: &mut Window,
  668        cx: &mut App,
  669    ) -> Option<Box<dyn ItemHandle>> {
  670        let build = self
  671            .build_project_item_fns_by_type
  672            .get(&TypeId::of::<T>())?;
  673        Some(build(item.into_any(), project, pane, window, cx))
  674    }
  675}
  676
  677type WorkspaceItemBuilder =
  678    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  679
  680impl Global for ProjectItemRegistry {}
  681
  682/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  683/// items will get a chance to open the file, starting from the project item that
  684/// was added last.
  685pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  686    cx.default_global::<ProjectItemRegistry>().register::<I>();
  687}
  688
  689#[derive(Default)]
  690pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  691
  692struct FollowableViewDescriptor {
  693    from_state_proto: fn(
  694        Entity<Workspace>,
  695        ViewId,
  696        &mut Option<proto::view::Variant>,
  697        &mut Window,
  698        &mut App,
  699    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  700    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  701}
  702
  703impl Global for FollowableViewRegistry {}
  704
  705impl FollowableViewRegistry {
  706    pub fn register<I: FollowableItem>(cx: &mut App) {
  707        cx.default_global::<Self>().0.insert(
  708            TypeId::of::<I>(),
  709            FollowableViewDescriptor {
  710                from_state_proto: |workspace, id, state, window, cx| {
  711                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  712                        cx.foreground_executor()
  713                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  714                    })
  715                },
  716                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  717            },
  718        );
  719    }
  720
  721    pub fn from_state_proto(
  722        workspace: Entity<Workspace>,
  723        view_id: ViewId,
  724        mut state: Option<proto::view::Variant>,
  725        window: &mut Window,
  726        cx: &mut App,
  727    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  728        cx.update_default_global(|this: &mut Self, cx| {
  729            this.0.values().find_map(|descriptor| {
  730                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  731            })
  732        })
  733    }
  734
  735    pub fn to_followable_view(
  736        view: impl Into<AnyView>,
  737        cx: &App,
  738    ) -> Option<Box<dyn FollowableItemHandle>> {
  739        let this = cx.try_global::<Self>()?;
  740        let view = view.into();
  741        let descriptor = this.0.get(&view.entity_type())?;
  742        Some((descriptor.to_followable_view)(&view))
  743    }
  744}
  745
  746#[derive(Copy, Clone)]
  747struct SerializableItemDescriptor {
  748    deserialize: fn(
  749        Entity<Project>,
  750        WeakEntity<Workspace>,
  751        WorkspaceId,
  752        ItemId,
  753        &mut Window,
  754        &mut Context<Pane>,
  755    ) -> Task<Result<Box<dyn ItemHandle>>>,
  756    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  757    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  758}
  759
  760#[derive(Default)]
  761struct SerializableItemRegistry {
  762    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  763    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  764}
  765
  766impl Global for SerializableItemRegistry {}
  767
  768impl SerializableItemRegistry {
  769    fn deserialize(
  770        item_kind: &str,
  771        project: Entity<Project>,
  772        workspace: WeakEntity<Workspace>,
  773        workspace_id: WorkspaceId,
  774        item_item: ItemId,
  775        window: &mut Window,
  776        cx: &mut Context<Pane>,
  777    ) -> Task<Result<Box<dyn ItemHandle>>> {
  778        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  779            return Task::ready(Err(anyhow!(
  780                "cannot deserialize {}, descriptor not found",
  781                item_kind
  782            )));
  783        };
  784
  785        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  786    }
  787
  788    fn cleanup(
  789        item_kind: &str,
  790        workspace_id: WorkspaceId,
  791        loaded_items: Vec<ItemId>,
  792        window: &mut Window,
  793        cx: &mut App,
  794    ) -> Task<Result<()>> {
  795        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  796            return Task::ready(Err(anyhow!(
  797                "cannot cleanup {}, descriptor not found",
  798                item_kind
  799            )));
  800        };
  801
  802        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  803    }
  804
  805    fn view_to_serializable_item_handle(
  806        view: AnyView,
  807        cx: &App,
  808    ) -> Option<Box<dyn SerializableItemHandle>> {
  809        let this = cx.try_global::<Self>()?;
  810        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  811        Some((descriptor.view_to_serializable_item)(view))
  812    }
  813
  814    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  815        let this = cx.try_global::<Self>()?;
  816        this.descriptors_by_kind.get(item_kind).copied()
  817    }
  818}
  819
  820pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  821    let serialized_item_kind = I::serialized_item_kind();
  822
  823    let registry = cx.default_global::<SerializableItemRegistry>();
  824    let descriptor = SerializableItemDescriptor {
  825        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  826            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  827            cx.foreground_executor()
  828                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  829        },
  830        cleanup: |workspace_id, loaded_items, window, cx| {
  831            I::cleanup(workspace_id, loaded_items, window, cx)
  832        },
  833        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  834    };
  835    registry
  836        .descriptors_by_kind
  837        .insert(Arc::from(serialized_item_kind), descriptor);
  838    registry
  839        .descriptors_by_type
  840        .insert(TypeId::of::<I>(), descriptor);
  841}
  842
  843pub struct AppState {
  844    pub languages: Arc<LanguageRegistry>,
  845    pub client: Arc<Client>,
  846    pub user_store: Entity<UserStore>,
  847    pub workspace_store: Entity<WorkspaceStore>,
  848    pub fs: Arc<dyn fs::Fs>,
  849    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  850    pub node_runtime: NodeRuntime,
  851    pub session: Entity<AppSession>,
  852}
  853
  854struct GlobalAppState(Weak<AppState>);
  855
  856impl Global for GlobalAppState {}
  857
  858pub struct WorkspaceStore {
  859    workspaces: HashSet<WindowHandle<Workspace>>,
  860    client: Arc<Client>,
  861    _subscriptions: Vec<client::Subscription>,
  862}
  863
  864#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  865pub enum CollaboratorId {
  866    PeerId(PeerId),
  867    Agent,
  868}
  869
  870impl From<PeerId> for CollaboratorId {
  871    fn from(peer_id: PeerId) -> Self {
  872        CollaboratorId::PeerId(peer_id)
  873    }
  874}
  875
  876impl From<&PeerId> for CollaboratorId {
  877    fn from(peer_id: &PeerId) -> Self {
  878        CollaboratorId::PeerId(*peer_id)
  879    }
  880}
  881
  882#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  883struct Follower {
  884    project_id: Option<u64>,
  885    peer_id: PeerId,
  886}
  887
  888impl AppState {
  889    #[track_caller]
  890    pub fn global(cx: &App) -> Weak<Self> {
  891        cx.global::<GlobalAppState>().0.clone()
  892    }
  893    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  894        cx.try_global::<GlobalAppState>()
  895            .map(|state| state.0.clone())
  896    }
  897    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  898        cx.set_global(GlobalAppState(state));
  899    }
  900
  901    #[cfg(any(test, feature = "test-support"))]
  902    pub fn test(cx: &mut App) -> Arc<Self> {
  903        use node_runtime::NodeRuntime;
  904        use session::Session;
  905        use settings::SettingsStore;
  906
  907        if !cx.has_global::<SettingsStore>() {
  908            let settings_store = SettingsStore::test(cx);
  909            cx.set_global(settings_store);
  910        }
  911
  912        let fs = fs::FakeFs::new(cx.background_executor().clone());
  913        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  914        let clock = Arc::new(clock::FakeSystemClock::new());
  915        let http_client = http_client::FakeHttpClient::with_404_response();
  916        let client = Client::new(clock, http_client.clone(), cx);
  917        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  918        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  919        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  920
  921        theme::init(theme::LoadThemes::JustBase, cx);
  922        client::init(&client, cx);
  923        crate::init_settings(cx);
  924
  925        Arc::new(Self {
  926            client,
  927            fs,
  928            languages,
  929            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(Self::toggle_edit_predictions_all_files))
 5555            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5556                let pane = workspace.active_pane().clone();
 5557                workspace.unfollow_in_pane(&pane, window, cx);
 5558            }))
 5559            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5560                workspace
 5561                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5562                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5563            }))
 5564            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5565                workspace
 5566                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5567                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5568            }))
 5569            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5570                workspace
 5571                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5572                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5573            }))
 5574            .on_action(
 5575                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5576                    workspace.activate_previous_pane(window, cx)
 5577                }),
 5578            )
 5579            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5580                workspace.activate_next_pane(window, cx)
 5581            }))
 5582            .on_action(
 5583                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5584                    workspace.activate_next_window(cx)
 5585                }),
 5586            )
 5587            .on_action(
 5588                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5589                    workspace.activate_previous_window(cx)
 5590                }),
 5591            )
 5592            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5593                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5594            }))
 5595            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5596                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5597            }))
 5598            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5599                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5600            }))
 5601            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5602                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5603            }))
 5604            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5605                workspace.activate_next_pane(window, cx)
 5606            }))
 5607            .on_action(cx.listener(
 5608                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5609                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5610                },
 5611            ))
 5612            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5613                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5614            }))
 5615            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5616                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5617            }))
 5618            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5619                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5620            }))
 5621            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5622                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5623            }))
 5624            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5625                this.toggle_dock(DockPosition::Left, window, cx);
 5626            }))
 5627            .on_action(cx.listener(
 5628                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5629                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5630                },
 5631            ))
 5632            .on_action(cx.listener(
 5633                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5634                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5635                },
 5636            ))
 5637            .on_action(cx.listener(
 5638                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5639                    if !workspace.close_active_dock(window, cx) {
 5640                        cx.propagate();
 5641                    }
 5642                },
 5643            ))
 5644            .on_action(
 5645                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5646                    workspace.close_all_docks(window, cx);
 5647                }),
 5648            )
 5649            .on_action(cx.listener(
 5650                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5651                    workspace.clear_all_notifications(cx);
 5652                },
 5653            ))
 5654            .on_action(cx.listener(
 5655                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5656                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5657                        workspace.suppress_notification(&notification_id, cx);
 5658                    }
 5659                },
 5660            ))
 5661            .on_action(cx.listener(
 5662                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5663                    workspace.reopen_closed_item(window, cx).detach();
 5664                },
 5665            ))
 5666            .on_action(cx.listener(
 5667                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5668                    for dock in workspace.all_docks() {
 5669                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5670                            let Some(panel) = dock.read(cx).active_panel() else {
 5671                                return;
 5672                            };
 5673
 5674                            // Set to `None`, then the size will fall back to the default.
 5675                            panel.clone().set_size(None, window, cx);
 5676
 5677                            return;
 5678                        }
 5679                    }
 5680                },
 5681            ))
 5682            .on_action(cx.listener(
 5683                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5684                    for dock in workspace.all_docks() {
 5685                        if let Some(panel) = dock.read(cx).visible_panel() {
 5686                            // Set to `None`, then the size will fall back to the default.
 5687                            panel.clone().set_size(None, window, cx);
 5688                        }
 5689                    }
 5690                },
 5691            ))
 5692            .on_action(cx.listener(
 5693                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5694                    adjust_active_dock_size_by_px(
 5695                        px_with_ui_font_fallback(act.px, cx),
 5696                        workspace,
 5697                        window,
 5698                        cx,
 5699                    );
 5700                },
 5701            ))
 5702            .on_action(cx.listener(
 5703                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5704                    adjust_active_dock_size_by_px(
 5705                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5706                        workspace,
 5707                        window,
 5708                        cx,
 5709                    );
 5710                },
 5711            ))
 5712            .on_action(cx.listener(
 5713                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5714                    adjust_open_docks_size_by_px(
 5715                        px_with_ui_font_fallback(act.px, cx),
 5716                        workspace,
 5717                        window,
 5718                        cx,
 5719                    );
 5720                },
 5721            ))
 5722            .on_action(cx.listener(
 5723                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5724                    adjust_open_docks_size_by_px(
 5725                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5726                        workspace,
 5727                        window,
 5728                        cx,
 5729                    );
 5730                },
 5731            ))
 5732            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5733            .on_action(cx.listener(Workspace::cancel))
 5734    }
 5735
 5736    #[cfg(any(test, feature = "test-support"))]
 5737    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5738        use node_runtime::NodeRuntime;
 5739        use session::Session;
 5740
 5741        let client = project.read(cx).client();
 5742        let user_store = project.read(cx).user_store();
 5743        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5744        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5745        window.activate_window();
 5746        let app_state = Arc::new(AppState {
 5747            languages: project.read(cx).languages().clone(),
 5748            workspace_store,
 5749            client,
 5750            user_store,
 5751            fs: project.read(cx).fs().clone(),
 5752            build_window_options: |_, _| Default::default(),
 5753            node_runtime: NodeRuntime::unavailable(),
 5754            session,
 5755        });
 5756        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5757        workspace
 5758            .active_pane
 5759            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5760        workspace
 5761    }
 5762
 5763    pub fn register_action<A: Action>(
 5764        &mut self,
 5765        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5766    ) -> &mut Self {
 5767        let callback = Arc::new(callback);
 5768
 5769        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5770            let callback = callback.clone();
 5771            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5772                (callback)(workspace, event, window, cx)
 5773            }))
 5774        }));
 5775        self
 5776    }
 5777    pub fn register_action_renderer(
 5778        &mut self,
 5779        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5780    ) -> &mut Self {
 5781        self.workspace_actions.push(Box::new(callback));
 5782        self
 5783    }
 5784
 5785    fn add_workspace_actions_listeners(
 5786        &self,
 5787        mut div: Div,
 5788        window: &mut Window,
 5789        cx: &mut Context<Self>,
 5790    ) -> Div {
 5791        for action in self.workspace_actions.iter() {
 5792            div = (action)(div, self, window, cx)
 5793        }
 5794        div
 5795    }
 5796
 5797    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5798        self.modal_layer.read(cx).has_active_modal()
 5799    }
 5800
 5801    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5802        self.modal_layer.read(cx).active_modal()
 5803    }
 5804
 5805    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5806    where
 5807        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5808    {
 5809        self.modal_layer.update(cx, |modal_layer, cx| {
 5810            modal_layer.toggle_modal(window, cx, build)
 5811        })
 5812    }
 5813
 5814    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5815        self.toast_layer
 5816            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5817    }
 5818
 5819    pub fn toggle_centered_layout(
 5820        &mut self,
 5821        _: &ToggleCenteredLayout,
 5822        _: &mut Window,
 5823        cx: &mut Context<Self>,
 5824    ) {
 5825        self.centered_layout = !self.centered_layout;
 5826        if let Some(database_id) = self.database_id() {
 5827            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5828                .detach_and_log_err(cx);
 5829        }
 5830        cx.notify();
 5831    }
 5832
 5833    fn adjust_padding(padding: Option<f32>) -> f32 {
 5834        padding
 5835            .unwrap_or(Self::DEFAULT_PADDING)
 5836            .clamp(0.0, Self::MAX_PADDING)
 5837    }
 5838
 5839    fn render_dock(
 5840        &self,
 5841        position: DockPosition,
 5842        dock: &Entity<Dock>,
 5843        window: &mut Window,
 5844        cx: &mut App,
 5845    ) -> Option<Div> {
 5846        if self.zoomed_position == Some(position) {
 5847            return None;
 5848        }
 5849
 5850        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5851            let pane = panel.pane(cx)?;
 5852            let follower_states = &self.follower_states;
 5853            leader_border_for_pane(follower_states, &pane, window, cx)
 5854        });
 5855
 5856        Some(
 5857            div()
 5858                .flex()
 5859                .flex_none()
 5860                .overflow_hidden()
 5861                .child(dock.clone())
 5862                .children(leader_border),
 5863        )
 5864    }
 5865
 5866    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5867        window.root().flatten()
 5868    }
 5869
 5870    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5871        self.zoomed.as_ref()
 5872    }
 5873
 5874    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5875        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5876            return;
 5877        };
 5878        let windows = cx.windows();
 5879        let Some(next_window) = windows
 5880            .iter()
 5881            .cycle()
 5882            .skip_while(|window| window.window_id() != current_window_id)
 5883            .nth(1)
 5884        else {
 5885            return;
 5886        };
 5887        next_window
 5888            .update(cx, |_, window, _| window.activate_window())
 5889            .ok();
 5890    }
 5891
 5892    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5893        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5894            return;
 5895        };
 5896        let windows = cx.windows();
 5897        let Some(prev_window) = windows
 5898            .iter()
 5899            .rev()
 5900            .cycle()
 5901            .skip_while(|window| window.window_id() != current_window_id)
 5902            .nth(1)
 5903        else {
 5904            return;
 5905        };
 5906        prev_window
 5907            .update(cx, |_, window, _| window.activate_window())
 5908            .ok();
 5909    }
 5910
 5911    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5912        if cx.stop_active_drag(window) {
 5913            return;
 5914        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5915            dismiss_app_notification(&notification_id, cx);
 5916        } else {
 5917            cx.propagate();
 5918        }
 5919    }
 5920
 5921    fn adjust_dock_size_by_px(
 5922        &mut self,
 5923        panel_size: Pixels,
 5924        dock_pos: DockPosition,
 5925        px: Pixels,
 5926        window: &mut Window,
 5927        cx: &mut Context<Self>,
 5928    ) {
 5929        match dock_pos {
 5930            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5931            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5932            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5933        }
 5934    }
 5935
 5936    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5937        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5938
 5939        self.left_dock.update(cx, |left_dock, cx| {
 5940            if WorkspaceSettings::get_global(cx)
 5941                .resize_all_panels_in_dock
 5942                .contains(&DockPosition::Left)
 5943            {
 5944                left_dock.resize_all_panels(Some(size), window, cx);
 5945            } else {
 5946                left_dock.resize_active_panel(Some(size), window, cx);
 5947            }
 5948        });
 5949    }
 5950
 5951    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5952        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5953        self.left_dock.read_with(cx, |left_dock, cx| {
 5954            let left_dock_size = left_dock
 5955                .active_panel_size(window, cx)
 5956                .unwrap_or(Pixels(0.0));
 5957            if left_dock_size + size > self.bounds.right() {
 5958                size = self.bounds.right() - left_dock_size
 5959            }
 5960        });
 5961        self.right_dock.update(cx, |right_dock, cx| {
 5962            if WorkspaceSettings::get_global(cx)
 5963                .resize_all_panels_in_dock
 5964                .contains(&DockPosition::Right)
 5965            {
 5966                right_dock.resize_all_panels(Some(size), window, cx);
 5967            } else {
 5968                right_dock.resize_active_panel(Some(size), window, cx);
 5969            }
 5970        });
 5971    }
 5972
 5973    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5974        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5975        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5976            if WorkspaceSettings::get_global(cx)
 5977                .resize_all_panels_in_dock
 5978                .contains(&DockPosition::Bottom)
 5979            {
 5980                bottom_dock.resize_all_panels(Some(size), window, cx);
 5981            } else {
 5982                bottom_dock.resize_active_panel(Some(size), window, cx);
 5983            }
 5984        });
 5985    }
 5986
 5987    fn toggle_edit_predictions_all_files(
 5988        &mut self,
 5989        _: &ToggleEditPrediction,
 5990        _window: &mut Window,
 5991        cx: &mut Context<Self>,
 5992    ) {
 5993        let fs = self.project().read(cx).fs().clone();
 5994        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 5995        update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
 5996            file.defaults.show_edit_predictions = Some(!show_edit_predictions)
 5997        });
 5998    }
 5999}
 6000
 6001fn leader_border_for_pane(
 6002    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6003    pane: &Entity<Pane>,
 6004    _: &Window,
 6005    cx: &App,
 6006) -> Option<Div> {
 6007    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6008        if state.pane() == pane {
 6009            Some((*leader_id, state))
 6010        } else {
 6011            None
 6012        }
 6013    })?;
 6014
 6015    let mut leader_color = match leader_id {
 6016        CollaboratorId::PeerId(leader_peer_id) => {
 6017            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6018            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6019
 6020            cx.theme()
 6021                .players()
 6022                .color_for_participant(leader.participant_index.0)
 6023                .cursor
 6024        }
 6025        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6026    };
 6027    leader_color.fade_out(0.3);
 6028    Some(
 6029        div()
 6030            .absolute()
 6031            .size_full()
 6032            .left_0()
 6033            .top_0()
 6034            .border_2()
 6035            .border_color(leader_color),
 6036    )
 6037}
 6038
 6039fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6040    ZED_WINDOW_POSITION
 6041        .zip(*ZED_WINDOW_SIZE)
 6042        .map(|(position, size)| Bounds {
 6043            origin: position,
 6044            size,
 6045        })
 6046}
 6047
 6048fn open_items(
 6049    serialized_workspace: Option<SerializedWorkspace>,
 6050    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6051    window: &mut Window,
 6052    cx: &mut Context<Workspace>,
 6053) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6054    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6055        Workspace::load_workspace(
 6056            serialized_workspace,
 6057            project_paths_to_open
 6058                .iter()
 6059                .map(|(_, project_path)| project_path)
 6060                .cloned()
 6061                .collect(),
 6062            window,
 6063            cx,
 6064        )
 6065    });
 6066
 6067    cx.spawn_in(window, async move |workspace, cx| {
 6068        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6069
 6070        if let Some(restored_items) = restored_items {
 6071            let restored_items = restored_items.await?;
 6072
 6073            let restored_project_paths = restored_items
 6074                .iter()
 6075                .filter_map(|item| {
 6076                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6077                        .ok()
 6078                        .flatten()
 6079                })
 6080                .collect::<HashSet<_>>();
 6081
 6082            for restored_item in restored_items {
 6083                opened_items.push(restored_item.map(Ok));
 6084            }
 6085
 6086            project_paths_to_open
 6087                .iter_mut()
 6088                .for_each(|(_, project_path)| {
 6089                    if let Some(project_path_to_open) = project_path {
 6090                        if restored_project_paths.contains(project_path_to_open) {
 6091                            *project_path = None;
 6092                        }
 6093                    }
 6094                });
 6095        } else {
 6096            for _ in 0..project_paths_to_open.len() {
 6097                opened_items.push(None);
 6098            }
 6099        }
 6100        assert!(opened_items.len() == project_paths_to_open.len());
 6101
 6102        let tasks =
 6103            project_paths_to_open
 6104                .into_iter()
 6105                .enumerate()
 6106                .map(|(ix, (abs_path, project_path))| {
 6107                    let workspace = workspace.clone();
 6108                    cx.spawn(async move |cx| {
 6109                        let file_project_path = project_path?;
 6110                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6111                            workspace.project().update(cx, |project, cx| {
 6112                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6113                            })
 6114                        });
 6115
 6116                        // We only want to open file paths here. If one of the items
 6117                        // here is a directory, it was already opened further above
 6118                        // with a `find_or_create_worktree`.
