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Re: Techniques for WCAG 2.0 H45 longdesc: User agent support ( LC-2792)

From: Laura Carlson <laura.lee.carlson@gmail.com>
Date: Mon, 30 Sep 2013 12:51:37 -0500
Message-ID: <CAOavpvdTuqddE_9+Sq1+P6EtuGF6hb8ZQNYU03vFDqRBkn6SUg@mail.gmail.com>
To: public-comments-wcag20@w3.org, Charles McCathieNevile <w3b@chaals.com>, Dominic Mazzoni <dmazzoni@chromium.org>
Cc: Joshue O Connor <joshue.oconnor@cfit.ie>, Andrew Kirkpatrick <akirkpat@adobe.com>, John Foliot <john@foliot.ca>
Dear WCAG WG,

+ Dominic Mazzoni

Thank you very much for revising "H45 Using longdesc"'s UA section. To
the best of my knowledge your new proposed text [1] for H45 is
accurate. Chaals, do you concur?

One screen reader that is missing is ChromeVox. It has longdesc support.

Dominic, in July you had uploaded an initial draft Chrome
implementation for longdesc. [1] What is the ETA of longdesc landing
in Chrome? Perhaps the word "planned" can be removed from the phrase
"Chrome (planned)" in WCAG 2.0 Technique H45: Using longdesc.

Best Regards,
Laura

[1] "User Agent support for longdesc varies, but overall support is
improving. Screen readers such as JAWS, NVDA, and Window-Eyes support
longdesc, but Voiceover 4.0, Orca 2.32.0, and screen magnifier
Zoomtext 10.0 do not yet support the longdesc attribute. Browsers
including Internet Explorer, Firefox, Opera, and Chrome (planned) all
support longdesc."
http://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/H45.html#ua2.19.1
[2] http://code.google.com/p/chromium/issues/detail?id=224285#c26

