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Java > Open Source Codes > nextapp > echo2 > testapp > thousandmonkeys > ThousandMonkeysApp


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.testapp.thousandmonkeys;
31
32 import nextapp.echo2.app.ApplicationInstance;
33 import nextapp.echo2.app.ContentPane;
34 import nextapp.echo2.app.TaskQueueHandle;
35 import nextapp.echo2.app.Window;
36 import nextapp.echo2.webcontainer.ContainerContext;
37
38 /**
39  * Thousand Monkeys <code>ApplicationInstance</code> implementation.
40  */
41 public class ThousandMonkeysApp extends ApplicationInstance {
42
43     private int iteration;
44     private TaskQueueHandle ghostTaskQueue;
45     private Monkey monkey;
46     
47     /**
48      * @see nextapp.echo2.app.ApplicationInstance#init()
49      */
50     public Window init() {
51         Window window = new Window();
52         window.setTitle("Thousand Monkeys (Start)");
53         ContentPane contentPane = new ContentPane();
54         window.setContent(contentPane);
55         monkey = new Monkey(contentPane);
56         startGhostTask();
57         return window;
58     }
59     
60     /**
61      * Starts the ghost task queue that will push updates to client.
62      */
63     private void startGhostTask() {
64         if (ghostTaskQueue != null) {
65             return;
66         }
67         ghostTaskQueue = createTaskQueue();
68         ContainerContext containerContext =
69                 (ContainerContext) getContextProperty(ContainerContext.CONTEXT_PROPERTY_NAME);
70         containerContext.setTaskQueueCallbackInterval(ghostTaskQueue, 0);
71         GhostTask.start(this, ghostTaskQueue);
72     }
73     
74     /**
75      * Performs a single iteration.
76      */
77     void iterate() {
78         monkey.iterate();
79         getDefaultWindow().setTitle("Thousand Monkeys: Iteration #" + ++iteration);
80     }
81 }
82
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