 6119                        if let Ok(task) = abs_path_task {
 6120                            if task.await.map_or(true, |p| p.is_file()) {
 6121                                return Some((
 6122                                    ix,
 6123                                    workspace
 6124                                        .update_in(cx, |workspace, window, cx| {
 6125                                            workspace.open_path(
 6126                                                file_project_path,
 6127                                                None,
 6128                                                true,
 6129                                                window,
 6130                                                cx,
 6131                                            )
 6132                                        })
 6133                                        .log_err()?
 6134                                        .await,
 6135                                ));
 6136                            }
 6137                        }
 6138                        None
 6139                    })
 6140                });
 6141
 6142        let tasks = tasks.collect::<Vec<_>>();
 6143
 6144        let tasks = futures::future::join_all(tasks);
 6145        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6146            opened_items[ix] = Some(path_open_result);
 6147        }
 6148
 6149        Ok(opened_items)
 6150    })
 6151}
 6152
 6153enum ActivateInDirectionTarget {
 6154    Pane(Entity<Pane>),
 6155    Dock(Entity<Dock>),
 6156}
 6157
 6158fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6159    workspace
 6160        .update(cx, |workspace, _, cx| {
 6161            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6162                struct DatabaseFailedNotification;
 6163
 6164                workspace.show_notification(
 6165                    NotificationId::unique::<DatabaseFailedNotification>(),
 6166                    cx,
 6167                    |cx| {
 6168                        cx.new(|cx| {
 6169                            MessageNotification::new("Failed to load the database file.", cx)
 6170                                .primary_message("File an Issue")
 6171                                .primary_icon(IconName::Plus)
 6172                                .primary_on_click(|window, cx| {
 6173                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6174                                })
 6175                        })
 6176                    },
 6177                );
 6178            }
 6179        })
 6180        .log_err();
 6181}
 6182
 6183fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6184    if val == 0 {
 6185        ThemeSettings::get_global(cx).ui_font_size(cx)
 6186    } else {
 6187        px(val as f32)
 6188    }
 6189}
 6190
 6191fn adjust_active_dock_size_by_px(
 6192    px: Pixels,
 6193    workspace: &mut Workspace,
 6194    window: &mut Window,
 6195    cx: &mut Context<Workspace>,
 6196) {
 6197    let Some(active_dock) = workspace
 6198        .all_docks()
 6199        .into_iter()
 6200        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6201    else {
 6202        return;
 6203    };
 6204    let dock = active_dock.read(cx);
 6205    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6206        return;
 6207    };
 6208    let dock_pos = dock.position();
 6209    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6210}
 6211
 6212fn adjust_open_docks_size_by_px(
 6213    px: Pixels,
 6214    workspace: &mut Workspace,
 6215    window: &mut Window,
 6216    cx: &mut Context<Workspace>,
 6217) {
 6218    let docks = workspace
 6219        .all_docks()
 6220        .into_iter()
 6221        .filter_map(|dock| {
 6222            if dock.read(cx).is_open() {
 6223                let dock = dock.read(cx);
 6224                let panel_size = dock.active_panel_size(window, cx)?;
 6225                let dock_pos = dock.position();
 6226                Some((panel_size, dock_pos, px))
 6227            } else {
 6228                None
 6229            }
 6230        })
 6231        .collect::<Vec<_>>();
 6232
 6233    docks
 6234        .into_iter()
 6235        .for_each(|(panel_size, dock_pos, offset)| {
 6236            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6237        });
 6238}
 6239
 6240impl Focusable for Workspace {
 6241    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6242        self.active_pane.focus_handle(cx)
 6243    }
 6244}
 6245
 6246#[derive(Clone)]
 6247struct DraggedDock(DockPosition);
 6248
 6249impl Render for DraggedDock {
 6250    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6251        gpui::Empty
 6252    }
 6253}
 6254
 6255impl Render for Workspace {
 6256    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6257        let mut context = KeyContext::new_with_defaults();
 6258        context.add("Workspace");
 6259        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6260        if let Some(status) = self
 6261            .debugger_provider
 6262            .as_ref()
 6263            .and_then(|provider| provider.active_thread_state(cx))
 6264        {
 6265            match status {
 6266                ThreadStatus::Running | ThreadStatus::Stepping => {
 6267                    context.add("debugger_running");
 6268                }
 6269                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6270                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6271            }
 6272        }
 6273
 6274        let centered_layout = self.centered_layout
 6275            && self.center.panes().len() == 1
 6276            && self.active_item(cx).is_some();
 6277        let render_padding = |size| {
 6278            (size > 0.0).then(|| {
 6279                div()
 6280                    .h_full()
 6281                    .w(relative(size))
 6282                    .bg(cx.theme().colors().editor_background)
 6283                    .border_color(cx.theme().colors().pane_group_border)
 6284            })
 6285        };
 6286        let paddings = if centered_layout {
 6287            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6288            (
 6289                render_padding(Self::adjust_padding(settings.left_padding)),
 6290                render_padding(Self::adjust_padding(settings.right_padding)),
 6291            )
 6292        } else {
 6293            (None, None)
 6294        };
 6295        let ui_font = theme::setup_ui_font(window, cx);
 6296
 6297        let theme = cx.theme().clone();
 6298        let colors = theme.colors();
 6299        let notification_entities = self
 6300            .notifications
 6301            .iter()
 6302            .map(|(_, notification)| notification.entity_id())
 6303            .collect::<Vec<_>>();
 6304        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6305
 6306        client_side_decorations(
 6307            self.actions(div(), window, cx)
 6308                .key_context(context)
 6309                .relative()
 6310                .size_full()
 6311                .flex()
 6312                .flex_col()
 6313                .font(ui_font)
 6314                .gap_0()
 6315                .justify_start()
 6316                .items_start()
 6317                .text_color(colors.text)
 6318                .overflow_hidden()
 6319                .children(self.titlebar_item.clone())
 6320                .on_modifiers_changed(move |_, _, cx| {
 6321                    for &id in &notification_entities {
 6322                        cx.notify(id);
 6323                    }
 6324                })
 6325                .child(
 6326                    div()
 6327                        .size_full()
 6328                        .relative()
 6329                        .flex_1()
 6330                        .flex()
 6331                        .flex_col()
 6332                        .child(
 6333                            div()
 6334                                .id("workspace")
 6335                                .bg(colors.background)
 6336                                .relative()
 6337                                .flex_1()
 6338                                .w_full()
 6339                                .flex()
 6340                                .flex_col()
 6341                                .overflow_hidden()
 6342                                .border_t_1()
 6343                                .border_b_1()
 6344                                .border_color(colors.border)
 6345                                .child({
 6346                                    let this = cx.entity().clone();
 6347                                    canvas(
 6348                                        move |bounds, window, cx| {
 6349                                            this.update(cx, |this, cx| {
 6350                                                let bounds_changed = this.bounds != bounds;
 6351                                                this.bounds = bounds;
 6352
 6353                                                if bounds_changed {
 6354                                                    this.left_dock.update(cx, |dock, cx| {
 6355                                                        dock.clamp_panel_size(
 6356                                                            bounds.size.width,
 6357                                                            window,
 6358                                                            cx,
 6359                                                        )
 6360                                                    });
 6361
 6362                                                    this.right_dock.update(cx, |dock, cx| {
 6363                                                        dock.clamp_panel_size(
 6364                                                            bounds.size.width,
 6365                                                            window,
 6366                                                            cx,
 6367                                                        )
 6368                                                    });
 6369
 6370                                                    this.bottom_dock.update(cx, |dock, cx| {
 6371                                                        dock.clamp_panel_size(
 6372                                                            bounds.size.height,
 6373                                                            window,
 6374                                                            cx,
 6375                                                        )
 6376                                                    });
 6377                                                }
 6378                                            })
 6379                                        },
 6380                                        |_, _, _, _| {},
 6381                                    )
 6382                                    .absolute()
 6383                                    .size_full()
 6384                                })
 6385                                .when(self.zoomed.is_none(), |this| {
 6386                                    this.on_drag_move(cx.listener(
 6387                                        move |workspace,
 6388                                              e: &DragMoveEvent<DraggedDock>,
 6389                                              window,
 6390                                              cx| {
 6391                                            if workspace.previous_dock_drag_coordinates
 6392                                                != Some(e.event.position)
 6393                                            {
 6394                                                workspace.previous_dock_drag_coordinates =
 6395                                                    Some(e.event.position);
 6396                                                match e.drag(cx).0 {
 6397                                                    DockPosition::Left => {
 6398                                                        workspace.resize_left_dock(
 6399                                                            e.event.position.x
 6400                                                                - workspace.bounds.left(),
 6401                                                            window,
 6402                                                            cx,
 6403                                                        );
 6404                                                    }
 6405                                                    DockPosition::Right => {
 6406                                                        workspace.resize_right_dock(
 6407                                                            workspace.bounds.right()
 6408                                                                - e.event.position.x,
 6409                                                            window,
 6410                                                            cx,
 6411                                                        );
 6412                                                    }
 6413                                                    DockPosition::Bottom => {
 6414                                                        workspace.resize_bottom_dock(
 6415                                                            workspace.bounds.bottom()
 6416                                                                - e.event.position.y,
 6417                                                            window,
 6418                                                            cx,
 6419                                                        );
 6420                                                    }
 6421                                                };
 6422                                                workspace.serialize_workspace(window, cx);
 6423                                            }
 6424                                        },
 6425                                    ))
 6426                                })
 6427                                .child({
 6428                                    match bottom_dock_layout {
 6429                                        BottomDockLayout::Full => div()
 6430                                            .flex()
 6431                                            .flex_col()
 6432                                            .h_full()
 6433                                            .child(
 6434                                                div()
 6435                                                    .flex()
 6436                                                    .flex_row()
 6437                                                    .flex_1()
 6438                                                    .overflow_hidden()
 6439                                                    .children(self.render_dock(
 6440                                                        DockPosition::Left,
 6441                                                        &self.left_dock,
 6442                                                        window,
 6443                                                        cx,
 6444                                                    ))
 6445                                                    .child(
 6446                                                        div()
 6447                                                            .flex()
 6448                                                            .flex_col()
 6449                                                            .flex_1()
 6450                                                            .overflow_hidden()
 6451                                                            .child(
 6452                                                                h_flex()
 6453                                                                    .flex_1()
 6454                                                                    .when_some(
 6455                                                                        paddings.0,
 6456                                                                        |this, p| {
 6457                                                                            this.child(
 6458                                                                                p.border_r_1(),
 6459                                                                            )
 6460                                                                        },
 6461                                                                    )
 6462                                                                    .child(self.center.render(
 6463                                                                        self.zoomed.as_ref(),
 6464                                                                        &PaneRenderContext {
 6465                                                                            follower_states:
 6466                                                                                &self.follower_states,
 6467                                                                            active_call: self.active_call(),
 6468                                                                            active_pane: &self.active_pane,
 6469                                                                            app_state: &self.app_state,
 6470                                                                            project: &self.project,
 6471                                                                            workspace: &self.weak_self,
 6472                                                                        },
 6473                                                                        window,
 6474                                                                        cx,
 6475                                                                    ))
 6476                                                                    .when_some(
 6477                                                                        paddings.1,
 6478                                                                        |this, p| {
 6479                                                                            this.child(
 6480                                                                                p.border_l_1(),
 6481                                                                            )
 6482                                                                        },
 6483                                                                    ),
 6484                                                            ),
 6485                                                    )
 6486                                                    .children(self.render_dock(
 6487                                                        DockPosition::Right,
 6488                                                        &self.right_dock,
 6489                                                        window,
 6490                                                        cx,
 6491                                                    )),
 6492                                            )
 6493                                            .child(div().w_full().children(self.render_dock(
 6494                                                DockPosition::Bottom,
 6495                                                &self.bottom_dock,
 6496                                                window,
 6497                                                cx
 6498                                            ))),
 6499
 6500                                        BottomDockLayout::LeftAligned => div()
 6501                                            .flex()
 6502                                            .flex_row()
 6503                                            .h_full()
 6504                                            .child(
 6505                                                div()
 6506                                                    .flex()
 6507                                                    .flex_col()
 6508                                                    .flex_1()
 6509                                                    .h_full()
 6510                                                    .child(
 6511                                                        div()
 6512                                                            .flex()
 6513                                                            .flex_row()
 6514                                                            .flex_1()
 6515                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6516                                                            .child(
 6517                                                                div()
 6518                                                                    .flex()
 6519                                                                    .flex_col()
 6520                                                                    .flex_1()
 6521                                                                    .overflow_hidden()
 6522                                                                    .child(
 6523                                                                        h_flex()
 6524                                                                            .flex_1()
 6525                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6526                                                                            .child(self.center.render(
 6527                                                                                self.zoomed.as_ref(),
 6528                                                                                &PaneRenderContext {
 6529                                                                                    follower_states:
 6530                                                                                        &self.follower_states,
 6531                                                                                    active_call: self.active_call(),
 6532                                                                                    active_pane: &self.active_pane,
 6533                                                                                    app_state: &self.app_state,
 6534                                                                                    project: &self.project,
 6535                                                                                    workspace: &self.weak_self,
 6536                                                                                },
 6537                                                                                window,
 6538                                                                                cx,
 6539                                                                            ))
 6540                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6541                                                                    )
 6542                                                            )
 6543                                                    )
 6544                                                    .child(
 6545                                                        div()
 6546                                                            .w_full()
 6547                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6548                                                    ),
 6549                                            )
 6550                                            .children(self.render_dock(
 6551                                                DockPosition::Right,
 6552                                                &self.right_dock,
 6553                                                window,
 6554                                                cx,
 6555                                            )),
 6556
 6557                                        BottomDockLayout::RightAligned => div()
 6558                                            .flex()
 6559                                            .flex_row()
 6560                                            .h_full()
 6561                                            .children(self.render_dock(
 6562                                                DockPosition::Left,
 6563                                                &self.left_dock,
 6564                                                window,
 6565                                                cx,
 6566                                            ))
 6567                                            .child(
 6568                                                div()
 6569                                                    .flex()
 6570                                                    .flex_col()
 6571                                                    .flex_1()
 6572                                                    .h_full()
 6573                                                    .child(
 6574                                                        div()
 6575                                                            .flex()
 6576                                                            .flex_row()
 6577                                                            .flex_1()
 6578                                                            .child(
 6579                                                                div()
 6580                                                                    .flex()
 6581                                                                    .flex_col()
 6582                                                                    .flex_1()
 6583                                                                    .overflow_hidden()
 6584                                                                    .child(
 6585                                                                        h_flex()
 6586                                                                            .flex_1()
 6587                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6588                                                                            .child(self.center.render(
 6589                                                                                self.zoomed.as_ref(),
 6590                                                                                &PaneRenderContext {
 6591                                                                                    follower_states:
 6592                                                                                        &self.follower_states,
 6593                                                                                    active_call: self.active_call(),
 6594                                                                                    active_pane: &self.active_pane,
 6595                                                                                    app_state: &self.app_state,
 6596                                                                                    project: &self.project,
 6597                                                                                    workspace: &self.weak_self,
 6598                                                                                },
 6599                                                                                window,
 6600                                                                                cx,
 6601                                                                            ))
 6602                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6603                                                                    )
 6604                                                            )
 6605                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6606                                                    )
 6607                                                    .child(
 6608                                                        div()
 6609                                                            .w_full()
 6610                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6611                                                    ),
 6612                                            ),
 6613
 6614                                        BottomDockLayout::Contained => div()
 6615                                            .flex()
 6616                                            .flex_row()
 6617                                            .h_full()
 6618                                            .children(self.render_dock(
 6619                                                DockPosition::Left,
 6620                                                &self.left_dock,
 6621                                                window,
 6622                                                cx,
 6623                                            ))
 6624                                            .child(
 6625                                                div()
 6626                                                    .flex()
 6627                                                    .flex_col()
 6628                                                    .flex_1()
 6629                                                    .overflow_hidden()
 6630                                                    .child(
 6631                                                        h_flex()
 6632                                                            .flex_1()
 6633                                                            .when_some(paddings.0, |this, p| {
 6634                                                                this.child(p.border_r_1())
 6635                                                            })
 6636                                                            .child(self.center.render(
 6637                                                                self.zoomed.as_ref(),
 6638                                                                &PaneRenderContext {
 6639                                                                    follower_states:
 6640                                                                        &self.follower_states,
 6641                                                                    active_call: self.active_call(),
 6642                                                                    active_pane: &self.active_pane,
 6643                                                                    app_state: &self.app_state,
 6644                                                                    project: &self.project,
 6645                                                                    workspace: &self.weak_self,
 6646                                                                },
 6647                                                                window,
 6648                                                                cx,
 6649                                                            ))
 6650                                                            .when_some(paddings.1, |this, p| {
 6651                                                                this.child(p.border_l_1())
 6652                                                            }),
 6653                                                    )
 6654                                                    .children(self.render_dock(
 6655                                                        DockPosition::Bottom,
 6656                                                        &self.bottom_dock,
 6657                                                        window,
 6658                                                        cx,
 6659                                                    )),
 6660                                            )
 6661                                            .children(self.render_dock(
 6662                                                DockPosition::Right,
 6663                                                &self.right_dock,
 6664                                                window,
 6665                                                cx,
 6666                                            )),
 6667                                    }
 6668                                })
 6669                                .children(self.zoomed.as_ref().and_then(|view| {
 6670                                    let zoomed_view = view.upgrade()?;
 6671                                    let div = div()
 6672                                        .occlude()
 6673                                        .absolute()
 6674                                        .overflow_hidden()
 6675                                        .border_color(colors.border)
 6676                                        .bg(colors.background)
 6677                                        .child(zoomed_view)
 6678                                        .inset_0()
 6679                                        .shadow_lg();
 6680
 6681                                    Some(match self.zoomed_position {
 6682                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6683                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6684                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6685                                        None => {
 6686                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6687                                        }
 6688                                    })
 6689                                }))
 6690                                .children(self.render_notifications(window, cx)),
 6691                        )
 6692                        .child(self.status_bar.clone())
 6693                        .child(self.modal_layer.clone())
 6694                        .child(self.toast_layer.clone()),
 6695                ),
 6696            window,
 6697            cx,
 6698        )
 6699    }
 6700}
 6701
 6702impl WorkspaceStore {
 6703    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6704        Self {
 6705            workspaces: Default::default(),
 6706            _subscriptions: vec![
 6707                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6708                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6709            ],
 6710            client,
 6711        }
 6712    }
 6713
 6714    pub fn update_followers(
 6715        &self,
 6716        project_id: Option<u64>,
 6717        update: proto::update_followers::Variant,
 6718        cx: &App,
 6719    ) -> Option<()> {
 6720        let active_call = ActiveCall::try_global(cx)?;
 6721        let room_id = active_call.read(cx).room()?.read(cx).id();
 6722        self.client
 6723            .send(proto::UpdateFollowers {
 6724                room_id,
 6725                project_id,
 6726                variant: Some(update),
 6727            })
 6728            .log_err()
 6729    }
 6730
 6731    pub async fn handle_follow(
 6732        this: Entity<Self>,
 6733        envelope: TypedEnvelope<proto::Follow>,
 6734        mut cx: AsyncApp,
 6735    ) -> Result<proto::FollowResponse> {
 6736        this.update(&mut cx, |this, cx| {
 6737            let follower = Follower {
 6738                project_id: envelope.payload.project_id,
 6739                peer_id: envelope.original_sender_id()?,
 6740            };
 6741
 6742            let mut response = proto::FollowResponse::default();
 6743            this.workspaces.retain(|workspace| {
 6744                workspace
 6745                    .update(cx, |workspace, window, cx| {
 6746                        let handler_response =
 6747                            workspace.handle_follow(follower.project_id, window, cx);
 6748                        if let Some(active_view) = handler_response.active_view.clone() {
 6749                            if workspace.project.read(cx).remote_id() == follower.project_id {
 6750                                response.active_view = Some(active_view)
 6751                            }
 6752                        }
 6753                    })
 6754                    .is_ok()
 6755            });
 6756
 6757            Ok(response)
 6758        })?
