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153 lines
5.4 KiB
C++
153 lines
5.4 KiB
C++
/*
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* Copyright 2018 Markus Prasser
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*
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* This file is part of Labcontrol.
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*
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* Labcontrol is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Labcontrol is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Labcontrol. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "helpmessagewindow.h"
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#include "ui_helpmessagewindow.h"
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#include <QNetworkConfigurationManager>
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#include <QNetworkSession>
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#include <QSettings>
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#include <QTcpSocket>
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#include <iostream>
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lcHelpMessageWindow::lcHelpMessageWindow(const QString &argServerIP,
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const quint16 argServerPort,
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QWidget *const argParent) :
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QMainWindow{argParent},
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serverAddress{argServerIP},
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serverPort{argServerPort},
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ui{new Ui::HelpMessageWindow}
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{
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helpMessageSocket = new QTcpSocket{this};
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ui->setupUi(this);
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connect(ui->PBAskForHelp, &QPushButton::clicked,
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this, &lcHelpMessageWindow::RequestHelp);
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connect(helpMessageSocket, &QTcpSocket::readyRead,
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this, &lcHelpMessageWindow::ReadHelpReply);
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connect(helpMessageSocket,
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static_cast<void (QTcpSocket::*)(QAbstractSocket::SocketError)>
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(&QAbstractSocket::error),
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this, &lcHelpMessageWindow::DisplayError);
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QNetworkConfigurationManager manager;
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if (manager.capabilities()
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& QNetworkConfigurationManager::NetworkSessionRequired) {
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// Get saved network configuration
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QSettings settings{QSettings::UserScope, QLatin1String{"QtProject"}};
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settings.beginGroup(QLatin1String{"QtNetwork"});
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const auto id{settings.value("DefaultNetworkConfiguration").toString()};
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settings.endGroup();
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// If the saved network configuration is not currently discovered use the system default
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QNetworkConfiguration config = manager.configurationFromIdentifier(id);
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if ((config.state() & QNetworkConfiguration::Discovered)
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!= QNetworkConfiguration::Discovered) {
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config = manager.defaultConfiguration();
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}
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networkSession = new QNetworkSession{config, this};
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connect(networkSession, &QNetworkSession::opened,
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this, &lcHelpMessageWindow::OpenedSession);
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networkSession->open();
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}
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}
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lcHelpMessageWindow::~lcHelpMessageWindow() {
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delete ui;
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}
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void lcHelpMessageWindow::DisplayError(QAbstractSocket::SocketError argSocketError) {
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QString errorMessage;
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switch (argSocketError) {
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case QAbstractSocket::RemoteHostClosedError:
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return;
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case QAbstractSocket::HostNotFoundError:
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errorMessage = tr("An error occurred: The server could not be found for"
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" error reporting:\n");
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break;
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case QAbstractSocket::ConnectionRefusedError:
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errorMessage = tr("An error occurred: The connection was refused by the"
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" laboratory server:\n");
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break;
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default:
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errorMessage = tr("The following error occured:\n");
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}
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errorMessage.append(tr("%1").arg(helpMessageSocket->errorString()));
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errorMessage.append("\n\nPlease raise your hand to notify the experimenters.");
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ui->LSendingSuccess->setText(errorMessage);
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}
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void lcHelpMessageWindow::OpenedSession() {
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// Save the used configuration
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QString id;
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if (const auto config{networkSession->configuration()};
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config.type() == QNetworkConfiguration::UserChoice) {
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id = networkSession->sessionProperty(
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QLatin1String{"UserChoiceConfiguration"}).toString();
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} else {
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id = config.identifier();
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}
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QSettings settings{QSettings::UserScope, QLatin1String{"QtProject"}};
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settings.beginGroup(QLatin1String{"QtNetwork"});
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settings.setValue(QLatin1String{"DefaultNetworkConfiguration"}, id);
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settings.endGroup();
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}
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void lcHelpMessageWindow::ReadHelpReply() {
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QDataStream in{helpMessageSocket};
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in.setVersion(QDataStream::Qt_5_2);
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if (blockSize == 0) {
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if (helpMessageSocket->bytesAvailable()
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< static_cast<int>(sizeof(quint16))) {
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return;
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}
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in >> blockSize;
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}
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if (helpMessageSocket->bytesAvailable() < blockSize) {
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return;
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}
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QString serverAnswer;
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in >> serverAnswer;
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if (serverAnswer == "Help demand retrieved.") {
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ui->LSendingSuccess->setText(tr("Help message successfully"
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" sent.\nPlease wait for the"
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" experimenter to show up at your booth."));
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ui->PBAskForHelp->setEnabled(false);
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} else {
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ui->LSendingSuccess->setText(tr("An error occurred sending the help"
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" message. Please raise your"
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" arm.\n\n'%1'").arg(serverAnswer));
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}
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}
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void lcHelpMessageWindow::RequestHelp() {
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blockSize = 0;
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helpMessageSocket->abort();
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helpMessageSocket->connectToHost(serverAddress, serverPort);
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}
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