focusHandlerRegistration.removeHandler();
focusHandlerRegistration = null;
focusJs = js.trim();
if(!focusJs.isEmpty())
{
focusHandlerRegistration = super.getTextBox().addFocusHandler(new FocusHandler() {
@Override
public void onFocus(FocusEvent event) {
VkStateHelper.getInstance().getEventHelper().executeEvent(focusJs, event, true);
}
});