/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* 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.arquillian.core.impl;
import java.util.ArrayList;
import java.util.List;
import org.jboss.arquillian.core.spi.EventContext;
import org.jboss.arquillian.core.spi.InvocationException;
import org.jboss.arquillian.core.spi.NonManagedObserver;
import org.jboss.arquillian.core.spi.ObserverMethod;
import org.jboss.arquillian.core.spi.Validate;
/**
* EventContextImpl
*
* @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
* @version $Revision: $
*/
public class EventContextImpl<T> implements EventContext<T>
{
private ManagerImpl manager;
private List<ObserverMethod> interceptors;
private List<ObserverMethod> observers;
private NonManagedObserver<T> nonManagedObserver;
private T event;
private int currentInterceptor = 0;
/**
* Create a new EventContext that will process all interceptors, observers and the non managed observer for a given event.
*
* @param manager The manager instance to operate on
* @param interceptors List of interceptor observers, @Observers of EventContext<T>
* @param observers List of Observers, @Observes T
* @param nonManagedObserver a NonManagedObserver of type T
* @param event The event
* @throws IllegalArgumentException if Manager is null
* @throws IllegalArgumentException if Event is null
*/
public EventContextImpl(ManagerImpl manager, List<ObserverMethod> interceptors, List<ObserverMethod> observers, NonManagedObserver<T> nonManagedObserver, T event)
{
Validate.notNull(manager, "Manager must be specified");
Validate.notNull(event, "Event must be specified");
this.manager = manager;
this.interceptors = interceptors == null ? new ArrayList<ObserverMethod>():interceptors;
this.observers = observers == null ? new ArrayList<ObserverMethod>():observers;
this.nonManagedObserver = nonManagedObserver;
this.event = event;
}
@Override
public T getEvent()
{
return event;
}
@Override
public void proceed()
{
if(currentInterceptor == interceptors.size())
{
invokeObservers();
invokeNonManagedObserver();
}
else
{
ObserverMethod interceptor = interceptors.get(currentInterceptor++);
manager.debug(interceptor, true);
interceptor.invoke(manager, this);
}
}
private void invokeObservers()
{
for(ObserverMethod observer : observers)
{
try
{
manager.debug(observer, false);
observer.invoke(manager, event);
}
catch (InvocationException e)
{
Throwable cause = e.getCause();
if(manager.isExceptionHandled(cause))
{
UncheckedThrow.throwUnchecked(cause);
}
else
{
manager.fireException(cause);
}
}
}
}
private void invokeNonManagedObserver()
{
if(this.nonManagedObserver != null)
{
manager.inject(nonManagedObserver);
nonManagedObserver.fired(getEvent());
}
}
}