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Re: Text presentation of image maps (detailed review of Semantics)

From: Ian Hickson <ian@hixie.ch>
Date: Mon, 13 Aug 2007 07:52:26 +0000 (UTC)
To: Simon Pieters <simonp@opera.com>
Cc: public-html <public-html@w3.org>
Message-ID: <Pine.LNX.4.64.0708130749490.20226@dhalsim.dreamhost.com>

On Wed, 8 Aug 2007, Simon Pieters wrote:
> 
> The spec says in step 3 in the text presentation of image maps algorithm:
> 
>   Each remaining area element in areas represents a hyperlink. Those
>   hyperlinks should all be made available to the user in a manner
>   associated with the text of the img or input element.
> 
>   In this context, user agents may represent area and img elements with
>   no specified alt attributes, or whose alt attributes are the empty
>   string or some other non-visible text, in a user-agent-defined fashion
>   intended to indicate the lack of suitable author-provided text. (This
>   does not apply to input elements as they have default alt text.)
> 
> Why is the first requirement not a MUST instead of SHOULD?

Because features may limit what is actually shown (e.g. parental controls 
could filter out links to Web pages about the Teletubbies).


> Why is it appropriate to show UA-defined text for the <img> element in 
> case of missing alt or empty/non-visible alt for image maps? Isn't it 
> enough to just show the list of links that the <area>s represent where 
> the img element would have been?

I don't understand the difference.


> What is the default alt text for input elements?

"Submit Query", typically, in the user's language.

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Monday, 13 August 2007 07:52:36 GMT

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