import { ErrorHandler } from '@angular/core';
import { Observable } from 'rxjs';
import { GuidedTour, TourStep } from './guided-tour.constants';
import { WindowRefService } from "./windowref.service";
export declare class GuidedTourService {
    errorHandler: ErrorHandler;
    private windowRef;
    private dom;
    guidedTourCurrentStepStream: Observable<TourStep>;
    guidedTourOrbShowingStream: Observable<boolean>;
    private _guidedTourCurrentStepSubject;
    private _guidedTourOrbShowingSubject;
    private _currentTourStepIndex;
    private _currentTour;
    private _onFirstStep;
    private _onLastStep;
    private _onResizeMessage;
    constructor(errorHandler: ErrorHandler, windowRef: WindowRefService, dom: any);
    nextStep(): void;
    backStep(): void;
    skipTour(): void;
    resetTour(): void;
    startTour(tour: GuidedTour): void;
    activateOrb(): void;
    private _setFirstAndLast;
    private _checkSelectorValidity;
    readonly onLastStep: boolean;
    readonly onFirstStep: boolean;
    readonly onResizeMessage: boolean;
    readonly currentTourStepDisplay: number;
    readonly currentTourStepCount: number;
    readonly preventBackdropFromAdvancing: boolean;
    private getPreparedTourStep;
    private setTourOrientation;
}