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RE: Hlink, CSS anyone?

From: Didier PH Martin <martind@netfolder.com>
Date: Sat, 28 Sep 2002 15:48:02 -0400
To: "'Eric van der Vlist'" <vdv@dyomedea.com>
Cc: "'Jeni Tennison'" <jeni@jenitennison.com>, <www-tag@w3.org>
Message-ID: <000401c26728$07afa6e0$c801a8c0@didierhome>

Hi Eric,

Eric said:
No, I don't think that XSLT would need to be updated: XSLT processes
trees but do not define which operations may or may not be done before a
tree reaches it.

Didier replies:
Eric why do say that? Its obvious that XSLT will have to be updated
since if the mapping is defined in a css document it will need to get it
in order to know the mapping. Can you explain in detail how, if the
mapping is contained in a CSS document, an XSLT engine will be able to
process the mapped object. Concretely speaking, let's say that the src
attribute is inherited from the xlink:href attribute. How will you do to
process a document containing only elements with the scr attribute and
having them matched with a template like the following <template
match="@xlink:href" >. How would you do that?

Eric said:
Jeni is right (IMO) when she says that a processing model could be
defined and this processing model could add CSS properties to the tree
if needed (pretty much like a SVG DOM consolidates information from XML
and information from CSS).

Didier replies:
Yes I requires a modification of the existing XSLT specs and processing
model. It needs to import a CSS document to know the mapping.

Eric said:
This kind of operation which can be done by a SAX filter as I have shown
for HLink would be slightly more complex but could be done if CSS was
used. I think that these are implementation details and several orders
of magnitude below the level of complexity of current UAs!

Didier replies:
Yes I know, we can about everything with code. But this is not the
point. The point is that to support the mapping in CSS document you'll
need to modify the existing XSLT implementations and you'll need to
modify the existing XSLT spec.

Eric said:
What is more difficult IMO is to define the *right* architecture and
model for the hyperlinks.

Didier replies:
Yes I agree and this is precisely what are all trying to do, this time
by measuring the ecological impacts to the other W3 domain languages and
in general to the actual XML architecture (also to the XML legacy out
there).

Cheers
Didier PH Martin
Received on Saturday, 28 September 2002 15:48:42 GMT

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