- From: David MacDonald <david100@sympatico.ca>
- Date: Wed, 9 Mar 2016 22:33:35 -0500
- To: Wayne Dick <wayneedick@gmail.com>
- CC: Jonathan Avila <jon.avila@ssbbartgroup.com>, James Nurthen <james.nurthen@oracle.com>, "w3c-wai-gl@w3.org" <w3c-wai-gl@w3.org>
- Message-ID: <BLU436-SMTP85AE49A2090AA193C7FC40FEB40@phx.gbl>
I would support that. On Wed, Mar 9, 2016 at 4:47 PM, Wayne Dick <wayneedick@gmail.com> wrote: > It really seem like there is no difference between focused and hover text > compared to normal link text. You frequently have need to read both. If you > are tabbing, the landing link might not even be on the same viewport. This > happens more frequently with large print. The letter of the criteria refers > to text and it is clear about what exceptions are allowed. Focus and hover > are not among the normative exceptions. I think WCAG WG engaged in a little > interpretive overreach on this one. It is such a divergence from normative > language. It just surprised me a lot. I just never imagined that focus and > hover text cold be interpreted as anything but text people need to read. > > That was a good little piece of archival research, Allister. Jon, I think > you should post an issue so we can rescind the interpretation. > > Wayne > > > > > > On Wed, Mar 9, 2016 at 10:02 AM, Jonathan Avila < > jon.avila@ssbbartgroup.com> wrote: > >> Ø the purpose of high contrast is to allow it to be read. This is true >> for both the mouse and keyboard because the person can simply read it >> before focusing on it. They then focus on it and then activate it. It >> WOULD be nice if they could confirm it when selected -- but even with lower >> contrast they can probably still read it once they already know what it >> says. But either way, they can move off of it and read it - then move on >> to it and select it. >> >> >> >> My response to Gregg is: First, sufficient contrast is not the same as >> “high contrast” – people with low vision are seeking the sufficient >> contrast requirement to apply. Saying that you can simply read it before >> focusing it seems like a phrase that was written by someone without a >> visual impairment and may not hold true in the real world people who live >> with vision loss. All too often I hear people say they understand what >> it’s like to be visually impaired when they take off their glasses. It’s >> not the same. >> >> >> >> If you take the example of screen magnification software where you see a >> small view of the screen and as you tab the view is focused to a link the >> user might not be able to get the text with sufficient contrast into the >> magnified view at all. Tabbing past or shift+tabbing might move the >> magnified view away from the text link. >> >> What grounds under the normative document nor authority does he have to >> carve out such an exclusion to WCAG? The normative text indicates that >> text and images of text must have a specific contrast ratio and changing >> that undermines the success criteria. >> >> >> >> Jonathan >> >> >> >> Jonathan Avila >> >> Chief Accessibility Officer >> SSB BART Group >> jon.avila@ssbbartgroup.com >> >> 703.637.8957 (Office) >> Visit us online: Website <http://www.ssbbartgroup.com/> | Twitter >> <https://twitter.com/SSBBARTGroup> | Facebook >> <https://www.facebook.com/ssbbartgroup> | Linkedin >> <https://www.linkedin.com/company/355266?trk=tyah> | Blog >> <http://www.ssbbartgroup.com/blog/> >> >> Check out our Digital Accessibility Webinars! >> <http://www.ssbbartgroup.com/webinars/> >> >> >> >> *From:* James Nurthen [mailto:james.nurthen@oracle.com] >> *Sent:* Wednesday, March 09, 2016 10:59 AM >> *To:* w3c-wai-gl@w3.org >> *Subject:* Re: Transient states >> >> >> >> So we are operating with complete information - this was Gregg's comment >> in the original issue >> >> GV: >> I would say that it would not be a failure for either a mouse or a >> keyboard focus. Here is the rationale. >> >> the purpose of high contrast is to allow it to be read. This is true for >> both the mouse and keyboard because the person can simply read it before >> focusing on it. They then focus on it and then activate it. It WOULD be >> nice if they could confirm it when selected -- but even with lower contrast >> they can probably still read it once they already know what it says. But >> either way, they can move off of it and read it - then move on to it and >> select it. >> >> The alternative would be to require that it have enough contrast either >> way-- but then there might not be much difference between selected and not >> selected -- which would be more confusing and unusable for the person with >> low vision. >> >> So I would say it was OK and in fact might be a better design than if it >> "selected" and "non-selected" both met the contrast rules. And I >> don't think it would technically fail the SC either. >> >> Regards, >> James >> >> On 3/9/2016 7:51 AM, Jonathan Avila wrote: >> >> Ø I’m not sure what you’d be raising a bug on though? The previous WG >> response? >> >> >> >> Not specifically a bug – but an issue with the interpretation. That is – >> I’d like another issue that overturns that decision. That way when this >> comes up – we can point to