StoragePolicy.h

// SPDX-License-Identifier: LGPL-2.1-or-later
//
// SPDX-FileCopyrightText: 2007 Tobias Koenig <tokoe@kde.org>
// SPDX-FileCopyrightText: 2009 Bastian Holst <bastianholst@gmx.de>
//
 
#ifndef MARBLE_STORAGEPOLICY_H
#define MARBLE_STORAGEPOLICY_H
 
 
#include <QObject>
 
class QByteArray;
class QString;
 
namespace Marble
{
 
class StoragePolicy : public QObject
{
    Q_OBJECT
    
    public:
        explicit StoragePolicy( QObject *parent = nullptr );
    
        ~StoragePolicy() override {}
 
        virtual bool fileExists( const QString &fileName ) const = 0;
 
        /**
         * Return true if file was written successfully.
         */
        virtual bool updateFile( const QString &fileName, const QByteArray &data ) = 0;
 
    virtual void clearCache() = 0;
 
        virtual QString lastErrorMessage() const = 0;
    
    Q_SIGNALS:
    void cleared();
    void sizeChanged( qint64 );
    
    private:
    Q_DISABLE_COPY( StoragePolicy )
};
 
}
 
#endif