/*
* CollectionEvent.java 27 oct. 2008
*
* Sweet Home 3D, Copyright (c) 2008 Emmanuel PUYBARET / eTeks <info@eteks.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.eteks.sweethome3d.model;
import java.util.EventObject;
/**
* Type of event notified when an item is added or deleted from a list.
* <code>T</code> is the type of item stored in the collection.
* @author Emmanuel Puybaret
*/
public class CollectionEvent<T> extends EventObject {
/**
* The type of change in the collection.
*/
public enum Type {ADD, DELETE}
private final T item;
private final int index;
private final Type type;
/**
* Creates an event for an item that has no index.
*/
public CollectionEvent(Object source, T item, Type type) {
this(source, item, -1, type);
}
/**
* Creates an event for an item with its index.
*/
public CollectionEvent(Object source, T item, int index, Type type) {
super(source);
this.item = item;
this.index = index;
this.type = type;
}
/**
* Returns the added or deleted item.
*/
public T getItem() {
return this.item;
}
/**
* Returns the index of the item in collection or -1 if this index is unknown.
*/
public int getIndex() {
return this.index;
}
/**
* Returns the type of event.
*/
public Type getType() {
return this.type;
}
}