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  • Committer: William Grant
  • Date: 2012-06-28 01:52:02 UTC
  • Revision ID: me@williamgrant.id.au-20120628015202-f6ru7o367gt6nvgz
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ivle/webapp/base/text.py
 
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# IVLE - Informatics Virtual Learning Environment
 
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# Copyright (C) 2007-2009 The University of Melbourne
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
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# Author: Matt Giuca
 
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import inspect
 
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import os.path
 
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import genshi.template
 
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from ivle.webapp.base.views import BaseView
 
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from ivle.webapp.base.xhtml import GenshiLoaderMixin
 
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class TextView(GenshiLoaderMixin, BaseView):
 
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    """
 
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    A view which provides a base class for views which need to return plain
 
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    text results using Genshi text templates.
 
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    """
 
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    template = 'template.txt'
 
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    content_type = 'text/plain'
 
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    def get_context_ancestry(self, req):
 
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        return req.publisher.get_ancestors(self.context)
 
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    def filter(self, stream, ctx):
 
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        return stream
 
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    def render(self, req):
 
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        req.content_type = self.content_type
 
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        # View template
 
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        viewctx = genshi.template.Context()
 
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        self.populate(req, viewctx)
 
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        # The template is found in the directory of the module containing the
 
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        # view.
 
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        app_template = os.path.join(os.path.dirname(
 
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                        inspect.getmodule(self).__file__), self.template) 
 
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        tmpl = self._loader.load(app_template,
 
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                                 cls=genshi.template.text.NewTextTemplate)
 
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        app = self.filter(tmpl.generate(viewctx), viewctx)
 
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        self.populate_headings(req, viewctx)
 
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        req.write(tmpl.generate(viewctx).render())
 
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    def populate(self, req, ctx):
 
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        raise NotImplementedError()
 
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    def populate_headings(self, req, ctx):
 
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        ctx['root_dir'] = req.config['urls']['root']
 
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        ctx['public_host'] = req.config['urls']['public_host']
 
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        ctx['svn_base'] = req.config['urls']['svn_addr']
 
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        ctx['write_javascript_settings'] = req.write_javascript_settings
 
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        if req.user:
 
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            ctx['login'] = req.user.login
 
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            ctx['logged_in'] = True
 
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            ctx['nick'] = req.user.nick
 
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        else:
 
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            ctx['login'] = None
 
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            ctx['logged_in'] = False
 
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        ctx['publicmode'] = req.publicmode