ohair@286: /*
alanb@368:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.messaging.saaj.soap;
ohair@286: 
ohair@286: import java.awt.datatransfer.DataFlavor;
ohair@286: import java.io.*;
ohair@286: import java.awt.*;
ohair@286: 
ohair@286: import javax.activation.*;
ohair@286: 
ohair@286: /**
ohair@286:  * DataContentHandler for image/gif.
ohair@286:  *
ohair@286:  * @author Ana Lindstrom-Tamer
ohair@286:  */
ohair@286: public class GifDataContentHandler extends Component implements DataContentHandler {
ohair@286:     private static ActivationDataFlavor myDF =
ohair@286:         new ActivationDataFlavor(
ohair@286:             java.awt.Image.class,
ohair@286:             "image/gif",
ohair@286:             "GIF Image");
ohair@286: 
ohair@286:     protected ActivationDataFlavor getDF() {
ohair@286:         return myDF;
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Return the DataFlavors for this <code>DataContentHandler</code>.
ohair@286:      *
ohair@286:      * @return The DataFlavors
ohair@286:      */
ohair@286:     public DataFlavor[] getTransferDataFlavors() { // throws Exception;
ohair@286:         return new DataFlavor[] { getDF()};
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Return the Transfer Data of type DataFlavor from InputStream.
ohair@286:      *
ohair@286:      * @param df The DataFlavor
ohair@286:      * @param ins The InputStream corresponding to the data
ohair@286:      * @return String object
ohair@286:      */
ohair@286:     public Object getTransferData(DataFlavor df, DataSource ds)
ohair@286:         throws IOException {
ohair@286:         // use myDF.equals to be sure to get ActivationDataFlavor.equals,
ohair@286:         // which properly ignores Content-Type parameters in comparison
ohair@286:         if (getDF().equals(df))
ohair@286:             return getContent(ds);
ohair@286:         else
ohair@286:             return null;
ohair@286:     }
ohair@286: 
ohair@286:     public Object getContent(DataSource ds) throws IOException {
ohair@286:         InputStream is = ds.getInputStream();
ohair@286:         int pos = 0;
ohair@286:         int count;
ohair@286:         byte buf[] = new byte[1024];
ohair@286: 
ohair@286:         while ((count = is.read(buf, pos, buf.length - pos)) != -1) {
ohair@286:             pos += count;
ohair@286:             if (pos >= buf.length) {
ohair@286:                 int size = buf.length;
ohair@286:                 if (size < 256*1024)
ohair@286:                     size += size;
ohair@286:                 else
ohair@286:                     size += 256*1024;
ohair@286:                 byte tbuf[] = new byte[size];
ohair@286:                 System.arraycopy(buf, 0, tbuf, 0, pos);
ohair@286:                 buf = tbuf;
ohair@286:             }
ohair@286:         }
ohair@286:         Toolkit tk = Toolkit.getDefaultToolkit();
ohair@286:         return tk.createImage(buf, 0, pos);
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Write the object to the output stream, using the specified MIME type.
ohair@286:      */
ohair@286:     public void writeTo(Object obj, String type, OutputStream os)
ohair@286:                         throws IOException {
ohair@286:         if (obj != null && !(obj instanceof Image))
ohair@286:             throw new IOException("\"" + getDF().getMimeType() +
ohair@286:                 "\" DataContentHandler requires Image object, " +
ohair@286:                 "was given object of type " + obj.getClass().toString());
ohair@286: 
ohair@286:         throw new IOException(getDF().getMimeType() + " encoding not supported");
ohair@286:     }
ohair@286: 
ohair@286: 
ohair@286: }