Easter egg confirmation

src/api/QGCCorePlugin.h

@@ -39,6 +39,7 @@ public:
 
     Q_PROPERTY(bool         showTouchAreas      READ showTouchAreas     WRITE setShowTouchAreas    NOTIFY showTouchAreasChanged)
     Q_PROPERTY(bool         showAdvancedUI      READ showAdvancedUI     WRITE setShowAdvancedUI    NOTIFY showAdvancedUIChanged)
+    Q_PROPERTY(QString                  showAdvancedUIMessage           READ showAdvancedUIMessage          CONSTANT)
 
     Q_PROPERTY(QString      brandImageIndoor    READ brandImageIndoor   CONSTANT)
     Q_PROPERTY(QString      brandImageOutdoor   READ brandImageOutdoor  CONSTANT)
@@ -71,6 +72,10 @@ public:
     /// Return the resource file which contains the brand image for for Outdoor theme.
     virtual QString brandImageOutdoor(void) const { return QString(); }
 
+    /// @return The message to show to the user when they a re prompted to confirm turning on advanced ui.
+    virtual QString showAdvancedUIMessage(void) const { return tr("WARNING: You are about to enter Advanced Mode. This may expose features which may cause your vehicle to malfunction. "
+                                                                  "You should do so only if instructed by customer support. Are you sure you want to enable Advanced Mode?"); }
+
     bool showTouchAreas(void) const { return _showTouchAreas; }
     bool showAdvancedUI(void) const { return _showAdvancedUI; }
     void setShowTouchAreas(bool show);

src/ui/toolbar/MainToolBarIndicators.qml

@@ -7,10 +7,10 @@
  *
  ****************************************************************************/
 
-
 import QtQuick          2.3
 import QtQuick.Controls 1.2
 import QtQuick.Layouts  1.2
+import QtQuick.Dialogs  1.2
 
 import QGroundControl                       1.0
 import QGroundControl.Controls              1.0
@@ -19,20 +19,19 @@ import QGroundControl.ScreenTools           1.0
 import QGroundControl.Palette               1.0
 
 Item {
-    property var  _activeVehicle:        QGroundControl.multiVehicleManager.activeVehicle
-    property bool _communicationLost:    _activeVehicle ? _activeVehicle.connectionLost : false
+    property var  _activeVehicle:       QGroundControl.multiVehicleManager.activeVehicle
+    property bool _communicationLost:   _activeVehicle ? _activeVehicle.connectionLost : false
 
     QGCPalette { id: qgcPal }
 
-
     // Easter egg mechanism
     MouseArea {
         anchors.fill: parent
         onClicked: {
-            console.log("easter egg click", ++_clickCount)
+            _clickCount++
             eggTimer.restart()
-            if (_clickCount == 5) {
-                QGroundControl.corePlugin.showAdvancedUI = true
+            if (_clickCount == 5 && !QGroundControl.corePlugin.showAdvancedUI) {
+                advancedModeConfirmation.visible = true
             } else if (_clickCount == 7) {
                 QGroundControl.corePlugin.showTouchAreas = true
             }
@@ -45,6 +44,18 @@ Item {
             interval:       1000
             onTriggered:    parent._clickCount = 0
         }
+
+        MessageDialog {
+            id:                 advancedModeConfirmation
+            title:              qsTr("Advanced Mode")
+            text:               QGroundControl.corePlugin.showAdvancedUIMessage
+            standardButtons:    StandardButton.Yes | StandardButton.No
+
+            onYes: {
+                QGroundControl.corePlugin.showAdvancedUI = true
+                visible = false
+            }
+        }
     }
 
     QGCLabel {