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#include <QtGui>

#include <QtNetwork>

#include "blockingclient.h"

BlockingClient::BlockingClient(QWidget *parent)

    : QDialog(parent)

{

    hostLabel = new QLabel(tr("&Server name:"));

    portLabel = new QLabel(tr("S&erver port:"));

    // find out which IP to connect to

    QString ipAddress;

    QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();

    // use the first non-localhost IPv4 address

    for (int i = 0; i < ipAddressesList.size(); ++i) {

        if (ipAddressesList.at(i) != QHostAddress::LocalHost &&

            ipAddressesList.at(i).toIPv4Address()) {

            ipAddress = ipAddressesList.at(i).toString();

            break;

        }

    }

    // if we did not find one, use IPv4 localhost

    if (ipAddress.isEmpty())

        ipAddress = QHostAddress(QHostAddress::LocalHost).toString();

    hostLineEdit = new QLineEdit(ipAddress);

    portLineEdit = new QLineEdit;

    portLineEdit->setValidator(new QIntValidator(1, 65535, this));

    hostLabel->setBuddy(hostLineEdit);

    portLabel->setBuddy(portLineEdit);

    statusLabel = new QLabel(tr("This examples requires that you run the "

                                "Fortune Server example as well."));

    getFortuneButton = new QPushButton(tr("Get Fortune"));

    getFortuneButton->setDefault(true);

    getFortuneButton->setEnabled(false);

    quitButton = new QPushButton(tr("Quit"));

    buttonBox = new QDialogButtonBox;

    buttonBox->addButton(getFortuneButton, QDialogButtonBox::ActionRole);

    buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);

    connect(hostLineEdit, SIGNAL(textChanged(QString)),

            this, SLOT(enableGetFortuneButton()));

    connect(portLineEdit, SIGNAL(textChanged(QString)),

            this, SLOT(enableGetFortuneButton()));

    connect(getFortuneButton, SIGNAL(clicked()),

            this, SLOT(requestNewFortune()));

    connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));

//! [0]

    connect(&thread, SIGNAL(newFortune(QString)),

            this, SLOT(showFortune(QString)));

//! [0] //! [1]

    connect(&thread, SIGNAL(error(int,QString)),

            this, SLOT(displayError(int,QString)));

//! [1]

    QGridLayout *mainLayout = new QGridLayout;

    mainLayout->addWidget(hostLabel, 0, 0);

    mainLayout->addWidget(hostLineEdit, 0, 1);

    mainLayout->addWidget(portLabel, 1, 0);

    mainLayout->addWidget(portLineEdit, 1, 1);

    mainLayout->addWidget(statusLabel, 2, 0, 1, 2);

    mainLayout->addWidget(buttonBox, 3, 0, 1, 2);

    setLayout(mainLayout);

    setWindowTitle(tr("Blocking Fortune Client"));

    portLineEdit->setFocus();

}

//! [2]

void BlockingClient::requestNewFortune()

{

    getFortuneButton->setEnabled(false);

    thread.requestNewFortune(hostLineEdit->text(),

                             portLineEdit->text().toInt());

}

//! [2]

//! [3]

void BlockingClient::showFortune(const QString &nextFortune)

{

    if (nextFortune == currentFortune) {

        requestNewFortune();

        return;

    }

//! [3]

//! [4]

    currentFortune = nextFortune;

    statusLabel->setText(currentFortune);

    getFortuneButton->setEnabled(true);

}

//! [4]

void BlockingClient::displayError(int socketError, const QString &message)

{

    switch (socketError) {

    case QAbstractSocket::HostNotFoundError:

        QMessageBox::information(this, tr("Blocking Fortune Client"),

                                 tr("The host was not found. Please check the "

                                    "host and port settings."));

        break;

    case QAbstractSocket::ConnectionRefusedError:

        QMessageBox::information(this, tr("Blocking Fortune Client"),

                                 tr("The connection was refused by the peer. "

                                    "Make sure the fortune server is running, "

                                    "and check that the host name and port "

                                    "settings are correct."));

        break;

    default:

        QMessageBox::information(this, tr("Blocking Fortune Client"),

                                 tr("The following error occurred: %1.")

                                 .arg(message));

    }

    getFortuneButton->setEnabled(true);

}

void BlockingClient::enableGetFortuneButton()

{

    getFortuneButton->setEnabled(!hostLineEdit->text().isEmpty()

                                 && !portLineEdit->text().isEmpty());

}