Re: Element.getComputedRole()

On Fri, Oct 17, 2014 at 8:47 AM, Alexander Surkov <
surkov.alexander@gmail.com> wrote:

>
>
> On Fri, Oct 17, 2014 at 1:30 AM, James Craig <jcraig@apple.com> wrote:
>
>> Alex Surkov wrote:
>>
>> >> 2) it doesn't make sense to expose accessible properties on every DOM
>> >> element (like on inaccessible DOM elements) and Element API approach
>> cannot
>>
>> ...
>>
>> >> I would design an Accessible interface instead following the
>> accessibility
>> >> desktop APIs.
>> >> interface Accessible {
>> >> string role;
>> >> };
>> >>
>> >> Then DOM Window object can be extended by:
>> >> interface Window {
>> >> Accessible getAccessibleFor(Node aNode);
>> >> };
>>
>>
>> The "'Accessible' adjective used as noun" makes for awkward API. What
>> about "AccessibleElement" or "AccessibilityElement" instead?
>>
>
> I'm fine with AccessibleElement
>
>
>>
>> interface AccessibilityElement {
>>   // Some of these might not need to be an accessors methods. Could be
>> string properties as you suggested.
>>   String computedRole();
>>   String computedLabel();
>>   Element element(); // reverse relationship back to DOM element, or null.
>>   AccessibilityElement accessibilityParentElement();
>>
>
> I see the hand of OS X Accessibility Protocol designer :) what about
> AccessibleElement parent;
>
>
>>   Array accessibilityChildren();
>> };
>> partial interface Element {
>>   AccessibilityElement accessibilityElement();
>> };
>>
>
> this also works
>

I forgot to mention that should be Node interface


>
>
>>
>>
>> Dominic wrote:
>>
>> > Sure, I think it's a good idea.
>> >
>> > How about getComputedAccessibleText next?
>> >
>> > In both Blink and WebKit I imagine we'll have to think about efficiency
>> when implementing this - typically we enable accessibility lazily and then
>> leave it on - at least for that page. We'd want to use the real
>> accessibility code to compute this, but then disable accessibility support
>> and clean up if it wasn't enabled previously.
>>
>> +Chris, who had similar concerns.
>>
>>
>>
>