Launcher: only submit a FP when requested

Add an explicit toggle switch to the planning page so we don’t
always set an empty plan.

src/GUI/FlightPlanController.cxx

@@ -204,6 +204,9 @@ void FlightPlanController::clearPlan()
     _fp->addDelegate(_delegate.get());
     _legs->setFlightPlan(fp);
     emit infoChanged();
+
+    _enabled = false;
+    emit enabledChanged(_enabled);
 }
 
 bool FlightPlanController::loadFromPath(QString path)
@@ -220,6 +223,9 @@ bool FlightPlanController::loadFromPath(QString path)
     _fp->addDelegate(_delegate.get());
     _legs->setFlightPlan(fp);
 
+    _enabled = true;
+    emit enabledChanged(_enabled);
+
     // notify that everything changed
     emit infoChanged();
     return true;
@@ -233,6 +239,9 @@ bool FlightPlanController::saveToPath(QString path) const
 
 void FlightPlanController::onCollectConfig()
 {
+    if (!_enabled)
+        return;
+
     SGPath p = globals->get_fg_home() / "launcher.fgfp";
     _fp->save(p);
     
@@ -248,6 +257,9 @@ void FlightPlanController::onSave()
 
 void FlightPlanController::onRestore()
 {
+    _enabled = _config->getValueForKey("", "fp-enabled", false).toBool();
+    emit enabledChanged(_enabled);
+
     std::string planXML = _config->getValueForKey("", "fp", QString()).toString().toStdString();
     if (!planXML.empty()) {
         std::istringstream ss(planXML);

src/GUI/FlightPlanController.hxx

@@ -18,6 +18,8 @@ class FlightPlanController : public QObject
 {
     Q_OBJECT
 
+    Q_PROPERTY(bool enabled MEMBER _enabled NOTIFY enabledChanged)
+
     Q_PROPERTY(QString callsign READ callsign WRITE setCallsign NOTIFY infoChanged)
     Q_PROPERTY(QString remarks READ remarks WRITE setRemarks NOTIFY infoChanged)
     Q_PROPERTY(QString aircraftType READ aircraftType WRITE setAircraftType NOTIFY infoChanged)
@@ -110,6 +112,8 @@ signals:
     void infoChanged();
     void waypointsChanged();
     
+    void enabledChanged(bool enabled);
+
 public slots:
 
     void setFlightType(FlightType ty);
@@ -143,6 +147,7 @@ private:
     LegsModel* _legs = nullptr;
     std::unique_ptr<FPDelegate> _delegate;
     LaunchConfig* _config = nullptr;
+    bool _enabled = false;
 };
 
 #endif // FLIGHTPLANCONTROLLER_HXX

src/GUI/qml/FlightPlan.qml

@@ -36,9 +36,19 @@ Item {
             Row {
                 width: parent.width
                 spacing: Style.margin
-                height: childrenRect.height
+                height: loadButton.height
+
+                ToggleSwitch {
+                    label: qsTr("Fly with a flight-plan")
+                    checked: _launcher.flightPlan.enabled
+                    function toggle(newChecked) {
+                        _launcher.flightPlan.enabled = newChecked
+                    }
+                    anchors.verticalCenter: parent.verticalCenter
+                }
 
                 Button {
+                    id: loadButton
                     text: qsTr("Load");
                     onClicked: {
                         var ok = _launcher.flightPlan.loadPlan();