qt-everywhere-src-5.14.1/qtbase/examples/network/bearermonitor/sessionwidget.cpp

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#include "sessionwidget.h"
#include "qnetworkconfigmanager.h"

SessionWidget::SessionWidget(const QNetworkConfiguration &config, QWidget *parent)
:   QWidget(parent), statsTimer(-1)
{
    setupUi(this);

#ifdef QT_NO_NETWORKINTERFACE
    interfaceName->setVisible(false);
    interfaceNameLabel->setVisible(false);
    interfaceGuid->setVisible(false);
    interfaceGuidLabel->setVisible(false);
#endif

    session = new QNetworkSession(config, this);

    connect(session, SIGNAL(stateChanged(QNetworkSession::State)),
            this, SLOT(updateSession()));
    connect(session, SIGNAL(error(QNetworkSession::SessionError)),
            this, SLOT(updateSessionError(QNetworkSession::SessionError)));

    updateSession();

    sessionId->setText(QString("0x%1").arg(qulonglong(session), 8, 16, QChar('0')));

    configuration->setText(session->configuration().name());

    connect(openSessionButton, SIGNAL(clicked()),
            this, SLOT(openSession()));
    connect(openSyncSessionButton, SIGNAL(clicked()),
            this, SLOT(openSyncSession()));
    connect(closeSessionButton, SIGNAL(clicked()),
            this, SLOT(closeSession()));
    connect(stopSessionButton, SIGNAL(clicked()),
            this, SLOT(stopSession()));
}

SessionWidget::~SessionWidget()
{
    delete session;
}

void SessionWidget::timerEvent(QTimerEvent *e)
{
    if (e->timerId() == statsTimer) {
        rxData->setText(QString::number(session->bytesReceived()));
        txData->setText(QString::number(session->bytesWritten()));
        activeTime->setText(QString::number(session->activeTime()));
    }
}

void SessionWidget::updateSession()
{
    updateSessionState(session->state());

    if (session->state() == QNetworkSession::Connected)
        statsTimer = startTimer(1000);
    else if (statsTimer != -1)
        killTimer(statsTimer);

    if (session->configuration().type() == QNetworkConfiguration::InternetAccessPoint)
        bearer->setText(session->configuration().bearerTypeName());
    else {
        QNetworkConfigurationManager mgr;
        QNetworkConfiguration c = mgr.configurationFromIdentifier(session->sessionProperty("ActiveConfiguration").toString());
        bearer->setText(c.bearerTypeName());
    }

#ifndef QT_NO_NETWORKINTERFACE
    interfaceName->setText(session->interface().humanReadableName());
    interfaceGuid->setText(session->interface().name());
#endif
}

void SessionWidget::openSession()
{
    clearError();
    session->open();
    updateSession();
}

void SessionWidget::openSyncSession()
{
    clearError();
    session->open();
    session->waitForOpened();
    updateSession();
}

void SessionWidget::closeSession()
{
    clearError();
    session->close();
    updateSession();
}

void SessionWidget::stopSession()
{
    clearError();
    session->stop();
    updateSession();
}

void SessionWidget::updateSessionState(QNetworkSession::State state)
{
    QString s = tr("%1 (%2)");

    switch (state) {
    case QNetworkSession::Invalid:
        s = s.arg(tr("Invalid"));
        break;
    case QNetworkSession::NotAvailable:
        s = s.arg(tr("Not Available"));
        break;
    case QNetworkSession::Connecting:
        s = s.arg(tr("Connecting"));
        break;
    case QNetworkSession::Connected:
        s = s.arg(tr("Connected"));
        break;
    case QNetworkSession::Closing:
        s = s.arg(tr("Closing"));
        break;
    case QNetworkSession::Disconnected:
        s = s.arg(tr("Disconnected"));
        break;
    case QNetworkSession::Roaming:
        s = s.arg(tr("Roaming"));
        break;
    default:
        s = s.arg(tr("Unknown"));
    }

    if (session->isOpen())
        s = s.arg(tr("Open"));
    else
        s = s.arg(tr("Closed"));

    sessionState->setText(s);
}

void SessionWidget::updateSessionError(QNetworkSession::SessionError error)
{
    lastError->setText(QString::number(error));
    errorString->setText(session->errorString());
}

void SessionWidget::clearError()
{
    lastError->clear();
    errorString->clear();
}