 6759    }
 6760
 6761    async fn handle_update_followers(
 6762        this: Entity<Self>,
 6763        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6764        mut cx: AsyncApp,
 6765    ) -> Result<()> {
 6766        let leader_id = envelope.original_sender_id()?;
 6767        let update = envelope.payload;
 6768
 6769        this.update(&mut cx, |this, cx| {
 6770            this.workspaces.retain(|workspace| {
 6771                workspace
 6772                    .update(cx, |workspace, window, cx| {
 6773                        let project_id = workspace.project.read(cx).remote_id();
 6774                        if update.project_id != project_id && update.project_id.is_some() {
 6775                            return;
 6776                        }
 6777                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6778                    })
 6779                    .is_ok()
 6780            });
 6781            Ok(())
 6782        })?
 6783    }
 6784
 6785    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6786        &self.workspaces
 6787    }
 6788}
 6789
 6790impl ViewId {
 6791    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6792        Ok(Self {
 6793            creator: message
 6794                .creator
 6795                .map(CollaboratorId::PeerId)
 6796                .context("creator is missing")?,
 6797            id: message.id,
 6798        })
 6799    }
 6800
 6801    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6802        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6803            Some(proto::ViewId {
 6804                creator: Some(peer_id),
 6805                id: self.id,
 6806            })
 6807        } else {
 6808            None
 6809        }
 6810    }
 6811}
 6812
 6813impl FollowerState {
 6814    fn pane(&self) -> &Entity<Pane> {
 6815        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6816    }
 6817}
 6818
 6819pub trait WorkspaceHandle {
 6820    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6821}
 6822
 6823impl WorkspaceHandle for Entity<Workspace> {
 6824    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6825        self.read(cx)
 6826            .worktrees(cx)
 6827            .flat_map(|worktree| {
 6828                let worktree_id = worktree.read(cx).id();
 6829                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6830                    worktree_id,
 6831                    path: f.path.clone(),
 6832                })
 6833            })
 6834            .collect::<Vec<_>>()
 6835    }
 6836}
 6837
 6838impl std::fmt::Debug for OpenPaths {
 6839    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 6840        f.debug_struct("OpenPaths")
 6841            .field("paths", &self.paths)
 6842            .finish()
 6843    }
 6844}
 6845
 6846pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6847    DB.last_workspace().await.log_err().flatten()
 6848}
 6849
 6850pub fn last_session_workspace_locations(
 6851    last_session_id: &str,
 6852    last_session_window_stack: Option<Vec<WindowId>>,
 6853) -> Option<Vec<SerializedWorkspaceLocation>> {
 6854    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6855        .log_err()
 6856}
 6857
 6858actions!(
 6859    collab,
 6860    [
 6861        /// Opens the channel notes for the current call.
 6862        ///
 6863        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6864        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6865        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6866        OpenChannelNotes,
 6867        /// Mutes your microphone.
 6868        Mute,
 6869        /// Deafens yourself (mute both microphone and speakers).
 6870        Deafen,
 6871        /// Leaves the current call.
 6872        LeaveCall,
 6873        /// Shares the current project with collaborators.
 6874        ShareProject,
 6875        /// Shares your screen with collaborators.
 6876        ScreenShare
 6877    ]
 6878);
 6879actions!(
 6880    zed,
 6881    [
 6882        /// Opens the Zed log file.
 6883        OpenLog
 6884    ]
 6885);
 6886
 6887async fn join_channel_internal(
 6888    channel_id: ChannelId,
 6889    app_state: &Arc<AppState>,
 6890    requesting_window: Option<WindowHandle<Workspace>>,
 6891    active_call: &Entity<ActiveCall>,
 6892    cx: &mut AsyncApp,
 6893) -> Result<bool> {
 6894    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6895        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6896            return (false, None);
 6897        };
 6898
 6899        let already_in_channel = room.channel_id() == Some(channel_id);
 6900        let should_prompt = room.is_sharing_project()
 6901            && !room.remote_participants().is_empty()
 6902            && !already_in_channel;
 6903        let open_room = if already_in_channel {
 6904            active_call.room().cloned()
 6905        } else {
 6906            None
 6907        };
 6908        (should_prompt, open_room)
 6909    })?;
 6910
 6911    if let Some(room) = open_room {
 6912        let task = room.update(cx, |room, cx| {
 6913            if let Some((project, host)) = room.most_active_project(cx) {
 6914                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6915            }
 6916
 6917            None
 6918        })?;
 6919        if let Some(task) = task {
 6920            task.await?;
 6921        }
 6922        return anyhow::Ok(true);
 6923    }
 6924
 6925    if should_prompt {
 6926        if let Some(workspace) = requesting_window {
 6927            let answer = workspace
 6928                .update(cx, |_, window, cx| {
 6929                    window.prompt(
 6930                        PromptLevel::Warning,
 6931                        "Do you want to switch channels?",
 6932                        Some("Leaving this call will unshare your current project."),
 6933                        &["Yes, Join Channel", "Cancel"],
 6934                        cx,
 6935                    )
 6936                })?
 6937                .await;
 6938
 6939            if answer == Ok(1) {
 6940                return Ok(false);
 6941            }
 6942        } else {
 6943            return Ok(false); // unreachable!() hopefully
 6944        }
 6945    }
 6946
 6947    let client = cx.update(|cx| active_call.read(cx).client())?;
 6948
 6949    let mut client_status = client.status();
 6950
 6951    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6952    'outer: loop {
 6953        let Some(status) = client_status.recv().await else {
 6954            anyhow::bail!("error connecting");
 6955        };
 6956
 6957        match status {
 6958            Status::Connecting
 6959            | Status::Authenticating
 6960            | Status::Authenticated
 6961            | Status::Reconnecting
 6962            | Status::Reauthenticating => continue,
 6963            Status::Connected { .. } => break 'outer,
 6964            Status::SignedOut | Status::AuthenticationError => {
 6965                return Err(ErrorCode::SignedOut.into());
 6966            }
 6967            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6968            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6969                return Err(ErrorCode::Disconnected.into());
 6970            }
 6971        }
 6972    }
 6973
 6974    let room = active_call
 6975        .update(cx, |active_call, cx| {
 6976            active_call.join_channel(channel_id, cx)
 6977        })?
 6978        .await?;
 6979
 6980    let Some(room) = room else {
 6981        return anyhow::Ok(true);
 6982    };
 6983
 6984    room.update(cx, |room, _| room.room_update_completed())?
 6985        .await;
 6986
 6987    let task = room.update(cx, |room, cx| {
 6988        if let Some((project, host)) = room.most_active_project(cx) {
 6989            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6990        }
 6991
 6992        // If you are the first to join a channel, see if you should share your project.
 6993        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
 6994            if let Some(workspace) = requesting_window {
 6995                let project = workspace.update(cx, |workspace, _, cx| {
 6996                    let project = workspace.project.read(cx);
 6997
 6998                    if !CallSettings::get_global(cx).share_on_join {
 6999                        return None;
 7000                    }
 7001
 7002                    if (project.is_local() || project.is_via_ssh())
 7003                        && project.visible_worktrees(cx).any(|tree| {
 7004                            tree.read(cx)
 7005                                .root_entry()
 7006                                .map_or(false, |entry| entry.is_dir())
 7007                        })
 7008                    {
 7009                        Some(workspace.project.clone())
 7010                    } else {
 7011                        None
 7012                    }
 7013                });
 7014                if let Ok(Some(project)) = project {
 7015                    return Some(cx.spawn(async move |room, cx| {
 7016                        room.update(cx, |room, cx| room.share_project(project, cx))?
 7017                            .await?;
 7018                        Ok(())
 7019                    }));
 7020                }
 7021            }
 7022        }
 7023
 7024        None
 7025    })?;
 7026    if let Some(task) = task {
 7027        task.await?;
 7028        return anyhow::Ok(true);
 7029    }
 7030    anyhow::Ok(false)
 7031}
 7032
 7033pub fn join_channel(
 7034    channel_id: ChannelId,
 7035    app_state: Arc<AppState>,
 7036    requesting_window: Option<WindowHandle<Workspace>>,
 7037    cx: &mut App,
 7038) -> Task<Result<()>> {
 7039    let active_call = ActiveCall::global(cx);
 7040    cx.spawn(async move |cx| {
 7041        let result = join_channel_internal(
 7042            channel_id,
 7043            &app_state,
 7044            requesting_window,
 7045            &active_call,
 7046             cx,
 7047        )
 7048            .await;
 7049
 7050        // join channel succeeded, and opened a window
 7051        if matches!(result, Ok(true)) {
 7052            return anyhow::Ok(());
 7053        }
 7054
 7055        // find an existing workspace to focus and show call controls
 7056        let mut active_window =
 7057            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7058        if active_window.is_none() {
 7059            // no open workspaces, make one to show the error in (blergh)
 7060            let (window_handle, _) = cx
 7061                .update(|cx| {
 7062                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7063                })?
 7064                .await?;
 7065
 7066            if result.is_ok() {
 7067                cx.update(|cx| {
 7068                    cx.dispatch_action(&OpenChannelNotes);
 7069                }).log_err();
 7070            }
 7071
 7072            active_window = Some(window_handle);
 7073        }
 7074
 7075        if let Err(err) = result {
 7076            log::error!("failed to join channel: {}", err);
 7077            if let Some(active_window) = active_window {
 7078                active_window
 7079                    .update(cx, |_, window, cx| {
 7080                        let detail: SharedString = match err.error_code() {
 7081                            ErrorCode::SignedOut => {
 7082                                "Please sign in to continue.".into()
 7083                            }
 7084                            ErrorCode::UpgradeRequired => {
 7085                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7086                            }
 7087                            ErrorCode::NoSuchChannel => {
 7088                                "No matching channel was found. Please check the link and try again.".into()
 7089                            }
 7090                            ErrorCode::Forbidden => {
 7091                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7092                            }
 7093                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7094                            _ => format!("{}\n\nPlease try again.", err).into(),
 7095                        };
 7096                        window.prompt(
 7097                            PromptLevel::Critical,
 7098                            "Failed to join channel",
 7099                            Some(&detail),
 7100                            &["Ok"],
 7101                        cx)
 7102                    })?
 7103                    .await
 7104                    .ok();
 7105            }
 7106        }
 7107
 7108        // return ok, we showed the error to the user.
 7109        anyhow::Ok(())
 7110    })
 7111}
 7112
 7113pub async fn get_any_active_workspace(
 7114    app_state: Arc<AppState>,
 7115    mut cx: AsyncApp,
 7116) -> anyhow::Result<WindowHandle<Workspace>> {
 7117    // find an existing workspace to focus and show call controls
 7118    let active_window = activate_any_workspace_window(&mut cx);
 7119    if active_window.is_none() {
 7120        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7121            .await?;
 7122    }
 7123    activate_any_workspace_window(&mut cx).context("could not open zed")
 7124}
 7125
 7126fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7127    cx.update(|cx| {
 7128        if let Some(workspace_window) = cx
 7129            .active_window()
 7130            .and_then(|window| window.downcast::<Workspace>())
 7131        {
 7132            return Some(workspace_window);
 7133        }
 7134
 7135        for window in cx.windows() {
 7136            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7137                workspace_window
 7138                    .update(cx, |_, window, _| window.activate_window())
 7139                    .ok();
 7140                return Some(workspace_window);
 7141            }
 7142        }
 7143        None
 7144    })
 7145    .ok()
 7146    .flatten()
 7147}
 7148
 7149pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7150    cx.windows()
 7151        .into_iter()
 7152        .filter_map(|window| window.downcast::<Workspace>())
 7153        .filter(|workspace| {
 7154            workspace
 7155                .read(cx)
 7156                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7157        })
 7158        .collect()
 7159}
 7160
 7161#[derive(Default)]
 7162pub struct OpenOptions {
 7163    pub visible: Option<OpenVisible>,
 7164    pub focus: Option<bool>,
 7165    pub open_new_workspace: Option<bool>,
 7166    pub replace_window: Option<WindowHandle<Workspace>>,
 7167    pub env: Option<HashMap<String, String>>,
 7168}
 7169
 7170#[allow(clippy::type_complexity)]
 7171pub fn open_paths(
 7172    abs_paths: &[PathBuf],
 7173    app_state: Arc<AppState>,
 7174    open_options: OpenOptions,
 7175    cx: &mut App,
 7176) -> Task<
 7177    anyhow::Result<(
 7178        WindowHandle<Workspace>,
 7179        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7180    )>,
 7181> {
 7182    let abs_paths = abs_paths.to_vec();
 7183    let mut existing = None;
 7184    let mut best_match = None;
 7185    let mut open_visible = OpenVisible::All;
 7186
 7187    cx.spawn(async move |cx| {
 7188        if open_options.open_new_workspace != Some(true) {
 7189            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7190            let all_metadatas = futures::future::join_all(all_paths)
 7191                .await
 7192                .into_iter()
 7193                .filter_map(|result| result.ok().flatten())
 7194                .collect::<Vec<_>>();
 7195
 7196            cx.update(|cx| {
 7197                for window in local_workspace_windows(&cx) {
 7198                    if let Ok(workspace) = window.read(&cx) {
 7199                        let m = workspace.project.read(&cx).visibility_for_paths(
 7200                            &abs_paths,
 7201                            &all_metadatas,
 7202                            open_options.open_new_workspace == None,
 7203                            cx,
 7204                        );
 7205                        if m > best_match {
 7206                            existing = Some(window);
 7207                            best_match = m;
 7208                        } else if best_match.is_none()
 7209                            && open_options.open_new_workspace == Some(false)
 7210                        {
 7211                            existing = Some(window)
 7212                        }
 7213                    }
 7214                }
 7215            })?;
 7216
 7217            if open_options.open_new_workspace.is_none() && existing.is_none() {
 7218                if all_metadatas.iter().all(|file| !file.is_dir) {
 7219                    cx.update(|cx| {
 7220                        if let Some(window) = cx
 7221                            .active_window()
 7222                            .and_then(|window| window.downcast::<Workspace>())
 7223                        {
 7224                            if let Ok(workspace) = window.read(cx) {
 7225                                let project = workspace.project().read(cx);
 7226                                if project.is_local() && !project.is_via_collab() {
 7227                                    existing = Some(window);
 7228                                    open_visible = OpenVisible::None;
 7229                                    return;
 7230                                }
 7231                            }
 7232                        }
 7233                        for window in local_workspace_windows(cx) {
 7234                            if let Ok(workspace) = window.read(cx) {
 7235                                let project = workspace.project().read(cx);
 7236                                if project.is_via_collab() {
 7237                                    continue;
 7238                                }
 7239                                existing = Some(window);
 7240                                open_visible = OpenVisible::None;
 7241                                break;
 7242                            }
 7243                        }
 7244                    })?;
 7245                }
 7246            }
 7247        }
 7248
 7249        if let Some(existing) = existing {
 7250            let open_task = existing
 7251                .update(cx, |workspace, window, cx| {
 7252                    window.activate_window();
 7253                    workspace.open_paths(
 7254                        abs_paths,
 7255                        OpenOptions {
 7256                            visible: Some(open_visible),
 7257                            ..Default::default()
 7258                        },
 7259                        None,
 7260                        window,
 7261                        cx,
 7262                    )
 7263                })?
 7264                .await;
 7265
 7266            _ = existing.update(cx, |workspace, _, cx| {
 7267                for item in open_task.iter().flatten() {
 7268                    if let Err(e) = item {
 7269                        workspace.show_error(&e, cx);
 7270                    }
 7271                }
 7272            });
 7273
 7274            Ok((existing, open_task))
 7275        } else {
 7276            cx.update(move |cx| {
 7277                Workspace::new_local(
 7278                    abs_paths,
 7279                    app_state.clone(),
 7280                    open_options.replace_window,
 7281                    open_options.env,
 7282                    cx,
 7283                )
 7284            })?
 7285            .await
 7286        }
 7287    })
 7288}
 7289
 7290pub fn open_new(
 7291    open_options: OpenOptions,
 7292    app_state: Arc<AppState>,
 7293    cx: &mut App,
 7294    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7295) -> Task<anyhow::Result<()>> {
 7296    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7297    cx.spawn(async move |cx| {
 7298        let (workspace, opened_paths) = task.await?;
 7299        workspace.update(cx, |workspace, window, cx| {
 7300            if opened_paths.is_empty() {
 7301                init(workspace, window, cx)
 7302            }
 7303        })?;
 7304        Ok(())
 7305    })
 7306}
 7307
 7308pub fn create_and_open_local_file(
 7309    path: &'static Path,
 7310    window: &mut Window,
 7311    cx: &mut Context<Workspace>,
 7312    default_content: impl 'static + Send + FnOnce() -> Rope,
 7313) -> Task<Result<Box<dyn ItemHandle>>> {
 7314    cx.spawn_in(window, async move |workspace, cx| {
 7315        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7316        if !fs.is_file(path).await {
 7317            fs.create_file(path, Default::default()).await?;
 7318            fs.save(path, &default_content(), Default::default())
 7319                .await?;
 7320        }
 7321
 7322        let mut items = workspace
 7323            .update_in(cx, |workspace, window, cx| {
 7324                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7325                    workspace.open_paths(
 7326                        vec![path.to_path_buf()],
 7327                        OpenOptions {
 7328                            visible: Some(OpenVisible::None),
 7329                            ..Default::default()
 7330                        },
 7331                        None,
 7332                        window,
 7333                        cx,
 7334                    )
 7335                })
 7336            })?
 7337            .await?
 7338            .await;
 7339
 7340        let item = items.pop().flatten();
 7341        item.with_context(|| format!("path {path:?} is not a file"))?
