qgslayoutserializableobject.h

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/***************************************************************************
                          qgslayoutserializableobject.h
                          -----------------------------
    begin                : July 2017
    copyright            : (C) 2017 by Nyall Dawson
    email                : nyall dot dawson at gmail dot com
***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSLAYOUTSERIALIZABLEOBJECT_H
#define QGSLAYOUTSERIALIZABLEOBJECT_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgslayoutundocommand.h"
 
class QDomElement;
class QDomDocument;
class QgsReadWriteContext;
class QgsAbstractLayoutUndoCommand;

class CORE_EXPORT QgsLayoutSerializableObject : public QgsLayoutUndoObjectInterface
{
  public:
    virtual QString stringType() const = 0;

    virtual QgsLayout *layout() = 0;

    virtual bool writeXml( QDomElement &parentElement, QDomDocument &document, const QgsReadWriteContext &context ) const = 0;

    virtual bool readXml( const QDomElement &element, const QDomDocument &document, const QgsReadWriteContext &context ) = 0;
 
    QgsAbstractLayoutUndoCommand *createCommand( const QString &text, int id, QUndoCommand *parent = nullptr ) override SIP_FACTORY;
 
  private:
    friend class QgsLayoutSerializableObjectUndoCommand;
};
 
#endif // QGSLAYOUTSERIALIZABLEOBJECT_H