Move viewlets to browser package, use a layer instead of an overrides.zcml. Also add ++comment++ namespace, though it may require refactoring

svn path=/plone.app.discussion/trunk/; revision=27055

plone/app/discussion/browser/configure.zcml

@@ -3,5 +3,19 @@
     xmlns:browser="http://namespaces.zope.org/browser"
     i18n_domain="plone.app.discussion">
     
+    <!-- Traversal adapter -->
+    <adapter factory=".traversal.ConversationNamespace" name="comment" />
+
+    <!-- Comments viewlet -->
+    <browser:viewlet
+        name="plone.comments"
+        for="Products.CMFCore.interfaces.IContentish"
+        layer="..interfaces.IDiscussionLayer"
+        view="plone.app.layout.globals.interfaces.IViewView"
+        manager="plone.app.layout.viewlets.interfaces.IBelowContent"
+        template="comments.pt"
+        class=".comments.CommentsViewlet"
+        permission="zope2.View"
+        />
 
 </configure>

plone/app/discussion/browser/traversal.py

@@ -3,3 +3,28 @@ IDiscussion container for the context, from which traversal will continue
 into an actual comment object.
 """
 
+from zope.interface import Interface, implements
+from zope.component import adapts
+
+from zope.traversing.interfaces import ITraversable, TraversalError
+from zope.publisher.interfaces.browser import IBrowserRequest
+
+from plone.app.discussion.interfaces import IConversation
+
+class ConversationNamespace(object):
+    """Allow traversal into a conversation
+    """
+    implements(ITraversable)
+    adapts(Interface, IBrowserRequest)
+    
+    def __init__(self, context, request=None):
+        self.context = context
+        self.request = request
+        
+    def traverse(self, name, ignore):
+        
+        conversation = IConversation(self.context, None)
+        if conversation is None:
+            raise TraversalError('++comment++')
+        
+        return conversation.__of__(self.context)

plone/app/discussion/configure.zcml

@@ -5,7 +5,6 @@
 
     <include file="permissions.zcml" />
     <include package=".browser" />
-    <include package=".viewlets" />
 
     <!-- Register the installation GenericSetup extension profile -->
     <genericsetup:registerProfile

plone/app/discussion/conversation.py

@@ -16,7 +16,8 @@ from persistent import Persistent
 
 from zope.interface import implements, implementer
 from zope.component import adapts, adapter
-from zope.annotation.interfaces import IAnnotations
+
+from zope.annotation.interfaces import IAnnotations, IAnnotatable
 
 from zope.event import notify
 
@@ -33,8 +34,6 @@ from zope.app.container.contained import ContainerModifiedEvent
 from zope.app.container.contained import ObjectAddedEvent
 from zope.app.container.contained import ObjectRemovedEvent
 
-from zope.annotation.interfaces import IAnnotatable
-
 from BTrees.OIBTree import OIBTree
 
 try:
@@ -59,7 +58,7 @@ class Conversation(Traversable, Persistent, Explicit):
     
     implements(IConversation)
     
-    def __init__(self, id="++comments++"):
+    def __init__(self, id="++comment++"):
         self.id = id
         
         # username -> count of comments; key is removed when count reaches 0

plone/app/discussion/interfaces.py

@@ -158,3 +158,7 @@ class ICommentingTool(Interface):
     def searchResults(REQUEST=None, **kw):
         """Perform a search over all indexed comments.
         """
+
+class IDiscussionLayer(Interface):
+    """Request marker installed via browserlayer.xml.
+    """

plone/app/discussion/overrides.zcml

@@ -1,6 +0,0 @@
-<configure xmlns="http://namespaces.zope.org/zope">
-
-    <include
-        file="viewlets/overrides.zcml" />
-
-</configure>

plone/app/discussion/profiles/default/browserlayer.xml

@@ -0,0 +1,6 @@
+<layers>
+    <layer
+        name="plone.app.discussion"
+        interface="plone.app.discussion.interfaces.IDiscussionLayer"
+        />
+</layers>

plone/app/discussion/tests/test_comment.py

@@ -34,6 +34,13 @@ class CommentTest(PloneTestCase):
         
     def test_traversal(self):
         # make sure comments are traversable, have an id, absolute_url and physical path
+        
+        # XXX - traversal doesn't work without a name?
+        conversation = self.portal.doc1.restrictedTraverse('++comment++1')        
+        self.assert_(IConversation.providedBy(conversation))
+        
+        # TODO: Test adding comments, traversing to them
+        
         pass
     
     def test_workflow(self):

plone/app/discussion/viewlets/configure.zcml

@@ -1,3 +0,0 @@
-<configure xmlns="http://namespaces.zope.org/zope">
-
-</configure>

plone/app/discussion/viewlets/overrides.zcml

@@ -1,14 +0,0 @@
-<configure xmlns="http://namespaces.zope.org/zope"
-           xmlns:browser="http://namespaces.zope.org/browser">
-
-	<!-- comments viewlet -->
-    <browser:viewlet
-        name="plone.comments"
-        for="Products.CMFCore.interfaces.IContentish"
-        manager="plone.app.layout.viewlets.interfaces.IBelowContent"
-        view="plone.app.layout.globals.interfaces.IViewView"
-        template="comments.pt"
-        class="plone.app.discussion.viewlets.comments.CommentsViewlet"
-        permission="zope2.View" />
-
-</configure>