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Re: CSS module for 'binding' property and ':bound-element'

From: Ian Hickson <ian@hixie.ch>
Date: Thu, 12 Oct 2006 01:04:57 +0000 (UTC)
To: Matthew Raymond <mattraymond@earthlink.net>
Cc: www-style@w3.org
Message-ID: <Pine.LNX.4.62.0610120059490.18283@dhalsim.dreamhost.com>

On Wed, 11 Oct 2006, Matthew Raymond wrote:
> Ian Hickson wrote:
> > 
> > I wrote up a draft for a module that would define the 'binding' and 
> > ':bound-element' properties:
> > 
> >    http://dev.w3.org/cvsweb/~checkout~/2006/xbl2/css-module.html
> 
>    I'd like to see the value of "binding" as something like this:
> 
>    none | [ [ <uri> ] * <uri> ',' ]* <uri>

Hm, that's a good point.

I've changed it from accepting a comma-separated list to accepting a 
space-separated list. When we want to add fallback support, we can then 
use commas. Is that ok? I don't think we want to require fallback support 
at this early stage. It's probably better to keep things simple at the 
start.


>    The idea is that the property could support fallback like this:
> 
> | binding: url("b1.xbl") url("b1.htc"), url("b2.xbl") url("b2.htc");
> 
> In the example above, if the user agent supports HTML Components, but 
> not XBL, then the user agent will bind "b1.htc" and "b2.htc" to the 
> selected elements. Without such fallback support, it's difficult to see 
> how this property can be considered neutral with regard to binding 
> languages.

Well, IMHO you'd want the fallback at the outside for consistency with 
other such things in CSS, so it would look more like:

   binding: url("b1.xbl") url("b2.xbl"), url("b1.htc") url("b2.htc");

...but I agree with the idea.

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Thursday, 12 October 2006 01:05:13 GMT

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