def buddy_left_cb(self, activity, buddy):
     """ Called when a buddy leaves the activity """
     if self.__is_initiating is True:
         utils.run_dialog("Instructor", buddy.props.nick + " has left!")
 def buddy_left_cb(self, activity, buddy):
     """ Called when a buddy leaves the activity """
     if self.__sharing is True:
         utils.run_dialog("Instructor", buddy.props.nick + " has left!")
 def buddy_joined_cb(self, activity, buddy):
     """ Called when a buddy joins the activity """
     if self.__is_initiating is True:
         utils.run_dialog("Instructor", buddy.props.nick + " has joined!")
 def buddy_joined_cb(self, activity, buddy):
     """ Called when a buddy joins the activity """
     if self.__sharing is True:
         utils.run_dialog("Instructor", buddy.props.nick + " has joined!")