import { QueryList } from '@angular/core';
import { Subject } from 'rxjs';
import { AnchorActiveChangeSource, IAnchorBox } from './anchor.type';
import { AnchorDirective } from './anchor.directive';
export declare class AnchorBoxDirective implements IAnchorBox {
    view: {
        top?: number;
        bottom?: number;
    };
    defaultAnchor: string;
    scrollTarget: HTMLElement;
    refreshAnchorMap: Subject<any>;
    anchorMap: {
        [anchor: string]: AnchorDirective;
    };
    _anchorList: QueryList<AnchorDirective>;
    anchorList: QueryList<AnchorDirective>;
    constructor();
    forceActiveAnchor(anchorName: string, forceActiveSource?: AnchorActiveChangeSource, deactivateOtherAnchor?: boolean): void;
}