org.primefaces.behavior.ajax.AjaxBehaviorListenerImpl Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* 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.primefaces.behavior.ajax;
import java.io.Serializable;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.el.ELContext;
import javax.el.MethodExpression;
import javax.el.MethodNotFoundException;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.AjaxBehaviorEvent;
import javax.faces.event.AjaxBehaviorListener;
public class AjaxBehaviorListenerImpl implements AjaxBehaviorListener, Serializable {
private static Logger LOG = Logger.getLogger(AjaxBehaviorListenerImpl.class.getName());
private MethodExpression listener;
private MethodExpression listenerWithArg;
public AjaxBehaviorListenerImpl() {}
public AjaxBehaviorListenerImpl(MethodExpression listener, MethodExpression listenerWithArg) {
this.listener = listener;
this.listenerWithArg = listenerWithArg;
}
public void processAjaxBehavior(AjaxBehaviorEvent event) throws AbortProcessingException {
FacesContext context = FacesContext.getCurrentInstance();
final ELContext elContext = context.getELContext();
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("Try to invoke listener: " + listener.getExpressionString());
}
try {
listener.invoke(elContext, new Object[]{});
}
catch (MethodNotFoundException mnfe) {
processArgListener(context, elContext, event);
}
catch (IllegalArgumentException iae) {
processArgListener(context, elContext, event);
}
}
private void processArgListener(FacesContext context, ELContext elContext, AjaxBehaviorEvent event) throws AbortProcessingException {
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("Try to invoke listenerWithArg: " + listenerWithArg.getExpressionString());
}
try {
listenerWithArg.invoke(elContext , new Object[]{event});
}
catch (MethodNotFoundException mnfe) {
processCustomListener(context, elContext, event);
}
catch (IllegalArgumentException e) {
processCustomListener(context, elContext, event);
}
}
private void processCustomListener(FacesContext context, ELContext elContext, AjaxBehaviorEvent event) throws AbortProcessingException {
MethodExpression argListener = context.getApplication().getExpressionFactory().
createMethodExpression(elContext, listener.getExpressionString(), null, new Class[]{event.getClass()});
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("Try to invoke customListener: " + argListener.getExpressionString());
}
argListener.invoke(elContext, new Object[]{event});
}
}