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# IVLE - Informatics Virtual Learning Environment
# Copyright (C) 2007-2009 The University of Melbourne
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Author: Nick Chadwick
import inspect
import os.path
import genshi.template
from ivle.webapp.media import media_url
from ivle.webapp.base.views import BaseView
import ivle.conf
import ivle.util
class XHTMLView(BaseView):
"""
A view which provides a base class for views which need to return XHTML
It is expected that apps which use this view will be written using Genshi
templates.
"""
template = 'template.html'
plugin_scripts = {}
plugin_styles = {}
def __init__(self, req, **kwargs):
for key in kwargs:
setattr(self, key, kwargs[key])
def render(self, req):
req.content_type = 'text/html' # TODO: Detect application/xhtml+xml
# View template
viewctx = genshi.template.Context()
self.populate(req, viewctx)
# The template is found in the directory of the module containing the
# view.
app_template = os.path.join(os.path.dirname(
inspect.getmodule(self).__file__), self.template)
req.write_html_head_foot = False
loader = genshi.template.TemplateLoader(".", auto_reload=True)
tmpl = loader.load(app_template)
app = tmpl.generate(viewctx)
for plugin in self.plugin_scripts:
for path in self.plugin_scripts[plugin]:
req.scripts.append(media_url(req, plugin, path))
for plugin in self.plugin_styles:
for path in self.plugin_styles[plugin]:
req.styles.append(media_url(req, plugin, path))
# Global template
ctx = genshi.template.Context()
ctx['app_styles'] = req.styles
ctx['scripts'] = req.scripts
ctx['scripts_init'] = req.scripts_init
ctx['app_template'] = app
self.populate_headings(req, ctx)
tmpl = loader.load(os.path.join(os.path.dirname(__file__),
'ivle-headings.html'))
req.write(tmpl.generate(ctx).render('xhtml', doctype='xhtml'))
def populate_headings(self, req, ctx):
ctx['favicon'] = None
ctx['root_dir'] = ivle.conf.root_dir
ctx['public_host'] = ivle.conf.public_host
ctx['write_javascript_settings'] = req.write_javascript_settings
if req.user:
ctx['login'] = req.user.login
ctx['logged_in'] = True
ctx['nick'] = req.user.nick
else:
ctx['login'] = None
ctx['publicmode'] = req.publicmode
ctx['apps_in_tabs'] = []
for urlname in ivle.conf.apps.apps_in_tabs:
new_app = {}
app = ivle.conf.apps.app_url[urlname]
new_app['this_app'] = hasattr(self, 'appname') \
and urlname == self.appname
if app.icon:
new_app['has_icon'] = True
icon_dir = ivle.conf.apps.app_icon_dir
icon_url = ivle.util.make_path(os.path.join(icon_dir, app.icon))
new_app['icon_url'] = icon_url
if new_app['this_app']:
ctx['favicon'] = icon_url
else:
new_app['has_icon'] = False
new_app['path'] = ivle.util.make_path(urlname)
new_app['desc'] = app.desc
new_app['name'] = app.name
ctx['apps_in_tabs'].append(new_app)
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