/**
  * Create and add the unique page to the wizard
  *
  * @see org.eclipse.jface.wizard.Wizard#addPages()
  */
 public void addPages() {
   String description = Messages.CreateNattableFromCatalogWizard_0;
   page = new ChooseNattableConfigWizardPage(description, context);
   page.setTitle(Messages.CreateNattableFromCatalogWizard_1);
   page.setDescription(description);
   addPage(page);
 }
  /**
   * Enables the finish button when there's at least one selected configuration
   *
   * @see org.eclipse.jface.wizard.Wizard#performFinish()
   * @return
   */
  public boolean performFinish() {
    this.selectedConfigs = page.getSelectedConfigs();
    this.tableNames = page.getTableNames();
    if (this.selectedConfigs != null && this.tableNames != null) {
      if (this.selectedConfigs.size() > 0) {

        return true;
      }
    }
    return false;
  }