/* -*-c++-*- Present3D - Copyright (C) 1999-2006 Robert Osfield
 *
 * This software is open source and may be redistributed and/or modified under
 * the terms of the GNU General Public License (GPL) version 2.0.
 * The full license is in LICENSE.txt file included with this distribution,.
 *
 * This software 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
 * include LICENSE.txt for more details.
*/

#ifndef PROPERTYMANAGER
#define PROPERTYMANAGER 1

#include <osg/ValueObject>
#include <osg/NodeCallback>
#include <osg/ImageSequence>
#include <osgGA/GUIEventHandler>

#include <osgPresentation/Export>

namespace osgPresentation
{

class PropertyManager : protected osg::Object
{
public:
    
    PropertyManager() {}
    PropertyManager(const PropertyManager& pm, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
        osg::Object(pm,copyop) {}

    META_Object(osgPresentation, PropertyManager)
    
    /** Convinience method that casts the named UserObject to osg::TemplateValueObject<T> and gets the value.
        * To use this template method you need to include the osg/ValueObject header.*/
    template<typename T>
    bool getProperty(const std::string& name, T& value) const
    {
        OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
        return getUserValue(name, value);
    }

    /** Convinience method that creates the osg::TemplateValueObject<T> to store the
        * specified value and adds it as a named UserObject.
        * To use this template method you need to include the osg/ValueObject header. */
    template<typename T>
    void setProperty(const std::string& name, const T& value)
    {
        OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
        return setUserValue(name, value);
    }

    int ref() const { return osg::Referenced::ref(); }
    int unref() const { return osg::Referenced::unref(); }
    
protected:

    mutable OpenThreads::Mutex _mutex;

};

struct OSGPRESENTATION_EXPORT ImageSequenceUpdateCallback : public osg::NodeCallback
{
    ImageSequenceUpdateCallback(osg::ImageSequence* is, PropertyManager* pm, const std::string& propertyName):
        _imageSequence(is),
        _propertyManager(pm),
        _propertyName(propertyName) {}

    virtual void operator()(osg::Node* node, osg::NodeVisitor* nv);

    osg::ref_ptr<osg::ImageSequence> _imageSequence;
    osg::ref_ptr<PropertyManager> _propertyManager;
    std::string _propertyName;
};

struct OSGPRESENTATION_EXPORT PropertyEventCallback : public osgGA::GUIEventHandler
{
    PropertyEventCallback(PropertyManager* pm):
        _propertyManager(pm) {}

    virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&);

    osg::ref_ptr<PropertyManager> _propertyManager;
};

}

#endif