import * as React from 'react';
import { IBearCarouselProps, IInfo } from './types';
interface IState {
}
declare class BearVerticalMarquee extends React.Component<IBearCarouselProps, IState> {
    static defaultProps: {
        data: any;
        moveTime: number;
        isEnableAutoPlay: boolean;
        isGPURender: boolean;
        isDebug: boolean;
        autoPlayTime: number;
    };
    _verticalMarqueeId: string;
    timer?: any;
    activePage: number;
    activeActualIndex: number;
    info: IInfo;
    rootRef: React.RefObject<HTMLDivElement>;
    containerRef: React.RefObject<HTMLUListElement>;
    slideItemRefs: React.RefObject<Array<HTMLDivElement>>;
    pageRefs: React.RefObject<Array<HTMLDivElement>>;
    constructor(props: IBearCarouselProps);
    componentDidMount(): void;
    componentWillUnmount(): void;
    /***
     * Optimized rendering
     * @param nextProps
     * @param nextState
     */
    shouldComponentUpdate(nextProps: IBearCarouselProps, nextState: IState): boolean;
    /**
     * browser focus check auto play
     * @private
     */
    _onWindowFocus: () => void;
    /**
     * browser blur clean auto play timer
     * @private
     */
    _onWindowBlur: () => void;
    /**
     * Check and autoplay feature
     */
    _checkAndAutoPlay: () => void;
    /**
     * get next page
     */
    getNextPage: () => number;
    /**
     * Get virtual index
     */
    checkActualIndexInRange: (slideIndex: number) => boolean;
    /**
     * go to next page
     */
    toNext: () => void;
    /**
     * go to page
     * ex: slideView: 2, slideGroup: 2, total: 4
     * page1 -> (1-1) * 2) + 1 + (firstIndex -1) = 1
     */
    goToPage: (page: number, isUseAnimation?: boolean) => void;
    /**
     * Get the target item distance width(px)
     * @param slideIndex
     */
    _getMoveDistance: (slideIndex: number) => number;
    /**
     * Go to the actual location
     */
    goToActualIndex: (slideIndex: number, isUseAnimation?: boolean) => void;
    render(): JSX.Element;
}
export default BearVerticalMarquee;