import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
/**
 * Initializes the listeners to detect received room invitations and to detect when the
 * connection gets closed. As soon as a room invitation is received the invitations
 * listeners will be fired. When the connection gets closed the monitor will remove
 * his listeners on the connection.
 */
private void init() {
    // Listens for all messages that include a MUCUser extension and fire the invitation
    // listeners if the message includes an invitation.
    invitationFilter =
        new PacketExtensionFilter("x", "http://jabber.org/protocol/muc#user");
    invitationPacketListener = new PacketListener() {
        public void processPacket(Packet packet) {
            // Get the MUCUser extension
            MUCUser mucUser =
                (MUCUser) packet.getExtension("x", "http://jabber.org/protocol/muc#user");
            // Check if the MUCUser extension includes an invitation
            if (mucUser.getInvite() != null &&
                    ((Message) packet).getType() != Message.Type.error) {
                // Fire event for invitation listeners
                fireInvitationListeners(packet.getFrom(), mucUser.getInvite().getFrom(),
                        mucUser.getInvite().getReason(), mucUser.getPassword(), (Message) packet);
            }
        }
    };
    connection.addPacketListener(invitationPacketListener, invitationFilter);
    // Add a listener to detect when the connection gets closed in order to
    // cancel/release this monitor 
    connection.addConnectionListener(this);
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
Occupant(Presence presence) {
    super();
    MUCUser mucUser = (MUCUser) presence.getExtension("x",
            "http://jabber.org/protocol/muc#user");
    MUCUser.Item item = mucUser.getItem();
    this.jid = item.getJid();
    this.affiliation = item.getAffiliation();
    this.role = item.getRole();
    // Get the nickname from the FROM attribute of the presence
    this.nick = StringUtils.parseResource(presence.getFrom());
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
/**
 * Returns the MUCUser packet extension included in the packet or <tt>null</tt> if none.
 *
 * @param packet the packet that may include the MUCUser extension.
 * @return the MUCUser found in the packet.
 */
private MUCUser getMUCUserExtension(Packet packet) {
    if (packet != null) {
        // Get the MUC User extension
        return (MUCUser) packet.getExtension("x", "http://jabber.org/protocol/muc#user");
    }
    return null;
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
Occupant(Presence presence) {
	super();
	MUCUser mucUser = (MUCUser) presence.getExtension("x",
			"http://jabber.org/protocol/muc#user");
	MUCUser.Item item = mucUser.getItem();
	this.jid = item.getJid();
	this.affiliation = item.getAffiliation();
	this.role = item.getRole();
	// Get the nickname from the FROM attribute of the presence
	this.nick = StringUtils.parseResource(presence.getFrom());
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
/**
 * Returns the MUCUser packet extension included in the packet or
 * <tt>null</tt> if none.
 * 
 * @param packet
 *            the packet that may include the MUCUser extension.
 * @return the MUCUser found in the packet.
 */
private MUCUser getMUCUserExtension(Packet packet) {
	if (packet != null) {
		// Get the MUC User extension
		return (MUCUser) packet.getExtension("x",
				"http://jabber.org/protocol/muc#user");
	}
	return null;
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
/**
 * Initializes the listeners to detect received room invitations and to
 * detect when the connection gets closed. As soon as a room invitation
 * is received the invitations listeners will be fired. When the
 * connection gets closed the monitor will remove his listeners on the
