001/**
002 *
003 * Copyright 2003-2007 Jive Software.
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.jivesoftware.smackx.chatstates.packet;
019
020import org.jivesoftware.smack.packet.ExtensionElement;
021import org.jivesoftware.smack.util.XmlStringBuilder;
022
023import org.jivesoftware.smackx.chatstates.ChatState;
024
025/**
026 * Represents a chat state which is an extension to message packets which is used to indicate
027 * the current status of a chat participant.
028 *
029 * @author Alexander Wenckus
030 * @see org.jivesoftware.smackx.chatstates.ChatState
031 */
032public class ChatStateExtension implements ExtensionElement {
033
034    public static final String NAMESPACE = "http://jabber.org/protocol/chatstates";
035
036    private final ChatState state;
037
038    /**
039     * Default constructor. The argument provided is the state that the extension will represent.
040     *
041     * @param state the state that the extension represents.
042     */
043    public ChatStateExtension(ChatState state) {
044        this.state = state;
045    }
046
047    @Override
048    public String getElementName() {
049        return state.name();
050    }
051
052    @Override
053    public String getNamespace() {
054        return NAMESPACE;
055    }
056
057    public ChatState getChatState() {
058        return state;
059    }
060
061    @Override
062    public XmlStringBuilder toXML(String enclosingNamespace) {
063        XmlStringBuilder xml = new XmlStringBuilder(this);
064        xml.closeEmptyElement();
065        return xml;
066    }
067
068}