1 #ifndef __DALI_SINGELTON_SERVICE_H__
2 #define __DALI_SINGELTON_SERVICE_H__
5 * Copyright (c) 2018 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>
26 #include <dali/public-api/dali-adaptor-common.h>
31 namespace Internal DALI_INTERNAL
35 class SingletonService;
40 * @brief Allows the registration of a class as a singleton
42 * @note This class is created by the Application class and is destroyed when the Application class is destroyed.
46 class DALI_ADAPTOR_API SingletonService : public BaseHandle
51 * @brief Create an uninitialized handle.
53 * This can be initialized by calling SingletonService::Get().
58 * Create a SingletonService.
59 * This should only be called once by the Application class.
60 * @return A newly created SingletonService.
62 static Dali::SingletonService New();
65 * @brief Retrieves a handle to the SingletonService.
67 * @return A handle to the SingletonService if it is available. This will be an empty handle if
68 * the service is not available.
70 static SingletonService Get();
75 * This is non-virtual since derived Handle types must not contain data or virtual methods.
80 * @brief Registers the singleton of Dali handle with its type info.
82 * The singleton will be kept alive for the lifetime of the service.
84 * @note This is not intended for application developers.
85 * @param[in] info The type info of the Dali handle generated by the compiler.
86 * @param[in] singleton The Dali handle to be registered
88 void Register( const std::type_info& info, BaseHandle singleton );
91 * @brief Unregisters all singletons.
93 * @note This is not intended for application developers.
98 * @brief Gets the singleton for the given type.
100 * @note This is not intended for application developers.
101 * @param[in] info The type info of the given type.
102 * @return the Dali handle if it is registered as a singleton or an uninitialized handle.
104 BaseHandle GetSingleton( const std::type_info& info ) const;
106 public: // Not intended for application developers
109 * @brief This constructor is used by SingletonService::Get().
110 * @param[in] singletonService A pointer to the internal singleton-service object.
112 explicit DALI_INTERNAL SingletonService( Internal::Adaptor::SingletonService* singletonService );
117 #endif // __DALI_SINGELTON_SERVICE_H__