from somewhere.cpia_templates import Menu, MenuItem
Menu("FileMenu", _('File'), [
Menu("NewMenu", _('New...'), [
MenuItem("NewMessageItem", _("Message"), ...),
MenuItem("NewNoteItem", _("Note"), ...),
])
]).install(parcel)
Wow. If you can explain a little more about how to do this, I'll throw
away all of my XmlForCpia work - seriously :)
do you mean that "Menu" is just a template wrapper around the Menu
class, or that we're somehow making the Menu class also implement this
template class?
i.e. is this something like, in somewhere.cpia_templates:
from osaf.framework import Blocks
Menu = template(Blocks.Menu)?
Alec
where the translation is something like:
class template(object):
child_attrs = ()
target_class = None
def __init__(self, itsName, **attrs):
self.attrs = attrs
self.itsName = itsName
def install(parent,name=None):
if name is None: name=self.itsName
me = target_class.update(parent,name) # make parent exist
attrs = self.attrs.copy()
for attr in self.child_attrs:
if attr in attrs:
attrs[attr] = [
t.install(me) for t in attrs[attr]
]
return target_class.update(parent,name,**attrs)
class Menu(template):
child_attrs = ('childrenBlocks',)
target_class = blocks.Menu
def __init__(self, itsName, title, ..., **attrs):
super(Menu,self).__init__(itsName, title=title, ..., **attrs)
You'll notice that this relatively simple arrangement can takes care
of all your requests except item #3, which I'd need to think about a
little more before proposing a solution.
Also, although I've written this as a set of template classes, this
could be hacked a little so there's only one template class, and
everything else is a factory method on the target classes.
But this is basically xml-translated-into-lists-and-dicts and seemed
a little silly - I mean when writing it its harder to figure out the
correct syntax, brace balancing, and so forth.. furthermore you'd
STILL have to write some sort of processor for this datastructure.
Since there are tools to do this for you with XML (emacs, eclipse,
you name it) it just makes more sense to me to do this in XML
If you have another specific suggestion for improving cpia's API to
make this cleaner, I'm all ears.
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