Refactor the UI of CAN example application

* The SettingsDialog class is added
* The menu-bar actions and icons are added
* All widgets are wrapped with layouts
* A code related to device accessing is modified

Change-Id: I45d056951163441195f61df411669d1130a41867
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>

13 files changed, 667 insertions, 366 deletions

diff --git a/examples/serialbus/can/can.pro b/examples/serialbus/can/can.pro
index 3e85168..a5e2b19 100644
--- a/examples/serialbus/can/can.pro
+++ b/examples/serialbus/can/can.pro
@@ -4,8 +4,13 @@ TARGET = can
 TEMPLATE = app
 
 SOURCES += main.cpp \
-        mainwindow.cpp
+    mainwindow.cpp \
+    settingsdialog.cpp
 
-HEADERS += mainwindow.h
+HEADERS += mainwindow.h \
+    settingsdialog.h
 
-FORMS   += mainwindow.ui
+FORMS   += mainwindow.ui \
+    settingsdialog.ui
+
+RESOURCES += can.qrc
diff --git a/examples/serialbus/can/can.qrc b/examples/serialbus/can/can.qrc
new file mode 100644
index 0000000..0b49879
--- /dev/null
+++ b/examples/serialbus/can/can.qrc
@@ -0,0 +1,9 @@
+<RCC>
+    <qresource prefix="/">
+        <file>images/connect.png</file>
+        <file>images/disconnect.png</file>
+        <file>images/application-exit.png</file>
+        <file>images/settings.png</file>
+        <file>images/clear.png</file>
+    </qresource>
+</RCC>
diff --git a/examples/serialbus/can/images/application-exit.png b/examples/serialbus/can/images/application-exit.png
new file mode 100644
index 0000000..32be6b3
--- /dev/null
+++ b/examples/serialbus/can/images/application-exit.png
diff --git a/examples/serialbus/can/images/clear.png b/examples/serialbus/can/images/clear.png
new file mode 100644
index 0000000..aa612f1
--- /dev/null
+++ b/examples/serialbus/can/images/clear.png
diff --git a/examples/serialbus/can/images/connect.png b/examples/serialbus/can/images/connect.png
new file mode 100644
index 0000000..dd5a51e
--- /dev/null
+++ b/examples/serialbus/can/images/connect.png
diff --git a/examples/serialbus/can/images/disconnect.png b/examples/serialbus/can/images/disconnect.png
new file mode 100644
index 0000000..fd58f7a
--- /dev/null
+++ b/examples/serialbus/can/images/disconnect.png
diff --git a/examples/serialbus/can/images/settings.png b/examples/serialbus/can/images/settings.png
new file mode 100644
index 0000000..3d1042e
--- /dev/null
+++ b/examples/serialbus/can/images/settings.png
diff --git a/examples/serialbus/can/mainwindow.cpp b/examples/serialbus/can/mainwindow.cpp
index 2320c30..8ea4701 100644
--- a/examples/serialbus/can/mainwindow.cpp
+++ b/examples/serialbus/can/mainwindow.cpp
@@ -40,9 +40,10 @@
 
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
+#include "settingsdialog.h"
 
-#include <QtSerialBus>
 #include <QCanBusFrame>
+#include <QCanBus>
 
 #include <QtCore/qbytearray.h>
 #include <QtCore/qvariant.h>
@@ -50,53 +51,49 @@
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
-    deviceName(QStringLiteral("")),
-    ui(new Ui::MainWindow)
+    m_ui(new Ui::MainWindow),
+    m_canDevice(Q_NULLPTR)
 {
-    ui->setupUi(this);
-    init();
-}
+    m_ui->setupUi(this);
 
-MainWindow::~MainWindow()
-{
-    delete ui;
-}
+    m_settings = new SettingsDialog;
 
+    m_status = new QLabel;
+    m_ui->statusBar->addWidget(m_status);
 
-void MainWindow::init()
-{
-    QPointer<QCanBus> canBus = QCanBus::instance();
+    m_ui->sendMessagesBox->setEnabled(false);
+
+    initActionsConnections();
 
