#ifndef OSG_SWITCH
#define OSG_SWITCH 1

#include <osg/Group>

namespace osg {

/** Switch - Group node which allows switching between children.
    Typical uses would be for objects which might need to be rendered
    differently at different times, for instance a switch could be used 
    to represent the different states of a traffic light.
*/
class SG_EXPORT Switch : public Group
{
    public :
        
        enum SwitchType {
            ALL_CHILDREN_ON=-1,
            ALL_CHILDREN_OFF=-2
        };

        Switch();

        virtual Object* clone() const { return new Switch(); }
        virtual bool isSameKindAs(Object* obj) { return dynamic_cast<Switch*>(obj)!=NULL; }
        virtual const char* className() const { return "Switch"; }
        virtual void accept(NodeVisitor& nv) { nv.apply(*this); }
        virtual void traverse(NodeVisitor& nv);
        
        void setVal(int val) { _value = val; }
        int getVal() const { return _value; }

    protected :
    
        virtual ~Switch() {}
        
        virtual bool readLocalData(Input& fr);
        virtual bool writeLocalData(Output& fw);

        int _value;
};

};

#endif