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XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
/*
* Copyright (c) 2002-2021 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 com.gargoylesoftware.htmlunit.activex.javascript.msxml;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.commons.lang3.StringUtils;
import com.gargoylesoftware.htmlunit.BrowserVersion;
import com.gargoylesoftware.htmlunit.javascript.SimpleScriptable;
import com.gargoylesoftware.htmlunit.javascript.configuration.ClassConfiguration;
import com.gargoylesoftware.htmlunit.javascript.configuration.ClassConfiguration.ConstantInfo;
import com.gargoylesoftware.htmlunit.javascript.configuration.ClassConfiguration.PropertyInfo;
import net.sourceforge.htmlunit.corejs.javascript.FunctionObject;
import net.sourceforge.htmlunit.corejs.javascript.Scriptable;
import net.sourceforge.htmlunit.corejs.javascript.ScriptableObject;
/**
* JavaScript environment for the MSXML ActiveX library.
*
* @author Frank Danek
*/
public class MSXMLJavaScriptEnvironment {
private final MSXMLConfiguration config_;
private final Map, Scriptable> prototypes_;
/**
* Creates an instance for the given {@link BrowserVersion}.
*
* @param browserVersion the browser version to use
* @throws Exception if something goes wrong
*/
@SuppressWarnings("unchecked")
public MSXMLJavaScriptEnvironment(final BrowserVersion browserVersion) throws Exception {
config_ = MSXMLConfiguration.getInstance(browserVersion);
final Map prototypesPerJSName = new HashMap<>();
final Map, Scriptable> prototypes = new HashMap<>();
// put custom object to be called as very last prototype to call the fallback getter (if any)
for (final ClassConfiguration config : config_.getAll()) {
final ScriptableObject prototype = configureClass(config);
if (config.isJsObject()) {
prototypes.put((Class) config.getHostClass(), prototype);
}
prototypesPerJSName.put(config.getHostClass().getSimpleName(), prototype);
}
// once all prototypes have been build, it's possible to configure the chains
for (final Map.Entry entry : prototypesPerJSName.entrySet()) {
final String name = entry.getKey();
final ClassConfiguration config = config_.getClassConfiguration(name);
Scriptable prototype = entry.getValue();
if (prototype.getPrototype() != null) {
prototype = prototype.getPrototype(); // "double prototype" hack for FF
}
if (!StringUtils.isEmpty(config.getExtendedClassName())) {
final Scriptable parentPrototype = prototypesPerJSName.get(config.getExtendedClassName());
prototype.setPrototype(parentPrototype);
}
}
prototypes_ = prototypes;
}
/**
* Configures the specified class for access via JavaScript.
* @param config the configuration settings for the class to be configured
* @param window the scope within which to configure the class
* @throws InstantiationException if the new class cannot be instantiated
* @throws IllegalAccessException if we don't have access to create the new instance
* @return the created prototype
*/
private static ScriptableObject configureClass(final ClassConfiguration config/*, final Scriptable window*/)
throws InstantiationException, IllegalAccessException {
final Class jsHostClass = config.getHostClass();
final ScriptableObject prototype = (ScriptableObject) jsHostClass.newInstance();
// prototype.setParentScope(window);
configureConstantsPropertiesAndFunctions(config, prototype);
return prototype;
}
/**
* Configures constants, properties and functions on the object.
* @param config the configuration for the object
* @param scriptable the object to configure
*/
private static void configureConstantsPropertiesAndFunctions(final ClassConfiguration config,
final ScriptableObject scriptable) {
// the constants
configureConstants(config, scriptable);
// the properties
final Map propertyMap = config.getPropertyMap();
if (propertyMap != null) {
for (final Map.Entry entry : propertyMap.entrySet()) {
final PropertyInfo info = entry.getValue();
final Method readMethod = info.getReadMethod();
final Method writeMethod = info.getWriteMethod();
scriptable.defineProperty(entry.getKey(), null, readMethod, writeMethod, ScriptableObject.EMPTY);
}
}
final int attributes = ScriptableObject.DONTENUM;
// the functions
final Map functionMap = config.getFunctionMap();
if (functionMap != null) {
for (final Entry functionInfo : functionMap.entrySet()) {
final String functionName = functionInfo.getKey();
final Method method = functionInfo.getValue();
final FunctionObject functionObject = new FunctionObject(functionName, method, scriptable);
scriptable.defineProperty(functionName, functionObject, attributes);
}
}
}
private static void configureConstants(final ClassConfiguration config,
final ScriptableObject scriptable) {
final List constants = config.getConstants();
if (constants != null) {
for (final ConstantInfo constantInfo : constants) {
scriptable.defineProperty(constantInfo.getName(), constantInfo.getValue(),
ScriptableObject.READONLY | ScriptableObject.PERMANENT);
}
}
}
/**
* Gets the class of the JavaScript object for the node class.
* @param c the node class DomNode or some subclass.
* @return {@code null} if none found
*/
@SuppressWarnings("unchecked")
public Class getJavaScriptClass(final Class c) {
return (Class) config_.getDomJavaScriptMappingFor(c);
}
/**
* Returns the prototype object corresponding to the specified HtmlUnit class inside the window scope.
* @param jsClass the class whose prototype is to be returned
* @return the prototype object corresponding to the specified class inside the specified scope
*/
public Scriptable getPrototype(final Class jsClass) {
return prototypes_.get(jsClass);
}
}