int eventBoxY = eventInsertionHeight + HASHMARK_HEIGHT / 2;
eventLabel.getElement().getStyle().setPropertyPx(
"maxHeight", heightInPixels - eventBoxY);
final T data = timelineData.getData();
if (onClickBehavior != null && data != null) {
eventLabel.addStyleName("clickableTimelineEvent");
eventLabel.addStyleName("secondaryLink");
eventLabel.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
onClickBehavior.onClick(event, data);