1/** 2 * $RCSfile$ 3 * $Revision$ 4 * $Date$ 5 * 6 * Copyright 2003-2007 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 21package org.jivesoftware.smack.filter; 22 23import 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 */ 31public class ToContainsFilter implements PacketFilter { 32 33 private String 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 to) { 41 if (to == null) { 42 throw new IllegalArgumentException("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}