001/*
002 * $Id: PdfCopyFormsImp.java 4784 2011-03-15 08:33:00Z blowagie $
003 *
004 * This file is part of the iText (R) project.
005 * Copyright (c) 1998-2011 1T3XT BVBA
006 * Authors: Bruno Lowagie, Paulo Soares, et al.
007 *
008 * This program is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU Affero General Public License version 3
010 * as published by the Free Software Foundation with the addition of the
011 * following permission added to Section 15 as permitted in Section 7(a):
012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
014 *
015 * This program is distributed in the hope that it will be useful, but
016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
017 * or FITNESS FOR A PARTICULAR PURPOSE.
018 * See the GNU Affero General Public License for more details.
019 * You should have received a copy of the GNU Affero General Public License
020 * along with this program; if not, see http://www.gnu.org/licenses or write to
021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
022 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
023 * http://itextpdf.com/terms-of-use/
024 *
025 * The interactive user interfaces in modified source and object code versions
026 * of this program must display Appropriate Legal Notices, as required under
027 * Section 5 of the GNU Affero General Public License.
028 *
029 * In accordance with Section 7(b) of the GNU Affero General Public License,
030 * a covered work must retain the producer line in every PDF that is created
031 * or manipulated using iText.
032 *
033 * You can be released from the requirements of the license by purchasing
034 * a commercial license. Buying such a license is mandatory as soon as you
035 * develop commercial activities involving the iText software without
036 * disclosing the source code of your own applications.
037 * These activities include: offering paid services to customers as an ASP,
038 * serving PDFs on the fly in a web application, shipping iText with a closed
039 * source product.
040 *
041 * For more information, please contact iText Software Corp. at this
042 * address: sales@itextpdf.com
043 */
044package com.itextpdf.text.pdf;
045
046import java.io.OutputStream;
047import java.util.Map;
048
049import com.itextpdf.text.DocumentException;
050import com.itextpdf.text.error_messages.MessageLocalization;
051import com.itextpdf.text.pdf.AcroFields.Item;
052
053/**
054 * Allows you to add one (or more) existing PDF document(s)
055 * and add the form(s) of (an)other PDF document(s).
056 * @since 2.1.5
057 */
058class PdfCopyFormsImp extends PdfCopyFieldsImp {
059
060    /**
061   * This sets up the output document
062   * @param os The Outputstream pointing to the output document
063   * @throws DocumentException
064   */
065    PdfCopyFormsImp(OutputStream os) throws DocumentException {
066        super(os);
067    }
068
069    /**
070     * This method feeds in the source document
071     * @param reader The PDF reader containing the source document
072     * @throws DocumentException
073     */
074    public void copyDocumentFields(PdfReader reader) throws DocumentException {
075        if (!reader.isOpenedWithFullPermissions())
076            throw new IllegalArgumentException(MessageLocalization.getComposedMessage("pdfreader.not.opened.with.owner.password"));
077        if (readers2intrefs.containsKey(reader)) {
078            reader = new PdfReader(reader);
079        }
080        else {
081            if (reader.isTampered())
082                throw new DocumentException(MessageLocalization.getComposedMessage("the.document.was.reused"));
083            reader.consolidateNamedDestinations();
084            reader.setTampered(true);
085        }
086        reader.shuffleSubsetNames();
087        readers2intrefs.put(reader, new IntHashtable());
088        fields.add(reader.getAcroFields());
089        updateCalculationOrder(reader);
090    }
091
092    /**
093     * This merge fields is slightly different from the mergeFields method
094     * of PdfCopyFields.
095     */
096    @Override
097    void mergeFields() {
098        for (int k = 0; k < fields.size(); ++k) {
099            Map<String, Item> fd = (fields.get(k)).getFields();
100            mergeWithMaster(fd);
101        }
102    }
103
104}