import { ElementRef } from '@angular/core';
import { ScrollBehavior } from '../util/scroll-behavior';
import * as i0 from "@angular/core";
export declare class FloatingActionBehaviorDirective extends ScrollBehavior {
    private readonly elementRef;
    private _lastScrollY;
    defaultTarget: Window & typeof globalThis;
    constructor(elementRef: ElementRef);
    protected _processBehavior: (scrollTop: number | null) => void;
    static ɵfac: i0.ɵɵFactoryDeclaration<FloatingActionBehaviorDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<FloatingActionBehaviorDirective, "[uFloatingActionBehavior]", never, {}, {}, never, never, false, never>;
}