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Java > Open Source Codes > com > gargoylesoftware > htmlunit > ImmediateRefreshHandler


1 /*
2  * Copyright (c) 2002, 2005 Gargoyle Software Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * 1. Redistributions of source code must retain the above copyright notice,
8  * this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright notice,
10  * this list of conditions and the following disclaimer in the documentation
11  * and/or other materials provided with the distribution.
12  * 3. The end-user documentation included with the redistribution, if any, must
13  * include the following acknowledgment:
14  *
15  * "This product includes software developed by Gargoyle Software Inc.
16  * (http://www.GargoyleSoftware.com/)."
17  *
18  * Alternately, this acknowledgment may appear in the software itself, if
19  * and wherever such third-party acknowledgments normally appear.
20  * 4. The name "Gargoyle Software" must not be used to endorse or promote
21  * products derived from this software without prior written permission.
22  * For written permission, please contact info@GargoyleSoftware.com.
23  * 5. Products derived from this software may not be called "HtmlUnit", nor may
24  * "HtmlUnit" appear in their name, without prior written permission of
25  * Gargoyle Software Inc.
26  *
27  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
28  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
29  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GARGOYLE
30  * SOFTWARE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
31  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
33  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
36  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37  */
38 package com.gargoylesoftware.htmlunit;
39
40 import java.io.IOException JavaDoc;
41 import java.net.URL JavaDoc;
42
43 /**
44  * The default handler for page refreshes. This refresh handler immediately
45  * refreshes the specified page, using the specified URL and ignoring the
46  * wait time.
47  *
48  * If you want a refresh handler that does not ignore the wait time,
49  * see {@link ThreadedRefreshHandler}.
50  *
51  * @version $Revision: 100 $
52  * @author <a HREF="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
53  * @author Daniel Gredler
54  */
55 public class ImmediateRefreshHandler implements RefreshHandler {
56
57     /**
58      * Immediately refreshes the specified page using the specified URL.
59      * @param page The page that is going to be refreshed.
60      * @param url The URL where the new page will be loaded.
61      * @param seconds The number of seconds to wait before reloading the page (ignored!).
62      * @throws IOException if the refresh fails
63      */
64     public void handleRefresh(final Page page, final URL JavaDoc url, final int seconds) throws IOException JavaDoc {
65         final WebWindow window = page.getEnclosingWindow();
66         if( window == null ) {
67             return;
68         }
69         final WebClient client = window.getWebClient();
70         if( page.getWebResponse().getUrl().toExternalForm().equals( url.toExternalForm() ) ) {
71             final String JavaDoc msg = "Refresh Aborted by HtmlUnit: " +
72                 "Attempted to refresh a page using an ImmediateRefreshHandler " +
73                 "which could have caused an OutOfMemoryError " +
74                 "Please use WaitingRefreshHandler or ThreadedRefreshHandler instead.";
75             throw new RuntimeException JavaDoc(msg);
76         }
77         client.getPage( window, new WebRequestSettings( url ) );
78     }
79
80 }
81
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