 * connection.
 */
private void init() {
	// Listens for all messages that include a MUCUser extension and
	// fire the invitation
	// listeners if the message includes an invitation.
	invitationFilter = new PacketExtensionFilter("x",
			"http://jabber.org/protocol/muc#user");
	invitationPacketListener = new PacketListener() {
		public void processPacket(Packet packet) {
			// Get the MUCUser extension
			MUCUser mucUser = (MUCUser) packet.getExtension("x",
					"http://jabber.org/protocol/muc#user");
			// Check if the MUCUser extension includes an invitation
			if (mucUser.getInvite() != null
					&& ((Message) packet).getType() != Message.Type.error) {
				// Fire event for invitation listeners
				fireInvitationListeners(packet.getFrom(), mucUser
						.getInvite().getFrom(), mucUser.getInvite()
						.getReason(), mucUser.getPassword(),
						(Message) packet);
			}
		}
	};
	connection.addPacketListener(invitationPacketListener,
			invitationFilter);
	// Add a listener to detect when the connection gets closed in order
	// to
	// cancel/release this monitor
	connection.addConnectionListener(this);
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
public static String getJidFromMUCPresence(Presence presence) {		
	Collection<PacketExtension> extensions = presence.getExtensions();
	for (PacketExtension pe : extensions) {
		if (pe instanceof MUCUser) {
			final MUCUser mucUser = (MUCUser) pe;
			String fullJid = mucUser.getItem().getJid();
			String userJid = StringUtils.parseBareAddress(fullJid);
			return userJid;
		}
	}
	return null;
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
/**
 * Creates the room according to some default configuration, assign the requesting user
 * as the room owner, and add the owner to the room but not allow anyone else to enter
 * the room (effectively "locking" the room). The requesting user will join the room
 * under the specified nickname as soon as the room has been created.<p>
 *
 * To create an "Instant Room", that means a room with some default configuration that is
 * available for immediate access, the room's owner should send an empty form after creating
 * the room. {@link #sendConfigurationForm(Form)}<p>
 *
 * To create a "Reserved Room", that means a room manually configured by the room creator
 * before anyone is allowed to enter, the room's owner should complete and send a form after
 * creating the room. Once the completed configutation form is sent to the server, the server
 * will unlock the room. {@link #sendConfigurationForm(Form)}
 *
 * @param nickname the nickname to use.
 * @throws XMPPException if the room couldn't be created for some reason
 *          (e.g. room already exists; user already joined to an existant room or
 *          405 error if the user is not allowed to create the room)
 */
public synchronized void create(String nickname) throws XMPPException {
    if (nickname == null || nickname.equals("")) {
        throw new IllegalArgumentException("Nickname must not be null or blank.");
    }
    // If we've already joined the room, leave it before joining under a new
    // nickname.
    if (joined) {
        throw new IllegalStateException("Creation failed - User already joined the room.");
    }
    // We create a room by sending a presence packet to [email protected]/nick
    // and signal support for MUC. The owner will be automatically logged into the room.
    Presence joinPresence = new Presence(Presence.Type.available);
    joinPresence.setTo(room + "/" + nickname);
    // Indicate the the client supports MUC
    joinPresence.addExtension(new MUCInitialPresence());
    // Invoke presence interceptors so that extra information can be dynamically added
    for (PacketInterceptor packetInterceptor : presenceInterceptors) {
        packetInterceptor.interceptPacket(joinPresence);
    }

