/*
* Copyright (C) 2003-2011 eXo Platform SAS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.etk.common.utils;
import java.util.ArrayList;
/**
* Created by The eXo Platform SAS Author : eXoPlatform
* thanhvucong.78@google.com Aug 13, 2011
*/
public class ListenerStack extends ArrayList {
public ListenerStack() {
super();
}
public ListenerStack(int size) {
super(size);
}
public void add(int index, Object element) {
throw new UnsupportedOperationException("use add(java.lang.Object)");
}
public boolean add(java.lang.Object obj) {
String name = obj.getClass().getName();
for (int i = 0; i < size(); i++) {
Object found = get(i);
if (name.equals(found.getClass().getName())) {
remove(i);
break;
}
}
return super.add(obj);
}
}