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import logging
from sugar.chat.GroupChat import GroupChat
class ActivityChat(GroupChat):
SERVICE_TYPE = "_olpc_activity_chat._udp"
def __init__(self, activity):
GroupChat.__init__(self)
self._chat_service = None
self._activity = activity
self._pservice.connect('ServiceAppeared', self._service_appeared_cb)
# Find an existing activity chat to latch onto
#activity_ps = self._pservice.getActivity(activity.get_id())
#service = activity.getServiceOfType(ActivityChat.SERVICE_TYPE)
#if service is not None:
# self._service_appeared_cb(self._pservice, None, service)
def _service_appeared_cb(self, pservice, buddy, service):
if service.get_activity_id() != self._activity.get_id():
return
if service.get_type() != ActivityChat.SERVICE_TYPE:
return
if self._chat_service:
return
logging.debug('Activity chat service appeared, setup the stream.')
# Ok, there's an existing chat service that we copy
# parameters and such from
addr = service.get_address()
port = service.get_port()
self._chat_service = self._pservice.share_activity(self._activity,
stype=ActivityChat.SERVICE_TYPE, properties=None,
address=addr, port=port)
self._setup_stream(self._chat_service)
def publish(self):
"""Only called when we publish the activity this chat is tied to."""
self._chat_service = self._pservice.share_activity(self._activity,
stype=ActivityChat.SERVICE_TYPE)
self._setup_stream(self._chat_service)
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