Qt Reference Documentation

# bearermonitor.cpp Example File

network/bearermonitor/bearermonitor.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the Qt Toolkit.
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     **
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     #include "bearermonitor.h"
     #include "sessionwidget.h"

     #include <QtCore/QDebug>

     #ifdef Q_OS_WIN
     #include <winsock2.h>
     #undef interface

     #ifndef NS_NLA
     #define NS_NLA 15
     #endif
     #endif

     BearerMonitor::BearerMonitor(QWidget *parent)
     :   QWidget(parent)
     {
         setupUi(this);
     #ifdef MAEMO_UI
         newSessionButton->hide();
         deleteSessionButton->hide();
     #else
         delete tabWidget->currentWidget();
         sessionGroup->hide();
     #endif
     #if defined(Q_OS_SYMBIAN) || defined(Q_OS_WINCE) || defined(MAEMO_UI) || defined(Q_WS_SIMULATOR)
         setWindowState(Qt::WindowMaximized);
     #endif
         updateConfigurations();
         onlineStateChanged(!manager.allConfigurations(QNetworkConfiguration::Active).isEmpty());
         QNetworkConfiguration defaultConfiguration = manager.defaultConfiguration();
         for (int i = 0; i < treeWidget->topLevelItemCount(); ++i) {
             QTreeWidgetItem *item = treeWidget->topLevelItem(i);

             if (item->data(0, Qt::UserRole).toString() == defaultConfiguration.identifier()) {
                 treeWidget->setCurrentItem(item);
                 showConfigurationFor(item);
                 break;
             }
         }
         connect(&manager, SIGNAL(onlineStateChanged(bool)), this ,SLOT(onlineStateChanged(bool)));
         connect(&manager, SIGNAL(configurationAdded(const QNetworkConfiguration&)),
                 this, SLOT(configurationAdded(const QNetworkConfiguration&)));
         connect(&manager, SIGNAL(configurationRemoved(const QNetworkConfiguration&)),
                 this, SLOT(configurationRemoved(const QNetworkConfiguration&)));
         connect(&manager, SIGNAL(configurationChanged(const QNetworkConfiguration&)),
                 this, SLOT(configurationChanged(const QNetworkConfiguration)));
         connect(&manager, SIGNAL(updateCompleted()), this, SLOT(updateConfigurations()));

     #if defined(Q_OS_WIN)
         connect(registerButton, SIGNAL(clicked()), this, SLOT(registerNetwork()));
         connect(unregisterButton, SIGNAL(clicked()), this, SLOT(unregisterNetwork()));
     #else
         nlaGroup->hide();
     #endif

         connect(treeWidget, SIGNAL(itemActivated(QTreeWidgetItem*,int)),
                 this, SLOT(createSessionFor(QTreeWidgetItem*)));

         connect(treeWidget, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)),
                 this, SLOT(showConfigurationFor(QTreeWidgetItem*)));

         connect(newSessionButton, SIGNAL(clicked()),
                 this, SLOT(createNewSession()));
     #ifndef MAEMO_UI
         connect(deleteSessionButton, SIGNAL(clicked()),
                 this, SLOT(deleteSession()));
     #endif
         connect(scanButton, SIGNAL(clicked()),
                 this, SLOT(performScan()));

         // Just in case update all configurations so that all
         // configurations are up to date.
         manager.updateConfigurations();
     }

     BearerMonitor::~BearerMonitor()
     {
     }

     static void updateItem(QTreeWidgetItem *item, const QNetworkConfiguration &config)
     {
         item->setText(0, config.name());
         item->setData(0, Qt::UserRole, config.identifier());

         QFont font = item->font(1);
         font.setBold((config.state() & QNetworkConfiguration::Active) == QNetworkConfiguration::Active);
         item->setFont(0, font);
     }

     void BearerMonitor::configurationAdded(const QNetworkConfiguration &config, QTreeWidgetItem *parent)
     {
         QTreeWidgetItem *item = new QTreeWidgetItem;
         updateItem(item, config);

         if (parent)
             parent->addChild(item);
         else
             treeWidget->addTopLevelItem(item);

         if (config.type() == QNetworkConfiguration::ServiceNetwork) {
             foreach (const QNetworkConfiguration &child, config.children())
                 configurationAdded(child, item);
         }
     }

     void BearerMonitor::configurationRemoved(const QNetworkConfiguration &config)
     {
         for (int i = 0; i < treeWidget->topLevelItemCount(); ++i) {
             QTreeWidgetItem *item = treeWidget->topLevelItem(i);

