text: 'use strict';
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  
  var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
  
  var _react = require('react');
  
  var _react2 = _interopRequireDefault(_react);
  
  var _exenv = require('exenv');
  
  var _TouchScrollable = require('./TouchScrollable');
  
  var _withLockSheet = require('./withLockSheet');
  
  var _withLockSheet2 = _interopRequireDefault(_withLockSheet);
  
  var _withTouchListeners = require('./withTouchListeners');
  
  var _withTouchListeners2 = _interopRequireDefault(_withTouchListeners);
  
  var _utils = require('./utils');
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  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 ScrollLock = function (_PureComponent) {
    _inherits(ScrollLock, _PureComponent);
  
    function ScrollLock() {
      _classCallCheck(this, ScrollLock);
  
      return _possibleConstructorReturn(this, (ScrollLock.__proto__ || Object.getPrototypeOf(ScrollLock)).apply(this, arguments));
    }
  
    _createClass(ScrollLock, [{
      key: 'componentDidMount',
      value: function componentDidMount() {
        if (!_exenv.canUseDOM) return;
        this.initialHeight = window.innerHeight;
      }
    }, {
      key: 'componentWillUnmount',
      value: function componentWillUnmount() {
        var offset = window.innerHeight - this.initialHeight;
  
        // adjust scroll if the window has been resized since the lock was engaged
        // e.g. mobile safari dynamic chrome heights
        if (offset) {
          window.scrollTo(0, window.pageYOffset + offset);
        }
  
        // reset the initial height in case this scroll lock is used again
        this.initialHeight = window.innerHeight;
      }
    }, {
      key: 'render',
      value: function render() {
        var children = this.props.children;
  
  
        return children ? _react2.default.createElement(
          _TouchScrollable.TouchScrollable,
          null,
          children
        ) : null;
      }
    }]);
  
    return ScrollLock;
  }(_react.PureComponent);
  
  // attach the stylesheet and inject styles on [un]mount
  
  
  var compose = (0, _utils.pipe)(_withTouchListeners2.default, _withLockSheet2.default);
  var SheetLock = compose(ScrollLock);
  
  // toggle the lock based on `isActive` prop
  var LockToggle = function LockToggle(props) {
    return props.isActive ? _react2.default.createElement(SheetLock, props) : props.children;
  };
  
  LockToggle.defaultProps = {
    accountForScrollbars: true,
    children: null,
    isActive: true
  };
  
  exports.default = LockToggle;