--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_gis/utility.py	Thu May 18 17:23:48 2017 +0200
@@ -0,0 +1,47 @@
+#
+# Copyright (c) 2008-2015 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'
+
+
+# import standard library
+
+# import interfaces
+from pyams_gis.interfaces.configuration import IMapConfigurationTarget
+from pyams_gis.interfaces.utility import IMapManager
+from pyams_i18n.interfaces import II18n
+
+# import packages
+from pyams_utils.registry import get_utility
+from pyams_utils.request import check_request
+from pyams_utils.vocabulary import vocabulary_config
+from zope.container.folder import Folder
+from zope.interface import implementer
+from zope.schema.vocabulary import SimpleVocabulary, SimpleTerm
+
+
+@implementer(IMapManager, IMapConfigurationTarget)
+class MapManager(Folder):
+    """Map manager utility"""
+
+
+@vocabulary_config(name='PyAMS map layers')
+class MapLayersVocabulary(SimpleVocabulary):
+    """Map manager layers vocabulary"""
+
+    def __init__(self, context):
+        request = check_request()
+        manager = get_utility(IMapManager)
+        super(MapLayersVocabulary, self).__init__([SimpleTerm(layer.__name__,
+                                                              title=II18n(layer).query_attribute('title',
+                                                                                                 request=request))
+                                                   for layer in manager.values()])