- From: David Woolley <forums@david-woolley.me.uk>
- Date: Wed, 24 Oct 2007 08:02:03 +0100
- To: www-svg@w3.org
- CC: public-html@w3.org, public-xhtml2@w3.org, w3c-wai-pf@w3.org, w3c-html-cg@w3.org
Richard Schwerdtfeger wrote: > 2. Colon is not an option for text/html > We cannot use the colon instead of a hyphen, because a colon in > attribute names causes problems in IE. For example, you cannot use CSS Interestingly, though, IE is the strongest precedent for using : as as namespace separator in documents served as text/html. It is used for VML and for the Microsoft Office supplementary markup. > attribute selectors in IE when using a colon in the attribute name. Use Firstly, I don't actually see complaints that VML and Office markup is causing a problem in this respect, but also, I was under the impression that IE still didn't have strong support for attribute value based selectors (I've not seen them used in mainstream web site CSS), which I would have thought would be necessary for ARIA attributes to be useful in CSS. It could be an issue for scripting. > > *6. Currently proposed solutions for ARIA states and properties (not role)* > A. Use hyphenated property everywhere . > Pros: consistent > Cons: The issue that has been raised on this is that SVG already has > properties with hyphens in it. However, proponents of hyphen state that > SVG has no properties starting with "aria-" so it is not a real problem, This means that either ARIA attributes have to be part of the core of XHTML, SVG, etc., or that you have the ugly situation of having two different syntaxes for namespacing co-exist, one of which is only available to official standards, because it cannot guarantee global uniqueness otherwise. > D. For long term consideration: Should the W3C consider create a > collection of cross-cutting attributes which may be used across > renderable markup languages without namespaces. e.g. (Role, ARIA, RDF/A, > etc.) For the long term, shouldn't one be assuming that text/html browsers will support XML namespace notation in CSS; the major one already supports it in the HTML. (Or that the world will move to XML - although it is looking less and less likely that that will happen.) [ This may fail or be delayed on lists other than www-svg. ] -- David Woolley Emails are not formal business letters, whatever businesses may want. RFC1855 says there should be an address here, but, in a world of spam, that is no longer good advice, as archive address hiding may not work.
Received on Wednesday, 24 October 2007 07:02:24 UTC