something that was discussed by the working >> group. >> >> >> >> Ø Perhaps undoing that means adding some text to the understanding page >> for 1.4.3/1.4.6 to make clear it applies to visible transitory states (e.g. >> focus & hover). >> >> >> >> Yes, some text in the non-normative understanding documents would be >> preferred. >> >> >> >> Jonathan >> >> >> >> Jonathan Avila >> >> Chief Accessibility Officer >> SSB BART Group >> jon.avila@ssbbartgroup.com >> >> 703.637.8957 (Office) >> Visit us online: Website <http://www.ssbbartgroup.com/> | Twitter >> <https://twitter.com/SSBBARTGroup> | Facebook >> <https://www.facebook.com/ssbbartgroup> | Linkedin >> <https://www.linkedin.com/company/355266?trk=tyah> | Blog >> <http://www.ssbbartgroup.com/blog/> >> >> Check out our Digital Accessibility Webinars! >> <http://www.ssbbartgroup.com/webinars/> >> >> >> >> *From:* Alastair Campbell [mailto:acampbell@nomensa.com >> <acampbell@nomensa.com>] >> *Sent:* Wednesday, March 09, 2016 3:54 AM >> *To:* Jonathan Avila; GLWAI Guidelines WG org >> *Subject:* Re: Transient states >> >> >> >> Hi Jonathan, >> >> >> >> I agree, the normative text doesn’t appear to make an exception for >> interactive or transitory states. (I was one of the people surprised by the >> previous response.) >> >> >> >> I’m not sure what you’d be raising a bug on though? The previous WG >> response? >> >> >> >> Perhaps undoing that means adding some text to the understanding page for >> 1.4.3/1.4.6 to make clear it applies to visible transitory states (e.g. >> focus & hover). >> >> >> >> Cheers, >> >> >> >> -Alastair >> >> >> >> >> >> *From: *Jonathan Avila <jon.avila@ssbbartgroup.com> >> *Date: *Tuesday, 8 March 2016 at 18:00 >> *To: *Alastair Campbell <acampbell@nomensa.com>, GLWAI Guidelines WG org >> <w3c-wai-gl@w3.org> >> *Subject: *RE: Transient states >> >> >> >> Alastair, thank you for bringing this up. >> >> >> >> While I can certainly understand the active state not being covered as it >> occurs between when the user performs the action and when the action occurs >> – focus states occur when the user tabs to an element and thus this is >> likely to be an issue for users who rely on the keyboard. Since we are >> talking about the contrast of text here – and the text is not inactive – I >> don’t understand how SC 1.4.3 and 1.4.6 do not apply. >> >> >> >> The focus and hover state do not appear to fall under the Incidental >> clause: Text or images of text that are part of an inactive user interface >> component, that are pure decoration, that are not visible to anyone, or >> that are part of a picture that contains significant other visual content, >> have no contrast requirement. >> >> >> >> Unless someone can point me to an documented normative exception for this >> I’ll be opening an new issue at minimum for the focus state. >> >> >> >> Jonathan >> >> >> >> *From:* Alastair Campbell [mailto:acampbell@nomensa.com >> <acampbell@nomensa.com>] >> *Sent:* Tuesday, March 08, 2016 9:05 AM >> *To:* GLWAI Guidelines WG org >> *Subject:* Transient states >> >> >> >> Hi everyone, >> >> >> >> There was an item last week on defining ‘transient states’ with regards >> to this: >> >> https://github.com/w3c/wcag/issues/157 >> >> >> >> The whole point may be moot now as Makoto Ueki pointed out that the group >> responded on this here: >> >> >> http://lists.w3.org/Archives/Public/public-comments-wcag20/2014Feb/0039.html >> >> >> >> >> So historically focus/hover/activate states are *not *covered by colour >> contrast in SC 1.4.3. That surprised a few people. >> >> >> >> In case this gets re-visited I tried to find a way of differentiating >> transient states (such as hover) from *really* transient states (such as >> active). >> >> >> >> In W3C terms these are generally referenced as 'Dynamic pseudo-classes’ >> and within those, 'user action pseudo-classes', but they are not defined by >> their timing element, and there is no differentiation from the CSS/HTML >> spec (that I can find). Both CSS and WCAG should apply across platforms, so >> definitions are difficult. >> >> >> >> The closest thing is 'formal activation state’ in the WhatWG doc here: >> >> >> https://html.spec.whatwg.org/multipage/scripting.html#in-a-formal-activation-state >> >> "An element is said to be in a *formal activation state* between the >> time the user begins to indicate an intent to trigger the element's >> activation behaviour" >> >> >> >> So there is a potential avenue, but as I noted above, the point may be >> moot if none of them are covered. >> >> >> >> Cheers, >> >> >> >> -Alastair >> >> >> >> >> >> >> >> -- >> Regards, James >> >> [image: Oracle] <http://www.oracle.com> >> James Nurthen | Principal Engineer, Accessibility >> Phone: +1 650 506 6781 <+1%20650%20506%206781> | Mobile: +1 415 987 1918 >> <+1%20415%20987%201918> | Video: james.nurthen@oracle.com >> Oracle Corporate Architecture >> 500 Oracle Parkway | Redwood Cty, CA 94065 >> [image: Green Oracle] <http://www.oracle.com/commitment>Oracle is >> committed to developing practices and products that help protect the >> environment >> > >
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Received on Thursday, 10 March 2016 03:34:13 UTC