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RTF generation library derived from iText-2.1.7. All PDF features and RTF parsing are removed. Code is modernized for Java 8.
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/*
 * $Id:RtfMapper.java 3126 2008-02-07 20:30:46Z hallm $
 *
 * Copyright 2003, 2004 by Mark Hall
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the ?GNU LIBRARY GENERAL PUBLIC LICENSE?), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * https://github.com/osobolev/rtf-gen
 */
package com.lowagie.text.rtf;

import com.lowagie.text.*;
import com.lowagie.text.rtf.document.RtfDocument;
import com.lowagie.text.rtf.document.RtfInfoElement;
import com.lowagie.text.rtf.field.RtfAnchor;
import com.lowagie.text.rtf.graphic.RtfImage;
import com.lowagie.text.rtf.list.RtfList;
import com.lowagie.text.rtf.list.RtfListItem;
import com.lowagie.text.rtf.table.RtfTable;
import com.lowagie.text.rtf.text.*;

import java.util.ArrayList;

/**
 * The RtfMapper provides mappings between com.lowagie.text.* classes
 * and the corresponding com.lowagie.text.rtf.** classes.
 *
 * @author Mark Hall ([email protected])
 * @version $Revision: 3868 $
 */
public class RtfMapper {

    /**
     * The RtfDocument this RtfMapper belongs to
     */
    private final RtfDocument rtfDoc;

    /**
     * Constructs a RtfMapper for a RtfDocument
     *
     * @param doc The RtfDocument this RtfMapper belongs to
     */
    public RtfMapper(RtfDocument doc) {
        this.rtfDoc = doc;
    }

    /**
     * Takes an Element subclass and returns an array of RtfBasicElement
     * subclasses, that contained the mapped RTF equivalent to the Element
     * passed in.
     *
     * @param element The Element to wrap
     * @return An array of RtfBasicElement wrapping the Element
     * @throws DocumentException
     */
    public RtfBasicElement[] mapElement(Element element) throws DocumentException {
        if (element instanceof RtfBasicElement) {
            RtfBasicElement rtfElement = (RtfBasicElement) element;
            rtfElement.setRtfDocument(this.rtfDoc);
            return new RtfBasicElement[] {rtfElement};
        }
        java.util.List rtfElements = new ArrayList<>();
        switch (element.type()) {
        case Element.CHUNK:
            Chunk chunk = (Chunk) element;
            if (chunk.hasAttributes()) {
                if (chunk.getAttributes().containsKey(Chunk.IMAGE)) {
                    rtfElements.add(new RtfImage(rtfDoc, chunk.getImage()));
                } else if (chunk.getAttributes().containsKey(Chunk.NEWPAGE)) {
                    rtfElements.add(new RtfNewPage(rtfDoc));
                } else if (chunk.getAttributes().containsKey(Chunk.TAB)) {
                    Float tabPos = (Float) ((Object[]) chunk.getAttributes().get(Chunk.TAB))[1];
                    RtfTab tab = new RtfTab(tabPos.floatValue(), RtfTab.TAB_LEFT_ALIGN);
                    tab.setRtfDocument(rtfDoc);
                    rtfElements.add(tab);
                    rtfElements.add(new RtfChunk(rtfDoc, new Chunk("\t")));
                } else {
                    rtfElements.add(new RtfChunk(rtfDoc, (Chunk) element));
                }
            } else {
                rtfElements.add(new RtfChunk(rtfDoc, (Chunk) element));
            }
            break;
        case Element.PHRASE:
            rtfElements.add(new RtfPhrase(rtfDoc, (Phrase) element));
            break;
        case Element.PARAGRAPH:
            rtfElements.add(new RtfParagraph(rtfDoc, (Paragraph) element));
            break;
        case Element.ANCHOR:
            rtfElements.add(new RtfAnchor(rtfDoc, (Anchor) element));
            break;
        case Element.ANNOTATION:
            rtfElements.add(new RtfAnnotation(rtfDoc, (Annotation) element));
            break;
        case Element.FOOTNOTE:
            rtfElements.add(new RtfFootnote(rtfDoc, (Footnote) element));
            break;
        case Element.IMAGE:
            rtfElements.add(new RtfImage(rtfDoc, (Image) element));
            break;
        case Element.AUTHOR:
        case Element.SUBJECT:
        case Element.KEYWORDS:
        case Element.TITLE:
        case Element.PRODUCER:
        case Element.CREATIONDATE:
            rtfElements.add(new RtfInfoElement(rtfDoc, (Meta) element));
            break;
        case Element.LIST:
            rtfElements.add(new RtfList(rtfDoc, (List) element));    // TODO: Testing
            break;
        case Element.LISTITEM:
            rtfElements.add(new RtfListItem(rtfDoc, (ListItem) element));    // TODO: Testing
            break;
        case Element.SECTION:
            rtfElements.add(new RtfSection(rtfDoc, (Section) element));
            break;
        case Element.CHAPTER:
            rtfElements.add(new RtfChapter(rtfDoc, (Chapter) element));
            break;
        case Element.TABLE:
            try {
                rtfElements.add(new RtfTable(rtfDoc, (Table) element));
            } catch (ClassCastException e) {
                rtfElements.add(new RtfTable(rtfDoc, ((SimpleTable) element).createTable()));
            }
            break;
        }

        return rtfElements.toArray(new RtfBasicElement[0]);
    }
}