title: Can you disable the back button in a JFace wizard?
body: <p>I'm writing a wizard for an Eclipse RCP application.  After doing some processing on a file and taking some user input, I don't want to let the user go back to make changes.  At this point they must either accept or reject the changes they are about to make to the system.</p>
  
  <p>What I can't seem to find is a method call that lets me override the buttons that display or the user's ability to hit the back button.  I'd prefer that it not be there or at least be disabled.</p>
  
  <p>Has anyone found a way to do this using the <a href="http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/api/org/eclipse/jface/wizard/package-summary.html" rel="noreferrer">JFace Wizard</a> and <a href="http://help.eclipse.org/help32/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/api/org/eclipse/jface/wizard/package-summary.html" rel="noreferrer">WizardPage</a>?</p>
  
  <p>Usability-wise, am I breaking wizard conventions?  Should I consider a different approach to the problem?</p>