001: /*
002: * $Id: GifDataContentHandler.java,v 1.3 2007/07/16 16:41:21 ofung Exp $
003: * $Revision: 1.3 $
004: * $Date: 2007/07/16 16:41:21 $
005: */
006:
007: /*
008: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
009: *
010: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
011: *
012: * The contents of this file are subject to the terms of either the GNU
013: * General Public License Version 2 only ("GPL") or the Common Development
014: * and Distribution License("CDDL") (collectively, the "License"). You
015: * may not use this file except in compliance with the License. You can obtain
016: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
017: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
018: * language governing permissions and limitations under the License.
019: *
020: * When distributing the software, include this License Header Notice in each
021: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
022: * Sun designates this particular file as subject to the "Classpath" exception
023: * as provided by Sun in the GPL Version 2 section of the License file that
024: * accompanied this code. If applicable, add the following below the License
025: * Header, with the fields enclosed by brackets [] replaced by your own
026: * identifying information: "Portions Copyrighted [year]
027: * [name of copyright owner]"
028: *
029: * Contributor(s):
030: *
031: * If you wish your version of this file to be governed by only the CDDL or
032: * only the GPL Version 2, indicate your decision by adding "[Contributor]
033: * elects to include this software in this distribution under the [CDDL or GPL
034: * Version 2] license." If you don't indicate a single choice of license, a
035: * recipient has the option to distribute your version of this file under
036: * either the CDDL, the GPL Version 2 or to extend the choice of license to
037: * its licensees as provided above. However, if you add GPL Version 2 code
038: * and therefore, elected the GPL Version 2 license, then the option applies
039: * only if the new code is made subject to such option by the copyright
040: * holder.
041: */
042: package com.sun.xml.messaging.saaj.soap;
043:
044: import java.awt.datatransfer.DataFlavor;
045: import java.io.*;
046: import com.sun.image.codec.jpeg.*;
047:
048: import java.awt.image.BufferedImage;
049: import java.awt.*;
050: import java.awt.MediaTracker;
051:
052: import javax.activation.*;
053:
054: /**
055: * DataContentHandler for image/gif.
056: *
057: * @author Ana Lindstrom-Tamer
058: */
059: public class GifDataContentHandler extends Component implements
060: DataContentHandler {
061: private static ActivationDataFlavor myDF = new ActivationDataFlavor(
062: java.awt.Image.class, "image/gif", "GIF Image");
063:
064: protected ActivationDataFlavor getDF() {
065: return myDF;
066: }
067:
068: /**
069: * Return the DataFlavors for this <code>DataContentHandler</code>.
070: *
071: * @return The DataFlavors
072: */
073: public DataFlavor[] getTransferDataFlavors() { // throws Exception;
074: return new DataFlavor[] { getDF() };
075: }
076:
077: /**
078: * Return the Transfer Data of type DataFlavor from InputStream.
079: *
080: * @param df The DataFlavor
081: * @param ins The InputStream corresponding to the data
082: * @return String object
083: */
084: public Object getTransferData(DataFlavor df, DataSource ds)
085: throws IOException {
086: // use myDF.equals to be sure to get ActivationDataFlavor.equals,
087: // which properly ignores Content-Type parameters in comparison
088: if (getDF().equals(df))
089: return getContent(ds);
090: else
091: return null;
092: }
093:
094: public Object getContent(DataSource ds) throws IOException {
095: InputStream is = ds.getInputStream();
096: int pos = 0;
097: int count;
098: byte buf[] = new byte[1024];
099:
100: while ((count = is.read(buf, pos, buf.length - pos)) != -1) {
101: pos += count;
102: if (pos >= buf.length) {
103: int size = buf.length;
104: if (size < 256 * 1024)
105: size += size;
106: else
107: size += 256 * 1024;
108: byte tbuf[] = new byte[size];
109: System.arraycopy(buf, 0, tbuf, 0, pos);
110: buf = tbuf;
111: }
112: }
113: Toolkit tk = Toolkit.getDefaultToolkit();
114: return tk.createImage(buf, 0, pos);
115: }
116:
117: /**
118: * Write the object to the output stream, using the specified MIME type.
119: */
120: public void writeTo(Object obj, String type, OutputStream os)
121: throws IOException {
122: if (obj != null && !(obj instanceof Image))
123: throw new IOException("\"" + getDF().getMimeType()
124: + "\" DataContentHandler requires Image object, "
125: + "was given object of type "
126: + obj.getClass().toString());
127:
128: throw new IOException(getDF().getMimeType()
129: + " encoding not supported");
130: }
131:
132: }
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