 7342    })
 7343}
 7344
 7345pub fn open_ssh_project_with_new_connection(
 7346    window: WindowHandle<Workspace>,
 7347    connection_options: SshConnectionOptions,
 7348    cancel_rx: oneshot::Receiver<()>,
 7349    delegate: Arc<dyn SshClientDelegate>,
 7350    app_state: Arc<AppState>,
 7351    paths: Vec<PathBuf>,
 7352    cx: &mut App,
 7353) -> Task<Result<()>> {
 7354    cx.spawn(async move |cx| {
 7355        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7356            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7357
 7358        let session = match cx
 7359            .update(|cx| {
 7360                remote::SshRemoteClient::new(
 7361                    ConnectionIdentifier::Workspace(workspace_id.0),
 7362                    connection_options,
 7363                    cancel_rx,
 7364                    delegate,
 7365                    cx,
 7366                )
 7367            })?
 7368            .await?
 7369        {
 7370            Some(result) => result,
 7371            None => return Ok(()),
 7372        };
 7373
 7374        let project = cx.update(|cx| {
 7375            project::Project::ssh(
 7376                session,
 7377                app_state.client.clone(),
 7378                app_state.node_runtime.clone(),
 7379                app_state.user_store.clone(),
 7380                app_state.languages.clone(),
 7381                app_state.fs.clone(),
 7382                cx,
 7383            )
 7384        })?;
 7385
 7386        open_ssh_project_inner(
 7387            project,
 7388            paths,
 7389            serialized_ssh_project,
 7390            workspace_id,
 7391            serialized_workspace,
 7392            app_state,
 7393            window,
 7394            cx,
 7395        )
 7396        .await
 7397    })
 7398}
 7399
 7400pub fn open_ssh_project_with_existing_connection(
 7401    connection_options: SshConnectionOptions,
 7402    project: Entity<Project>,
 7403    paths: Vec<PathBuf>,
 7404    app_state: Arc<AppState>,
 7405    window: WindowHandle<Workspace>,
 7406    cx: &mut AsyncApp,
 7407) -> Task<Result<()>> {
 7408    cx.spawn(async move |cx| {
 7409        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7410            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7411
 7412        open_ssh_project_inner(
 7413            project,
 7414            paths,
 7415            serialized_ssh_project,
 7416            workspace_id,
 7417            serialized_workspace,
 7418            app_state,
 7419            window,
 7420            cx,
 7421        )
 7422        .await
 7423    })
 7424}
 7425
 7426async fn open_ssh_project_inner(
 7427    project: Entity<Project>,
 7428    paths: Vec<PathBuf>,
 7429    serialized_ssh_project: SerializedSshProject,
 7430    workspace_id: WorkspaceId,
 7431    serialized_workspace: Option<SerializedWorkspace>,
 7432    app_state: Arc<AppState>,
 7433    window: WindowHandle<Workspace>,
 7434    cx: &mut AsyncApp,
 7435) -> Result<()> {
 7436    let toolchains = DB.toolchains(workspace_id).await?;
 7437    for (toolchain, worktree_id, path) in toolchains {
 7438        project
 7439            .update(cx, |this, cx| {
 7440                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7441            })?
 7442            .await;
 7443    }
 7444    let mut project_paths_to_open = vec![];
 7445    let mut project_path_errors = vec![];
 7446
 7447    for path in paths {
 7448        let result = cx
 7449            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7450            .await;
 7451        match result {
 7452            Ok((_, project_path)) => {
 7453                project_paths_to_open.push((path.clone(), Some(project_path)));
 7454            }
 7455            Err(error) => {
 7456                project_path_errors.push(error);
 7457            }
 7458        };
 7459    }
 7460
 7461    if project_paths_to_open.is_empty() {
 7462        return Err(project_path_errors.pop().context("no paths given")?);
 7463    }
 7464
 7465    if let Some(detach_session_task) = window
 7466        .update(cx, |_workspace, window, cx| {
 7467            cx.spawn_in(window, async move |this, cx| {
 7468                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7469            })
 7470        })
 7471        .ok()
 7472    {
 7473        detach_session_task.await.ok();
 7474    }
 7475
 7476    cx.update_window(window.into(), |_, window, cx| {
 7477        window.replace_root(cx, |window, cx| {
 7478            telemetry::event!("SSH Project Opened");
 7479
 7480            let mut workspace =
 7481                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7482            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7483            workspace.update_history(cx);
 7484
 7485            if let Some(ref serialized) = serialized_workspace {
 7486                workspace.centered_layout = serialized.centered_layout;
 7487            }
 7488
 7489            workspace
 7490        });
 7491    })?;
 7492
 7493    window
 7494        .update(cx, |_, window, cx| {
 7495            window.activate_window();
 7496            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7497        })?
 7498        .await?;
 7499
 7500    window.update(cx, |workspace, _, cx| {
 7501        for error in project_path_errors {
 7502            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7503                if let Some(path) = error.error_tag("path") {
 7504                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7505                }
 7506            } else {
 7507                workspace.show_error(&error, cx)
 7508            }
 7509        }
 7510    })?;
 7511
 7512    Ok(())
 7513}
 7514
 7515fn serialize_ssh_project(
 7516    connection_options: SshConnectionOptions,
 7517    paths: Vec<PathBuf>,
 7518    cx: &AsyncApp,
 7519) -> Task<
 7520    Result<(
 7521        SerializedSshProject,
 7522        WorkspaceId,
 7523        Option<SerializedWorkspace>,
 7524    )>,
 7525> {
 7526    cx.background_spawn(async move {
 7527        let serialized_ssh_project = persistence::DB
 7528            .get_or_create_ssh_project(
 7529                connection_options.host.clone(),
 7530                connection_options.port,
 7531                paths
 7532                    .iter()
 7533                    .map(|path| path.to_string_lossy().to_string())
 7534                    .collect::<Vec<_>>(),
 7535                connection_options.username.clone(),
 7536            )
 7537            .await?;
 7538
 7539        let serialized_workspace =
 7540            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7541
 7542        let workspace_id = if let Some(workspace_id) =
 7543            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7544        {
 7545            workspace_id
 7546        } else {
 7547            persistence::DB.next_id().await?
 7548        };
 7549
 7550        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7551    })
 7552}
 7553
 7554pub fn join_in_room_project(
 7555    project_id: u64,
 7556    follow_user_id: u64,
 7557    app_state: Arc<AppState>,
 7558    cx: &mut App,
 7559) -> Task<Result<()>> {
 7560    let windows = cx.windows();
 7561    cx.spawn(async move |cx| {
 7562        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7563            window_handle
 7564                .downcast::<Workspace>()
 7565                .and_then(|window_handle| {
 7566                    window_handle
 7567                        .update(cx, |workspace, _window, cx| {
 7568                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7569                                Some(window_handle)
 7570                            } else {
 7571                                None
 7572                            }
 7573                        })
 7574                        .unwrap_or(None)
 7575                })
 7576        });
 7577
 7578        let workspace = if let Some(existing_workspace) = existing_workspace {
 7579            existing_workspace
 7580        } else {
 7581            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7582            let room = active_call
 7583                .read_with(cx, |call, _| call.room().cloned())?
 7584                .context("not in a call")?;
 7585            let project = room
 7586                .update(cx, |room, cx| {
 7587                    room.join_project(
 7588                        project_id,
 7589                        app_state.languages.clone(),
 7590                        app_state.fs.clone(),
 7591                        cx,
 7592                    )
 7593                })?
 7594                .await?;
 7595
 7596            let window_bounds_override = window_bounds_env_override();
 7597            cx.update(|cx| {
 7598                let mut options = (app_state.build_window_options)(None, cx);
 7599                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7600                cx.open_window(options, |window, cx| {
 7601                    cx.new(|cx| {
 7602                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7603                    })
 7604                })
 7605            })??
 7606        };
 7607
 7608        workspace.update(cx, |workspace, window, cx| {
 7609            cx.activate(true);
 7610            window.activate_window();
 7611
 7612            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7613                let follow_peer_id = room
 7614                    .read(cx)
 7615                    .remote_participants()
 7616                    .iter()
 7617                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7618                    .map(|(_, p)| p.peer_id)
 7619                    .or_else(|| {
 7620                        // If we couldn't follow the given user, follow the host instead.
 7621                        let collaborator = workspace
 7622                            .project()
 7623                            .read(cx)
 7624                            .collaborators()
 7625                            .values()
 7626                            .find(|collaborator| collaborator.is_host)?;
 7627                        Some(collaborator.peer_id)
 7628                    });
 7629
 7630                if let Some(follow_peer_id) = follow_peer_id {
 7631                    workspace.follow(follow_peer_id, window, cx);
 7632                }
 7633            }
 7634        })?;
 7635
 7636        anyhow::Ok(())
 7637    })
 7638}
 7639
 7640pub fn reload(reload: &Reload, cx: &mut App) {
 7641    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7642    let mut workspace_windows = cx
 7643        .windows()
 7644        .into_iter()
 7645        .filter_map(|window| window.downcast::<Workspace>())
 7646        .collect::<Vec<_>>();
 7647
 7648    // If multiple windows have unsaved changes, and need a save prompt,
 7649    // prompt in the active window before switching to a different window.
 7650    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7651
 7652    let mut prompt = None;
 7653    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7654        prompt = window
 7655            .update(cx, |_, window, cx| {
 7656                window.prompt(
 7657                    PromptLevel::Info,
 7658                    "Are you sure you want to restart?",
 7659                    None,
 7660                    &["Restart", "Cancel"],
 7661                    cx,
 7662                )
 7663            })
 7664            .ok();
 7665    }
 7666
 7667    let binary_path = reload.binary_path.clone();
 7668    cx.spawn(async move |cx| {
 7669        if let Some(prompt) = prompt {
 7670            let answer = prompt.await?;
 7671            if answer != 0 {
 7672                return Ok(());
 7673            }
 7674        }
 7675
 7676        // If the user cancels any save prompt, then keep the app open.
 7677        for window in workspace_windows {
 7678            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7679                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7680            }) {
 7681                if !should_close.await? {
 7682                    return Ok(());
 7683                }
 7684            }
 7685        }
 7686
 7687        cx.update(|cx| cx.restart(binary_path))
 7688    })
 7689    .detach_and_log_err(cx);
 7690}
 7691
 7692fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7693    let mut parts = value.split(',');
 7694    let x: usize = parts.next()?.parse().ok()?;
 7695    let y: usize = parts.next()?.parse().ok()?;
 7696    Some(point(px(x as f32), px(y as f32)))
 7697}
 7698
 7699fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7700    let mut parts = value.split(',');
 7701    let width: usize = parts.next()?.parse().ok()?;
 7702    let height: usize = parts.next()?.parse().ok()?;
 7703    Some(size(px(width as f32), px(height as f32)))
 7704}
 7705
 7706/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7707pub fn client_side_decorations(
 7708    element: impl IntoElement,
 7709    window: &mut Window,
 7710    cx: &mut App,
 7711) -> Stateful<Div> {
 7712    const BORDER_SIZE: Pixels = px(1.0);
 7713    let decorations = window.window_decorations();
 7714
 7715    match decorations {
 7716        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7717        Decorations::Server { .. } => window.set_client_inset(px(0.0)),
 7718    }
 7719
 7720    struct GlobalResizeEdge(ResizeEdge);
 7721    impl Global for GlobalResizeEdge {}
 7722
 7723    div()
 7724        .id("window-backdrop")
 7725        .bg(transparent_black())
 7726        .map(|div| match decorations {
 7727            Decorations::Server => div,
 7728            Decorations::Client { tiling, .. } => div
 7729                .when(!(tiling.top || tiling.right), |div| {
 7730                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7731                })
 7732                .when(!(tiling.top || tiling.left), |div| {
 7733                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7734                })
 7735                .when(!(tiling.bottom || tiling.right), |div| {
 7736                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7737                })
 7738                .when(!(tiling.bottom || tiling.left), |div| {
 7739                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7740                })
 7741                .when(!tiling.top, |div| {
 7742                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7743                })
 7744                .when(!tiling.bottom, |div| {
 7745                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7746                })
 7747                .when(!tiling.left, |div| {
 7748                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7749                })
 7750                .when(!tiling.right, |div| {
 7751                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7752                })
 7753                .on_mouse_move(move |e, window, cx| {
 7754                    let size = window.window_bounds().get_bounds().size;
 7755                    let pos = e.position;
 7756
 7757                    let new_edge =
 7758                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7759
 7760                    let edge = cx.try_global::<GlobalResizeEdge>();
 7761                    if new_edge != edge.map(|edge| edge.0) {
 7762                        window
 7763                            .window_handle()
 7764                            .update(cx, |workspace, _, cx| {
 7765                                cx.notify(workspace.entity_id());
 7766                            })
 7767                            .ok();
 7768                    }
 7769                })
 7770                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7771                    let size = window.window_bounds().get_bounds().size;
 7772                    let pos = e.position;
 7773
 7774                    let edge = match resize_edge(
 7775                        pos,
 7776                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7777                        size,
 7778                        tiling,
 7779                    ) {
 7780                        Some(value) => value,
 7781                        None => return,
 7782                    };
 7783
 7784                    window.start_window_resize(edge);
 7785                }),
 7786        })
 7787        .size_full()
 7788        .child(
 7789            div()
 7790                .cursor(CursorStyle::Arrow)
 7791                .map(|div| match decorations {
 7792                    Decorations::Server => div,
 7793                    Decorations::Client { tiling } => div
 7794                        .border_color(cx.theme().colors().border)
 7795                        .when(!(tiling.top || tiling.right), |div| {
 7796                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7797                        })
 7798                        .when(!(tiling.top || tiling.left), |div| {
 7799                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7800                        })
 7801                        .when(!(tiling.bottom || tiling.right), |div| {
 7802                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7803                        })
 7804                        .when(!(tiling.bottom || tiling.left), |div| {
 7805                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7806                        })
 7807                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7808                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7809                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7810                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7811                        .when(!tiling.is_tiled(), |div| {
 7812                            div.shadow(vec![gpui::BoxShadow {
 7813                                color: Hsla {
 7814                                    h: 0.,
 7815                                    s: 0.,
 7816                                    l: 0.,
 7817                                    a: 0.4,
 7818                                },
 7819                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7820                                spread_radius: px(0.),
 7821                                offset: point(px(0.0), px(0.0)),
 7822                            }])
 7823                        }),
 7824                })
 7825                .on_mouse_move(|_e, _, cx| {
 7826                    cx.stop_propagation();
 7827                })
 7828                .size_full()
 7829                .child(element),
 7830        )
 7831        .map(|div| match decorations {
 7832            Decorations::Server => div,
 7833            Decorations::Client { tiling, .. } => div.child(
 7834                canvas(
 7835                    |_bounds, window, _| {
 7836                        window.insert_hitbox(
 7837                            Bounds::new(
 7838                                point(px(0.0), px(0.0)),
 7839                                window.window_bounds().get_bounds().size,
 7840                            ),
 7841                            HitboxBehavior::Normal,
 7842                        )
 7843                    },
 7844                    move |_bounds, hitbox, window, cx| {
 7845                        let mouse = window.mouse_position();
 7846                        let size = window.window_bounds().get_bounds().size;
 7847                        let Some(edge) =
 7848                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7849                        else {
 7850                            return;
 7851                        };
 7852                        cx.set_global(GlobalResizeEdge(edge));
 7853                        window.set_cursor_style(
 7854                            match edge {
 7855                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7856                                ResizeEdge::Left | ResizeEdge::Right => {
 7857                                    CursorStyle::ResizeLeftRight
 7858                                }
 7859                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7860                                    CursorStyle::ResizeUpLeftDownRight
 7861                                }
 7862                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7863                                    CursorStyle::ResizeUpRightDownLeft
 7864                                }
 7865                            },
 7866                            &hitbox,
 7867                        );
 7868                    },
 7869                )
 7870                .size_full()
 7871                .absolute(),
 7872            ),
 7873        })
 7874}
 7875
 7876fn resize_edge(
 7877    pos: Point<Pixels>,
 7878    shadow_size: Pixels,
 7879    window_size: Size<Pixels>,
 7880    tiling: Tiling,
 7881) -> Option<ResizeEdge> {
 7882    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7883    if bounds.contains(&pos) {
 7884        return None;
 7885    }
 7886
 7887    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7888    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7889    if !tiling.top && top_left_bounds.contains(&pos) {
 7890        return Some(ResizeEdge::TopLeft);
 7891    }
 7892
 7893    let top_right_bounds = Bounds::new(
 7894        Point::new(window_size.width - corner_size.width, px(0.)),
 7895        corner_size,
 7896    );
 7897    if !tiling.top && top_right_bounds.contains(&pos) {
 7898        return Some(ResizeEdge::TopRight);
 7899    }
 7900
 7901    let bottom_left_bounds = Bounds::new(
 7902        Point::new(px(0.), window_size.height - corner_size.height),
 7903        corner_size,
 7904    );
 7905    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7906        return Some(ResizeEdge::BottomLeft);
 7907    }
 7908
 7909    let bottom_right_bounds = Bounds::new(
 7910        Point::new(
 7911            window_size.width - corner_size.width,
 7912            window_size.height - corner_size.height,
 7913        ),
 7914        corner_size,
 7915    );
 7916    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7917        return Some(ResizeEdge::BottomRight);
 7918    }
 7919
 7920    if !tiling.top && pos.y < shadow_size {
 7921        Some(ResizeEdge::Top)
 7922    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7923        Some(ResizeEdge::Bottom)
 7924    } else if !tiling.left && pos.x < shadow_size {
 7925        Some(ResizeEdge::Left)
 7926    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7927        Some(ResizeEdge::Right)
 7928    } else {
 7929        None
 7930    }
 7931}
 7932
 7933fn join_pane_into_active(
 7934    active_pane: &Entity<Pane>,
 7935    pane: &Entity<Pane>,
 7936    window: &mut Window,
 7937    cx: &mut App,
 7938) {
 7939    if pane == active_pane {
 7940        return;
 7941    } else if pane.read(cx).items_len() == 0 {
 7942        pane.update(cx, |_, cx| {
 7943            cx.emit(pane::Event::Remove {
 7944                focus_on_pane: None,
 7945            });
 7946        })
 7947    } else {
 7948        move_all_items(pane, active_pane, window, cx);
 7949    }
 7950}
 7951
 7952fn move_all_items(
 7953    from_pane: &Entity<Pane>,
 7954    to_pane: &Entity<Pane>,
 7955    window: &mut Window,
 7956    cx: &mut App,
 7957) {
 7958    let destination_is_different = from_pane != to_pane;
 7959    let mut moved_items = 0;
 7960    for (item_ix, item_handle) in from_pane
 7961        .read(cx)
 7962        .items()
 7963        .enumerate()
 7964        .map(|(ix, item)| (ix, item.clone()))
 7965        .collect::<Vec<_>>()
 7966    {
 7967        let ix = item_ix - moved_items;
 7968        if destination_is_different {
 7969            // Close item from previous pane
 7970            from_pane.update(cx, |source, cx| {
 7971                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7972            });
 7973            moved_items += 1;
 7974        }
 7975
 7976        // This automatically removes duplicate items in the pane
 7977        to_pane.update(cx, |destination, cx| {
 7978            destination.add_item(item_handle, true, true, None, window, cx);
 7979            window.focus(&destination.focus_handle(cx))
 7980        });
 7981    }
 7982}
 7983
 7984pub fn move_item(
 7985    source: &Entity<Pane>,
 7986    destination: &Entity<Pane>,
 7987    item_id_to_move: EntityId,
 7988    destination_index: usize,
 7989    activate: bool,
 7990    window: &mut Window,
 7991    cx: &mut App,
 7992) {
 7993    let Some((item_ix, item_handle)) = source
 7994        .read(cx)
 7995        .items()
 7996        .enumerate()
 7997        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7998        .map(|(ix, item)| (ix, item.clone()))
 7999    else {
 8000        // Tab was closed during drag
 8001        return;
 8002    };
 8003
 8004    if source != destination {
 8005        // Close item from previous pane
 8006        source.update(cx, |source, cx| {
 8007            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8008        });
 8009    }
 8010
 8011    // This automatically removes duplicate items in the pane
 8012    destination.update(cx, |destination, cx| {
 8013        destination.add_item_inner(
 8014            item_handle,
 8015            activate,
 8016            activate,
 8017            activate,
 8018            Some(destination_index),
 8019            window,
 8020            cx,
 8021        );
 8022        if activate {
 8023            window.focus(&destination.focus_handle(cx))
 8024        }
 8025    });
 8026}
 8027
 8028pub fn move_active_item(
 8029    source: &Entity<Pane>,
 8030    destination: &Entity<Pane>,
 8031    focus_destination: bool,
 8032    close_if_empty: bool,
 8033    window: &mut Window,
 8034    cx: &mut App,
 8035) {
 8036    if source == destination {
 8037        return;
 8038    }
 8039    let Some(active_item) = source.read(cx).active_item() else {
 8040        return;
 8041    };
 8042    source.update(cx, |source_pane, cx| {
 8043        let item_id = active_item.item_id();
 8044        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8045        destination.update(cx, |target_pane, cx| {
 8046            target_pane.add_item(
 8047                active_item,
 8048                focus_destination,
 8049                focus_destination,
 8050                Some(target_pane.items_len()),
 8051                window,
 8052                cx,
 8053            );
 8054        });
 8055    });
 8056}
 8057
 8058pub fn clone_active_item(
 8059    workspace_id: Option<WorkspaceId>,
 8060    source: &Entity<Pane>,
 8061    destination: &Entity<Pane>,
 8062    focus_destination: bool,
 8063    window: &mut Window,
 8064    cx: &mut App,
 8065) {
 8066    if source == destination {
 8067        return;
 8068    }
 8069    let Some(active_item) = source.read(cx).active_item() else {
 8070        return;
 8071    };
 8072    destination.update(cx, |target_pane, cx| {
 8073        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8074            return;
 8075        };
 8076        target_pane.add_item(
 8077            clone,
 8078            focus_destination,
 8079            focus_destination,
 8080            Some(target_pane.items_len()),
 8081            window,
 8082            cx,
 8083        );
 8084    });
 8085}
 8086
 8087#[derive(Debug)]
 8088pub struct WorkspacePosition {
 8089    pub window_bounds: Option<WindowBounds>,
 8090    pub display: Option<Uuid>,
 8091    pub centered_layout: bool,
 8092}
 8093
 8094pub fn ssh_workspace_position_from_db(
 8095    host: String,
 8096    port: Option<u16>,
 8097    user: Option<String>,
 8098    paths_to_open: &[PathBuf],
 8099    cx: &App,
 8100) -> Task<Result<WorkspacePosition>> {
 8101    let paths = paths_to_open
 8102        .iter()
 8103        .map(|path| path.to_string_lossy().to_string())
 8104        .collect::<Vec<_>>();
 8105
 8106    cx.background_spawn(async move {
 8107        let serialized_ssh_project = persistence::DB
 8108            .get_or_create_ssh_project(host, port, paths, user)
 8109            .await
 8110            .context("fetching serialized ssh project")?;
 8111        let serialized_workspace =
 8112            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8113
 8114        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8115            (Some(WindowBounds::Windowed(bounds)), None)
 8116        } else {
 8117            let restorable_bounds = serialized_workspace
 8118                .as_ref()
 8119                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8120                .or_else(|| {
 8121                    let (display, window_bounds) = DB.last_window().log_err()?;
