- From: Detlev Fischer (TK) <detlev.fischer@testkreis.de>
- Date: Wed, 23 May 2018 12:04:45 +0200
- To: WCAG <w3c-wai-gl@w3.org>
I have some (late) second thoughts on the new SC Pointer Gestures. If we look at an example of drag-and-drop that has purpose of laying out elements on a two-dimensional plane (as in composing a diagram) https://salesforce-ux.github.io/dnd-a11y-patterns/#/canvas?_k=l04mef and this construct has been made keyboard-accessible (with added instructions for desktop screen reader users via aria-live) and also allows dragging with a single pointer (including touch), do we really mean there should be an extra mechanism to move the objects with single clicks / tabs? This seems to necessitate either - four discrete buttons at each side of a moveable object, or - a mechanism whereby the object can be selected / picked up and onscreen controls (arrows) are then available to move the selected element in discrete steps I fear we might have gone too far; I fear that adding extra functionality for draggable objects to afford single click/tap operation might decrease the usability / affordance overall, and may not be worth it (quite apart from adding a lot of complexity for developers). Even so, the current SC text seems to mandate exactly that, and would fail the example above. Since accommodations are possible, this does not seem to be a case for the 'essential' exception - but others may disagree. Thoughts? Detlev -- --------------------------------------------------------------- Detlev Fischer PhD Testkreis http://testkreis.de Telefon: +49-40-43 18 75-25 Mobile: +49-157 57 57 57 45 Fax: +49-40-43 18 75-45 E-Mail: detlev.fischer@testkreis.de Anschrift: Werderstr. 34, 20166 Hamburg Amtsgericht Hamburg HRB 58 167 ---------------------------------------------------------------
Received on Wednesday, 23 May 2018 10:05:17 UTC