// create a save as dialog
final FileChooser fileChooser = new FileChooser();
fileChooser.setDialogTitle(bundle.getString("export_message"));
fileChooser.setApproveButtonText(bundle.getString("export_button"));
fileChooser.setFileSelectionMode(FileChooser.FILES_ONLY);
fileChooser.setFileFilter(new XMLFileFilter());
if (source == null)
return null;
int returnVal = fileChooser.showOpenDialog(source);
if (returnVal == FileChooser.APPROVE_OPTION) {