-    plugins = canBus->plugins();
-    for (int i = 0; i < plugins.size(); i++)
-        ui->pluginBox->insertItem(i, plugins.at(i));
-    connectDevice(ui->pluginBox->currentIndex());
+    connect(m_ui->sendButton, &QPushButton::clicked, this, &MainWindow::sendMessage);
 }
 
-void MainWindow::connectDevice(int pluginIndex)
+MainWindow::~MainWindow()
 {
-    QPointer<QCanBus> canBus = QCanBus::instance();
-
-    canDevice = canBus->createDevice(plugins.at(pluginIndex), deviceName);
-
-    if (canDevice.isNull())
-        return;
-    connect(canDevice.data(), &QCanBusDevice::errorOccurred, this, &MainWindow::receiveError);
+    if (m_canDevice)
+        delete m_canDevice;
 
-    if (!canDevice->connectDevice()) {
-        canDevice.clear();
-        return;
-    }
-    canDevice->setConfigurationParameter(QCanBusDevice::ReceiveOwnKey, QVariant(true));
-    canDevice->setConfigurationParameter(
-                QCanBusDevice::ErrorFilterKey,
-                QVariant::fromValue(QCanBusFrame::FrameErrors(QCanBusFrame::AnyError)));
-    connect(canDevice.data(), &QCanBusDevice::frameReceived,
-            this, &MainWindow::checkMessages);
+    delete m_settings;
+    delete m_ui;
+}
 
-    ui->deviceLabel->setText("Connected to: " + deviceName);
+void MainWindow::showStatusMessage(const QString &message)
+{
+    m_status->setText(message);
+}
 
-    checkMessages();
+void MainWindow::initActionsConnections()
+{
+    m_ui->actionConnect->setEnabled(true);
+    m_ui->actionDisconnect->setEnabled(false);
+    m_ui->actionQuit->setEnabled(true);
+    m_ui->actionConfigure->setEnabled(true);
+
+    connect(m_ui->actionConnect, &QAction::triggered, this, &MainWindow::connectDevice);
+    connect(m_ui->actionDisconnect, &QAction::triggered, this, &MainWindow::disconnectDevice);
+    connect(m_ui->actionQuit, SIGNAL(triggered()), this, SLOT(close()));
+    connect(m_ui->actionConfigure, &QAction::triggered, m_settings, &SettingsDialog::show);
+    connect(m_ui->actionAboutQt, &QAction::triggered, qApp, &QApplication::aboutQt);
 }
 
 void MainWindow::receiveError(QCanBusDevice::CanBusError error) const
@@ -107,18 +104,71 @@ void MainWindow::receiveError(QCanBusDevice::CanBusError error) const
     case QCanBusDevice::ConnectionError:
     case QCanBusDevice::ConfigurationError:
     case QCanBusDevice::UnknownError:
-        qWarning() << canDevice->errorString();
+        qWarning() << m_canDevice->errorString();
     default:
         break;
     }
 }
 
