title: Set checkbox as read-only using Primefaces
body: <p>I am currently using a <code>&lt;p:selectBooleanCheckbox /&gt;</code> and I was wondering if there is a way to make it read only.</p>
  
  <p>Basically, I would like you to be able to make it open up a sublist of check boxes and the original checkbox would only show the checkmark if any of the other checkboxes are checked.</p>
  
  <p>Any ideas on how to do this?</p>