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ATAG2 proposal re: at least as prominent

From: Richards, Jan <jrichards@ocad.ca>
Date: Tue, 5 Apr 2011 12:58:53 -0400
To: AUWG <w3c-wai-au@w3.org>
Message-ID: <F2C77FB59A1A4840A01EF5F59B1826E20A3CE1E94A@ocadmail.ocad.ca>
Hi all,

I took an action to revisit "at least as prominent". Here's my reboot:

At least as prominent: 
For purposes of conformance to ATAG 2.0, a *user interface component* A is considered to be "at least as prominent" as a component B, if at least one of the following is true:
*(a) same container:* both components occur in the same container (e.g. list, pop-up menu, sub-menu, toolbar, dialog box, web page, etc.); or
*(b) same or less "opening" actions:* component A, or its container (e.g. list, pop-up menu, sub-menu, toolbar, dialog box, web page, etc.), becomes visible with less than or equal the number of "opening" actions required for component B (or its container) to become visible. Opening actions are user interface actions (e.g., keyboard selections, mouse clicks, etc.) that result in components, or component containers, becoming visible (e.g. opening a menu, opening a dialog box, etc.). Other actions are not counted (e.g., pressing tab to move focus).
Note: The term "visible" refers to what can be seen on the screen. 

Ed. Notes:
(a) so it is sufficient for the accessible templates (etc.) to be in the same list as the others. They don't need to be list first in the list because there are other relevant sort criteria, such as the type of template, author, save date etc.
(b) This is intended to cover comparisons where A and B are not in the same container, such as "Check Spelling" being placed under a "Text" menu and "Check Accessibility" being placed under an "Accessibility" menu. The term "visible" is necessary in order to practically compare things that are equally available to most authors, but may differ in terms of their order when accessed via the keyboard.


Where is it used?
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B.2.2.1 Accessible Option Prominence (WCAG): If authors are provided with a choice of authoring actions for achieving the same authoring outcome (e.g. styling text), then options that will result in accessible web content (WCAG) are *at least as prominent* as options that will not. (Level A)

B.2.4.2 Template Selection Mechanism: If authors are provided with a template selection mechanism, then both of the following are true: (Level AA) 
(a) Indicate: The selection mechanism indicates the accessibility status of templates (if known); and 
(b) Prominence: Any accessible template options are *at least as prominent* as other template options.

B.2.5.1 Pre-Authored Content Selection Mechanism: If authors are provided with a selection mechanism for pre-authored content other than templates (e.g. clip art gallery, widget repository, design themes), then both of the following are true: (Level AA) 
(a) Indicate: The selection mechanism indicates the accessibility status of the pre-authored content (if known); and 
(b) Prominence: Any accessible options are *at least as prominent* as other pre-authored content options.

B.4.1.4 Feature Prominence: Accessible content support features are *at least as prominent* as comparable features related to other types of web content problems (e.g. invalid markup, syntax errors, spelling and grammar errors). (Level AA)

APRIL 1 PROPOSAL:
-----------------
At least as prominent: 
For purposes of conformance to ATAG 2.0, an item A is considered to be "at least as prominent" as an item B if at least one of the following is true:
(a) item A occurs higher in the default reading order than item B; or
(b) both items occur in the same item container (e.g. menu of items, list of items, list of tabs, dialog of text entry fields) and if item B is always highlighted, then so is item A; or

CURRENTLY IN DRAFT:
-------------------
at least as prominent: 
For purposes of conformance to ATAG 2.0, item A is considered to be "at least as prominent" as item B if: 
(a) both items occur in the same item container (e.g. a menu for menu items, a list for list items, a dialog box for text boxes); [and]
(b) if item B is emphasized, then so is item A; and 
(c) item A occurs higher in the reading order or immediately follows item B.


*Thoughts? (Tim: What do you think of its testability?)*


Cheers,
Jan

-- 
(Mr) Jan Richards, M.Sc.
jrichards@ocad.ca | 416-977-6000 ext. 3957 | fax: 416-977-9844
Inclusive Design Research Centre (IDRC) | http://idrc.ocad.ca/
Faculty of Design | OCAD University
Received on Tuesday, 5 April 2011 16:59:20 GMT

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