On 9/22/13, akirkpat@adobe.com <akirkpat@adobe.com> wrote:
>  Dear Laura Carlson ,
>
> The Web Content Accessibility Guidelines Working Group has reviewed the
> comments you sent [1] on the Last Call Working Draft [2] of the Techniques
> for WCAG 2.0 published on 11 Jul 2013. Thank you for having taken the time
> to review the document and to send us comments!
>
> The Working Group's response to your comment is included below.
>
> Please review it carefully and let us know by email at
> public-comments-wcag20@w3.org if you agree with it or not before 2 Oct
> 2013. In case of disagreement, you are requested to provide a specific
> solution for or a path to a consensus with the Working Group. If such a
> consensus cannot be achieved, you will be given the opportunity to raise a
> formal objection which will then be reviewed by the Director during the
> transition of this document to the next stage in the W3C Recommendation
> Track.
>
> Thanks,
>
> For the Web Content Accessibility Guidelines Working Group,
> Michael Cooper
> W3C Staff Contact
>
>  1.
> http://www.w3.org/mid/CAOavpveFp6GsrEBFik9je+6b=KYpd0mBk0n-Hngz=Dg1Pyo2mA@mail.gmail.com
>  2. http://www.w3.org/WAI/GL/2013/WD-WCAG20-TECHS-20130711/
>
>
> =====
>
> Your comment on H45: Using longdesc:
>> 1. Title of the document
>>
>> Techniques for WCAG 2.0 H45 longdesc
>>
>> 2. Location within the document
>>
>> "User Agent and Assistive Technology Support Notes"
>> http://www.w3.org/WAI/GL/2013/WD-WCAG20-TECHS-20130711/H45.html#ua2.19.1
>>
>> 3. Concern
>>
>> User Agent support for longdesc varies, but overall support is
>> improving. The Techniques for WCAG 2.0 document should say that, as it
>> does for ARIA. H45 should provide a full listing of support. There is
>> now new and improved validator support and more widespread
>> implementation (e.g. in Chrome Vox, NVDA, Firefox). This will lead
>> authors to make fewer errors and users to experience longdesc.
>>
>> 4. Suggested change
>>
>> Please state that:
>>
>> User Agent support for longdesc varies, but overall support is
>> improving. A collection of tools that provide support for longdesc
>> exists.
>>
>> And provide a full listing of support:
>>
>> BROWSERS
>>
>> Opera, Firefox, Chromium, and Internet Explorer all support longdesc
>> DOM reflection.
>> http://people.opera.com/philipj/2011/01/23/longdesc/
>>
>> * As of Mozilla 25 Firefox has native support via the image context
>> menu.
>> http://www.mozilla.org/en-US/firefox/
>> https://bugzilla.mozilla.org/show_bug.cgi?id=877453
>> Firefox has accessibility API support.
>>
> https://mxr.mozilla.org/mozilla-central/source/accessible/src/html/nsHTMLImageAccessible.cpp
>> Support for prior versions is supplied via:
>>   * Longdesc Firefox Extension by Patrick H. Lauke, adds a "View Image
>> Longdesc" option to the image context menu that activates the link to
>> the long description.
>> https://addons.mozilla.org/en-US/firefox/addon/longdesc/
>>   * Longdesk 0.2 FireFox Extension by Anthony Ricaud, adds a link to
>> the longdesc under images that provides one.
>> https://addons.mozilla.org/en-US/firefox/addon/longdesk/
>>
>> * It is anticipated that Chrome will be providing native support. "Now
>> that the spec has been published I think we can add it." - Dominic
>> Mazzoni
>>
> http://groups.google.com/a/chromium.org/group/chromium-accessibility/browse_thread/thread/6542ed13863a8f2c#
>> Support for prior versions of Chrome is supplied via Longdesc plugin
>> by Chris Kennish, which "highlights and provides right-click access to
>> image long descriptions, where provided."
>>
> https://chrome.google.com/webstore/detail/longdesc/haohljalgapbacpkfefnmhiadanhejmb
>>
>> * iCab has native support of longdesc via a context-menu.
>> http://www.icab.de/
>>
>> * Opera 1010b1 to Blink has native support of longdesc. Exposition of
>> the longdesc is exposed by a right click on the image for which the
>> longdesc has been defined.
>> http://www.opera.com/docs/changelogs/mac/1010b1/#ui
>> Support for prior versions of Opera is supplied via:
>>   * TellMeMore Opera extension, which respects a web page's visual
>> design yet provides critical functionality. It will "Find things that
>> have more description available, and show them on demand. Where images
>> (or something else) have a longdesc attribute, the extension notifies
>> by changing its icon and title, and enables the user to see a list of
>> the descriptions available, in its popup. When the user selects an
>> item in the popup, a new window opens with the description in it."
>> https://addons.opera.com/en/extensions/details/tellmemore/
>>
>> * Internet Explorer (IE)
>>   * When used together with assistive technology such as Jaws, IE
>> makes longdesc accessible to the AT user.
>>   * Configuring Internet Explorer to Handle Longdesc - Adds a context
>> menu entry to extract the longdesc attribute value and have the page
>> navigate to its content for sighted users. by Sean Hayes.
>>
