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

#ifndef QNETWORKSESSION_IMPL_H
#define QNETWORKSESSION_IMPL_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtNetwork/private/qnetworksession_p.h>

#include <QDateTime>

#include <e32base.h>
#include <commdbconnpref.h>
#include <es_sock.h>
#include <rconnmon.h>
#ifdef SNAP_FUNCTIONALITY_AVAILABLE
    #include <comms-infras/cs_mobility_apiext.h>
#endif

QT_BEGIN_NAMESPACE

class ConnectionProgressNotifier;
class ConnectionStarter;
class SymbianEngine;

typedef void (*TOpenCUnSetdefaultifFunction)();

class QNetworkSessionPrivateImpl : public QNetworkSessionPrivate
#ifdef SNAP_FUNCTIONALITY_AVAILABLE
                                 , public MMobilityProtocolResp
#endif
{
    Q_OBJECT
public:
    QNetworkSessionPrivateImpl(SymbianEngine *engine);
    ~QNetworkSessionPrivateImpl();
    
    //called by QNetworkSession constructor and ensures
    //that the state is immediately updated (w/o actually opening
    //a session). Also this function should take care of 
    //notification hooks to discover future state changes.
    void syncStateWithInterface();

#ifndef QT_NO_NETWORKINTERFACE
    QNetworkInterface currentInterface() const;
#endif
    QVariant sessionProperty(const QString& key) const;
    void setSessionProperty(const QString& key, const QVariant& value);
    
    void setALREnabled(bool enabled);

    void open();
    inline void close() { close(true); }
    void close(bool allowSignals);
    void stop();
    void migrate();
    void accept();
    void ignore();
    void reject();

    QString errorString() const; //must return translated string
    QNetworkSession::SessionError error() const;

    quint64 bytesWritten() const;
    quint64 bytesReceived() const;
    quint64 activeTime() const;

    RConnection* nativeSession();
#ifdef SNAP_FUNCTIONALITY_AVAILABLE    
public: // From MMobilityProtocolResp
    void PreferredCarrierAvailable(TAccessPointInfo aOldAPInfo,
                                   TAccessPointInfo aNewAPInfo,
                                   TBool aIsUpgrade,
                                   TBool aIsSeamless);

    void NewCarrierActive(TAccessPointInfo aNewAPInfo, TBool aIsSeamless);

    void Error(TInt aError);
#endif    

protected: // From CActive
    void ConnectionStartComplete(TInt statusCode);
    void DoCancel();
    
private Q_SLOTS:
    void configurationStateChanged(quint32 accessPointId, quint32 connMonId,
                                   QNetworkSession::State newState);
    void configurationRemoved(QNetworkConfigurationPrivatePointer config);
    void configurationAdded(QNetworkConfigurationPrivatePointer config);

private:
    TUint iapClientCount(TUint aIAPId) const;
    quint64 transferredData(TUint dataType) const;
    bool newState(QNetworkSession::State newState, TUint accessPointId = 0);
    void handleSymbianConnectionStatusChange(TInt aConnectionStatus, TInt aError, TUint accessPointId = 0);
    QNetworkConfiguration bestConfigFromSNAP(const QNetworkConfiguration& snapConfig) const;
    QNetworkConfiguration activeConfiguration(TUint32 iapId = 0) const;
#ifndef QT_NO_NETWORKINTERFACE
    QNetworkInterface interface(TUint iapId) const;
#endif

#if defined(SNAP_FUNCTIONALITY_AVAILABLE)
    bool easyWlanTrueIapId(TUint32 &trueIapId) const;
#endif

    void closeHandles();

private: // data
    SymbianEngine *engine;

#ifndef QT_NO_NETWORKINTERFACE
    mutable QNetworkInterface activeInterface;
#endif

    QDateTime startTime;

    mutable RSocketServ &iSocketServ; //not owned, shared from QtCore
    mutable RConnection iConnection;
    mutable RConnectionMonitor iConnectionMonitor;
    ConnectionProgressNotifier* ipConnectionNotifier;
    ConnectionStarter* ipConnectionStarter;

    bool iHandleStateNotificationsFromManager;
    bool iFirstSync;
    bool iStoppedByUser;
    bool iClosedByUser;

#ifdef SNAP_FUNCTIONALITY_AVAILABLE    
    CActiveCommsMobilityApiExt* iMobility;
#endif    
    
    QNetworkSession::SessionError iError;
    TInt iALREnabled;
    TBool iALRUpgradingConnection;
    TBool iConnectInBackground;
    
    QList<QString> iKnownConfigsBeforeConnectionStart;
    
    TUint32 iOldRoamingIap;
    TUint32 iNewRoamingIap;

    bool isOpening;

    friend class ConnectionProgressNotifier;
    friend class ConnectionStarter;
};

class ConnectionProgressNotifier : public CActive
{
public:
    ConnectionProgressNotifier(QNetworkSessionPrivateImpl &owner, RConnection &connection);
    ~ConnectionProgressNotifier();
    
    void StartNotifications();
    void StopNotifications();
    
protected: // From CActive
    void RunL();
    void DoCancel();

private: // Data
    QNetworkSessionPrivateImpl &iOwner;
    RConnection& iConnection;
    TNifProgressBuf iProgress;
    
};

class ConnectionStarter : public CActive
{
public:
    ConnectionStarter(QNetworkSessionPrivateImpl &owner, RConnection &connection);
    ~ConnectionStarter();

    void Start();
    void Start(TConnPref &pref);
protected:
    void RunL();
    TInt RunError(TInt err);
    void DoCancel();

private: // Data
    QNetworkSessionPrivateImpl &iOwner;
    RConnection& iConnection;
};

QT_END_NAMESPACE

#endif //QNETWORKSESSION_IMPL_H