Subject: Re: bug#32348: 27.0.50; EWW/SHR: Please add support for hiding DOM nodes with aria-hidden=true

From: "T.V Raman" <[email-masked]>
Date: Wed, 8 Aug 2018 07:27:25 -0700

Nice, this is good enough for me. Another place to leverage
aria-hidden  might be in EWW's "readable" command. Note that in
general those nodes are shown on screen but are useless for the most
part -- and usually inoperable under EWW. As an example, articles from
the BBC for instance use these nodes to add buttons for "share via
messenger" etc.

Noam Postavsky writes:
 > tags 32348 + patch
 > quit
 > 
 > "T.V Raman" <[email-masked]> writes:
 > 
 > > aria-hidden as specified in the W3C/WAI ARIA 1.1 specification lets Web
 > > sites  mark DOM Nodes with aria-hidden=true -- the idea being that nodes
 > > that contain content relevant to script -- but not for direct user
 > > consumption can then be omitted by  accessibility tools such as
 > > screenreaders. Please add support for hiding such nodes -- either by
 > > default, or via a user customization.
 > 
 > As far as I can tell, hiding by default would not make sense, since such
 > nodes are intended to be hidden only from screen-readers, but visible
 > otherwise.  The following patch to add an option seems to work:
 > 
 > 
 > ----------------------------------------------------------------------
 > >From b56b24a1a40fdce7746ff0f81570b29c83309c12 Mon Sep 17 00:00:00 2001
 > From: Noam Postavsky <[email-masked]>
 > Date: Tue, 7 Aug 2018 20:40:56 -0400
 > Subject: [PATCH] Optionally skip rendering of tags with aria-hidden
 >  (Bug#32348)
 > 
 > * lisp/net/shr.el (shr-discard-aria-hidden): New option.
 > (shr-descend): Suppress aria-hidden=true tags if it's set.
 > * etc/NEWS: Announce shr-discard-aria-hidden.
 > ---
 >  etc/NEWS        |  2 ++
 >  lisp/net/shr.el | 10 +++++++++-
 >  2 files changed, 11 insertions(+), 1 deletion(-)
 > 
 > diff --git a/etc/NEWS b/etc/NEWS
 > index 2825bb9f59..068c48cabc 100644
 > --- a/etc/NEWS
 > +++ b/etc/NEWS
 > @@ -363,6 +363,8 @@ and its value has been changed to Duck Duck Go.
 >  'shr-selected-link' face to give the user feedback that the command
 >  has been executed.
 >  
 > +*** New option 'shr-discard-aria-hidden'.
 > +
 >  ** Htmlfontify
 >  
 >  *** The functions 'hfy-color', 'hfy-color-vals' and
 > diff --git a/lisp/net/shr.el b/lisp/net/shr.el
 > index edea7cb297..2599c3c727 100644
 > --- a/lisp/net/shr.el
 > +++ b/lisp/net/shr.el
 > @@ -68,6 +68,12 @@ shr-use-fonts
 >    :group 'shr
 >    :type 'boolean)
 >  
 > +(defcustom shr-discard-aria-hidden nil
 > +  "If non-nil, don't render tags with `aria-hidden=true' attribute."
 > +  :version "27.1"
 > +  :group 'shr
 > +  :type 'boolean)
 > +
 >  (defcustom shr-use-colors t
 >    "If non-nil, respect color specifications in the HTML."
 >    :version "26.1"
 > @@ -509,7 +515,9 @@ shr-descend
 >  					shr-stylesheet))
 >  	  (setq style nil)))
 >        ;; If we have a display:none, then just ignore this part of the DOM.
 > -      (unless (equal (cdr (assq 'display shr-stylesheet)) "none")
 > +      (unless (or (equal (cdr (assq 'display shr-stylesheet)) "none")
 > +                  (and shr-discard-aria-hidden
 > +                       (equal (dom-attr dom 'aria-hidden) "true")))
 >          ;; We don't use shr-indirect-call here, since shr-descend is
 >          ;; the central bit of shr.el, and should be as fast as
 >          ;; possible.  Having one more level of indirection with its
 > -- 
 > 2.11.0
 > 

-- 
Id: kg:/m/0285kf1 

-- 
Id: kg:/m/0285kf1