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#ifndef TRACKERCHANGELISTENER_H_

#define TRACKERCHANGELISTENER_H_

#include <QObject>

#include <QHash>

#include <qcontact.h>

#include <QSharedPointer>

#include <QtTracker/QLive>

#include <QtTracker/Tracker>

#include <qcontactmanagerengine.h>

QTM_USE_NAMESPACE

QContactLocalId url2UniqueId(const QString &contactUrl);

/*!

 * \class TrackerChangeListener

 * \brief Translates signals from tracker and to contact signals

 * Listen for tracker signals, computes which contacts are and what si changed and emits

 * signals about contact change. Initially designed to compute change signals for

 * QContactTrackerEngine

 */

class TrackerChangeListener : public QObject

{

    Q_OBJECT

public:

    explicit TrackerChangeListener(QContactManagerEngine *engine, QObject *parent);

    virtual ~TrackerChangeListener();

signals:

    // signals are with the same semantics as in QContactManagerEngine

    void contactsAdded(const QList<QContactLocalId>& contactIds);

    void contactsChanged(const QList<QContactLocalId>& contactIds);

    void contactsRemoved(const QList<QContactLocalId>& contactIds);

private slots:

    void contactsAdded(const QStringList &subjects);

    void contactsRemoved(const QStringList &subjects);

    void contactsChanged(const QStringList &subjects);

    void imAccountsChanged(const QStringList &subjects);

    void imAddressesChanged(const QStringList &subjects);

private:

    SopranoLive::BackEnds::Tracker::ClassUpdateSignaler *signaler_contact;

    SopranoLive::BackEnds::Tracker::ClassUpdateSignaler *signaler_imaccount;

    SopranoLive::BackEnds::Tracker::ClassUpdateSignaler *signaler_imaddress;

    QContactManagerEngine *engine;

};

#endif /* TRACKERCHANGELISTENER_H_ */