/*
 * (C) Copyright 1996-2016 ECMWF.
 * 
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
 * In applying this licence, ECMWF does not waive the privileges and immunities 
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

/*!
    \brief Definition of the Template class ViewNode.
    
    Magics Team - ECMWF 2007
    
    Started: Tue 6-Mar-2007
    
    Changes:
    
*/

#ifndef PreviewNode_H
#define PreviewNode_H

#include "magics.h"
#include "SceneVisitor.h"
#include "Coastlines.h"



namespace magics {


class NoPreviewVisitor: public SceneVisitor, public PreviewLayout
{
public:
	NoPreviewVisitor()  {}
	virtual ~NoPreviewVisitor() {}
	virtual void set(const XmlNode&) {}
	virtual void set(const map<string, string>&) {}
	virtual bool accept(const string&) { return false;}
	virtual void toxml(ostream&, int = 0) const {}
	virtual NoPreviewVisitor* clone() const { return new NoPreviewVisitor();}

	void visit(BasicSceneObject&) {}

protected:
	virtual void print(ostream& s) const;

	friend ostream& operator<<(ostream& s,const NoPreviewVisitor& p)
	{
		p.print(s); 
		return s;
	}
};


class PreviewVisitor: public NoPreviewVisitor
{
public:
	PreviewVisitor() ;
	~PreviewVisitor();
	NoPreviewVisitor* clone() const { return new PreviewVisitor(); }
	void visit(BasicGraphicsObjectContainer&);
	void redisplay(const BaseDriver& driver) const;
	void visit(BasicSceneObject& object);
	CoastPlotting& coastlines() { return coastlines_; }
	
protected: 
	void print(ostream& s) const;
	CoastPlotting coastlines_;
};


template <>
class MagTranslator<string, NoPreviewVisitor> { 
public:
	NoPreviewVisitor* operator()(const string& val )
	{
		return SimpleObjectMaker<NoPreviewVisitor>::create(val);
	}     

	NoPreviewVisitor* magics(const string& param)
	{
		NoPreviewVisitor* object;
		ParameterManager::update(param, object);
		return object;
	}

};

} // namespace magics
#endif
