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Re: HTML 5 and Distributed Extensibility

From: T.V Raman <raman@google.com>
Date: Wed, 26 Sep 2007 16:43:42 -0700
Message-ID: <18170.61102.475523.804151@retriever.corp.google.com>
To: annevk@opera.com
Cc: raman@google.com, peter.krantz@gmail.com, dorchard@bea.com, public-html@w3.org

Anne, Please keep your personal opinions about RDF-A to yourself,
I dont need to hear them, just as you dont need to hear mine.

If you read what I wrote without viewing everything through a
biased lens, you'll see that I said you need custom elements
because it's nice to attach behavior and style via XBL, and
therefore simplify ones markup --- which is where introducing
custom elements come in.

Anne van Kesteren writes:
 > On Wed, 26 Sep 2007 19:31:17 +0200, T.V Raman <raman@google.com> wrote:
 > > In a world where one can attach style and behavior to content via
 > > XBL, it becomes fairly easy for sites across the Web to simplify
 > > their markup by introducing small, tightly focused specialized
 > > vocabularies
 > I don't believe RDFa really helps with this though. As it is based on the  
 > (horrid, imo) concept of qnames in content two equivalent (not identical)  
 > documents can't necessarily be styled using the same binding because the  
 > Selectors language and the DOM have no support for qnames in content.
 > An example where this would apply is given an attribute bar that accepts  
 > qnames in content on element foo for markup constructs
 >   * <foo bar="x:x">
 >   * <foo bar="y:x">
 > where the x and y prefixes are both bound to the same namespace somewhere  
 > higher up in the tree structure they can not be selected using Selectors  
 > (using a single selector) or by using simple convenient methods from the  
 > DOM. This kind of defeats using XBL for these constructs and it seems much  
 > better to use something like
 >   * <x:x>
 >   * <y:x>
 > with x and y bound to the same namespace (again) as this doesn't have that  
 > problem at all.
 > (I don't think this should be solved in Selectors and the DOM by the way  
 > as it would require specific knowledge about which attributes contain  
 > qnames et cetera. It also makes serialization from a DOM tree structure  
 > harder and incompatible with existing practices as rewiring prefixes which  
 > currently has no side effects in a normal XHTML document suddenly has.)
 > -- 
 > Anne van Kesteren
 > <http://annevankesteren.nl/>
 > <http://www.opera.com/>

Best Regards,

Title:  Research Scientist      
Email:  raman@google.com
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Received on Wednesday, 26 September 2007 23:44:20 UTC

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