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@@ -0,0 +1,34 @@
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+// Like react-motion's Motion, but checks to see if the user prefers
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+// reduced motion and uses a cross-fade in those cases.
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+
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+import Motion from 'react-motion/lib/Motion';
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+import { connect } from 'react-redux';
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+
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+const stylesToKeep = ['opacity', 'backgroundOpacity'];
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+
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+const extractValue = (value) => {
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+ // This is either an object with a "val" property or it's a number
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+ return (typeof value === 'object' && value && 'val' in value) ? value.val : value;
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+};
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+
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+const mapStateToProps = (state, ownProps) => {
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+ const reduceMotion = state.getIn(['meta', 'reduce_motion']);
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+
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+ if (reduceMotion) {
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+ const { style, defaultStyle } = ownProps;
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+
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+ Object.keys(style).forEach(key => {
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+ if (stylesToKeep.includes(key)) {
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+ return;
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+ }
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+ // If it's setting an x or height or scale or some other value, we need
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+ // to preserve the end-state value without actually animating it
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+ style[key] = defaultStyle[key] = extractValue(style[key]);
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+ });
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+
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+ return { style, defaultStyle };
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+ }
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+ return {};
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+};
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+
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+export default connect(mapStateToProps)(Motion);
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