1 #ifndef DALI_SINGELTON_SERVICE_H
2 #define DALI_SINGELTON_SERVICE_H
5 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
23 #include <dali/public-api/object/base-handle.h>
28 namespace Internal DALI_INTERNAL
30 class ThreadLocalStorage;
34 * @brief Allows the registration of a class as a singleton
36 * @note This class is created by the Application class and is destroyed when the Application class is destroyed.
40 class DALI_CORE_API SingletonService : public BaseHandle
45 * @brief Create an uninitialized handle.
47 * This can be initialized by calling SingletonService::Get().
52 * @brief Retrieves a handle to the SingletonService.
54 * @return A handle to the SingletonService if it is available. This will be an empty handle if
55 * the service is not available.
57 static SingletonService Get();
62 * This is non-virtual since derived Handle types must not contain data or virtual methods.
67 * @brief Registers the singleton of Dali handle with its type info.
69 * The singleton will be kept alive for the lifetime of the service.
71 * @note This is not intended for application developers.
72 * @param[in] info The type info of the Dali handle generated by the compiler.
73 * @param[in] singleton The Dali handle to be registered
75 void Register( const std::type_info& info, BaseHandle singleton );
78 * @brief Unregisters all singletons.
80 * @note This is not intended for application developers.
85 * @brief Gets the singleton for the given type.
87 * @note This is not intended for application developers.
88 * @param[in] info The type info of the given type.
89 * @return the Dali handle if it is registered as a singleton or an uninitialized handle.
91 BaseHandle GetSingleton( const std::type_info& info ) const;
93 public: // Not intended for application developers
96 * @brief This constructor is used by SingletonService::Get().
97 * @param[in] singletonService A pointer to the internal singleton-service object.
99 explicit DALI_INTERNAL SingletonService( Internal::ThreadLocalStorage* singletonService );
104 #endif // DALI_SINGELTON_SERVICE_H