title: WizardNewFileCreationPage order
body: <p>I'm creating an Export wizard, including the possibility for the user to choose the format of the export and then to choose the location of the export with WizardNewFileCreationPage.</p>
  
  <p>To do so, I've created 3 pages, one extending wizardPage with a radio to set the next page to call, and 2 others pages pending the format and extending WizardNewFileCreationPage.</p>
  
  <p>It's working almost perfectly, my only problem concerns the "Finish" button, which requires to be clickable that all export format are fulfilled even if I overrided the function isPageComplete to limit the page validation only to the function validatePage.</p>
  
  <p>It looks like the function validatePage doesn't valid only it's own control but also all the control implemented by the class WizardNewFileCreationPage in the Wizard.</p>
  
  <p>Am I going wrong somewhere and does anybody know a solution ?</p>
  
  <p>Regards,
  Waldo</p>