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LC Comment: Common event info from event()

From: John Boyer <boyerj@ca.ibm.com>
Date: Wed, 8 Oct 2008 13:55:43 -0700
To: www-html-editor@w3.org
Cc: www-html@w3.org, public-forms@w3.org
Message-ID: <OFB691BFB2.EDD5DC67-ON882574DC.00703513-882574DC.0072F712@ca.ibm.com>
On the Forms WG telecon today, Steven recommended it would be OK to submit 
the following as a last call comment (despite the late date).

XML Events 2 has an event() function, and it depends on the consuming 
language profile to provide specific context information properties that 
can be returned by the function.

However, there are at least five properties that XML Events 2 could offer 
to all consuming languages:

event('name') - the name of the event, e.g. xforms-insert (this is more 
for completeness, since often you will know this based on ev:event)

event('targetid') - returns ID of the event target

event('phase') - returns capture or bubble, depending on the phase the 
event is in when the event() function is invoked.

event('bubbles') - returns true or false depending on whether or not the 
event bubbles

event('cancelable') - returns true or false depending on whether  the 
event propagation can be stopped. 

I can't recall offhand whether the ability to stop the default action is 
also part of cancelable, but it should be accounted for as well.

The most important ones, in my view, seem to be targetid and phase.  I 
have hit a few cases at least where I want to do something *if* the event 
is going to a particular element or *if* it is in the capture phase.

Best regards,
John M. Boyer, Ph.D.
STSM, Interactive Documents and Web 2.0 Applications
Chair, W3C Forms Working Group
Workplace, Portal and Collaboration Software
IBM Victoria Software Lab
E-Mail: boyerj@ca.ibm.com 

Blog: http://www.ibm.com/developerworks/blogs/page/JohnBoyer
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Received on Wednesday, 8 October 2008 20:56:46 GMT

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