import * as React from "react";
import { IOWidget, Options, Fun, Option } from "./widget";
export interface StateOptions<s> extends Options {
    mergeNewProps?: (currentState: s, propsState: s) => s;
    onKeyDown?: Fun<s, Fun<KeyboardEvent, Option<s>>>;
}
export interface StatefulProps<s> {
    options?: StateOptions<s>;
    input: s;
    widget_s: IOWidget<s, s>;
    on_done_s: (output_s: s) => void;
}
export interface StatefulState<s> {
    value: s;
}
export declare class Stateful<s> extends React.Component<StatefulProps<s>, StatefulState<s>> {
    constructor(props: StatefulProps<s>, context: any);
    componentDidMount(): void;
    componentDidUpdate(): void;
    on_new_state(new_s: s): void;
    componentWillReceiveProps(nextProps: StatefulProps<s>): void;
    render(): JSX.Element;
}
export declare let stateful: <s>(options?: StateOptions<s> | undefined) => (widget_s: IOWidget<s, s>) => IOWidget<s, s>;