Pause form submission

Content

Hi,

I have a business requirement that after form validation has been done and the normal tests have been passed to pop up a modal box if a date field is in a particular range.  I want this to pause the form submission and if the submitter clicks 'yes I want to continue' go ahead with normal form submission and if they cancel just stop there.

The approach I have taken is to extend the DateInput and update the validateValue() method to do the test and if required pop the modal.  However the form just continues to submit anyway.  I can stop the submission by returning false but that isn't what I want.  I considered doing that then restarting the submission but I don't know if that is possible.