[webkit-dev] CSSGroupingRule and a bit of refactoring?

Pablo Flouret pablof at motorola.com
Thu Dec 13 14:36:16 PST 2012

On Thu, 13 Dec 2012 14:12:06 -0800, Antti Koivisto <koivisto at iki.fi> wrote:

> We already have internal type corresponding to the new
> CSSGroupingRule, StyleRuleBlock. Technically refactoring the CSSOM like
> this would be fairly trivial.
> It is not clear to me what value this new type adds though. In JS you  
> don't
> really care if types have a common base as long as they share similar
> looking interface. Are there some concrete use cases?

Not particularly, no, i just saw a lot of copypasting around  
cssRules/insertRule/deleteRule/cssomwrappers. I don't feel strongly about  
this, so i can leave it alone, maybe post a patch later on if have the  
time, to see if it would add value.

Thanks for the input,


>   antti
> On Thu, Dec 13, 2012 at 3:41 AM, Pablo Flouret <pablof at motorola.com>  
> wrote:
>> Hello webkit folk,
>> I'm working on having @supports behave like a proper CSSSupportsRule  
>> [1].
>> In the css3-conditional spec, CSSSupportsRule inherits from a
>> CSSGroupingRule (CSSMediaRule does as well):
>> http://dev.w3.org/csswg/css3-conditional/#the-cssgroupingrule-interface.
>> I'm wondering if it's a good idea, as a first step, to do a bit of
>> refactoring and rip the stuff that's now in CSSGroupingRule from
>> CSSMediaRule (cssRules/insertRule/deleteRule), and have the supports
>> and media rules inherit from it.
>> Incidentally, i see at least WebKitCSSKeyframesRule and
>> WebKitCSSRegionRule also having similar but not quite identical
>> re-implementations of these functions, but i guess whether these ones
>> should also inherit from CSSGroupingRule might be a question for the
>> standards mailing lists first (in any case, they would potentially
>> benefit from such a refactoring).
>> Opinions / advice / potential problems?
>> Thanks!
>> [1] http://wkbug.com/104822
>> --
>> pablo flouret
>> motorola | webkit / browser team
>> _______________________________________________
>> webkit-dev mailing list
>> webkit-dev at lists.webkit.org
>> http://lists.webkit.org/mailman/listinfo/webkit-dev

pablo flouret
motorola | webkit / browser team

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