             if (item->data(0, Qt::UserRole).toString() == config.identifier()) {
                 delete item;
                 break;
             }
         }
     }

     void BearerMonitor::configurationChanged(const QNetworkConfiguration &config)
     {
         for (int i = 0; i < treeWidget->topLevelItemCount(); ++i) {
             QTreeWidgetItem *item = treeWidget->topLevelItem(i);

             if (item->data(0, Qt::UserRole).toString() == config.identifier()) {
                 updateItem(item, config);

                 if (config.type() == QNetworkConfiguration::ServiceNetwork)
                     updateSnapConfiguration(item, config);

                 if (item == treeWidget->currentItem())
                     showConfigurationFor(item);

                 break;
             }
         }
     }

     void BearerMonitor::updateSnapConfiguration(QTreeWidgetItem *parent, const QNetworkConfiguration &snap)
     {
         QMap<QString, QTreeWidgetItem *> itemMap;
         foreach (QTreeWidgetItem *item, parent->takeChildren())
             itemMap.insert(item->data(0, Qt::UserRole).toString(), item);

         QList<QNetworkConfiguration> allConfigurations = snap.children();

         while (!allConfigurations.isEmpty()) {
             QNetworkConfiguration config = allConfigurations.takeFirst();

             QTreeWidgetItem *item = itemMap.take(config.identifier());
             if (item) {
                 updateItem(item, config);

                 parent->addChild(item);

                 if (config.type() == QNetworkConfiguration::ServiceNetwork)
                     updateSnapConfiguration(item, config);
             } else {
                 configurationAdded(config, parent);
             }
         }

         qDeleteAll(itemMap);
     }

     void BearerMonitor::updateConfigurations()
     {
         progressBar->hide();
         scanButton->show();

         // Just in case update online state, on Symbian platform
         // WLAN scan needs to be triggered initially to have their true state.
         onlineStateChanged(manager.isOnline());

         QList<QTreeWidgetItem *> items = treeWidget->findItems(QLatin1String("*"), Qt::MatchWildcard);
         QMap<QString, QTreeWidgetItem *> itemMap;
         while (!items.isEmpty()) {
             QTreeWidgetItem *item = items.takeFirst();
             itemMap.insert(item->data(0, Qt::UserRole).toString(), item);
         }

         QNetworkConfiguration defaultConfiguration = manager.defaultConfiguration();
         QTreeWidgetItem *defaultItem = itemMap.take(defaultConfiguration.identifier());

         if (defaultItem) {
             updateItem(defaultItem, defaultConfiguration);

             if (defaultConfiguration.type() == QNetworkConfiguration::ServiceNetwork)
                 updateSnapConfiguration(defaultItem, defaultConfiguration);
         } else {
             configurationAdded(defaultConfiguration);
         }

         QList<QNetworkConfiguration> allConfigurations = manager.allConfigurations();

         while (!allConfigurations.isEmpty()) {
             QNetworkConfiguration config = allConfigurations.takeFirst();

             if (config.identifier() == defaultConfiguration.identifier())
                 continue;

             QTreeWidgetItem *item = itemMap.take(config.identifier());
             if (item) {
                 updateItem(item, config);

                 if (config.type() == QNetworkConfiguration::ServiceNetwork)
                     updateSnapConfiguration(item, config);
             } else {
                 configurationAdded(config);
             }
         }

         qDeleteAll(itemMap);
     }

     void BearerMonitor::onlineStateChanged(bool isOnline)
     {
         if (isOnline)
             onlineState->setText(tr("Online"));
         else
             onlineState->setText(tr("Offline"));
     }

     #if defined(Q_OS_WIN)
     void BearerMonitor::registerNetwork()
     {
         QTreeWidgetItem *item = treeWidget->currentItem();
         if (!item) return;

         QNetworkConfiguration configuration =
             manager.configurationFromIdentifier(item->data(0, Qt::UserRole).toString());

         const QString name = configuration.name();

         qDebug() << "Registering" << name << "with system";