+void MainWindow::connectDevice()
+{
+    const SettingsDialog::Settings p = m_settings->settings();
+
+    m_canDevice = QCanBus::instance()->createDevice(p.backendName.toLocal8Bit(), p.deviceInterfaceName);
+    if (!m_canDevice) {
+        showStatusMessage(tr("Connection error"));
+        return;
+    }
+
+    connect(m_canDevice, &QCanBusDevice::errorOccurred, this, &MainWindow::receiveError);
+    connect(m_canDevice, &QCanBusDevice::frameReceived, this, &MainWindow::checkMessages);
+
+    if (p.useConfigurationEnabled) {
+        foreach (const SettingsDialog::ConfigurationItem &item, p.configurations)
+            m_canDevice->setConfigurationParameter(item.first, item.second);
+    }
+
+    if (!m_canDevice->connectDevice()) {
+        delete m_canDevice;
+        m_canDevice = Q_NULLPTR;
+
+        showStatusMessage(tr("Connection error"));
+    } else {
+        m_ui->actionConnect->setEnabled(false);
+        m_ui->actionDisconnect->setEnabled(true);
+        m_ui->actionConfigure->setEnabled(false);
+
+        m_ui->sendMessagesBox->setEnabled(true);
+
+        showStatusMessage(tr("Backend: %1, Connected to: %2")
+                          .arg(p.backendName).arg(p.deviceInterfaceName));
+    }
+}
+
+void MainWindow::disconnectDevice()
+{
+    if (!m_canDevice)
+        return;
+
+    m_canDevice->disconnectDevice();
+    delete m_canDevice;
+    m_canDevice = Q_NULLPTR;
+
+    m_ui->actionConnect->setEnabled(true);
+    m_ui->actionDisconnect->setEnabled(false);
+    m_ui->actionConfigure->setEnabled(true);
+
+    m_ui->sendMessagesBox->setEnabled(false);
+
+    showStatusMessage(tr("Disconnected"));
+}
+
 void MainWindow::checkMessages()
 {
-    if (canDevice.isNull())
+    if (!m_canDevice)
         return;
 
-    const QCanBusFrame frame = canDevice->readFrame();
+    const QCanBusFrame frame = m_canDevice->readFrame();
 
     if (frame.payload().isEmpty())
         return;
@@ -140,68 +190,52 @@ void MainWindow::checkMessages()
     }
 
     if (frame.frameType() == QCanBusFrame::RemoteRequestFrame) {
-        ui->requestList->addItem(view);
+        m_ui->requestList->addItem(view);
     } else if (frame.frameType() == QCanBusFrame::ErrorFrame) {
-        ui->errorList->addItem(view);
+        m_ui->errorList->addItem(view);
     } else {
-        ui->listWidget->addItem(view);
+        m_ui->listWidget->addItem(view);
     }
 }
 
-void MainWindow::on_sendButton_clicked() const
+void MainWindow::sendMessage() const
 {
-    if (canDevice.isNull())
+    if (!m_canDevice)
         return;
 
-    QByteArray writings = ui->lineEdit->displayText().toUtf8();
-    ui->lineEdit->clear();
+    QByteArray writings = m_ui->lineEdit->displayText().toUtf8();
+    m_ui->lineEdit->clear();
 
     QCanBusFrame frame;
-    const int maxPayload = ui->fdBox->checkState() ? 64 : 8;
+    const int maxPayload = m_ui->fdBox->checkState() ? 64 : 8;
     int size = writings.size();
     if (size > maxPayload)
         size = maxPayload;
     writings = writings.left(size);
     frame.setPayload(writings);
 
-    qint32 id = ui->idEdit->displayText().toInt();
-    ui->idEdit->clear();
-    if (!ui->EFF->checkState() && id > 2047) //11 bits
+    qint32 id = m_ui->idEdit->displayText().toInt();
+    m_ui->idEdit->clear();
+    if (!m_ui->EFF->checkState() && id > 2047) //11 bits
         id = 2047;
 
     frame.setFrameId(id);
-    frame.setExtendedFrameFormat(ui->EFF->checkState());
+    frame.setExtendedFrameFormat(m_ui->EFF->checkState());
 
-    if (ui->remoteFrame->isChecked())
+    if (m_ui->remoteFrame->isChecked())
         frame.setFrameType(QCanBusFrame::RemoteRequestFrame);
-    else if (ui->errorFrame->isChecked())
+    else if (m_ui->errorFrame->isChecked())
         frame.setFrameType(QCanBusFrame::ErrorFrame);
     else
         frame.setFrameType(QCanBusFrame::DataFrame);
 
-    canDevice->writeFrame(frame);
-}
-
-void MainWindow::on_connectButton_clicked()
-{
-    canDevice.clear();
-    deviceName = ui->deviceEdit->text();
-    ui->deviceEdit->clear();
-    ui->deviceLabel->setText("Connected to:");
-    connectDevice(ui->pluginBox->currentIndex());
-}
-
-void MainWindow::on_pluginBox_activated(int index)
-{
-    canDevice.clear();
-    ui->deviceLabel->setText("Connected to:");
-    connectDevice(index);
+    m_canDevice->writeFrame(frame);
 }
 
 void MainWindow::interpretError(QString &view, const QCanBusFrame &frame)
 {
-    if (canDevice.isNull())
+    if (!m_canDevice)
         return;
 
