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

  • Committer: William Grant
  • Date: 2010-07-29 11:34:44 UTC
  • Revision ID: grantw@unimelb.edu.au-20100729113444-ht6s5kdcixvfubhr
Merge video and audio handlers, and reword them.

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ivle/webapp/base/xhtml.py
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from ivle.webapp.publisher import NoPath
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from ivle.webapp.breadcrumbs import Breadcrumber
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class XHTMLView(BaseView):
 
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class GenshiLoaderMixin(object):
 
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    """Mixin for classes which need to render Genshi templates.
 
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    A TemplateLoader is shared between all instances, so templates are
 
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    cached across multiple instances and therefore also requests.
 
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    """
 
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    _loader = None
 
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    def __init__(self, *args, **kwargs):
 
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        super(GenshiLoaderMixin, self).__init__(*args, **kwargs)
 
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        # We use a single loader for all views, so we can cache the
 
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        # parsed templates. auto_reload is convenient and has a minimal
 
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        # performance penalty, so we'll leave it on.
 
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        if GenshiLoaderMixin._loader is None:
 
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            GenshiLoaderMixin._loader = genshi.template.TemplateLoader(
 
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                ".", auto_reload=True,
 
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                max_cache_size=100)
 
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class XHTMLView(GenshiLoaderMixin, 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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        # 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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        loader = genshi.template.TemplateLoader(".", auto_reload=True)
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        tmpl = loader.load(app_template)
 
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        tmpl = self._loader.load(app_template)
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        app = self.filter(tmpl.generate(viewctx), viewctx)
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        view_scripts = []
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            ctx['breadcrumbs'].extend(self.extra_breadcrumbs)
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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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        tmpl = self._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(self, req, ctx):
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        ctx['req'] = req
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        ctx['exception'] = self.context
 
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        req.headers_out['X-IVLE-Error'] = self.context.message
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class XHTMLUnauthorizedView(XHTMLErrorView):
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    template = 'xhtmlunauthorized.html'