ant-design/components/radio/radio.tsx

import * as React from 'react';
import RcCheckbox from 'rc-checkbox';
import classNames from 'classnames';
import { composeRef } from 'rc-util/lib/ref';
import { useContext } from 'react';
import { FormItemInputContext } from '../form/context';
import { RadioProps, RadioChangeEvent } from './interface';
import { ConfigContext } from '../config-provider';
import RadioGroupContext, { RadioOptionTypeContext } from './context';
import devWarning from '../_util/devWarning';

const InternalRadio: React.ForwardRefRenderFunction<HTMLElement, RadioProps> = (props, ref) => {
  const groupContext = React.useContext(RadioGroupContext);
  const radioOptionTypeContext = React.useContext(RadioOptionTypeContext);

  const { getPrefixCls, direction } = React.useContext(ConfigContext);
  const innerRef = React.useRef<HTMLElement>();
  const mergedRef = composeRef(ref, innerRef);
  const { isFormItemInput } = useContext(FormItemInputContext);

  React.useEffect(() => {
    devWarning(!('optionType' in props), 'Radio', '`optionType` is only support in Radio.Group.');
  }, []);

  const onChange = (e: RadioChangeEvent) => {
    props.onChange?.(e);
    groupContext?.onChange?.(e);
  };

  const { prefixCls: customizePrefixCls, className, children, style, ...restProps } = props;
  const radioPrefixCls = getPrefixCls('radio', customizePrefixCls);
  const prefixCls =
    (groupContext?.optionType || radioOptionTypeContext) === 'button'
      ? `${radioPrefixCls}-button`
      : radioPrefixCls;

  const radioProps: RadioProps = { ...restProps };
  if (groupContext) {
    radioProps.name = groupContext.name;
    radioProps.onChange = onChange;
    radioProps.checked = props.value === groupContext.value;
    radioProps.disabled = props.disabled || groupContext.disabled;
  }
  const wrapperClassString = classNames(
    `${prefixCls}-wrapper`,
    {
      [`${prefixCls}-wrapper-checked`]: radioProps.checked,
      [`${prefixCls}-wrapper-disabled`]: radioProps.disabled,
      [`${prefixCls}-wrapper-rtl`]: direction === 'rtl',
      [`${prefixCls}-wrapper-in-form-item`]: isFormItemInput,
    },
    className,
  );

  return (
    // eslint-disable-next-line jsx-a11y/label-has-associated-control
    <label
      className={wrapperClassString}
      style={style}
      onMouseEnter={props.onMouseEnter}
      onMouseLeave={props.onMouseLeave}
    >
      <RcCheckbox {...radioProps} type="radio" prefixCls={prefixCls} ref={mergedRef} />
      {children !== undefined ? <span>{children}</span> : null}
    </label>
  );
};

const Radio = React.forwardRef<unknown, RadioProps>(InternalRadio);

Radio.displayName = 'Radio';

export default Radio;