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<h1 class="title">chat.cpp Example File</h1>
<span class="subtitle">btchat/chat.cpp</span>
<!-- $$$btchat/chat.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtBluetooth module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  <span class="preprocessor">#include &quot;chat.h&quot;</span>
  <span class="preprocessor">#include &quot;remoteselector.h&quot;</span>
  <span class="preprocessor">#include &quot;chatserver.h&quot;</span>
  <span class="preprocessor">#include &quot;chatclient.h&quot;</span>

  <span class="preprocessor">#include &lt;QtCore/qdebug.h&gt;</span>

  <span class="preprocessor">#include &lt;QtBluetooth/qbluetoothdeviceinfo.h&gt;</span>
  <span class="preprocessor">#include &lt;QtBluetooth/qbluetoothlocaldevice.h&gt;</span>
  <span class="preprocessor">#include &lt;QtBluetooth/qbluetoothuuid.h&gt;</span>

  <span class="preprocessor">#ifdef Q_OS_ANDROID</span>
  <span class="preprocessor">#include &lt;QtAndroidExtras/QtAndroid&gt;</span>
  <span class="preprocessor">#endif</span>

  <span class="keyword">static</span> <span class="keyword">const</span> QLatin1String serviceUuid(<span class="string">&quot;e8e10f95-1a70-4b27-9ccf-02010264e9c8&quot;</span>);
  <span class="preprocessor">#ifdef Q_OS_ANDROID</span>
  <span class="keyword">static</span> <span class="keyword">const</span> QLatin1String reverseUuid(<span class="string">&quot;c8e96402-0102-cf9c-274b-701a950fe1e8&quot;</span>);
  <span class="preprocessor">#endif</span>

  Chat<span class="operator">::</span>Chat(<span class="type">QWidget</span> <span class="operator">*</span>parent)
      : <span class="type">QDialog</span>(parent)<span class="operator">,</span> ui(<span class="keyword">new</span> Ui_Chat)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>setupUi(<span class="keyword">this</span>);

      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>quitButton<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>accept);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>connectButton<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>connectClicked);
      connect(ui<span class="operator">-</span><span class="operator">&gt;</span>sendButton<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>sendClicked);

      localAdapters <span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>allDevices();
      <span class="keyword">if</span> (localAdapters<span class="operator">.</span>count() <span class="operator">&lt;</span> <span class="number">2</span>) {
          ui<span class="operator">-</span><span class="operator">&gt;</span>localAdapterBox<span class="operator">-</span><span class="operator">&gt;</span>setVisible(<span class="keyword">false</span>);
      } <span class="keyword">else</span> {
          <span class="comment">//we ignore more than two adapters</span>
          ui<span class="operator">-</span><span class="operator">&gt;</span>localAdapterBox<span class="operator">-</span><span class="operator">&gt;</span>setVisible(<span class="keyword">true</span>);
          ui<span class="operator">-</span><span class="operator">&gt;</span>firstAdapter<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Default (%1)&quot;</span><span class="operator">,</span> <span class="string">&quot;%1 = Bluetooth address&quot;</span>)<span class="operator">.</span>
                                    arg(localAdapters<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>address()<span class="operator">.</span>toString()));
          ui<span class="operator">-</span><span class="operator">&gt;</span>secondAdapter<span class="operator">-</span><span class="operator">&gt;</span>setText(localAdapters<span class="operator">.</span>at(<span class="number">1</span>)<span class="operator">.</span>address()<span class="operator">.</span>toString());
          ui<span class="operator">-</span><span class="operator">&gt;</span>firstAdapter<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
          connect(ui<span class="operator">-</span><span class="operator">&gt;</span>firstAdapter<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QRadioButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>newAdapterSelected);
          connect(ui<span class="operator">-</span><span class="operator">&gt;</span>secondAdapter<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QRadioButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>newAdapterSelected);
          <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span> adapter(localAdapters<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>address());
          adapter<span class="operator">.</span>setHostMode(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostDiscoverable);
      }

      server <span class="operator">=</span> <span class="keyword">new</span> ChatServer(<span class="keyword">this</span>);
      connect(server<span class="operator">,</span> <span class="type">QOverload</span><span class="operator">&lt;</span><span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span>ChatServer<span class="operator">::</span>clientConnected)<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>clientConnected);
      connect(server<span class="operator">,</span> <span class="type">QOverload</span><span class="operator">&lt;</span><span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span>ChatServer<span class="operator">::</span>clientDisconnected)<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span>  <span class="type">QOverload</span><span class="operator">&lt;</span><span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span>Chat<span class="operator">::</span>clientDisconnected));
      connect(server<span class="operator">,</span> <span class="operator">&amp;</span>ChatServer<span class="operator">::</span>messageReceived<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span>  <span class="operator">&amp;</span>Chat<span class="operator">::</span>showMessage);
      connect(<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>sendMessage<span class="operator">,</span> server<span class="operator">,</span> <span class="operator">&amp;</span>ChatServer<span class="operator">::</span>sendMessage);
      server<span class="operator">-</span><span class="operator">&gt;</span>startServer();

      localName <span class="operator">=</span> <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span>()<span class="operator">.</span>name();
  }

