import * as React from 'react';
import { StateType, StyleType } from '../StyleConfig';
export interface CheckboxProps extends React.HTMLProps<HTMLInputElement> {
    circle?: boolean;
    state?: StateType | StyleType;
    /**
     * Attaches a ref to the `<input>` element. Only functions can be used here.
     *
     * ```js
     * <Checkbox inputRef={ref => { this.input = ref; }} />
     * ```
     */
    inputRef?: React.Ref<HTMLInputElement>;
    onChangeState?: (chk: boolean, val: string) => void;
}
export declare class Checkbox extends React.Component<CheckboxProps, {}> {
    static defaultProps: CheckboxProps;
    constructor(props: CheckboxProps);
    private onChange;
    render(): JSX.Element;
}