- From: Paul Adam <paul.adam@deque.com>
- Date: Fri, 20 Nov 2015 09:56:54 -0600
- To: Sailesh Panchang <sailesh.panchang@deque.com>
- Cc: Andrew Kirkpatrick <akirkpat@adobe.com>, Gregg Vanderheiden RTF <gregg@raisingthefloor.org>, "jon.avila@ssbbartgroup.com" <jon.avila@ssbbartgroup.com>, John Foliot <john.foliot@deque.com>, GLWAI Guidelines WG org <w3c-wai-gl@w3.org>
- Message-Id: <F2B718D9-2BE1-49B3-896A-845C53D8455E@deque.com>
I’ve also seen examples where the input has title which does not fully match e.g. <input title=“First Name” aria-required=true> but the visible text label said <span>First Name*</span>. So the accessible name of the input does not have the “*” star/asterisks. It’s not a big negative impact to a user if they have ARIA support and hear the required attribute but they would not hear the * “star” so that seems like it could be fail. One reason it’s risky business not relating your labels to your inputs. Paul J. Adam Accessibility Evangelist www.deque.com > On Nov 20, 2015, at 9:42 AM, Sailesh Panchang <sailesh.panchang@deque.com> wrote: > > Andrew, > Your example is a certain "pass" but the one below may not be so clear: > If non-PD visible label is "Phone number (10 digits)" but title / > aria-label is "Phone number", or > non-PD visible label is "First name" and title or aria-label is "Name" > > Maybe a failure technique needs to be added to demonstrate such situations? > Best regards, > Sailesh Panchang > > > On 11/20/15, Andrew Kirkpatrick <akirkpat@adobe.com <mailto:akirkpat@adobe.com>> wrote: >> So, just as an actual example, here’s one possible bit of code that one >> might encounter: >> >> <p>What is your favorite color?</p> >> <input type="radio” name=“aa” value=“a1” title="What is your favorite >> color?: Red"> Red<br> >> <input type="radio” name=“aa” value=“a2” title="What is your favorite >> color?: Blue"> Blue<br> >> … >> >> And yes, one would be better off doing this, but we aren’t talking about >> what is better, we are talking about what is sufficient to meet the standard >> we have today, whether we like the standard or don't: >> <fieldset><legend>What is your favorite color?</legend> >> <label><input type="radio" value="a1"> Red</label> >> <label><input type="radio" value="a2"> Blue</label> >> ... >> </fieldset> >> >> What do people think, does the first, less-well coded example pass 1.3.1? >> >> Thanks, >> AWK >> >> Andrew Kirkpatrick >> Group Product Manager, Accessibility >> Adobe >> >> akirkpat@adobe.com >> http://twitter.com/awkawk >> http://blogs.adobe.com/accessibility >> >> From: CAE-Vanderhe >> Date: Thursday, November 19, 2015 at 20:21 >> To: Jonathan Avila >> Cc: John Foliot, "paul.adam@deque.com <mailto:paul.adam@deque.com><mailto:paul.adam@deque.com <mailto:paul.adam@deque.com>>", Andrew >> Kirkpatrick, WCAG >> Subject: Re: GitHub issue on checkbox and radio button labels >> >> Sorry to be cryptic >> >> by “relationship between the label and the control…” I just meant that >> this label went with that control. >> >> and yes - accessible names (if they are different than the visible names) >> should have the same meaning. >> >> Gregg >> >> >> >> On Nov 19, 2015, at 3:30 PM, Jonathan Avila >> <jon.avila@ssbbartgroup.com <mailto:jon.avila@ssbbartgroup.com><mailto:jon.avila@ssbbartgroup.com <mailto:jon.avila@ssbbartgroup.com>>> wrote: >> >>> the requirement is not that it be programmatically connected — but that >>> the relationship between the label and the control be programmatically >>> determinable if it can be visually determinable (for example). >> >> Gregg, I agree with you on the programmatically connected statement, >> however, I would very much like to get more information from you on what >> “relationship between the label and the control...” means. Does this mean >> the programmatic name must match – what criteria can we use to be sure the >> relationship is there other than the label text and the accessible name are >> similar or mean the same thing, and include all relevant details such as >> required state, etc. >> >> Thank you. >> >> Jonathan >> >> -- >> Jonathan Avila >> Chief Accessibility Officer >> SSB BART Group >> jon.avila@ssbbartgroup.com <mailto:jon.avila@ssbbartgroup.com><mailto:jon.avila@ssbbartgroup.com <mailto:jon.avila@ssbbartgroup.com>> >> >> 703-637-8957 (o) >> Follow us: Facebook<http://www.facebook.com/#%21/ssbbartgroup <http://www.facebook.com/#%21/ssbbartgroup>> | >> Twitter<http://twitter.com/#%21/SSBBARTGroup <http://twitter.com/#%21/SSBBARTGroup>> | >> LinkedIn<http://www.linkedin.com/company/355266?trk=tyah <http://www.linkedin.com/company/355266?trk=tyah>> | >> Blog<http://www.ssbbartgroup.com/blog <http://www.ssbbartgroup.com/blog>> | Newsletter<http://eepurl.com/O5DP <http://eepurl.com/O5DP>> >> >> From: Gregg Vanderheiden [mailto:gregg@raisingthefloor.org <mailto:gregg@raisingthefloor.org>] >> Sent: Thursday, November 19, 2015 1:49 PM >> To: John Foliot >> Cc: Paul Adam; Jonathan Avila; Andrew Kirkpatrick; GLWAI Guidelines WG org >> Subject: Re: GitHub issue on checkbox and radio button labels >> >> correct >> the requirement is not that it be programmatically connected — but that the >> relationship between the label and the control be programmatically >> determinable if it can be visually determinable (for