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/**
* $RCSfile: PEPManager.java,v $
* $Revision: 1.4 $
* $Date: 2007/11/06 21:43:40 $
*
* Copyright 2003-2007 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.smackx;
import java.util.ArrayList;
import java.util.List;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.Connection;
import org.jivesoftware.smack.filter.PacketExtensionFilter;
import org.jivesoftware.smack.filter.PacketFilter;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.IQ.Type;
import org.jivesoftware.smackx.packet.PEPEvent;
import org.jivesoftware.smackx.packet.PEPItem;
import org.jivesoftware.smackx.packet.PEPPubSub;
/**
*
* Manages Personal Event Publishing (XEP-163). A PEPManager provides a high level access to
* pubsub personal events. It also provides an easy way
* to hook up custom logic when events are received from another XMPP client through PEPListeners.
*
* Use example:
*
* <pre>
* PEPManager pepManager = new PEPManager(smackConnection);
* pepManager.addPEPListener(new PEPListener() {
* public void eventReceived(String inFrom, PEPEvent inEvent) {
* LOGGER.debug("Event received: " + inEvent);
* }
* });
*
* PEPProvider pepProvider = new PEPProvider();
* pepProvider.registerPEPParserExtension("http://jabber.org/protocol/tune", new TuneProvider());
* ProviderManager.getInstance().addExtensionProvider("event", "http://jabber.org/protocol/pubsub#event", pepProvider);
*
* Tune tune = new Tune("jeff", "1", "CD", "My Title", "My Track");
* pepManager.publish(tune);
* </pre>
*
* @author Jeff Williams
*/
public class PEPManager {
private List<PEPListener> pepListeners = new ArrayList<PEPListener>();
private Connection connection;
private PacketFilter packetFilter = new PacketExtensionFilter("event", "http://jabber.org/protocol/pubsub#event");
private PacketListener packetListener;
/**
* Creates a new PEP exchange manager.
*
* @param connection a Connection which is used to send and receive messages.
*/
public PEPManager(Connection connection) {
this.connection = connection;
init();
}
/**
* Adds a listener to PEPs. The listener will be fired anytime PEP events
* are received from remote XMPP clients.
*
* @param pepListener a roster exchange listener.
*/
public void addPEPListener(PEPListener pepListener) {
synchronized (pepListeners) {
if (!pepListeners.contains(pepListener)) {
pepListeners.add(pepListener);
}
}
}
/**
* Removes a listener from PEP events.
*
* @param pepListener a roster exchange listener.
*/
public void removePEPListener(PEPListener pepListener) {
synchronized (pepListeners) {
pepListeners.remove(pepListener);
}
}
/**
* Publish an event.
*
* @param item the item to publish.
*/
public void publish(PEPItem item) {
// Create a new message to publish the event.
PEPPubSub pubSub = new PEPPubSub(item);
pubSub.setType(Type.SET);
//pubSub.setFrom(connection.getUser());
// Send the message that contains the roster
connection.sendPacket(pubSub);
}
/**
* Fires roster exchange listeners.
*/
private void firePEPListeners(String from, PEPEvent event) {
PEPListener[] listeners = null;
synchronized (pepListeners) {
listeners = new PEPListener[pepListeners.size()];
pepListeners.toArray(listeners);
}
for (int i = 0; i < listeners.length; i++) {
listeners[i].eventReceived(from, event);
}
}
private void init() {
// Listens for all roster exchange packets and fire the roster exchange listeners.
packetListener = new PacketListener() {
public void processPacket(Packet packet) {
Message message = (Message) packet;
PEPEvent event = (PEPEvent) message.getExtension("event", "http://jabber.org/protocol/pubsub#event");
// Fire event for roster exchange listeners
firePEPListeners(message.getFrom(), event);
};
};
connection.addPacketListener(packetListener, packetFilter);
}
public void destroy() {
if (connection != null)
connection.removePacketListener(packetListener);
}
protected void finalize() throws Throwable {
destroy();
super.finalize();
}
}
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