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.javascript.host;
16
17 import org.htmlunit.javascript.HtmlUnitScriptable;
18 import org.htmlunit.javascript.configuration.JsxClass;
19 import org.htmlunit.javascript.configuration.JsxConstructor;
20 import org.htmlunit.javascript.configuration.JsxGetter;
21
22 /**
23 * JavaScript host object for {@code MessageChannel}.
24 *
25 * @author Ahmed Ashour
26 * @author Ronald Brill
27 *
28 * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/MessageChannel">MDN Documentation</a>
29 */
30 @JsxClass
31 public class MessageChannel extends HtmlUnitScriptable {
32
33 private MessagePort port1_;
34 private MessagePort port2_;
35
36 /**
37 * Creates an instance of this object.
38 */
39 @JsxConstructor
40 public void jsConstructor() {
41 // nothing to do
42 }
43
44 /**
45 * Returns the {@code port1} property.
46 *
47 * @return the {@code port1} property
48 */
49 @JsxGetter
50 public MessagePort getPort1() {
51 if (port1_ == null) {
52 port1_ = new MessagePort();
53 port1_.setParentScope(getParentScope());
54 port1_.setPrototype(getPrototype(port1_.getClass()));
55 }
56 return port1_;
57 }
58
59 /**
60 * Returns the {@code port2} property.
61 *
62 * @return the {@code port2} property
63 */
64 @JsxGetter
65 public MessagePort getPort2() {
66 if (port2_ == null) {
67 port2_ = new MessagePort(getPort1());
68 port2_.setParentScope(getParentScope());
69 port2_.setPrototype(getPrototype(port2_.getClass()));
70 }
71 return port2_;
72 }
73 }