import { TabBar } from "@lumino/widgets";
import { Menu } from "@lumino/widgets";
import { PerspectiveWorkspace } from "./workspace";
import { Message } from "@lumino/messaging";
import { Title } from "@lumino/widgets";
export declare class PerspectiveTabBar extends TabBar<any> {
    _workspace: PerspectiveWorkspace;
    __content_node__?: HTMLElement;
    _menu?: Menu;
    __titles: string[];
    constructor(workspace: PerspectiveWorkspace, options?: {});
    get private_titles(): Title<any>[];
    onUpdateRequest(msg: Message): void;
    onClick(otherTitles: Title<any>[], index: number, event: MouseEvent): void;
    _check_shade(): void;
    handleEvent(event: MouseEvent): void;
    /**
     * Shadow dom targets events at the host, not the clicked element, which
     * Lumino dislikes.  This makes the event look like it is not crossing
     * the ShadowDom boundary.
     *
     */
    retargetEvent(event: MouseEvent): MouseEvent;
    _addEventListeners(): void;
}