react-misc-toolbox/dist/DetectVisibility.js

[ ] imageviewer | gradual scroll [ ] imageviewer | cancellable scroll

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of');

var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf);

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');

var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);

var _inherits2 = require('babel-runtime/helpers/inherits');

var _inherits3 = _interopRequireDefault(_inherits2);

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _recompose = require('recompose');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var DetectVisibility = function (_React$Component) {
  (0, _inherits3.default)(DetectVisibility, _React$Component);

  function DetectVisibility() {
    var _ref;

    var _temp, _this, _ret;

    (0, _classCallCheck3.default)(this, DetectVisibility);

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

    return _ret = (_temp = (_this = (0, _possibleConstructorReturn3.default)(this, (_ref = DetectVisibility.__proto__ || (0, _getPrototypeOf2.default)(DetectVisibility)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
      bottomIsVisible: true
    }, _this.handleScroll = function () {
      var _this2 = _this,
          _this2$props = _this2.props,
          containerSelector = _this2$props.containerSelector,
          isLocked = _this2$props.isLocked;

      var containerElement = document.querySelector(containerSelector);

      if (!isLocked) {
        if (containerElement.getBoundingClientRect().bottom > 0) {
          _this.setState({ bottomIsVisible: true });
        } else {
          _this.setState({ bottomIsVisible: false });
        }
      }
    }, _this.componentDidMount = function () {
      var _this3 = _this,
          containerSelector = _this3.props.containerSelector;

      var containerElement = document.querySelector(containerSelector);
      if (containerElement.getBoundingClientRect().bottom > 0) {
        _this.setState({ bottomIsVisible: true });
      } else {
        _this.setState({ bottomIsVisible: false });
      }
      typeof window !== 'undefined' && window.addEventListener('scroll', _this.handleScroll);
    }, _this.componentWillUnmount = function () {
      window.removeEventListener('scroll', _this.handleScroll);
    }, _temp), (0, _possibleConstructorReturn3.default)(_this, _ret);
  }

  (0, _createClass3.default)(DetectVisibility, [{
    key: 'render',
    value: function render() {
      var bottomIsVisible = this.state.bottomIsVisible,
          children = this.props.children;

      return children({ bottomIsVisible: bottomIsVisible });
    }
  }]);
  return DetectVisibility;
}(_react2.default.Component);

DetectVisibility.propTypes = {
  containerSelector: _propTypes2.default.string.isRequired
};
var enhance = (0, _recompose.compose)((0, _recompose.onlyUpdateForKeys)(['containerSelector']));
exports.default = enhance(DetectVisibility);