Add menu entry for creating GPS location

And disable it if there is no satellite based location service (but see
the comment in the previous commit - this doesn't appear to work
reliably).

Nothing happens when you use the menu entry. This just allows us to hook
this up later.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

desktop-widgets/mainwindow.cpp

@@ -206,6 +206,9 @@ MainWindow::MainWindow() : QMainWindow(),
 #endif
 
 	GpsLocation *locationProvider = new GpsLocation(&report_message, this);
+	if (!locationProvider->hasLocationsSource()) {
+		ui.menuFile->removeAction(ui.add_GPS_location_here);
+	}
 	ui.mainErrorMessage->hide();
 	graphics()->setEmptyState();
 	initialUiSetup();

desktop-widgets/mainwindow.ui

@@ -92,6 +92,8 @@
     <addaction name="copy"/>
     <addaction name="paste"/>
     <addaction name="separator"/>
+    <addaction name="add_GPS_location_here"/>
+    <addaction name="separator"/>
     <addaction name="actionRenumber"/>
     <addaction name="actionAutoGroup"/>
     <addaction name="separator"/>
@@ -738,6 +740,11 @@
     <string>Facebook</string>
    </property>
   </action>
+  <action name="add_GPS_location_here">
+   <property name="text">
+    <string>Add GPS location here</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>