1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/**
* $RCSfile$
* $Revision$
* $Date$
*
* 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.Iterator;
import java.util.List;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.Roster;
import org.jivesoftware.smack.RosterEntry;
import org.jivesoftware.smack.RosterGroup;
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.smackx.packet.RosterExchange;
/**
*
* Manages Roster exchanges. A RosterExchangeManager provides a high level access to send
* rosters, roster groups and roster entries to XMPP clients. It also provides an easy way
* to hook up custom logic when entries are received from another XMPP client through
* RosterExchangeListeners.
*
* @author Gaston Dombiak
*/
public class RosterExchangeManager {
private List<RosterExchangeListener> rosterExchangeListeners = new ArrayList<RosterExchangeListener>();
private Connection con;
private PacketFilter packetFilter = new PacketExtensionFilter("x", "jabber:x:roster");
private PacketListener packetListener;
/**
* Creates a new roster exchange manager.
*
* @param con a Connection which is used to send and receive messages.
*/
public RosterExchangeManager(Connection con) {
this.con = con;
init();
}
/**
* Adds a listener to roster exchanges. The listener will be fired anytime roster entries
* are received from remote XMPP clients.
*
* @param rosterExchangeListener a roster exchange listener.
*/
public void addRosterListener(RosterExchangeListener rosterExchangeListener) {
synchronized (rosterExchangeListeners) {
if (!rosterExchangeListeners.contains(rosterExchangeListener)) {
rosterExchangeListeners.add(rosterExchangeListener);
}
}
}
/**
* Removes a listener from roster exchanges. The listener will be fired anytime roster
* entries are received from remote XMPP clients.
*
* @param rosterExchangeListener a roster exchange listener..
*/
public void removeRosterListener(RosterExchangeListener rosterExchangeListener) {
synchronized (rosterExchangeListeners) {
rosterExchangeListeners.remove(rosterExchangeListener);
}
}
/**
* Sends a roster to userID. All the entries of the roster will be sent to the
* target user.
*
* @param roster the roster to send
* @param targetUserID the user that will receive the roster entries
*/
public void send(Roster roster, String targetUserID) {
// Create a new message to send the roster
Message msg = new Message(targetUserID);
// Create a RosterExchange Package and add it to the message
RosterExchange rosterExchange = new RosterExchange(roster);
msg.addExtension(rosterExchange);
// Send the message that contains the roster
con.sendPacket(msg);
}
/**
* Sends a roster entry to userID.
*
* @param rosterEntry the roster entry to send
* @param targetUserID the user that will receive the roster entries
*/
public void send(RosterEntry rosterEntry, String targetUserID) {
// Create a new message to send the roster
Message msg = new Message(targetUserID);
// Create a RosterExchange Package and add it to the message
RosterExchange rosterExchange = new RosterExchange();
rosterExchange.addRosterEntry(rosterEntry);
msg.addExtension(rosterExchange);
// Send the message that contains the roster
con.sendPacket(msg);
}
/**
* Sends a roster group to userID. All the entries of the group will be sent to the
* target user.
*
* @param rosterGroup the roster group to send
* @param targetUserID the user that will receive the roster entries
*/
public void send(RosterGroup rosterGroup, String targetUserID) {
// Create a new message to send the roster
Message msg = new Message(targetUserID);
// Create a RosterExchange Package and add it to the message
RosterExchange rosterExchange = new RosterExchange();
for (RosterEntry entry : rosterGroup.getEntries()) {
rosterExchange.addRosterEntry(entry);
}
msg.addExtension(rosterExchange);
// Send the message that contains the roster
con.sendPacket(msg);
}
/**
* Fires roster exchange listeners.
*/
private void fireRosterExchangeListeners(String from, Iterator<RemoteRosterEntry> remoteRosterEntries) {
RosterExchangeListener[] listeners = null;
synchronized (rosterExchangeListeners) {
listeners = new RosterExchangeListener[rosterExchangeListeners.size()];
rosterExchangeListeners.toArray(listeners);
}
for (int i = 0; i < listeners.length; i++) {
listeners[i].entriesReceived(from, remoteRosterEntries);
}
}
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;
RosterExchange rosterExchange =
(RosterExchange) message.getExtension("x", "jabber:x:roster");
// Fire event for roster exchange listeners
fireRosterExchangeListeners(message.getFrom(), rosterExchange.getRosterEntries());
};
};
con.addPacketListener(packetListener, packetFilter);
}
public void destroy() {
if (con != null)
con.removePacketListener(packetListener);
}
protected void finalize() throws Throwable {
destroy();
super.finalize();
}
}
|
