1 #ifndef DALI_INTERNAL_SCENE_GRAPH_CONNECTION_CHANGE_PROPAGATOR_H
2 #define DALI_INTERNAL_SCENE_GRAPH_CONNECTION_CHANGE_PROPAGATOR_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.
20 #include <dali/public-api/common/dali-vector.h>
31 * This class maintains a list of observers that are informed when
32 * it's owner changes it's connections.
34 class ConnectionChangePropagator
41 * Inform the observer of the object that it's connections have changed
42 * @param[in] object The connection owner
44 virtual void ConnectionsChanged(PropertyOwner& object) = 0;
47 * Inform the observer of the object that a connected object has
48 * changed it's uniform map in some way.
50 virtual void ConnectedUniformMapChanged() = 0;
53 * Inform the observer of the object that the object is about to be destroyed
55 virtual void ObservedObjectDestroyed(PropertyOwner& object){}
60 * Virtual destructor, no deletion through this interface
62 virtual ~Observer() = default;
68 ConnectionChangePropagator();
73 ~ConnectionChangePropagator();
78 void Add(Observer& observer);
83 void Remove(Observer& observer);
86 * Inform the observers that the connections to the object have changed
87 * @param[in] object The connection owner
89 void ConnectionsChanged(PropertyOwner& object);
92 * Inform the observers that the uniform map of this or a connected object
95 void ConnectedUniformMapChanged();
98 * Inform the observers that the object is about to be destroyed
99 * @param[in] object The connection owner
101 void Destroy( PropertyOwner& object );
104 using Observers = Dali::Vector<Observer*>;
105 using ObserversIterator = Observers::Iterator;
107 Observers mObservers;
115 #endif // DALI_INTERNAL_SCENE_GRAPH_CONNECTION_CHANGE_PROPAGATOR_H