*
* @param doBust true to bust the next click, false not to
*/
private void setBustNextClick(boolean doBust) {
if (doBust && bustClickHandler == null) {
bustClickHandler = Event.addNativePreviewHandler(new NativePreviewHandler() {
public void onPreviewNativeEvent(NativePreviewEvent event) {
if (Event.ONCLICK == event.getTypeInt()) {
event.getNativeEvent().stopPropagation();
event.getNativeEvent().preventDefault();
setBustNextClick(false);