Hi there,

I've created a first pass at an mx style post code validator. It still needs 
some work. It can be found in my white board area here:
http://svn.apache.org/viewvc/incubator/flex/whiteboard/jmclean/validators/

It supports either a single postcode format or an array of postcode formats. 
Formats are defined as strings consisting of N,A,CC,- or space where is N is a 
number, A is a letter, CC is country code (optional) and "-" or space for 
formatting. eg "NNNN" is a 4 digit postcode. "NNNN AA" is 4 digits, followed by 
a space followed by 2 letters.

It doesn't validate for ranges of numbers or exact letters. I've considered a 
way of setting a call back that calls a user defined function to do this.

Would anyone like to see this added to the SDK at some point in the future?

doValidate is a static method which required the formats array and the country 
code to stored in static variables. It may be possible to add an extra optional 
parameter to doValidate to get around this. Can anyone think of another way of 
doing it? The ZipCodeValidator gets around this by hard coding exact lengths 
and formats in the code but I don't thank that's viable for a more generic 
class like this.

For contribution like this what should the namespace be? mx.validators or 
org.apache.flex.mx.validators or something else?

Any interest in a similar spark version?

Anyone want to help out by reviewing the code, writing more unit test (a set of 
test for UK style postcodes would be useful) or any other way please do so.

Thanks,
Justin

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