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.muc.provider;
019
020
021import java.io.IOException;
022
023import org.jivesoftware.smack.provider.ExtensionElementProvider;
024import org.jivesoftware.smackx.muc.packet.MUCUser;
025import org.xmlpull.v1.XmlPullParser;
026import org.xmlpull.v1.XmlPullParserException;
027
028/**
029 * The MUCUserProvider parses packets with extended presence information about 
030 * roles and affiliations.
031 *
032 * @author Gaston Dombiak
033 */
034public class MUCUserProvider extends ExtensionElementProvider<MUCUser> {
035
036    /**
037     * Parses a MUCUser stanza(/packet) (extension sub-packet).
038     *
039     * @param parser the XML parser, positioned at the starting element of the extension.
040     * @return a PacketExtension.
041     * @throws IOException 
042     * @throws XmlPullParserException 
043     */
044    @Override
045    public MUCUser parse(XmlPullParser parser, int initialDepth) throws XmlPullParserException, IOException {
046        MUCUser mucUser = new MUCUser();
047        outerloop: while (true) {
048            switch (parser.next()) {
049            case XmlPullParser.START_TAG:
050                switch (parser.getName()) {
051                case "invite":
052                    mucUser.setInvite(parseInvite(parser));
053                    break;
054                case "item":
055                    mucUser.setItem(MUCParserUtils.parseItem(parser));
056                    break;
057                case "password":
058                    mucUser.setPassword(parser.nextText());
059                    break;
060                case "status":
061                    String statusString = parser.getAttributeValue("", "code");
062                    mucUser.addStatusCode(MUCUser.Status.create(statusString));
063                    break;
064                case "decline":
065                    mucUser.setDecline(parseDecline(parser));
066                    break;
067                case "destroy":
068                    mucUser.setDestroy(MUCParserUtils.parseDestroy(parser));
069                    break;
070                }
071                break;
072            case XmlPullParser.END_TAG:
073                if (parser.getDepth() == initialDepth) {
074                    break outerloop;
075                }
076                break;
077            }
078        }
079
080        return mucUser;
081    }
082
083    private static MUCUser.Invite parseInvite(XmlPullParser parser) throws XmlPullParserException, IOException {
084        boolean done = false;
085        MUCUser.Invite invite = new MUCUser.Invite();
086        invite.setFrom(parser.getAttributeValue("", "from"));
087        invite.setTo(parser.getAttributeValue("", "to"));
088        while (!done) {
089            int eventType = parser.next();
090            if (eventType == XmlPullParser.START_TAG) {
091                if (parser.getName().equals("reason")) {
092                    invite.setReason(parser.nextText());
093                }
094            }
095            else if (eventType == XmlPullParser.END_TAG) {
096                if (parser.getName().equals("invite")) {
097                    done = true;
098                }
099            }
100        }
101        return invite;
102    }
103
104    private static MUCUser.Decline parseDecline(XmlPullParser parser) throws XmlPullParserException, IOException {
105        boolean done = false;
106        MUCUser.Decline decline = new MUCUser.Decline();
107        decline.setFrom(parser.getAttributeValue("", "from"));
108        decline.setTo(parser.getAttributeValue("", "to"));
109        while (!done) {
110            int eventType = parser.next();
111            if (eventType == XmlPullParser.START_TAG) {
112                if (parser.getName().equals("reason")) {
113                    decline.setReason(parser.nextText());
114                }
115            }
116            else if (eventType == XmlPullParser.END_TAG) {
117                if (parser.getName().equals("decline")) {
118                    done = true;
119                }
120            }
121        }
122        return decline;
123    }
124}