/**
 * @license
 *-------------------------------------------------------------------------------------------
 * Copyright © 2026 Progress Software Corporation. All rights reserved.
 * Licensed under commercial license. See LICENSE.md in the package root for more information
 *-------------------------------------------------------------------------------------------
 */
import { RowHeightService } from './RowHeightService';
/**
 * @hidden
 */
export declare class ScrollAction {
    offset: number;
    constructor(offset: number);
}
/**
 * @hidden
 */
export declare class PageAction {
    skip: number;
    constructor(skip: number);
}
/**
 * @hidden
 */
export type ScrollElement = {
    offsetHeight: number;
    offsetWidth: number;
    scrollLeft: number;
    scrollTop: number;
};
/**
 * @hidden
 */
export type Action = ScrollAction | PageAction;
/**
 * @hidden
 */
export declare class ScrollerService {
    private onScrollAction;
    private onPageAction;
    private direction;
    private firstLoaded;
    private lastLoaded;
    private lastScrollTop;
    private take;
    private total;
    private rowHeightService;
    private bottomOffset;
    private topOffset;
    constructor(onScrollAction: (action: ScrollAction) => void, onPageAction: (action: PageAction) => void);
    create(rowHeightService: RowHeightService, skip: number, take: number, total: number, topOffset?: number, bottomOffset?: number, direction?: 'horizontal' | 'vertical'): void;
    onScroll({ scrollLeft, scrollTop, offsetHeight, offsetWidth }: ScrollElement): void;
    rowOffset(index: number): number;
    private rowsForHeight;
}