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 21 package org.jivesoftware.smackx.provider; 22 23 import org.jivesoftware.smack.packet.PacketExtension; 24 import org.jivesoftware.smack.provider.PacketExtensionProvider; 25 import org.jivesoftware.smackx.FormField; 26 import org.jivesoftware.smackx.packet.DataForm; 27 import org.xmlpull.v1.XmlPullParser; 28 29 import java.util.ArrayList; 30 import java.util.List; 31 32 /** 33 * The DataFormProvider parses DataForm packets. 34 * 35 * @author Gaston Dombiak 36 */ 37 public class DataFormProvider implements PacketExtensionProvider { 38 39 /** 40 * Creates a new DataFormProvider. 41 * ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor 42 */ DataFormProvider()43 public DataFormProvider() { 44 } 45 parseExtension(XmlPullParser parser)46 public PacketExtension parseExtension(XmlPullParser parser) throws Exception { 47 boolean done = false; 48 StringBuilder buffer = null; 49 DataForm dataForm = new DataForm(parser.getAttributeValue("", "type")); 50 while (!done) { 51 int eventType = parser.next(); 52 if (eventType == XmlPullParser.START_TAG) { 53 if (parser.getName().equals("instructions")) { 54 dataForm.addInstruction(parser.nextText()); 55 } 56 else if (parser.getName().equals("title")) { 57 dataForm.setTitle(parser.nextText()); 58 } 59 else if (parser.getName().equals("field")) { 60 dataForm.addField(parseField(parser)); 61 } 62 else if (parser.getName().equals("item")) { 63 dataForm.addItem(parseItem(parser)); 64 } 65 else if (parser.getName().equals("reported")) { 66 dataForm.setReportedData(parseReported(parser)); 67 } 68 } else if (eventType == XmlPullParser.END_TAG) { 69 if (parser.getName().equals(dataForm.getElementName())) { 70 done = true; 71 } 72 } 73 } 74 return dataForm; 75 } 76 parseField(XmlPullParser parser)77 private FormField parseField(XmlPullParser parser) throws Exception { 78 boolean done = false; 79 FormField formField = new FormField(parser.getAttributeValue("", "var")); 80 formField.setLabel(parser.getAttributeValue("", "label")); 81 formField.setType(parser.getAttributeValue("", "type")); 82 while (!done) { 83 int eventType = parser.next(); 84 if (eventType == XmlPullParser.START_TAG) { 85 if (parser.getName().equals("desc")) { 86 formField.setDescription(parser.nextText()); 87 } 88 else if (parser.getName().equals("value")) { 89 formField.addValue(parser.nextText()); 90 } 91 else if (parser.getName().equals("required")) { 92 formField.setRequired(true); 93 } 94 else if (parser.getName().equals("option")) { 95 formField.addOption(parseOption(parser)); 96 } 97 } else if (eventType == XmlPullParser.END_TAG) { 98 if (parser.getName().equals("field")) { 99 done = true; 100 } 101 } 102 } 103 return formField; 104 } 105 parseItem(XmlPullParser parser)106 private DataForm.Item parseItem(XmlPullParser parser) throws Exception { 107 boolean done = false; 108 List<FormField> fields = new ArrayList<FormField>(); 109 while (!done) { 110 int eventType = parser.next(); 111 if (eventType == XmlPullParser.START_TAG) { 112 if (parser.getName().equals("field")) { 113 fields.add(parseField(parser)); 114 } 115 } else if (eventType == XmlPullParser.END_TAG) { 116 if (parser.getName().equals("item")) { 117 done = true; 118 } 119 } 120 } 121 return new DataForm.Item(fields); 122 } 123 parseReported(XmlPullParser parser)124 private DataForm.ReportedData parseReported(XmlPullParser parser) throws Exception { 125 boolean done = false; 126 List<FormField> fields = new ArrayList<FormField>(); 127 while (!done) { 128 int eventType = parser.next(); 129 if (eventType == XmlPullParser.START_TAG) { 130 if (parser.getName().equals("field")) { 131 fields.add(parseField(parser)); 132 } 133 } else if (eventType == XmlPullParser.END_TAG) { 134 if (parser.getName().equals("reported")) { 135 done = true; 136 } 137 } 138 } 139 return new DataForm.ReportedData(fields); 140 } 141 parseOption(XmlPullParser parser)142 private FormField.Option parseOption(XmlPullParser parser) throws Exception { 143 boolean done = false; 144 FormField.Option option = null; 145 String label = parser.getAttributeValue("", "label"); 146 while (!done) { 147 int eventType = parser.next(); 148 if (eventType == XmlPullParser.START_TAG) { 149 if (parser.getName().equals("value")) { 150 option = new FormField.Option(label, parser.nextText()); 151 } 152 } else if (eventType == XmlPullParser.END_TAG) { 153 if (parser.getName().equals("option")) { 154 done = true; 155 } 156 } 157 } 158 return option; 159 } 160 } 161