text: /**
   * Copyright 2013-2014 Facebook, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * @typechecks
   * @providesModule ReactCSSTransitionGroup
   */
  
  "use strict";
  
  var React = require('React');
  
  var ReactTransitionGroup = require('ReactTransitionGroup');
  var ReactCSSTransitionGroupChild = require('ReactCSSTransitionGroupChild');
  
  var merge = require('merge');
  
  var ReactCSSTransitionGroup = React.createClass({
    displayName: 'ReactCSSTransitionGroup',
  
    propTypes: {
      transitionName: React.PropTypes.string.isRequired,
      transitionEnter: React.PropTypes.bool,
      transitionLeave: React.PropTypes.bool
    },
  
    getDefaultProps: function() {
      return {
        transitionEnter: true,
        transitionLeave: true
      };
    },
  
    _wrapChild: function(child) {
      // We need to provide this childFactory so that
      // ReactCSSTransitionGroupChild can receive updates to name, enter, and
      // leave while it is leaving.
      return ReactCSSTransitionGroupChild(
        {
          name: this.props.transitionName,
          enter: this.props.transitionEnter,
          leave: this.props.transitionLeave
        },
        child
      );
    },
  
    render: function() {
      return (
        ReactTransitionGroup(
          merge(this.props, {childFactory: this._wrapChild})
        )
      );
    }
  });
  
  module.exports = ReactCSSTransitionGroup;
  