import { ElementRef } from '@angular/core';
import { Platform } from '@angular/cdk/platform';
import { Directionality } from '@angular/cdk/bidi';
import { Observable, Subject } from 'rxjs';
import { ScrollbarRef } from './scrollbar-ref';
import { NgScrollbar } from '../ng-scrollbar';
import { EventTargetLike } from 'rxjs/internal-compatibility';
export declare class HorizontalScrollbarRef extends ScrollbarRef {
    protected scrollbarRef: NgScrollbar;
    protected document: any;
    protected platform: Platform;
    protected destroyed: Subject<void>;
    protected dir: Directionality;
    protected eventContext: EventTargetLike<ElementRef>;
    protected readonly scrollSize: number;
    protected readonly viewportSize: number;
    protected readonly trackSize: number;
    protected readonly thumbSize: number;
    protected readonly scrollOffset: number;
    protected readonly dragOffset: number;
    protected readonly dragStartOffset: number;
    protected readonly pageProperty: string;
    protected readonly clientProperty: string;
    constructor(scrollbarRef: NgScrollbar, document: any, trackRef: ElementRef, thumbRef: ElementRef, platform: Platform, destroyed: Subject<void>, dir: Directionality, eventContext: EventTargetLike<ElementRef>);
    private _handleThumbPosition;
    protected handleDragPosition(position: number): number;
    protected scrolled(): Observable<any>;
    protected applyThumbStyle(size: number, position: number, trackMax?: number): void;
    protected mapToScrollToOption(value: number): ScrollToOptions;
    protected scrollTo(point: number): void;
    protected setHovered(value: boolean): void;
    protected setDragging(value: boolean): void;
}