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80 lines
2.6 KiB
Python
80 lines
2.6 KiB
Python
# Copyright (C) 2006-2007, Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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import dbus
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_SERVICE = "org.laptop.ObjectTypeRegistry"
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_PATH = "/org/laptop/ObjectTypeRegistry"
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_IFACE = "org.laptop.ObjectTypeRegistry"
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def _object_type_from_dict(info_dict):
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if info_dict:
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return ObjectType(info_dict['type_id'],
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info_dict['name'],
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info_dict['icon'],
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info_dict['mime_types'])
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else:
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return None
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class ObjectType(object):
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def __init__(self, type_id, name, icon, mime_types):
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self.type_id = type_id
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self.name = name
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self.icon = icon
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self.mime_types = mime_types
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self._type_id_to_type = {}
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self._mime_type_to_type = {}
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class ObjectTypeRegistry(object):
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def __init__(self):
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bus = dbus.SessionBus()
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bus_object = bus.get_object(_SERVICE, _PATH)
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self._registry = dbus.Interface(bus_object, _IFACE)
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# Two caches fo saving some travel across dbus.
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self._type_id_to_type = {}
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self._mime_type_to_type = {}
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def get_type(self, type_id):
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if self._type_id_to_type.has_key(type_id):
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return self._type_id_to_type[type_id]
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type_dict = self._registry.GetType(type_id)
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object_type = _object_type_from_dict(type_dict)
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self._type_id_to_type[type_id] = object_type
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return object_type
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def get_type_for_mime(self, mime_type):
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if self._mime_type_to_type.has_key(mime_type):
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return self._mime_type_to_type[mime_type]
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type_dict = self._registry.GetTypeForMIME(mime_type)
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object_type = _object_type_from_dict(type_dict)
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self._mime_type_to_type[mime_type] = object_type
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return object_type
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_registry = None
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def get_registry():
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global _registry
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if not _registry:
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_registry = ObjectTypeRegistry()
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return _registry
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