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/**
* $RCSfile$
* $Revision$
* $Date: 2005-07-26 19:10:33 +0200 (Tue, 26 Jul 2005) $
*
* Copyright (C) 2004-2008 Jive Software. All rights reserved.
*
* 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.jivesoftware.openfire.vcard;
import org.dom4j.Element;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Dispatches vCard events. The following events are supported:
* <ul>
* <li><b>VCardCreated</b> --> A VCard has been created.</li>
* <li><b>VCardDeleted</b> --> A VCard has been deleted.</li>
* <li><b>VCardUpdate</b> --> A VCard has been updated.</li>
* </ul>
* Use {@link #addListener(org.jivesoftware.openfire.vcard.VCardListener)}
* to add or remove {@link org.jivesoftware.openfire.vcard.VCardListener}.
*
* @author Gabriel Guardincerri
*/
public class VCardEventDispatcher {
/**
* List of listeners that will be notified when vCards are created, updated or deleted.
*/
private static List<VCardListener> listeners = new CopyOnWriteArrayList<VCardListener>();
/**
* Registers a listener to receive events when a vCard is created, updated or deleted.
*
* @param listener the listener.
*/
public static void addListener(VCardListener listener) {
if (listener == null) {
throw new NullPointerException();
}
listeners.add(listener);
}
/**
* Unregisters a listener to receive events.
*
* @param listener the listener.
*/
public static void removeListener(VCardListener listener) {
listeners.remove(listener);
}
/**
* Dispatches that a vCard was updated to all listeners.
*
* @param user the user for which the vCard was set.
* @param vCard the vcard updated.
*/
public static void dispatchVCardUpdated(String user, Element vCard) {
for (VCardListener listener : listeners) {
listener.vCardUpdated(user, vCard);
}
}
/**
* Dispatches that a vCard was created to all listeners.
*
* @param user the user for which the vCard was created.
* @param vCard the vcard created.
*/
public static void dispatchVCardCreated(String user, Element vCard) {
for (VCardListener listener : listeners) {
listener.vCardCreated(user, vCard);
}
}
/**
* Dispatches that a vCard was deleted to all listeners.
*
* @param user the user for which the vCard was deleted.
* @param vCard the vcard deleted.
*/
public static void dispatchVCardDeleted(String user, Element vCard) {
for (VCardListener listener : listeners) {
listener.vCardDeleted(user, vCard);
}
}
}