title: How to do form validation first and then a confirmation popup call in wicket
body: <p>I am using ajax button and overridding the IAjaxCallDecorator getAjaxCallDecorator for javascript confirmation popup . when i click on button it calls this confirmation popup first then it does the form validation </p>
  
  <p>Do we have any way to first do the validation and then confirmation popup to save action ?</p>
  
  <p>Thanks in advance</p>