  Chat<span class="operator">::</span><span class="operator">~</span>Chat()
  {
      qDeleteAll(clients);
      <span class="keyword">delete</span> server;
  }

  <span class="type">void</span> Chat<span class="operator">::</span>clientConnected(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>name)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>chat<span class="operator">-</span><span class="operator">&gt;</span>insertPlainText(<span class="type">QString</span><span class="operator">::</span>fromLatin1(<span class="string">&quot;%1 has joined chat.\n&quot;</span>)<span class="operator">.</span>arg(name));
  }

  <span class="type">void</span> Chat<span class="operator">::</span>clientDisconnected(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>name)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>chat<span class="operator">-</span><span class="operator">&gt;</span>insertPlainText(<span class="type">QString</span><span class="operator">::</span>fromLatin1(<span class="string">&quot;%1 has left.\n&quot;</span>)<span class="operator">.</span>arg(name));
  }

  <span class="type">void</span> Chat<span class="operator">::</span>connected(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>name)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>chat<span class="operator">-</span><span class="operator">&gt;</span>insertPlainText(<span class="type">QString</span><span class="operator">::</span>fromLatin1(<span class="string">&quot;Joined chat with %1.\n&quot;</span>)<span class="operator">.</span>arg(name));
  }

  <span class="type">void</span> Chat<span class="operator">::</span>newAdapterSelected()
  {
      <span class="keyword">const</span> <span class="type">int</span> newAdapterIndex <span class="operator">=</span> adapterFromUserSelection();
      <span class="keyword">if</span> (currentAdapterIndex <span class="operator">!</span><span class="operator">=</span> newAdapterIndex) {
          server<span class="operator">-</span><span class="operator">&gt;</span>stopServer();
          currentAdapterIndex <span class="operator">=</span> newAdapterIndex;
          <span class="keyword">const</span> <span class="type"><a href="qbluetoothhostinfo.html">QBluetoothHostInfo</a></span> info <span class="operator">=</span> localAdapters<span class="operator">.</span>at(currentAdapterIndex);
          <span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span> adapter(info<span class="operator">.</span>address());
          adapter<span class="operator">.</span>setHostMode(<span class="type"><a href="qbluetoothlocaldevice.html">QBluetoothLocalDevice</a></span><span class="operator">::</span>HostDiscoverable);
          server<span class="operator">-</span><span class="operator">&gt;</span>startServer(info<span class="operator">.</span>address());
          localName <span class="operator">=</span> info<span class="operator">.</span>name();
      }
  }

  <span class="type">int</span> Chat<span class="operator">::</span>adapterFromUserSelection() <span class="keyword">const</span>
  {
      <span class="type">int</span> result <span class="operator">=</span> <span class="number">0</span>;
      <span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span> newAdapter <span class="operator">=</span> localAdapters<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>address();

      <span class="keyword">if</span> (ui<span class="operator">-</span><span class="operator">&gt;</span>secondAdapter<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
          newAdapter <span class="operator">=</span> localAdapters<span class="operator">.</span>at(<span class="number">1</span>)<span class="operator">.</span>address();
          result <span class="operator">=</span> <span class="number">1</span>;
      }
      <span class="keyword">return</span> result;
  }

  <span class="type">void</span> Chat<span class="operator">::</span>reactOnSocketError(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>error)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>chat<span class="operator">-</span><span class="operator">&gt;</span>insertPlainText(error);
  }

  <span class="type">void</span> Chat<span class="operator">::</span>clientDisconnected()
  {
      ChatClient <span class="operator">*</span>client <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span>ChatClient <span class="operator">*</span><span class="operator">&gt;</span>(sender());
      <span class="keyword">if</span> (client) {
          clients<span class="operator">.</span>removeOne(client);
          client<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
      }
  }

  <span class="type">void</span> Chat<span class="operator">::</span>connectClicked()
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>connectButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);

      <span class="comment">// scan for services</span>
      <span class="keyword">const</span> <span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span> adapter <span class="operator">=</span> localAdapters<span class="operator">.</span>isEmpty() <span class="operator">?</span>
                                             <span class="type"><a href="qbluetoothaddress.html">QBluetoothAddress</a></span>() :
                                             localAdapters<span class="operator">.</span>at(currentAdapterIndex)<span class="operator">.</span>address();

