RE: Input bound to boolean node and incremental

Hi Leigh,

Actually, the wording in Section 4.6.1 is *very* carefully chosen to 
permit the UI control implementation to decide how incremental="false" is 
handled.
When not set to incremental="true", events are not required to be 
dispatched, which is different from saying that events are not dispatched.

This means that the xsltforms implementation may technically be within 
spec, but it is also plain that once a specific UI control is mapped to an 
abstract control like xf:input, the UI controls should behave according to 
commonly known UX expectations for that kind of control. 

So, I think it would reasonable to say that xf:input mapped to input 
should set the data node value when the checkbox is clicked.  This would 
also be in accord with saying that the user has "activated" the control by 
clicking on it or using the keyboard selection mechanism (usually the 
space bar). This means of activation recognizes that a checkbox is a 
"button-esque" kind of xf:input.  By comparison, a single line textual 
input control can be also be "activated" by hitting enter within it, and 
the value will change without the input control losing the focus or having 
the user navigate away from it.

Cheers,
John M. Boyer, Ph.D.
IBM Distinguished Engineer, Interactive Web Applications and Documents 
IBM Lotus Forms Architect
Workplace, Portal and Collaboration Software
IBM Canada Software Lab, Victoria
E-Mail: boyerj@ca.ibm.com 

Blog: http://www.ibm.com/developerworks/blogs/page/JohnBoyer
Blog RSS feed: 
http://www.ibm.com/developerworks/blogs/rss/JohnBoyer?flavor=rssdw





From:
"Klotz, Leigh" <Leigh.Klotz@xerox.com>
To:
<public-forms@w3.org>
Cc:
"support xsltforms" <xsltforms-support@lists.sourceforge.net>
Date:
06/15/2010 10:43 AM
Subject:
RE: Input bound to boolean node and incremental



Test case: 
http://xformstest.org/klotz/2010/06/input-boolean-incremental/test.xml 

-----Original Message-----
From: Klotz, Leigh 
Sent: Tuesday, June 15, 2010 10:26 AM
To: public-forms@w3.org
Cc: support xsltforms
Subject: Input bound to boolean node and incremental

According to
 http://www.w3.org/TR/xforms11/#sequence-for-input

xf:input change the value until you navigate off, unless you use 
incremental="true".

If the bound node is of type xsd:boolean, however, most desktop browser 
XForms processors will render the control as a checkbox.
So, if you check the checkbox, nothing happens until you navigate off.

I've not seen implementations with the behavior that checkboxes don't work 
until you tab off before, but now xsltforms is exhibiting it.
A quick read of the XForms 1.1 Rec shows that it may be the spec-correct 
behavior.

We had a similar situation with select1, and we fixed it by saying that 
the default value of attribute incremental for select1 is true:

 http://www.w3.org/TR/xforms11/#sequence-for-select1

How can we fix it for input bound to boolean?  It doesn't seem like we can 
easily say that the default value of attribute incremental for input bound 
to boolean is true.

Authors might not know whether a control is bound to a boolean or not; for 
example, now that we allow non-homogeneous repeats:
  <repeat nodeset="*"><input ref="value"><label 
ref="../label"></label></input>

Leigh.