Re: noted 3 issues re: time/data (was Re: minutes for HTML WG f2f, 2011-11-04, part 1)

On Thu, 17 Nov 2011 20:02:51 +0100, Marat Tanalin | tanalin.com  
<mtanalin@yandex.ru> wrote:

> 17.11.2011, 22:45, "Tab Atkins Jr." <jackalmage@gmail.com>:
>>>>>   It would probably be useful if you provide a concrete descriptive  
>>>>> example showing how DATA element resolve this situation elegant and  
>>>>> nonconfusing way. Thanks.
>>>>  I... don't understand.  What situation?
>>>  Situation that you describe as quite abstract example of why  
>>> @itemscope and @itempropvalue would be confusing. Then it's logical  
>>> for you to provide a _concrete_ markup (HTML code) example where DATA  
>>> element is nonconfusing for marking up same data ('geo', etc.).
>>
>> I still don't understand.  The <data> element is irrelevant in the
>> situation you're talking about.  You would mark up such a thing as:
>
> Well, let's try to simplify and reformulate.
>
> There is DATA element proposal.
> There is @itempropvalue proposal.
>
> You say that @itempropvalue could be confusing.
>
> Then it would be useful that you provide a _concrete_ example where  
> @itempropvalue _is_ confusing while DATA element is _not_.

1.

<img src="pic.png" itemprop="img" itempropvalue="pic.jpg">

What is the value of the property "img"? Is it resolved as a URL or is it  
a plain text property? (src and href attributes are resolved as URLs in  
microdata, so itemValue would be something like  
"http://example.com/pic.png" if itempropvalue were not there.)

2.

<div itemscope itemtype=review>
   ...
   <p itemprop=location itemscope itemtype=geo  
itempropvalue="37.3610,-122.0250">
     Located at <span itemprop=lat>37.3610</span>, <span
itemprop=long>-122.0250</span>.
   </p>
</div>

What is the value of the property "location"? Is it a plain text property  
"37.3610,-122.0250" or the subitem with type "geo" and two properties  
"lat" and "long"?

None of these questions would arise with a <data> element, simply because  
you don't have the extra attribute to overload itemValue with.

-- 
Philip Jägenstedt
Core Developer
Opera Software