44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
// 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;
|