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Viewing changes to lib/canonical/launchpad/webapp/namespace.py

  • Committer: Gary Poster
  • Date: 2011-07-27 15:25:32 UTC
  • mto: This revision was merged to the branch mainline in revision 13541.
  • Revision ID: gary.poster@canonical.com-20110727152532-50akr19c7mgcj5qu
add config option for timeout value

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lib/canonical/launchpad/webapp/namespace.py
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# Copyright 2009-2011 Canonical Ltd.  This software is licensed under the
 
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# Copyright 2009 Canonical Ltd.  This software is licensed under the
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# GNU Affero General Public License version 3 (see the file LICENSE).
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__metaclass__ = type
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__all__ = [
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    'FormNamespaceView',
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    'JsonModelNamespaceView',
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    ]
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from z3c.ptcompat import ViewPageTemplateFile
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from zope.app.pagetemplate.viewpagetemplatefile import BoundPageTemplate
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from zope.app.publisher.browser import getDefaultViewName
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from zope.component import getMultiAdapter
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from zope.security.proxy import removeSecurityProxy
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from zope.traversing.interfaces import TraversalError
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from zope.traversing.namespace import view
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from zope.interface import implements
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from zope.publisher.interfaces.browser import IBrowserPublisher
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from lp.app.browser.launchpadform import LaunchpadFormView
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        context = removeSecurityProxy(self.context)
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        if isinstance(context, LaunchpadFormView):
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            # Note: without explicitly creating the BoundPageTemplate here
 
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            # Note: without explicitely creating the BoundPageTemplate here
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            # the view fails to render.
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            context.index = BoundPageTemplate(FormNamespaceView.template,
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                                              context)
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            raise TraversalError("The URL does not correspond to a form.")
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        return self.context
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class JsonModelNamespaceView(view):
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    """A namespace view to handle traversals with ++model++.
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    Use of this namespace is only guaranteed to work if it is fully populated
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    by a view's `initialize` method.  Any objects added after the call to
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    initialize will not be presented by the namespace.
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    """
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    implements(IBrowserPublisher)
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    def traverse(self, name, ignored):
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        """Model traversal adapter.
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        This adapter allows any LaunchpadView to render its JSON cache.
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        """
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        return self
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    def browserDefault(self, request):
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        # Tell traversal to stop, already.
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        return self, None
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    def __call__(self):
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        """Return the JSON cache."""
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        if IBrowserPublisher.providedBy(self.context):
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            view = self.context
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        else:
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            defaultviewname = getDefaultViewName(
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                self.context, self.request)
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            view = getMultiAdapter(
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                (self.context, self.request), name=defaultviewname)
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        if view is None:
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            return
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        naked_view = removeSecurityProxy(view)
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        naked_view.initialize()
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        cache = naked_view.getCacheJSON()
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        self.request.response.setHeader('content-type', 'application/json')
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        return cache