> http://blogs.msdn.com/b/accessibility/archive/2011/03/25/configuring-internet-explorer-to-handle-longdesc.aspx
>>   * Longdesc Linker for Internet Explorer 6 - Browser Helper Object
>> which adds a "Long Description" item to the context menu that IE uses
>> for images.
>> http://www.hackcraft.net/longdesclink/
>>
>> * Netscape 7.0 (rv:1.0.1 Gecko/20020823) supports the longdesc
>> attribute via the context menu.
>>
>> * Home Page Reader has native support of longdesc and is still used in
>> Japan for longdesc, even though it stopped being maintained years ago.
>>
>> * Long Description Favelet "announces the number of images with
>> longdesc attributes and provides links to the long description file in
>> each case." by James W. Thatcher. It works ubiquitously in Chrome,
>> FireFox, Internet Explorer, Safari, Opera, and iCab.
>> http://jimthatcher.com/favelets/
>>
>>
>> ASSISTIVE TECHNOLOGY
>>
>> The following assistive technology informs users that an image has a
>> long description, at which point the user has the option of reading
>> the description or skipping it.
>>
>> * Chromevox began supporting longdesc in version 1.26. It is announced
>> and can be activated with Cvox + C > D
>> http://www.chromevox.com/release_notes.html
>>
>> * NVDA will now announce the existence of the long description, and a
>> user can press NVDA+d to open it.
>> http://community.nvda-project.org/ticket/809#comment:5
>>
>> * JAWS Version 4.01 and up supports longdesc.
>> http://www.freedomscientific.com/fs_products/software_jaws401newfea.asp
>>
>> * Adaptive Multimedia Information System (AMIS)
>> http://www.daisy.org/projects/amis
>>
>> * AnyDaisy FF Extension
>> https://launchpad.net/daisyextension
>>
>> * LookOUT in combination with WebbIE.
>> http://www.screenreader.net/
>>
>> * Sense Reader Professional Edition v1.1.0.6 (KoreChromeVoxan)
>> http://www.haeppa.kr/?page=10
>>
>> * SuperNova/Hal
>> http://www.yourdolphin.com/
>>
>> * Thunder in combination with WebbIE.
>> http://www.screenreader.co.uk/product.php?shopprodid=1
>>
>> * Window-Eyes
>> http://www.gwmicro.com/Window-Eyes/Manual/HTML/advanced.html
>>
>> * Home Page Reader has native support of longdesc and is still used in
>> Japan for longdesc.
>>
>>
>> AUTHORING TOOLS
>>
>> The following authoring tools support the longdesc attribute.
>>
>> * AChecker
>> * AD Gallery
>> * Alt Text Checker
>> * Amaya
>> * A-Prompt
>> * ASP.NET
>> * BlueGriffon
>> * CKEditor
>> * Connexions Markup Language (CNXML)
>> * Cute Editor
>> * Docbook Docbook XSL Documentation (html.longdesc)
>> * Docbook XSL Documentation (html.longdesc.link)
>> * Dreamweaver, Creative Suite
>> * Drupal 7 - Drupal 7 Release Date, January 5, 2011.
>> * easyALBUM
>> * elRTE
>> * Expression Studio
>> * Expression Web
>> * gp|Easy CMS
>> * HERA
>> * iGraph-Lite
>> * Juicy Studio's Image Analyser
>> * jQuery Accessible Longdesc Plugin
>> * LongDesc Page Generator
>> * ObjectDescription
>> * Oxygen XML Editor
>> * RadEditor for ASP.NET AJAX
>> * Save As DAISY/MSWord Add-In
>> * simplepie
>> * SiteVision.se (CMS)
>> * TinyMCE
>> * WAVE
>> * Weblight
>> * WordPress longdesc Plugin Automatic longdesc to be added to WordPress
>> * Visual Studio and ASP.NET
>> * XStandard
>> http://www.d.umn.edu/~lcarlson/research/ld-ua.html#atools
>>
>> 4. Additional rationale for the comment
>>
>> The Techniques for WCAG 2.0 document should treat ARIA and longdesc
>> equitably.
>>
>> ARIA Techniques for WCAG 2.0 is cast in a positive light: "User Agent
>> support for WAI-ARIA varies, but overall support for WAI-ARIA is
>> improving."
>>
> http://www.w3.org/WAI/GL/2013/WD-WCAG20-TECHS-20130711/#wai-aria_ua_support
>>
>> In contrast H45: Using longdesc is cast in a negative light:
>> "Voiceover 4.0, NVDA 2012, Orca 2.32.0, and Zoomtext 10.0 (and their
>> earlier versions) do not support the longdesc attribute. Versions of
>> JAWS earlier than JAWS 4.01 and versions of WindowEyes earlier than
>> WindowEyes 4.5 do not support this attribute, but later versions do."
>> http://www.w3.org/WAI/GL/2013/WD-WCAG20-TECHS-20130711/H45.html
>> There is no mention of longdesc improving i.e., NVDA, Chromevox,
>> Firefox, the many extensions.
>>
>> Please correct this situation.
>
>
> Working Group Resolution (LC-2792):
> Thanks for your comment and suggested text. This information is useful, and
> will be incorporated into the 'User Agent and Assistive Technology Support
> Notes' found on
> http://www.w3.org/WAI/GL/2013/WD-WCAG20-TECHS-20130711/H45.html#ua2.19.1 to
> read:
>
> [DONE] User Agent support for longdesc varies, but overall support is
> improving. Screen readers such as JAWS, NVDA, and Window-Eyes support
> longdesc, but Voiceover 4.0, Orca 2.32.0, and screen magnifier Zoomtext
> 10.0 do not yet support the longdesc attribute. Browsers including Internet
> Explorer, Firefox, Opera, and Chrome (planned) all support longdesc.
>
> ----
>
>
>


-- 
Laura L. Carlson
Received on Monday, 30 September 2013 17:54:57 UTC

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