import { Injector } from '@angular/core';
export declare class NavigationService {
    protected injector: Injector;
    currentTitle: string;
    visible: boolean;
    private _titleEmitter;
    private _visibleEmitter;
    private _sidenavEmitter;
    constructor(injector: Injector);
    setTitle(title: string): void;
    setVisible(visible: boolean): void;
    openSidenav(): void;
    closeSidenav(): void;
    onTitleChange(onNext: (value: any) => void): Object;
    onVisibleChange(onNext: (value: boolean) => void): Object;
    onSidenavChange(onNext: (value: any) => void): Object;
    private _emitTitleChanged(title);
    private _emitVisibleChanged(visible);
    private _emitOpenSidenav();
    private _emitCloseSidenav();
}