protected Button createViewOriginalButton() {
// TODO : handle image zoom when no file is specified
if (file != null) {
final Group btnGraphic = createButtonGraphic(0.2);
final Button zoomButton = new Button();
zoomButton.setTooltip(new Tooltip(imageFullSizeToolTip));
zoomButton.setGraphic(btnGraphic);
zoomButton.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent e) {
Image image;