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 }