rtfmapper.java

源码包含生成 PDF 和 HTML 的类库

/*
 * $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:
 * http://www.lowagie.com/iText/
 */

package com.lowagie.text.rtf;

import java.util.ArrayList;

import com.lowagie.text.Anchor;
import com.lowagie.text.Annotation;
import com.lowagie.text.Chapter;
import com.lowagie.text.Chunk;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.Image;
import com.lowagie.text.List;
import com.lowagie.text.ListItem;
import com.lowagie.text.Meta;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.Section;
import com.lowagie.text.SimpleTable;
import com.lowagie.text.Table;
import com.lowagie.text.pdf.PdfPTable;
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.RtfAnnotation;
import com.lowagie.text.rtf.text.RtfChapter;
import com.lowagie.text.rtf.text.RtfChunk;
import com.lowagie.text.rtf.text.RtfNewPage;
import com.lowagie.text.rtf.text.RtfParagraph;
import com.lowagie.text.rtf.text.RtfPhrase;
import com.lowagie.text.rtf.text.RtfSection;
import com.lowagie.text.rtf.text.RtfTab;


/**
 * The RtfMapper provides mappings between com.lowagie.text.* classes
 * and the corresponding com.lowagie.text.rtf.** classes.
 * 
 * @version $Revision: 3532 $
 * @author Mark Hall ([e-mail])
 */
public class RtfMapper {

    /**
     * The RtfDocument this RtfMapper belongs to
     */
    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 {
        ArrayList rtfElements = new ArrayList();

        if(element instanceof RtfBasicElement) {
            RtfBasicElement rtfElement = (RtfBasicElement) element;
            rtfElement.setRtfDocument(this.rtfDoc);
            return new RtfBasicElement[]{rtfElement};
        }
        switch(element.type()) {
    		case Element.CHUNK:
    		    Chunk chunk = (Chunk) element;
    		    if(chunk.hasAttributes()) {
    		        if(chunk.getAttributes().containsKey(Chunk.IMAGE)) {
    		            rtfElements.add(new RtfImage(rtfDoc, (Image) chunk.getAttributes().get(Chunk.IMAGE)));
    		        } 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.IMGRAW:
            case Element.IMGTEMPLATE:
            case Element.JPEG:
                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;
    		case Element.PTABLE:
    			try {
    				rtfElements.add(new RtfTable(rtfDoc, (PdfPTable) element));
    			}
    			catch(ClassCastException e) {
    				rtfElements.add(new RtfTable(rtfDoc, ((SimpleTable) element).createTable()));
    			}
    			break;
        }
        
        return (RtfBasicElement[]) rtfElements.toArray(new RtfBasicElement[rtfElements.size()]);
    }
}