Accessible Platform Architectures Working Group Teleconference

17 Aug 2016

See also: IRC log


Janina, Avneesh, Tzviya, JF, LJWatson, fesch, Charles_LaPierre, MichielBijl
fesch, JF


preview agenda with items from two minutes

<MichielBijl> Can someone pass me the webex link?

<fesch> scribe: fesch

janina: will identify folks

js: we have a pair of topics - HTML and dPub
... introduced herselft

lw: Leonie Watson , Web Platforms co-chair

rsL Rich CTO a11y IBM

fe: IBM co-lead SVG a11y tf

jf: Deque, lots of W3C

tz: DPub

cl: Charles from Benetech, dPub TF

avneesh: COO of DAISY Consortium, Chair of EPUB A11y TF

js: main topics aria-details.... will Defer Shane's item
... work in HTML on custom elements

ted: intuit a11y, joining Web Payments WG

TPAC Planning -- Details Discovery; Note & NoteRef

<tzviya> https://github.com/w3c/html/issues/561

js: we have a github tracker...

tz: discussion on extended descriptions - result aria-details for all users not just AT users
... aria-details exist, not a good way to hide them... need to come up with some approach for all users
... creating attributes/properties that make it displayable (toggles) - give user option of display/hide

lw: is the idea that someone has a icon (affordance) when closed, and a difference icon when open?
... are you asking for an visible icon (affordance) ?

js: part of the problem with details/summaries is we need a way to know what is behind the presentation is an extended description
... and we can trigger this on ...

rs: details element shows a button with a drop down icon
... they don't want a visible button as it disrupts the flow

tz: we don't usually dictate display.... but a button saying summary can be disruptive
... if we could have something that triggers the extended description, that would be ideal

<JF> "The aria-details attribute references a single element that provides more detailed information than would normally be provided by aria-describedby. Unlike aria-describedby, authors must ensure the content is not hidden and is included in a container that exposes the content to the user as it is expected that the assistive technology user navigate to the content to access it." -

<JF> https://www.w3.org/TR/wai-aria-1.1/#aria-details

js: there are reasons why we would want the presence of the details hidden

avneesh: may need to visually exactly replicate a printed book

lw: in the browser when the attribute is present, make the description available or show an affordance for the description

js: we didn't get that far, before the formal objection

lw: issue invisibility of longdesc

<clapierre> Longdesc only applies to images not other element… like tables etc..

rs: longdesc would actually take you to another page, details is in the same page
... that is a difference from longdesc

lw: browsers don't want to change their UI

jf: there is a disconnect between what Tziviya and avneesh .... and what is written

rs: publishers don't want javaScript in the page...

jf: is the content part of the page or fetched on demaind?

ts: there could be links to external objects as well

rs: can use iframes

js: in the spec examples of both in the page and external

cl: longdesc is only a reference by by images, and we need it referenced by any object.

lw: I meant with regard to browsers whether it is visible or hidden

ts: Avneesh said the default is descriptions are hidden, but in plain sight

lw: so you would still see a little icon?

ts: yes, but if it would be easy to turn off

<JF> Presumably the "icon" would also be stylable using CSS?

lw: I don't believe the default icon is styleable

avneesh: we don't want to see anything there

<LJWatson> <details> <summary proposedAttrib><img src="complex.png" alt="Complex picture"></summary> Detailed description here</details>

tz: the default should be the icon is there

<tzviya> https://www.w3.org/TR/wai-aria-1.1/#aria-details

tz: you can see examples in ARIA 1.1
... examples 1`7 and 18


lw: can someone put this discussion in github?

js: would be nice to obsolete longdesc... but how do we approach web platforms?

lw: we use the web platforms community group
... we are looking at a variant...

rs: we could have a 3rd state to let it be platform defined.

LW: This can be incubated within WPWG I think, rather than in the CG. I strongly suggest you tal to browser implementors to get feedback and test the water.

js: there are two cases that need to be made, first case is other users that need to see descriptions, 2nd case is why it should be in a browser

tz: reading system are based on browsers... thus need to start with browsers

js: if webkit supports it it doesn't mean it is in FireFox, do we need it in the rendering agent or all the way through?

lw: exit criteria - need 2 implementations in browsers not rendering agent

<richschwer> I need to drop

<JF> scribe: JF

LJW: hoping to have Tzviya to update the github comments (as requested by Leonie)

HTML Custom Elements Overview -- Leonie

LJW: Custom elements is part of web compnents (along with shadow dom)

they are closely related

Custom elements allows for the creation of new custom elements that currently do not exist

closely related to Shadow DOM

when you use somethnig like <audio> the browser creates the user interface

that is all in the shadow DOM

you don't actually see the pieces that are the audio player (buttons,etc. - that is all in the Shadow DOM

Custom Components will be reflected in the Shadow DOM

<Avneesh> a detail regarding reading systems, they use both the finished browser as well as rendering engines

Work happening on that spec at both W3C and WHAT WG - some differences still

active environment at this time

<Avneesh> Readium has a chrome pluggin that makes it into a reading system, while readium also have a rendering engine used for reading systems in iOS / Android platforms

clapierre: thought only Chrome supported custom elements, what is current status with other browsres?

LWJ: Chrome is certainly further ahead, but other browsers are catching up. Not sure about Edge or IE however

clapierre: Benetch is experimenting with Custom Elements in an eBook

some issues have surfaced in that work

LJW: interested in seeing that custom element as we continue to work on the details/summary thing - it may be useful for developing a proof of concept example
... aria will be critical when authors are creating these custom elements

The question is now, how to make ARIA extensibel to those authors

<tzviya> scribenick: tzviya

JF: in W3C we worry about standardizing.
... Is the issue to make a checklist for creating accessibility for custom elements?

LJW: Education will be a big issue
... A big issue with custom elements is that these specs are built to create new things
... These elements are often reusable and made to be packaged

JS: The interest is not necessarily to claim conformance to a specific spec

<LJWatson> https://github.com/domenic/html-as-custom-elements

LJW: There is conformance to WCAG, etc
... Dominic documented all the conformance issues in HTML in one document, so that developers could refer to it in one place
... One use case is that forms are so difficult to style. People create custom elements just to make forms look good.

Summary of Action Items

Summary of Resolutions

[End of minutes]

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Scribes: fesch, JF
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Default Present: Janina, Avneesh, Tzviya, JF, LJWatson, fesch, Charles_LaPierre, MichielBijl
Present: Janina Avneesh Tzviya JF LJWatson fesch Charles_LaPierre MichielBijl
Found Date: 17 Aug 2016
Guessing minutes URL: http://www.w3.org/2016/08/17-apa-minutes.html
People with action items: 

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