46 lines
1.1 KiB
JavaScript
46 lines
1.1 KiB
JavaScript
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule LazyRenderer
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*/
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'use strict';
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var React = require('React');
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var createReactClass = require('create-react-class');
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var PropTypes = require('prop-types');
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var TimerMixin = require('react-timer-mixin');
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var LazyRenderer = createReactClass({
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displayName: 'LazyRenderer',
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mixin: [TimerMixin],
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propTypes: {
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render: PropTypes.func.isRequired,
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},
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componentWillMount: function(): void {
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this.setState({
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_lazyRender : true,
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});
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},
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componentDidMount: function(): void {
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requestAnimationFrame(() => {
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this.setState({
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_lazyRender : false,
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});
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});
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},
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render: function(): ?React.Element {
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return this.state._lazyRender ? null : this.props.render();
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},
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});
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module.exports = LazyRenderer;
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