--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_content/shared/logo/paragraph.py	Fri Feb 09 17:48:34 2018 +0100
@@ -0,0 +1,104 @@
+#
+# 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.features.checker.interfaces import IContentChecker, MISSING_VALUE, MISSING_LANG_VALUE, ERROR_VALUE
+from pyams_content.shared.logo.interfaces import ILogosParagraph
+from pyams_i18n.interfaces import II18nManager, INegotiator, II18n
+from pyams_workflow.interfaces import IWorkflow, IWorkflowState
+
+# import packages
+from pyams_content.component.paragraph import BaseParagraph, IParagraphFactory, BaseParagraphFactory, \
+    BaseParagraphContentChecker
+from pyams_sequence.utility import get_reference_target
+from pyams_utils.adapter import adapter_config
+from pyams_utils.registry import utility_config, get_utility
+from pyams_utils.traversing import get_parent
+from zope.interface import implementer
+from zope.schema.fieldproperty import FieldProperty
+
+from pyams_content import _
+
+
+@implementer(ILogosParagraph)
+class LogosParagraph(BaseParagraph):
+    """Logos paragraph"""
+
+    icon_class = 'fa-th-large'
+    icon_hint = _("Logos")
+
+    references = FieldProperty(ILogosParagraph['references'])
+
+    def get_targets(self, state=None, with_reference=False):
+        for reference in self.references or ():
+            if with_reference:
+                yield reference, get_reference_target(reference, state)
+            else:
+                yield get_reference_target(reference, state)
+
+
+@utility_config(name='Logos', provides=IParagraphFactory)
+class LogosParagraphFactory(BaseParagraphFactory):
+    """Logos paragraph factory"""
+
+    name = _("Logos")
+    content_type = LogosParagraph
+
+
+@adapter_config(context=ILogosParagraph, provides=IContentChecker)
+class LogosParagraphContentChecker(BaseParagraphContentChecker):
+    """Logos paragraph content checker"""
+
+    def inner_check(self, request):
+        output = []
+        translate = request.localizer.translate
+        manager = get_parent(self.context, II18nManager)
+        if manager is not None:
+            langs = manager.get_languages()
+        else:
+            negotiator = get_utility(INegotiator)
+            langs = (negotiator.server_language, )
+        i18n = II18n(self.context)
+        for lang in langs:
+            value = i18n.get_attribute('title', lang, request)
+            if not value:
+                field_title = translate(ILogosParagraph['title'].title)
+                if len(langs) == 1:
+                    output.append(translate(MISSING_VALUE).format(field=field_title))
+                else:
+                    output.append(translate(MISSING_LANG_VALUE).format(field=field_title, lang=lang))
+        field_title = translate(ILogosParagraph['references'].title)
+        if not self.context.references:
+            output.append(translate(ERROR_VALUE).format(
+                field=field_title,
+                message=translate(_("no selected logo"))))
+        else:
+            for reference, target in self.context.get_targets(with_reference=True):
+                if target is None:
+                    output.append(translate(ERROR_VALUE).format(
+                        field=field_title,
+                        message=translate(_("logo '{0}' can't be found")).format(reference)))
+                else:
+                    workflow = IWorkflow(target, None)
+                    if workflow is not None:
+                        workflow_state = IWorkflowState(target)
+                        if workflow_state.state not in workflow.published_states:
+                            output.append(translate(ERROR_VALUE).format(
+                                field=field_title,
+                                message=translate(_("logo '{0}' is not published")).format(
+                                    II18n(target).query_attribute('title', request=request))))
+        return output