 8122                    Some((display?, window_bounds?))
 8123                });
 8124
 8125            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8126                (Some(serialized_status.0), Some(serialized_display))
 8127            } else {
 8128                (None, None)
 8129            }
 8130        };
 8131
 8132        let centered_layout = serialized_workspace
 8133            .as_ref()
 8134            .map(|w| w.centered_layout)
 8135            .unwrap_or(false);
 8136
 8137        Ok(WorkspacePosition {
 8138            window_bounds,
 8139            display,
 8140            centered_layout,
 8141        })
 8142    })
 8143}
 8144
 8145pub fn with_active_or_new_workspace(
 8146    cx: &mut App,
 8147    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8148) {
 8149    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8150        Some(workspace) => {
 8151            cx.defer(move |cx| {
 8152                workspace
 8153                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8154                    .log_err();
 8155            });
 8156        }
 8157        None => {
 8158            let app_state = AppState::global(cx);
 8159            if let Some(app_state) = app_state.upgrade() {
 8160                open_new(
 8161                    OpenOptions::default(),
 8162                    app_state,
 8163                    cx,
 8164                    move |workspace, window, cx| f(workspace, window, cx),
 8165                )
 8166                .detach_and_log_err(cx);
 8167            }
 8168        }
 8169    }
 8170}
 8171
 8172#[cfg(test)]
 8173mod tests {
 8174    use std::{cell::RefCell, rc::Rc};
 8175
 8176    use super::*;
 8177    use crate::{
 8178        dock::{PanelEvent, test::TestPanel},
 8179        item::{
 8180            ItemEvent,
 8181            test::{TestItem, TestProjectItem},
 8182        },
 8183    };
 8184    use fs::FakeFs;
 8185    use gpui::{
 8186        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8187        UpdateGlobal, VisualTestContext, px,
 8188    };
 8189    use project::{Project, ProjectEntryId};
 8190    use serde_json::json;
 8191    use settings::SettingsStore;
 8192
 8193    #[gpui::test]
 8194    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8195        init_test(cx);
 8196
 8197        let fs = FakeFs::new(cx.executor());
 8198        let project = Project::test(fs, [], cx).await;
 8199        let (workspace, cx) =
 8200            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8201
 8202        // Adding an item with no ambiguity renders the tab without detail.
 8203        let item1 = cx.new(|cx| {
 8204            let mut item = TestItem::new(cx);
 8205            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8206            item
 8207        });
 8208        workspace.update_in(cx, |workspace, window, cx| {
 8209            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8210        });
 8211        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8212
 8213        // Adding an item that creates ambiguity increases the level of detail on
 8214        // both tabs.
 8215        let item2 = cx.new_window_entity(|_window, cx| {
 8216            let mut item = TestItem::new(cx);
 8217            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8218            item
 8219        });
 8220        workspace.update_in(cx, |workspace, window, cx| {
 8221            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8222        });
 8223        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8224        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8225
 8226        // Adding an item that creates ambiguity increases the level of detail only
 8227        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8228        // we stop at the highest detail available.
 8229        let item3 = cx.new(|cx| {
 8230            let mut item = TestItem::new(cx);
 8231            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8232            item
 8233        });
 8234        workspace.update_in(cx, |workspace, window, cx| {
 8235            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8236        });
 8237        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8238        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8239        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8240    }
 8241
 8242    #[gpui::test]
 8243    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8244        init_test(cx);
 8245
 8246        let fs = FakeFs::new(cx.executor());
 8247        fs.insert_tree(
 8248            "/root1",
 8249            json!({
 8250                "one.txt": "",
 8251                "two.txt": "",
 8252            }),
 8253        )
 8254        .await;
 8255        fs.insert_tree(
 8256            "/root2",
 8257            json!({
 8258                "three.txt": "",
 8259            }),
 8260        )
 8261        .await;
 8262
 8263        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8264        let (workspace, cx) =
 8265            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8266        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8267        let worktree_id = project.update(cx, |project, cx| {
 8268            project.worktrees(cx).next().unwrap().read(cx).id()
 8269        });
 8270
 8271        let item1 = cx.new(|cx| {
 8272            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8273        });
 8274        let item2 = cx.new(|cx| {
 8275            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8276        });
 8277
 8278        // Add an item to an empty pane
 8279        workspace.update_in(cx, |workspace, window, cx| {
 8280            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8281        });
 8282        project.update(cx, |project, cx| {
 8283            assert_eq!(
 8284                project.active_entry(),
 8285                project
 8286                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8287                    .map(|e| e.id)
 8288            );
 8289        });
 8290        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8291
 8292        // Add a second item to a non-empty pane
 8293        workspace.update_in(cx, |workspace, window, cx| {
 8294            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8295        });
 8296        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8297        project.update(cx, |project, cx| {
 8298            assert_eq!(
 8299                project.active_entry(),
 8300                project
 8301                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8302                    .map(|e| e.id)
 8303            );
 8304        });
 8305
 8306        // Close the active item
 8307        pane.update_in(cx, |pane, window, cx| {
 8308            pane.close_active_item(&Default::default(), window, cx)
 8309        })
 8310        .await
 8311        .unwrap();
 8312        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8313        project.update(cx, |project, cx| {
 8314            assert_eq!(
 8315                project.active_entry(),
 8316                project
 8317                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8318                    .map(|e| e.id)
 8319            );
 8320        });
 8321
 8322        // Add a project folder
 8323        project
 8324            .update(cx, |project, cx| {
 8325                project.find_or_create_worktree("root2", true, cx)
 8326            })
 8327            .await
 8328            .unwrap();
 8329        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8330
 8331        // Remove a project folder
 8332        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8333        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8334    }
 8335
 8336    #[gpui::test]
 8337    async fn test_close_window(cx: &mut TestAppContext) {
 8338        init_test(cx);
 8339
 8340        let fs = FakeFs::new(cx.executor());
 8341        fs.insert_tree("/root", json!({ "one": "" })).await;
 8342
 8343        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8344        let (workspace, cx) =
 8345            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8346
 8347        // When there are no dirty items, there's nothing to do.
 8348        let item1 = cx.new(TestItem::new);
 8349        workspace.update_in(cx, |w, window, cx| {
 8350            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8351        });
 8352        let task = workspace.update_in(cx, |w, window, cx| {
 8353            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8354        });
 8355        assert!(task.await.unwrap());
 8356
 8357        // When there are dirty untitled items, prompt to save each one. If the user
 8358        // cancels any prompt, then abort.
 8359        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8360        let item3 = cx.new(|cx| {
 8361            TestItem::new(cx)
 8362                .with_dirty(true)
 8363                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8364        });
 8365        workspace.update_in(cx, |w, window, cx| {
 8366            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8367            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8368        });
 8369        let task = workspace.update_in(cx, |w, window, cx| {
 8370            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8371        });
 8372        cx.executor().run_until_parked();
 8373        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8374        cx.executor().run_until_parked();
 8375        assert!(!cx.has_pending_prompt());
 8376        assert!(!task.await.unwrap());
 8377    }
 8378
 8379    #[gpui::test]
 8380    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8381        init_test(cx);
 8382
 8383        // Register TestItem as a serializable item
 8384        cx.update(|cx| {
 8385            register_serializable_item::<TestItem>(cx);
 8386        });
 8387
 8388        let fs = FakeFs::new(cx.executor());
 8389        fs.insert_tree("/root", json!({ "one": "" })).await;
 8390
 8391        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8392        let (workspace, cx) =
 8393            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8394
 8395        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8396        let item1 = cx.new(|cx| {
 8397            TestItem::new(cx)
 8398                .with_dirty(true)
 8399                .with_serialize(|| Some(Task::ready(Ok(()))))
 8400        });
 8401        let item2 = cx.new(|cx| {
 8402            TestItem::new(cx)
 8403                .with_dirty(true)
 8404                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8405                .with_serialize(|| Some(Task::ready(Ok(()))))
 8406        });
 8407        workspace.update_in(cx, |w, window, cx| {
 8408            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8409            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8410        });
 8411        let task = workspace.update_in(cx, |w, window, cx| {
 8412            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8413        });
 8414        assert!(task.await.unwrap());
 8415    }
 8416
 8417    #[gpui::test]
 8418    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8419        init_test(cx);
 8420
 8421        let fs = FakeFs::new(cx.executor());
 8422
 8423        let project = Project::test(fs, None, cx).await;
 8424        let (workspace, cx) =
 8425            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8426
 8427        let item1 = cx.new(|cx| {
 8428            TestItem::new(cx)
 8429                .with_dirty(true)
 8430                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8431        });
 8432        let item2 = cx.new(|cx| {
 8433            TestItem::new(cx)
 8434                .with_dirty(true)
 8435                .with_conflict(true)
 8436                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8437        });
 8438        let item3 = cx.new(|cx| {
 8439            TestItem::new(cx)
 8440                .with_dirty(true)
 8441                .with_conflict(true)
 8442                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8443        });
 8444        let item4 = cx.new(|cx| {
 8445            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8446                let project_item = TestProjectItem::new_untitled(cx);
 8447                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8448                project_item
 8449            }])
 8450        });
 8451        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8452            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8453            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8454            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8455            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8456            workspace.active_pane().clone()
 8457        });
 8458
 8459        let close_items = pane.update_in(cx, |pane, window, cx| {
 8460            pane.activate_item(1, true, true, window, cx);
 8461            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8462            let item1_id = item1.item_id();
 8463            let item3_id = item3.item_id();
 8464            let item4_id = item4.item_id();
 8465            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8466                [item1_id, item3_id, item4_id].contains(&id)
 8467            })
 8468        });
 8469        cx.executor().run_until_parked();
 8470
 8471        assert!(cx.has_pending_prompt());
 8472        cx.simulate_prompt_answer("Save all");
 8473
 8474        cx.executor().run_until_parked();
 8475
 8476        // Item 1 is saved. There's a prompt to save item 3.
 8477        pane.update(cx, |pane, cx| {
 8478            assert_eq!(item1.read(cx).save_count, 1);
 8479            assert_eq!(item1.read(cx).save_as_count, 0);
 8480            assert_eq!(item1.read(cx).reload_count, 0);
 8481            assert_eq!(pane.items_len(), 3);
 8482            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8483        });
 8484        assert!(cx.has_pending_prompt());
 8485
 8486        // Cancel saving item 3.
 8487        cx.simulate_prompt_answer("Discard");
 8488        cx.executor().run_until_parked();
 8489
 8490        // Item 3 is reloaded. There's a prompt to save item 4.
 8491        pane.update(cx, |pane, cx| {
 8492            assert_eq!(item3.read(cx).save_count, 0);
 8493            assert_eq!(item3.read(cx).save_as_count, 0);
 8494            assert_eq!(item3.read(cx).reload_count, 1);
 8495            assert_eq!(pane.items_len(), 2);
 8496            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8497        });
 8498
 8499        // There's a prompt for a path for item 4.
 8500        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8501        close_items.await.unwrap();
 8502
 8503        // The requested items are closed.
 8504        pane.update(cx, |pane, cx| {
 8505            assert_eq!(item4.read(cx).save_count, 0);
 8506            assert_eq!(item4.read(cx).save_as_count, 1);
 8507            assert_eq!(item4.read(cx).reload_count, 0);
 8508            assert_eq!(pane.items_len(), 1);
 8509            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8510        });
 8511    }
 8512
 8513    #[gpui::test]
 8514    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8515        init_test(cx);
 8516
 8517        let fs = FakeFs::new(cx.executor());
 8518        let project = Project::test(fs, [], cx).await;
 8519        let (workspace, cx) =
 8520            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8521
 8522        // Create several workspace items with single project entries, and two
 8523        // workspace items with multiple project entries.
 8524        let single_entry_items = (0..=4)
 8525            .map(|project_entry_id| {
 8526                cx.new(|cx| {
 8527                    TestItem::new(cx)
 8528                        .with_dirty(true)
 8529                        .with_project_items(&[dirty_project_item(
 8530                            project_entry_id,
 8531                            &format!("{project_entry_id}.txt"),
 8532                            cx,
 8533                        )])
 8534                })
 8535            })
 8536            .collect::<Vec<_>>();
 8537        let item_2_3 = cx.new(|cx| {
 8538            TestItem::new(cx)
 8539                .with_dirty(true)
 8540                .with_singleton(false)
 8541                .with_project_items(&[
 8542                    single_entry_items[2].read(cx).project_items[0].clone(),
 8543                    single_entry_items[3].read(cx).project_items[0].clone(),
 8544                ])
 8545        });
 8546        let item_3_4 = cx.new(|cx| {
 8547            TestItem::new(cx)
 8548                .with_dirty(true)
 8549                .with_singleton(false)
 8550                .with_project_items(&[
 8551                    single_entry_items[3].read(cx).project_items[0].clone(),
 8552                    single_entry_items[4].read(cx).project_items[0].clone(),
 8553                ])
 8554        });
 8555
 8556        // Create two panes that contain the following project entries:
 8557        //   left pane:
 8558        //     multi-entry items:   (2, 3)
 8559        //     single-entry items:  0, 2, 3, 4
 8560        //   right pane:
 8561        //     single-entry items:  4, 1
 8562        //     multi-entry items:   (3, 4)
 8563        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8564            let left_pane = workspace.active_pane().clone();
 8565            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8566            workspace.add_item_to_active_pane(
 8567                single_entry_items[0].boxed_clone(),
 8568                None,
 8569                true,
 8570                window,
 8571                cx,
 8572            );
 8573            workspace.add_item_to_active_pane(
 8574                single_entry_items[2].boxed_clone(),
 8575                None,
 8576                true,
 8577                window,
 8578                cx,
 8579            );
 8580            workspace.add_item_to_active_pane(
 8581                single_entry_items[3].boxed_clone(),
 8582                None,
 8583                true,
 8584                window,
 8585                cx,
 8586            );
 8587            workspace.add_item_to_active_pane(
 8588                single_entry_items[4].boxed_clone(),
 8589                None,
 8590                true,
 8591                window,
 8592                cx,
 8593            );
 8594
 8595            let right_pane = workspace
 8596                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8597                .unwrap();
 8598
 8599            right_pane.update(cx, |pane, cx| {
 8600                pane.add_item(
 8601                    single_entry_items[1].boxed_clone(),
 8602                    true,
 8603                    true,
 8604                    None,
 8605                    window,
 8606                    cx,
 8607                );
 8608                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8609            });
 8610
 8611            (left_pane, right_pane)
 8612        });
 8613
 8614        cx.focus(&right_pane);
 8615
 8616        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8617            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8618                .unwrap()
 8619        });
 8620        cx.executor().run_until_parked();
 8621
 8622        let msg = cx.pending_prompt().unwrap().0;
 8623        assert!(msg.contains("1.txt"));
 8624        assert!(!msg.contains("2.txt"));
 8625        assert!(!msg.contains("3.txt"));
 8626        assert!(!msg.contains("4.txt"));
 8627
 8628        cx.simulate_prompt_answer("Cancel");
 8629        close.await;
 8630
 8631        left_pane
 8632            .update_in(cx, |left_pane, window, cx| {
 8633                left_pane.close_item_by_id(
 8634                    single_entry_items[3].entity_id(),
 8635                    SaveIntent::Skip,
 8636                    window,
 8637                    cx,
 8638                )
 8639            })
 8640            .await
 8641            .unwrap();
 8642
 8643        close = right_pane.update_in(cx, |pane, window, cx| {
 8644            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8645                .unwrap()
 8646        });
 8647        cx.executor().run_until_parked();
 8648
 8649        let details = cx.pending_prompt().unwrap().1;
 8650        assert!(details.contains("1.txt"));
 8651        assert!(!details.contains("2.txt"));
 8652        assert!(details.contains("3.txt"));
 8653        // ideally this assertion could be made, but today we can only
 8654        // save whole items not project items, so the orphaned item 3 causes
 8655        // 4 to be saved too.
 8656        // assert!(!details.contains("4.txt"));
 8657
 8658        cx.simulate_prompt_answer("Save all");
 8659
 8660        cx.executor().run_until_parked();
 8661        close.await;
 8662        right_pane.read_with(cx, |pane, _| {
 8663            assert_eq!(pane.items_len(), 0);
 8664        });
 8665    }
 8666
 8667    #[gpui::test]
 8668    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8669        init_test(cx);
 8670
 8671        let fs = FakeFs::new(cx.executor());
 8672        let project = Project::test(fs, [], cx).await;
 8673        let (workspace, cx) =
 8674            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8675        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8676
 8677        let item = cx.new(|cx| {
 8678            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8679        });
 8680        let item_id = item.entity_id();
 8681        workspace.update_in(cx, |workspace, window, cx| {
 8682            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8683        });
 8684
 8685        // Autosave on window change.
 8686        item.update(cx, |item, cx| {
 8687            SettingsStore::update_global(cx, |settings, cx| {
 8688                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8689                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8690                })
 8691            });
 8692            item.is_dirty = true;
 8693        });
 8694
 8695        // Deactivating the window saves the file.
 8696        cx.deactivate_window();
 8697        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8698
 8699        // Re-activating the window doesn't save the file.
