[Accessibility] Secondary Carets needed?

Peter Korn Peter.Korn at Sun.COM
Thu Feb 18 15:25:37 PST 2010


This is an interesting question.  Today we have the ability via 
AccessibleText to indicate both a caret location, and also a selection 
(start, end).  When you have a range of text selected, one end of the 
selection has a caret and therefore keyboard manipulation of the 
selection (shift-arrow) grows/shrinks the selection by manipulating only 
one end of the selection range.

In a multi-touch environment, there is (presently) no keyboard mechanism 
for doing that at the same time on either end; you simply use your 
finger.  So... I'm not sure that we need a second caret until we have a 
keyboard-operable way of doing that sort of manipulation.


Peter Korn
Accessibility Principal

> Hi all,
> At first glance, it seems obvious that an AccessibleText would only 
> have one Caret.    However I have begun to question whether we will 
> soon need an ability to represent at least a second Caret.     
> Multi-touch technologies are allowing users to select with multiple 
> fingers.    For example, instead of defining rectangles by a 
> sequential first and a second corner selection, rectangles are defined 
> by simultaneous corner indications of two fingers.    The two finger 
> motions of pinch and enlarge are becoming commonplace in multi-touch 
> interfaces.    
> Thus I wonder how long it will be before there is a requirement of 
> text selection from simultaneous touching of multiple points, thus 
> creating a need for two or more caret references in a linear string of 
> text.
> Please excuse me if this is an old topic that has been soundly 
> considered.
> Regards,
> Brian
> Brian Cragun
> IBM AbilityLab Consultant
> Human Ability & Accessibility Center_
> __www.ibm.com/able_ <http://www.ibm.com/able> & _w3.ibm.com/able_ 
> <http://w3.ibm.com/able>
> W:(720)-663-2801    H:(507)288-2437
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