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#ifndef QMEDIAPLAYLISTPROVIDER_H
#define QMEDIAPLAYLISTPROVIDER_H

#include <QObject>

#include "qmediacontent.h"
#include "qmediaplaylist.h"

QT_BEGIN_NAMESPACE
class QString;
QT_END_NAMESPACE

QT_BEGIN_NAMESPACE

class QMediaPlaylistProviderPrivate;
class Q_MEDIA_EXPORT QMediaPlaylistProvider : public QObject
{
Q_OBJECT
public:
    QMediaPlaylistProvider(QObject *parent=0);
    virtual ~QMediaPlaylistProvider();

    virtual bool load(const QUrl &location, const char *format = 0);
    virtual bool load(QIODevice * device, const char *format = 0);
    virtual bool save(const QUrl &location, const char *format = 0);
    virtual bool save(QIODevice * device, const char *format);

    virtual int mediaCount() const = 0;
    virtual QMediaContent media(int index) const = 0;

    virtual bool isReadOnly() const;

    virtual bool addMedia(const QMediaContent &content);
    virtual bool addMedia(const QList<QMediaContent> &contentList);
    virtual bool insertMedia(int index, const QMediaContent &content);
    virtual bool insertMedia(int index, const QList<QMediaContent> &content);
    virtual bool removeMedia(int pos);
    virtual bool removeMedia(int start, int end);
    virtual bool clear();

public Q_SLOTS:
    virtual void shuffle();

Q_SIGNALS:
    void mediaAboutToBeInserted(int start, int end);
    void mediaInserted(int start, int end);

    void mediaAboutToBeRemoved(int start, int end);
    void mediaRemoved(int start, int end);

    void mediaChanged(int start, int end);

    void loaded();
    void loadFailed(QMediaPlaylist::Error, const QString& errorMessage);

protected:
    QMediaPlaylistProviderPrivate *d_ptr;
    QMediaPlaylistProvider(QMediaPlaylistProviderPrivate &dd, QObject *parent);

private:
    Q_DECLARE_PRIVATE(QMediaPlaylistProvider)
};

QT_END_NAMESPACE

#endif // QMEDIAPLAYLISTPROVIDER_H