Feedback from PFWG on Touch Events 13 September 2011 draft

The following are comments from the Protocols and Formats Working Group
on the 13 September 2011 Touch Events version 1 Last Call Working Draft
http://www.w3.org/TR/2011/WD-touch-events-20110913/. Authorization to
send these as PFWG comments is archived at
http://www.w3.org/2011/09/28-pf-minutes#item06.

Note that some PFWG members exempted themselves from our review of this
specification because of patent concerns at their companies.

1) If a Web application can deal with touch events, it can intercept
them, and the idea is that in this case no corresponding mouse events
will be dispatched. However, if the Web application is not specifically
written for touch input devices, it can react to the subsequent mouse
events instead. This can be a powerful paradigm, but it is not fully
described in this spec. The relation between touch events and mouse
events should be explained in more detail for authors who want to
achieve device independence.  There is a general need for a "primer"
document in the W3C space explaining the various DOM events and how they
relate to each other, also providing best practices of device-specific
and device-independent authoring.

2) Minor editorial issues with the spec:

- Section 3.1: For each of the attributes, the unit should be mentioned
(device pixels, CSS pixels, etc.)

- Section 7: The "preventDefault" method should be explained or listed
in the glossary.

For Protocols and Formats Working Group,
Michael Cooper, Team Contact
-- 

Michael Cooper
Web Accessibility Specialist
World Wide Web Consortium, Web Accessibility Initiative
E-mail cooper@w3.org <mailto:cooper@w3.org>
Information Page <http://www.w3.org/People/cooper/>