Re: Tree sample code

I think George and Cynthia originally sent it out as an attachment, so  
I've uploaded their example here.

http://cookiecrook.com/test/aria/tree/microsoft_original/ariatree.htm


On Sep 7, 2008, at 6:58 AM, Jon Gunderson wrote:

> Is there a link to the Microsoft implementation of tree?
>
> Jon
>
>
> ---- Original message ----
>> Date: Sat, 6 Sep 2008 12:42:26 +0200
>> From: Aaron M Leventhal <aleventh@us.ibm.com>
>> Subject: RE: Tree sample code
>> To: Cynthia Shelly <cyns@exchange.microsoft.com>
>> Cc: George Young <gcyoung@microsoft.com>, "wai-xtech@w3.org" <wai-xtech@w3.org 
>> >, wai-xtech-request@w3.org
>>
>>  The graceful degredation might work if you put
>>  role="presentation" in the right places. Let's work
>>  together on that.
>>
>>  In general need to "circle the wagons" on ARIA
>>  implementations so that the same things work in both
>>  IE and Firefox.
>>  Can we all agree to try out our ideas in each
>>  other's implementations or at least make sure the
>>  ARIA user agent implementor's guide reflects the
>>  algorithm you will use when exposing the positional
>>  info to the AT.
>>
>>  If you can read between the lines, I'm honestly just
>>  worried that we're all doing different things
>>  without checking with each other and trying it out
>>  with the currently shipping implementations that
>>  already work, or even checking it against the ARIA
>>  spec or implementors guide. If everyone structures
>>  their test widgets slightly differently, any 2
>>  implementations will work differently. Authors will
>>  end up with a mess. IOW please just take this as me
>>  hoping we can go back and forth until we agree to do
>>  trees the same way, not to mention menubars, combo
>>  boxes and other complex composite widgets with
>>  potential structural choices.
>>
>>  - Aaron
>>
>>  From:    Cynthia Shelly
>>           <cyns@exchange.microsoft.com>
>>  To:      Aaron M Leventhal/Cambridge/IBM@IBMUS
>>  Cc:      George Young <gcyoung@microsoft.com>,
>>           "wai-xtech@w3.org" <wai-xtech@w3.org>
>>  Date:    09/06/2008 12:52 AM
>>  Subject: RE: Tree sample code
>>
>>    ------------------------------------------------
>>
>>  #1 is probably just do to our inexperience.  If
>>  itís not needed, thatís great.
>>
>>  So, #2 is the point of this code sample.  Use the
>>  native semantics as far as they go, and then
>>  progressively enhance with ARIA.  I feel pretty
>>  strongly that this type of graceful degradation
>>  pattern should be supported if we want accessibility
>>  in the broadest range of user agents.
>>
>>  As a side note, I am getting position and nesting
>>  info with IE 8 Beta 2 and JAWS 9.0.2169 with the
>>  virtual cursor turned off, and Iím also seeing it
>>  in MSAA description field in Inspect32.  The child
>>  count is incorrect, and I havenít yet figured out
>>  why.
>>
>>
>>  From: Aaron M Leventhal [mailto:aleventh@us.ibm.com]
>>  Sent: Tuesday, September 02, 2008 5:56 AM
>>  To: Cynthia Shelly
>>  Cc: George Young; wai-xtech@w3.org
>>  Subject: Re: Tree sample code
>>
>>  Here are my comments on Microsoft's tree sample:
>>  1. It uses aria-level, aria-setsize and
>>  aria-posinset when it doesn't need to.
>>  The idea is that authors only need to do that if the
>>  tree is not DOM complete -- iow it's loaded
>>  dynamically. When the entire tree structure is there
>>  the user agent is supposed to calculate that info
>>  from the structure.
>>  2. It uses <li><a/></li> constructs.
>>  This seems to be to allow for graceful degredation
>>  for non-ARIA clients. However, it means that the
>>  tree has list, list item and tree item objects mixed
>>  together, and no longer looks like a tree widget to
>>  current generation ATs. Neither current ATs nor
>>  Firefox 3 will process the structure and
>>  automatically provide info like the level, posinset
>>  and setsize.
>>  In general, the current implementors guide algorithm
>>  will not work with this tree. So either the tree
>>  needs to change, or the impl guide algorithm or
>>  both.
>>  What do you suggest?
>>  - Aaron
>>
>>  From:    Cynthia Shelly
>>           <cyns@exchange.microsoft.com>
>>  To:      "wai-xtech@w3.org" <wai-xtech@w3.org>
>>  Cc:      George Young <gcyoung@microsoft.com>
>>  Date:    07/07/2008 11:21 PM
>>  Subject: Tree sample code
>>
>>
>>
>>    ------------------------------------------------
>>
>>  As promised, here is a zip of the tree sample I
>>  demoíd at the face to face.
>>
>>  Tree.htm uses only nested unordered lists of links
>>  (with onclick handlers) to achieve tree behavior.
>>   JAWS in virtual cursor mode with medium verbosity
>>  does a good job of reading the list levels.
>>   Tab+enter opens and closes the tree levels.
>>
>>  Ariatree.htm is the same tree, with aria markup
>>  added to the links.  With virtual cursor turned off,
>>  list level information is exposed to MSAA.  This was
>>  tested with IE8 beta 1 and JAWS 9.  There are a few
>>  bugs in what is exposed to MSAA by IE in this early
>>  build, which will be fixed.
>>
>>  Iíve copied George Young, who wrote the original
>>  tree, to which I added ARIA for the CSUN demo.
>>   George is the best person to work with on combining
>>  this tree with any other samples that have more
>>  extensive keyboard handling features.[attachment
>>  "trees.zip" deleted by Aaron M
>>  Leventhal/Cambridge/IBM]

Received on Monday, 8 September 2008 00:14:51 UTC