--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_content/component/extfile/manager.py	Wed Oct 17 14:40:14 2018 +0200
@@ -0,0 +1,33 @@
+#
+# Copyright (c) 2008-2018 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+
+__docformat__ = 'restructuredtext'
+
+from persistent import Persistent
+from zope.interface import implementer
+from zope.schema.fieldproperty import FieldProperty
+
+from pyams_content.component.extfile.interfaces import EXTFILE_MANAGER_INFO_KEY, IExtFileManagerInfo
+from pyams_content.root import ISiteRoot
+from pyams_utils.adapter import adapter_config, get_annotation_adapter
+
+
+@implementer(IExtFileManagerInfo)
+class ExtFileManagerInfo(Persistent):
+    """external files manager settings"""
+
+    default_title_prefix = FieldProperty(IExtFileManagerInfo['default_title_prefix'])
+
+
+@adapter_config(context=ISiteRoot, provides=IExtFileManagerInfo)
+def site_root_extfile_manager_info_factory(context):
+    return get_annotation_adapter(context, EXTFILE_MANAGER_INFO_KEY, ExtFileManagerInfo)