How to use

WizardPageSupport

in

org.eclipse.jface.databinding.wizard

/**
 * Connect the validation result from the given data binding context to the
 * given wizard page. Upon creation, the wizard page support will use the
 * context's validation result to determine whether the page is complete.
 * The page's error message will not be set at this time ensuring that the
 * wizard page does not show an error right away. Upon any validation result
 * change, {@link WizardPage#setPageComplete(boolean)} will be called
 * reflecting the new validation result, and the wizard page's error message
 * will be updated according to the current validation result.
 *
 * @param wizardPage
 * @param dbc
 * @return an instance of WizardPageSupport
 */
public static WizardPageSupport create(WizardPage wizardPage,
    DataBindingContext dbc) {
  return new WizardPageSupport(wizardPage, dbc);
}

  @Override
  protected void handleStatusChanged() {
    super.handleStatusChanged();
    boolean pageComplete = true;
    if (currentStatusStale) {
      pageComplete = false;
    } else if (currentStatus != null) {
      pageComplete = !currentStatus.matches(IStatus.ERROR
          | IStatus.CANCEL);
    }
    ((WizardPage) getDialogPage()).setPageComplete(pageComplete);
  }
}

WizardPage wizardPage = getContainer(WizardPage.class);
if (wizardPage != null) {
  WizardPageSupport.create(wizardPage, bindingContext);
} else {
  DialogPage page = getContainer(DialogPage.class);