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# Copyright (C) 2007, Red Hat, Inc.
# Copyright (C) 2007, Collabora Ltd.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import gobject
import dbus, dbus.service
from sugar import profile
_BUDDY_PATH = "/org/laptop/Sugar/Presence/Buddies/"
_BUDDY_INTERFACE = "org.laptop.Sugar.Presence.Buddy"
_OWNER_INTERFACE = "org.laptop.Sugar.Presence.Buddy.Owner"
class NotFoundError(dbus.DBusException):
def __init__(self):
dbus.DBusException.__init__(self)
self._dbus_error_name = _PRESENCE_INTERFACE + '.NotFound'
class DBusGObjectMetaclass(gobject.GObjectMeta, dbus.service.InterfaceType): pass
class DBusGObject(dbus.service.Object, gobject.GObject): __metaclass__ = DBusGObjectMetaclass
class Buddy(DBusGObject):
"""Represents another person on the network and keeps track of the
activities and resources they make available for sharing."""
__gtype_name__ = "Buddy"
__gsignals__ = {
'validity-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_BOOLEAN]))
}
__gproperties__ = {
'key' : (str, None, None, None,
gobject.PARAM_READWRITE | gobject.PARAM_CONSTRUCT_ONLY),
'icon' : (str, None, None, None, gobject.PARAM_READWRITE),
'nick' : (str, None, None, None, gobject.PARAM_READWRITE),
'color' : (str, None, None, None, gobject.PARAM_READWRITE),
'current-activity' : (str, None, None, None, gobject.PARAM_READWRITE),
'valid' : (bool, None, None, False, gobject.PARAM_READABLE),
'owner' : (bool, None, None, False, gobject.PARAM_READABLE)
}
def __init__(self, bus_name, object_id, **kwargs):
if not bus_name:
raise ValueError("DBus bus name must be valid")
if not object_id or not isinstance(object_id, int):
raise ValueError("object id must be a valid number")
self._bus_name = bus_name
self._object_id = object_id
self._object_path = _BUDDY_PATH + str(self._object_id)
dbus.service.Object.__init__(self, self._bus_name, self._object_path)
self._activities = {} # Activity ID -> Activity
self.handles = {} # tp client -> handle
self._valid = False
self._owner = False
self._key = None
self._icon = ''
if not kwargs.get("key"):
raise ValueError("key required")
gobject.GObject.__init__(self, **kwargs)
def do_get_property(self, pspec):
if pspec.name == "key":
return self._key
elif pspec.name == "icon":
return self._icon
elif pspec.name == "nick":
return self._nick
elif pspec.name == "color":
return self._color
elif pspec.name == "current-activity":
if not self._current_activity:
return None
if not self._activities.has_key(self._current_activity):
return None
return self._activities[self._current_activity]
elif pspec.name == "valid":
return self._valid
elif pspec.name == "owner":
return self._owner
def do_set_property(self, pspec, value):
if pspec.name == "icon":
if value != self._icon:
self._icon = value
self.IconChanged(value)
elif pspec.name == "nick":
self._nick = value
elif pspec.name == "color":
self._color = value
elif pspec.name == "current-activity":
self._current_activity = value
elif pspec.name == "key":
self._key = value
self._update_validity()
# dbus signals
@dbus.service.signal(_BUDDY_INTERFACE,
signature="ay")
def IconChanged(self, icon_data):
pass
@dbus.service.signal(_BUDDY_INTERFACE,
signature="o")
def JoinedActivity(self, activity_path):
pass
@dbus.service.signal(_BUDDY_INTERFACE,
signature="o")
def LeftActivity(self, activity_path):
pass
@dbus.service.signal(_BUDDY_INTERFACE,
signature="a{sv}")
def PropertyChanged(self, updated):
pass
# dbus methods
@dbus.service.method(_BUDDY_INTERFACE,
in_signature="", out_signature="ay")
def GetIcon(self):
if not self.props.icon:
return ""
return dbus.ByteArray(self.props.icon)
@dbus.service.method(_BUDDY_INTERFACE,
in_signature="", out_signature="ao")
def GetJoinedActivities(self):
acts = []
for act in self.get_joined_activities():
acts.append(act.object_path())
return acts
@dbus.service.method(_BUDDY_INTERFACE,
in_signature="", out_signature="a{sv}")
def GetProperties(self):
props = {}
props['nick'] = self.props.nick
props['owner'] = self.props.owner
props['key'] = self.props.key
props['color'] = self.props.color
return props
# methods
def object_path(self):
return dbus.ObjectPath(self._object_path)
def add_activity(self, activity):
actid = activity.props.id
if self._activities.has_key(actid):
return
self._activities[actid] = activity
if activity.props.valid:
self.JoinedActivity(activity.object_path())
def remove_activity(self, activity):
actid = activity.props.id
if not self._activities.has_key(actid):
return
del self._activities[actid]
if activity.props.valid:
self.LeftActivity(activity.object_path())
def get_joined_activities(self):
acts = []
for act in self._activities.values():
if act.props.valid:
acts.append(act)
return acts
def set_properties(self, properties):
if "nick" in properties.keys():
self._nick = properties["nick"]
if "color" in properties.keys():
self._color = properties["color"]
# Try emitting PropertyChanged before updating validity
# to avoid leaking a PropertyChanged signal before the buddy is
# actually valid the first time after creation
if self._valid:
self.PropertyChanged(properties)
self._update_validity()
def _update_validity(self):
try:
old_valid = self._valid
if self._color and self._nick and self._key:
self._valid = True
else:
self._valid = False
if old_valid != self._valid:
self.emit("validity-changed", self._valid)
except AttributeError:
self._valid = False
class Owner(Buddy):
"""Class representing the owner of the machine. This is the client
portion of the Owner, paired with the server portion in Owner.py."""
def __init__(self, bus_name, object_id):
key = profile.get_pubkey()
nick = profile.get_nick_name()
color = profile.get_color().to_string()
Buddy.__init__(self, bus_name, object_id, key=key, nick=nick, color=color)
self._owner = True
# dbus methods
@dbus.service.method(_OWNER_INTERFACE,
in_signature="ay", out_signature="")
def SetIcon(self, icon_data):
self.props.icon = icon_data
@dbus.service.method(_OWNER_INTERFACE,
in_signature="a{sv}", out_signature="")
def SetProperties(self, prop):
self.set_properties(self, prop)
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