Add plumbing enabling use of GnssShareNmeaSource

satellite/application.py

@@ -22,6 +22,7 @@ from .nmeasource import (
     ModemError,
     NmeaSourceNotFoundError,
     QuectelNmeaSource,
+    GnssShareNmeaSource,
 )
 from .util import now, unique_filename, bearing_to_arrow
 from .widgets import text_barchart, DataFrame
@@ -222,7 +223,25 @@ class SatelliteApp(Gtk.Application):
         return False  # Remove from idle_add
 
     def init_gnss_share_source(self):
-        return False
+        try:
+            self.source = GnssShareNmeaSource()
+            self.source.initialize()
+        except Exception as e:
+            fatal = False
+            dtext = 'Can you access "/var/run/gnss-share.sock"?'
+            dialog = Gtk.MessageDialog(
+                parent=self.window, modal=True,
+                message_type=Gtk.MessageType.ERROR,
+                buttons=Gtk.ButtonsType.OK, text=dtext)
+            dialog.set_title("Error initializing NMEA source")
+            dialog.run()
+            dialog.destroy()
+            if fatal:
+                self.quit()
+
+            return False
+
+        return True
 
     def init_quectel_source(self):
         try: