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Re: Suggestion for CSS3 selectors (fwd)

From: Andrew Fedoniouk <news@terrainformatica.com>
Date: Wed, 30 Apr 2008 23:21:01 -0700
Message-ID: <4819614D.5030706@terrainformatica.com>
To: fantasai <fantasai.lists@inkedblade.net>
CC: "Brian J. Fink" <desertowl23@gmail.com>, dbaron@dbaron.org, www-style@w3.org

fantasai wrote:
> Brian J. Fink wrote:
>> Well whether they decide to use < and ^ combinator notation or
>> :subject, :matches, and :has, I hope they reinsert SOME syntax we can
>> use BEFORE the spec gets promoted to candidate recommendation!
> Oh, it won't get added to the current Selectors module.
> This one is too close to REC, we aren't adding any features
> at this point. It'll be a candidate for the next level,
> Selectors Level 4 or whatever.
> ~fantasai

People, are you serious about all this?

What CPU would you use to process this:

:root < a:hover { color:sisyphean; font:boulder; }


This simply means recalculation of styles and layout of all DOM elements 
on simple a:hover. So is my question above.

Complexity of style resolution for *single* element using
containment selector is O(n), where n is a number of DOM elements in the 
whole tree. So resolving the whole DOM against single containment rule 
is O(n*n). This will not fly.

Andrew Fedoniouk.

Received on Thursday, 1 May 2008 06:21:41 UTC

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