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.
22 #include <dali/public-api/object/base-handle.h>
27 namespace Internal DALI_INTERNAL
29 class ThreadLocalStorage;
33 * @brief Allows the registration of a class as a singleton
35 * @note This class is created by the Application class and is destroyed when the Application class is destroyed.
39 class DALI_CORE_API SingletonService : public BaseHandle
43 * @brief Create an uninitialized handle.
45 * This can be initialized by calling SingletonService::Get().
50 * @brief Retrieves a handle to the SingletonService.
52 * @return A handle to the SingletonService if it is available. This will be an empty handle if
53 * the service is not available.
55 static SingletonService Get();
60 * This is non-virtual since derived Handle types must not contain data or virtual methods.
65 * @brief Registers the singleton of Dali handle with its type info.
67 * The singleton will be kept alive for the lifetime of the service.
69 * @note This is not intended for application developers.
70 * @param[in] info The type info of the Dali handle generated by the compiler.
71 * @param[in] singleton The Dali handle to be registered
73 void Register(const std::type_info& info, BaseHandle singleton);
76 * @brief Unregisters all singletons.
78 * @note This is not intended for application developers.
83 * @brief Gets the singleton for the given type.
85 * @note This is not intended for application developers.
86 * @param[in] info The type info of the given type.
87 * @return the Dali handle if it is registered as a singleton or an uninitialized handle.
89 BaseHandle GetSingleton(const std::type_info& info) const;
91 public: // Not intended for application developers
93 * @brief This constructor is used by SingletonService::Get().
94 * @param[in] singletonService A pointer to the internal singleton-service object.
96 explicit DALI_INTERNAL SingletonService(Internal::ThreadLocalStorage* singletonService);
101 #endif // DALI_SINGELTON_SERVICE_H