1 #ifndef __DALI_TYPE_REGISTRY_H__
2 #define __DALI_TYPE_REGISTRY_H__
5 * Copyright (c) 2015 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.
26 #include <dali/public-api/object/base-handle.h>
27 #include <dali/public-api/object/type-info.h>
32 namespace Internal DALI_INTERNAL
38 * @brief The TypeRegistry allows registration of type instance creation functions.
40 * These can then be created later by name and down cast to the appropriate type.
42 * Usage: (Registering)
46 * // Note: object construction in namespace scope is defined in a translation unit as being
47 * // in appearance order (C++ standard 3.6/2). So TypeRegistration is declared first in
48 * // the cpp file below. Signal, action and property declarations follow in any order.
51 * TypeRegistration myActorType(typeid(MyActor), typeid(Actor), CreateMyActor );
53 * SignalConnectorType( myActorType, "highlighted", ConnectSignalForMyActor );
54 * TypeAction( myActorType, "open", DoMyActorAction );
55 * TypeAction( myActorType, "close", DoMyActorAction );
56 * PropertyRegistration( myActorType, "status", PropertyRegistration::START_INDEX, Property::BOOLEAN, SetPropertyFunction, GetPropertyFunction );
63 * TypeRegistry::TypeInfo type = TypeRegistry::Get().GetTypeInfo("MyActor");
64 * MyActor a = MyActor::DownCast(type.CreateInstance());
73 * Actors that inherit from the CustomActor framework must ensure the implementation
74 * class has an identical name to the Actor class. This is to ensure the class can be
75 * found at runtime for signals and actions. Otherwise these will silently fail.
77 * As namespaces are discarded the convention is to use a namespace ie
79 * 'class MyActor {}; namespace Internal { class MyActor {}; }'
81 * Warning: this arrangement will silently fail
83 * 'class MyActor {}; class MyActorImpl {};'
87 * Signal and action names follow properties and are by convention lower case hyphen
88 * separated ie 'next-page'. This maintains consistency with the scripted interface.
91 class DALI_IMPORT_API TypeRegistry : public BaseHandle
95 * @brief Get Type Registry handle.
97 * @return TypeRegistry handle
99 static TypeRegistry Get();
102 * @brief Allows the creation of an empty typeRegistry handle.
112 * @brief This copy constructor is required for (smart) pointer semantics.
114 * @param [in] handle A reference to the copied handle
116 TypeRegistry(const TypeRegistry& handle);
119 * @brief This assignment operator is required for (smart) pointer semantics.
121 * @param [in] rhs A reference to the copied handle
122 * @return A reference to this
124 TypeRegistry& operator=(const TypeRegistry& rhs);
127 * @brief Get TypeInfo for a registered type.
129 * @param [in] uniqueTypeName A unique type name
130 * @return TypeInfo if the type exists otherwise an empty handle
132 TypeInfo GetTypeInfo( const std::string &uniqueTypeName );
135 * @brief Get TypeInfo for a registered type.
137 * @param [in] registerType The registered type info
138 * @return TypeInfo if the type exists otherwise an empty handle
140 TypeInfo GetTypeInfo( const std::type_info& registerType );
143 * @brief Get type name count.
147 size_t GetTypeNameCount() const;
150 * @brief Get type names by index.
152 * @return The type name or an empty string when index is not valid
154 std::string GetTypeName(size_t index) const;
156 public: // Not intended for application developers
159 * @brief This constructor is used by Dali Get() method.
161 * @param [in] typeRegistry A pointer to a Dali resource
163 explicit DALI_INTERNAL TypeRegistry(Internal::TypeRegistry*typeRegistry);
167 * @brief Register a type from type info.
169 class DALI_IMPORT_API TypeRegistration
173 * @brief Constructor registers the type creation function.
175 * @param [in] registerType the type info for the type to be registered
176 * @param [in] baseType the base type info of registerType
177 * @param [in] f registerType instance creation function
179 TypeRegistration( const std::type_info& registerType, const std::type_info& baseType,
180 TypeInfo::CreateFunction f );
183 * @brief Constructor registers the type creation function.
185 * @param [in] registerType the type info for the type to be registered
186 * @param [in] baseType the base type info of registerType
187 * @param [in] f registerType instance creation function
188 * @param [in] callCreateOnInit If true the creation function is called as part of Dali initialisation
190 TypeRegistration( const std::type_info& registerType, const std::type_info& baseType,
191 TypeInfo::CreateFunction f, bool callCreateOnInit );
194 * @brief Constructor registers the type creation function for a named class or type.
196 * This allows types to be created dynamically from script. The name must be
197 * unique for successful registration.
