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XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
/*
* 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.html;
import static org.htmlunit.BrowserVersionFeatures.HTMLALLCOLLECTION_DO_NOT_CONVERT_STRINGS_TO_NUMBER;
import static org.htmlunit.BrowserVersionFeatures.HTMLALLCOLLECTION_INTEGER_INDEX;
import static org.htmlunit.BrowserVersionFeatures.HTMLALLCOLLECTION_NO_COLLECTION_FOR_MANY_HITS;
import static org.htmlunit.BrowserVersionFeatures.HTMLALLCOLLECTION_NULL_IF_NAMED_ITEM_NOT_FOUND;
import static org.htmlunit.BrowserVersionFeatures.HTMLCOLLECTION_ITEM_FUNCT_SUPPORTS_DOUBLE_INDEX_ALSO;
import static org.htmlunit.javascript.configuration.SupportedBrowser.CHROME;
import static org.htmlunit.javascript.configuration.SupportedBrowser.EDGE;
import static org.htmlunit.javascript.configuration.SupportedBrowser.FF;
import static org.htmlunit.javascript.configuration.SupportedBrowser.FF_ESR;
import java.util.ArrayList;
import java.util.List;
import org.htmlunit.BrowserVersion;
import org.htmlunit.corejs.javascript.Context;
import org.htmlunit.corejs.javascript.Scriptable;
import org.htmlunit.corejs.javascript.Undefined;
import org.htmlunit.html.DomElement;
import org.htmlunit.html.DomNode;
import org.htmlunit.javascript.JavaScriptEngine;
import org.htmlunit.javascript.configuration.JsxClass;
import org.htmlunit.javascript.configuration.JsxConstructor;
/**
* A special {@link HTMLCollection} for document.all.
*
* @author Ronald Brill
* @author Ahmed Ashour
*/
@JsxClass
public class HTMLAllCollection extends HTMLCollection {
/**
* Creates an instance.
*/
public HTMLAllCollection() {
}
/**
* JavaScript constructor.
*/
@Override
@JsxConstructor({CHROME, EDGE, FF, FF_ESR})
public void jsConstructor() {
super.jsConstructor();
}
/**
* Creates an instance.
* @param parentScope parent scope
*/
public HTMLAllCollection(final DomNode parentScope) {
super(parentScope, false);
}
/**
* Returns the item or items corresponding to the specified index or key.
* @param index the index or key corresponding to the element or elements to return
* @return the element or elements corresponding to the specified index or key
* @see MSDN doc
*/
@Override
public Object item(final Object index) {
double numb;
final BrowserVersion browser;
if (index instanceof String) {
final String name = (String) index;
final Object result = namedItem(name);
if (null != result && !JavaScriptEngine.isUndefined(result)) {
return result;
}
numb = Double.NaN;
browser = getBrowserVersion();
if (!browser.hasFeature(HTMLALLCOLLECTION_DO_NOT_CONVERT_STRINGS_TO_NUMBER)) {
numb = JavaScriptEngine.toNumber(index);
}
if (Double.isNaN(numb)) {
return null;
}
}
else {
numb = JavaScriptEngine.toNumber(index);
browser = getBrowserVersion();
}
if (numb < 0) {
return null;
}
if (!browser.hasFeature(HTMLCOLLECTION_ITEM_FUNCT_SUPPORTS_DOUBLE_INDEX_ALSO)
&& (Double.isInfinite(numb) || numb != Math.floor(numb))) {
return null;
}
final Object object = get((int) numb, this);
if (object == NOT_FOUND) {
return null;
}
return object;
}
/**
* {@inheritDoc}
*/
@Override
public final Object namedItem(final String name) {
final List elements = getElements();
// See if there is an element in the element array with the specified id.
final List matching = new ArrayList<>();
final BrowserVersion browser = getBrowserVersion();
for (final DomNode next : elements) {
if (next instanceof DomElement) {
final DomElement elem = (DomElement) next;
if (name.equals(elem.getAttributeDirect(DomElement.NAME_ATTRIBUTE))
|| name.equals(elem.getId())) {
matching.add(elem);
}
}
}
if (matching.size() == 1
|| (matching.size() > 1
&& browser.hasFeature(HTMLALLCOLLECTION_NO_COLLECTION_FOR_MANY_HITS))) {
return getScriptableForElement(matching.get(0));
}
if (matching.isEmpty()) {
if (browser.hasFeature(HTMLALLCOLLECTION_NULL_IF_NAMED_ITEM_NOT_FOUND)) {
return null;
}
return Undefined.instance;
}
// many elements => build a sub collection
final DomNode domNode = getDomNodeOrNull();
final List nodes = new ArrayList<>(matching);
final HTMLCollection collection = new HTMLCollection(domNode, nodes);
collection.setAvoidObjectDetection(true);
return collection;
}
/**
* {@inheritDoc}
*/
@Override
public Object call(final Context cx, final Scriptable scope, final Scriptable thisObj, final Object[] args) {
final BrowserVersion browser = getBrowserVersion();
boolean nullIfNotFound = false;
if (browser.hasFeature(HTMLALLCOLLECTION_INTEGER_INDEX)) {
if (args[0] instanceof Number) {
final double val = ((Number) args[0]).doubleValue();
if (val != (int) val) {
return null;
}
if (val >= 0) {
nullIfNotFound = true;
}
}
else {
final String val = JavaScriptEngine.toString(args[0]);
try {
args[0] = Integer.parseInt(val);
}
catch (final NumberFormatException e) {
// ignore
}
}
}
final Object value = super.call(cx, scope, thisObj, args);
if (nullIfNotFound && JavaScriptEngine.isUndefined(value)) {
return null;
}
return value;
}
/**
* {@inheritDoc}
*/
@Override
protected boolean supportsParentheses() {
return true;
}
}