aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.xml.internal.messaging.saaj.soap;
aoqi@0: 
aoqi@0: import java.awt.datatransfer.DataFlavor;
aoqi@0: import java.io.*;
aoqi@0: import java.awt.*;
aoqi@0: 
aoqi@0: import javax.activation.*;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * DataContentHandler for image/gif.
aoqi@0:  *
aoqi@0:  * @author Ana Lindstrom-Tamer
aoqi@0:  */
aoqi@0: public class GifDataContentHandler extends Component implements DataContentHandler {
aoqi@0:     private static ActivationDataFlavor myDF =
aoqi@0:         new ActivationDataFlavor(
aoqi@0:             java.awt.Image.class,
aoqi@0:             "image/gif",
aoqi@0:             "GIF Image");
aoqi@0: 
aoqi@0:     protected ActivationDataFlavor getDF() {
aoqi@0:         return myDF;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return the DataFlavors for this <code>DataContentHandler</code>.
aoqi@0:      *
aoqi@0:      * @return The DataFlavors
aoqi@0:      */
aoqi@0:     public DataFlavor[] getTransferDataFlavors() { // throws Exception;
aoqi@0:         return new DataFlavor[] { getDF()};
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Return the Transfer Data of type DataFlavor from InputStream.
aoqi@0:      *
aoqi@0:      * @param df The DataFlavor
aoqi@0:      * @param ins The InputStream corresponding to the data
aoqi@0:      * @return String object
aoqi@0:      */
aoqi@0:     public Object getTransferData(DataFlavor df, DataSource ds)
aoqi@0:         throws IOException {
aoqi@0:         // use myDF.equals to be sure to get ActivationDataFlavor.equals,
aoqi@0:         // which properly ignores Content-Type parameters in comparison
aoqi@0:         if (getDF().equals(df))
aoqi@0:             return getContent(ds);
aoqi@0:         else
aoqi@0:             return null;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public Object getContent(DataSource ds) throws IOException {
aoqi@0:         InputStream is = ds.getInputStream();
aoqi@0:         int pos = 0;
aoqi@0:         int count;
aoqi@0:         byte buf[] = new byte[1024];
aoqi@0: 
aoqi@0:         while ((count = is.read(buf, pos, buf.length - pos)) != -1) {
aoqi@0:             pos += count;
aoqi@0:             if (pos >= buf.length) {
aoqi@0:                 int size = buf.length;
aoqi@0:                 if (size < 256*1024)
aoqi@0:                     size += size;
aoqi@0:                 else
aoqi@0:                     size += 256*1024;
aoqi@0:                 byte tbuf[] = new byte[size];
aoqi@0:                 System.arraycopy(buf, 0, tbuf, 0, pos);
aoqi@0:                 buf = tbuf;
aoqi@0:             }
aoqi@0:         }
aoqi@0:         Toolkit tk = Toolkit.getDefaultToolkit();
aoqi@0:         return tk.createImage(buf, 0, pos);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Write the object to the output stream, using the specified MIME type.
aoqi@0:      */
aoqi@0:     public void writeTo(Object obj, String type, OutputStream os)
aoqi@0:                         throws IOException {
aoqi@0:         if (obj != null && !(obj instanceof Image))
aoqi@0:             throw new IOException("\"" + getDF().getMimeType() +
aoqi@0:                 "\" DataContentHandler requires Image object, " +
aoqi@0:                 "was given object of type " + obj.getClass().toString());
aoqi@0: 
aoqi@0:         throw new IOException(getDF().getMimeType() + " encoding not supported");
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0: }