/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.seam.faces.status;
import java.io.Serializable;
import java.util.LinkedHashSet;
import java.util.Set;
import javax.enterprise.event.Observes;
import javax.faces.application.FacesMessage;
import javax.faces.application.FacesMessage.Severity;
import javax.faces.event.PhaseEvent;
import javax.inject.Inject;
import org.jboss.seam.faces.context.RenderContext;
import org.jboss.seam.faces.event.PreNavigateEvent;
import org.jboss.seam.faces.event.qualifier.Before;
import org.jboss.seam.faces.event.qualifier.RenderResponse;
import org.jboss.seam.international.status.Level;
import org.jboss.seam.international.status.Message;
import org.jboss.seam.international.status.Messages;
import org.jboss.solder.logging.Logger;
/**
* Convert Seam Messages into FacesMessages before RenderResponse phase.<br>
* <p/>
* <p>
* TODO perform EL evaluation
* </p>
* <p/>
* <p>
* NOTE This class is using method parameter injection of Messages rather than field injection to work around GLASSFISH-15721.
* This shouldn't be necessary starting with Weld 1.1.1.
* </p>
*
* @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
* @author <a href="http://community.jboss.org/people/dan.j.allen">Dan Allen</a>
*/
public class MessagesAdapter implements Serializable {
private static final long serialVersionUID = -2908193057765795662L;
private transient final Logger log = Logger.getLogger(MessagesAdapter.class);
private static final String FLASH_MESSAGES_KEY = MessagesAdapter.class.getName() + ".FLASH_KEY";
@Inject
RenderContext context;
private abstract class MessageProcessor {
public void process(Messages messages) {
@SuppressWarnings("unchecked")
Set<Message> savedMessages = (Set<Message>) context.get(FLASH_MESSAGES_KEY);
Set<Message> combinedMessages = new LinkedHashSet<Message>();
if (savedMessages != null) {
log.debug("Picked up " + savedMessages.size() + " previously stored messages");
combinedMessages.addAll(savedMessages);
}
combinedMessages.addAll(messages.getAll());
if (!combinedMessages.isEmpty()) {
work(combinedMessages);
messages.clear();
}
}
protected abstract void work(Set<Message> combinedMessages);
}
void flushBeforeNavigate(@Observes final PreNavigateEvent event, Messages messages) {
new MessageProcessor() {
@Override
protected void work(Set<Message> combinedMessages) {
log.debug("Saving " + combinedMessages.size() + " status Messages to Flash Scope");
context.put(FLASH_MESSAGES_KEY, combinedMessages);
}
}.process(messages);
}
void convert(@Observes @Before @RenderResponse final PhaseEvent event, Messages messages) {
new MessageProcessor() {
@Override
protected void work(Set<Message> combinedMessages) {
for (Message m : combinedMessages) {
event.getFacesContext().addMessage(m.getTargets(),
new FacesMessage(getSeverity(m.getLevel()), m.getText(), m.getDetail()));
}
}
}.process(messages);
}
private Severity getSeverity(final Level level) {
Severity result = FacesMessage.SEVERITY_INFO;
switch (level) {
case INFO:
break;
case WARN:
result = FacesMessage.SEVERITY_WARN;
break;
case ERROR:
result = FacesMessage.SEVERITY_ERROR;
break;
case FATAL:
result = FacesMessage.SEVERITY_FATAL;
break;
default:
break;
}
return result;
}
}