- From: John Foliot <john@foliot.ca>
- Date: Mon, 13 Aug 2012 19:28:58 -0700
- To: "'Sam Ruby'" <rubys@intertwingly.net>, <public-html@w3.org>
- Cc: "'HTML Accessibility Task Force'" <public-html-a11y@w3.org>
Sam Ruby wrote: > > * Assertion of "harmful behaviors" is also not sufficiently > supported > by evidence. In particular, it makes a claim that has previously > been disputed, and without a single example of such markup. It is impossible to demonstrate harmful behaviors in a technology that has yet to surface - this is a ludicrous statement. Placing a <a href>Link</a> inside an @hidden container MUST still take tab focus for a non-sighted user and their Assistive Technology to interact with it, yet at the same time hides that focus from the sighted user: this is simple logic. Proving the harm of this is currently impossible due to lack of implementation anywhere: conversely however no one has been able to prove that this is NOT harmful. Allowing tab-focusable content to reside inside of a container that is specifically hidden to any other user, including a sighted, key-board only user, is harmful because that sighted user will lose track of their tab focus, with no other means of knowing where their cursor is. This is a direct contravention of a WCAG 2 AA Requirement: "2.4.7 Focus Visible: Any keyboard operable user interface has a mode of operation where the keyboard focus indicator is visible." http://www.w3.org/TR/2008/REC-WCAG20-20081211/#navigation-mechanisms-focus-v isible Therefore, implementation of this Change Proposal is a Direct and Willful Violation of the existing WCAG Specification, and the basis of My Formal Objection. I do not believe that the HTML5 WG should be violating such an important W3C Recommendation (one which countless countries and industries have based their entire on-line accessibility requirements - whether policies or legislation - upon). John Foliot
Received on Tuesday, 14 August 2012 02:29:37 UTC