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Re: [css3-ui] scoping 'nav-index' (or tabindex) for large document use cases

From: Todd Kloots <kloots@yahoo-inc.com>
Date: Mon, 21 Nov 2011 09:43:10 -0800
To: "L. David Baron" <dbaron@dbaron.org>
CC: "www-style@w3.org" <www-style@w3.org>, "wai-xtech@w3.org" <wai-xtech@w3.org>
Message-ID: <92264590-5999-410F-B60C-E36BCBE8EE17@yahoo-inc.com>
The β€˜nav-index’ property seems interesting. Regarding directional focus navigation: Has any thought been given to being able to combine the the "id" and "target-name" values, such that authors would be able to specify the element inside the target frame? For example:

button#b4 {
  nav-down: fooframe#b1;
}

- Todd 

On Nov 20, 2011, at 3:22 PM, L. David Baron wrote:

> One of the issues that came up in the joint meeting between CSS and
> WAI Protocols & Formats at TPAC (on October 31) was the 'nav-index'
> property in http://dev.w3.org/csswg/css3-ui/#nav-index .  (This is
> the second of two messages (on different topics) to follow up on that
> discussion.)
> 
> There was a brief discussion that both 'nav-index' and tabindex are
> difficult for authors to use on large pages.  This was because of
> the impression that one of the use cases is likely to be doing a
> small amount of reordering of the tabbing order.  In particular, I
> think the following two use cases may have been brought up:
> 
>  (1) The author wants to say that the tabbing order (sequential
>  navigation order) should be assigned a certain way for large
>  sections of the page, each of which contain many navigable items.
>  For example, consider two div elements, each with a large number
>  of links in it, where the author wants all of the elements in the
>  second div to appear in the tabbing order before all of the
>  elements in the first div.  This currently requires assigning
>  tabindex, at a minimum, to all the tab-navigable elements in at
>  least one of the divs, if not all the tab-navigable elements in
>  the whole document.  It would be easier if there were a way to do
>  this by applying styles only to the divs (and perhaps their
>  container; see item (2)).
> 
>  (2) The author wants to say that the tabbing order (sequential
>  navigation order) should be assigned a certain way for a group of
>  elements within a specific container without having to specify the
>  order for everything else around them.  Right now, saying that two
>  links inside a div should be reached in the order opposite the
>  default one, but should appear in-sequence relative to the content
>  outside of the div, requires not only specifying 'nav-index' or
>  tabindex on the two links, but also on all the other links in the
>  document.
> 
> It seems useful to be able to address these use cases by assigning
> properties or attributes to only a few elements rather than having
> to do so globally.
> 
> (Note the desire for the tabbing order to be the way it is may be
> the result of positions assigned in the style sheet, which is why
> the tabbing order may belong in the style sheet as well.)
> 
> I don't recall concrete proposals for how to address these issues,
> but they seem likely to be worth addressing in css3-ui.
> 
> -David
> 
> -- 
> π„ž   L. David Baron                         http://dbaron.org/   𝄂
> 𝄒   Mozilla                           http://www.mozilla.org/   𝄂
> 

Received on Monday, 21 November 2011 17:44:22 GMT

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