import { Component } from 'react';
import { AffixProps, AffixState } from './iAffix';
declare function noop(): void;
declare class Affix extends Component<AffixProps, AffixState> {
    constructor(props: AffixProps);
    static defaultProps: {
        horizontal: boolean;
        target: () => Window & typeof globalThis;
        onChange: typeof noop;
        onTargetChange: typeof noop;
        zIndex: number;
        canHidden: boolean;
        childrenRef: null;
        initCalc: boolean;
    };
    offsetTopCp?: number;
    resizeHandler: {
        remove: () => void;
    };
    scrollHandler: {
        remove: () => void;
    };
    componentDidMount(): void;
    componentWillReceiveProps(nextProps: AffixProps): void;
    componentWillUnmount(): void;
    /**
     * 获取container
     * @return {[type]} [description]
     */
    getContainerDOM: (nextProps?: AffixProps) => Element | Text | null;
    /**
     * 第一次 和 每次srcoll和resize也会执行该方法
     * initTop,initLeft，marginTop,marginLeft都是不变的
     * @return {[type]} [description]
     */
    getInitPosition(nextProps?: AffixProps, flag?: boolean): void;
    /**
     * [description]主要用于处理scroll以及reseize事件重新计算布局
     * @param  {[object]} evt [scroll或者resize事件]
     * 有两个函数：onChange 和 onTargetChange;
     */
    handleTargetChange: (evt: MouseEvent) => void;
    /**
     * 只有上面的方法handleTargetChange使得affixed=ture才会执行
     * @return {[type]} [description]
     */
    calculate: () => {
        fixStyle: {};
        boxStyle: {};
    };
    render(): JSX.Element;
}
export default Affix;