"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useMutationObserver = exports.EuiMutationObserver = void 0;
var _react = require("react");
var _observer = require("../observer");
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); }
function _createSuper(t) { var r = _isNativeReflectConstruct(); return function () { var e, o = _getPrototypeOf(t); if (r) { var s = _getPrototypeOf(this).constructor; e = Reflect.construct(o, arguments, s); } else e = o.apply(this, arguments); return _possibleConstructorReturn(this, e); }; }
function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); } /*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 *
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */ /*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you 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.
 */
var EuiMutationObserver = /*#__PURE__*/function (_EuiObserver) {
  _inherits(EuiMutationObserver, _EuiObserver);
  var _super = _createSuper(EuiMutationObserver);
  function EuiMutationObserver() {
    var _this;
    _classCallCheck(this, EuiMutationObserver);
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }
    _this = _super.call.apply(_super, [this].concat(args));
    _defineProperty(_assertThisInitialized(_this), "name", 'EuiMutationObserver');
    // the `onMutation` prop may change while the observer is bound, abstracting
    // it out into a separate function means the current `onMutation` value is used
    _defineProperty(_assertThisInitialized(_this), "onMutation", function (records, observer) {
      _this.props.onMutation(records, observer);
    });
    _defineProperty(_assertThisInitialized(_this), "beginObserve", function () {
      var childNode = _this.childNode;
      _this.observer = makeMutationObserver(childNode, _this.props.observerOptions, _this.onMutation);
    });
    return _this;
  }
  return EuiMutationObserver;
}(_observer.EuiObserver);
exports.EuiMutationObserver = EuiMutationObserver;
var makeMutationObserver = function makeMutationObserver(node, _observerOptions, callback) {
  // IE11 and the MutationObserver polyfill used in Kibana (for Jest) implement
  // an older spec in which specifying `attributeOldValue` or `attributeFilter`
  // without specifying `attributes` results in a `SyntaxError`.
  // The following logic patches the newer spec in which `attributes: true` can be
  // implied when appropriate (`attributeOldValue` or `attributeFilter` is specified).
  var observerOptions = _objectSpread({}, _observerOptions);
  var needsAttributes = observerOptions.hasOwnProperty('attributeOldValue') || observerOptions.hasOwnProperty('attributeFilter');
  if (needsAttributes && !observerOptions.hasOwnProperty('attributes')) {
    observerOptions.attributes = true;
  }
  var observer = new MutationObserver(callback);
  observer.observe(node, observerOptions);
  return observer;
};
var useMutationObserver = function useMutationObserver(container, callback, observerOptions) {
  (0, _react.useEffect)(function () {
    if (container != null) {
      var observer = makeMutationObserver(container, observerOptions, callback);
      return function () {
        return observer.disconnect();
      };
    }
  },
  // ignore changing observerOptions
  // eslint-disable-next-line
  [container, callback]);
};
exports.useMutationObserver = useMutationObserver;