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.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 * A JavaScript object for {@code MessageChannel}.
24 *
25 * @author Ahmed Ashour
26 * @author Ronald Brill
27 */
28 @JsxClass
29 public class MessageChannel extends HtmlUnitScriptable {
30
31 private MessagePort port1_;
32 private MessagePort port2_;
33
34 /**
35 * JavaScript constructor.
36 */
37 @JsxConstructor
38 public void jsConstructor() {
39 // nothing to do
40 }
41
42 /**
43 * Returns {@code port1} property.
44 * @return {@code port1} property.
45 */
46 @JsxGetter
47 public MessagePort getPort1() {
48 if (port1_ == null) {
49 port1_ = new MessagePort();
50 port1_.setParentScope(getParentScope());
51 port1_.setPrototype(getPrototype(port1_.getClass()));
52 }
53 return port1_;
54 }
55
56 /**
57 * Returns {@code port2} property.
58 * @return {@code port2} property.
59 */
60 @JsxGetter
61 public MessagePort getPort2() {
62 if (port2_ == null) {
63 port2_ = new MessagePort(getPort1());
64 port2_.setParentScope(getParentScope());
65 port2_.setPrototype(getPrototype(port2_.getClass()));
66 }
67 return port2_;
68 }
69 }