SerialTerminal: Save and restore selected port name

+ Populate serial ports on startup.

Change-Id: Ie7216bb09ba1ffbb0036019cb4974a14119fc55f
Reviewed-by: Benjamin Balga <balga.benjamin@gmail.com>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/serialterminal/serialdevicemodel.cpp

@@ -79,6 +79,13 @@ void SerialDeviceModel::enablePort(const QString &portName)
     m_disabledPorts.remove(portName);
 }
 
+int SerialDeviceModel::indexForPort(const QString &portName) const
+{
+    return Utils::indexOf(m_ports, [portName](const QSerialPortInfo &port) {
+        return port.portName() == portName;
+    });
+}
+
 void SerialDeviceModel::update()
 {
     // Called from the combobox before popup, thus updated only when needed and immediately

src/plugins/serialterminal/serialdevicemodel.h

@@ -46,6 +46,7 @@ public:
 
     void disablePort(const QString &portName);
     void enablePort(const QString &portName);
+    int indexForPort(const QString &portName) const;
 
     void update();
 

src/plugins/serialterminal/serialoutputpane.cpp

@@ -381,7 +381,8 @@ void SerialOutputPane::createToolButtons()
     m_portsSelection = new ComboBox;
     m_portsSelection->setSizeAdjustPolicy(QComboBox::AdjustToContents);
     m_portsSelection->setModel(m_devicesModel);
-    connect(m_portsSelection, &ComboBox::opened, m_devicesModel, &SerialDeviceModel::update);
+    updatePortsList();
+    connect(m_portsSelection, &ComboBox::opened, this, &SerialOutputPane::updatePortsList);
     connect(m_portsSelection, static_cast<void (ComboBox::*)(int)>(&ComboBox::currentIndexChanged),
             this, &SerialOutputPane::activePortNameChanged);
     // TODO: the ports are not updated with the box opened (if the user wait for it) -> add a timer?
@@ -409,6 +410,12 @@ void SerialOutputPane::updateLineEndingsComboBox()
     m_lineEndingsSelection->setCurrentIndex(m_settings.defaultLineEndingIndex);
 }
 
+void SerialOutputPane::updatePortsList()
+{
+    m_devicesModel->update();
+    m_portsSelection->setCurrentIndex(m_devicesModel->indexForPort(m_settings.portName));
+}
+
 int SerialOutputPane::indexOf(const SerialControl *rc) const
 {
     return Utils::indexOf(m_serialControlTabs, [rc](const SerialControlTab &tab) {
@@ -618,6 +625,8 @@ void SerialOutputPane::activePortNameChanged(int index)
 
     // Update current port name
     m_currentPortName = pn;
+    m_settings.setPortName(pn);
+    emit settingsChanged(m_settings);
 }
 
 void SerialOutputPane::activeBaudRateChanged(int index)

src/plugins/serialterminal/serialoutputpane.h

@@ -114,6 +114,7 @@ private:
 
     void createToolButtons();
     void updateLineEndingsComboBox();
+    void updatePortsList();
 
     void contextMenuRequested(const QPoint &pos, int index);
 

src/plugins/serialterminal/serialterminalsettings.cpp

@@ -120,6 +120,12 @@ void Settings::setBaudRate(qint32 br)
     edited = true;
 }
 
+void Settings::setPortName(const QString &name)
+{
+    portName = name;
+    edited = true;
+}
+
 QByteArray Settings::defaultLineEnding() const
 {
     return defaultLineEndingIndex >= (unsigned int)lineEndings.size()

src/plugins/serialterminal/serialterminalsettings.h

@@ -62,6 +62,7 @@ public:
     void load(QSettings *settings);
 
     void setBaudRate(qint32 br);
+    void setPortName(const QString &name);
 
     QByteArray defaultLineEnding() const;
     QString defaultLineEndingText() const;