/*
 * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
/*
 * $Id: MultipartDataContentHandler.java,v 1.3 2006/01/27 12:49:28 vj135062 Exp $
 * $Revision: 1.3 $
 * $Date: 2006/01/27 12:49:28 $
 */


package com.sun.xml.internal.messaging.saaj.soap;

import java.io.*;
import java.awt.datatransfer.DataFlavor;
import javax.activation.*;
import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.MimeMultipart;
import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.ContentType;
import com.sun.xml.internal.messaging.saaj.util.ByteOutputStream;

public class MultipartDataContentHandler implements DataContentHandler {
    private ActivationDataFlavor myDF = new ActivationDataFlavor(
	    com.sun.xml.internal.messaging.saaj.packaging.mime.internet.MimeMultipart.class,
	    "multipart/mixed", 
	    "Multipart");

    /**
     * Return the DataFlavors for this <code>DataContentHandler</code>.
     *
     * @return The DataFlavors
     */
    public DataFlavor[] getTransferDataFlavors() { // throws Exception;
	return new DataFlavor[] { myDF };
    }

    /**
     * Return the Transfer Data of type DataFlavor from InputStream.
     *
     * @param df The DataFlavor
     * @param ins The InputStream corresponding to the data
     * @return String object
     */
    public Object getTransferData(DataFlavor df, DataSource ds) {
	// use myDF.equals to be sure to get ActivationDataFlavor.equals,
	// which properly ignores Content-Type parameters in comparison
	if (myDF.equals(df))
	    return getContent(ds);
	else
	    return null;
    }
    
    /**
     * Return the content.
     */
    public Object getContent(DataSource ds) {
	try {
	    return new MimeMultipart(
                ds, new ContentType(ds.getContentType())); 
	} catch (Exception e) {
	    return null;
	}
    }
    
    /**
     * Write the object to the output stream, using the specific MIME type.
     */
    public void writeTo(Object obj, String mimeType, OutputStream os) 
			throws IOException {
	if (obj instanceof MimeMultipart) {
	    try {
                //TODO: temporarily allow only ByteOutputStream
                // Need to add writeTo(OutputStream) on MimeMultipart
                ByteOutputStream baos = null; 
                if (os instanceof ByteOutputStream) {
                    baos = (ByteOutputStream)os;
                } else {
                    throw new IOException("Input Stream expected to be a com.sun.xml.internal.messaging.saaj.util.ByteOutputStream, but found " + 
                        os.getClass().getName());
                }
		((MimeMultipart)obj).writeTo(baos);
	    } catch (Exception e) {
		throw new IOException(e.toString());
	    }
	}
    }
}

