- From: Terrill Thompson <tft@u.washington.edu>
- Date: Fri, 23 Jul 2010 11:55:08 -0700
- To: PFWG Public Comments <public-pfwg-comments@w3.org>
Comment 326: Popups - aria-haspopup Thanks. I accept this response. tt -----Original Message----- From: Janina Sajka [mailto:janina@a11y.org] Sent: Thursday, June 17, 2010 11:29 AM To: Terrill Thompson Cc: PFWG Public Comments Subject: Response to your comments on Accessible Rich Internet Applications (WAI-ARIA) 1.0 Comment 326: Popups - aria-haspopup Date: 2010-03-23 Archived at: http://lists.w3.org/Archives/Public/public-pfwg-comments/2010JanMar/0045.html Relates to: Accessible Rich Internet Applications (WAI-ARIA) 1.0 - aria-haspopup (property) <http://www.w3.org/TR/2009/WD-wai-aria-20091215/#aria-haspopup> Status: Alternate action taken ------------- Your comment: ------------- I've been struggling recently with how best to apply ARIA to the use case of a hidden informational popup that is made visible by user action. Netflix..com provides a good example of this type of behavior (hovering over a movie results in a popup being displayed), as does my own test page: http://terrillthompson.com/ncaa/test.html When a user triggers the pop-up, the desired effect is for screen readers to automatically alert the user that the popup has appeared, and temporarily move their focus to that popup. When they close the popup, their focus should return to the originating trigger element. aria-haspopup would seem by name to be an applicable property to the use case described above, but as I look at the description it isn't clear to me whether it's applicable or not. The definition first states "Indicates that the element has a popup context menu or sub-level menu." This would seem to suggest that this property only applies to menus. However, the next part of the definition ("This means that activation renders conditional content") seems to be defining "popup" more loosely. Currently, if a link includes aria-haspopup="true", NVDA identifies it as a "Submenu link". If this is correct implementation, that reinforces that aria-haspopup does not include popups that are not part of a menu system. -------------------------------- Response from the Working Group: -------------------------------- aria-popup is used only to to indicate a relationship to a pop up menu as platform accessibility APIs provide a property for it. The ARIA specification is very clear on this. A window appearing as the result of an action does not necessarily mean it is a pop up. For example, a dialog could be considered to be a pop-up give the terms you have described. However, what causes the screen reader to speak it is the fact that a dialog is created, it has a label, and there is an element with focus that needs to be announced. In your example, a properly implemented dialog would: - have a label which would the dialog would reference using aria-labelledby - have an aria-describedby reference to the message so that a screen reader would to read it when the dialog is launched - Place focus on the link so that the user has a point of reference within the dialog box. See the text on how to implement dialog boxes in the WAI-ARIA authoring practices guide: http://www.w3.org/WAI/PF/aria-practices/#kbd_layout and http://www.w3.org/WAI/PF/aria-practices/#modal_dialog and http://www.w3.org/WAI/PF/aria-practices/#aria_ex Also, while your example should be a dialog, you are mistaken in the assumption that the Netflix popup is the same. The Netflix example mentioned in the comment should be a popup or a tooltip, not a dialog. Justification: 1. It is triggered by focus or mouse hover, rather than by direct user interaction. 2. It should not achieve focus by default. If Netflix implemented its info popups as modal dialogs, the Netflix site would be almost very unusable to a screen reader user, because they would be forced to dismiss a dialog upon every step through a list of movies. This should either be a popup associated with aria-owns, and the AT should provide a way for the user to navigate the relationship, or it should be a tooltip associated with aria-owns.
Received on Friday, 23 July 2010 18:56:41 UTC