code: public HandlerRegistration addInputHandler(JQMInputHandler handler) {
  	    if (handler == null) return null;
  	    return JQMHandlerRegistration.registerJQueryHandler(new WidgetHandlerCounter() {
              @Override
              public int getHandlerCountForWidget(GwtEvent.Type<?> type) {
                  return getHandlerCount(type);
              }
          }, this, handler, JQMComponentEvents.INPUT,
          JQMEventFactory.getType(JQMComponentEvents.INPUT, JQMInputHandler.class));
  	}
docs: Occurs on every entered/deleted symbol.
  <br><b>Warning!</b> Clear button does not raise this event, use
  addValueChangeHandler() to react on it.