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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "server.h"
#include <QDialogButtonBox>
#include <QGuiApplication>
#include <QHBoxLayout>
#include <QLabel>
#include <QLineEdit>
#include <QLocalSocket>
#include <QMessageBox>
#include <QPushButton>
#include <QRandomGenerator>
using namespace Qt::StringLiterals;
static const QString idleStateText = QObject::tr("Press \"Listen\" to start the server");
Server::Server(QWidget *parent)
: QDialog(parent),
server(new QLocalServer(this)),
hostLineEdit(new QLineEdit(u"fortune"_s)),
statusLabel(new QLabel(idleStateText)),
listenButton(new QPushButton(tr("Listen"))),
stopListeningButton(new QPushButton(tr("Stop Listening")))
{
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
statusLabel->setWordWrap(true);
stopListeningButton->setDisabled(true);
fortunes << tr("You've been leading a dog's life. Stay off the furniture.")
<< tr("You've got to think about tomorrow.")
<< tr("You will be surprised by a loud noise.")
<< tr("You will feel hungry again in another hour.")
<< tr("You might have mail.")
<< tr("You cannot kill time without injuring eternity.")
<< tr("Computers are not intelligent. They only think they are.");
QLabel *hostLabel = new QLabel(tr("Server name:"));
connect(server, &QLocalServer::newConnection, this, &Server::sendFortune);
connect(hostLineEdit, &QLineEdit::textChanged, this, &Server::toggleListenButton);
connect(listenButton, &QPushButton::clicked, this, &Server::listenToServer);
connect(stopListeningButton, &QPushButton::clicked,this, &Server::stopListening);
QPushButton *quitButton = new QPushButton(tr("Quit"));
quitButton->setAutoDefault(false);
connect(quitButton, &QPushButton::clicked, this, &Server::close);
QDialogButtonBox *buttonBox = new QDialogButtonBox;
buttonBox->addButton(listenButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(stopListeningButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
QGridLayout *mainLayout = new QGridLayout(this);
mainLayout->addWidget(hostLabel, 0, 0);
mainLayout->addWidget(hostLineEdit, 0, 1);
mainLayout->addWidget(statusLabel, 2, 0, 3, 2);
mainLayout->addWidget(buttonBox, 10, 0, 2, 2);
setWindowTitle(QGuiApplication::applicationDisplayName());
hostLineEdit->setFocus();
}
void Server::listenToServer()
{
name = hostLineEdit->text();
if (!server->listen(name)) {
QMessageBox::critical(this, tr("Local Fortune Server"),
tr("Unable to start the server: %1.")
.arg(server->errorString()));
name.clear();
return;
}
statusLabel->setText(tr("The server is running.\n"
"Run the Local Fortune Client example now."));
toggleListenButton();
}
void Server::stopListening()
{
server->close();
name.clear();
statusLabel->setText(idleStateText);
toggleListenButton();
}
void Server::toggleListenButton()
{
if (server->isListening()) {
listenButton->setDisabled(true);
stopListeningButton->setEnabled(true);
} else {
listenButton->setEnabled(!hostLineEdit->text().isEmpty());
stopListeningButton->setDisabled(true);
}
}
void Server::sendFortune()
{
QByteArray block;
QDataStream out(&block, QIODevice::WriteOnly);
out.setVersion(QDataStream::Qt_6_5);
const int fortuneIndex = QRandomGenerator::global()->bounded(0, fortunes.size());
const QString &message = fortunes.at(fortuneIndex);
out << message;
QLocalSocket *clientConnection = server->nextPendingConnection();
connect(clientConnection, &QLocalSocket::disconnected,
clientConnection, &QLocalSocket::deleteLater);
clientConnection->write(block);
clientConnection->flush();
clientConnection->disconnectFromServer();
}
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