-    view = canDevice->interpretErrorFrame(frame);
+    view = m_canDevice->interpretErrorFrame(frame);
 }
diff --git a/examples/serialbus/can/mainwindow.h b/examples/serialbus/can/mainwindow.h
index 876c679..fe7e63c 100644
--- a/examples/serialbus/can/mainwindow.h
+++ b/examples/serialbus/can/mainwindow.h
@@ -41,17 +41,17 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
-#include <QCanBusDevice>
+#include <QCanBusDevice> // for CanBusError
 
 #include <QMainWindow>
-#include <QPointer>
 
 QT_BEGIN_NAMESPACE
-class QSerialBusBackend;
-class QCanBus;
-class QSerialBusDevice;
+class QLabel;
+
 class QCanBusFrame;
 
+class SettingsDialog;
+
 namespace Ui {
 class MainWindow;
 }
@@ -68,23 +68,21 @@ public:
     ~MainWindow();
 
 private Q_SLOTS:
-
     void checkMessages();
-    void on_sendButton_clicked() const;
+    void sendMessage() const;
     void receiveError(QCanBusDevice::CanBusError) const;
-    void on_connectButton_clicked();
-    void on_pluginBox_activated(int index);
+    void connectDevice();
+    void disconnectDevice();
 
 private:
-    void init();
-    void connectDevice(int pluginIndex);
-    void interpretError(QString&, const QCanBusFrame&);
-
-    QPointer<QCanBusDevice> canDevice;
-    QString deviceName;
-    QList<QByteArray> plugins;
+    void showStatusMessage(const QString &message);
+    void initActionsConnections();
+    void interpretError(QString &, const QCanBusFrame &);
 
-    Ui::MainWindow *ui;
+    Ui::MainWindow *m_ui;
+    QLabel *m_status;
+    SettingsDialog *m_settings;
+    QCanBusDevice *m_canDevice;
 };
 
