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Viewing changes to ivle/webapp/base/xhtml.py

  • Committer: mattgiuca
  • Date: 2008-01-11 00:49:06 UTC
  • Revision ID: svn-v3-trunk0:2b9c9e99-6f39-0410-b283-7f802c844ae2:trunk:172
util: Added buildurl function.

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ivle/webapp/base/xhtml.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: Nick Chadwick
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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.media import media_url
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from ivle.webapp.base.views import BaseView
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import ivle.conf
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import ivle.util
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class XHTMLView(BaseView):
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    """
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    A view which provides a base class for views which need to return XHTML
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    It is expected that apps which use this view will be written using Genshi
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    templates.
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    """
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    template = 'template.html'
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    plugin_scripts = {}
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    plugin_styles = {}
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    def __init__(self, req, **kwargs):
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        for key in kwargs:
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            setattr(self, key, kwargs[key])
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    def render(self, req):
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        req.content_type = 'text/html' # TODO: Detect application/xhtml+xml
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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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        req.write_html_head_foot = False
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        loader = genshi.template.TemplateLoader(".", auto_reload=True)
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        tmpl = loader.load(app_template)
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        app = tmpl.generate(viewctx)
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        for plugin in self.plugin_scripts:
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            for path in self.plugin_scripts[plugin]:
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                req.scripts.append(media_url(req, plugin, path))
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        for plugin in self.plugin_styles:
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            for path in self.plugin_styles[plugin]:
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                req.styles.append(media_url(req, plugin, path))
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        # Global template
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        ctx = genshi.template.Context()
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        ctx['app_styles'] = req.styles
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        ctx['scripts'] = req.scripts
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        ctx['scripts_init'] = req.scripts_init
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        ctx['app_template'] = app
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        self.populate_headings(req, ctx)
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        tmpl = loader.load(os.path.join(os.path.dirname(__file__), 
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                                                        'ivle-headings.html'))
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        req.write(tmpl.generate(ctx).render('xhtml', doctype='xhtml'))
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    def populate_headings(self, req, ctx):
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        ctx['favicon'] = None
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        ctx['root_dir'] = ivle.conf.root_dir
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        ctx['public_host'] = ivle.conf.public_host
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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['publicmode'] = req.publicmode
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        ctx['apps_in_tabs'] = []
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        for urlname in ivle.conf.apps.apps_in_tabs:
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            new_app = {}
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            app = ivle.conf.apps.app_url[urlname]
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            new_app['this_app'] = hasattr(self, 'appname') \
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                                  and urlname == self.appname
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            if app.icon:
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                new_app['has_icon'] = True
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                icon_dir = ivle.conf.apps.app_icon_dir
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                icon_url = ivle.util.make_path(os.path.join(icon_dir, app.icon))
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                new_app['icon_url'] = icon_url
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                if new_app['this_app']:
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                    ctx['favicon'] = icon_url
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            else:
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                new_app['has_icon'] = False
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            new_app['path'] = ivle.util.make_path(urlname)
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            new_app['desc'] = app.desc
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            new_app['name'] = app.name
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            ctx['apps_in_tabs'].append(new_app)