 8700        cx.update(|window, _| window.activate_window());
 8701        cx.executor().run_until_parked();
 8702        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8703
 8704        // Autosave on focus change.
 8705        item.update_in(cx, |item, window, cx| {
 8706            cx.focus_self(window);
 8707            SettingsStore::update_global(cx, |settings, cx| {
 8708                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8709                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8710                })
 8711            });
 8712            item.is_dirty = true;
 8713        });
 8714
 8715        // Blurring the item saves the file.
 8716        item.update_in(cx, |_, window, _| window.blur());
 8717        cx.executor().run_until_parked();
 8718        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8719
 8720        // Deactivating the window still saves the file.
 8721        item.update_in(cx, |item, window, cx| {
 8722            cx.focus_self(window);
 8723            item.is_dirty = true;
 8724        });
 8725        cx.deactivate_window();
 8726        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8727
 8728        // Autosave after delay.
 8729        item.update(cx, |item, cx| {
 8730            SettingsStore::update_global(cx, |settings, cx| {
 8731                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8732                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8733                })
 8734            });
 8735            item.is_dirty = true;
 8736            cx.emit(ItemEvent::Edit);
 8737        });
 8738
 8739        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8740        cx.executor().advance_clock(Duration::from_millis(250));
 8741        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8742
 8743        // After delay expires, the file is saved.
 8744        cx.executor().advance_clock(Duration::from_millis(250));
 8745        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8746
 8747        // Autosave on focus change, ensuring closing the tab counts as such.
 8748        item.update(cx, |item, cx| {
 8749            SettingsStore::update_global(cx, |settings, cx| {
 8750                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8751                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8752                })
 8753            });
 8754            item.is_dirty = true;
 8755            for project_item in &mut item.project_items {
 8756                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8757            }
 8758        });
 8759
 8760        pane.update_in(cx, |pane, window, cx| {
 8761            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8762        })
 8763        .await
 8764        .unwrap();
 8765        assert!(!cx.has_pending_prompt());
 8766        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8767
 8768        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8769        workspace.update_in(cx, |workspace, window, cx| {
 8770            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8771        });
 8772        item.update_in(cx, |item, window, cx| {
 8773            item.project_items[0].update(cx, |item, _| {
 8774                item.entry_id = None;
 8775            });
 8776            item.is_dirty = true;
 8777            window.blur();
 8778        });
 8779        cx.run_until_parked();
 8780        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8781
 8782        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8783        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8784            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8785        });
 8786        cx.run_until_parked();
 8787        assert!(cx.has_pending_prompt());
 8788        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8789    }
 8790
 8791    #[gpui::test]
 8792    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8793        init_test(cx);
 8794
 8795        let fs = FakeFs::new(cx.executor());
 8796
 8797        let project = Project::test(fs, [], cx).await;
 8798        let (workspace, cx) =
 8799            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8800
 8801        let item = cx.new(|cx| {
 8802            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8803        });
 8804        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8805        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8806        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8807
 8808        workspace.update_in(cx, |workspace, window, cx| {
 8809            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8810            let toolbar_notification_count = toolbar_notify_count.clone();
 8811            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8812                *toolbar_notification_count.borrow_mut() += 1
 8813            })
 8814            .detach();
 8815        });
 8816
 8817        pane.read_with(cx, |pane, _| {
 8818            assert!(!pane.can_navigate_backward());
 8819            assert!(!pane.can_navigate_forward());
 8820        });
 8821
 8822        item.update_in(cx, |item, _, cx| {
 8823            item.set_state("one".to_string(), cx);
 8824        });
 8825
 8826        // Toolbar must be notified to re-render the navigation buttons
 8827        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8828
 8829        pane.read_with(cx, |pane, _| {
 8830            assert!(pane.can_navigate_backward());
 8831            assert!(!pane.can_navigate_forward());
 8832        });
 8833
 8834        workspace
 8835            .update_in(cx, |workspace, window, cx| {
 8836                workspace.go_back(pane.downgrade(), window, cx)
 8837            })
 8838            .await
 8839            .unwrap();
 8840
 8841        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8842        pane.read_with(cx, |pane, _| {
 8843            assert!(!pane.can_navigate_backward());
 8844            assert!(pane.can_navigate_forward());
 8845        });
 8846    }
 8847
 8848    #[gpui::test]
 8849    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8850        init_test(cx);
 8851        let fs = FakeFs::new(cx.executor());
 8852
 8853        let project = Project::test(fs, [], cx).await;
 8854        let (workspace, cx) =
 8855            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8856
 8857        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8858            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8859            workspace.add_panel(panel.clone(), window, cx);
 8860
 8861            workspace
 8862                .right_dock()
 8863                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8864
 8865            panel
 8866        });
 8867
 8868        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8869        pane.update_in(cx, |pane, window, cx| {
 8870            let item = cx.new(TestItem::new);
 8871            pane.add_item(Box::new(item), true, true, None, window, cx);
 8872        });
 8873
 8874        // Transfer focus from center to panel
 8875        workspace.update_in(cx, |workspace, window, cx| {
 8876            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8877        });
 8878
 8879        workspace.update_in(cx, |workspace, window, cx| {
 8880            assert!(workspace.right_dock().read(cx).is_open());
 8881            assert!(!panel.is_zoomed(window, cx));
 8882            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8883        });
 8884
 8885        // Transfer focus from panel to center
 8886        workspace.update_in(cx, |workspace, window, cx| {
 8887            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8888        });
 8889
 8890        workspace.update_in(cx, |workspace, window, cx| {
 8891            assert!(workspace.right_dock().read(cx).is_open());
 8892            assert!(!panel.is_zoomed(window, cx));
 8893            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8894        });
 8895
 8896        // Close the dock
 8897        workspace.update_in(cx, |workspace, window, cx| {
 8898            workspace.toggle_dock(DockPosition::Right, window, cx);
 8899        });
 8900
 8901        workspace.update_in(cx, |workspace, window, cx| {
 8902            assert!(!workspace.right_dock().read(cx).is_open());
 8903            assert!(!panel.is_zoomed(window, cx));
 8904            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8905        });
 8906
 8907        // Open the dock
 8908        workspace.update_in(cx, |workspace, window, cx| {
 8909            workspace.toggle_dock(DockPosition::Right, window, cx);
 8910        });
 8911
 8912        workspace.update_in(cx, |workspace, window, cx| {
 8913            assert!(workspace.right_dock().read(cx).is_open());
 8914            assert!(!panel.is_zoomed(window, cx));
 8915            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8916        });
 8917
 8918        // Focus and zoom panel
 8919        panel.update_in(cx, |panel, window, cx| {
 8920            cx.focus_self(window);
 8921            panel.set_zoomed(true, window, cx)
 8922        });
 8923
 8924        workspace.update_in(cx, |workspace, window, cx| {
 8925            assert!(workspace.right_dock().read(cx).is_open());
 8926            assert!(panel.is_zoomed(window, cx));
 8927            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8928        });
 8929
 8930        // Transfer focus to the center closes the dock
 8931        workspace.update_in(cx, |workspace, window, cx| {
 8932            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8933        });
 8934
 8935        workspace.update_in(cx, |workspace, window, cx| {
 8936            assert!(!workspace.right_dock().read(cx).is_open());
 8937            assert!(panel.is_zoomed(window, cx));
 8938            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8939        });
 8940
 8941        // Transferring focus back to the panel keeps it zoomed
 8942        workspace.update_in(cx, |workspace, window, cx| {
 8943            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8944        });
 8945
 8946        workspace.update_in(cx, |workspace, window, cx| {
 8947            assert!(workspace.right_dock().read(cx).is_open());
 8948            assert!(panel.is_zoomed(window, cx));
 8949            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8950        });
 8951
 8952        // Close the dock while it is zoomed
 8953        workspace.update_in(cx, |workspace, window, cx| {
 8954            workspace.toggle_dock(DockPosition::Right, window, cx)
 8955        });
 8956
 8957        workspace.update_in(cx, |workspace, window, cx| {
 8958            assert!(!workspace.right_dock().read(cx).is_open());
 8959            assert!(panel.is_zoomed(window, cx));
 8960            assert!(workspace.zoomed.is_none());
 8961            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8962        });
 8963
 8964        // Opening the dock, when it's zoomed, retains focus
 8965        workspace.update_in(cx, |workspace, window, cx| {
 8966            workspace.toggle_dock(DockPosition::Right, window, cx)
 8967        });
 8968
 8969        workspace.update_in(cx, |workspace, window, cx| {
 8970            assert!(workspace.right_dock().read(cx).is_open());
 8971            assert!(panel.is_zoomed(window, cx));
 8972            assert!(workspace.zoomed.is_some());
 8973            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8974        });
 8975
 8976        // Unzoom and close the panel, zoom the active pane.
 8977        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8978        workspace.update_in(cx, |workspace, window, cx| {
 8979            workspace.toggle_dock(DockPosition::Right, window, cx)
 8980        });
 8981        pane.update_in(cx, |pane, window, cx| {
 8982            pane.toggle_zoom(&Default::default(), window, cx)
 8983        });
 8984
 8985        // Opening a dock unzooms the pane.
 8986        workspace.update_in(cx, |workspace, window, cx| {
 8987            workspace.toggle_dock(DockPosition::Right, window, cx)
 8988        });
 8989        workspace.update_in(cx, |workspace, window, cx| {
 8990            let pane = pane.read(cx);
 8991            assert!(!pane.is_zoomed());
 8992            assert!(!pane.focus_handle(cx).is_focused(window));
 8993            assert!(workspace.right_dock().read(cx).is_open());
 8994            assert!(workspace.zoomed.is_none());
 8995        });
 8996    }
 8997
 8998    #[gpui::test]
 8999    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 9000        init_test(cx);
 9001
 9002        let fs = FakeFs::new(cx.executor());
 9003
 9004        let project = Project::test(fs, None, cx).await;
 9005        let (workspace, cx) =
 9006            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9007
 9008        // Let's arrange the panes like this:
 9009        //
 9010        // +-----------------------+
 9011        // |         top           |
 9012        // +------+--------+-------+
 9013        // | left | center | right |
 9014        // +------+--------+-------+
 9015        // |        bottom         |
 9016        // +-----------------------+
 9017
 9018        let top_item = cx.new(|cx| {
 9019            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9020        });
 9021        let bottom_item = cx.new(|cx| {
 9022            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9023        });
 9024        let left_item = cx.new(|cx| {
 9025            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9026        });
 9027        let right_item = cx.new(|cx| {
 9028            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9029        });
 9030        let center_item = cx.new(|cx| {
 9031            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9032        });
 9033
 9034        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9035            let top_pane_id = workspace.active_pane().entity_id();
 9036            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9037            workspace.split_pane(
 9038                workspace.active_pane().clone(),
 9039                SplitDirection::Down,
 9040                window,
 9041                cx,
 9042            );
 9043            top_pane_id
 9044        });
 9045        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9046            let bottom_pane_id = workspace.active_pane().entity_id();
 9047            workspace.add_item_to_active_pane(
 9048                Box::new(bottom_item.clone()),
 9049                None,
 9050                false,
 9051                window,
 9052                cx,
 9053            );
 9054            workspace.split_pane(
 9055                workspace.active_pane().clone(),
 9056                SplitDirection::Up,
 9057                window,
 9058                cx,
 9059            );
 9060            bottom_pane_id
 9061        });
 9062        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9063            let left_pane_id = workspace.active_pane().entity_id();
 9064            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9065            workspace.split_pane(
 9066                workspace.active_pane().clone(),
 9067                SplitDirection::Right,
 9068                window,
 9069                cx,
 9070            );
 9071            left_pane_id
 9072        });
 9073        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9074            let right_pane_id = workspace.active_pane().entity_id();
 9075            workspace.add_item_to_active_pane(
 9076                Box::new(right_item.clone()),
 9077                None,
 9078                false,
 9079                window,
 9080                cx,
 9081            );
 9082            workspace.split_pane(
 9083                workspace.active_pane().clone(),
 9084                SplitDirection::Left,
 9085                window,
 9086                cx,
 9087            );
 9088            right_pane_id
 9089        });
 9090        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9091            let center_pane_id = workspace.active_pane().entity_id();
 9092            workspace.add_item_to_active_pane(
 9093                Box::new(center_item.clone()),
 9094                None,
 9095                false,
 9096                window,
 9097                cx,
 9098            );
 9099            center_pane_id
 9100        });
 9101        cx.executor().run_until_parked();
 9102
 9103        workspace.update_in(cx, |workspace, window, cx| {
 9104            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9105
 9106            // Join into next from center pane into right
 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!(right_pane_id, active_pane.entity_id());
 9113            assert_eq!(2, 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
 9119            // Join into next from right pane into bottom
 9120            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9121        });
 9122
 9123        workspace.update_in(cx, |workspace, window, cx| {
 9124            let active_pane = workspace.active_pane();
 9125            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9126            assert_eq!(3, active_pane.read(cx).items_len());
 9127            let item_ids_in_pane =
 9128                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9129            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9130            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9131            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9132
 9133            // Join into next from bottom pane into left
 9134            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9135        });
 9136
 9137        workspace.update_in(cx, |workspace, window, cx| {
 9138            let active_pane = workspace.active_pane();
 9139            assert_eq!(left_pane_id, active_pane.entity_id());
 9140            assert_eq!(4, active_pane.read(cx).items_len());
 9141            let item_ids_in_pane =
 9142                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9143            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9144            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9145            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9146            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9147
 9148            // Join into next from left pane into top
 9149            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9150        });
 9151
 9152        workspace.update_in(cx, |workspace, window, cx| {
 9153            let active_pane = workspace.active_pane();
 9154            assert_eq!(top_pane_id, active_pane.entity_id());
 9155            assert_eq!(5, active_pane.read(cx).items_len());
 9156            let item_ids_in_pane =
 9157                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9158            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9159            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9160            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9161            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9162            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9163
 9164            // Single pane left: no-op
 9165            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9166        });
 9167
 9168        workspace.update(cx, |workspace, _cx| {
 9169            let active_pane = workspace.active_pane();
 9170            assert_eq!(top_pane_id, active_pane.entity_id());
 9171        });
 9172    }
 9173
 9174    fn add_an_item_to_active_pane(
 9175        cx: &mut VisualTestContext,
 9176        workspace: &Entity<Workspace>,
 9177        item_id: u64,
 9178    ) -> Entity<TestItem> {
 9179        let item = cx.new(|cx| {
 9180            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9181                item_id,
 9182                "item{item_id}.txt",
 9183                cx,
 9184            )])
 9185        });
 9186        workspace.update_in(cx, |workspace, window, cx| {
 9187            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9188        });
 9189        return item;
 9190    }
 9191
 9192    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9193        return workspace.update_in(cx, |workspace, window, cx| {
 9194            let new_pane = workspace.split_pane(
 9195                workspace.active_pane().clone(),
 9196                SplitDirection::Right,
 9197                window,
 9198                cx,
 9199            );
 9200            new_pane
 9201        });
 9202    }
 9203
 9204    #[gpui::test]
 9205    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9206        init_test(cx);
 9207        let fs = FakeFs::new(cx.executor());
 9208        let project = Project::test(fs, None, cx).await;
 9209        let (workspace, cx) =
 9210            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9211
 9212        add_an_item_to_active_pane(cx, &workspace, 1);
 9213        split_pane(cx, &workspace);
 9214        add_an_item_to_active_pane(cx, &workspace, 2);
 9215        split_pane(cx, &workspace); // empty pane
 9216        split_pane(cx, &workspace);
 9217        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9218
 9219        cx.executor().run_until_parked();
 9220
 9221        workspace.update(cx, |workspace, cx| {
 9222            let num_panes = workspace.panes().len();
 9223            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9224            let active_item = workspace
 9225                .active_pane()
 9226                .read(cx)
 9227                .active_item()
 9228                .expect("item is in focus");
 9229
 9230            assert_eq!(num_panes, 4);
 9231            assert_eq!(num_items_in_current_pane, 1);
 9232            assert_eq!(active_item.item_id(), last_item.item_id());
 9233        });
 9234
 9235        workspace.update_in(cx, |workspace, window, cx| {
 9236            workspace.join_all_panes(window, cx);
 9237        });
 9238
 9239        workspace.update(cx, |workspace, cx| {
 9240            let num_panes = workspace.panes().len();
 9241            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9242            let active_item = workspace
 9243                .active_pane()
 9244                .read(cx)
 9245                .active_item()
 9246                .expect("item is in focus");
 9247
 9248            assert_eq!(num_panes, 1);
 9249            assert_eq!(num_items_in_current_pane, 3);
 9250            assert_eq!(active_item.item_id(), last_item.item_id());
 9251        });
 9252    }
 9253    struct TestModal(FocusHandle);
 9254
 9255    impl TestModal {
 9256        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9257            Self(cx.focus_handle())
 9258        }
 9259    }
 9260
 9261    impl EventEmitter<DismissEvent> for TestModal {}
 9262
 9263    impl Focusable for TestModal {
 9264        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9265            self.0.clone()
 9266        }
 9267    }
 9268
 9269    impl ModalView for TestModal {}
 9270
 9271    impl Render for TestModal {
 9272        fn render(
 9273            &mut self,
 9274            _window: &mut Window,
 9275            _cx: &mut Context<TestModal>,
 9276        ) -> impl IntoElement {
 9277            div().track_focus(&self.0)
 9278        }
 9279    }
 9280
 9281    #[gpui::test]
 9282    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9283        init_test(cx);
 9284        let fs = FakeFs::new(cx.executor());
 9285
 9286        let project = Project::test(fs, [], cx).await;
 9287        let (workspace, cx) =
 9288            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9289
 9290        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9291            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9292            workspace.add_panel(panel_1.clone(), window, cx);
 9293            workspace.toggle_dock(DockPosition::Left, window, cx);
 9294            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9295            workspace.add_panel(panel_2.clone(), window, cx);
 9296            workspace.toggle_dock(DockPosition::Right, window, cx);
 9297
 9298            let left_dock = workspace.left_dock();
 9299            assert_eq!(
 9300                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9301                panel_1.panel_id()
 9302            );
 9303            assert_eq!(
 9304                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9305                panel_1.size(window, cx)
 9306            );
 9307
 9308            left_dock.update(cx, |left_dock, cx| {
 9309                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9310            });
 9311            assert_eq!(
 9312                workspace
 9313                    .right_dock()
 9314                    .read(cx)
 9315                    .visible_panel()
 9316                    .unwrap()
 9317                    .panel_id(),
 9318                panel_2.panel_id(),
 9319            );
 9320
 9321            (panel_1, panel_2)
 9322        });
 9323
 9324        // Move panel_1 to the right
 9325        panel_1.update_in(cx, |panel_1, window, cx| {
 9326            panel_1.set_position(DockPosition::Right, window, cx)
 9327        });
 9328
 9329        workspace.update_in(cx, |workspace, window, cx| {
 9330            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9331            // Since it was the only panel on the left, the left dock should now be closed.
 9332            assert!(!workspace.left_dock().read(cx).is_open());
 9333            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9334            let right_dock = workspace.right_dock();
 9335            assert_eq!(
 9336                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9337                panel_1.panel_id()
 9338            );
 9339            assert_eq!(
 9340                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9341                px(1337.)
 9342            );
 9343
 9344            // Now we move panel_2 to the left
 9345            panel_2.set_position(DockPosition::Left, window, cx);
 9346        });
 9347
 9348        workspace.update(cx, |workspace, cx| {
 9349            // Since panel_2 was not visible on the right, we don't open the left dock.
 9350            assert!(!workspace.left_dock().read(cx).is_open());
 9351            // And the right dock is unaffected in its displaying of panel_1
 9352            assert!(workspace.right_dock().read(cx).is_open());
 9353            assert_eq!(
 9354                workspace
 9355                    .right_dock()
 9356                    .read(cx)
 9357                    .visible_panel()
 9358                    .unwrap()
 9359                    .panel_id(),
 9360                panel_1.panel_id(),
 9361            );
 9362        });
 9363
 9364        // Move panel_1 back to the left
 9365        panel_1.update_in(cx, |panel_1, window, cx| {
 9366            panel_1.set_position(DockPosition::Left, window, cx)
 9367        });
 9368
 9369        workspace.update_in(cx, |workspace, window, cx| {
 9370            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9371            let left_dock = workspace.left_dock();
 9372            assert!(left_dock.read(cx).is_open());
 9373            assert_eq!(
 9374                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9375                panel_1.panel_id()
 9376            );
 9377            assert_eq!(
 9378                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9379                px(1337.)
