24482 2014-02-03 22:56:25 +0000 AX: AAPI mappings does not explicitly allow for UAs to determine presentational heuristics 2014-02-13 23:45:35 +0000 1 1 1 Unclassified HTML WG HTML a11y APIs (editor: Steve Faulkner, Cynthia Shelly) unspecified PC All NEW P2 normal --- 1 jcraig faulkner.steve jason jcraig mike public-html-admin public-html-bugzilla public-html-wg-issue-tracking surkov.alexander sideshowbarker+html-a11y-api oldest_to_newest 99645 0 jcraig 2014-02-03 22:56:25 +0000 AX: AAPI mappings does not explicitly allow for UAs to determine presentational heuristics. For example, <table> is not exposed as AXTable if WebKit can determine that it is a layout table versus a data table. Likewise, web authors use <ul> as layout lists in a bunch of places, too. The HTML AAPI should explicitly require these to be mapped to these semantic elements if the UA can determine they are not used in a semantically meaningful context. 99647 1 jason 2014-02-04 00:07:45 +0000 Is that something that might be better addressed in the document with one or more statements regarding AAPI behaviour generally? Perhaps it could fit well into the reworked Core and HTML5.1 User Agent Implementation Guide framework [1] proposed by Richard? [1] http://www.w3.org/WAI/PF/wiki/Outline_Core_User_Agent_Implementation_Guide 99648 2 jcraig 2014-02-04 00:12:26 +0000 Yes, I think a few sentences stating this somewhere is fine, but it may also be prudent to include a footnote or asterisk reference from a few elements in the list, particularly <ul>, <ol>, and <table>. It might also to be good to change a few references like: > li (parent is an ol or ul) to: > li (parent is a non-presentational ol or ul) 99778 3 surkov.alexander 2014-02-05 13:17:34 +0000 For the recored: in case of Firefox and layout tables we do create table related accessibles and expose table related interfaces but we set a layout flag on the table so AT knows this table is layout one. 100568 4 jcraig 2014-02-13 23:45:35 +0000 In the case of WebKit, we determine if it's a layout table, and if so, we expose it as a generic grouping container. http://trac.webkit.org/browser/trunk/Source/WebCore/accessibility/AccessibilityTable.cpp#L93