- From: Joseph Scheuhammer <clown@alum.mit.edu>
- Date: Thu, 11 Feb 2016 15:10:35 -0500
- To: Bryan Garaventa <bryan.garaventa@ssbbartgroup.com>, Richard Schwerdtfeger <richschwer@gmail.com>
- Cc: Matt King <mck@fb.com>, ARIA Working Group <public-aria@w3.org>
Hi Bryan, On 2016-02-11 1:03 PM, Bryan Garaventa wrote: > The use of aria-controls in this case solves the issue by setting an explicit association, and aria-activedescendant works in identifying the referenced node that is active. There may still be a problem -- I am investigating. The Core-AAM describes an algorithm associated with aria-activedescendant that user agents MUST execute in order to mark the potential active descendants as focusable. In summary, when the user agent encounters a container with an aria-activedescendant attribute, the user agent must visit all descendants of the container and determine if they could be the target of the container's aria-activedescendant. The user agent must expose a focusable state for each such target, and only for those descendants that are targets. Here "descendants" means either a DOM descendant of the container, or one referenced by aria-owns. This procedure won't succeed for combobox containers if aria-controls is used instead of aria-owns. A way to patch this is to run the exact same algorithm but base it on aria-controls if aria-owns is not used. However, that requires buy-in from all user agents, and tests cases for the ARIA test harness. > I'm getting confused by the reference to modal dialogs. This isn't a modal dialog, it's a Listbox, and focus is never meant to leave the element that includes role=combobox. So what does the modal dialog have to do with it? Matt's new definition of combobox includes drop-downs that contain a grid, a treegrid, or a dialog instead of a listbox. When Rich discussed this with Freedom Scientific, they were willing to handle such cases, but only if the drop-down was modal. The thread starts here: https://lists.w3.org/Archives/Public/public-aria/2016Feb/0151.html -- ;;;;joseph. 'Die Wahrheit ist Irgendwo da Draußen. Wieder.' - C. Carter -
Received on Thursday, 11 February 2016 20:11:05 UTC