import { ApplicationRef, EnvironmentInjector, NgZone, OnDestroy } from '@angular/core';
import { DokuBackdropService } from '../backdrop';
import * as i0 from "@angular/core";
export declare class DokuPageLoadingService implements OnDestroy {
    private document;
    private backdropService;
    private environmentInjector;
    private appRef;
    private ngZone;
    private mobileScreen;
    private pageLoadingElement?;
    private spinnerComponentRef?;
    private resizeListener?;
    private currentSpinnerSize?;
    private backdropRef?;
    constructor(document: Document, backdropService: DokuBackdropService, environmentInjector: EnvironmentInjector, appRef: ApplicationRef, ngZone: NgZone);
    private get isOpen();
    ngOnDestroy(): void;
    show(): void;
    hide(): void;
    private createPageLoadingElement;
    private appendPageLoadingElementToBody;
    private removePageLoadingElement;
    static ɵfac: i0.ɵɵFactoryDeclaration<DokuPageLoadingService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DokuPageLoadingService>;
}