         WSAQUERYSET networkInfo;
         memset(&networkInfo, 0, sizeof(networkInfo));
         networkInfo.dwSize = sizeof(networkInfo);
         networkInfo.lpszServiceInstanceName = (LPWSTR)name.utf16();
         networkInfo.dwNameSpace = NS_NLA;

         if (WSASetService(&networkInfo, RNRSERVICE_REGISTER, 0) == SOCKET_ERROR)
             qDebug() << "WSASetService(RNRSERVICE_REGISTER) returned" << WSAGetLastError();
     }

     void BearerMonitor::unregisterNetwork()
     {
         QTreeWidgetItem *item = treeWidget->currentItem();
         if (!item) return;

         QNetworkConfiguration configuration =
             manager.configurationFromIdentifier(item->data(0, Qt::UserRole).toString());

         const QString name = configuration.name();

         qDebug() << "Unregistering" << name << "with system";

         WSAQUERYSET networkInfo;
         memset(&networkInfo, 0, sizeof(networkInfo));
         networkInfo.dwSize = sizeof(networkInfo);
         networkInfo.lpszServiceInstanceName = (LPWSTR)name.utf16();
         networkInfo.dwNameSpace = NS_NLA;

         if (WSASetService(&networkInfo, RNRSERVICE_DELETE, 0) == SOCKET_ERROR)
             qDebug() << "WSASetService(RNRSERVICE_DELETE) returned" << WSAGetLastError();
     }
     #endif

     void BearerMonitor::showConfigurationFor(QTreeWidgetItem *item)
     {
         QString identifier;

         if (item)
             identifier = item->data(0, Qt::UserRole).toString();

         QNetworkConfiguration conf = manager.configurationFromIdentifier(identifier);

         switch (conf.state()) {
         case QNetworkConfiguration::Active:
             configurationState->setText(tr("Active"));
             break;
         case QNetworkConfiguration::Discovered:
             configurationState->setText(tr("Discovered"));
             break;
         case QNetworkConfiguration::Defined:
             configurationState->setText(tr("Defined"));
             break;
         case QNetworkConfiguration::Undefined:
             configurationState->setText(tr("Undefined"));
             break;
         default:
             configurationState->setText(QString());
         }

         switch (conf.type()) {
         case QNetworkConfiguration::InternetAccessPoint:
             configurationType->setText(tr("Internet Access Point"));
             break;
         case QNetworkConfiguration::ServiceNetwork:
             configurationType->setText(tr("Service Network"));
             break;
         case QNetworkConfiguration::UserChoice:
             configurationType->setText(tr("User Choice"));
             break;
         case QNetworkConfiguration::Invalid:
             configurationType->setText(tr("Invalid"));
             break;
         default:
             configurationType->setText(QString());
         }

         switch (conf.purpose()) {
         case QNetworkConfiguration::UnknownPurpose:
             configurationPurpose->setText(tr("Unknown"));
             break;
         case QNetworkConfiguration::PublicPurpose:
             configurationPurpose->setText(tr("Public"));
             break;
         case QNetworkConfiguration::PrivatePurpose:
             configurationPurpose->setText(tr("Private"));
             break;
         case QNetworkConfiguration::ServiceSpecificPurpose:
             configurationPurpose->setText(tr("Service Specific"));
             break;
         default:
             configurationPurpose->setText(QString());
         }

         configurationIdentifier->setText(conf.identifier());

         configurationRoaming->setText(conf.isRoamingAvailable() ? tr("Available") : tr("Not available"));

         configurationChildren->setText(QString::number(conf.children().count()));

         configurationName->setText(conf.name());
     }

     void BearerMonitor::createSessionFor(QTreeWidgetItem *item)
     {
         const QString identifier = item->data(0, Qt::UserRole).toString();

         QNetworkConfiguration conf = manager.configurationFromIdentifier(identifier);

         SessionWidget *session = new SessionWidget(conf);

         tabWidget->addTab(session, conf.name());

     #ifndef MAEMO_UI
         sessionGroup->show();
     #endif

         sessionWidgets.append(session);
     }

     void BearerMonitor::createNewSession()
     {
         QTreeWidgetItem *item = treeWidget->currentItem();
         if (!item) return;

         createSessionFor(item);
     }

     #ifndef MAEMO_UI
     void BearerMonitor::deleteSession()
     {
         SessionWidget *session = qobject_cast<SessionWidget *>(tabWidget->currentWidget());
         if (session) {
             sessionWidgets.removeAll(session);

             delete session;

             if (tabWidget->count() == 0)
                 sessionGroup->hide();
         }
     }
     #endif

     void BearerMonitor::performScan()
     {
         scanButton->hide();
         progressBar->show();
         manager.updateConfigurations();
     }