W3C home > Mailing lists > Public > public-html@w3.org > May 2008

Re: null namespace Re: Next steps for the ARIA syntax discussion

From: Boris Zbarsky <bzbarsky@MIT.EDU>
Date: Fri, 23 May 2008 13:38:54 -0500
Message-ID: <48370F3E.6080000@mit.edu>
To: Robert J Burns <rob@robburns.com>
CC: "www-tag@w3.org" <www-tag@w3.org>, "public-html@w3.org" <public-html@w3.org>, "public-xhtml2@w3.org" <public-xhtml2@w3.org>, "wai-xtech@w3.org" <wai-xtech@w3.org>

Robert J Burns wrote:
>>  img[src]
> I don't see how that would break. Not specifying a namespace does not 
> imply null namespace, does it?

It does in CSS3 Namespaces for attribute selectors.  Not for element selectors.

>  CSS that expected null namespace (I haven't read the draft CSS 
> namespace thoroughly, so I don't even know how an author specified the 
> null namespace for attributes or elements)

Please take a read at it.

>  Perhaps some DOM methods, but I can't think of any effected by 
> changing the null namespace to instead a means for scoping

   setAttributeNS("", "foo").

> Also, using CSS to select elements are much greater than using them with 
> attribute selectors. So if it works now with element selectors and XML 
> namespaces then there's no reason it couldn't work the same for attributes.

Again, if _all_ the specifications got changed all at once some of these issues 
could be mitigated.  That's not going to happen, though.

>> So setAttribute should either not follow the DOM spec or the DOM spec 
>> should be changed?
> The browsers are not following the DOM spec now in terms of namespaces,

The only such example I know of is createElement() in XHTML documents.  Since 
your worries are about multi-language documents, where that's not a problem, I'm 
not sure where your "not following the DOM spec" claim comes from.

Received on Friday, 23 May 2008 18:39:46 UTC

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