@Override
public void initialize(URL arg0, ResourceBundle arg1) {
btScan.disableProperty().bind(viewModel.scanAllowedProperty().not());
lbScan.textProperty().bind(viewModel.messageProperty());
tfScan.textProperty().bindBidirectional(viewModel.scannedValueProperty());
btScan.setDefaultButton(true);
}
@FXML
void onScan(ActionEvent e) {
viewModel.onScan();
}