Added command history

src/ui/DebugConsole.cc

@@ -58,6 +58,7 @@ DebugConsole::DebugConsole(QWidget *parent) :
         lowpassDataRate(0.0f),
         dataRateThreshold(500),
         autoHold(true),
+        commandIndex(0),
         m_ui(new Ui::DebugConsole)
 {
     // Setup basic user interface
@@ -471,6 +472,12 @@ void DebugConsole::appendSpecialSymbol()
 
 void DebugConsole::sendBytes()
 {
+    // Store command history
+    commandHistory.append(m_ui->sendText->text());
+    // Since text was just sent, we're at position commandHistory.length()
+    // which is the current text
+    commandIndex = commandHistory.length();
+
     if (!m_ui->sentText->isVisible())
     {
         m_ui->sentText->setVisible(true);
@@ -678,18 +685,12 @@ void DebugConsole::keyPressEvent(QKeyEvent * event)
 {
     if (event->key() == Qt::Key_Up)
     {
-        qDebug() << "UP KEY PRESSED";
         cycleCommandHistory(true);
     }
     else if (event->key() == Qt::Key_Down)
     {
-        qDebug() << "DOWN KEY PRESSED";
         cycleCommandHistory(false);
     }
-    else if (event->key() == Qt::Key_Enter)
-    {
-        this->sendBytes();
-    }
     else
     {
         QWidget::keyPressEvent(event);
@@ -698,8 +699,11 @@ void DebugConsole::keyPressEvent(QKeyEvent * event)
 
 void DebugConsole::cycleCommandHistory(bool up)
 {
+    // Only cycle if there is a history
+    if (commandHistory.length() > 0)
+    {
         // Store current command if we're not in history yet
-    if (commandIndex == commandHistory.length())
+        if (commandIndex == commandHistory.length() && up)
         {
             currCommand = m_ui->sendText->text();
         }
@@ -727,12 +731,23 @@ void DebugConsole::cycleCommandHistory(bool up)
 
         }
 
+        // Restore current command if we went out of history
+        if (commandIndex == commandHistory.length())
+        {
+            m_ui->sendText->setText(currCommand);
+        }
+
         // If we are too far down or too far up, wrap around to current command
         if (commandIndex < 0 || commandIndex > commandHistory.length())
         {
             commandIndex = commandHistory.length();
             m_ui->sendText->setText(currCommand);
         }
+
+        // Bound the index
+        if (commandIndex < 0) commandIndex = 0;
+        if (commandIndex > commandHistory.length()) commandIndex = commandHistory.length();
+    }
 }
 
 void DebugConsole::changeEvent(QEvent *e)