ChangeNotifier.h

/* MetaDataChangeNotifier.h */
 
/* Copyright (C) 2011-2024 Michael Lugmair (Lucio Carreras)
 *
 * This file is part of sayonara player
 *
 * 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 3 of the License, or
 * (at your option) any later version.
 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef METADATACHANGENOTIFIER_H
#define METADATACHANGENOTIFIER_H
 
#include "Utils/Singleton.h"
#include "Utils/Pimpl.h"
 
#include <QObject>
#include <QPair>
 
class MetaData;
class MetaDataList;
class Album;
 
using MetaDataPair = QPair<MetaData, MetaData>;
using AlbumPair = QPair<Album, Album>;
 
namespace Tagging
{
    class ChangeNotifier :
        public QObject
    {
        Q_OBJECT
 
            SINGLETON_QOBJECT(ChangeNotifier)
        PIMPL(ChangeNotifier)
        signals:
            void sigMetadataChanged();
            void sigMetadataDeleted();
            void sigAlbumsChanged();
 
        public:
            void clearChangedMetadata();
            void changeMetadata(const QList<MetaDataPair>& changedTracks);
            void deleteMetadata(const MetaDataList& deletedTracks);
            void updateAlbums(const QList<AlbumPair>& changedAlbums);
 
            const QList<MetaDataPair>& changedMetadata() const;
            const MetaDataList& deletedMetadata() const;
            const QList<AlbumPair>& changedAlbums() const;
 
    };
}
 
#endif // METADATACHANGENOTIFIER_H