 #endif // MAINWINDOW_H
diff --git a/examples/serialbus/can/mainwindow.ui b/examples/serialbus/can/mainwindow.ui
index fe32841..19d8188 100644
--- a/examples/serialbus/can/mainwindow.ui
+++ b/examples/serialbus/can/mainwindow.ui
@@ -6,292 +6,174 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>1254</width>
-    <height>852</height>
+    <width>551</width>
+    <height>481</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>MainWindow</string>
   </property>
   <widget class="QWidget" name="centralWidget">
-   <widget class="QLineEdit" name="lineEdit">
-    <property name="geometry">
-     <rect>
-      <x>180</x>
-      <y>40</y>
-      <width>191</width>
-      <height>27</height>
-     </rect>
-    </property>
-   </widget>
-   <widget class="QPushButton" name="sendButton">
-    <property name="geometry">
-     <rect>
-      <x>190</x>
-      <y>130</y>
-      <width>191</width>
-      <height>61</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>send</string>
-    </property>
-   </widget>
-   <widget class="QListWidget" name="listWidget">
-    <property name="geometry">
-     <rect>
-      <x>20</x>
-      <y>250</y>
-      <width>391</width>
-      <height>541</height>
-     </rect>
-    </property>
-   </widget>
-   <widget class="QLineEdit" name="idEdit">
-    <property name="geometry">
-     <rect>
-      <x>40</x>
-      <y>40</y>
-      <width>113</width>
-      <height>27</height>
-     </rect>
-    </property>
-   </widget>
-   <widget class="QLabel" name="label">
-    <property name="geometry">
-     <rect>
-      <x>40</x>
-      <y>20</y>
-      <width>67</width>
-      <height>17</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Id</string>
-    </property>
-   </widget>
-   <widget class="QLabel" name="label_2">
-    <property name="geometry">
-     <rect>
-      <x>190</x>
-      <y>20</y>
-      <width>67</width>
-      <height>17</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Data</string>
-    </property>
-   </widget>
-   <widget class="QCheckBox" name="EFF">
-    <property name="geometry">
-     <rect>
-      <x>320</x>
-      <y>100</y>
-      <width>97</width>
-      <height>22</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>EFF</string>
-    </property>
-   </widget>
-   <widget class="QListWidget" name="requestList">
-    <property name="geometry">
-     <rect>
-      <x>420</x>
-      <y>250</y>
-      <width>411</width>
-      <height>541</height>
-     </rect>
-    </property>
-   </widget>
-   <widget class="QListWidget" name="errorList">
-    <property name="geometry">
-     <rect>
-      <x>840</x>
-      <y>250</y>
-      <width>401</width>
-      <height>541</height>
-     </rect>
-    </property>
-   </widget>
-   <widget class="QLabel" name="label_4">
-    <property name="geometry">
-     <rect>
-      <x>20</x>
-      <y>230</y>
-      <width>67</width>
-      <height>17</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Messages</string>
-    </property>
-   </widget>
-   <widget class="QLabel" name="label_5">
-    <property name="geometry">
-     <rect>
-      <x>430</x>
-      <y>227</y>
-      <width>67</width>
-      <height>20</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Requests</string>
-    </property>
-   </widget>
-   <widget class="QLabel" name="label_6">
-    <property name="geometry">
-     <rect>
-      <x>860</x>
-      <y>230</y>
-      <width>67</width>
-      <height>17</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Errors</string>
-    </property>
-   </widget>
-   <widget class="QCheckBox" name="fdBox">
-    <property name="geometry">
-     <rect>
-      <x>190</x>
-      <y>100</y>
-      <width>161</width>
-      <height>22</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Flexible Data-Rate</string>
-    </property>
-   </widget>
-   <widget class="QPushButton" name="connectButton">
-    <property name="geometry">
-     <rect>
-      <x>530</x>
-      <y>130</y>
-      <width>131</width>
-      <height>61</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Connect</string>
-    </property>
-   </widget>
-   <widget class="QLineEdit" name="deviceEdit">
-    <property name="geometry">
-     <rect>
-      <x>530</x>
-      <y>40</y>
-      <width>231</width>
-      <height>27</height>
-     </rect>
-    </property>
-   </widget>
-   <widget class="QLabel" name="label_3">
-    <property name="geometry">
-     <rect>
-      <x>530</x>
-      <y>20</y>
-      <width>67</width>
-      <height>17</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Device</string>
-    </property>
-   </widget>
-   <widget class="QLabel" name="deviceLabel">
-    <property name="geometry">
-     <rect>
-      <x>530</x>
-      <y>70</y>
-      <width>441</width>
-      <height>17</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Connected to:</string>
-    </property>
