XmlExportable.h

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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _XML_EXPORTABLE_H_
#define _XML_EXPORTABLE_H_

#include <QString>
#include <QColor>

class QTextStream;

class XmlExportable
{
public:
    virtual ~XmlExportable() { }

    virtual void toXml(QTextStream &stream,
                       QString indent = "",
                       QString extraAttributes = "") const = 0;

    virtual QString toXmlString(QString indent = "",
                                QString extraAttributes = "") const;

    static QString encodeEntities(QString);

    static QString encodeColour(QColor); 

    static int getObjectExportId(const void *); // thread-safe
};

#endif

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