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| import _ from 'lodash';
import React from 'react';
import { lucidClassNames } from '../../util/style-helpers';
import { createClass, getFirst, findTypes, rejectTypes, omitProps } from '../../util/component-types';
import reducers from './RadioGroup.reducers';
import RadioButtonLabeled from '../RadioButtonLabeled/RadioButtonLabeled';
import RadioButton from '../RadioButton/RadioButton';
const cx = lucidClassNames.bind('&-RadioGroup');
const {
func,
node,
number,
string,
} = React.PropTypes;
/**
* {"categories": ["controls", "toggles"], "madeFrom": ["RadioButton"]}
*
* This is a group of related radio buttons whose values are mutually exclusive
* and one whom must be selected any given moment in time.
* Any props that are not explicitly defined in `propTypes` are spread onto the
* root element.
*/
const RadioGroup = createClass({
displayName: 'RadioGroup',
components: {
RadioButton,
/**
* Support radio button labels as `RadioGroup.Label` component which can
* be provided as a child of a `RadioGroup.RadioButton` component.
*/
Label: createClass({
displayName: 'RadioGroup.Label',
propTypes: {
children: node,
},
}),
},
reducers,
propTypes: {
/**
* Should be instances of `RadioGroup.RadioButton` which supports the
* same props as `RadioButton`.
*/
children: node,
/**
* Appended to the component-specific class names set on the root
* element.
*/
className: string,
/**
* Passed along to the `RadioGroup.RadioButton` children whose `name`
* props are ignored.
*/
name: string,
/**
* Called when the user clicks on one of the child radio buttons or when
* they press the space key while one is in focus, and only called when
* the component is in the unselected state. `props` refers to the child
* `RadioButton` props.
*
* Signature: `(selectedIndex, { event, props }) => {}`
*/
onSelect: func,
/**
* Indicates which of the `RadioGroup.RadioButton` children is currently
* selected. The index of the last `RadioGroup.RadioButton` child with
* `isSelected` equal to true takes precedence over this prop.
*/
selectedIndex: number,
},
getDefaultProps() {
return {
name: _.uniqueId(`${cx('&')}-`),
onSelect: _.noop,
selectedIndex: 0,
};
},
render() {
const {
children,
className,
name,
selectedIndex,
...passThroughs,
} = this.props;
const radioButtonChildProps = _.map(findTypes(this.props, RadioGroup.RadioButton), 'props')
const selectedIndexFromChildren = _.findLastIndex(radioButtonChildProps, {
isSelected: true,
});
// If there are any `RadioGroup.RadioButton` children with `isSelected`
// equal to true, then the index of the last one should override the
// value of the `selectedIndex` prop.
const actualSelectedIndex = selectedIndexFromChildren !== -1
? selectedIndexFromChildren
: selectedIndex;
return (
<span
{...omitProps(passThroughs, RadioGroup)}
className={cx('&', className)}
>
{_.map(radioButtonChildProps, (radioButtonChildProp, index) => {
return (
<RadioButtonLabeled
{...radioButtonChildProp}
isSelected={actualSelectedIndex === index}
key={index}
callbackId={index}
name={name}
onSelect={this.handleSelected}
Label={_.get(getFirst(radioButtonChildProp, RadioGroup.Label), 'props', null)}
/>
);
})}
{rejectTypes(children, RadioGroup.RadioButton)}
</span>
);
},
handleSelected(isSelected, { event, props: childProps }) {
const { callbackId } = childProps;
const clickedRadioButtonProps = _.map(findTypes(this.props, RadioGroup.RadioButton), 'props')[callbackId];
// If the `RadioGroup.RadioButton` child has an `onSelect` prop that is
// a function, call that prior to calling the group's `onSelect` prop.
Eif (_.isFunction(clickedRadioButtonProps.onSelect)) {
clickedRadioButtonProps.onSelect(isSelected, { event, props: childProps });
}
this.props.onSelect(callbackId, { event, props: childProps });
},
});
export default RadioGroup;
|