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// $Id: G4HepRep.cc,v 1.23 2009/11/23 05:42:28 perl Exp $
// GEANT4 tag $Name:  $
//

/**
 * We allow only one HepRep Scene handler and one attached Viewer.
 * The sceneHandler associates with the output file
 *
 * @author Mark Donszelmann
 */

//G4
#include "G4Types.hh"
#include "G4HepRepViewer.hh"
#include "G4HepRepSceneHandler.hh"
#include "G4HepRepMessenger.hh"

//This
#include "G4HepRep.hh"

using namespace HEPREP;
using namespace std;

G4HepRep::G4HepRep ()
        : G4VGraphicsSystem ("G4HepRep",
                             "HepRepXML",
        	             "HepRep Generic Driver for XML, RMI and CORBA",
                             G4VGraphicsSystem::threeD),
          sceneHandler(NULL),
          viewer(NULL) {
		G4HepRepMessenger::GetInstance();
}

G4HepRep::~G4HepRep () {
}

G4VSceneHandler* G4HepRep::CreateSceneHandler (const G4String& name) {
    if (sceneHandler != NULL) {
        cout << "G4HepRep::CreateSceneHandler: Cannot create more than one G4HepRepSceneHandler" << endl;
        return NULL;
    }
    sceneHandler = new G4HepRepSceneHandler (*this, name);
    return sceneHandler;
}

G4VViewer* G4HepRep::CreateViewer (G4VSceneHandler& scene, const G4String& name) {
    if (viewer != NULL) {
        cout << "G4HepRep::CreateViewer: Cannot create more than one G4HepRepViewer" << endl;
        return NULL;
    }
    viewer  = new G4HepRepViewer ((G4HepRepSceneHandler&)scene, name);
    return viewer;
}

void G4HepRep::removeSceneHandler() {
    // actual deletion is done in VisManager
    sceneHandler = NULL;
}

void G4HepRep::removeViewer() {
    // actual deletion is done in VisManager
    viewer = NULL;
}

