import { Menu } from "@lumino/widgets";
export declare class WorkspaceMenu extends Menu {
    private _host;
    private _workspace;
    init_overlay?: () => void;
    constructor(host: ShadowRoot, workspace: HTMLElement, options: Menu.IOptions);
    open(x: number, y: number, options?: Menu.IOpenOptions): void;
    private _overrideOpenChildMenu;
}
export declare function openSubmenu(submenu: Menu, itemNode: HTMLElement, host: HTMLElement): void;
export declare const SUBMENU_OVERLAP = 3;