Purchase Order: event() xpath function needs to be implemented

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What steps will reproduce the problem?
1. Open feature branch "new_samples/_samples/puchase-
order/purchaseOrder.html" in a browser
2. The event() function test upon an xforms-submit-error xml event for 
the 'error-type' property should work.
3.

What is the expected output? What do you see instead?
The following xforms:message should be displayed for a validation-error 
from an 'xforms-submit-error' xml event.
<xforms:message ev:event="xforms-submit-error" 
                          if="event('error-type')='validation-error'" 
                          level="modal">Some of the data on this form 
is <strong>invalid</strong>. Please correct errors and try again.
</xforms:message>

See spec details: http://www.w3.org/TR/xforms11/#fn-event

Please use labels to indicate the version, operating system and browser 
that you are using. Also, add some text below to provide additional 
information.
All supported browsers 

Original issue reported on code.google.com by wellsk0...@gmail.com on 24 Sep 2008 at 2:17

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Merle to take this on...

Original comment by wellsk0...@gmail.com on 25 Sep 2008 at 3:03

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The event() function is currently implemented but the submission code does not 
yet 
perform validation. 

Original comment by merle.st...@gmail.com on 20 Feb 2009 at 8:32

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Original comment by John.Boyer.PhD@gmail.com on 1 Mar 2009 at 6:40

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Original comment by John.Boyer.PhD@gmail.com on 6 Mar 2009 at 5:16

• Added labels: Iteration-20090306

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Original comment by John.Boyer.PhD@gmail.com on 13 Mar 2009 at 6:36

• Added labels: Iteration-20090313

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Last of blocking features fixed in r2421

Original comment by John.Boyer.PhD@gmail.com on 16 Mar 2009 at 1:04

• Changed state: Fixed