import { ServiceManager } from 'jupyter-js-services';
import { DocumentRegistry } from '../docregistry';
import { Application } from 'phosphide/lib/core/application';
import { IChangedArgs } from 'phosphor-properties';
import { ISignal } from 'phosphor-signaling';
import { MainMenu } from '../mainmenu/plugin';
/**
 * A class that tracks the current path of the file browser.
 */
export declare class PathTracker {
    /**
     * A signal emitted when the current path changes.
     */
    pathChanged: ISignal<PathTracker, IChangedArgs<string>>;
    /**
     * The current path of the filebrowser.
     *
     * #### Notes
     * This is a read-only property.
     */
    path: string;
}
/**
 * The default file browser provider.
 */
export declare const fileBrowserProvider: {
    id: string;
    provides: typeof PathTracker;
    resolve: () => PathTracker;
};
/**
 * The default file browser extension.
 */
export declare const fileBrowserExtension: {
    id: string;
    requires: (typeof ServiceManager | typeof DocumentRegistry | typeof MainMenu)[];
    activate: (app: Application, manager: ServiceManager, registry: DocumentRegistry, mainMenu: MainMenu) => void;
};