import { ReactNode, TextareaHTMLAttributes, ChangeEvent } from 'react';
import { EventListenerHandler } from '@befe/brick-utils';
import { BaseSize, ConfiguredComponent } from '@befe/brick-core';
import { ResizeObserver } from '@juggle/resize-observer';
export declare const TEXTAREA_SIZES: readonly ["sm", "md"];
type TextareaSize = BaseSize;
type NativeTextareaProps = Omit<TextareaHTMLAttributes<HTMLTextAreaElement>, 'style' | 'defaultValue'>;
interface NodeStyleType {
    boxSizing: string;
    paddingSize: number;
    borderSize: number;
    sizingStyle: string;
}
export declare function getNodeStyle(node?: Element): NodeStyleType;
export interface TextareaProps extends NativeTextareaProps {
    /**
     * 自定义 class
     */
    className?: string;
    /**
     * 输入值
     */
    value?: string;
    /**
     * 默认值
     */
    defaultValue?: string;
    /**
     * 尺寸
     * use config context `baseSize` as default
     */
    size?: TextareaSize;
    /**
     * 是否禁用
     */
    disabled?: boolean;
    /**
     * 是否只读
     */
    readOnly?: boolean;
    /**
     * 文本框状态
     */
    status?: 'normal' | 'error';
    /**
     * @todo
     * 提示内容，基本样式会跟随 status
     */
    hint?: ReactNode;
    /**
     * 行数
     */
    rows?: number;
    /**
     * 不提供列数
     */
    /**
     * 最小行数
     *
     * **注意** 设置了最小行数，即启用了高度自适应
     */
    minRows?: number;
    /**
     * 最大行数
     */
    maxRows?: number;
    /**
     * 最大输入长度，
     *
     * **注意** 仅做字数提示
     */
    maxLength?: number;
    /**
     * 字数计数函数
     */
    textCounter?: (value: string) => number;
    /**
     * @private 无提供必要性
     * 是否允许溢出输入
     */
    /**
     * 值变化时的回调
     */
    onChange?: (e: ChangeEvent<HTMLTextAreaElement>) => void;
}
export declare class Textarea extends ConfiguredComponent<TextareaProps> {
    static displayName: string;
    static defaultProps: {
        className: string;
        defaultValue: string;
        status: string;
        rows: number;
    };
    elemTextarea: HTMLTextAreaElement;
    shadowTextarea: HTMLTextAreaElement;
    windowResizeHandler: EventListenerHandler | null;
    textareaWrap: import("react").RefObject<HTMLDivElement>;
    state: {
        value: string | undefined;
        singleRowHeight: number;
        paddingSize: number;
        borderSize: number;
        minHeight: number;
        maxHeight: number;
        height: string;
        overflowY: string;
    };
    resizeObserver: ResizeObserver;
    static getDerivedStateFromProps(nextProps: TextareaProps): Partial<TextareaProps> | null;
    get className(): string;
    get size(): BaseSize;
    get textCounter(): TextareaProps['textCounter'];
    get currentCount(): number;
    get remainingContent(): string;
    componentDidMount(): void;
    componentDidUpdate(prevProps: Readonly<TextareaProps>): void;
    componentWillUnmount(): void;
    refTextarea: (node: HTMLTextAreaElement) => void;
    refShadowTextarea: (node: HTMLTextAreaElement) => void;
    calculateNodeHeight: () => void;
    resize(): void;
    handleChange: (e: ChangeEvent<HTMLTextAreaElement>, callback?: () => void) => void;
    /**
     * focus textarea element
     * @public
     */
    focus(): void;
    /**
     * blur textarea element
     * @public
     */
    blur(): void;
    /**
     * select textarea element
     * @public
     */
    select(): void;
    renderTextarea(): import("react/jsx-runtime").JSX.Element;
    renderShadowTextarea(): import("react/jsx-runtime").JSX.Element | null;
    renderTextareaWrap(): import("react/jsx-runtime").JSX.Element;
    renderWordCount(): import("react/jsx-runtime").JSX.Element | null;
    renderHint(): import("react/jsx-runtime").JSX.Element;
    render(): import("react/jsx-runtime").JSX.Element;
}
export {};