1 #ifndef __DALI_INTERNAL_OBJECT_H__
2 #define __DALI_INTERNAL_OBJECT_H__
5 * Copyright (c) 2014 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/animation/active-constraint.h>
23 #include <dali/public-api/animation/constraint.h>
24 #include <dali/public-api/common/dali-vector.h>
25 #include <dali/public-api/common/vector-wrapper.h>
26 #include <dali/public-api/object/base-object.h>
27 #include <dali/public-api/object/constrainable.h>
28 #include <dali/public-api/object/handle.h>
29 #include <dali/public-api/object/property.h>
30 #include <dali/public-api/object/property-index.h>
31 #include <dali/public-api/object/property-input.h>
32 #include <dali/public-api/object/property-notification.h>
33 #include <dali/internal/common/owner-container.h>
34 #include <dali/internal/event/common/object-impl.h>
35 #include <dali/internal/event/common/custom-property.h>
36 #include <dali/internal/event/common/property-input-impl.h>
37 #include <dali/internal/update/common/property-base.h>
43 class PropertyNotification;
49 class PropertyCondition;
50 class PropertyInputImpl;
55 * @brief Structure for setting up default properties and their details.
57 struct PropertyDetails
59 const char* name; ///< The name of the property.
60 Property::Type type; ///< The property type.
61 bool writable:1; ///< Whether the property is writable
62 bool animatable:1; ///< Whether the property is animatable.
63 bool constraintInput:1; ///< Whether the property can be used as an input to a constraint.
72 typedef std::vector< Dali::ActiveConstraint > ActiveConstraintContainer;
73 typedef ActiveConstraintContainer::iterator ActiveConstraintIter;
74 typedef ActiveConstraintContainer::const_iterator ActiveConstraintConstIter;
77 * A base class for objects which optionally provide properties.
78 * The concrete derived class is responsible for implementing the property system methods.
79 * Classes may derive from Dali::BaseObject, until any properties are required.
81 * An object for a property-owning object in the scene-graph.
82 * This provides an interface for observing the addition/removal of scene-objects.
84 * The concrete derived class is responsible for:
85 * 1) Adding & removing an object from the scene-graph. The OnSceneObjectAdd() and OnSceneObjectRemove()
86 * methods should be called by the derived class, to trigger observer callbacks.
87 * 3) Implementing the GetSceneObject() methods, used to access the scene-object.
88 * 4) Providing access to properties stored by the scene-graph object. These should match the properties
89 * reported by the base Dali::Internal::Object methods.
92 class Object : public Dali::BaseObject
96 typedef Dali::Handle::Capability Capability;
103 * Called immediately after the object has created & passed ownership of a scene-graph object.
104 * @param[in] object The object object.
106 virtual void SceneObjectAdded(Object& object) = 0;
109 * Called shortly before the object sends a message to remove its scene object.
110 * @param[in] object The object object.
112 virtual void SceneObjectRemoved(Object& object) = 0;
115 * Called shortly before the object itself is destroyed; no further callbacks will be received.
116 * @param[in] object The object object.
118 virtual void ObjectDestroyed(Object& object) = 0;
125 virtual ~Observer(){}
134 * Add an observer to the object.
135 * @param[in] observer The observer to add.
137 virtual void AddObserver( Observer& observer );
140 * Remove an observer from the object
141 * @pre The observer has already been added.
142 * @param[in] observer The observer to remove.
144 virtual void RemoveObserver( Observer& observer );
147 * @copydoc Dali::Handle::Supports()
149 virtual bool Supports( Capability capability ) const;
152 * @copydoc Dali::Handle::GetPropertyCount()
154 virtual unsigned int GetPropertyCount() const;
157 * @copydoc Dali::Handle::GetPropertyName()
159 virtual std::string GetPropertyName( Property::Index index ) const;
162 * @copydoc Dali::Handle::GetPropertyIndex()
164 virtual Property::Index GetPropertyIndex( const std::string& name ) const;
167 * @copydoc Dali::Handle::IsPropertyWritable()
169 virtual bool IsPropertyWritable( Property::Index index ) const;
172 * @copydoc Dali::Handle::IsPropertyAnimatable()
174 virtual bool IsPropertyAnimatable( Property::Index index ) const;
177 * @copydoc Dali::Handle::IsPropertyAConstraintInput()
179 virtual bool IsPropertyAConstraintInput( Property::Index index ) const;
182 * @copydoc Dali::Handle::GetPropertyType()
184 virtual Property::Type GetPropertyType( Property::Index index ) const;
187 * @copydoc Dali::Handle::SetProperty()
189 virtual void SetProperty( Property::Index index, const Property::Value& propertyValue );
192 * @copydoc Dali::Handle::GetProperty()
194 virtual Property::Value GetProperty( Property::Index index ) const;
197 * @copydoc Dali::Handle::GetPropertyIndices()
199 virtual void GetPropertyIndices( Property::IndexContainer& indices ) const;
202 * @copydoc Dali::Handle::RegisterProperty()
204 virtual Property::Index RegisterProperty( const std::string& name, const Property::Value& propertyValue );
207 * @copydoc Dali::Handle::RegisterProperty(std::string name, Property::Value propertyValue, Property::AccessMode accessMode)
209 virtual Property::Index RegisterProperty( const std::string& name, const Property::Value& propertyValue, Property::AccessMode accessMode );
212 * @copydoc Dali::Handle::AddPropertyNotification()
214 virtual Dali::PropertyNotification AddPropertyNotification( Property::Index index,
216 const Dali::PropertyCondition& condition );
219 * @copydoc Dali::Handle::RemovePropertyNotification()
221 virtual void RemovePropertyNotification( Dali::PropertyNotification propertyNotification );
224 * @copydoc Dali::Handle::RemovePropertyNotifications()
226 virtual void RemovePropertyNotifications();
231 * Apply a constraint to a Object.
