605eec7b55
Ends up shortening the loop, making it easier to read at a glance. Pick-to: 6.5 Task-number: QTBUG-108875 Change-Id: Ia12a994259b00e9b57f2de48124be9cb38553bf5 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QtWidgets>
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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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const QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
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// use the first non-localhost IPv4 address
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for (const QHostAddress &entry : ipAddressesList) {
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if (entry != QHostAddress::LocalHost && entry.toIPv4Address()) {
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ipAddress = entry.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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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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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, &QPushButton::clicked,
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this, &BlockingClient::requestNewFortune);
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connect(quitButton, &QPushButton::clicked,
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this, &BlockingClient::close);
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connect(hostLineEdit, &QLineEdit::textChanged,
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this, &BlockingClient::enableGetFortuneButton);
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connect(portLineEdit, &QLineEdit::textChanged,
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this, &BlockingClient::enableGetFortuneButton);
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//! [0]
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connect(&thread, &FortuneThread::newFortune,
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this, &BlockingClient::showFortune);
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connect(&thread, &FortuneThread::error,
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this, &BlockingClient::displayError);
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//! [0]
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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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mainLayout->addWidget(buttonBox, 3, 0, 1, 2);
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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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//! [1]
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void BlockingClient::requestNewFortune()
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{
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getFortuneButton->setEnabled(false);
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thread.requestNewFortune(hostLineEdit->text(),
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portLineEdit->text().toInt());
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}
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//! [1]
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//! [2]
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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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//! [2]
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//! [3]
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currentFortune = nextFortune;
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statusLabel->setText(currentFortune);
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getFortuneButton->setEnabled(true);
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}
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//! [3]
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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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getFortuneButton->setEnabled(true);
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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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getFortuneButton->setEnabled(enable);
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}
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