import React, { Component } from 'react';
export interface ShowMoreProps {
    children: React.ReactChild;
    ellipsisText?: string;
    className?: string;
    ellipsisClassName?: string;
    lines?: number;
    width?: number;
    title?: string;
    expandable?: boolean;
    onAfterChange?: () => void;
    onAfterMounted?: () => void;
}
interface ShowMoreStates {
    isTruncated: boolean;
    hiddenTextElement: boolean;
    previewText: string;
    hiddenText: string;
}
export default class ShowMore extends Component<ShowMoreProps, ShowMoreStates> {
    static defaultProps: {
        children: string;
        ellipsisText: string;
        lines: number;
        width: number;
        expandable: boolean;
    };
    prefixCls: string;
    targetElement: HTMLSpanElement | null;
    textElement: HTMLSpanElement | null;
    setTargetElement: (el: HTMLSpanElement) => HTMLSpanElement;
    setChildrenElement: (el: HTMLSpanElement) => HTMLSpanElement;
    canvasContext: CanvasRenderingContext2D;
    timer: any;
    targetWidth: number;
    constructor(props: ShowMoreProps);
    componentDidMount(): void;
    componentDidUpdate(prevProps: ShowMoreProps): void;
    componentWillUnmount(): void;
    setHiddenTextStatus: () => void;
    delayCalculate(): void;
    onChange: () => void;
    innerText: (node: HTMLSpanElement) => string;
    calcTargetWidth: (callback?: () => void) => void;
    measureWidth: (text: string) => number;
    getLines: (targetWidth: number) => {
        lines: any[];
        hiddenLineStr: string;
    };
    renderLine: (line: React.ReactChild, i: number, arr: React.ReactChild[]) => JSX.Element | JSX.Element[];
    setRenderText: (callback: () => void, isHidden?: boolean) => void;
    render(): JSX.Element;
}
export {};