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Re: String Pseudo-Element

From: Lachlan Hunt <lachlan.hunt@iinet.net.au>
Date: Fri, 21 May 2004 01:12:55 +1000
Message-ID: <40ACCAF7.1090105@iinet.net.au>
To: W3C Style List <www-style@w3.org>



Anne van Kesteren (fora) wrote:
> 
>> I've been reading over the current CSS3 Selectors CR — specifically, 
>> at the :contains() pseudo class. It states that, since it's a 
>> pseudo-class it applies to the whole element that contains the text, 
>> not just the text within the element. So, I'm asking why is there no 
>> pseudo-element that does just select the text within?
> 
> There has been a lot of criticism on the ':contains()' pseudo class and
> it is likely to be removed. [1] and other resources. Probably some
> discussion behind closed (W3C) doors.

   Well that's a shame, it could have been useful, especially because I 
suspect that it's implementation could have helped with the 
implementation of something like a ::string() pseudo element.  However, 
even if it is removed from the current spec, that shouldn't prevent it 
from being revised and included in a future spec.

   Anyway, the main point of this email is that I've thought of another 
use where a ::string() pseudo element would be useful.  In the HTML 4.01 
spec, in the section on access keys [1], the last paragraph states the 
following:

   "...User agents should render the value of an access key in
   such a way as to emphasize its role and to distinguish
   it from other characters (e.g., by underlining it)."

Using something like the proposed ::string() pseudo-element, this could 
be styled with a rule like this:

label[accesskey]::string(attr(accesskey)):first-of-type {
   text-decoration: underline;
}

which would underline the first occurance of the accesskey within the label.

eg. <label accesskey="t">test</label>
would render like: _t_est

   Although that syntax probably isn't perfect, since I don't think it's 
currently possible to include a function within a selector like that, 
but anyway,  I think the concept of the ::string() is worth looking, 
even if the syntax isn't.


[1] http://www.w3.org/TR/html401/interact/forms.html#access-keys
-- 
Lachlan Hunt

http://www.lachy.id.au/
Received on Thursday, 20 May 2004 11:13:57 GMT

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