Added condition on Archetypes warning viewlet to ensure the product w…

…ill work for Dexterity only sites.

plone/app/contenttypes/browser/configure.zcml

@@ -2,6 +2,7 @@
   xmlns="http://namespaces.zope.org/zope"
   xmlns:browser="http://namespaces.zope.org/browser"
   xmlns:plone="http://namespaces.plone.org/plone"
+  xmlns:zcml="http://namespaces.zope.org/zcml"
   i18n_domain="plone">
 
   <include package="plone.app.contentmenu" />
@@ -241,15 +242,17 @@
     allowed_interface="plone.app.contenttypes.browser.utils.IUtils"
     />
 
-  <browser:viewlet
-    name="archetypes_warning_viewlet"
-    for="Products.Archetypes.interfaces.base.IBaseObject"
-    manager="plone.app.layout.viewlets.interfaces.IAboveContent"
-    class=".viewlets.ATWarningViewlet"
-    template="templates/archetypes_warning_viewlet.pt"
-    layer="plone.app.contenttypes.interfaces.IPloneAppContenttypesLayer"
-    permission="cmf.ModifyPortalContent" />
-
+  <configure zcml:condition="installed Products.Archetypes">
+    <browser:viewlet
+      name="archetypes_warning_viewlet"
+      for="Products.Archetypes.interfaces.base.IBaseObject"
+      manager="plone.app.layout.viewlets.interfaces.IAboveContent"
+      class=".viewlets.ATWarningViewlet"
+      template="templates/archetypes_warning_viewlet.pt"
+      layer="plone.app.contenttypes.interfaces.IPloneAppContenttypesLayer"
+      permission="cmf.ModifyPortalContent"
+      />
+  </configure>
   <!-- Query string widget -->
   <adapter factory=".widgets.QueryStringFieldWidget" />