    // Wait for a presence packet back from the server.
    PacketFilter responseFilter =
        new AndFilter(
            new FromMatchesFilter(room + "/" + nickname),
            new PacketTypeFilter(Presence.class));
    PacketCollector response = connection.createPacketCollector(responseFilter);
    // Send create & join packet.
    connection.sendPacket(joinPresence);
    // Wait up to a certain number of seconds for a reply.
    Presence presence =
        (Presence) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
    // Stop queuing results
    response.cancel();

    if (presence == null) {
        throw new XMPPException("No response from server.");
    }
    else if (presence.getError() != null) {
        throw new XMPPException(presence.getError());
    }
    // Whether the room existed before or was created, the user has joined the room
    this.nickname = nickname;
    joined = true;
    userHasJoined();

    // Look for confirmation of room creation from the server
    MUCUser mucUser = getMUCUserExtension(presence);
    if (mucUser != null && mucUser.getStatus() != null) {
        if ("201".equals(mucUser.getStatus().getCode())) {
            // Room was created and the user has joined the room
            return;
        }
    }
    // We need to leave the room since it seems that the room already existed
    leave();
    throw new XMPPException("Creation failed - Missing acknowledge of room creation.");
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
private void handlePacket(Packet packet) {
    if (packet instanceof Message) {
        Message msg = (Message)packet;
        // Check to see if the user left the queue.
        PacketExtension pe = msg.getExtension("depart-queue", "http://jabber.org/protocol/workgroup");
        PacketExtension queueStatus = msg.getExtension("queue-status", "http://jabber.org/protocol/workgroup");

        if (pe != null) {
            fireQueueDepartedEvent();
        }
        else if (queueStatus != null) {
            QueueUpdate queueUpdate = (QueueUpdate)queueStatus;
            if (queueUpdate.getPosition() != -1) {
                fireQueuePositionEvent(queueUpdate.getPosition());
            }
            if (queueUpdate.getRemaingTime() != -1) {
                fireQueueTimeEvent(queueUpdate.getRemaingTime());
            }
        }

        else {
            // Check if a room invitation was sent and if the sender is the workgroup
            MUCUser mucUser = (MUCUser)msg.getExtension("x", "http://jabber.org/protocol/muc#user");
            MUCUser.Invite invite = mucUser != null ? mucUser.getInvite() : null;
            if (invite != null && workgroupJID.equals(invite.getFrom())) {
                String sessionID = null;
                Map metaData = null;

                pe = msg.getExtension(SessionID.ELEMENT_NAME,
                        SessionID.NAMESPACE);
                if (pe != null) {
                    sessionID = ((SessionID)pe).getSessionID();
                }

                pe = msg.getExtension(MetaData.ELEMENT_NAME,
                        MetaData.NAMESPACE);
                if (pe != null) {
                    metaData = ((MetaData)pe).getMetaData();
                }

                WorkgroupInvitation inv = new WorkgroupInvitation(connection.getUser(), msg.getFrom(),
                        workgroupJID, sessionID, msg.getBody(),
                        msg.getFrom(), metaData);

                fireInvitationEvent(inv);
            }
        }
    }
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
private void handlePacket(Packet packet) {
    if (packet instanceof Message) {
        Message msg = (Message)packet;
        // Check to see if the user left the queue.
        PacketExtension pe = msg.getExtension("depart-queue", "http://jabber.org/protocol/workgroup");
        PacketExtension queueStatus = msg.getExtension("queue-status", "http://jabber.org/protocol/workgroup");

        if (pe != null) {
            fireQueueDepartedEvent();
        }
        else if (queueStatus != null) {
            QueueUpdate queueUpdate = (QueueUpdate)queueStatus;
            if (queueUpdate.getPosition() != -1) {
                fireQueuePositionEvent(queueUpdate.getPosition());
            }
            if (queueUpdate.getRemaingTime() != -1) {
                fireQueueTimeEvent(queueUpdate.getRemaingTime());
            }
        }

        else {
            // Check if a room invitation was sent and if the sender is the workgroup
            MUCUser mucUser = (MUCUser)msg.getExtension("x", "http://jabber.org/protocol/muc#user");
            MUCUser.Invite invite = mucUser != null ? mucUser.getInvite() : null;
            if (invite != null && workgroupJID.equals(invite.getFrom())) {
                String sessionID = null;
                Map<String, List<String>> metaData = null;

                pe = msg.getExtension(SessionID.ELEMENT_NAME,
                        SessionID.NAMESPACE);
                if (pe != null) {
                    sessionID = ((SessionID)pe).getSessionID();
                }

                pe = msg.getExtension(MetaData.ELEMENT_NAME,
                        MetaData.NAMESPACE);
                if (pe != null) {
                    metaData = ((MetaData)pe).getMetaData();
                }

