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// Like react-motion's Motion, but reduces all animations to cross-fades
// for the benefit of users with motion sickness.
import React from 'react';
import Motion from 'react-motion/lib/Motion';
import PropTypes from 'prop-types';
const stylesToKeep = ['opacity', 'backgroundOpacity'];
const extractValue = (value) => {
// This is either an object with a "val" property or it's a number
return (typeof value === 'object' && value && 'val' in value) ? value.val : value;
};
class ReducedMotion extends React.Component {
static propTypes = {
defaultStyle: PropTypes.object,
style: PropTypes.object,
children: PropTypes.func,
}
render() {
const { style, defaultStyle, children } = this.props;
Object.keys(style).forEach(key => {
if (stylesToKeep.includes(key)) {
return;
}
// If it's setting an x or height or scale or some other value, we need
// to preserve the end-state value without actually animating it
style[key] = defaultStyle[key] = extractValue(style[key]);
});
return (
<Motion style={style} defaultStyle={defaultStyle}>
{children}
</Motion>
);
}
}
export default ReducedMotion;
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