1 /**
2 *
3 * Copyright 2004 The Apache Software Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.geronimo.activation.handlers;
18
19 import java.awt.datatransfer.DataFlavor;
20 import java.awt.datatransfer.UnsupportedFlavorException;
21 import java.io.IOException;
22 import java.io.InputStreamReader;
23 import java.io.OutputStream;
24 import java.io.OutputStreamWriter;
25 import java.io.Reader;
26 import javax.activation.DataContentHandler;
27 import javax.activation.DataSource;
28
29 /**
30 * @version $Rev: 356022 $ $Date: 2005-12-11 12:58:34 -0800 (Sun, 11 Dec 2005) $
31 */
32 public class AbstractTextHandler implements DataContentHandler {
33 private final DataFlavor flavour;
34
35 public AbstractTextHandler(DataFlavor flavour) {
36 this.flavour = flavour;
37 }
38
39 public DataFlavor[] getTransferDataFlavors() {
40 return new DataFlavor[] {flavour};
41 }
42
43 public Object getTransferData(DataFlavor dataFlavor, DataSource dataSource) throws UnsupportedFlavorException, IOException {
44 return flavour.equals(dataFlavor) ? getContent(dataSource) : null;
45 }
46
47 public Object getContent(DataSource ds) throws IOException {
48
49 Reader reader = new InputStreamReader(ds.getInputStream());
50 StringBuffer result = new StringBuffer(1024);
51 char[] buffer = new char[32768];
52 int count;
53 while ((count = reader.read(buffer)) != -1) {
54 result.append(buffer, 0, count);
55 }
56 return result.toString();
57 }
58
59 public void writeTo(Object o, String mimeType, OutputStream os) throws IOException {
60 String s;
61 if (o instanceof String) {
62 s = (String) o;
63 } else if (o != null) {
64 s = o.toString();
65 } else {
66 return;
67 }
68
69 OutputStreamWriter writer = new OutputStreamWriter(os);
70 writer.write(s);
71 writer.flush();
72 }
73 }