 9380            );
 9381            // And the right dock should be closed as it no longer has any panels.
 9382            assert!(!workspace.right_dock().read(cx).is_open());
 9383
 9384            // Now we move panel_1 to the bottom
 9385            panel_1.set_position(DockPosition::Bottom, window, cx);
 9386        });
 9387
 9388        workspace.update_in(cx, |workspace, window, cx| {
 9389            // Since panel_1 was visible on the left, we close the left dock.
 9390            assert!(!workspace.left_dock().read(cx).is_open());
 9391            // The bottom dock is sized based on the panel's default size,
 9392            // since the panel orientation changed from vertical to horizontal.
 9393            let bottom_dock = workspace.bottom_dock();
 9394            assert_eq!(
 9395                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9396                panel_1.size(window, cx),
 9397            );
 9398            // Close bottom dock and move panel_1 back to the left.
 9399            bottom_dock.update(cx, |bottom_dock, cx| {
 9400                bottom_dock.set_open(false, window, cx)
 9401            });
 9402            panel_1.set_position(DockPosition::Left, window, cx);
 9403        });
 9404
 9405        // Emit activated event on panel 1
 9406        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9407
 9408        // Now the left dock is open and panel_1 is active and focused.
 9409        workspace.update_in(cx, |workspace, window, cx| {
 9410            let left_dock = workspace.left_dock();
 9411            assert!(left_dock.read(cx).is_open());
 9412            assert_eq!(
 9413                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9414                panel_1.panel_id(),
 9415            );
 9416            assert!(panel_1.focus_handle(cx).is_focused(window));
 9417        });
 9418
 9419        // Emit closed event on panel 2, which is not active
 9420        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9421
 9422        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9423        workspace.update(cx, |workspace, cx| {
 9424            let left_dock = workspace.left_dock();
 9425            assert!(left_dock.read(cx).is_open());
 9426            assert_eq!(
 9427                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9428                panel_1.panel_id(),
 9429            );
 9430        });
 9431
 9432        // Emitting a ZoomIn event shows the panel as zoomed.
 9433        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9434        workspace.read_with(cx, |workspace, _| {
 9435            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9436            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9437        });
 9438
 9439        // Move panel to another dock while it is zoomed
 9440        panel_1.update_in(cx, |panel, window, cx| {
 9441            panel.set_position(DockPosition::Right, window, cx)
 9442        });
 9443        workspace.read_with(cx, |workspace, _| {
 9444            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9445
 9446            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9447        });
 9448
 9449        // This is a helper for getting a:
 9450        // - valid focus on an element,
 9451        // - that isn't a part of the panes and panels system of the Workspace,
 9452        // - and doesn't trigger the 'on_focus_lost' API.
 9453        let focus_other_view = {
 9454            let workspace = workspace.clone();
 9455            move |cx: &mut VisualTestContext| {
 9456                workspace.update_in(cx, |workspace, window, cx| {
 9457                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
 9458                        workspace.toggle_modal(window, cx, TestModal::new);
 9459                        workspace.toggle_modal(window, cx, TestModal::new);
 9460                    } else {
 9461                        workspace.toggle_modal(window, cx, TestModal::new);
 9462                    }
 9463                })
 9464            }
 9465        };
 9466
 9467        // If focus is transferred to another view that's not a panel or another pane, we still show
 9468        // the panel as zoomed.
 9469        focus_other_view(cx);
 9470        workspace.read_with(cx, |workspace, _| {
 9471            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9472            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9473        });
 9474
 9475        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9476        workspace.update_in(cx, |_workspace, window, cx| {
 9477            cx.focus_self(window);
 9478        });
 9479        workspace.read_with(cx, |workspace, _| {
 9480            assert_eq!(workspace.zoomed, None);
 9481            assert_eq!(workspace.zoomed_position, None);
 9482        });
 9483
 9484        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9485        // show the panel as zoomed because it wasn't zoomed before.
 9486        focus_other_view(cx);
 9487        workspace.read_with(cx, |workspace, _| {
 9488            assert_eq!(workspace.zoomed, None);
 9489            assert_eq!(workspace.zoomed_position, None);
 9490        });
 9491
 9492        // When the panel is activated, it is zoomed again.
 9493        cx.dispatch_action(ToggleRightDock);
 9494        workspace.read_with(cx, |workspace, _| {
 9495            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9496            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9497        });
 9498
 9499        // Emitting a ZoomOut event unzooms the panel.
 9500        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9501        workspace.read_with(cx, |workspace, _| {
 9502            assert_eq!(workspace.zoomed, None);
 9503            assert_eq!(workspace.zoomed_position, None);
 9504        });
 9505
 9506        // Emit closed event on panel 1, which is active
 9507        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9508
 9509        // Now the left dock is closed, because panel_1 was the active panel
 9510        workspace.update(cx, |workspace, cx| {
 9511            let right_dock = workspace.right_dock();
 9512            assert!(!right_dock.read(cx).is_open());
 9513        });
 9514    }
 9515
 9516    #[gpui::test]
 9517    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9518        init_test(cx);
 9519
 9520        let fs = FakeFs::new(cx.background_executor.clone());
 9521        let project = Project::test(fs, [], cx).await;
 9522        let (workspace, cx) =
 9523            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9524        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9525
 9526        let dirty_regular_buffer = cx.new(|cx| {
 9527            TestItem::new(cx)
 9528                .with_dirty(true)
 9529                .with_label("1.txt")
 9530                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9531        });
 9532        let dirty_regular_buffer_2 = cx.new(|cx| {
 9533            TestItem::new(cx)
 9534                .with_dirty(true)
 9535                .with_label("2.txt")
 9536                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9537        });
 9538        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9539            TestItem::new(cx)
 9540                .with_dirty(true)
 9541                .with_singleton(false)
 9542                .with_label("Fake Project Search")
 9543                .with_project_items(&[
 9544                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9545                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9546                ])
 9547        });
 9548        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9549        workspace.update_in(cx, |workspace, window, cx| {
 9550            workspace.add_item(
 9551                pane.clone(),
 9552                Box::new(dirty_regular_buffer.clone()),
 9553                None,
 9554                false,
 9555                false,
 9556                window,
 9557                cx,
 9558            );
 9559            workspace.add_item(
 9560                pane.clone(),
 9561                Box::new(dirty_regular_buffer_2.clone()),
 9562                None,
 9563                false,
 9564                false,
 9565                window,
 9566                cx,
 9567            );
 9568            workspace.add_item(
 9569                pane.clone(),
 9570                Box::new(dirty_multi_buffer_with_both.clone()),
 9571                None,
 9572                false,
 9573                false,
 9574                window,
 9575                cx,
 9576            );
 9577        });
 9578
 9579        pane.update_in(cx, |pane, window, cx| {
 9580            pane.activate_item(2, true, true, window, cx);
 9581            assert_eq!(
 9582                pane.active_item().unwrap().item_id(),
 9583                multi_buffer_with_both_files_id,
 9584                "Should select the multi buffer in the pane"
 9585            );
 9586        });
 9587        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9588            pane.close_other_items(
 9589                &CloseOtherItems {
 9590                    save_intent: Some(SaveIntent::Save),
 9591                    close_pinned: true,
 9592                },
 9593                None,
 9594                window,
 9595                cx,
 9596            )
 9597        });
 9598        cx.background_executor.run_until_parked();
 9599        assert!(!cx.has_pending_prompt());
 9600        close_all_but_multi_buffer_task
 9601            .await
 9602            .expect("Closing all buffers but the multi buffer failed");
 9603        pane.update(cx, |pane, cx| {
 9604            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9605            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9606            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9607            assert_eq!(pane.items_len(), 1);
 9608            assert_eq!(
 9609                pane.active_item().unwrap().item_id(),
 9610                multi_buffer_with_both_files_id,
 9611                "Should have only the multi buffer left in the pane"
 9612            );
 9613            assert!(
 9614                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9615                "The multi buffer containing the unsaved buffer should still be dirty"
 9616            );
 9617        });
 9618
 9619        dirty_regular_buffer.update(cx, |buffer, cx| {
 9620            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9621        });
 9622
 9623        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9624            pane.close_active_item(
 9625                &CloseActiveItem {
 9626                    save_intent: Some(SaveIntent::Close),
 9627                    close_pinned: false,
 9628                },
 9629                window,
 9630                cx,
 9631            )
 9632        });
 9633        cx.background_executor.run_until_parked();
 9634        assert!(
 9635            cx.has_pending_prompt(),
 9636            "Dirty multi buffer should prompt a save dialog"
 9637        );
 9638        cx.simulate_prompt_answer("Save");
 9639        cx.background_executor.run_until_parked();
 9640        close_multi_buffer_task
 9641            .await
 9642            .expect("Closing the multi buffer failed");
 9643        pane.update(cx, |pane, cx| {
 9644            assert_eq!(
 9645                dirty_multi_buffer_with_both.read(cx).save_count,
 9646                1,
 9647                "Multi buffer item should get be saved"
 9648            );
 9649            // Test impl does not save inner items, so we do not assert them
 9650            assert_eq!(
 9651                pane.items_len(),
 9652                0,
 9653                "No more items should be left in the pane"
 9654            );
 9655            assert!(pane.active_item().is_none());
 9656        });
 9657    }
 9658
 9659    #[gpui::test]
 9660    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9661        cx: &mut TestAppContext,
 9662    ) {
 9663        init_test(cx);
 9664
 9665        let fs = FakeFs::new(cx.background_executor.clone());
 9666        let project = Project::test(fs, [], cx).await;
 9667        let (workspace, cx) =
 9668            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9669        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9670
 9671        let dirty_regular_buffer = cx.new(|cx| {
 9672            TestItem::new(cx)
 9673                .with_dirty(true)
 9674                .with_label("1.txt")
 9675                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9676        });
 9677        let dirty_regular_buffer_2 = cx.new(|cx| {
 9678            TestItem::new(cx)
 9679                .with_dirty(true)
 9680                .with_label("2.txt")
 9681                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9682        });
 9683        let clear_regular_buffer = cx.new(|cx| {
 9684            TestItem::new(cx)
 9685                .with_label("3.txt")
 9686                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9687        });
 9688
 9689        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9690            TestItem::new(cx)
 9691                .with_dirty(true)
 9692                .with_singleton(false)
 9693                .with_label("Fake Project Search")
 9694                .with_project_items(&[
 9695                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9696                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9697                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9698                ])
 9699        });
 9700        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9701        workspace.update_in(cx, |workspace, window, cx| {
 9702            workspace.add_item(
 9703                pane.clone(),
 9704                Box::new(dirty_regular_buffer.clone()),
 9705                None,
 9706                false,
 9707                false,
 9708                window,
 9709                cx,
 9710            );
 9711            workspace.add_item(
 9712                pane.clone(),
 9713                Box::new(dirty_multi_buffer_with_both.clone()),
 9714                None,
 9715                false,
 9716                false,
 9717                window,
 9718                cx,
 9719            );
 9720        });
 9721
 9722        pane.update_in(cx, |pane, window, cx| {
 9723            pane.activate_item(1, true, true, window, cx);
 9724            assert_eq!(
 9725                pane.active_item().unwrap().item_id(),
 9726                multi_buffer_with_both_files_id,
 9727                "Should select the multi buffer in the pane"
 9728            );
 9729        });
 9730        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9731            pane.close_active_item(
 9732                &CloseActiveItem {
 9733                    save_intent: None,
 9734                    close_pinned: false,
 9735                },
 9736                window,
 9737                cx,
 9738            )
 9739        });
 9740        cx.background_executor.run_until_parked();
 9741        assert!(
 9742            cx.has_pending_prompt(),
 9743            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9744        );
 9745    }
 9746
 9747    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9748    /// closed when they are deleted from disk.
 9749    #[gpui::test]
 9750    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9751        init_test(cx);
 9752
 9753        // Enable the close_on_disk_deletion setting
 9754        cx.update_global(|store: &mut SettingsStore, cx| {
 9755            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9756                settings.close_on_file_delete = Some(true);
 9757            });
 9758        });
 9759
 9760        let fs = FakeFs::new(cx.background_executor.clone());
 9761        let project = Project::test(fs, [], cx).await;
 9762        let (workspace, cx) =
 9763            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9764        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9765
 9766        // Create a test item that simulates a file
 9767        let item = cx.new(|cx| {
 9768            TestItem::new(cx)
 9769                .with_label("test.txt")
 9770                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9771        });
 9772
 9773        // Add item to workspace
 9774        workspace.update_in(cx, |workspace, window, cx| {
 9775            workspace.add_item(
 9776                pane.clone(),
 9777                Box::new(item.clone()),
 9778                None,
 9779                false,
 9780                false,
 9781                window,
 9782                cx,
 9783            );
 9784        });
 9785
 9786        // Verify the item is in the pane
 9787        pane.read_with(cx, |pane, _| {
 9788            assert_eq!(pane.items().count(), 1);
 9789        });
 9790
 9791        // Simulate file deletion by setting the item's deleted state
 9792        item.update(cx, |item, _| {
 9793            item.set_has_deleted_file(true);
 9794        });
 9795
 9796        // Emit UpdateTab event to trigger the close behavior
 9797        cx.run_until_parked();
 9798        item.update(cx, |_, cx| {
 9799            cx.emit(ItemEvent::UpdateTab);
 9800        });
 9801
 9802        // Allow the close operation to complete
 9803        cx.run_until_parked();
 9804
 9805        // Verify the item was automatically closed
 9806        pane.read_with(cx, |pane, _| {
 9807            assert_eq!(
 9808                pane.items().count(),
 9809                0,
 9810                "Item should be automatically closed when file is deleted"
 9811            );
 9812        });
 9813    }
 9814
 9815    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9816    /// open with a strikethrough when they are deleted from disk.
 9817    #[gpui::test]
 9818    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9819        init_test(cx);
 9820
 9821        // Ensure close_on_disk_deletion is disabled (default)
 9822        cx.update_global(|store: &mut SettingsStore, cx| {
 9823            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9824                settings.close_on_file_delete = Some(false);
 9825            });
 9826        });
 9827
 9828        let fs = FakeFs::new(cx.background_executor.clone());
 9829        let project = Project::test(fs, [], cx).await;
 9830        let (workspace, cx) =
 9831            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9832        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9833
 9834        // Create a test item that simulates a file
 9835        let item = cx.new(|cx| {
 9836            TestItem::new(cx)
 9837                .with_label("test.txt")
 9838                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9839        });
 9840
 9841        // Add item to workspace
 9842        workspace.update_in(cx, |workspace, window, cx| {
 9843            workspace.add_item(
 9844                pane.clone(),
 9845                Box::new(item.clone()),
 9846                None,
 9847                false,
 9848                false,
 9849                window,
 9850                cx,
 9851            );
 9852        });
 9853
 9854        // Verify the item is in the pane
 9855        pane.read_with(cx, |pane, _| {
 9856            assert_eq!(pane.items().count(), 1);
 9857        });
 9858
 9859        // Simulate file deletion
 9860        item.update(cx, |item, _| {
 9861            item.set_has_deleted_file(true);
 9862        });
 9863
 9864        // Emit UpdateTab event
 9865        cx.run_until_parked();
 9866        item.update(cx, |_, cx| {
 9867            cx.emit(ItemEvent::UpdateTab);
 9868        });
 9869
 9870        // Allow any potential close operation to complete
 9871        cx.run_until_parked();
 9872
 9873        // Verify the item remains open (with strikethrough)
 9874        pane.read_with(cx, |pane, _| {
 9875            assert_eq!(
 9876                pane.items().count(),
 9877                1,
 9878                "Item should remain open when close_on_disk_deletion is disabled"
 9879            );
 9880        });
 9881
 9882        // Verify the item shows as deleted
 9883        item.read_with(cx, |item, _| {
 9884            assert!(
 9885                item.has_deleted_file,
 9886                "Item should be marked as having deleted file"
 9887            );
 9888        });
 9889    }
 9890
 9891    /// Tests that dirty files are not automatically closed when deleted from disk,
 9892    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9893    /// unsaved changes without being prompted.
 9894    #[gpui::test]
 9895    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9896        init_test(cx);
 9897
 9898        // Enable the close_on_file_delete setting
 9899        cx.update_global(|store: &mut SettingsStore, cx| {
 9900            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9901                settings.close_on_file_delete = Some(true);
 9902            });
 9903        });
 9904
 9905        let fs = FakeFs::new(cx.background_executor.clone());
 9906        let project = Project::test(fs, [], cx).await;
 9907        let (workspace, cx) =
 9908            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9909        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9910
 9911        // Create a dirty test item
 9912        let item = cx.new(|cx| {
 9913            TestItem::new(cx)
 9914                .with_dirty(true)
 9915                .with_label("test.txt")
 9916                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9917        });
 9918
 9919        // Add item to workspace
 9920        workspace.update_in(cx, |workspace, window, cx| {
 9921            workspace.add_item(
 9922                pane.clone(),
 9923                Box::new(item.clone()),
 9924                None,
 9925                false,
 9926                false,
 9927                window,
 9928                cx,
 9929            );
 9930        });
 9931
 9932        // Simulate file deletion
 9933        item.update(cx, |item, _| {
 9934            item.set_has_deleted_file(true);
 9935        });
 9936
 9937        // Emit UpdateTab event to trigger the close behavior
 9938        cx.run_until_parked();
 9939        item.update(cx, |_, cx| {
 9940            cx.emit(ItemEvent::UpdateTab);
 9941        });
 9942
 9943        // Allow any potential close operation to complete
 9944        cx.run_until_parked();
 9945
 9946        // Verify the item remains open (dirty files are not auto-closed)
 9947        pane.read_with(cx, |pane, _| {
 9948            assert_eq!(
 9949                pane.items().count(),
 9950                1,
 9951                "Dirty items should not be automatically closed even when file is deleted"
 9952            );
 9953        });
 9954
 9955        // Verify the item is marked as deleted and still dirty
 9956        item.read_with(cx, |item, _| {
 9957            assert!(
 9958                item.has_deleted_file,
 9959                "Item should be marked as having deleted file"
 9960            );
 9961            assert!(item.is_dirty, "Item should still be dirty");
 9962        });
 9963    }
 9964
 9965    /// Tests that navigation history is cleaned up when files are auto-closed
 9966    /// due to deletion from disk.
