multipart_mixed.java

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package com.sun.mail.handlers;

import java.io.*;
import myjava.awt.datatransfer.DataFlavor;
import javax.activation.*;
import javax.mail.MessagingException;
import javax.mail.internet.*;


public class multipart_mixed implements DataContentHandler {
    private ActivationDataFlavor myDF = new ActivationDataFlavor(
	    javax.mail.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 ds The DataSource corresponding to the data
     * @return String object
     */
    public Object getTransferData(DataFlavor df, DataSource ds)
				throws IOException {
	// 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) throws IOException {
	try {
	    return new MimeMultipart(ds); 
	} catch (MessagingException e) {
	    IOException ioex =
		new IOException("Exception while constructing MimeMultipart");
	    ioex.initCause(e);
	    throw ioex;
	}
    }
    
    /**
     * 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 {
		((MimeMultipart)obj).writeTo(os);
	    } catch (MessagingException e) {
		throw new IOException(e.toString());
	    }
	}
    }
}