52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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import React, {PureComponent} from 'react';
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import PropTypes from 'prop-types';
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import {Animated} from 'react-native';
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export const FADE_DURATION = 100;
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export default class Fade extends PureComponent {
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static propTypes = {
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children: PropTypes.node.isRequired,
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style: PropTypes.object,
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visible: PropTypes.bool.isRequired,
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};
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constructor(props) {
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super(props);
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this.state = {
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fadeAnim: new Animated.Value(props.visible ? 1 : 0),
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};
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}
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componentDidUpdate(prevProps) {
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if (prevProps.visible !== this.props.visible) {
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Animated.timing(
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this.state.fadeAnim,
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{
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toValue: prevProps.visible ? 0 : 1,
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duration: FADE_DURATION,
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useNativeDriver: true,
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}
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).start();
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}
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}
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render() {
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const {fadeAnim} = this.state;
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return (
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<Animated.View
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style={{
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...this.props.style,
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opacity: fadeAnim,
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transform: [{scale: fadeAnim}],
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}}
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>
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{this.props.children}
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</Animated.View>
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);
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}
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}
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