198 * @param [in] name the name of the type to be registered
199 * @param [in] baseType the base type info of registerType
200 * @param [in] f registerType instance creation function
202 TypeRegistration( const std::string& name, const std::type_info& baseType,
203 TypeInfo::CreateFunction f );
206 * @brief The name the type is registered under (derived from type_info).
208 * @return the registered name or empty if unregistered
210 const std::string RegisteredName() const;
213 TypeRegistry mReference; ///< Reference to the type registry
214 std::string mName; ///< Name of the type
218 * @brief Register a signal connector function to a registered type.
220 class DALI_IMPORT_API SignalConnectorType
224 * @brief Constructor registers the type creation function.
226 * @param [in] typeRegistration The TypeRegistration object
227 * @param [in] name The signal name
228 * @param [in] func The signal connector function
230 SignalConnectorType( TypeRegistration& typeRegistration, const std::string& name, TypeInfo::SignalConnectorFunction func );
234 * @brief Register an action function.
236 class DALI_IMPORT_API TypeAction
240 * @brief Constructor registers the type creation function.
242 * @param [in] registered The TypeRegistration object
243 * @param [in] name The action name
244 * @param [in] f The action function
246 TypeAction( TypeRegistration ®istered, const std::string &name, TypeInfo::ActionFunction f);
250 * @brief Register a property for the given type.
252 class DALI_IMPORT_API PropertyRegistration
257 * @brief This constructor registers the property with the registered type.
259 * This constructor is for event-thread only properties where the
260 * value of the property can be retrieved and set via specified
263 * Functions of the following type may be used for setFunc and getFunc respectively:
265 * void SetProperty( BaseObject* object, Property::Index index, const Property::Value& value );
266 * Property::Value GetProperty( BaseObject* object, Property::Index index );
269 * @param [in] registered The TypeRegistration object
270 * @param [in] name The name of the property
271 * @param [in] index The property index. Must be a value between PROPERTY_REGISTRATION_START_INDEX and PROPERTY_REGISTRATION_MAX_INDEX inclusive.
272 * @param [in] type The property value type.
273 * @param [in] setFunc The function to call when setting the property. If NULL, then the property becomes read-only.
274 * @param [in] getFunc The function to call to retrieve the current value of the property. MUST be provided.
276 * @note The "index" value must be between START_INDEX and MAX_INDEX inclusive.
277 * @note If "setFunc" is NULL, then the property becomes a read-only property.
278 * @note "getFunc" MUST be provided
280 * @pre "registered" must be registered with the TypeRegistry.
282 PropertyRegistration( TypeRegistration& registered,
283 const std::string& name, Property::Index index, Property::Type type,
284 TypeInfo::SetPropertyFunction setFunc, TypeInfo::GetPropertyFunction getFunc );
288 * @brief Register an animatable property for the given type.
290 class DALI_IMPORT_API AnimatablePropertyRegistration
295 * @brief This constructor registers the animatable property with the registered type.
297 * This constructor is for scene-graph only properties where the
298 * value of the property can be retrieved and set via specified
301 * @param [in] registered The TypeRegistration object
302 * @param [in] name The name of the property
303 * @param [in] index The property index. Must be a value between ANIMATABLE_PROPERTY_REGISTRATION_START_INDEX and ANIMATABLE_PROPERTY_REGISTRATION_MAX_INDEX inclusive.
304 * @param [in] type The property value type.
306 * @pre "registered" must be registered with the TypeRegistry.
308 AnimatablePropertyRegistration( TypeRegistration& registered, const std::string& name, Property::Index index, Property::Type type );
312 * @brief Register a component of animatable property for the given component index.
314 class DALI_IMPORT_API AnimatablePropertyComponentRegistration
319 * @brief This constructor registers a component of an animatable property where
320 * the base animatable property must be a property that supports property component
321 * (i.e. Vector2, Vector3 or Vector4) and the base animatable property must have
324 * This constructor is for a component of scene-graph only properties where the
325 * value of the property can be retrieved and set via specified functions.
327 * @param [in] registered The TypeRegistration object
328 * @param [in] name The name of the component
329 * @param [in] index The property index. Must be a value between ANIMATABLE_PROPERTY_REGISTRATION_START_INDEX and ANIMATABLE_PROPERTY_REGISTRATION_MAX_INDEX inclusive.
330 * @param [in] baseIndex The index of the base animatable property. Must be a value between ANIMATABLE_PROPERTY_REGISTRATION_START_INDEX and ANIMATABLE_PROPERTY_REGISTRATION_MAX_INDEX inclusive.
331 * @param [in] componentIndex The index of the component (e.g. 0 for the x component of a Vector2 property and 1 for the y component of a Vector2 property).
333 * @pre "registered" must be registered with the TypeRegistry.
335 AnimatablePropertyComponentRegistration( TypeRegistration& registered, const std::string& name, Property::Index index, Property::Index baseIndex, unsigned int componentIndex );