/**
 * 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 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 this.transferPropsTo(
      ReactTransitionGroup(
        {childFactory: this._wrapChild},
        this.props.children
      )
    );
  }
});

module.exports = ReactCSSTransitionGroup;
