QAspectEngine QNode lookup table

QNode now contains an instance of the QAspectEngine. When the scene is first
created, all nodes are traversed and inserted in a table referenced by their
uuid.
When new nodes are added at runtine, QNode::addChild takes care of inserting
the new node into the QAspectEngine's table. The same applies for
QNode::removeChild.
QNode now also has a isCloned() method.
QFrontendSceneObserver has a pointer to the QAspectEngine.
QFrontendSceneObserver will need to check in the QAspectEngine's table if a
node is available to receive the notification when sceneUpdated is called.

Change-Id: Ic243261ecff5e15f841ca180cb97ba65df2b3bfb
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/core/aspects/qaspectengine_p.h b/src/core/aspects/qaspectengine_p.h
index 67c7d8b58..b942ae121 100644
--- a/src/core/aspects/qaspectengine_p.h
+++ b/src/core/aspects/qaspectengine_p.h
@@ -45,11 +45,14 @@
 #include <private/qobject_p.h>
 #include <QMutex>
 #include <QWaitCondition>
+#include <QUuid>
+#include <QHash>
 
 QT_BEGIN_NAMESPACE
 
 namespace Qt3D {
 
+class QNode;
 class QAspectEngine;
 class QAspectThread;
 class QFrontendSceneObserver;
@@ -63,6 +66,7 @@ public:
 
     QAspectThread *m_aspectThread;
     QFrontendSceneObserver *m_frontendSceneObserver;
+    QHash<QUuid, QNode *> m_nodeLookups;
 };
 
 } // Qt3D