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import dbus, dbus.glib, dbus.dbus_bindings, gobject
import Buddy, Service, Activity
class ObjectCache(object):
def __init__(self):
self._cache = {}
def get(self, object_path):
try:
return self._cache[object_path]
except KeyError:
return None
def add(self, obj):
op = obj.object_path()
if not self._cache.has_key(op):
self._cache[op] = obj
def remove(self, object_path):
if self._cache.has_key(object_path):
del self._cache[object_path]
class PresenceService(gobject.GObject):
__gsignals__ = {
'BuddyAppeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'BuddyDisappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'ServiceAppeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'ServiceDisappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'ActivityAppeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'ActivityDisappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT]))
}
_PRESENCE_SERVICE = "org.laptop.Presence"
_PRESENCE_DBUS_INTERFACE = "org.laptop.Presence"
_PRESENCE_OBJECT_PATH = "/org/laptop/Presence"
_PS_BUDDY_OP = _PRESENCE_OBJECT_PATH + "/Buddies/"
_PS_SERVICE_OP = _PRESENCE_OBJECT_PATH + "/Services/"
_PS_ACTIVITY_OP = _PRESENCE_OBJECT_PATH + "/Activities/"
def __init__(self):
gobject.GObject.__init__(self)
self._obcache = ObjectCache()
self._bus = dbus.SessionBus()
self._ps = dbus.Interface(self._bus.get_object(self._PRESENCE_SERVICE,
self._PRESENCE_OBJECT_PATH), self._PRESENCE_DBUS_INTERFACE)
self._ps.connect_to_signal('BuddyAppeared', self._buddy_appeared_cb)
self._ps.connect_to_signal('BuddyDisappeared', self._buddy_disappeared_cb)
def _new_object(self, object_path):
obj = self._objcache.get(object_path)
if not obj:
if object_path.startswith(self._PS_SERVICE_OP):
obj = Service.Service(self._bus, self._new_object,
self._del_object, object_path)
elif object_path.startswith(self._PS_BUDDY_OP):
obj = Buddy.Buddy(self._bus, self._new_object,
self._del_object, object_path)
elif object_path.startswith(self._PS_ACTIVITY_OP):
obj = Activity.Activity(self._bus, self._new_object,
self._del_object, object_path)
else:
raise RuntimeError("Unknown object type")
self._objcache.add(obj)
return obj
def _del_object(self, object_path):
# FIXME
pass
def _emit_buddy_appeared_signal(self, object_path):
self.emit('BuddyAppeared', self._new_object(object_path))
return False
def _buddy_appeared_cb(self, op):
gobject.idle_add(self._emit_buddy_appeared_signal, op)
def _emit_buddy_disappeared_signal(self, object_path):
self.emit('BuddyDisappeared', self._ps_new_object(object_path))
return False
def _buddy_disappeared_cb(self, object_path):
gobject.idle_add(self._emit_buddy_disappeared_signal, object_path)
def _emit_service_appeared_signal(self, object_path):
self.emit('ServiceAppeared', self._ps_new_object(object_path))
return False
def _service_appeared_cb(self, object_path):
gobject.idle_add(self._emit_service_appeared_signal, object_path)
def _emit_service_disappeared_signal(self, object_path):
self.emit('ServiceDisappeared', self._ps_new_object(object_path))
return False
def _service_disappeared_cb(self, object_path):
gobject.idle_add(self._emit_service_disappeared_signal, object_path)
def _emit_activity_appeared_signal(self, object_path):
self.emit('ActivityAppeared', self._ps_new_object(object_path))
return False
def _activity_appeared_cb(self, object_path):
gobject.idle_add(self._emit_activity_appeared_signal, object_path)
def _emit_activity_disappeared_signal(self, object_path):
self.emit('ActivityDisappeared', self._ps_new_object(object_path))
return False
def _activity_disappeared_cb(self, object_path):
gobject.idle_add(self._emit_activity_disappeared_signal, object_path)
def getServices(self):
resp = self._ps.getServices()
servs = []
for item in resp:
servs.append(self._new_object(item))
return servs
def getServicesOfType(self, stype):
resp = self._ps.getServicesOfType(stype)
servs = []
for item in resp:
servs.append(self._new_object(item))
return servs
def getActivities(self):
resp = self._ps.getActivities()
acts = []
for item in resp:
acts.append(self._new_object(item))
return acts
def getActivity(self, activity_id):
try:
act_op = self._ps.getActivity(activity_id)
except dbus_bindings.DBusException:
return None
return self._new_object(act_op)
def getBuddies(self):
resp = self._ps.getBuddies()
buddies = []
for item in resp:
buddies.append(self._new_object(item))
return buddies
def getBuddyByName(self, name):
try:
buddy_op = self._ps.getBuddyByName(name)
except dbus_bindings.DBusException:
return None
return self._new_object(buddy_op)
def getBuddyByAddress(self, addr):
try:
buddy_op = self._ps.getBuddyByAddress(addr)
except dbus_bindings.DBusException:
return None
return self._new_object(buddy_op)
def getOwner(self):
try:
owner_op = self._ps.getOwner()
except dbus_bindings.DBusException:
return None
return self._new_object(buddy_op)
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