From 6240c1cf6fbd47da6743d4a66ebee21cf07fa6a5 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <mpg@redhat.com>
Date: Tue, 16 Oct 2007 09:04:59 +0000
Subject: Cleanup the source structure

---
(limited to 'lib/sugar/objects/objecttype.py')

diff --git a/lib/sugar/objects/objecttype.py b/lib/sugar/objects/objecttype.py
new file mode 100644
index 0000000..a819216
--- /dev/null
+++ b/lib/sugar/objects/objecttype.py
@@ -0,0 +1,79 @@
+# Copyright (C) 2006-2007, Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+import dbus
+
+_SERVICE = "org.laptop.ObjectTypeRegistry"
+_PATH = "/org/laptop/ObjectTypeRegistry"
+_IFACE = "org.laptop.ObjectTypeRegistry"
+
+def _object_type_from_dict(info_dict):
+    if info_dict:
+        return ObjectType(info_dict['type_id'],
+                          info_dict['name'],
+                          info_dict['icon'],
+                          info_dict['mime_types'])
+    else:
+        return None
+
+class ObjectType(object):
+    def __init__(self, type_id, name, icon, mime_types):
+        self.type_id = type_id
+        self.name = name
+        self.icon = icon
+        self.mime_types = mime_types
+        
+        self._type_id_to_type = {}
+        self._mime_type_to_type = {}
+
+class ObjectTypeRegistry(object):
+    def __init__(self):
+        bus = dbus.SessionBus()
+        bus_object = bus.get_object(_SERVICE, _PATH)
+        self._registry = dbus.Interface(bus_object, _IFACE)
+        
+        # Two caches fo saving some travel across dbus.
+        self._type_id_to_type = {}
+        self._mime_type_to_type = {}
+
+    def get_type(self, type_id):
+        if self._type_id_to_type.has_key(type_id):
+            return self._type_id_to_type[type_id]
+
+        type_dict = self._registry.GetType(type_id)
+        object_type = _object_type_from_dict(type_dict)
+
+        self._type_id_to_type[type_id] = object_type
+        return object_type
+
+    def get_type_for_mime(self, mime_type):
+        if self._mime_type_to_type.has_key(mime_type):
+            return self._mime_type_to_type[mime_type]
+
+        type_dict = self._registry.GetTypeForMIME(mime_type)
+        object_type = _object_type_from_dict(type_dict)
+
+        self._mime_type_to_type[mime_type] = object_type
+        return object_type
+
+_registry = None
+
+def get_registry():
+    global _registry
+    if not _registry:
+        _registry = ObjectTypeRegistry()
+    return _registry
--
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