org.jivesoftware.smackx.provider.DataFormProvider Maven / Gradle / Ivy

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Smack is an Open Source XMPP (Jabber) client library for instant messaging and presence. This library provides the client side functionality as specified in the core XMPP specifications as related to the client side of said specifications.
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/**
 * $RCSfile$
 * $Revision: 7071 $
 * $Date: 2007-02-11 18:59:05 -0600 (Sun, 11 Feb 2007) $
 *
 * Copyright 2003-2007 Jive Software.
 *
 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jivesoftware.smackx.provider;

import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smackx.FormField;
import org.jivesoftware.smackx.packet.DataForm;
import org.xmlpull.v1.XmlPullParser;

import java.util.ArrayList;
import java.util.List;

/**
 * The DataFormProvider parses DataForm packets.
 * 
 * @author Gaston Dombiak
 */
public class DataFormProvider implements PacketExtensionProvider {

    /**
     * Creates a new DataFormProvider.
     * ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor
     */
    public DataFormProvider() {
    }

    public PacketExtension parseExtension(XmlPullParser parser) throws Exception {
        boolean done = false;
        StringBuilder buffer = null;
        DataForm dataForm = new DataForm(parser.getAttributeValue("", "type"));
        while (!done) {
            int eventType = parser.next();
            if (eventType == XmlPullParser.START_TAG) {
                if (parser.getName().equals("instructions")) { 
                    dataForm.addInstruction(parser.nextText());
                }
                else if (parser.getName().equals("title")) {                    
                    dataForm.setTitle(parser.nextText());
                }
                else if (parser.getName().equals("field")) {                    
                    dataForm.addField(parseField(parser));
                }
                else if (parser.getName().equals("item")) {                    
                    dataForm.addItem(parseItem(parser));
                }
                else if (parser.getName().equals("reported")) {                    
                    dataForm.setReportedData(parseReported(parser));
                }
            } else if (eventType == XmlPullParser.END_TAG) {
                if (parser.getName().equals(dataForm.getElementName())) {
                    done = true;
                }
            }
        }
        return dataForm;
    }

    private FormField parseField(XmlPullParser parser) throws Exception {
        boolean done = false;
        FormField formField = new FormField(parser.getAttributeValue("", "var"));
        formField.setLabel(parser.getAttributeValue("", "label"));
        formField.setType(parser.getAttributeValue("", "type"));
        while (!done) {
            int eventType = parser.next();
            if (eventType == XmlPullParser.START_TAG) {
                if (parser.getName().equals("desc")) { 
                    formField.setDescription(parser.nextText());
                }
                else if (parser.getName().equals("value")) {                    
                    formField.addValue(parser.nextText());
                }
                else if (parser.getName().equals("required")) {                    
                    formField.setRequired(true);
                }
                else if (parser.getName().equals("option")) {                    
                    formField.addOption(parseOption(parser));
                }
            } else if (eventType == XmlPullParser.END_TAG) {
                if (parser.getName().equals("field")) {
                    done = true;
                }
            }
        }
        return formField;
    }

    private DataForm.Item parseItem(XmlPullParser parser) throws Exception {
        boolean done = false;
        List fields = new ArrayList();
        while (!done) {
            int eventType = parser.next();
            if (eventType == XmlPullParser.START_TAG) {
                if (parser.getName().equals("field")) { 
                    fields.add(parseField(parser));
                }
            } else if (eventType == XmlPullParser.END_TAG) {
                if (parser.getName().equals("item")) {
                    done = true;
                }
            }
        }
        return new DataForm.Item(fields);
    }

    private DataForm.ReportedData parseReported(XmlPullParser parser) throws Exception {
        boolean done = false;
        List fields = new ArrayList();
        while (!done) {
            int eventType = parser.next();
            if (eventType == XmlPullParser.START_TAG) {
                if (parser.getName().equals("field")) { 
                    fields.add(parseField(parser));
                }
            } else if (eventType == XmlPullParser.END_TAG) {
                if (parser.getName().equals("reported")) {
                    done = true;
                }
            }
        }
        return new DataForm.ReportedData(fields);
    }

    private FormField.Option parseOption(XmlPullParser parser) throws Exception {
        boolean done = false;
        FormField.Option option = null;
        String label = parser.getAttributeValue("", "label");
        while (!done) {
            int eventType = parser.next();
            if (eventType == XmlPullParser.START_TAG) {
                if (parser.getName().equals("value")) {
                    option = new FormField.Option(label, parser.nextText());                     
                }
            } else if (eventType == XmlPullParser.END_TAG) {
                if (parser.getName().equals("option")) {
                    done = true;
                }
            }
        }
        return option;
    }
}