 9967    #[gpui::test]
 9968    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9969        init_test(cx);
 9970
 9971        // Enable the close_on_file_delete setting
 9972        cx.update_global(|store: &mut SettingsStore, cx| {
 9973            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9974                settings.close_on_file_delete = Some(true);
 9975            });
 9976        });
 9977
 9978        let fs = FakeFs::new(cx.background_executor.clone());
 9979        let project = Project::test(fs, [], cx).await;
 9980        let (workspace, cx) =
 9981            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9982        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9983
 9984        // Create test items
 9985        let item1 = cx.new(|cx| {
 9986            TestItem::new(cx)
 9987                .with_label("test1.txt")
 9988                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9989        });
 9990        let item1_id = item1.item_id();
 9991
 9992        let item2 = cx.new(|cx| {
 9993            TestItem::new(cx)
 9994                .with_label("test2.txt")
 9995                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9996        });
 9997
 9998        // Add items to workspace
 9999        workspace.update_in(cx, |workspace, window, cx| {
10000            workspace.add_item(
10001                pane.clone(),
10002                Box::new(item1.clone()),
10003                None,
10004                false,
10005                false,
10006                window,
10007                cx,
10008            );
10009            workspace.add_item(
10010                pane.clone(),
10011                Box::new(item2.clone()),
10012                None,
10013                false,
10014                false,
10015                window,
10016                cx,
10017            );
10018        });
10019
10020        // Activate item1 to ensure it gets navigation entries
10021        pane.update_in(cx, |pane, window, cx| {
10022            pane.activate_item(0, true, true, window, cx);
10023        });
10024
10025        // Switch to item2 and back to create navigation history
10026        pane.update_in(cx, |pane, window, cx| {
10027            pane.activate_item(1, true, true, window, cx);
10028        });
10029        cx.run_until_parked();
10030
10031        pane.update_in(cx, |pane, window, cx| {
10032            pane.activate_item(0, true, true, window, cx);
10033        });
10034        cx.run_until_parked();
10035
10036        // Simulate file deletion for item1
10037        item1.update(cx, |item, _| {
10038            item.set_has_deleted_file(true);
10039        });
10040
10041        // Emit UpdateTab event to trigger the close behavior
10042        item1.update(cx, |_, cx| {
10043            cx.emit(ItemEvent::UpdateTab);
10044        });
10045        cx.run_until_parked();
10046
10047        // Verify item1 was closed
10048        pane.read_with(cx, |pane, _| {
10049            assert_eq!(
10050                pane.items().count(),
10051                1,
10052                "Should have 1 item remaining after auto-close"
10053            );
10054        });
10055
10056        // Check navigation history after close
10057        let has_item = pane.read_with(cx, |pane, cx| {
10058            let mut has_item = false;
10059            pane.nav_history().for_each_entry(cx, |entry, _| {
10060                if entry.item.id() == item1_id {
10061                    has_item = true;
10062                }
10063            });
10064            has_item
10065        });
10066
10067        assert!(
10068            !has_item,
10069            "Navigation history should not contain closed item entries"
10070        );
10071    }
10072
10073    #[gpui::test]
10074    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10075        cx: &mut TestAppContext,
10076    ) {
10077        init_test(cx);
10078
10079        let fs = FakeFs::new(cx.background_executor.clone());
10080        let project = Project::test(fs, [], cx).await;
10081        let (workspace, cx) =
10082            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10083        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10084
10085        let dirty_regular_buffer = cx.new(|cx| {
10086            TestItem::new(cx)
10087                .with_dirty(true)
10088                .with_label("1.txt")
10089                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10090        });
10091        let dirty_regular_buffer_2 = cx.new(|cx| {
10092            TestItem::new(cx)
10093                .with_dirty(true)
10094                .with_label("2.txt")
10095                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10096        });
10097        let clear_regular_buffer = cx.new(|cx| {
10098            TestItem::new(cx)
10099                .with_label("3.txt")
10100                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10101        });
10102
10103        let dirty_multi_buffer = cx.new(|cx| {
10104            TestItem::new(cx)
10105                .with_dirty(true)
10106                .with_singleton(false)
10107                .with_label("Fake Project Search")
10108                .with_project_items(&[
10109                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10110                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10111                    clear_regular_buffer.read(cx).project_items[0].clone(),
10112                ])
10113        });
10114        workspace.update_in(cx, |workspace, window, cx| {
10115            workspace.add_item(
10116                pane.clone(),
10117                Box::new(dirty_regular_buffer.clone()),
10118                None,
10119                false,
10120                false,
10121                window,
10122                cx,
10123            );
10124            workspace.add_item(
10125                pane.clone(),
10126                Box::new(dirty_regular_buffer_2.clone()),
10127                None,
10128                false,
10129                false,
10130                window,
10131                cx,
10132            );
10133            workspace.add_item(
10134                pane.clone(),
10135                Box::new(dirty_multi_buffer.clone()),
10136                None,
10137                false,
10138                false,
10139                window,
10140                cx,
10141            );
10142        });
10143
10144        pane.update_in(cx, |pane, window, cx| {
10145            pane.activate_item(2, true, true, window, cx);
10146            assert_eq!(
10147                pane.active_item().unwrap().item_id(),
10148                dirty_multi_buffer.item_id(),
10149                "Should select the multi buffer in the pane"
10150            );
10151        });
10152        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10153            pane.close_active_item(
10154                &CloseActiveItem {
10155                    save_intent: None,
10156                    close_pinned: false,
10157                },
10158                window,
10159                cx,
10160            )
10161        });
10162        cx.background_executor.run_until_parked();
10163        assert!(
10164            !cx.has_pending_prompt(),
10165            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10166        );
10167        close_multi_buffer_task
10168            .await
10169            .expect("Closing multi buffer failed");
10170        pane.update(cx, |pane, cx| {
10171            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10172            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10173            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10174            assert_eq!(
10175                pane.items()
10176                    .map(|item| item.item_id())
10177                    .sorted()
10178                    .collect::<Vec<_>>(),
10179                vec![
10180                    dirty_regular_buffer.item_id(),
10181                    dirty_regular_buffer_2.item_id(),
10182                ],
10183                "Should have no multi buffer left in the pane"
10184            );
10185            assert!(dirty_regular_buffer.read(cx).is_dirty);
10186            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10187        });
10188    }
10189
10190    #[gpui::test]
10191    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10192        init_test(cx);
10193        let fs = FakeFs::new(cx.executor());
10194        let project = Project::test(fs, [], cx).await;
10195        let (workspace, cx) =
10196            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10197
10198        // Add a new panel to the right dock, opening the dock and setting the
10199        // focus to the new panel.
10200        let panel = workspace.update_in(cx, |workspace, window, cx| {
10201            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10202            workspace.add_panel(panel.clone(), window, cx);
10203
10204            workspace
10205                .right_dock()
10206                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10207
10208            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10209
10210            panel
10211        });
10212
10213        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10214        // panel to the next valid position which, in this case, is the left
10215        // dock.
10216        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10217        workspace.update(cx, |workspace, cx| {
10218            assert!(workspace.left_dock().read(cx).is_open());
10219            assert_eq!(panel.read(cx).position, DockPosition::Left);
10220        });
10221
10222        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10223        // panel to the next valid position which, in this case, is the bottom
10224        // dock.
10225        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10226        workspace.update(cx, |workspace, cx| {
10227            assert!(workspace.bottom_dock().read(cx).is_open());
10228            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10229        });
10230
10231        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10232        // around moving the panel to its initial position, the right dock.
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        // Remove focus from the panel, ensuring that, if the panel is not
10240        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10241        // the panel's position, so the panel is still in the right dock.
10242        workspace.update_in(cx, |workspace, window, cx| {
10243            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10244        });
10245
10246        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10247        workspace.update(cx, |workspace, cx| {
10248            assert!(workspace.right_dock().read(cx).is_open());
10249            assert_eq!(panel.read(cx).position, DockPosition::Right);
10250        });
10251    }
10252
10253    #[gpui::test]
10254    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10255        init_test(cx);
10256
10257        let fs = FakeFs::new(cx.executor());
10258        let project = Project::test(fs, [], cx).await;
10259        let (workspace, cx) =
10260            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10261
10262        let item_1 = cx.new(|cx| {
10263            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10264        });
10265        workspace.update_in(cx, |workspace, window, cx| {
10266            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10267            workspace.move_item_to_pane_in_direction(
10268                &MoveItemToPaneInDirection {
10269                    direction: SplitDirection::Right,
10270                    focus: true,
10271                    clone: false,
10272                },
10273                window,
10274                cx,
10275            );
10276            workspace.move_item_to_pane_at_index(
10277                &MoveItemToPane {
10278                    destination: 3,
10279                    focus: true,
10280                    clone: false,
10281                },
10282                window,
10283                cx,
10284            );
10285
10286            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10287            assert_eq!(
10288                pane_items_paths(&workspace.active_pane, cx),
10289                vec!["first.txt".to_string()],
10290                "Single item was not moved anywhere"
10291            );
10292        });
10293
10294        let item_2 = cx.new(|cx| {
10295            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10296        });
10297        workspace.update_in(cx, |workspace, window, cx| {
10298            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10299            assert_eq!(
10300                pane_items_paths(&workspace.panes[0], cx),
10301                vec!["first.txt".to_string(), "second.txt".to_string()],
10302            );
10303            workspace.move_item_to_pane_in_direction(
10304                &MoveItemToPaneInDirection {
10305                    direction: SplitDirection::Right,
10306                    focus: true,
10307                    clone: false,
10308                },
10309                window,
10310                cx,
10311            );
10312
10313            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10314            assert_eq!(
10315                pane_items_paths(&workspace.panes[0], cx),
10316                vec!["first.txt".to_string()],
10317                "After moving, one item should be left in the original pane"
10318            );
10319            assert_eq!(
10320                pane_items_paths(&workspace.panes[1], cx),
10321                vec!["second.txt".to_string()],
10322                "New item should have been moved to the new pane"
10323            );
10324        });
10325
10326        let item_3 = cx.new(|cx| {
10327            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10328        });
10329        workspace.update_in(cx, |workspace, window, cx| {
10330            let original_pane = workspace.panes[0].clone();
10331            workspace.set_active_pane(&original_pane, window, cx);
10332            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10333            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10334            assert_eq!(
10335                pane_items_paths(&workspace.active_pane, cx),
10336                vec!["first.txt".to_string(), "third.txt".to_string()],
10337                "New pane should be ready to move one item out"
10338            );
10339
10340            workspace.move_item_to_pane_at_index(
10341                &MoveItemToPane {
10342                    destination: 3,
10343                    focus: true,
10344                    clone: false,
10345                },
10346                window,
10347                cx,
10348            );
10349            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10350            assert_eq!(
10351                pane_items_paths(&workspace.active_pane, cx),
10352                vec!["first.txt".to_string()],
10353                "After moving, one item should be left in the original pane"
10354            );
10355            assert_eq!(
10356                pane_items_paths(&workspace.panes[1], cx),
10357                vec!["second.txt".to_string()],
10358                "Previously created pane should be unchanged"
10359            );
10360            assert_eq!(
10361                pane_items_paths(&workspace.panes[2], cx),
10362                vec!["third.txt".to_string()],
10363                "New item should have been moved to the new pane"
10364            );
10365        });
10366    }
10367
10368    #[gpui::test]
10369    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10370        init_test(cx);
10371
10372        let fs = FakeFs::new(cx.executor());
10373        let project = Project::test(fs, [], cx).await;
10374        let (workspace, cx) =
10375            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10376
10377        let item_1 = cx.new(|cx| {
10378            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10379        });
10380        workspace.update_in(cx, |workspace, window, cx| {
10381            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10382            workspace.move_item_to_pane_in_direction(
10383                &MoveItemToPaneInDirection {
10384                    direction: SplitDirection::Right,
10385                    focus: true,
10386                    clone: true,
10387                },
10388                window,
10389                cx,
10390            );
10391            workspace.move_item_to_pane_at_index(
10392                &MoveItemToPane {
10393                    destination: 3,
10394                    focus: true,
10395                    clone: true,
10396                },
10397                window,
10398                cx,
10399            );
10400
10401            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10402            for pane in workspace.panes() {
10403                assert_eq!(
10404                    pane_items_paths(pane, cx),
10405                    vec!["first.txt".to_string()],
10406                    "Single item exists in all panes"
10407                );
10408            }
10409        });
10410
10411        // verify that the active pane has been updated after waiting for the
10412        // pane focus event to fire and resolve
10413        workspace.read_with(cx, |workspace, _app| {
10414            assert_eq!(
10415                workspace.active_pane(),
10416                &workspace.panes[2],
10417                "The third pane should be the active one: {:?}",
10418                workspace.panes
10419            );
10420        })
10421    }
10422
10423    mod register_project_item_tests {
10424
10425        use super::*;
10426
10427        // View
10428        struct TestPngItemView {
10429            focus_handle: FocusHandle,
10430        }
10431        // Model
10432        struct TestPngItem {}
10433
10434        impl project::ProjectItem for TestPngItem {
10435            fn try_open(
10436                _project: &Entity<Project>,
10437                path: &ProjectPath,
10438                cx: &mut App,
10439            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10440                if path.path.extension().unwrap() == "png" {
10441                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10442                } else {
10443                    None
10444                }
10445            }
10446
10447            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10448                None
10449            }
10450
10451            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10452                None
10453            }
10454
10455            fn is_dirty(&self) -> bool {
10456                false
10457            }
10458        }
10459
10460        impl Item for TestPngItemView {
10461            type Event = ();
10462            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10463                "".into()
10464            }
10465        }
10466        impl EventEmitter<()> for TestPngItemView {}
10467        impl Focusable for TestPngItemView {
10468            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10469                self.focus_handle.clone()
10470            }
10471        }
10472
10473        impl Render for TestPngItemView {
10474            fn render(
10475                &mut self,
10476                _window: &mut Window,
10477                _cx: &mut Context<Self>,
10478            ) -> impl IntoElement {
10479                Empty
10480            }
10481        }
10482
10483        impl ProjectItem for TestPngItemView {
10484            type Item = TestPngItem;
10485
10486            fn for_project_item(
10487                _project: Entity<Project>,
10488                _pane: Option<&Pane>,
10489                _item: Entity<Self::Item>,
10490                _: &mut Window,
10491                cx: &mut Context<Self>,
10492            ) -> Self
10493            where
10494                Self: Sized,
10495            {
10496                Self {
10497                    focus_handle: cx.focus_handle(),
10498                }
10499            }
10500        }
10501
10502        // View
10503        struct TestIpynbItemView {
10504            focus_handle: FocusHandle,
10505        }
10506        // Model
10507        struct TestIpynbItem {}
10508
10509        impl project::ProjectItem for TestIpynbItem {
10510            fn try_open(
10511                _project: &Entity<Project>,
10512                path: &ProjectPath,
10513                cx: &mut App,
10514            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10515                if path.path.extension().unwrap() == "ipynb" {
10516                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10517                } else {
10518                    None
10519                }
10520            }
10521
10522            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10523                None
10524            }
10525
10526            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10527                None
10528            }
10529
10530            fn is_dirty(&self) -> bool {
10531                false
10532            }
10533        }
10534
10535        impl Item for TestIpynbItemView {
10536            type Event = ();
10537            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10538                "".into()
10539            }
10540        }
10541        impl EventEmitter<()> for TestIpynbItemView {}
10542        impl Focusable for TestIpynbItemView {
10543            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10544                self.focus_handle.clone()
10545            }
10546        }
10547
10548        impl Render for TestIpynbItemView {
10549            fn render(
10550                &mut self,
10551                _window: &mut Window,
10552                _cx: &mut Context<Self>,
10553            ) -> impl IntoElement {
10554                Empty
10555            }
10556        }
10557
10558        impl ProjectItem for TestIpynbItemView {
10559            type Item = TestIpynbItem;
10560
10561            fn for_project_item(
10562                _project: Entity<Project>,
10563                _pane: Option<&Pane>,
10564                _item: Entity<Self::Item>,
10565                _: &mut Window,
10566                cx: &mut Context<Self>,
10567            ) -> Self
10568            where
10569                Self: Sized,
10570            {
10571                Self {
10572                    focus_handle: cx.focus_handle(),
10573                }
10574            }
10575        }
10576
10577        struct TestAlternatePngItemView {
10578            focus_handle: FocusHandle,
10579        }
10580
10581        impl Item for TestAlternatePngItemView {
10582            type Event = ();
10583            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10584                "".into()
10585            }
10586        }
10587
10588        impl EventEmitter<()> for TestAlternatePngItemView {}
10589        impl Focusable for TestAlternatePngItemView {
10590            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10591                self.focus_handle.clone()
10592            }
10593        }
10594
10595        impl Render for TestAlternatePngItemView {
10596            fn render(
10597                &mut self,
10598                _window: &mut Window,
10599                _cx: &mut Context<Self>,
10600            ) -> impl IntoElement {
10601                Empty
10602            }
10603        }
10604
10605        impl ProjectItem for TestAlternatePngItemView {
10606            type Item = TestPngItem;
10607
10608            fn for_project_item(
10609                _project: Entity<Project>,
10610                _pane: Option<&Pane>,
10611                _item: Entity<Self::Item>,
10612                _: &mut Window,
10613                cx: &mut Context<Self>,
10614            ) -> Self
10615            where
10616                Self: Sized,
10617            {
10618                Self {
10619                    focus_handle: cx.focus_handle(),
10620                }
10621            }
10622        }
10623
10624        #[gpui::test]
10625        async fn test_register_project_item(cx: &mut TestAppContext) {
10626            init_test(cx);
10627
10628            cx.update(|cx| {
10629                register_project_item::<TestPngItemView>(cx);
10630                register_project_item::<TestIpynbItemView>(cx);
10631            });
10632
10633            let fs = FakeFs::new(cx.executor());
10634            fs.insert_tree(
10635                "/root1",
10636                json!({
10637                    "one.png": "BINARYDATAHERE",
10638                    "two.ipynb": "{ totally a notebook }",
10639                    "three.txt": "editing text, sure why not?"
10640                }),
10641            )
10642            .await;
10643
10644            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10645            let (workspace, cx) =
10646                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10647
10648            let worktree_id = project.update(cx, |project, cx| {
10649                project.worktrees(cx).next().unwrap().read(cx).id()
10650            });
10651
10652            let handle = workspace
10653                .update_in(cx, |workspace, window, cx| {
10654                    let project_path = (worktree_id, "one.png");
10655                    workspace.open_path(project_path, None, true, window, cx)
10656                })
10657                .await
10658                .unwrap();
10659
10660            // Now we can check if the handle we got back errored or not
10661            assert_eq!(
10662                handle.to_any().entity_type(),
10663                TypeId::of::<TestPngItemView>()
10664            );
10665
10666            let handle = workspace
10667                .update_in(cx, |workspace, window, cx| {
10668                    let project_path = (worktree_id, "two.ipynb");
10669                    workspace.open_path(project_path, None, true, window, cx)
10670                })
10671                .await
10672                .unwrap();
10673
10674            assert_eq!(
10675                handle.to_any().entity_type(),
10676                TypeId::of::<TestIpynbItemView>()
10677            );
10678
10679            let handle = workspace
10680                .update_in(cx, |workspace, window, cx| {
10681                    let project_path = (worktree_id, "three.txt");
10682                    workspace.open_path(project_path, None, true, window, cx)
10683                })
10684                .await;
10685            assert!(handle.is_err());
10686        }
10687
10688        #[gpui::test]
10689        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10690            init_test(cx);
10691
10692            cx.update(|cx| {
10693                register_project_item::<TestPngItemView>(cx);
10694                register_project_item::<TestAlternatePngItemView>(cx);
10695            });
10696
10697            let fs = FakeFs::new(cx.executor());
10698            fs.insert_tree(
10699                "/root1",
10700                json!({
10701                    "one.png": "BINARYDATAHERE",
10702                    "two.ipynb": "{ totally a notebook }",
10703                    "three.txt": "editing text, sure why not?"
10704                }),
10705            )
10706            .await;
10707            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10708            let (workspace, cx) =
10709                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10710            let worktree_id = project.update(cx, |project, cx| {
10711                project.worktrees(cx).next().unwrap().read(cx).id()
10712            });
10713
10714            let handle = workspace
10715                .update_in(cx, |workspace, window, cx| {
10716                    let project_path = (worktree_id, "one.png");
10717                    workspace.open_path(project_path, None, true, window, cx)
10718                })
10719                .await
10720                .unwrap();
10721
10722            // This _must_ be the second item registered
10723            assert_eq!(
10724                handle.to_any().entity_type(),
10725                TypeId::of::<TestAlternatePngItemView>()
10726            );
10727
10728            let handle = workspace
10729                .update_in(cx, |workspace, window, cx| {
10730                    let project_path = (worktree_id, "three.txt");
10731                    workspace.open_path(project_path, None, true, window, cx)
10732                })
10733                .await;
10734            assert!(handle.is_err());
10735        }
10736    }
10737
10738    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10739        pane.read(cx)
10740            .items()
10741            .flat_map(|item| {
10742                item.project_paths(cx)
10743                    .into_iter()
10744                    .map(|path| path.path.to_string_lossy().to_string())
10745            })
10746            .collect()
10747    }
10748
10749    pub fn init_test(cx: &mut TestAppContext) {
10750        cx.update(|cx| {
10751            let settings_store = SettingsStore::test(cx);
10752            cx.set_global(settings_store);
10753            theme::init(theme::LoadThemes::JustBase, cx);
10754            language::init(cx);
10755            crate::init_settings(cx);
10756            Project::init_settings(cx);
10757        });
10758    }
10759
10760    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10761        let item = TestProjectItem::new(id, path, cx);
10762        item.update(cx, |item, _| {
10763            item.is_dirty = true;
10764        });
10765        item
10766    }
10767}