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group.tsx
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group.tsx
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import * as React from 'react';
import classNames from 'classnames';
import useMergedState from 'rc-util/lib/hooks/useMergedState';
import Radio from './radio';
import { RadioGroupProps, RadioChangeEvent, RadioGroupButtonStyle } from './interface';
import { ConfigContext } from '../config-provider';
import SizeContext from '../config-provider/SizeContext';
import { RadioGroupContextProvider } from './context';
import getDataOrAriaProps from '../_util/getDataOrAriaProps';
const RadioGroup = React.forwardRef<HTMLDivElement, RadioGroupProps>((props, ref) => {
const { getPrefixCls, direction } = React.useContext(ConfigContext);
const size = React.useContext(SizeContext);
const [value, setValue] = useMergedState(props.defaultValue, {
value: props.value,
});
const onRadioChange = (ev: RadioChangeEvent) => {
const lastValue = value;
const val = ev.target.value;
if (!('value' in props)) {
setValue(val);
}
const { onChange } = props;
if (onChange && val !== lastValue) {
onChange(ev);
}
};
const renderGroup = () => {
const {
prefixCls: customizePrefixCls,
className = '',
options,
optionType,
buttonStyle = 'outline' as RadioGroupButtonStyle,
disabled,
children,
size: customizeSize,
style,
id,
onMouseEnter,
onMouseLeave,
} = props;
const prefixCls = getPrefixCls('radio', customizePrefixCls);
const groupPrefixCls = `${prefixCls}-group`;
let childrenToRender = children;
// 如果存在 options, 优先使用
if (options && options.length > 0) {
const optionsPrefixCls = optionType === 'button' ? `${prefixCls}-button` : prefixCls;
childrenToRender = options.map(option => {
if (typeof option === 'string' || typeof option === 'number') {
// 此处类型自动推导为 string
return (
<Radio
key={option.toString()}
prefixCls={optionsPrefixCls}
disabled={disabled}
value={option}
checked={value === option}
>
{option}
</Radio>
);
}
// 此处类型自动推导为 { label: string value: string }
return (
<Radio
key={`radio-group-value-options-${option.value}`}
prefixCls={optionsPrefixCls}
disabled={option.disabled || disabled}
value={option.value}
checked={value === option.value}
style={option.style}
>
{option.label}
</Radio>
);
});
}
const mergedSize = customizeSize || size;
const classString = classNames(
groupPrefixCls,
`${groupPrefixCls}-${buttonStyle}`,
{
[`${groupPrefixCls}-${mergedSize}`]: mergedSize,
[`${groupPrefixCls}-rtl`]: direction === 'rtl',
},
className,
);
return (
<div
{...getDataOrAriaProps(props)}
className={classString}
style={style}
onMouseEnter={onMouseEnter}
onMouseLeave={onMouseLeave}
id={id}
ref={ref}
>
{childrenToRender}
</div>
);
};
return (
<RadioGroupContextProvider
value={{
onChange: onRadioChange,
value,
disabled: props.disabled,
name: props.name,
}}
>
{renderGroup()}
</RadioGroupContextProvider>
);
});
export default React.memo(RadioGroup);