211 lines
7.4 KiB
C++
211 lines
7.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtGui>
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#include <QtNetwork>
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#include "blockingclient.h"
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BlockingClient::BlockingClient(QWidget *parent)
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: QWidget(parent)
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{
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hostLabel = new QLabel(tr("&Server name:"));
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portLabel = new QLabel(tr("S&erver port:"));
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// find out which IP to connect to
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QString ipAddress;
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QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
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// use the first non-localhost IPv4 address
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for (int i = 0; i < ipAddressesList.size(); ++i) {
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if (ipAddressesList.at(i) != QHostAddress::LocalHost &&
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ipAddressesList.at(i).toIPv4Address()) {
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ipAddress = ipAddressesList.at(i).toString();
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break;
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}
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}
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// if we did not find one, use IPv4 localhost
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if (ipAddress.isEmpty())
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ipAddress = QHostAddress(QHostAddress::LocalHost).toString();
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hostLineEdit = new QLineEdit(ipAddress);
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portLineEdit = new QLineEdit;
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portLineEdit->setValidator(new QIntValidator(1, 65535, this));
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#if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
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Qt::InputMethodHint hints = Qt::ImhDigitsOnly;
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portLineEdit->setInputMethodHints(hints);
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#endif
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hostLabel->setBuddy(hostLineEdit);
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portLabel->setBuddy(portLineEdit);
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statusLabel = new QLabel(tr("This examples requires that you run the "
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"Fortune Server example as well."));
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statusLabel->setWordWrap(true);
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#ifdef Q_OS_SYMBIAN
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QMenu *menu = new QMenu(this);
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fortuneAction = menu->addAction(tr("Get Fortune"));
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fortuneAction->setVisible(false);
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QAction *optionsAction = new QAction(tr("Options"), this);
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optionsAction->setMenu(menu);
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optionsAction->setSoftKeyRole(QAction::PositiveSoftKey);
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addAction(optionsAction);
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exitAction = new QAction(tr("Exit"), this);
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exitAction->setSoftKeyRole(QAction::NegativeSoftKey);
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addAction(exitAction);
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connect(fortuneAction, SIGNAL(triggered()), this, SLOT(requestNewFortune()));
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connect(exitAction, SIGNAL(triggered()), this, SLOT(close()));
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#else
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getFortuneButton = new QPushButton(tr("Get Fortune"));
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getFortuneButton->setDefault(true);
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getFortuneButton->setEnabled(false);
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quitButton = new QPushButton(tr("Quit"));
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buttonBox = new QDialogButtonBox;
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buttonBox->addButton(getFortuneButton, QDialogButtonBox::ActionRole);
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buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
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connect(getFortuneButton, SIGNAL(clicked()), this, SLOT(requestNewFortune()));
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connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
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#endif
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connect(hostLineEdit, SIGNAL(textChanged(QString)),
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this, SLOT(enableGetFortuneButton()));
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connect(portLineEdit, SIGNAL(textChanged(QString)),
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this, SLOT(enableGetFortuneButton()));
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//! [0]
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connect(&thread, SIGNAL(newFortune(QString)),
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this, SLOT(showFortune(QString)));
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//! [0] //! [1]
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connect(&thread, SIGNAL(error(int,QString)),
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this, SLOT(displayError(int,QString)));
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//! [1]
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QGridLayout *mainLayout = new QGridLayout;
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mainLayout->addWidget(hostLabel, 0, 0);
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mainLayout->addWidget(hostLineEdit, 0, 1);
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mainLayout->addWidget(portLabel, 1, 0);
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mainLayout->addWidget(portLineEdit, 1, 1);
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mainLayout->addWidget(statusLabel, 2, 0, 1, 2);
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#ifndef Q_OS_SYMBIAN
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mainLayout->addWidget(buttonBox, 3, 0, 1, 2);
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#endif
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setLayout(mainLayout);
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setWindowTitle(tr("Blocking Fortune Client"));
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portLineEdit->setFocus();
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}
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//! [2]
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void BlockingClient::requestNewFortune()
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{
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#ifdef Q_OS_SYMBIAN
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fortuneAction->setVisible(false);
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#else
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getFortuneButton->setEnabled(false);
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#endif
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thread.requestNewFortune(hostLineEdit->text(),
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portLineEdit->text().toInt());
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}
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//! [2]
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//! [3]
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void BlockingClient::showFortune(const QString &nextFortune)
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{
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if (nextFortune == currentFortune) {
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requestNewFortune();
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return;
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}
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//! [3]
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//! [4]
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currentFortune = nextFortune;
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statusLabel->setText(currentFortune);
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#ifdef Q_OS_SYMBIAN
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fortuneAction->setVisible(true);
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#else
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getFortuneButton->setEnabled(true);
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#endif
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}
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//! [4]
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void BlockingClient::displayError(int socketError, const QString &message)
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{
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switch (socketError) {
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case QAbstractSocket::HostNotFoundError:
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QMessageBox::information(this, tr("Blocking Fortune Client"),
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tr("The host was not found. Please check the "
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"host and port settings."));
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break;
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case QAbstractSocket::ConnectionRefusedError:
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QMessageBox::information(this, tr("Blocking Fortune Client"),
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tr("The connection was refused by the peer. "
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"Make sure the fortune server is running, "
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"and check that the host name and port "
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"settings are correct."));
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break;
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default:
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QMessageBox::information(this, tr("Blocking Fortune Client"),
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tr("The following error occurred: %1.")
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.arg(message));
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}
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#ifdef Q_OS_SYMBIAN
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fortuneAction->setVisible(true);
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#else
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getFortuneButton->setEnabled(true);
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#endif
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}
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void BlockingClient::enableGetFortuneButton()
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{
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bool enable(!hostLineEdit->text().isEmpty() && !portLineEdit->text().isEmpty());
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#ifdef Q_OS_SYMBIAN
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fortuneAction->setVisible(enable);
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#else
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getFortuneButton->setEnabled(enable);
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#endif
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}
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