1 #ifndef __DALI_TYPE_REGISTRY_H__
2 #define __DALI_TYPE_REGISTRY_H__
5 // Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 // Licensed under the Flora License, Version 1.0 (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://floralicense.org/license/
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.
25 #include <dali/public-api/object/base-handle.h>
26 #include <dali/public-api/object/type-info.h>
28 namespace Dali DALI_IMPORT_API
31 namespace Internal DALI_INTERNAL
37 * @brief The TypeRegistry allows registration of type instance creation functions.
39 * These can then be created later by name and down cast to the appropriate type.
41 * Usage: (Registering)
45 * // Note: object construction in namespace scope is defined in a translation unit as being
46 * // in appearance order (C++ standard 3.6/2). So TypeRegistration is declared first in
47 * // the cpp file below. Signal, action and property declarations follow in any order.
50 * TypeRegistration myActorType(typeid(MyActor), typeid(Actor), CreateMyActor );
52 * SignalConnectorType( myActorType, "highlighted", ConnectSignalForMyActor );
53 * TypeAction( myActorType, "open", DoMyActorAction );
54 * TypeAction( myActorType, "close", DoMyActorAction );
55 * PropertyRegistration( myActorType, "status", PropertyRegistration::START_INDEX, Property::BOOLEAN, SetPropertyFunction, GetPropertyFunction );
62 * TypeRegistry::TypeInfo type = TypeRegistry::Get().GetTypeInfo("MyActor");
63 * MyActor a = MyActor::DownCast(type.CreateInstance());
72 * Actors that inherit from the CustomActor framework must ensure the implementation
73 * class has an identical name to the Actor class. This is to ensure the class can be
74 * found at runtime for signals and actions. Otherwise these will silently fail.
76 * As namespaces are discarded the convention is to use a namespace ie
78 * 'class MyActor {}; namespace Internal { class MyActor {}; }'
80 * Warning: this arrangement will silently fail
82 * 'class MyActor {}; class MyActorImpl {};'
86 * Signal and action names follow properties and are by convention lower case hyphen
87 * separated ie 'next-page'. This maintains consistency with the scripted interface.
90 class TypeRegistry : public BaseHandle
93 typedef std::vector<std::string> NameContainer; ///< Container of type names
96 * @brief Get Type Registry handle.
98 * @return TypeRegistry handle
100 static TypeRegistry Get();
103 * @brief Allows the creation of an empty typeRegistry handle.
113 * @copydoc Dali::BaseHandle::operator=
115 using BaseHandle::operator=;
118 * @brief Get TypeInfo for a registered type.
120 * @param [in] uniqueTypeName A unique type name
121 * @return TypeInfo if the type exists otherwise an empty handle
123 TypeInfo GetTypeInfo( const std::string &uniqueTypeName );
126 * @brief Get TypeInfo for a registered type.
128 * @param [in] registerType The registered type info
129 * @return TypeInfo if the type exists otherwise an empty handle
131 TypeInfo GetTypeInfo( const std::type_info& registerType );
134 * @brief Get type names.
136 * @return list of known types by name
138 NameContainer GetTypeNames() const;
140 public: // Not intended for application developers
143 * @brief This constructor is used by Dali Get() method.
145 * @param [in] typeRegistry A pointer to a Dali resource
147 explicit DALI_INTERNAL TypeRegistry(Internal::TypeRegistry*typeRegistry);
151 * @brief Register a type from type info.
153 class TypeRegistration
157 * @brief Constructor registers the type creation function.
159 * @param [in] registerType the type info for the type to be registered
160 * @param [in] baseType the base type info of registerType
161 * @param [in] f registerType instance creation function
163 TypeRegistration( const std::type_info& registerType, const std::type_info& baseType,
164 TypeInfo::CreateFunction f );
167 * @brief Constructor registers the type creation function.
169 * @param [in] registerType the type info for the type to be registered
170 * @param [in] baseType the base type info of registerType
171 * @param [in] f registerType instance creation function
172 * @param [in] callCreateOnInit If true the creation function is called as part of Dali initialisation
174 TypeRegistration( const std::type_info& registerType, const std::type_info& baseType,
175 TypeInfo::CreateFunction f, bool callCreateOnInit );
178 * @brief Constructor registers the type creation function for a named class or type.
180 * This allows types to be created dynamically from script. The name must be
181 * unique for successful registration.
182 * @param [in] name the name of the type to be registered
183 * @param [in] baseType the base type info of registerType
184 * @param [in] f registerType instance creation function
186 TypeRegistration( const std::string& name, const std::type_info& baseType,
187 TypeInfo::CreateFunction f );
190 * @brief The name the type is registered under (derived from type_info).
192 * @return the registered name or empty if unregistered
194 const std::string RegisteredName() const;
197 TypeRegistry mReference; ///< Reference to the type registry
198 std::string mName; ///< Name of the type
202 * @brief Register a signal connector function to a registered type.
204 class SignalConnectorType
208 * @brief Constructor registers the type creation function.
210 * @param [in] typeRegistration The TypeRegistration object
211 * @param [in] name The signal name
212 * @param [in] func The signal connector function
214 SignalConnectorType( TypeRegistration& typeRegistration, const std::string& name, TypeInfo::SignalConnectorFunctionV2 func );
218 * @brief Register an action function.
224 * @brief Constructor registers the type creation function.
226 * @param [in] registered The TypeRegistration object
227 * @param [in] name The action name
228 * @param [in] f The action function
230 TypeAction( TypeRegistration ®istered, const std::string &name, TypeInfo::ActionFunction f);
234 * @brief Register a property for the given type.
236 class PropertyRegistration
241 * @brief This constructor registers the property with the registered type.
243 * This constructor is for event-thread only properties where the
244 * value of the property can be retrieved and set via specified
247 * Functions of the following type may be used for setFunc and getFunc respectively:
249 * void SetProperty( BaseObject* object, Property::Index index, const Property::Value& value );
250 * Property::Value GetProperty( BaseObject* object, Property::Index index );
253 * @param [in] registered The TypeRegistration object
254 * @param [in] name The name of the property
255 * @param [in] index The property index. Must be a value between PROPERTY_REGISTRATION_START_INDEX and PROPERTY_REGISTRATION_MAX_INDEX inclusive.
256 * @param [in] type The property value type.
257 * @param [in] setFunc The function to call when setting the property. If NULL, then the property becomes read-only.
258 * @param [in] getFunc The function to call to retrieve the current value of the property. MUST be provided.
260 * @note The "index" value must be between START_INDEX and MAX_INDEX inclusive.
261 * @note If "setFunc" is NULL, then the property becomes a read-only property.
262 * @note "getFunc" MUST be provided
264 * @pre "registered" must be registered with the TypeRegistry.
266 PropertyRegistration( TypeRegistration& registered,
267 const std::string& name, Property::Index index, Property::Type type,
268 TypeInfo::SetPropertyFunction setFunc, TypeInfo::GetPropertyFunction getFunc );