232 * @param[in] constraint The constraint to apply.
234 Dali::ActiveConstraint ApplyConstraint( Constraint& constraint );
237 * Apply a constraint to a Object.
238 * @param[in] constraint The constraint to apply.
239 * @param[in] weightObject An object with a "weight" float property.
241 Dali::ActiveConstraint ApplyConstraint( Constraint& constraint, Dali::Constrainable weightObject );
244 * Remove one constraint from a Object.
245 * @param[in] activeConstraint The active constraint to remove.
247 void RemoveConstraint( Dali::ActiveConstraint activeConstraint );
250 * Remove all constraints from a Object.
252 void RemoveConstraints();
255 * Remove all constraints from a Object with a matching tag
257 void RemoveConstraints( unsigned int tag );
260 * Called by TypeInfo to set the type-info that this object-impl is created by.
261 * @param[in] typeInfo The TypeInfo that creates this object-impl.
263 void SetTypeInfo( const TypeInfo* typeInfo );
266 * @return the index from which custom properties start
268 unsigned int CustomPropertyStartIndex()
270 return PROPERTY_CUSTOM_START_INDEX;
273 // To be overridden by deriving classes
276 * Retrieve the scene-graph object added by this object.
277 * @return A pointer to the object, or NULL if no object has been added to the scene-graph.
279 virtual const SceneGraph::PropertyOwner* GetSceneObject() const = 0;
282 * Retrieve an animatable property owned by the scene-graph object.
283 * @pre -1 < index < GetPropertyCount().
284 * @param[in] index The index of the property.
285 * @return A dereferenceable pointer to a property, or NULL if a scene-object does not exist with this property.
287 virtual const SceneGraph::PropertyBase* GetSceneObjectAnimatableProperty( Property::Index index ) const = 0;
290 * Retrieve an constraint input-property owned by the scene-graph object.
291 * @pre -1 < index < GetPropertyCount().
292 * @param[in] index The index of the property.
293 * @return A dereferenceable pointer to an input property, or NULL if a scene-object does not exist with this property.
295 virtual const PropertyInputImpl* GetSceneObjectInputProperty( Property::Index index ) const = 0;
298 * Query whether the property is a component of a scene-graph property.
299 * @pre -1 < index < GetPropertyCount().
300 * @param[in] index The index of the property.
301 * @return The index or Property::INVALID_COMPONENT_INDEX.
303 virtual int GetPropertyComponentIndex( Property::Index index ) const;
308 * A reference counted object may only be deleted by calling Unreference()
313 * Called immediately by derived classes, after the scene-object has been created & passed to the scene-graph.
315 void OnSceneObjectAdd();
318 * Called by derived classes, shortly before send a message to remove the scene-object.
320 void OnSceneObjectRemove();
323 * For use in derived classes.
324 * This is called after a non animatable custom property is set.
325 * @param [in] index The index of the property.
326 * @param [in] propertyValue The value of the property.
328 virtual void OnPropertySet( Property::Index index, Property::Value propertyValue ) {}
331 * Retrieves the TypeInfo for this object. Only retrieves it from the type-registry once and then stores a pointer
332 * to it locally there-after. The type info will not change during the life-time of the application.
333 * @return The type-info for this object (Can be NULL)
335 const TypeInfo* GetTypeInfo() const;
338 * Helper to find custom property
340 * @return pointer to the property
342 CustomProperty* FindCustomProperty( Property::Index index ) const;
344 private: // Default property extensions for derived classes
347 * Query how many default properties the derived class supports.
348 * @return The number of default properties.
350 virtual unsigned int GetDefaultPropertyCount() const = 0;
353 * Retrieve all the indices that are associated with the default properties supported by the derived class.
354 * @return A container of default property indices.
355 * @note The deriving class must not modify the existing elements in the container.
357 virtual void GetDefaultPropertyIndices( Property::IndexContainer& indices ) const = 0;
360 * Query how many default properties the derived class supports.
361 * @return The number of default properties.
363 virtual const char* GetDefaultPropertyName( Property::Index index ) const = 0;
366 * Query the index of a default property.
