provide a collection of sub-parts of a page that may be placed separately on the page

browser/common.py

@@ -192,6 +192,7 @@ class BaseView(GenericView, I18NView, SortableMixin):
     actions = {}
     portlet_actions = []
     parts = ()
+    subparts = ()
     icon = None
     modeName = 'view'
     isToplevel = False

browser/node.py

@@ -98,6 +98,18 @@ class NodeView(BaseView):
     def macro(self):
         return self.template.macros['content']
 
+    @Lazy
+    def subparts(self):
+        def getParts(n):
+            t = n.targetObjectView
+            if t is None:
+                return []
+            return t.subparts
+        parts = getParts(self)
+        for n in self.textItems:
+            parts.extend(getParts(n))
+        return parts
+
     def update(self):
         result = super(NodeView, self).update()
         self.recordAccess()