diff -r 000000000000 -r 7c0001cacf8e src/pyams_content/component/links/interfaces/__init__.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_content/component/links/interfaces/__init__.py	Thu Oct 08 13:37:29 2015 +0200
@@ -0,0 +1,103 @@
+#
+# 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 zope.annotation.interfaces import IAttributeAnnotatable
+from zope.container.interfaces import IContainer
+
+# import packages
+from pyams_i18n.schema import I18nTextLineField, I18nTextField
+from pyams_sequence.schema import InternalReference
+from pyams_utils.schema import PersistentList
+from zope.container.constraints import containers, contains
+from zope.interface import Interface, Attribute
+from zope.schema import Choice, TextLine
+
+from pyams_content import _
+
+
+LINK_CONTAINER_KEY = 'pyams_content.link'
+LINK_LINKS_CONTAINER_KEY = 'pyams_content.link.links'
+
+
+class IBaseLink(IAttributeAnnotatable):
+    """Base link interface"""
+
+    containers('.ILinkContainer')
+
+    title = I18nTextLineField(title=_("Title"),
+                              description=_("Link title, as shown in front-office"),
+                              required=True)
+
+    description = I18nTextField(title=_("Description"),
+                                description=_("Link description displayed by front-office template"),
+                                required=False)
+
+    def get_editor_url(self):
+        """Get URL for use in HTML editor"""
+
+    def get_url(self, request, view_name=None):
+        """Get link URL"""
+
+
+class IInternalLink(IBaseLink):
+    """Internal link interface"""
+
+    reference = InternalReference(title=_("Internal reference"),
+                                  description=_("Internal link target reference. You can search a reference using "
+                                                "'+' followed by internal number, of by entering text matching "
+                                                "content title."),
+                                  required=True)
+
+    def get_target(self, state=None):
+        """Get reference target"""
+
+
+class IExternalLink(IBaseLink):
+    """External link interface"""
+
+    url = TextLine(title=_("Target URL"),
+                   description=_("URL used to access external resource"),
+                   required=True)
+
+    language = Choice(title=_("Language"),
+                      description=_("Language used in this remote resource"),
+                      vocabulary='PyAMS base languages',
+                      required=False)
+
+
+class ILinkContainer(IContainer):
+    """Links container"""
+
+    contains(IBaseLink)
+
+
+class ILinkContainerTarget(Interface):
+    """Links container marker interface"""
+
+
+class ILinkLinksContainer(Interface):
+    """Links links container interface"""
+
+    links = PersistentList(title=_("Contained links"),
+                           description=_("List of internal or external links linked to this object"),
+                           value_type=Choice(vocabulary="PyAMS content links"),
+                           required=False)
+
+
+class ILinkLinksContainerTarget(Interface):
+    """Links links container marker interface"""