/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** use the contact form at http://qt.digia.com/contact-us.
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** Alternatively, this file may be used under the terms of the GNU
** 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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****************************************************************************/

#include "qbearerengine_p.h"

#ifndef QT_NO_BEARERMANAGEMENT

QT_BEGIN_NAMESPACE

QBearerEngine::QBearerEngine(QObject *parent)
    : QObject(parent), mutex(QMutex::Recursive)
{
}

QBearerEngine::~QBearerEngine()
{
    QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator it;
    QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator end;

    for (it = snapConfigurations.begin(), end = snapConfigurations.end(); it != end; ++it) {
        it.value()->isValid = false;
        it.value()->id.clear();
    }
    snapConfigurations.clear();

    for (it = accessPointConfigurations.begin(), end = accessPointConfigurations.end();
         it != end; ++it) {
        it.value()->isValid = false;
        it.value()->id.clear();
    }
    accessPointConfigurations.clear();

    for (it = userChoiceConfigurations.begin(), end = userChoiceConfigurations.end();
         it != end; ++it) {
        it.value()->isValid = false;
        it.value()->id.clear();
    }
    userChoiceConfigurations.clear();
}

bool QBearerEngine::requiresPolling() const
{
    return false;
}

/*
    Returns \c true if configurations are in use; otherwise returns \c false.

    If configurations are in use and requiresPolling() returns \c true, polling will be enabled for
    this engine.
*/
bool QBearerEngine::configurationsInUse() const
{
    QHash<QString, QNetworkConfigurationPrivatePointer>::ConstIterator it;
    QHash<QString, QNetworkConfigurationPrivatePointer>::ConstIterator end;

    QMutexLocker locker(&mutex);

    for (it = accessPointConfigurations.constBegin(),
         end = accessPointConfigurations.constEnd(); it != end; ++it) {
        if (it.value()->ref.load() > 1)
            return true;
    }

    for (it = snapConfigurations.constBegin(),
         end = snapConfigurations.constEnd(); it != end; ++it) {
        if (it.value()->ref.load() > 1)
            return true;
    }

    for (it = userChoiceConfigurations.constBegin(),
         end = userChoiceConfigurations.constEnd(); it != end; ++it) {
        if (it.value()->ref.load() > 1)
            return true;
    }

    return false;
}

#include "moc_qbearerengine_p.cpp"

#endif // QT_NO_BEARERMANAGEMENT

QT_END_NAMESPACE