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Java > Open Source Codes > org > jivesoftware > smack > filter > ToContainsFilter


1 /**
2  * $RCSfile$
3  * $Revision: 2408 $
4  * $Date: 2004-11-02 20:53:30 -0300 (Tue, 02 Nov 2004) $
5  *
6  * Copyright 2003-2004 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.smack.filter;
22
23 import org.jivesoftware.smack.packet.Packet;
24
25 /**
26  * Filters for packets where the "to" field contains a specified value. For example,
27  * the filter could be used to listen for all packets sent to a group chat nickname.
28  *
29  * @author Matt Tucker
30  */
31 public class ToContainsFilter implements PacketFilter {
32
33     private String JavaDoc to;
34
35     /**
36      * Creates a "to" contains filter using the "to" field part.
37      *
38      * @param to the to field value the packet must contain.
39      */
40     public ToContainsFilter(String JavaDoc to) {
41         if (to == null) {
42             throw new IllegalArgumentException JavaDoc("Parameter cannot be null.");
43         }
44         this.to = to.toLowerCase();
45     }
46
47     public boolean accept(Packet packet) {
48         if (packet.getTo() == null) {
49             return false;
50         }
51         else {
52             return packet.getTo().toLowerCase().indexOf(to) != -1;
53         }
54     }
55 }
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