react-select/lib/internal/ScrollBlock.js

A Select control built with and for ReactJS

'use strict';

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

var _emotion = require('emotion');

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 _NodeResolver = require('./NodeResolver');

var _NodeResolver2 = _interopRequireDefault(_NodeResolver);

var _index = require('./ScrollLock/index');

var _index2 = _interopRequireDefault(_index);

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; }

// NOTE:
// We shouldn't need this after updating to React v16.3.0, which introduces:
// - createRef() https://reactjs.org/docs/react-api.html#reactcreateref
// - forwardRef() https://reactjs.org/docs/react-api.html#reactforwardref

var ScrollBlock = function (_PureComponent) {
  _inherits(ScrollBlock, _PureComponent);

  function ScrollBlock() {
    var _ref;

    var _temp, _this, _ret;

    _classCallCheck(this, ScrollBlock);

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

    return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = ScrollBlock.__proto__ || Object.getPrototypeOf(ScrollBlock)).call.apply(_ref, [this].concat(args))), _this), _this.state = { touchScrollTarget: null }, _this.getScrollTarget = function (ref) {
      if (ref === _this.state.touchScrollTarget) return;
      _this.setState({ touchScrollTarget: ref });
    }, _this.blurSelectInput = function () {
      if (document.activeElement) {
        document.activeElement.blur();
      }
    }, _temp), _possibleConstructorReturn(_this, _ret);
  }

  // must be in state to trigger a re-render, only runs once per instance


  // this will close the menu when a user clicks outside


  _createClass(ScrollBlock, [{
    key: 'render',
    value: function render() {
      var _props = this.props,
          children = _props.children,
          isEnabled = _props.isEnabled;
      var touchScrollTarget = this.state.touchScrollTarget;

      // bail early if not enabled

      if (!isEnabled) return children;

      /*
       * Div
       * ------------------------------
       * blocks scrolling on non-body elements behind the menu
        * NodeResolver
       * ------------------------------
       * we need a reference to the scrollable element to "unlock" scroll on
       * mobile devices
        * ScrollLock
       * ------------------------------
       * actually does the scroll locking
       */
      return _react2.default.createElement(
        'div',
        null,
        _react2.default.createElement('div', {
          onClick: this.blurSelectInput,
          className: (0, _emotion.css)({ position: 'fixed', left: 0, bottom: 0, right: 0, top: 0 })
        }),
        _react2.default.createElement(
          _NodeResolver2.default,
          { innerRef: this.getScrollTarget },
          children
        ),
        touchScrollTarget ? _react2.default.createElement(_index2.default, { touchScrollTarget: touchScrollTarget }) : null
      );
    }
  }]);

  return ScrollBlock;
}(_react.PureComponent);

exports.default = ScrollBlock;