      RemoteSelector remoteSelector(adapter);
  <span class="preprocessor">#ifdef Q_OS_ANDROID</span>
      <span class="keyword">if</span> (<span class="type">QtAndroid</span><span class="operator">::</span>androidSdkVersion() <span class="operator">&gt;</span><span class="operator">=</span> <span class="number">23</span>)
          remoteSelector<span class="operator">.</span>startDiscovery(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(reverseUuid));
      <span class="keyword">else</span>
          remoteSelector<span class="operator">.</span>startDiscovery(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(serviceUuid));
  <span class="preprocessor">#else</span>
      remoteSelector<span class="operator">.</span>startDiscovery(<span class="type"><a href="qbluetoothuuid.html">QBluetoothUuid</a></span>(serviceUuid));
  <span class="preprocessor">#endif</span>
      <span class="keyword">if</span> (remoteSelector<span class="operator">.</span>exec() <span class="operator">=</span><span class="operator">=</span> <span class="type">QDialog</span><span class="operator">::</span>Accepted) {
          <span class="type"><a href="qbluetoothserviceinfo.html">QBluetoothServiceInfo</a></span> service <span class="operator">=</span> remoteSelector<span class="operator">.</span>service();

          qDebug() <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="string">&quot;Connecting to service 2&quot;</span> <span class="operator">&lt;</span><span class="operator">&lt;</span> service<span class="operator">.</span>serviceName()
                   <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="string">&quot;on&quot;</span> <span class="operator">&lt;</span><span class="operator">&lt;</span> service<span class="operator">.</span>device()<span class="operator">.</span>name();

          <span class="comment">// Create client</span>
          qDebug() <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="string">&quot;Going to create client&quot;</span>;
          ChatClient <span class="operator">*</span>client <span class="operator">=</span> <span class="keyword">new</span> ChatClient(<span class="keyword">this</span>);
  qDebug() <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="string">&quot;Connecting...&quot;</span>;

          connect(client<span class="operator">,</span> <span class="operator">&amp;</span>ChatClient<span class="operator">::</span>messageReceived<span class="operator">,</span>
                  <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>showMessage);
          connect(client<span class="operator">,</span> <span class="operator">&amp;</span>ChatClient<span class="operator">::</span>disconnected<span class="operator">,</span>
                  <span class="keyword">this</span><span class="operator">,</span> <span class="type">QOverload</span><span class="operator">&lt;</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span>Chat<span class="operator">::</span>clientDisconnected));
          connect(client<span class="operator">,</span> <span class="type">QOverload</span><span class="operator">&lt;</span><span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span>ChatClient<span class="operator">::</span>connected)<span class="operator">,</span>
                  <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>connected);
          connect(client<span class="operator">,</span> <span class="operator">&amp;</span>ChatClient<span class="operator">::</span>socketErrorOccurred<span class="operator">,</span>
                  <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>reactOnSocketError);
          connect(<span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>Chat<span class="operator">::</span>sendMessage<span class="operator">,</span> client<span class="operator">,</span> <span class="operator">&amp;</span>ChatClient<span class="operator">::</span>sendMessage);
  qDebug() <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="string">&quot;Start client&quot;</span>;
          client<span class="operator">-</span><span class="operator">&gt;</span>startClient(service);

          clients<span class="operator">.</span>append(client);
      }

      ui<span class="operator">-</span><span class="operator">&gt;</span>connectButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
  }

  <span class="type">void</span> Chat<span class="operator">::</span>sendClicked()
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>sendButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
      ui<span class="operator">-</span><span class="operator">&gt;</span>sendText<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);

      showMessage(localName<span class="operator">,</span> ui<span class="operator">-</span><span class="operator">&gt;</span>sendText<span class="operator">-</span><span class="operator">&gt;</span>text());
      <span class="keyword">emit</span> sendMessage(ui<span class="operator">-</span><span class="operator">&gt;</span>sendText<span class="operator">-</span><span class="operator">&gt;</span>text());

      ui<span class="operator">-</span><span class="operator">&gt;</span>sendText<span class="operator">-</span><span class="operator">&gt;</span>clear();

      ui<span class="operator">-</span><span class="operator">&gt;</span>sendText<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
      ui<span class="operator">-</span><span class="operator">&gt;</span>sendButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
  }

  <span class="type">void</span> Chat<span class="operator">::</span>showMessage(<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>sender<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&amp;</span>message)
  {
      ui<span class="operator">-</span><span class="operator">&gt;</span>chat<span class="operator">-</span><span class="operator">&gt;</span>insertPlainText(<span class="type">QString</span><span class="operator">::</span>fromLatin1(<span class="string">&quot;%1: %2\n&quot;</span>)<span class="operator">.</span>arg(sender<span class="operator">,</span> message));
      ui<span class="operator">-</span><span class="operator">&gt;</span>chat<span class="operator">-</span><span class="operator">&gt;</span>ensureCursorVisible();
  }

</pre>
</div>
<!-- @@@btchat/chat.cpp -->
        </div>
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