OnSubmitValidator.java

/*
 * Copyright 2011-2012 Blazebit
 */
package com.blazebit.blazefaces.validator;

import java.util.HashSet;
import java.util.Set;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.FacesValidator;
import javax.faces.validator.ValidatorException;

/**
 *
 * @author Christian Beikov
 */
@FacesValidator("onSubmitValidator")
public class OnSubmitValidator extends AbstractDelegatingValidator {

    private static final String PERFORM_VALIDATION = "performValidation";
    private static final String REQUIRED = "onSubmitRequired";
    private static final String FALSE = "false";

    @Override
    public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
        if (!FALSE.equals(context.getExternalContext().getRequestParameterMap().get(PERFORM_VALIDATION))) {
            Set<FacesMessage> messages = new HashSet<FacesMessage>();

            if (Boolean.TRUE.equals(component.getAttributes().get(REQUIRED))) {
                try {
                    lookup(context, "javax.faces.Required").validate(context, component, value);
                } catch (ValidatorException e) {
                    if(e.getFacesMessages() != null){
                        messages.addAll(e.getFacesMessages());
                    } else {
                        messages.add(e.getFacesMessage());
                    }
                }
            }

            if (component.getAttributes().get(VALIDATOR_ID) != null) {
                try {
                    super.validate(context, component, value);
                } catch (ValidatorException e) {
                    if(e.getFacesMessages() != null){
                        messages.addAll(e.getFacesMessages());
                    } else {
                        messages.add(e.getFacesMessage());
                    }
                }
            }

            // if there are any messages - throw validation exception
            if (!messages.isEmpty()) {
                throw new ValidatorException(messages);
            }
        }
    }
}