/*
* JBoss, Home of Professional Open Source
* Copyright 2012, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.validator;
import java.io.Serializable;
import java.util.Map;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;
import org.richfaces.application.FacesMessages;
import org.richfaces.application.MessageFactory;
import org.richfaces.application.ServiceTracker;
import org.richfaces.component.AbstractSelectComponent;
import org.richfaces.component.util.MessageUtil;
/**
* Validates that Select component has sent valid value
*
* @author Lukas Fryc
*
*/
public class SelectLabelValueValidator implements Validator, Serializable {
public static final String ID = "org.richfaces.validator.SelectLabelValueValidator";
private static final long serialVersionUID = 2343817853927262660L;
public void validate(FacesContext facesContext, UIComponent component, Object valueAsObject) throws ValidatorException {
final AbstractSelectComponent select = (AbstractSelectComponent) component;
final String clientId = component.getClientId(facesContext);
final Map<String, String> requestParameterMap = facesContext.getExternalContext().getRequestParameterMap();
final String label = (String) requestParameterMap.get(clientId + "Input");
final String value = (valueAsObject == null) ? "" : valueAsObject.toString();
if (!valueWasDerivedOnClient(value, label, select)) {
throw new ValidatorException(createMessage(value, label, select, facesContext));
}
}
/**
* Returns true when value was determined based on manual input of label
*/
private boolean valueWasDerivedOnClient(String value, String label, AbstractSelectComponent select) {
if (!isEmpty(value)) {
return true;
}
if (isEmpty(label) || label.equals(select.getDefaultLabel())) {
return true;
}
return false;
}
/**
* Creates message for invalid select input
*/
private FacesMessage createMessage(String value, String label, AbstractSelectComponent select, FacesContext facesContext) {
String componentLabel = MessageUtil.getLabel(facesContext, select);
MessageFactory messageFactory = ServiceTracker.getService(MessageFactory.class);
return messageFactory.createMessage(facesContext, FacesMessage.SEVERITY_ERROR, FacesMessages.UISELECTONE_INVALID,
componentLabel);
}
private static boolean isEmpty(String value) {
return (value == null) || (value.length() == 0);
}
}