64 lines
2.0 KiB
Java
64 lines
2.0 KiB
Java
/**
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*
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* Copyright 2003-2007 Jive Software.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.filter;
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import org.jivesoftware.smack.packet.Message;
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import org.jivesoftware.smack.packet.Packet;
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import org.jivesoftware.smack.packet.Presence;
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/**
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* Filters for packets of a particular type. The type is given as a Class object, so
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* example types would:
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* <ul>
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* <li><tt>Message.class</tt>
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* <li><tt>IQ.class</tt>
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* <li><tt>Presence.class</tt>
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* </ul>
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*
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* @author Matt Tucker
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*/
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public class PacketTypeFilter implements PacketFilter {
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public static final PacketTypeFilter PRESENCE = new PacketTypeFilter(Presence.class);
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public static final PacketTypeFilter MESSAGE = new PacketTypeFilter(Message.class);
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Class<? extends Packet> packetType;
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/**
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* Creates a new packet type filter that will filter for packets that are the
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* same type as <tt>packetType</tt>.
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*
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* @param packetType the Class type.
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*/
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public PacketTypeFilter(Class<? extends Packet> packetType) {
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// Ensure the packet type is a sub-class of Packet.
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if (!Packet.class.isAssignableFrom(packetType)) {
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throw new IllegalArgumentException("Packet type must be a sub-class of Packet.");
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}
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this.packetType = packetType;
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}
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public boolean accept(Packet packet) {
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return packetType.isInstance(packet);
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}
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public String toString() {
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return "PacketTypeFilter: " + packetType.getName();
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}
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}
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