367 * @param [in] name The name of the property.
368 * @return The index of the property, or Property::INVALID_INDEX if no default property exists with the given name.
370 virtual Property::Index GetDefaultPropertyIndex( const std::string& name ) const = 0;
373 * Query whether a default property is writable.
374 * @param [in] index The index of the property.
375 * @return True if the property is animatable.
377 virtual bool IsDefaultPropertyWritable( Property::Index index ) const = 0;
380 * Query whether a default property is animatable.
381 * This determines whether the property can be the target of an animation or constraint.
382 * @param [in] index The index of the property.
383 * @return True if the property is animatable.
385 virtual bool IsDefaultPropertyAnimatable( Property::Index index ) const = 0;
388 * @brief Query whether a default property can be used as an input to a constraint.
390 * @param [in] index The index of the property.
391 * @return True if the property can be used as an input to a constraint.
393 virtual bool IsDefaultPropertyAConstraintInput( Property::Index index ) const = 0;
396 * Query the type of a default property.
397 * @param [in] index The index of the property.
398 * @return The type of the property.
400 virtual Property::Type GetDefaultPropertyType( Property::Index index ) const = 0;
403 * Set the value of a default property.
404 * @pre The property types match i.e. propertyValue.GetType() is equal to GetPropertyType(index).
405 * @param [in] index The index of the property.
406 * @param [in] propertyValue The new value of the property.
408 virtual void SetDefaultProperty( Property::Index index, const Property::Value& propertyValue ) = 0;
411 * Retrieve a default property value.
412 * @param [in] index The index of the property.
413 * @return The property value.
415 virtual Property::Value GetDefaultProperty( Property::Index index ) const = 0;
418 * @todo this is virtual so that for now actor can override it,
419 * it needs to be removed and only have GetSceneObject but that requires changing actor and constraint logic
420 * Retrieve the scene-graph object added by this object.
421 * @return A pointer to the object, or NULL if no object has been added to the scene-graph.
423 virtual const SceneGraph::PropertyOwner* GetPropertyOwner() const
425 return GetSceneObject();
429 * Notify derived class of installation of a new scene-object property.
430 * This method is called after the message is to sent to install the property
431 * @param [in] newProperty A newly allocated scene-object property. Ownership is obviously not passed.
432 * @param [in] name The name allocated to this custom property.
433 * @param [in] index The index allocated to this custom property.
435 virtual void NotifyScenePropertyInstalled( const SceneGraph::PropertyBase& newProperty, const std::string& name, unsigned int index )
441 Object(const Object& rhs);
444 Object& operator=(const Object& rhs);
447 * Enable property notifications in scene graph
449 void EnablePropertyNotifications();
452 * Enable property notifications in scene graph
454 void DisablePropertyNotifications();
457 * Helper for ApplyConstraint overloads.
458 * @param[in] constraint The constraint to apply.
459 * @param[in] weightObject An object with a "weight" float property, or an empty handle.
460 * @return The new active-constraint which is owned by Object.
462 ActiveConstraintBase* DoApplyConstraint( Constraint& constraint, Dali::Constrainable weightObject );
465 * Helper to remove active constraints
467 void RemoveConstraint( ActiveConstraint& constraint, bool isInScenegraph );
470 * Set the value of scene graph property.
471 * @param [in] index The index of the property.
472 * @param [in] entry An entry from the CustomPropertyLookup.
473 * @param [in] value The new value of the property.
475 virtual void SetSceneGraphProperty( Property::Index index, const CustomProperty& entry, const Property::Value& value );
479 typedef OwnerContainer<CustomProperty*> CustomPropertyLookup;
480 CustomPropertyLookup mCustomProperties; ///< Used for accessing custom Node properties
481 mutable TypeInfo const * mTypeInfo; ///< The type-info for this object, mutable so it can be lazy initialized from const method if it is required
483 Dali::Vector<Observer*> mObservers;
485 ActiveConstraintContainer* mConstraints; ///< Container of owned active-constraints.
487 typedef std::vector< Dali::PropertyNotification > PropertyNotificationContainer;
488 typedef PropertyNotificationContainer::iterator PropertyNotificationContainerIter;
489 typedef PropertyNotificationContainer::const_iterator PropertyNotificationContainerConstIter;
490 PropertyNotificationContainer* mPropertyNotifications; ///< Container of owned property notifications.
493 } // namespace Internal
495 // Helpers for public-api forwarding methods
497 inline Internal::Object& GetImplementation(Dali::Handle& object)
499 DALI_ASSERT_ALWAYS( object && "Object handle is empty" );
501 BaseObject& handle = object.GetBaseObject();
503 return static_cast<Internal::Object&>(handle);
506 inline const Internal::Object& GetImplementation(const Dali::Handle& object)
508 DALI_ASSERT_ALWAYS( object && "Object handle is empty" );
510 const BaseObject& handle = object.GetBaseObject();
512 return static_cast<const Internal::Object&>(handle);
517 #endif // __DALI_INTERNAL_OBJECT_H__