import { ApplicationRef, ComponentFactoryResolver, ElementRef, Injector, OnDestroy, OnInit } from '@angular/core';
import { TsWindowService } from '@terminus/ngx-tools/browser';
/**
 * The tsLoadingOverlay UI Directive.
 * Provides a spinner overlay to demonstrate loading for async data.
 *
 * @example
 * <div [tsLoadingOverlay]="true"></div>
 *
 * <example-url>https://getterminus.github.io/ui-demos-release/components/loading-overlay</example-url>
 */
export declare class TsLoadingOverlayDirective implements OnInit, OnDestroy {
    private elementRef;
    private windowService;
    private componentFactoryResolver;
    private appRef;
    private injector;
    /**
     * A reference to the portal
     */
    private readonly loadingOverlayPortal;
    /**
     * Reference to our portal host
     */
    private readonly bodyPortalHost;
    /**
     * Define a setter to show/hide the loading overlay
     *
     * @param value
     */
    set tsLoadingOverlay(value: boolean);
    /**
     * Alias the position back onto the component as a style attribute
     */
    position: string;
    constructor(elementRef: ElementRef, windowService: TsWindowService, componentFactoryResolver: ComponentFactoryResolver, appRef: ApplicationRef, injector: Injector);
    /**
     * Determine and set the needed position
     */
    ngOnInit(): void;
    /**
     * Destroy the portal host if it exists
     */
    ngOnDestroy(): void;
    /**
     * Return the correct position
     *
     * @param position - The current position value
     * @returns The correct position value
     */
    private determinePosition;
}