import { DocumentRef, WindowRef } from 'ng-devui/window-ref';
import * as i0 from "@angular/core";
export declare class PositionService {
    private documentRef;
    private windowRef;
    constructor(documentRef: DocumentRef, windowRef: WindowRef);
    position(element: HTMLElement, round?: boolean): any;
    offset(element: HTMLElement, round?: boolean): {
        height: number;
        width: number;
        top: number;
        bottom: number;
        left: number;
        right: number;
    };
    getScrollParent(element: any): any;
    positionElements(hostElement: HTMLElement, targetElement: HTMLElement, placement: string | string[], appendToBody?: boolean): any;
    private getPlacement;
    private isInViewPort;
    private getStyle;
    private isStaticPositioned;
    private offsetParent;
    static ɵfac: i0.ɵɵFactoryDeclaration<PositionService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<PositionService>;
}