1 /*
2 * Copyright (c) 2002-2026 Gargoyle Software Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 * https://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 package org.htmlunit;
16
17 import java.io.IOException;
18 import java.io.Serializable;
19 import java.net.URL;
20
21 /**
22 * This refresh handler immediately refreshes the specified page,
23 * using the specified URL and ignoring the wait time.
24 * <p>
25 * If you want a refresh handler that does not ignore the wait time,
26 * see {@link ThreadedRefreshHandler}.
27 *
28 * @author Mike Bowler
29 * @author Daniel Gredler
30 * @author Marc Guillemot
31 * @author Ahmed Ashour
32 * @author Ronald Brill
33 */
34 public class ImmediateRefreshHandler implements RefreshHandler, Serializable {
35
36 /**
37 * Immediately refreshes the specified page using the specified URL.
38 * @param page the page that is going to be refreshed
39 * @param url the URL where the new page will be loaded
40 * @param seconds the number of seconds to wait before reloading the page (ignored!)
41 * @throws IOException if the refresh fails
42 */
43 @Override
44 public void handleRefresh(final Page page, final URL url, final int seconds) throws IOException {
45 final WebWindow window = page.getEnclosingWindow();
46 if (window == null) {
47 return;
48 }
49 if (page.getUrl().toExternalForm().equals(url.toExternalForm())
50 && HttpMethod.GET == page.getWebResponse().getWebRequest().getHttpMethod()) {
51 final String msg = "Refresh to " + url + " (" + seconds + "s) aborted by HtmlUnit: "
52 + "Attempted to refresh a page using an ImmediateRefreshHandler "
53 + "which could have caused an OutOfMemoryError "
54 + "Please use WaitingRefreshHandler or ThreadedRefreshHandler instead.";
55 throw new RuntimeException(msg);
56 }
57
58 window.getWebClient().getPage(window, new WebRequest(url));
59 }
60
61 }