/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * The contents of this file are subject to the terms of either the GNU
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
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 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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 * Header, with the fields enclosed by brackets [] replaced by your own
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 package com.sun.enterprise.util;

import java.util.EventObject;
import java.util.Hashtable;

    /** Generic event for notifications.
    * @author Danny Coward
    */

public class NotificationEvent extends EventObject {

    public static final String OBJECT_THAT_CHANGED = "ObjectThatChanged";
    public static final String ATTRIBUTE_THAT_CHANGED = "AttributeThatChanged";

    private String type = null;
    protected Hashtable properties = new Hashtable();
    
    public NotificationEvent(Object source, String type) {
	super(source);
	this.type = type;
    }
    
    public NotificationEvent(Object source, String type, String name, Object value) {
	super(source);
	this.type = type;
	this.properties.put(name, value);
    }
    
    public NotificationEvent(Object source, String type, Object objectThatChanged) {
	super(source);
	this.type = type;
	this.properties.put(OBJECT_THAT_CHANGED, objectThatChanged);
    }
        
    public NotificationEvent(Object source, String type, Object objectThatChanged, Object attribThatChanged) {
	this(source, type, objectThatChanged);
	if (attribThatChanged != null) {
	    this.properties.put(ATTRIBUTE_THAT_CHANGED, attribThatChanged);
	}
    }

    public String getType() {
	return this.type;
    }
    
    public Object getValue(String name) {
	return this.properties.get(name);
    }
    
    public Object getObjectThatChanged() {
	return this.properties.get(OBJECT_THAT_CHANGED);
    }
        
    public Object getAttributeThatChanged() {
	return this.properties.get(ATTRIBUTE_THAT_CHANGED);
    }

}