1 /*
2 * Copyright (c) 2002-2025 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.Serializable;
18 import java.util.ArrayList;
19 import java.util.List;
20
21 /**
22 * A simple alert handler that keeps track of alerts in a list.
23 *
24 * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
25 */
26 public class CollectingAlertHandler implements AlertHandler, Serializable {
27
28 private final List<String> collectedAlerts_;
29
30 /**
31 * Creates a new instance, initializing it with an empty list.
32 */
33 public CollectingAlertHandler() {
34 this(new ArrayList<>());
35 }
36
37 /**
38 * Creates an instance with the specified list.
39 *
40 * @param list the list to store alerts in
41 */
42 public CollectingAlertHandler(final List<String> list) {
43 WebAssert.notNull("list", list);
44 collectedAlerts_ = list;
45 }
46
47 /**
48 * Handles the alert. This implementation will store the message in a list
49 * for retrieval later.
50 *
51 * @param page the page that triggered the alert
52 * @param message the message in the alert
53 */
54 @Override
55 public void handleAlert(final Page page, final String message) {
56 collectedAlerts_.add(message);
57 }
58
59 /**
60 * Returns a list containing the message portion of any collected alerts.
61 * @return a list of alert messages
62 */
63 public List<String> getCollectedAlerts() {
64 return collectedAlerts_;
65 }
66
67 /**
68 * Removes all alerts.
69 */
70 public void clear() {
71 collectedAlerts_.clear();
72 }
73 }