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****************************************************************************/

#ifndef QVALUESPACESUBSCRIBER_H
#define QVALUESPACESUBSCRIBER_H

#include "qmobilityglobal.h"
#include "qvaluespace.h"

#include <QObject>
#include <QVariant>
#include <QStringList>
#include <QExplicitlySharedDataPointer>

QT_BEGIN_HEADER

QTM_BEGIN_NAMESPACE

class QValueSpaceSubscriberPrivate;

class Q_PUBLISHSUBSCRIBE_EXPORT QValueSpaceSubscriber : public QObject
{
    Q_OBJECT

    Q_PROPERTY(QString path READ path WRITE setPath)
    Q_PROPERTY(QVariant value READ valuex NOTIFY contentsChanged)

public:
    explicit QValueSpaceSubscriber(QObject *parent = 0);
    explicit QValueSpaceSubscriber(const QString &path, QObject *parent = 0);

    QValueSpaceSubscriber(QValueSpace::LayerOptions filter, const QString &path,
                          QObject *parent = 0);
    QValueSpaceSubscriber(const QUuid &uuid, const QString &path, QObject *parent = 0);

    virtual ~QValueSpaceSubscriber();

    void setPath(const QString &path);
    void setPath(QValueSpaceSubscriber *subscriber);
    QString path() const;

    void cd(const QString &path);
    void cdUp();

    bool isConnected() const;

    QStringList subPaths() const;

    QVariant value(const QString &subPath = QString(), const QVariant &def = QVariant()) const;


signals:
    void contentsChanged();

protected:
    virtual void connectNotify(const char *signal);
    virtual void disconnectNotify(const char *signal);

private:
    QVariant valuex(const QVariant &def = QVariant()) const;

private:
    Q_DISABLE_COPY(QValueSpaceSubscriber)

    QExplicitlySharedDataPointer<QValueSpaceSubscriberPrivate> d;
};

QTM_END_NAMESPACE

QT_END_HEADER

#endif // QVALUESPACESUBSCRIBER_H
