Make joining asynchronous on the activity side

sugar/presence/activity.py

@@ -36,10 +36,12 @@ class Activity(gobject.GObject):
     __gsignals__ = {
         'buddy-joined': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                          ([gobject.TYPE_PYOBJECT])),
-        'buddy-left': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+        'buddy-left':   (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
                          ([gobject.TYPE_PYOBJECT])),
-        'new-channel': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
-                         ([gobject.TYPE_PYOBJECT]))
+        'new-channel':  (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+                         ([gobject.TYPE_PYOBJECT])),
+        'joined':       (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
+                         ([gobject.TYPE_PYOBJECT, gobject.TYPE_PYOBJECT]))
     }
 
     __gproperties__ = {
@@ -137,15 +139,22 @@ class Activity(gobject.GObject):
             buddies.append(self._ps_new_object(item))
         return buddies
 
+    def _join_cb(self):
+        self._joined = True
+        self.emit("joined", True, None)
+
+    def _join_error_cb(self, err):
+        self.emit("joined", False, str(err))
+
     def join(self):
         """Join this activity 
         
         XXX if these are all activities, can I join my own activity?
         """
         if self._joined:
+            self.emit("joined", True, None)
             return
-        self._activity.Join()
-        self._joined = True
+        self._activity.Join(reply_handler=self._join_cb, error_handler=self._join_error_cb)
 
     def get_channels(self):
         """Retrieve communications channel descriptions for the activity 
@@ -157,7 +166,6 @@ class Activity(gobject.GObject):
         (bus_name, connection, channels) = self._activity.GetChannels()
         return bus_name, connection, channels
 
-    def owner_has_joined(self):
-        """Retrieve whether the owner of the activity is active within it"""
+    def leave(self):
         # FIXME
-        return False
+        self._joined = False

sugar/presence/presenceservice.py

@@ -160,6 +160,11 @@ class PresenceService(gobject.GObject):
             elif object_path.startswith(self._PS_ACTIVITY_OP):
                 obj = activity.Activity(self._bus, self._new_object,
                         self._del_object, object_path)
+                try:
+                    # Pre-fill the activity's ID
+                    foo = obj.props.id
+                except dbus.exceptions.DBusException, err:
+                    pass
             else:
                 raise RuntimeError("Unknown object type")
             self._objcache[object_path] = obj
@@ -322,7 +327,9 @@ class PresenceService(gobject.GObject):
 
     def _share_activity_cb(self, activity, op):
         """Notify with GObject event of successful sharing of activity"""
-        self.emit("activity-shared", True, self._new_object(op), None)
+        psact = self._new_object(op)
+        psact._joined = True
+        self.emit("activity-shared", True, psact, None)
 
     def _share_activity_error_cb(self, activity, err):
         """Notify with GObject event of unsuccessful sharing of activity"""
@@ -343,6 +350,14 @@ class PresenceService(gobject.GObject):
         returns None
         """
         actid = activity.get_id()
+
+        # Ensure the activity is not already shared/joined
+        for obj in self._objcache.values():
+            if not isinstance(object, activity.Activity):
+                continue
+            if obj.props.id == actid or obj.props.joined:
+                raise RuntimeError("Activity %s is already shared." % actid)
+
         atype = activity.get_service_name()
         name = activity.props.title
         self._ps.ShareActivity(actid, atype, name, properties,