--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_content/component/paragraph/container.py	Thu Oct 08 13:37:29 2015 +0200
@@ -0,0 +1,71 @@
+#
+# 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_content.component.paragraph.interfaces import IParagraphContainer, IParagraphContainerTarget, \
+    PARAGRAPH_CONTAINER_KEY
+from zope.annotation.interfaces import IAnnotations
+from zope.location.interfaces import ISublocations
+from zope.traversing.interfaces import ITraversable
+
+# import packages
+from pyams_utils.adapter import adapter_config, ContextAdapter
+from pyams_utils.container import BTreeOrderedContainer
+from pyramid.threadlocal import get_current_registry
+from zope.interface import implementer
+from zope.lifecycleevent import ObjectCreatedEvent
+from zope.location import locate
+
+
+@implementer(IParagraphContainer)
+class ParagraphContainer(BTreeOrderedContainer):
+    """Paragraphs container"""
+
+    last_id = 1
+
+    def __setitem__(self, key, value):
+        key = str(self.last_id)
+        super(ParagraphContainer, self).__setitem__(key, value)
+        self.last_id += 1
+
+
+@adapter_config(context=IParagraphContainerTarget, provides=IParagraphContainer)
+def paragraph_container_factory(target):
+    """Paragraphs container factory"""
+    annotations = IAnnotations(target)
+    container = annotations.get(PARAGRAPH_CONTAINER_KEY)
+    if container is None:
+        container = annotations[PARAGRAPH_CONTAINER_KEY] = ParagraphContainer()
+        get_current_registry().notify(ObjectCreatedEvent(container))
+        locate(container, target, '++paras++')
+    return container
+
+
+@adapter_config(name='paras', context=IParagraphContainerTarget, provides=ITraversable)
+class ParagraphContainerNamespace(ContextAdapter):
+    """++paras++ namespace adapter"""
+
+    def traverse(self, name, furtherpath=None):
+        return IParagraphContainer(self.context)
+
+
+@adapter_config(name='paras', context=IParagraphContainerTarget, provides=ISublocations)
+class ParagraphContainerSublocations(ContextAdapter):
+    """Paragraphs container sublocations"""
+
+    def sublocations(self):
+        return IParagraphContainer(self.context).values()