                WorkgroupInvitation inv = new WorkgroupInvitation(connection.getUser(), msg.getFrom(),
                        workgroupJID, sessionID, msg.getBody(),
                        msg.getFrom(), metaData);

                fireInvitationEvent(inv);
            }
        }
    }
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
private void handlePacket(Packet packet) {
	if (packet instanceof Message) {
		Message msg = (Message) packet;
		// Check to see if the user left the queue.
		PacketExtension pe = msg.getExtension("depart-queue",
				"http://jabber.org/protocol/workgroup");
		PacketExtension queueStatus = msg.getExtension("queue-status",
				"http://jabber.org/protocol/workgroup");

		if (pe != null) {
			fireQueueDepartedEvent();
		} else if (queueStatus != null) {
			QueueUpdate queueUpdate = (QueueUpdate) queueStatus;
			if (queueUpdate.getPosition() != -1) {
				fireQueuePositionEvent(queueUpdate.getPosition());
			}
			if (queueUpdate.getRemaingTime() != -1) {
				fireQueueTimeEvent(queueUpdate.getRemaingTime());
			}
		}

		else {
			// Check if a room invitation was sent and if the sender is the
			// workgroup
			MUCUser mucUser = (MUCUser) msg.getExtension("x",
					"http://jabber.org/protocol/muc#user");
			MUCUser.Invite invite = mucUser != null ? mucUser.getInvite()
					: null;
			if (invite != null && workgroupJID.equals(invite.getFrom())) {
				String sessionID = null;
				Map metaData = null;

				pe = msg.getExtension(SessionID.ELEMENT_NAME,
						SessionID.NAMESPACE);
				if (pe != null) {
					sessionID = ((SessionID) pe).getSessionID();
				}

				pe = msg.getExtension(MetaData.ELEMENT_NAME,
						MetaData.NAMESPACE);
				if (pe != null) {
					metaData = ((MetaData) pe).getMetaData();
				}

				WorkgroupInvitation inv = new WorkgroupInvitation(
						connection.getUser(), msg.getFrom(), workgroupJID,
						sessionID, msg.getBody(), msg.getFrom(), metaData);

				fireInvitationEvent(inv);
			}
		}
	}
}
 

import org.jivesoftware.smackx.packet.MUCUser; //导入依赖的package包/类
/**
    * Handle all presence packets being sent to this Group Chat Room.
    *
    * @param packet
    *            the presence packet.
    */
   private void handlePresencePacket(Packet packet) {
Presence presence = (Presence) packet;
if (presence.getError() != null) {
    return;
}

final String from = presence.getFrom();
final String nickname = StringUtils.parseResource(from);

MUCUser mucUser = (MUCUser) packet.getExtension("x",
	"http://jabber.org/protocol/muc#user");
String code = "";
if (mucUser != null) {
    code = mucUser.getStatus() != null ? mucUser.getStatus().getCode()
	    : "";

    Destroy destroy = mucUser.getDestroy();
    if (destroy != null) {
	String reason = destroy.getReason();
	JOptionPane.showMessageDialog(this,
		Res.getString("message.room.destroyed", reason),
		Res.getString("title.room.destroyed"),
		JOptionPane.INFORMATION_MESSAGE);
	leaveChatRoom();
	return;
    }
}

if (presence.getType() == Presence.Type.unavailable
	&& !"303".equals(code)) {
    if (currentUserList.contains(from)) {
	if (showPresenceMessages) {
	    getTranscriptWindow().insertNotificationMessage(
		    Res.getString("message.user.left.room", nickname),
		    ChatManager.NOTIFICATION_COLOR);
	    scrollToBottom();
	}
	currentUserList.remove(from);
    }
} else {
    if (!currentUserList.contains(from)) {
	currentUserList.add(from);
	getChatInputEditor().setEnabled(true);
	if (showPresenceMessages) {
	    getTranscriptWindow()
		    .insertNotificationMessage(
			    Res.getString("message.user.joined.room",
				    nickname),
			    ChatManager.NOTIFICATION_COLOR);
	    scrollToBottom();
	}
    }
}
   }