-   </widget>
-   <widget class="QComboBox" name="pluginBox">
-    <property name="geometry">
-     <rect>
-      <x>960</x>
-      <y>40</y>
-      <width>241</width>
-      <height>27</height>
-     </rect>
-    </property>
-   </widget>
-   <widget class="QLabel" name="label_7">
-    <property name="geometry">
-     <rect>
-      <x>960</x>
-      <y>20</y>
-      <width>67</width>
-      <height>17</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>Plugin</string>
-    </property>
-   </widget>
-   <widget class="QGroupBox" name="groupBox">
-    <property name="geometry">
-     <rect>
-      <x>40</x>
-      <y>80</y>
-      <width>141</width>
-      <height>111</height>
-     </rect>
-    </property>
-    <property name="title">
-     <string>Frame Type</string>
-    </property>
-    <property name="checkable">
-     <bool>false</bool>
-    </property>
-    <layout class="QVBoxLayout" name="verticalLayout">
-     <item>
-      <widget class="QRadioButton" name="dataFrame">
-       <property name="text">
-        <string>Data</string>
-       </property>
-       <property name="checked">
-        <bool>true</bool>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QRadioButton" name="remoteFrame">
-       <property name="text">
-        <string>Remote Request</string>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QRadioButton" name="errorFrame">
-       <property name="text">
-        <string>Error</string>
-       </property>
-      </widget>
-     </item>
-    </layout>
-   </widget>
+   <layout class="QGridLayout" name="gridLayout_3">
+    <item row="0" column="0">
+     <widget class="QGroupBox" name="sendMessagesBox">
+      <property name="title">
+       <string>Send CAN message</string>
+      </property>
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <item>
+        <layout class="QGridLayout" name="gridLayout">
+         <item row="0" column="0">
+          <widget class="QLabel" name="label">
+           <property name="text">
+            <string>Id</string>
+           </property>
+          </widget>
+         </item>
+         <item row="0" column="1">
+          <widget class="QLineEdit" name="idEdit"/>
+         </item>
+         <item row="0" column="2" rowspan="3">
+          <widget class="QGroupBox" name="groupBox">
+           <property name="title">
+            <string>Frame Type</string>
+           </property>
+           <property name="checkable">
+            <bool>false</bool>
+           </property>
+           <layout class="QVBoxLayout" name="verticalLayout">
+            <item>
+             <widget class="QRadioButton" name="dataFrame">
+              <property name="text">
+               <string>Data</string>
+              </property>
+              <property name="checked">
+               <bool>true</bool>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QRadioButton" name="remoteFrame">
+              <property name="text">
+               <string>Re&amp;mote Request</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QRadioButton" name="errorFrame">
+              <property name="text">
+               <string>Error</string>
+              </property>
+             </widget>
+            </item>
+           </layout>
+          </widget>
+         </item>
+         <item row="0" column="3">
+          <widget class="QCheckBox" name="fdBox">
+           <property name="text">
+            <string>Flexible Data-Rate</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="3">
+          <widget class="QCheckBox" name="EFF">
+           <property name="text">
+            <string>EFF</string>
+           </property>
+          </widget>
+         </item>
+         <item row="2" column="3">
+          <widget class="QPushButton" name="sendButton">
+           <property name="text">
+            <string>send</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="1">
+          <widget class="QLineEdit" name="lineEdit"/>
+         </item>
+         <item row="1" column="0">
+          <widget class="QLabel" name="label_2">
+           <property name="text">
+            <string>Data</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </widget>
+    </item>
+    <item row="1" column="0">
+     <layout class="QGridLayout" name="gridLayout_2">
+      <item row="0" column="0">
+       <widget class="QLabel" name="label_4">
+        <property name="text">
+         <string>Messages</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="QLabel" name="label_5">
+        <property name="text">
+         <string>Requests</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="2">
+       <widget class="QLabel" name="label_6">
+        <property name="text">
+         <string>Errors</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0">
+       <widget class="QListWidget" name="listWidget"/>