example). >> >> g >> >> >> >> On Nov 19, 2015, at 1:36 PM, John Foliot >> <john.foliot@deque.com <mailto:john.foliot@deque.com><mailto:john.foliot@deque.com <mailto:john.foliot@deque.com>>> wrote: >> >> Paul Adam wrote: >>> >>> 1.3.1 Info and Relationships: Information, structure, and relationships >>> conveyed through presentation can be programmatically determined or are >>> available in text. (Level A) >>> >>> Is there a definition in WCAG for the term "or are available in text.” >>> >>> So a title attribute can create not just an accessible name 4.1.2 but also >>> a relationship connection 1.3.1? I could see the argument for >>> aria-labelledby as that’s an association but aria-label or title are not >>> connecting anything programmatically to the input. >> >> >> I think WCAG’s non-normative text is fairly clear here: >> >> From Understanding SC 1.3.1 - Examples of Success Criterion 1.3.1 >> ( >> http://www.w3.org/TR/UNDERSTANDING-WCAG20/content-structure-separation-programmatic.html#content-structure-separation-programmatic-examples-head <http://www.w3.org/TR/UNDERSTANDING-WCAG20/content-structure-separation-programmatic.html#content-structure-separation-programmatic-examples-head>) >> >> A form where the labels for the checkboxes can be programmatically >> determined: >> In a form, the labels for each checkbox can be >> programmatically determined by assistive technology. >> [JF: AT no time does SC 1.3.1 speak to “association” nor “connection” – >> simply AND EXCLUSIVELY programmatic determination] >> >> And then from Understanding SC 1.3.1 - Key Terms: >> (http://www.w3.org/TR/UNDERSTANDING-WCAG20/content-structure-separation-programmatic.html#key-terms <http://www.w3.org/TR/UNDERSTANDING-WCAG20/content-structure-separation-programmatic.html#key-terms>) >> >> programmatically determined (programmatically determinable) >> >> determined by software from author-supplied data provided in a way that >> different user agents, including assistive technologies, can extract and >> present this information to users in different modalities >> >> Example 1: Determined in a markup language from elements and attributes >> that are accessed directly by commonly available assistive technology. >> >> [JF: <label> is an element, aria is a collection of attributes. My read here >> is that either is acceptable, as long as they are ”accessed directly by >> commonly available assistive technology”. This is achieved via the >> Accessibility APIs where the Accessible Name is programmatically associated >> to the form input, and can then subsequently be programmatically >> determined.] >> >> >> Next, go here: >> http://www.w3.org/TR/html-aam-1.0/#accessible-name-and-description-calculation <http://www.w3.org/TR/html-aam-1.0/#accessible-name-and-description-calculation> >> (Mapping form inputs) >> HTML Accessibility API Mappings 1.0 >> 5.5 Other Form Elements >> Other Form Elements Accessible Name Calculation (This includes checkbox and >> radio button) >> >> 1. Use aria-labelledby >> 2. Otherwise use aria-label >> 3. Otherwise use label element >> 4. Otherwise use title attribute >> 5. If none of the above yield a usable text string there is no accessible >> name >> >> >> [JF: Translation: The various Accessibility APIs will try to determine the >> “Accessible Name” of a form input using the above 5 listed solutions, IN >> THAT ORDER. Once the Accessible Name has been determined, the processing >> stops. This then establishes the ‘relationship’ to the Accessibility API, >> and binds it “programmatically” - and subsequently meeting the WCAG >> requirement. “ >> >> In practice, using the title attribute is not a great idea, as many AT’s >> have elected to ignore that under most circumstances – the exception being >> when used in Forms. Even then, the combined specs agree that @title is the >> last resort: >> “…with HTML title attribute having the lowest precedence…” >> >> >> >> What Paul appears to be arguing for is better *usability*, and I think that >> none of us would disagree that improved usability is a worthwhile goal. But >> from my years of working with WCAG 2 I’ve never actually seen a Success >> Criteria mandate a specific behavior or even user pattern – in actual fact >> it seems that this was studiously avoided. This is also one of the reasons >> why many of the Success Criteria have multiple Techniques. >> >> Based on this, I would suggest the following: >> >> For best Usability, use the <label> element with your checkboxes, as it will >> make the associated (programmatically determinable) Accessible name also >> “interactive” (in that you can click on it with a mouse… if of course you >> are using a mouse). I’ll note here as well that all form inputs >> automatically are in the document’s tab-order, so *another* way of placing >> focus on a checkbox would be to tab to it (but again, WCAG doesn’t mandate >> that behavior either). >> >> For determining conformance to WCAG however, any of the four options noted >> above - use aria-labelledby, otherwise use aria-label, otherwise use label >> element, or use title attribute - will meet the Success Criteria’s >> requirement for “…labels for each checkbox can be programmatically >> determined by assistive technology.” >> >> JF
Received on Friday, 20 November 2015 15:57:32 UTC