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_CONFIGURATION_HOLDER_H
  #define OHOS_AAFWK_CONFIGURATION_HOLDER_H
  
  #include "aafwk_dummy_configuration.h"
  
  #include <memory>
  
  namespace OHOS {
  namespace AAFwk {
  /**
   * @class AbilityRecord
   * AbilityRecord records ability info and states and used to schedule ability life.
   */
  class ConfigurationHolder {
  public:
      ConfigurationHolder() = default;
      virtual ~ConfigurationHolder() = default;
  
      void UpdateConfiguration(const std::shared_ptr<DummyConfiguration> config);
      std::shared_ptr<DummyConfiguration> GetConfiguration() const;
      bool ProcessConfigurationChange();
      bool ForceProcessConfigurationChange(const std::shared_ptr<DummyConfiguration> &config);
  
  protected:
      virtual bool OnConfigurationChanged(const DummyConfiguration &config, unsigned int configChanges);
      virtual std::shared_ptr<ConfigurationHolder> GetParent() = 0;
      virtual unsigned int GetChildSize() = 0;
      virtual std::shared_ptr<ConfigurationHolder> FindChild(unsigned int index) = 0;
  
      static constexpr unsigned int CHANGE_CONFIG_ALL_CHANGED = 0xFFFFFFFF;
      static constexpr unsigned int CHANGE_CONFIG_NONE = 0x00000000;
      static constexpr unsigned int CHANGE_CONFIG_LOCALE = 0x00000001;
      static constexpr unsigned int CHANGE_CONFIG_LAYOUT = 0x00000002;
      static constexpr unsigned int CHANGE_CONFIG_FONTSIZE = 0x00000004;
      static constexpr unsigned int CHANGE_CONFIG_ORIENTATION = 0x00000008;
      static constexpr unsigned int CHANGE_CONFIG_DENSITY = 0x00000010;
  
  private:
      void DealUpdateConfiguration();
      bool ProcessConfigurationChangeInner(const std::shared_ptr<DummyConfiguration> &config);
  
  private:
      std::shared_ptr<DummyConfiguration> baseConfiguration_ = nullptr;
  };
  }  // namespace AAFwk
  }  // namespace OHOS
  #endif  // OHOS_AAFWK_CONFIGURATION_HOLDER_H