+      </item>
+      <item row="1" column="1">
+       <widget class="QListWidget" name="requestList"/>
+      </item>
+      <item row="1" column="2">
+       <widget class="QListWidget" name="errorList"/>
+      </item>
+     </layout>
+    </item>
+   </layout>
   </widget>
   <widget class="QMenuBar" name="menuBar">
    <property name="geometry">
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>1254</width>
-     <height>20</height>
+     <width>551</width>
+     <height>23</height>
     </rect>
    </property>
+   <widget class="QMenu" name="menuCalls">
+    <property name="title">
+     <string>&amp;Calls</string>
+    </property>
+    <addaction name="actionConnect"/>
+    <addaction name="actionDisconnect"/>
+    <addaction name="separator"/>
+    <addaction name="actionQuit"/>
+   </widget>
+   <widget class="QMenu" name="menuTools">
+    <property name="title">
+     <string>Too&amp;ls</string>
+    </property>
+    <addaction name="actionConfigure"/>
+   </widget>
+   <widget class="QMenu" name="menuHelp">
+    <property name="title">
+     <string>Help</string>
+    </property>
+    <addaction name="actionAboutQt"/>
+   </widget>
+   <addaction name="menuCalls"/>
+   <addaction name="menuTools"/>
+   <addaction name="menuHelp"/>
   </widget>
   <widget class="QToolBar" name="mainToolBar">
    <attribute name="toolBarArea">
@@ -300,10 +182,56 @@
    <attribute name="toolBarBreak">
     <bool>false</bool>
    </attribute>
+   <addaction name="actionConnect"/>
+   <addaction name="actionDisconnect"/>
+   <addaction name="actionConfigure"/>
   </widget>
   <widget class="QStatusBar" name="statusBar"/>
+  <action name="actionConnect">
+   <property name="icon">
+    <iconset resource="can.qrc">
+     <normaloff>:/images/connect.png</normaloff>:/images/connect.png</iconset>
+   </property>
+   <property name="text">
+    <string>&amp;Connect</string>
+   </property>
+  </action>
+  <action name="actionDisconnect">
+   <property name="icon">
+    <iconset resource="can.qrc">
+     <normaloff>:/images/disconnect.png</normaloff>:/images/disconnect.png</iconset>
+   </property>
+   <property name="text">
+    <string>&amp;Disconnect</string>
+   </property>
+  </action>
+  <action name="actionQuit">
+   <property name="icon">
+    <iconset resource="can.qrc">
+     <normaloff>:/images/application-exit.png</normaloff>:/images/application-exit.png</iconset>
+   </property>
+   <property name="text">
+    <string>&amp;Quit</string>
+   </property>
+  </action>
+  <action name="actionConfigure">
+   <property name="icon">
+    <iconset resource="can.qrc">
+     <normaloff>:/images/settings.png</normaloff>:/images/settings.png</iconset>
+   </property>
+   <property name="text">
+    <string>&amp;Configure</string>
+   </property>
+  </action>
+  <action name="actionAboutQt">
+   <property name="text">
+    <string>&amp;About Qt</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <resources/>
+ <resources>
+  <include location="can.qrc"/>
+ </resources>
  <connections/>
 </ui>
diff --git a/examples/serialbus/can/settingsdialog.cpp b/examples/serialbus/can/settingsdialog.cpp
new file mode 100644
index 0000000..f082689
--- /dev/null
+++ b/examples/serialbus/can/settingsdialog.cpp
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtSerialBus module.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "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
+** "AS IS" 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "settingsdialog.h"
+#include "ui_settingsdialog.h"
+
+#include <QCanBus>
+
+QT_USE_NAMESPACE
+
+SettingsDialog::SettingsDialog(QWidget *parent) :
+    QDialog(parent),
+    m_ui(new Ui::SettingsDialog)
+{
+    m_ui->setupUi(this);
+
+    connect(m_ui->applyButton, &QPushButton::clicked, this, &SettingsDialog::apply);
+    connect(m_ui->useConfigurationBox, &QCheckBox::clicked, m_ui->configurationBox, &QGroupBox::setEnabled);
+
+    fillBackends();
+
+    updateSettings();
+}
+
+SettingsDialog::~SettingsDialog()
+{
+    delete m_ui;
+}
+
+SettingsDialog::Settings SettingsDialog::settings() const
+{
+    return m_currentSettings;
+}
+
+void SettingsDialog::apply()
+{
+    updateSettings();
+    hide();
+}
+
+void SettingsDialog::updateSettings()
+{
+    m_currentSettings.backendName = m_ui->backendListBox->currentText();
+    m_currentSettings.deviceInterfaceName = m_ui->interfaceNameEdit->text();
+    m_currentSettings.useConfigurationEnabled = m_ui->useConfigurationBox->isChecked();
+
+    if (m_currentSettings.useConfigurationEnabled) {
+        // FIXME: update configuration
+    }
+}
+
+void SettingsDialog::fillBackends()
+{
+    foreach (const QByteArray &backend, QCanBus::instance()->plugins())
+        m_ui->backendListBox->addItem(backend);
+}
diff --git a/examples/serialbus/can/settingsdialog.h b/examples/serialbus/can/settingsdialog.h
