this.tooltip = new ImagesViewTooltip(gallery, gallery);
final ArrayList<Object> images = new ArrayList<Object>(store.getContents());
this.prepareImages(images);
gallery.addListener(SWT.SetData, new Listener() {
public void handleEvent(Event event) {
final GalleryItem item = (GalleryItem) event.item;
final GalleryItem parentItem = item.getParentItem();
if (parentItem == null) {