import React, { ReactNode } from 'react';
import { StandardProps } from '../@types/common';
export declare type Mode = 'top' | 'bottom';
/**
 * @title Sticky
 */
export interface StickyProps extends StandardProps {
    /**
     * @en Extend style. The default z-Index after triggering the float is 900, and you can modify the z-Index of the style to change.
     * @cn 扩展样式。触发浮动后的默认 zIndex 为900，修改 style的 zIndex 来改变。
     */
    style?: React.CSSProperties;
    /**
     * @en Offsets from the bottom.
     * @cn 距离底部多少偏移量触发
     */
    bottom?: number;
    /**
     * @en Attached target. the default is the document.body. You can pass in an HTMLElement or css selector, and the target must be an ancestor node of the Sticky component.
     * @cn 附着的目标，默认为 document.body。可以传入 HTMLElement 或者 css selector，target 必须为 Sticky 组件的祖先节点
     */
    target?: string | HTMLElement;
    /**
     * @en Offsets from the top.
     * @cn 距离顶部多少偏移量触发
     */
    top?: number;
    /**
     * @en use css position:sticky while target is ordered
     * @cn 在指定 target 下，是否采用 css 方式实现附着效果
     * @default true
     */
    css?: boolean;
    /**
     * @en When the adsorption effect, trigger the callback，this method is invalid when native sticky is used
     * @cn 吸附效果时，触发该回调，当使用原生 sticky 时该方法无效
     */
    onChange?: (isSticky: boolean) => void;
    /**
     * @en children
     * @cn 子元素
     */
    children?: ReactNode;
    /**
     * @inner 内部使用
     */
    needResetPostion?: boolean;
}
export declare class Sticky extends React.Component<StickyProps, {}> {
    render(): JSX.Element;
}
export declare type StickyType = typeof Sticky;