public void onBeforeSelection(BeforeSelectionEvent<Integer> bse) {
buttonClicked = true;
TabBar tb = (TabBar) bse.getSource();
cSelIdx = tb.getSelectedTab();
int selIdx = bse.getItem();
TabHolder th = findTab(selIdx, tb);
if (!th.button.isUseDropdown()) {
th.button.activate();
bse.cancel();
} else {
dropdown.clearHeaderBar();
}
}
public static <T> CellBeforeSelectionEvent<T> fire(
HandlerManager manager, Context context, T item) {
if (manager.isEventHandled(BeforeSelectionEvent.getType())) {
CellBeforeSelectionEvent<T> event = new CellBeforeSelectionEvent<T>(context, item);
event.setItem(item);
if (manager != null) {
manager.fireEvent(event);
}
return event;
}
return null;
}