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chat.cpp Example File

btchat/chat.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/
 **
 ** This file is part of the QtBluetooth module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
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 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
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 **     the names of its contributors may be used to endorse or promote
 **     products derived from this software without specific prior written
 **     permission.
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 ****************************************************************************/

 #include "chat.h"
 #include "remoteselector.h"
 #include "chatserver.h"
 #include "chatclient.h"

 #include <qbluetoothuuid.h>
 #include <qrfcommserver.h>
 #include <qbluetoothservicediscoveryagent.h>
 #include <qbluetoothdeviceinfo.h>
 #include <qbluetoothlocaldevice.h>

 #include <QTimer>

 #include <QDebug>

 static const QLatin1String serviceUuid("e8e10f95-1a70-4b27-9ccf-02010264e9c8");

 Chat::Chat(QWidget *parent)
 : QDialog(parent), ui(new Ui_Chat)
 {
     ui->setupUi(this);

 #if defined(Q_OS_WINCE) || defined(Q_WS_MAEMO_6)
     setWindowState(Qt::WindowFullScreen);
 #endif

     connect(ui->quitButton, SIGNAL(clicked()), this, SLOT(accept()));
     connect(ui->connectButton, SIGNAL(clicked()), this, SLOT(connectClicked()));
     connect(ui->sendButton, SIGNAL(clicked()), this, SLOT(sendClicked()));

     server = new ChatServer(this);
     connect(server, SIGNAL(clientConnected(QString)), this, SLOT(clientConnected(QString)));
     connect(server, SIGNAL(clientDisconnected(QString)), this, SLOT(clientDisconnected(QString)));
     connect(server, SIGNAL(messageReceived(QString,QString)),
             this, SLOT(showMessage(QString,QString)));
     connect(this, SIGNAL(sendMessage(QString)), server, SLOT(sendMessage(QString)));
     server->startServer();

     localName = QBluetoothLocalDevice().name();
 }

 Chat::~Chat()
 {
     qDeleteAll(clients);
     delete server;
 }

 void Chat::clientConnected(const QString &name)
 {
     ui->chat->insertPlainText(QString::fromLatin1("%1 has joined chat.\n").arg(name));
 }

 void Chat::clientDisconnected(const QString &name)
 {
     ui->chat->insertPlainText(QString::fromLatin1("%1 has left.\n").arg(name));
 }

 void Chat::connected(const QString &name)
 {
     ui->chat->insertPlainText(QString::fromLatin1("Joined chat with %1.\n").arg(name));
 }

 void Chat::clientDisconnected()
 {
     ChatClient *client = qobject_cast<ChatClient *>(sender());
     if (client) {
         clients.removeOne(client);
         client->deleteLater();
     }
 }

 void Chat::connectClicked()
 {
     ui->connectButton->setEnabled(false);

     // scan for services
     RemoteSelector remoteSelector;
     remoteSelector.startDiscovery(QBluetoothUuid(serviceUuid));
     if (remoteSelector.exec() == QDialog::Accepted) {
         QBluetoothServiceInfo service = remoteSelector.service();

         qDebug() << "Connecting to service 2" << service.serviceName()
                  << "on" << service.device().name();

         // Create client
         qDebug() << "Going to create client";
         ChatClient *client = new ChatClient(this);
 qDebug() << "Connecting...";

         connect(client, SIGNAL(messageReceived(QString,QString)),
                 this, SLOT(showMessage(QString,QString)));
         connect(client, SIGNAL(disconnected()), this, SLOT(clientDisconnected()));
         connect(client, SIGNAL(connected(QString)), this, SLOT(connected(QString)));
         connect(this, SIGNAL(sendMessage(QString)), client, SLOT(sendMessage(QString)));
 qDebug() << "Start client";
         client->startClient(service);

         clients.append(client);
     }

     ui->connectButton->setEnabled(true);
 }

 void Chat::sendClicked()
 {
     ui->sendButton->setEnabled(false);
     ui->sendText->setEnabled(false);

     showMessage(localName, ui->sendText->text());
     emit sendMessage(ui->sendText->text());

     ui->sendText->clear();

     ui->sendText->setEnabled(true);
     ui->sendButton->setEnabled(true);
 }

 void Chat::showMessage(const QString &sender, const QString &message)
 {
     ui->chat->insertPlainText(QString::fromLatin1("%1: %2\n").arg(sender, message));
 }
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