Added ability to subclass from osg::Object to provide custom user data functionality. A new UserDataContainer provides the

default implementation of the user data functionality.

src/osg/UserDataContainer.cpp

@@ -0,0 +1,156 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+#include <osg/UserDataContainer>
+
+namespace osg
+{
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+//
+// UserDataContainer
+//
+UserDataContainer::UserDataContainer():
+    Object(true)
+{
+}
+
+UserDataContainer::UserDataContainer(const UserDataContainer& udc, const osg::CopyOp& copyop):
+    Object(udc, copyop)
+{
+    _userData = udc._userData;
+    _descriptionList = udc._descriptionList;
+}
+
+void UserDataContainer::setThreadSafeRefUnref(bool threadSafe)
+{
+    Object::setThreadSafeRefUnref(threadSafe);
+
+    if (_userData.valid()) _userData->setThreadSafeRefUnref(threadSafe);
+
+    for(ObjectList::iterator itr = _objectList.begin();
+        itr != _objectList.end();
+        ++itr)
+    {
+        (*itr)->setThreadSafeRefUnref(threadSafe);
+    }
+}
+
+void UserDataContainer::setUserData(Referenced* obj)
+{
+    _userData = obj;
+}
+
+Referenced* UserDataContainer::getUserData()
+{
+    return _userData.get();
+}
+
+const Referenced* UserDataContainer::getUserData() const
+{
+    return _userData.get();
+}
+
+unsigned int UserDataContainer::addUserObject(Object* obj)
+{
+    // make sure that the object isn't already in the container
+    unsigned int i = getUserObjectIndex(obj);
+    if (i<_objectList.size())
+    {
+        // object already in container so just return.
+        return i;
+    }
+
+    unsigned int pos = _objectList.size();
+
+    // object not already on user data container so add it in.
+    _objectList.push_back(obj);
+
+    return pos;
+}
+
+void UserDataContainer::removeUserObject(unsigned int i)
+{
+    if (i<_objectList.size())
+    {
+        _objectList.erase(_objectList.begin()+i);
+    }
+}
+
+void UserDataContainer::setUserObject(unsigned int i, Object* obj)
+{
+    if (i<_objectList.size())
+    {
+        _objectList[i] = obj;
+    }
+}
+
+Object* UserDataContainer::getUserObject(unsigned int i)
+{
+    if (i<_objectList.size())
+    {
+        return _objectList[i].get();
+    }
+    return 0;
+}
+
+const Object* UserDataContainer::getUserObject(unsigned int i) const
+{
+    if (i<_objectList.size())
+    {
+        return _objectList[i].get();
+    }
+    return 0;
+}
+
+unsigned int UserDataContainer::getNumUserObjects() const
+{
+    return _objectList.size();
+}
+
+unsigned int UserDataContainer::getUserObjectIndex(const osg::Object* obj, unsigned int startPos) const
+{
+    for(unsigned int i = startPos; i < _objectList.size(); ++i)
+    {
+        if (_objectList[i]==obj) return i;
+    }
+    return _objectList.size();
+}
+
+unsigned int UserDataContainer::getUserObjectIndex(const std::string& name, unsigned int startPos) const
+{
+    for(unsigned int i = startPos; i < _objectList.size(); ++i)
+    {
+        Object* obj = _objectList[i].get();
+        if (obj && obj->getName()==name) return i;
+    }
+    return _objectList.size();
+}
+
+void UserDataContainer::setDescriptions(const DescriptionList& descriptions)
+{
+    _descriptionList = descriptions;
+}
+
+Object::DescriptionList& UserDataContainer::getDescriptions()
+{
+    return _descriptionList;
+}
+
+const Object::DescriptionList& UserDataContainer::getDescriptions() const
+{
+    return _descriptionList;
+}
+
+
+
+} // end of namespace osg