1 /**
2 *
3 * Copyright 2003-2006 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
18 package javax.mail;
19
20 /**
21 * The context in which a piece of message content is contained.
22 *
23 * @version $Rev: 421852 $ $Date: 2006-07-14 03:02:19 -0700 (Fri, 14 Jul 2006) $
24 */
25 public class MessageContext {
26 private final Part part;
27
28 /**
29 * Create a MessageContext object describing the context of the supplied Part.
30 *
31 * @param part the containing part
32 */
33 public MessageContext(Part part) {
34 this.part = part;
35 }
36
37 /**
38 * Return the {@link Part} that contains the content.
39 *
40 * @return the part
41 */
42 public Part getPart() {
43 return part;
44 }
45
46 /**
47 * Return the message that contains the content; if the Part is a {@link Multipart}
48 * then recurse up the chain until a {@link Message} is found.
49 *
50 * @return
51 */
52 public Message getMessage() {
53 return getMessageFrom(part);
54 }
55
56 /**
57 * Return the session associated with the Message containing this Part.
58 *
59 * @return the session associated with this context's root message
60 */
61 public Session getSession() {
62 Message message = getMessage();
63 if (message == null) {
64 return null;
65 } else {
66 return message.session;
67 }
68 }
69
70
71 private Message getMessageFrom(Part p) {
72 while (p != null) {
73 if (p instanceof Message) {
74 return (Message) p;
75 }
76 Multipart mp = ((BodyPart) p).getParent();
77 if (mp == null) {
78 return null;
79 }
80 p = mp.getParent();
81 }
82 return null;
83 }
84 }