newsroom/node_modules/react/lib/ReactCSSTransitionGroup.js

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */

'use strict';

var _assign = require('object-assign');

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var React = require('./React');
var propTypesFactory = require('prop-types/factory');
var PropTypes = propTypesFactory(React.isValidElement);

var ReactTransitionGroup = require('./ReactTransitionGroup');
var ReactCSSTransitionGroupChild = require('./ReactCSSTransitionGroupChild');

function createTransitionTimeoutPropValidator(transitionType) {
  var timeoutPropName = 'transition' + transitionType + 'Timeout';
  var enabledPropName = 'transition' + transitionType;

  return function (props) {
    // If the transition is enabled
    if (props[enabledPropName]) {
      // If no timeout duration is provided
      if (props[timeoutPropName] == null) {
        return new Error(timeoutPropName + " wasn't supplied to ReactCSSTransitionGroup: " + "this can cause unreliable animations and won't be supported in " + 'a future version of React. See ' + 'https://fb.me/react-animation-transition-group-timeout for more ' + 'information.');

        // If the duration isn't a number
      } else if (typeof props[timeoutPropName] !== 'number') {
        return new Error(timeoutPropName + ' must be a number (in milliseconds)');
      }
    }
  };
}

/**
 * An easy way to perform CSS transitions and animations when a React component
 * enters or leaves the DOM.
 * See https://facebook.github.io/react/docs/animation.html#high-level-api-reactcsstransitiongroup
 */

var ReactCSSTransitionGroup = function (_React$Component) {
  _inherits(ReactCSSTransitionGroup, _React$Component);

  function ReactCSSTransitionGroup() {
    var _temp, _this, _ret;

    _classCallCheck(this, ReactCSSTransitionGroup);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = _possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this._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 React.createElement(ReactCSSTransitionGroupChild, {
        name: _this.props.transitionName,
        appear: _this.props.transitionAppear,
        enter: _this.props.transitionEnter,
        leave: _this.props.transitionLeave,
        appearTimeout: _this.props.transitionAppearTimeout,
        enterTimeout: _this.props.transitionEnterTimeout,
        leaveTimeout: _this.props.transitionLeaveTimeout
      }, child);
    }, _temp), _possibleConstructorReturn(_this, _ret);
  }

  ReactCSSTransitionGroup.prototype.render = function render() {
    return React.createElement(ReactTransitionGroup, _assign({}, this.props, { childFactory: this._wrapChild }));
  };

  return ReactCSSTransitionGroup;
}(React.Component);

ReactCSSTransitionGroup.displayName = 'ReactCSSTransitionGroup';
ReactCSSTransitionGroup.propTypes = {
  transitionName: ReactCSSTransitionGroupChild.propTypes.name,

  transitionAppear: PropTypes.bool,
  transitionEnter: PropTypes.bool,
  transitionLeave: PropTypes.bool,
  transitionAppearTimeout: createTransitionTimeoutPropValidator('Appear'),
  transitionEnterTimeout: createTransitionTimeoutPropValidator('Enter'),
  transitionLeaveTimeout: createTransitionTimeoutPropValidator('Leave')
};
ReactCSSTransitionGroup.defaultProps = {
  transitionAppear: false,
  transitionEnter: true,
  transitionLeave: true
};


module.exports = ReactCSSTransitionGroup;