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.html;
16
17 import java.io.Serializable;
18
19 /**
20 * Implementations of this interface receive notifications of changes to the attribute
21 * list on the HtmlElement.
22 *
23 * @see HtmlAttributeChangeEvent
24 *
25 * @author Ahmed Ashour
26 * @author Ronald Brill
27 */
28 public interface HtmlAttributeChangeListener extends Serializable {
29
30 /**
31 * Notification that a new attribute was added to the HtmlElement. Called after the attribute is added.
32 *
33 * @param event the attribute change event
34 */
35 void attributeAdded(HtmlAttributeChangeEvent event);
36
37 /**
38 * Notification that an existing attribute has been removed from the HtmlElement.
39 * Called after the attribute is removed.
40 *
41 * @param event the attribute change event
42 */
43 void attributeRemoved(HtmlAttributeChangeEvent event);
44
45 /**
46 * Notification that an attribute on the HtmlElement has been replaced. Called after the attribute is replaced.
47 *
48 * @param event the attribute change event
49 */
50 void attributeReplaced(HtmlAttributeChangeEvent event);
51
52 }