GeoWriter.h

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//
// This file is part of the Marble Virtual Globe.
//
// This program is free software licensed under the GNU LGPL. You can
// find a copy of this license in LICENSE.txt in the top directory of
// the source code.
//
// Copyright 2009      Andrew Manson <[email protected]>
//

#ifndef MARBLE_GEOWRITER_H
#define MARBLE_GEOWRITER_H

#include "marble_export.h"

#include <QXmlStreamWriter>
#include <QVariant>

namespace Marble
{

class GeoNode;

class MARBLE_EXPORT GeoWriter : public QXmlStreamWriter
{
public:
    GeoWriter();

    bool write( QIODevice* device, const GeoNode *feature);

    void setDocumentType( const QString& documentType );

    void writeElement( const QString &namespaceUri, const QString &key, const QString &value );

    void writeElement( const QString &key, const QString &value );

    void writeOptionalElement(const QString &key, const QString &value , const QString &defaultValue = QString() );

    void writeOptionalAttribute( const QString &key, const QString &value, const QString &defaultValue = QString() );

    template<class T>
    void writeOptionalElement( const QString &key, const T &value , const T &defaultValue = T() )
    {
        if ( value != defaultValue ) {
            writeElement( key, QVariant::fromValue( value ).toString() );
        }
    }

private:
    friend class GeoTagWriter;
    friend class GeoDataDocumentWriter;
    bool writeElement( const GeoNode* object );

private:
    QString m_documentType;
};

}

#endif