Re: Target Size SC

Sending out my response to the broader group.

I wonder if we already have an "out" for the text link conundrum using:
User Agent Control - The appearance of the target is determined by the 
user agent and is not modified by the author. 

So, here's the scenario. If we just treat links as user agent controls, 
just like an <input>, then I think maybe we gain all we need through the 
'not modified by author' language.

Any time I've ever seen a link used as some kind of replacement for a 
control, the author has ALWAYS modified the appearance. They don't want it 
to look like a straight old underlined text link with a focus rectangle 
around it because that doesn't jibe with the UI. So they make it 1) look 
like a button or 2) look like a menu item or even 3) look less like a link 
and more like a text control (a la iOS).

Yes, there is the possibility that someone will just leave it as a 
thoroughly stock html link, but in my experience anything that is designed 
to be a control will be affected -- the Designers just won't let it exist 
in stock form. Conversely links that just fall inside text documents will 
be less likely to be affected (but still could be).

We'd end up with:
Level AA The size of the target for pointer inputs is at least 44 by 22 
CSS pixels except when: 

Essential - A presentation of target is essential to the information being 
conveyed;
Equivalent - The target is available through an equivalent link or control 
on the same page that is at least 44 by 22 CSS pixels;
Text Links - The target is a text link with a size that is at least 22 
pixels in width or height unless it is in a block of text;
User Agent Control - The appearance of the target is determined by the 
user agent and is not modified by the author.

We add in wording to the Understanding document that makes it clear that 
any alteration of user interface controls through suppression of 
appearance, such as removal of underlining from links, or styling user 
agent controls with CSS immediately makes the SC applicable. We may need 
some language on links saying that changing only link text color for 
visited and unvisited links is an exception. That addresses the block of 
text situation, in the case where link color is modified but nothing else.

This is much the same tactic we took for User Interface Component Contrast 
(and which was revised into Graphics Contrast:
The visual presentation of the following have a contrast ratio of at least 
3:1 against adjacent color(s): (Level AA)
User Interface Components
Visual information used to indicate states and boundaries of active user 
interface components, except where the appearance of the component is 
determined by the user agent and not modified by the author.

Thoughts?

Michael Gower
IBM Accessibility
Research

1803 Douglas Street, Victoria, BC  V8T 5C3
gowerm@ca.ibm.com
voice: (250) 220-1146 * cel: (250) 661-0098 *  fax: (250) 220-8034



From:   Kathy Wahlbin <kathyw@ia11y.com>
To:     Michael Gower <michael.gower@ca.ibm.com>, "Repsher, Stephen J" 
<stephen.j.repsher@boeing.com>
Date:   2017-11-21 09:09 AM
Subject:        RE: Target size



Hi Mike –
 
Can you take a look at the language I added to the WIKI?  Any suggestions 
on how to change this to address the concerns?
 
See the section “Alternative Wording”
 
https://www.w3.org/WAI/GL/wiki/WCAG_2.1/targets#SC_revision_discussed_on_11.2F21_call_.28Kathy.27s_suggestion.29

 
 
Kathy
CEO & Founder
Interactive Accessibility
 
T (978) 443-0798  F (978) 560-1251  C (978) 760-0682
E kathyw@ia11y.com 
www.InteractiveAccessibility.com
 
NOTICE: This communication may contain privileged or other confidential 
information. If you are not the intended recipient, please reply to the 
sender indicating that fact and delete the copy you received. Any 
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From: Michael Gower [mailto:michael.gower@ca.ibm.com] 
Sent: Tuesday, November 21, 2017 12:01 PM
To: Repsher, Stephen J <stephen.j.repsher@boeing.com>; Kathy Wahlbin 
<kathyw@ia11y.com>
Subject: Target size
 
I'd be happy to participate in trying to crack this nut again.
My two bits is that I'm hearing two different objectives:
1) make Control target sizes a minimum size (just like in mobile guidance)
2) make all links a minimum target size

I think we can achieve #1 in the language with blocks of text as defined, 
and make #2 best practices and advisory techniques.

I suggest we discuss objectives at this level of abstraction to agree on 
scenarios, and then try to tweak language to meet those different scenario 
objectives.


Michael Gower
IBM Accessibility
Research

1803 Douglas Street, Victoria, BC  V8T 5C3
gowerm@ca.ibm.com
voice: (250) 220-1146 * cel: (250) 661-0098 *  fax: (250) 220-8034


Michael Gower
IBM Accessibility
Research

1803 Douglas Street, Victoria, BC  V8T 5C3
gowerm@ca.ibm.com
voice: (250) 220-1146 * cel: (250) 661-0098 *  fax: (250) 220-8034



From:   Kathy Wahlbin <kathy@interactiveaccessibility.com>
To:     Andrew Kirkpatrick <akirkpat@adobe.com>, Joshue O Connor 
<joshue.oconnor@cfit.ie>, "w3c-wai-gl@w3.org" <w3c-wai-gl@w3.org>
Date:   2017-11-21 09:10 AM
Subject:        Target Size SC



Based on the feedback on today’s call, I took a stab at modifying the 
target size success criteria language for AA and AAA.  See the section 
“Alternative Wording” on the WIKI
 
https://www.w3.org/WAI/GL/wiki/WCAG_2.1/targets#SC_revision_discussed_on_11.2F21_call_.28Kathy.27s_suggestion.29 

 
 
Kathy
CEO & Founder
Interactive Accessibility
 
T (978) 443-0798  F (978) 560-1251  C (978) 760-0682
E kathyw@ia11y.com 
www.InteractiveAccessibility.com
 
NOTICE: This communication may contain privileged or other confidential 
information. If you are not the intended recipient, please reply to the 
sender indicating that fact and delete the copy you received. Any 
disclosure, copying, distribution or action taken or omitted to be taken 
by an unintended recipient in reliance on this message is prohibited and 
may be unlawful.