On Jun 27, 2007, at 8:00 PM, Noah Gift wrote:
> How will the template play into the toscawidget design. Ideally, a
> widget could be written and used without the template language
> being involved, is this always the case? If not there will not be
> a 100% toscawidget API between Pylons and Turbogears as it is
> Genshi vs Mako
Widgets themselves don't know anything about their template. The just
populate a dict and push it to the EngineManager, which, based on the
widget's engine_name and template attributes, determine which
engine'template to rebder that dict with.
This means that as long as the templates are equivalent (produce
roughly the same html output), then engines can be swapped freely.
For example, this is twForms TextField's code:
class TextField(InputField):
"""A text field"""
params = ["size", "max_size"]
size__doc = "The size of the text field."
size__doc = "The maximum size of the field"
type = "text"
def update_params(self,d):
super(TextField, self).update_params(d)
self.update_attrs(d, "size", "max_size")
(template is inheritted from InputField)
and this is the (genshi) template:
<input xmlns="http://www.w3.org/1999/xhtml";
xmlns:py="http://genshi.edgewall.org/";
type="${type}" name="${name}" class="${css_class}" id="${id}"
value="${value}"
py:attrs="attrs" />
To make a textfield that used Mako you'll just need to make a mako
equivalent template for the above and stick it into a TextField
subclass:
class MakoTextField(TextField):
engine = "mako:path.to.template"
I've already mentioned this in TW's mailing list but it's worth
repeating:
I'm open to contrubutions for Mako equivalent templates to bundle
them with twForms. That will allow me to remove the Genshi dependency
and provide both mako and genshi as extras_requires so users could
choose.
Alberto
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