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/*
* JBoss, Home of Professional Open Source
* Copyright 2015, Red Hat, Inc., and individual contributors as indicated
* by the @authors tag.
*
* 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.util;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
/**
* A static singleton that handles processing throwables that otherwise would
* be ignored or dumped to System.err.
*
* @version $Revision$
* @author Jason Dillon
*/
public final class ThrowableHandler
{
/**
* Container for throwable types.
*/
public static interface Type
{
/** Unknown throwable. */
int UNKNOWN = 0;
/** Error throwable. */
int ERROR = 1;
/** Warning throwable. */
int WARNING = 2;
}
/////////////////////////////////////////////////////////////////////////
// Listener Methods //
/////////////////////////////////////////////////////////////////////////
/** The list of listeners */
protected static List listeners = Collections.synchronizedList(new ArrayList());
/**
* Add a ThrowableListener to the listener list. Listener is added only
* if if it is not already in the list.
*
* @param listener ThrowableListener to add to the list.
*/
public static void addThrowableListener(ThrowableListener listener) {
// only add the listener if it isn't already in the list
if (!listeners.contains(listener)) {
listeners.add(listener);
}
}
/**
* Remove a ThrowableListener from the listener list.
*
* @param listener ThrowableListener to remove from the list.
*/
public static void removeThrowableListener(ThrowableListener listener) {
listeners.remove(listener);
}
/**
* Fire onThrowable to all registered listeners.
*
* @param type The type off the throwable.
* @param t Throwable
*/
protected static void fireOnThrowable(int type, Throwable t) {
Object[] list = listeners.toArray();
for (int i=0; i