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Re: Slides of my WAI-ARIA presentation at SpainJS event

From: Steve Faulkner <faulkner.steve@gmail.com>
Date: Tue, 10 Jul 2012 10:04:04 +0100
Message-ID: <CA+ri+V=45TY3ScJN5rkKp4N2KA1bhpJdSsZN4XJxbHo3PYgeeg@mail.gmail.com>
To: Chaals McCathieNevile <w3b@chaals.com>
Cc: Bryan Garaventa <bryan.garaventa@whatsock.com>, Emmanuelle Gutiérrez y Restrepo <coordina@sidar.org>, WAI Interest Group <w3c-wai-ig@w3.org>, Ramón Corominas <listas@ramoncorominas.com>
Hi Chaals,

you wrote:

"Why? The specific mechanism for activation should be able to vary between
browsers*. Authors trying to guess which keys I have available on whatever
device is in front of me cause massive problems in general. It is true that
not all users know how to use their browser, but actively making it not
work isn't a very good solution and should only be done as a last resort."

There are standard keys for activating standard controls, which should work
pretty much everywhere.

a button has 2 common keys assigned, enter and space.

Some AT provide hints on how to use controls they recognise:I detailed
examples here, a while ago for a range of ARIA roles (which map onto
standard accessibility API roles:

http://www.paciellogroup.com/blog/aria-tests/user-input-widgets.html

design patterns for a range of controls are documented in the wai-aria
authoring guide: http://www.w3.org/WAI/PF/aria-practices/#aria_ex

So the effect of having a button that cannot be activated using the space
key as expected,  may be a problem.


regards
Stevef


On 9 July 2012 18:20, Chaals McCathieNevile <w3b@chaals.com> wrote:

> On Mon, 09 Jul 2012 16:31:03 +0200, Emmanuelle Gutiérrez y Restrepo
> <coordina@sidar.org> wrote:
>
>  Good point Bryan,
>>
>>  "Proper scripting is always necessary toensure functionality for users
>>> that cannot benefit from ARIA."
>>>
>>
>  It is important to note that, for all developers.
>>
>
> Indeed.
>
>
>  2012/7/9 Bryan Garaventa <bryan.garaventa@whatsock.com>
>>
>>> Actually I ran across this not too long ago, where I had a Span tag with
>>> tabindex=0 and role=link, and tried using just a click event to handle the
>>> keypress.
>>>
>>> This worked fine for screen reader users, but failed completely for
>>> keyboard only users not using a screenreader.
>>>
>>
> On what browser(s)? Did you file bugs, or do you know of them for the
> relevant browsers? Maybe you could add them to the a11ybugs list of things
> to annoy browser makers about...
>
>
>   ----- Original Message -----
>>>>  From: Steve Faulkner
>>>>
>>>
>  I think pretty much all browsers allow
>>>>>  activating click events with the keyboard, and will add things if you
>>>>> give them a tabindex. So adding specific keyboard >handling is probably
>>>>> redundant if you're just using click (mouseover, focus, and various other
>>>>> things are still not so good).
>>>>>
>>>>
>>>> I think you are right, but need to take into account keyboard behaviour
>>>> for things like buttons, which require activation on space key press as
>>>> well as enter key
>>>>
>>>
> Why? The specific mechanism for activation should be able to vary between
> browsers*. Authors trying to guess which keys I have available on whatever
> device is in front of me cause massive problems in general. It is true that
> not all users know how to use their browser, but actively making it not
> work isn't a very good solution and should only be done as a last resort.
>
> *for usability the basics should be the same where possible - e.g. Opera
> should fix the fact that they use the tab key for form-only navigation and
> ctrl-arrows for "tabbing" through all active things, because although their
> overall keyboard navigation implementation was light years more advanced
> than anyone else, when there is a convention as strong as the tab key it is
> unhelpful not to follow it)
>
> cheers
>
> Chaals
>
>  see http://www.paciellogroup.com/**blog/2011/04/html5-**
>>>> accessibility-chops-just-use-**a-button/<http://www.paciellogroup.com/blog/2011/04/html5-accessibility-chops-just-use-a-button/>for more details.
>>>>
>>>> regards
>>>> Steve
>>>>
>>>>
>>>>  On 9 July 2012 11:47, Chaals McCathieNevile <w3b@chaals.com> wrote:
>>>>
>>>>
>>>>
>>>>>   On Sun, 08 Jul 2012 22:29:30 +0200, Ramón Corominas <
>>>>> listas@ramoncorominas.com> wrote:
>>>>>
>>>>>
>>>>>
>>>>>  Hi all, and apologies for cross-posting.
>>>>>>
>>>>>> Last     Saturday I gave a presentation in the SpainJS event about
>>>>>> creating     accessible apps using WAI-ARIA. The idea was to show JS
>>>>>> developers that     accessibility is an essential component to achieve
>>>>>> quality coding, and the     potential of ARIA to create more accessible
>>>>>> apps.
>>>>>>
>>>>>> I've uploaded the     slides here:
>>>>>> http://ramoncorominas.com/**spainjs/<http://ramoncorominas.com/spainjs/>
>>>>>>
>>>>>
>>>>> Nice   :)
>>>>>
>>>>>
>>>>>> Comments, suggestions or corrections are welcome     (smile)
>>>>>>
>>>>>
>>>>> I think pretty much all browsers allow   activating click events with
>>>>> the keyboard, and will add things if you give   them a tabindex. So adding
>>>>> specific keyboard handling is probably redundant   if you're just using
>>>>> click (mouseover, focus, and various other things are   still not so good).
>>>>>
>>>>> I'd be interested in learning if that is not the   case...
>>>>>
>>>>> cheers
>>>>>
>>>>> Chaals
>>>>>
>>>>> --Chaals - standards   declaimer
>>>>>
>>>>>
>>>>
>>>>
>>>> -- with regards
>>>>
>>>> Steve Faulkner
>>>> Technical Director - TPG
>>>>
>>>> www.paciellogroup.com | www.HTML5accessibility.com |
>>>> www.twitter.com/stevefaulkner
>>>> HTML5: Techniques for providing useful text alternatives -
>>>> dev.w3.org/html5/alt-**techniques/<http://dev.w3.org/html5/alt-techniques/>
>>>> Web Accessibility Toolbar - www.paciellogroup.com/**
>>>> resources/wat-ie-about.html<http://www.paciellogroup.com/resources/wat-ie-about.html>
>>>>
>>>>
>>>
>>
>>
>
>
> --
> Chaals - standards declaimer
>



-- 
with regards

Steve Faulkner
Technical Director - TPG

www.paciellogroup.com | www.HTML5accessibility.com |
www.twitter.com/stevefaulkner
HTML5: Techniques for providing useful text alternatives -
dev.w3.org/html5/alt-techniques/
Web Accessibility Toolbar - www.paciellogroup.com/resources/wat-ie-about.html
Received on Tuesday, 10 July 2012 09:05:22 UTC

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