Allow to select COM frequencies from ATC view (context menu)

* added functions in component to select COM frequencies
* changed views to contain ObjectType in template
* function to obtain selected objects in view base class

src/blackgui/components/atcstationcomponent.h

@@ -15,9 +15,7 @@
 #include "blackgui/components/enableforruntime.h"
 #include "blackgui/components/enablefordockwidgetinfoarea.h"
 #include "blackgui/components/updatetimer.h"
-
 #include "blackmisc/avatcstation.h"
-
 #include <QTabWidget>
 #include <QModelIndex>
 #include <QScopedPointer>
@@ -111,6 +109,9 @@ namespace BlackGui
             //! Count has been changed
             void ps_countChanged(int count);
 
+            //! Set COM frequency
+            void ps_setComFrequency(const BlackMisc::PhysicalQuantities::CFrequency &frequency, BlackMisc::Aviation::CComSystem::ComUnit unit);
+
         private:
             QScopedPointer<Ui::CAtcStationComponent> ui;
             CUpdateTimer *m_updateTimer = nullptr;
@@ -118,7 +119,16 @@ namespace BlackGui
             QDateTime m_timestampOnlineStationsChanged  = CUpdateTimer::epoch();  //!< stations marked as changed
             QDateTime m_timestampLastReadBookedStations = CUpdateTimer::epoch();  //!< stations read
             QDateTime m_timestampBookedStationsChanged  = CUpdateTimer::epoch();  //!< stations marked as changed
+
+            const QString &originator()
+            {
+                // string is generated once, the timestamp allows to use multiple
+                // components (as long as they are not generated at the same ms)
+                static const QString o = QString("ATCSTATIOCOMPONENT:").append(QString::number(QDateTime::currentMSecsSinceEpoch()));
+                return o;
+            }
+
         };
-    }
-}
+    } // namespace
+} // namespace
 #endif // guard