text: /*
   * Copyright (c) 2020 Huawei Device Co., Ltd.
   * Licensed 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.
   */
  
  #include "directive/directive_watcher_callback.h"
  
  namespace OHOS {
  namespace ACELite {
  const int DirectiveWatcherCallback::CALLBACK_ARGS_LENGTH = 3;
  const int DirectiveWatcherCallback::ARG_IDX_OPTIONS = 2;
  
  JSValue DirectiveWatcherCallback::Handler(const JSValue func,
                                            const JSValue context,
                                            const JSValue args[],
                                            const JSSize argsSize)
  {
      if (argsSize != CALLBACK_ARGS_LENGTH) {
          return JSUndefined::Create();
      }
  
      JSValue options = args[ARG_IDX_OPTIONS];
  
      JSValue parentElement = JSObject::Get(options, DescriptorUtils::WATCHER_OPTION_ELEMENT);
      JSValue descriptor = JSObject::Get(options, DescriptorUtils::WATCHER_OPTION_DESCRIPTOR);
  
      Component *component = ComponentUtils::GetComponentFromBindingObject(parentElement);
      if (component) {
          component->HandleChildrenChange(descriptor);
      }
      JSRelease(descriptor);
      JSRelease(parentElement);
      return JSUndefined::Create();
  }
  } // namespace ACELite
  } // namespace OHOS
  