// Licensed to the Software Freedom Conservancy (SFC) under one // or more contributor license agreements. See the NOTICE file // distributed with this work for additional information // regarding copyright ownership. The SFC 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 // // 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.

(function () {

const observer = new MutationObserver((mutations) => {
  for (const mutation of mutations) {
    switch (mutation.type) {
      case 'attributes':
        // Don't report our own attribute has changed.
        if (mutation.attributeName === "data-__webdriver_id") {
          break;
        }
        const curr = mutation.target.getAttribute(mutation.attributeName);
        var id = mutation.target.dataset.__webdriver_id
        if (!id) {
          id = Math.random().toString(36).substring(2) + Date.now().toString(36);
          mutation.target.dataset.__webdriver_id = id;
        }
        const json = JSON.stringify({
          'target': id,
          'name': mutation.attributeName,
          'value': curr,
          'oldValue': mutation.oldValue
        });
        __webdriver_attribute(json);
        break;
      default:
        break;
    }
  }
});

observer.observe(document, {
  'attributes': true,
  'attributeOldValue': true,
  'characterData': true,
  'characterDataOldValue': true,
  'childList': true,
  'subtree': true
});

})();