/****************************************************************************
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** General Public License version 2.1 as published by the Free Software
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** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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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 "qbearerengine_impl.h"

#include <QtNetwork/private/qnetworkconfigmanager_p.h>
#include <QtNetwork/private/qnetworksession_p.h>

#ifndef QT_NO_BEARERMANAGEMENT

QT_BEGIN_NAMESPACE

class QBearerEngineImpl;

class QNetworkSessionPrivateImpl : public QNetworkSessionPrivate
{
    Q_OBJECT

public:
    QNetworkSessionPrivateImpl()
        : engine(0), startTime(0), lastError(QNetworkSession::UnknownSessionError), sessionTimeout(-1), currentPolicies(QNetworkSession::NoPolicy), opened(false)
    {}
    ~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 open();
    void close();
    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;

    QNetworkSession::UsagePolicies usagePolicies() const;
    void setUsagePolicies(QNetworkSession::UsagePolicies);

private Q_SLOTS:
    void networkConfigurationsChanged();
    void configurationChanged(QNetworkConfigurationPrivatePointer config);
    void forcedSessionClose(const QNetworkConfiguration &config);
    void connectionError(const QString &id, QBearerEngineImpl::ConnectionError error);
    void decrementTimeout();

private:
    void updateStateFromServiceNetwork();
    void updateStateFromActiveConfig();

private:
    QBearerEngineImpl *engine;

    quint64 startTime;

    QNetworkSession::SessionError lastError;

    int sessionTimeout;
    QNetworkSession::UsagePolicies currentPolicies;

    bool opened;
};

QT_END_NAMESPACE

#endif // QT_NO_BEARERMANAGEMENT

#endif // QNETWORKSESSION_IMPL_H
