text: /*
   * Copyright (c) 2021 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.
   */
  
  #ifndef OHOS_AAFWK_DATAOBS_MANAGER_PROXY_H
  #define OHOS_AAFWK_DATAOBS_MANAGER_PROXY_H
  
  #include "dataobs_mgr_interface.h"
  #include "hilog_wrapper.h"
  #include "iremote_proxy.h"
  
  namespace OHOS {
  namespace AAFwk {
  /**
   * @class DataObsManagerProxy
   * DataObsManagerProxy.
   */
  class DataObsManagerProxy : public IRemoteProxy<IDataObsMgr> {
  public:
      explicit DataObsManagerProxy(const sptr<IRemoteObject> &impl) : IRemoteProxy<IDataObsMgr>(impl)
      {}
  
      virtual ~DataObsManagerProxy()
      {}
  
      /**
       * Registers an observer to DataObsMgr specified by the given Uri.
       *
       * @param uri, Indicates the path of the data to operate.
       * @param dataObserver, Indicates the IDataAbilityObserver object.
       *
       * @return Returns ERR_OK on success, others on failure.
       */
  
      virtual int RegisterObserver(const Uri &uri, const sptr<IDataAbilityObserver> &dataObserver);
  
      /**
       * Deregisters an observer used for DataObsMgr specified by the given Uri.
       *
       * @param uri, Indicates the path of the data to operate.
       * @param dataObserver, Indicates the IDataAbilityObserver object.
       *
       * @return Returns ERR_OK on success, others on failure.
       */
      virtual int UnregisterObserver(const Uri &uri, const sptr<IDataAbilityObserver> &dataObserver);
  
      /**
       * Notifies the registered observers of a change to the data resource specified by Uri.
       *
       * @param uri, Indicates the path of the data to operate.
       *
       * @return Returns ERR_OK on success, others on failure.
       */
      virtual int NotifyChange(const Uri &uri);
  
  private:
      bool WriteInterfaceToken(MessageParcel &data);
  
  private:
      static inline BrokerDelegator<DataObsManagerProxy> delegator_;
  };
  }  // namespace AAFwk
  }  // namespace OHOS
  #endif  // OHOS_AAFWK_DATAOBS_MANAGER_PROXY_H
  