import { Point } from 'spase';
import { DirtyInfo, ResponsiveDescriptor, ScrollOptions } from '../types/index.js';
import { UpdateDelegate } from './UpdateDelegate.js';
/**
 * A specific type of {@link UpdateDelegate} that has position and size update
 * events set up.
 */
export declare class ScrollDelegate extends UpdateDelegate {
    protected static DEFAULT_DIRTY_INFO: DirtyInfo;
    /**
     * Creates a new {@link ScrollDelegate} instance. If descriptors are not
     * specified, this instance will be automatically set up to listen for size
     * and position update events of the window.
     *
     * @param updateHandler The handler to invoke upon every update event.
     * @param descriptors Map of responsive descriptors.
     */
    constructor(updateHandler: (info: DirtyInfo, delegate: UpdateDelegate) => void, descriptors?: Record<string, number | true | ResponsiveDescriptor>);
    /**
     * Gets the minimum scroll position of the reference element.
     *
     * @returns Minimum scroll position.
     */
    get minPosition(): Point;
    /**
     * Gets the maximum scroll position of the reference element.
     *
     * @returns Maximum scroll position.
     */
    get maxPosition(): Point;
    /**
     * Scrolls the scroll event listener to the top of its minimum vertical scroll
     * position.
     *
     * @param options See {@link ScrollOptions}.
     */
    scrollToTop(options?: ScrollOptions): void;
    /**
     * Scrolls the scroll event listener to the bottom of its maximum vertical
     * scroll position.
     *
     * @param options See {@link ScrollOptions}.
     */
    scrollToBottom(options?: ScrollOptions): void;
    /**
     * Scrolls the scroll event listener to the left of its maximum horizontal
     * scroll position.
     *
     * @param options See {@link ScrollOptions}.
     */
    scrollToLeft(options?: ScrollOptions): void;
    /**
     * Scrolls the scroll event listener to the right of its maximum horizontal
     * scroll position.
     *
     * @param options See {@link ScrollOptions}.
     */
    scrollToRight(options?: ScrollOptions): void;
    /**
     * Scrolls the scroll event listener to the specified position.
     *
     * @param position The position to scroll to.
     * @param options See {@link ScrollOptions}.
     */
    scrollTo(position: Point, options?: ScrollOptions): void;
    /**
     * Scrolls the scroll event listener horizontally to the specified
     * x-coordinate.
     *
     * @param x The x-coordinate to scroll to.
     * @param options See {@link ScrollOptions}.
     */
    hscrollTo(x: number, options?: ScrollOptions): void;
    /**
     * Scrolls the scroll event listener horizontally to the specified
     * y-coordinate.
     *
     * @param y The y-coordinate to scroll to.
     * @param options See {@link ScrollOptions}.
     */
    vscrollTo(y: number, options?: ScrollOptions): void;
}