public FixedFileImportWizardPage1(
      String arg, PropsUI props, List<String> rows, List<FixedFileInputField> fields) {
    super(arg);
    this.props = props;
    this.rows = rows;
    this.fields = fields;

    setTitle(Messages.getString("FixedFileImportWizardPage1.DialogTitle"));
    setDescription(Messages.getString("FixedFileImportWizardPage1.DialogMessage"));
  }
 public boolean canFlipToNextPage() {
   int size = getSize();
   if (size > 0) {
     setErrorMessage(null);
     return true;
   } else {
     setErrorMessage(Messages.getString("FixedFileImportWizardPage1.ErrorMarkerNeeded"));
     return false;
   }
 }