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Java > Open Source Codes > org > objectweb > jac > aspects > gui > web > RefreshPage


1 /*
2   Copyright (C) 2002-2003 Laurent Martelli <laurent@aopsys.com>
3   
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU Lesser General Public License as
6   published by the Free Software Foundation; either version 2 of the
7   License, or (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12   GNU Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public License
15   along with this program; if not, write to the Free Software
16   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
17
18 package org.objectweb.jac.aspects.gui.web;
19
20 import java.io.IOException JavaDoc;
21 import java.io.PrintWriter JavaDoc;
22 import javax.servlet.http.HttpServletResponse JavaDoc;
23 import org.objectweb.jac.aspects.gui.*;
24 import org.objectweb.jac.core.Collaboration;
25 import org.objectweb.jac.util.Semaphore;
26
27 /**
28  * An HTML page containing a View and a close button.
29  */
30 public class RefreshPage extends Page implements DialogView
31 {
32
33     public RefreshPage(View view) {
34         super(view,false);
35     }
36
37     // Konqueror bug workaround
38 int count = 0;
39
40     // HTMLViewer interface
41 public void genBody(PrintWriter JavaDoc out) throws IOException JavaDoc {
42         ((HTMLViewer)view).genHTML(out);
43
44         out.println(
45             "<script type=\"text/javascript\">"+
46             "setTimeout(\"window.location.href = '"+
47             getBaseURL()+"?event=onRefresh&source="+getId()+
48             "&refresh="+(count++)+"';\", '3000');"+
49             "</script>");
50     }
51
52     HttpServletResponse JavaDoc response;
53     JacRequest jacRequest;
54     Semaphore semaphore = new Semaphore();
55     boolean waiting = false;
56
57     public boolean waitForClose() throws TimeoutException {
58         waiting = true;
59         semaphore.acquire();
60         // Sets the response and request so that the caller can use them
61 WebDisplay.setResponse(response);
62         WebDisplay.setRequest(jacRequest);
63         return true;
64     }
65
66     public void restoreContext() {}
67
68     // WindowListener interface
69
70     public void onRefresh(JacRequest request) {
71         if (waiting) {
72             response = WebDisplay.getResponse();
73             jacRequest = WebDisplay.getRequest();
74             ((WebDisplay)context.getDisplay()).closeWindow(this,false);
75             semaphore.release();
76         } else {
77             super.onRefresh(request);
78         }
79     }
80
81     public void onClose() {
82         throw new RuntimeException JavaDoc("onClose is not implemented for RefreshPage");
83     }
84 }
85
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