endpoint WindowServer = 2
{
    Greet() => (i32 client_id, Gfx::IntRect screen_rect, Core::AnonymousBuffer theme_buffer)

    CreateMenubar() => (i32 menubar_id)
    DestroyMenubar(i32 menubar_id) => ()

    CreateMenu([UTF8] String menu_title) => (i32 menu_id)
    DestroyMenu(i32 menu_id) => ()

    AddMenuToMenubar(i32 menubar_id, i32 menu_id) => ()
    SetApplicationMenubar(i32 menubar_id) => ()

    SetSystemMenu(i32 menu_id) => ()

    AddMenuItem(
        i32 menu_id,
        i32 identifier,
        i32 submenu_id,
        [UTF8] String text,
        bool enabled,
        bool checkable,
        bool checked,
        bool is_default,
        [UTF8] String shortcut,
        Gfx::ShareableBitmap icon,
        bool exclusive) => ()

    AddMenuSeparator(i32 menu_id) => ()

    UpdateMenuItem(i32 menu_id, i32 identifier, i32 submenu_id, [UTF8] String text, bool enabled, bool checkable, bool checked, bool is_default, [UTF8] String shortcut) => ()

    CreateWindow(
        Gfx::IntRect rect,
        bool auto_position,
        bool has_alpha_channel,
        bool modal,
        bool minimizable,
        bool resizable,
        bool fullscreen,
        bool frameless,
        bool accessory,
        float opacity,
        Gfx::IntSize base_size,
        Gfx::IntSize size_increment,
        Optional<Gfx::IntSize> resize_aspect_ratio,
        i32 type,
        [UTF8] String title,
        i32 parent_window_id) => (i32 window_id)

    DestroyWindow(i32 window_id) => (Vector<i32> destroyed_window_ids)

    SetWindowTitle(i32 window_id, [UTF8] String title) => ()
    GetWindowTitle(i32 window_id) => ([UTF8] String title)

    SetWindowProgress(i32 window_id, i32 progress) =|

    SetWindowRect(i32 window_id, Gfx::IntRect rect) => (Gfx::IntRect rect)
    GetWindowRect(i32 window_id) => (Gfx::IntRect rect)

    GetWindowRectInMenubar(i32 window_id) => (Gfx::IntRect rect)

    IsMaximized(i32 window_id) => (bool maximized)

    InvalidateRect(i32 window_id, Vector<Gfx::IntRect> rects, bool ignore_occlusion) =|
    DidFinishPainting(i32 window_id, Vector<Gfx::IntRect> rects) =|

    SetGlobalCursorTracking(i32 window_id, bool enabled) => ()
    SetWindowOpacity(i32 window_id, float opacity) => ()

    SetWindowBackingStore(i32 window_id, i32 bpp, i32 pitch, IPC::File anon_file, i32 serial, bool has_alpha_channel, Gfx::IntSize size, bool flush_immediately) => ()

    WM_SetActiveWindow(i32 client_id, i32 window_id) =|
    WM_SetWindowMinimized(i32 client_id, i32 window_id, bool minimized) =|
    WM_StartWindowResize(i32 client_id, i32 window_id) =|
    WM_PopupWindowMenu(i32 client_id, i32 window_id, Gfx::IntPoint screen_position) =|
    WM_SetWindowTaskbarRect(i32 client_id, i32 window_id, Gfx::IntRect rect) =|

    SetWindowHasAlphaChannel(i32 window_id, bool has_alpha_channel) => ()
    MoveWindowToFront(i32 window_id) => ()
    SetFullscreen(i32 window_id, bool fullscreen) => ()
    PopupMenu(i32 menu_id, Gfx::IntPoint screen_position) => ()
    DismissMenu(i32 menu_id) => ()

    AsyncSetWallpaper(String path) =|

    SetBackgroundColor(String background_color)  => ()
    SetWallpaperMode(String mode)  => ()

    SetResolution(Gfx::IntSize resolution, int scale_factor) => (bool success, Gfx::IntSize resolution, int scale_factor)
    SetWindowIconBitmap(i32 window_id, Gfx::ShareableBitmap icon) => ()

    GetWallpaper() => (String path)
    SetWindowCursor(i32 window_id, i32 cursor_type) => ()
    SetWindowCustomCursor(i32 window_id, Gfx::ShareableBitmap cursor) => ()

    StartDrag([UTF8] String text, HashMap<String,ByteBuffer> mime_data, Gfx::ShareableBitmap drag_bitmap) => (bool started)

    SetSystemTheme(String theme_path, [UTF8] String theme_name) => (bool success)
    GetSystemTheme() => ([UTF8] String theme_name)
    RefreshSystemTheme() =|

    SetWindowBaseSizeAndSizeIncrement(i32 window_id, Gfx::IntSize base_size, Gfx::IntSize size_increment) => ()
    SetWindowResizeAspectRatio(i32 window_id, Optional<Gfx::IntSize> resize_aspect_ratio) => ()

    EnableDisplayLink() =|
    DisableDisplayLink() =|

    GetGlobalCursorPosition() => (Gfx::IntPoint position)

    SetMouseAcceleration(float factor) => ()
    GetMouseAcceleration() => (float factor)

    SetScrollStepSize(u32 step_size) => ()
    GetScrollStepSize() => (u32 step_size)

    Pong() =|
}