/* -*-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/UserDataContainer>
#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;

};

class PropertyAnimation : public osg::NodeCallback
{
public:
    PropertyAnimation():
            _firstTime(DBL_MAX),
            _latestTime(0.0),
            _pause(false),
            _pauseTime(0.0) {}

    void setPropertyManager(PropertyManager* pm) { _pm = pm; }
    PropertyManager* getPropertyManager() const { return _pm.get(); }

    typedef std::map<double, osg::ref_ptr<osg::UserDataContainer> > KeyFrameMap;

    KeyFrameMap& getKeyFrameMap() { return _keyFrameMap; }
    const KeyFrameMap& getKeyFrameMap() const { return _keyFrameMap; }

    void addKeyFrame(double time, osg::UserDataContainer* udc)
    {
        _keyFrameMap[time] = udc;
    }

    virtual void reset();

    void setPause(bool pause);
    bool getPause() const { return _pause; }

    double getAnimationTime() const;

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

    virtual void update();

protected:

    osg::ref_ptr<PropertyManager> _pm;

    KeyFrameMap _keyFrameMap;

    double      _firstTime;
    double      _latestTime;
    bool        _pause;
    double      _pauseTime;
    
};



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