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XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
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/*
* Copyright (c) 2002-2024 Gargoyle Software Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.htmlunit.javascript.host;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import org.apache.commons.codec.binary.Base64;
import org.htmlunit.Page;
import org.htmlunit.WebWindow;
import org.htmlunit.corejs.javascript.Context;
import org.htmlunit.corejs.javascript.EvaluatorException;
import org.htmlunit.corejs.javascript.Function;
import org.htmlunit.corejs.javascript.FunctionObject;
import org.htmlunit.corejs.javascript.ScriptRuntime;
import org.htmlunit.corejs.javascript.Scriptable;
import org.htmlunit.corejs.javascript.Undefined;
import org.htmlunit.javascript.JavaScriptEngine;
import org.htmlunit.javascript.background.BackgroundJavaScriptFactory;
import org.htmlunit.javascript.background.JavaScriptJob;
/**
* The implementation of {@code WindowOrWorkerGlobalScope}
* to be used by the implementers of the mixin.
*
* @author Ronald Brill
* @author Rural Hunter
*/
public final class WindowOrWorkerGlobalScopeMixin {
/**
* The minimum delay that can be used with setInterval() or setTimeout(). Browser minimums are
* usually in the 10ms to 15ms range, but there's really no reason for us to waste that much time.
*
* http://jsninja.com/Timers#Minimum_Timer_Delay_and_Reliability
*/
private static final int MIN_TIMER_DELAY = 1;
private WindowOrWorkerGlobalScopeMixin() {
}
/**
* Decodes a string of data which has been encoded using base-64 encoding.
* @param encodedData the encoded string
* @return the decoded value
*/
public static String atob(final String encodedData) {
final int l = encodedData.length();
for (int i = 0; i < l; i++) {
if (encodedData.charAt(i) > 255) {
throw new EvaluatorException("Function atob supports only latin1 characters");
}
}
final byte[] bytes = encodedData.getBytes(StandardCharsets.ISO_8859_1);
return new String(Base64.decodeBase64(bytes), StandardCharsets.ISO_8859_1);
}
/**
* Creates a base-64 encoded ASCII string from a string of binary data.
* @param stringToEncode string to encode
* @return the encoded string
*/
public static String btoa(final String stringToEncode) {
final int l = stringToEncode.length();
for (int i = 0; i < l; i++) {
if (stringToEncode.charAt(i) > 255) {
throw new EvaluatorException("Function btoa supports only latin1 characters");
}
}
final byte[] bytes = stringToEncode.getBytes(StandardCharsets.ISO_8859_1);
return new String(Base64.encodeBase64(bytes), StandardCharsets.UTF_8);
}
/**
* Sets a chunk of JavaScript to be invoked at some specified time later.
* The invocation occurs only if the window is opened after the delay
* and does not contain an other page than the one that originated the setTimeout.
*
* @see
* MDN web docs
*
* @param context the JavaScript context
* @param thisObj the scriptable
* @param args the arguments passed into the method
* @param function the function
* @return the id of the created timer
*/
public static Object setTimeout(final Context context, final Scriptable thisObj,
final Object[] args, final Function function) {
if (args.length < 1) {
throw JavaScriptEngine.typeError("Function not provided");
}
final int timeout = JavaScriptEngine.toInt32((args.length > 1) ? args[1] : Undefined.instance);
final Object[] params = (args.length > 2)
? Arrays.copyOfRange(args, 2, args.length)
: ScriptRuntime.emptyArgs;
return setTimeoutIntervalImpl((Window) thisObj, args[0], timeout, true, params);
}
/**
* Sets a chunk of JavaScript to be invoked each time a specified number of milliseconds has elapsed.
*
* @see
* MDN web docs
* @param context the JavaScript context
* @param thisObj the scriptable
* @param args the arguments passed into the method
* @param function the function
* @return the id of the created interval
*/
public static Object setInterval(final Context context, final Scriptable thisObj,
final Object[] args, final Function function) {
if (args.length < 1) {
throw JavaScriptEngine.typeError("Function not provided");
}
final int timeout = JavaScriptEngine.toInt32((args.length > 1) ? args[1] : Undefined.instance);
final Object[] params = (args.length > 2)
? Arrays.copyOfRange(args, 2, args.length)
: ScriptRuntime.emptyArgs;
return setTimeoutIntervalImpl((Window) thisObj, args[0], timeout, false, params);
}
private static int setTimeoutIntervalImpl(final Window window, final Object code,
int timeout, final boolean isTimeout, final Object[] params) {
if (timeout < MIN_TIMER_DELAY) {
timeout = MIN_TIMER_DELAY;
}
final WebWindow webWindow = window.getWebWindow();
final Page page = (Page) window.getDomNodeOrNull();
Integer period = null;
if (!isTimeout) {
period = timeout;
}
if (code instanceof String) {
final String s = (String) code;
final String description = "window.set"
+ (isTimeout ? "Timeout" : "Interval")
+ "(" + s + ", " + timeout + ")";
final JavaScriptJob job = BackgroundJavaScriptFactory.theFactory().
createJavaScriptJob(timeout, period, description, webWindow, s);
return webWindow.getJobManager().addJob(job, page);
}
if (code instanceof Function) {
final Function f = (Function) code;
final String functionName;
if (f instanceof FunctionObject) {
functionName = ((FunctionObject) f).getFunctionName();
}
else {
functionName = String.valueOf(f); // can this happen?
}
final String description = "window.set"
+ (isTimeout ? "Timeout" : "Interval")
+ "(" + functionName + ", " + timeout + ")";
final JavaScriptJob job = BackgroundJavaScriptFactory.theFactory().
createJavaScriptJob(timeout, period, description, webWindow, f, params);
return webWindow.getJobManager().addJob(job, page);
}
throw JavaScriptEngine.reportRuntimeError("Unknown type for function.");
}
}