code: private void fireUserInputChange() {
  		if (!internallySettingText && (this.listeners != null)) {
  			for (Iterator it = this.listeners.iterator(); it.hasNext();) {
  				UserInputListener userInputListener = (UserInputListener) it.next();
  				userInputListener.update(this);
  			}
  		}
  	}
docs: Fire an event to all UserInputListeners.