1 /*

     2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

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

    27 

    28 import java.awt.datatransfer.DataFlavor;

    29 import java.io.*;

    30 import java.awt.*;

    31 

    32 import javax.activation.*;

    33 

    34 /**

    35  * DataContentHandler for image/gif.

    36  *

    37  * @author Ana Lindstrom-Tamer

    38  */

    39 public class GifDataContentHandler extends Component implements DataContentHandler {

    40     private static ActivationDataFlavor myDF =

    41         new ActivationDataFlavor(

    42             java.awt.Image.class,

    43             "image/gif",

    44             "GIF Image");

    45 

    46     protected ActivationDataFlavor getDF() {

    47         return myDF;

    48     }

    49 

    50     /**

    51      * Return the DataFlavors for this <code>DataContentHandler</code>.

    52      *

    53      * @return The DataFlavors

    54      */

    55     public DataFlavor[] getTransferDataFlavors() { // throws Exception;

    56         return new DataFlavor[] { getDF()};

    57     }

    58 

    59     /**

    60      * Return the Transfer Data of type DataFlavor from InputStream.

    61      *

    62      * @param df The DataFlavor

    63      * @param ins The InputStream corresponding to the data

    64      * @return String object

    65      */

    66     public Object getTransferData(DataFlavor df, DataSource ds)

    67         throws IOException {

    68         // use myDF.equals to be sure to get ActivationDataFlavor.equals,

    69         // which properly ignores Content-Type parameters in comparison

    70         if (getDF().equals(df))

    71             return getContent(ds);

    72         else

    73             return null;

    74     }

    75 

    76     public Object getContent(DataSource ds) throws IOException {

    77         InputStream is = ds.getInputStream();

    78         int pos = 0;

    79         int count;

    80         byte buf[] = new byte[1024];

    81 

    82         while ((count = is.read(buf, pos, buf.length - pos)) != -1) {

    83             pos += count;

    84             if (pos >= buf.length) {

    85                 int size = buf.length;

    86                 if (size < 256*1024)

    87                     size += size;

    88                 else

    89                     size += 256*1024;

    90                 byte tbuf[] = new byte[size];

    91                 System.arraycopy(buf, 0, tbuf, 0, pos);

    92                 buf = tbuf;

    93             }

    94         }

    95         Toolkit tk = Toolkit.getDefaultToolkit();

    96         return tk.createImage(buf, 0, pos);

    97     }

    98 

    99     /**

   100      * Write the object to the output stream, using the specified MIME type.

   101      */

   102     public void writeTo(Object obj, String type, OutputStream os)

   103                         throws IOException {

   104         if (obj != null && !(obj instanceof Image))

   105             throw new IOException("\"" + getDF().getMimeType() +

   106                 "\" DataContentHandler requires Image object, " +

   107                 "was given object of type " + obj.getClass().toString());

   108 

   109         throw new IOException(getDF().getMimeType() + " encoding not supported");

   110     }

   111 

   112 

   113 }