provide traversal class + corresponding configure file for being able to use Dojo in Zope 2

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2832 fd906abe-77d9-0310-91a1-e0d9ade77398

ajax/dojo/configure-z2.zcml

@@ -0,0 +1,9 @@
+<!-- $Id$ -->
+
+<configure
+    xmlns="http://namespaces.zope.org/browser"
+    xmlns:zope="http://namespaces.zope.org/zope">
+
+  <resourceDirectory name="ajax.dojo" directory="dojo" />
+
+</configure>

ajax/dojo/z2traversal.py

@@ -0,0 +1,56 @@
+#
+#  Copyright (c) 2008 Helmut Merz - helmutm@cy55.de
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+"""
+Customized IPublishTraverse adapter(s) for Zope 2.
+
+$Id$
+"""
+
+from zope.publisher.interfaces import NotFound
+
+
+class ResourceTraverser(object):
+    """ IPublishTraverse adapter for file and directory resources,
+        allows using resource file names with underscores, like e.g.
+        used by Dojo.
+
+        Include in your configure.zcml via this directive:
+          <zope:adapter
+                for="zope.component.interfaces.IResource
+                     zope.publisher.interfaces.browser.IBrowserRequest"
+                provides="zope.publisher.interfaces.browser.IBrowserPublisher"
+                factory="cybertools.ajax.dojo.z2traversal.ResourceTraverser" />
+    """
+
+    def __init__(self, context, request):
+        self.context = context
+        self.request = request
+
+    def publishTraverse(self, request, name):
+        if hasattr(self.context, 'get'):
+            subob = self.context.get(name, None)
+        else:
+            subob = getattr(self.context, name, None)
+        if subob is None:
+            raise NotFound(self.context, name, request)
+        return subob
+
+    def browserDefault(self, request):
+        if hasattr(self.context, '__browser_default__'):
+            return self.context.__browser_default__(request)
+        return self.context, ()