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.performance;
16
17 import org.htmlunit.corejs.javascript.Scriptable;
18 import org.htmlunit.javascript.JavaScriptEngine;
19 import org.htmlunit.javascript.configuration.JsxClass;
20 import org.htmlunit.javascript.configuration.JsxConstructor;
21 import org.htmlunit.javascript.configuration.JsxFunction;
22 import org.htmlunit.javascript.configuration.JsxGetter;
23 import org.htmlunit.javascript.host.event.EventTarget;
24
25 /**
26 * A JavaScript object for {@code Performance}.
27 *
28 * @author Ahmed Ashour
29 * @author Ronald Brill
30 */
31 @JsxClass
32 public class Performance extends EventTarget {
33 private PerformanceTiming timing_;
34
35 /**
36 * JavaScript constructor.
37 */
38 @Override
39 @JsxConstructor
40 public void jsConstructor() {
41 super.jsConstructor();
42 }
43
44 /**
45 * Returns the {@code navigation} property.
46 * @return the {@code navigation} property
47 */
48 @JsxGetter
49 public PerformanceNavigation getNavigation() {
50 final PerformanceNavigation navigation = new PerformanceNavigation();
51 navigation.setParentScope(getParentScope());
52 navigation.setPrototype(getPrototype(navigation.getClass()));
53 return navigation;
54 }
55
56 /**
57 * Returns the {@code timing} property.
58 * @return the {@code timing} property
59 */
60 @JsxGetter
61 public PerformanceTiming getTiming() {
62 if (timing_ == null) {
63 final PerformanceTiming timing = new PerformanceTiming();
64 timing.setParentScope(getParentScope());
65 timing.setPrototype(getPrototype(timing.getClass()));
66 timing_ = timing;
67 }
68
69 return timing_;
70 }
71
72 /**
73 * @return a timestamp
74 */
75 @JsxFunction
76 public double now() {
77 return System.nanoTime() / 1_000_000d;
78 }
79
80 /**
81 * @return a list of all PerformanceEntry objects for the page.
82 * The list's members (entries) can be created by making performance marks
83 * or measures (for example by calling the mark() method) at explicit points in time.
84 * If you are only interested in performance entries of certain types or that have
85 * certain names, see getEntriesByType() and getEntriesByName().
86 */
87 @JsxFunction
88 public Scriptable getEntries() {
89 return JavaScriptEngine.newArray(this, 0);
90 }
91
92 /**
93 * @return a list of all PerformanceEntry objects for the page.
94 * The list's members (entries) can be created by making performance marks
95 * or measures (for example by calling the mark() method) at explicit points in time.
96 * If you are only interested in performance entries of certain types or that have
97 * certain names, see getEntriesByType() and getEntriesByName().
98 */
99 @JsxFunction
100 public Scriptable getEntriesByName() {
101 return JavaScriptEngine.newArray(this, 0);
102 }
103
104 /**
105 * @return a list of PerformanceEntry objects for a given type. The list's
106 * members (entries) can be created by making performance marks or measures
107 * (for example by calling the mark() method) at explicit points in time.
108 */
109 @JsxFunction
110 public Scriptable getEntriesByType() {
111 return JavaScriptEngine.newArray(this, 0);
112 }
113 }