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Java > Open Source Codes > nextapp > echo2 > webrender > servermessage > ServerDelayMessageUpdate


1 /*
2  * This file is part of the Echo Web Application Framework (hereinafter "Echo").
3  * Copyright (C) 2002-2005 NextApp, Inc.
4  *
5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6  *
7  * The contents of this file are subject to the Mozilla Public License Version
8  * 1.1 (the "License"); you may not use this file except in compliance with
9  * the License. You may obtain a copy of the License at
10  * http://www.mozilla.org/MPL/
11  *
12  * Software distributed under the License is distributed on an "AS IS" basis,
13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14  * for the specific language governing rights and limitations under the
15  * License.
16  *
17  * Alternatively, the contents of this file may be used under the terms of
18  * either the GNU General Public License Version 2 or later (the "GPL"), or
19  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20  * in which case the provisions of the GPL or the LGPL are applicable instead
21  * of those above. If you wish to allow use of your version of this file only
22  * under the terms of either the GPL or the LGPL, and not to allow others to
23  * use your version of this file under the terms of the MPL, indicate your
24  * decision by deleting the provisions above and replace them with the notice
25  * and other provisions required by the GPL or the LGPL. If you do not delete
26  * the provisions above, a recipient may use your version of this file under
27  * the terms of any one of the MPL, the GPL or the LGPL.
28  */
29
30 package nextapp.echo2.webrender.servermessage;
31
32 import nextapp.echo2.webrender.ServerDelayMessage;
33 import nextapp.echo2.webrender.ServerMessage;
34 import nextapp.echo2.webrender.output.HtmlDocument;
35
36 import org.w3c.dom.Document JavaDoc;
37 import org.w3c.dom.Element JavaDoc;
38
39 /**
40  * A <code>ServerMessage</code>-utility class to render <Code>EchoServerDelayMessage</code>
41  * message processor directives to configure the client-side message displayed
42  * during short- and long-running server interactions.
43  */
44 public class ServerDelayMessageUpdate {
45     
46     /**
47      * Creates a new <code>setMessage</code> directive.
48      *
49      * @param serverMessage the relevant <code>ServerMessage</code>
50      */
51     public static void renderUpdateDirective(ServerMessage serverMessage, ServerDelayMessage serverDelayMessage) {
52         Document document = serverMessage.getDocument();
53         Element JavaDoc setMessageElement = serverMessage.appendPartDirective(ServerMessage.GROUP_ID_INIT,
54                 "EchoServerDelayMessage.MessageProcessor", "set-message");
55         if (serverDelayMessage == null) {
56             return;
57         }
58         
59         Element JavaDoc contentContainerElement = serverMessage.getDocument().createElement("content");
60         setMessageElement.appendChild(contentContainerElement);
61         
62         Element JavaDoc messageElement = (Element JavaDoc) document.importNode(serverDelayMessage.getMessage(), true);
63         messageElement.setAttribute("xmlns", HtmlDocument.XHTML_1_0_NAMESPACE_URI);
64         
65         if (!ServerDelayMessage.ELEMENT_ID_MESSAGE.equals(messageElement.getAttribute("id"))) {
66             throw new IllegalStateException JavaDoc("Invalid ServerDelayMessage: incorrect root element id: "
67                     + messageElement.getAttribute("id"));
68         }
69         
70         contentContainerElement.appendChild(messageElement);
71     }
72 }
73
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