Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | /** |
| 2 | * $RCSfile$ |
| 3 | * $Revision: $ |
| 4 | * $Date$ |
| 5 | * |
| 6 | * Copyright 2003-2006 Jive Software. |
| 7 | * |
| 8 | * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); |
| 9 | * you may not use this file except in compliance with the License. |
| 10 | * You may obtain a copy of the License at |
| 11 | * |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 13 | * |
| 14 | * Unless required by applicable law or agreed to in writing, software |
| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | * See the License for the specific language governing permissions and |
| 18 | * limitations under the License. |
| 19 | */ |
| 20 | |
| 21 | package org.jivesoftware.smackx.muc; |
| 22 | |
| 23 | import org.jivesoftware.smack.PacketInterceptor; |
| 24 | import org.jivesoftware.smack.packet.Packet; |
| 25 | import org.jivesoftware.smack.packet.PacketExtension; |
| 26 | import org.jivesoftware.smack.packet.Presence; |
| 27 | |
| 28 | /** |
| 29 | * Packet interceptor that will intercept presence packets sent to the MUC service to indicate |
| 30 | * that the user wants to be a deaf occupant. A user can only indicate that he wants to be a |
| 31 | * deaf occupant while joining the room. It is not possible to become deaf or stop being deaf |
| 32 | * after the user joined the room.<p> |
| 33 | * |
| 34 | * Deaf occupants will not get messages broadcasted to all room occupants. However, they will |
| 35 | * be able to get private messages, presences, IQ packets or room history. To use this |
| 36 | * functionality you will need to send the message |
| 37 | * {@link MultiUserChat#addPresenceInterceptor(org.jivesoftware.smack.PacketInterceptor)} and |
| 38 | * pass this interceptor as the parameter.<p> |
| 39 | * |
| 40 | * Note that this is a custom extension to the MUC service so it may not work with other servers |
| 41 | * than Wildfire. |
| 42 | * |
| 43 | * @author Gaston Dombiak |
| 44 | */ |
| 45 | public class DeafOccupantInterceptor implements PacketInterceptor { |
| 46 | |
| 47 | public void interceptPacket(Packet packet) { |
| 48 | Presence presence = (Presence) packet; |
| 49 | // Check if user is joining a room |
| 50 | if (Presence.Type.available == presence.getType() && |
| 51 | presence.getExtension("x", "http://jabber.org/protocol/muc") != null) { |
| 52 | // Add extension that indicates that user wants to be a deaf occupant |
| 53 | packet.addExtension(new DeafExtension()); |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | private static class DeafExtension implements PacketExtension { |
| 58 | |
| 59 | public String getElementName() { |
| 60 | return "x"; |
| 61 | } |
| 62 | |
| 63 | public String getNamespace() { |
| 64 | return "http://jivesoftware.org/protocol/muc"; |
| 65 | } |
| 66 | |
| 67 | public String toXML() { |
| 68 | StringBuilder buf = new StringBuilder(); |
| 69 | buf.append("<").append(getElementName()).append(" xmlns=\"").append(getNamespace()) |
| 70 | .append("\">"); |
| 71 | buf.append("<deaf-occupant/>"); |
| 72 | buf.append("</").append(getElementName()).append(">"); |
| 73 | return buf.toString(); |
| 74 | } |
| 75 | } |
| 76 | } |