custom validator jsf background or border component

[Doan Long]

.required { background: #ffcd00; color: white; }

<div class="col-right"> <h:inputText id="username" value="#{loginBean.username}" label="#{label['label.user']}" style="width:170px;" title="#{label['label.user']}"> <f:validator validatorId="vrequired"/> </h:inputText> </div>

@FacesValidator("vrequired")
public class Required implements Validator {

	@Override
	public void validate(FacesContext context, UIComponent component,
			Object value) throws ValidatorException {
		if (value == null || value == "") {
			if (component instanceof HtmlInputText) {
				String parenid = component.getParent().getClientId();
				HtmlInputText uiComponent = (HtmlInputText) context
						.getViewRoot().findComponent(
								parenid + ":" + component.getClientId());
				uiComponent.getAttributes().put("styleClass", "required");
				uiComponent.setOnfocus("");
			}
		}
	}
}

[Tim Holloway]