# HG changeset patch
# User Thierry Florac <tflorac@ulthar.net>
# Date 1536759881 -7200
# Node ID 33490fd303378195b6aa1424d638ffefd5153353
# Parent  eb90b224add16c05a13c1bb47eb4305f8d46adf8
Define breadcrumbs provider items as iterator

diff -r eb90b224add1 -r 33490fd30337 src/pyams_skin/viewlet/breadcrumb/__init__.py
--- a/src/pyams_skin/viewlet/breadcrumb/__init__.py	Sun Sep 09 11:16:35 2018 +0200
+++ b/src/pyams_skin/viewlet/breadcrumb/__init__.py	Wed Sep 12 15:44:41 2018 +0200
@@ -25,7 +25,7 @@
 from pyams_utils.url import absolute_url
 from pyams_viewlet.viewlet import contentprovider_config, ViewContentProvider
 from pyramid.location import lineage
-from zope.interface import implementer
+from zope.interface import implementer, Interface
 from zope.schema.fieldproperty import FieldProperty
 
 
@@ -42,21 +42,19 @@
         return absolute_url(self.context, self.request, self.view_name)
 
 
-@contentprovider_config(name='pyams.breadcrumbs', layer=IPyAMSLayer)
+@contentprovider_config(name='pyams.breadcrumbs', layer=IPyAMSLayer, view=Interface)
 @template_config(template='breadcrumbs.pt', layer=IPyAMSLayer)
 class BreadcrumbsContentProvider(ViewContentProvider):
     """Breadcrumbs content provider"""
 
     @property
     def items(self):
-        result = []
         registry = self.request.registry
-        for context in lineage(self.context):
+        for context in reversed(tuple(lineage(self.context))):
             item = registry.queryMultiAdapter((context, self.request, self.view), IBreadcrumbItem)
             if item is None:
                 item = registry.queryMultiAdapter((context, self.request), IBreadcrumbItem)
-            if item is None:
-                item = registry.queryAdapter(context, IBreadcrumbItem)
+                if item is None:
+                    item = registry.queryAdapter(context, IBreadcrumbItem)
             if item is not None:
-                result.insert(0, item)
-        return result
+                yield item