new file mode 100644
index 0000000..0b62b3a
--- /dev/null
+++ b/examples/serialbus/can/settingsdialog.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtSerialBus module.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "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
+** "AS IS" 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SETTINGSDIALOG_H
+#define SETTINGSDIALOG_H
+
+#include <QCanBusDevice>
+
+#include <QDialog>
+
+QT_BEGIN_NAMESPACE
+
+namespace Ui {
+class SettingsDialog;
+}
+
+QT_END_NAMESPACE
+
+QT_USE_NAMESPACE
+
+class SettingsDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    typedef QPair<QCanBusDevice::ConfigurationKey, QVariant> ConfigurationItem;
+
+    struct Settings {
+        QString backendName;
+        QString deviceInterfaceName;
+        QList<ConfigurationItem> configurations;
+        bool useConfigurationEnabled;
+    };
+
+    explicit SettingsDialog(QWidget *parent = 0);
+    ~SettingsDialog();
+
+    Settings settings() const;
+
+private slots:
+    void apply();
+
+private:
+    void updateSettings();
+    void fillBackends();
+
+private:
+    Ui::SettingsDialog *m_ui;
+    Settings m_currentSettings;
+};
+
+#endif // SETTINGSDIALOG_H
diff --git a/examples/serialbus/can/settingsdialog.ui b/examples/serialbus/can/settingsdialog.ui
new file mode 100644
index 0000000..deebda0
--- /dev/null
+++ b/examples/serialbus/can/settingsdialog.ui
@@ -0,0 +1,145 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>SettingsDialog</class>
+ <widget class="QDialog" name="SettingsDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>406</width>
+    <height>246</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Settings</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout_4">
+   <item row="0" column="0">
+    <widget class="QGroupBox" name="selectBackendBox">
+     <property name="title">
+      <string>Select CAN backend</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout">
+      <item row="0" column="0">
+       <widget class="QComboBox" name="backendListBox"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="0" column="1" rowspan="3">
+    <widget class="QGroupBox" name="configurationBox">
+     <property name="enabled">
+      <bool>false</bool>
+     </property>
+     <property name="title">
+      <string>Specify Configuration</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout_2">
+      <item row="0" column="0">
+       <widget class="QLabel" name="rawFilterLabel">
+        <property name="text">
+         <string>RAW Filter</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="QLineEdit" name="rawFilterEdit"/>
+      </item>
+      <item row="1" column="0">
+       <widget class="QLabel" name="errorFilterLabel">
+        <property name="text">
+         <string>Error Filter</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="1">
+       <widget class="QLineEdit" name="errorFilterEdit"/>
+      </item>
+      <item row="2" column="0">
+       <widget class="QLabel" name="loopbackLabel">
+        <property name="text">
+         <string>Loopback</string>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="QLineEdit" name="lopbackEdit"/>
+      </item>
+      <item row="3" column="0">
+       <widget class="QLabel" name="receiveOwnLabel">
+        <property name="text">
+         <string>Receive Own</string>
+        </property>
+       </widget>
+      </item>
+      <item row="3" column="1">
+       <widget class="QLineEdit" name="receiveOwnEdit"/>
+      </item>
+      <item row="4" column="0">
+       <widget class="QLabel" name="speedLabel">
+        <property name="enabled">
+         <bool>false</bool>
+        </property>
+        <property name="text">
+         <string>Speed</string>
+        </property>
+       </widget>
+      </item>
+      <item row="4" column="1">
+       <widget class="QLineEdit" name="speedEdit">
+        <property name="enabled">
+         <bool>false</bool>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QGroupBox" name="specifyInterfaceNameBox">
+     <property name="title">
+      <string>Specify CAN interface name</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout_3">
+      <item row="0" column="0">
+       <widget class="QLineEdit" name="interfaceNameEdit"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="2" column="0">
+    <widget class="QCheckBox" name="useConfigurationBox">
+     <property name="text">
+      <string>Use configuration</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0" colspan="2">
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <spacer name="horizontalSpacer">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>96</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="applyButton">
+       <property name="text">
+        <string>Apply</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>