import React, { Component } from 'react';
import { InfiniteScrollProps } from './iTree';
export default class InfiniteScroll extends Component<InfiniteScrollProps> {
    static defaultProps: {
        element: string;
        ref: null;
        style: {};
        getScrollParent: null;
        treeList: never[];
        handleTreeListChange: () => void;
    };
    rowsInView: number;
    treeList: any;
    loadCount: number;
    currentIndex: number;
    startIndex: number;
    endIndex: number;
    options: any;
    scrollComponent: HTMLElement | undefined;
    scrollTop: number;
    constructor(props: InfiniteScrollProps);
    componentDidMount(): void;
    UNSAFE_componentWillReceiveProps(nextProps: InfiniteScrollProps): void;
    componentWillUnmount(): void;
    isPassiveSupported(): boolean;
    eventListenerOptions: () => any;
    /**
     * 解除mousewheel事件监听
     */
    /**
     * 解除scroll事件监听
     */
    detachScrollListener(): void;
    /**
     * 获取父组件(用户自定义父组件或者当前dom的parentNode)
     * @param {*} el
     */
    getParentElement(el: HTMLElement | undefined): (HTMLElement);
    filterProps(props: InfiniteScrollProps): InfiniteScrollProps;
    /**
     * 绑定scroll事件
     */
    attachScrollListener(): void;
    scrollOrResizeHandler: () => void;
    mousewheelListener: (e: React.WheelEvent) => void;
    /**
     * 滚动事件监听
     */
    scrollListener: () => void;
    /**
     * @description 根据返回的scrollTop计算当前的索引。
     */
    handleScrollY: (isNewDataLess?: boolean, isFold?: boolean) => void;
    /**
     * 根据 startIndex 和 endIndex 截取数据
     * @param startIndex
     * @param endIndex
     */
    sliceTreeList: (startIndex: number, endIndex: number) => void;
    render(): React.ReactElement<{
        style: React.CSSProperties | undefined;
        clsPrefix?: string | undefined;
        nid?: string | undefined;
        uitype?: string | undefined;
        uirunmode?: string | undefined;
        className?: string | undefined;
        fieldid?: string | undefined;
        useCapture?: boolean | undefined;
        useWindow?: boolean | undefined;
    }, string | React.JSXElementConstructor<any>>;
}