org.htmlunit.css.CssStyleSheet Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of xlt Show documentation
Show all versions of xlt Show documentation
XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
/*
* Copyright (c) 2002-2024 Gargoyle Software Inc.
* Copyright (c) 2005-2024 Xceptance Software Technologies GmbH
*
* 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.css;
import static java.nio.charset.StandardCharsets.UTF_16BE;
import static java.nio.charset.StandardCharsets.UTF_16LE;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.htmlunit.BrowserVersionFeatures.CSS_PSEUDO_SELECTOR_MS_PLACEHHOLDER;
import static org.htmlunit.BrowserVersionFeatures.CSS_PSEUDO_SELECTOR_PLACEHOLDER_SHOWN;
import static org.htmlunit.BrowserVersionFeatures.HTMLLINK_CHECK_TYPE_FOR_STYLESHEET;
import static org.htmlunit.BrowserVersionFeatures.QUERYSELECTORALL_NOT_IN_QUIRKS;
import static org.htmlunit.BrowserVersionFeatures.QUERYSELECTOR_CSS3_PSEUDO_REQUIRE_ATTACHED_NODE;
import static org.htmlunit.html.DomElement.ATTRIBUTE_NOT_DEFINED;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.Serializable;
import java.io.StringReader;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;
import org.apache.commons.io.ByteOrderMark;
import org.apache.commons.io.IOUtils;
import org.apache.commons.io.input.BOMInputStream;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.htmlunit.BrowserVersion;
import org.htmlunit.Cache;
import org.htmlunit.FailingHttpStatusCodeException;
import org.htmlunit.Page;
import org.htmlunit.SgmlPage;
import org.htmlunit.WebClient;
import org.htmlunit.WebClient.PooledCSS3Parser;
import org.htmlunit.WebRequest;
import org.htmlunit.WebResponse;
import org.htmlunit.WebWindow;
import org.htmlunit.cssparser.dom.AbstractCSSRuleImpl;
import org.htmlunit.cssparser.dom.CSSImportRuleImpl;
import org.htmlunit.cssparser.dom.CSSMediaRuleImpl;
import org.htmlunit.cssparser.dom.CSSRuleListImpl;
import org.htmlunit.cssparser.dom.CSSStyleDeclarationImpl;
import org.htmlunit.cssparser.dom.CSSStyleRuleImpl;
import org.htmlunit.cssparser.dom.CSSStyleSheetImpl;
import org.htmlunit.cssparser.dom.CSSValueImpl;
import org.htmlunit.cssparser.dom.CSSValueImpl.CSSPrimitiveValueType;
import org.htmlunit.cssparser.dom.MediaListImpl;
import org.htmlunit.cssparser.dom.Property;
import org.htmlunit.cssparser.parser.CSSErrorHandler;
import org.htmlunit.cssparser.parser.CSSException;
import org.htmlunit.cssparser.parser.CSSOMParser;
import org.htmlunit.cssparser.parser.InputSource;
import org.htmlunit.cssparser.parser.LexicalUnit;
import org.htmlunit.cssparser.parser.condition.AttributeCondition;
import org.htmlunit.cssparser.parser.condition.Condition;
import org.htmlunit.cssparser.parser.condition.Condition.ConditionType;
import org.htmlunit.cssparser.parser.condition.NotPseudoClassCondition;
import org.htmlunit.cssparser.parser.javacc.CSS3Parser;
import org.htmlunit.cssparser.parser.media.MediaQuery;
import org.htmlunit.cssparser.parser.selector.ChildSelector;
import org.htmlunit.cssparser.parser.selector.DescendantSelector;
import org.htmlunit.cssparser.parser.selector.DirectAdjacentSelector;
import org.htmlunit.cssparser.parser.selector.ElementSelector;
import org.htmlunit.cssparser.parser.selector.GeneralAdjacentSelector;
import org.htmlunit.cssparser.parser.selector.PseudoElementSelector;
import org.htmlunit.cssparser.parser.selector.Selector;
import org.htmlunit.cssparser.parser.selector.Selector.SelectorType;
import org.htmlunit.cssparser.parser.selector.SelectorList;
import org.htmlunit.cssparser.parser.selector.SimpleSelector;
import org.htmlunit.html.DisabledElement;
import org.htmlunit.html.DomElement;
import org.htmlunit.html.DomNode;
import org.htmlunit.html.DomText;
import org.htmlunit.html.HtmlCheckBoxInput;
import org.htmlunit.html.HtmlElement;
import org.htmlunit.html.HtmlForm;
import org.htmlunit.html.HtmlInput;
import org.htmlunit.html.HtmlLink;
import org.htmlunit.html.HtmlOption;
import org.htmlunit.html.HtmlPage;
import org.htmlunit.html.HtmlRadioButtonInput;
import org.htmlunit.html.HtmlStyle;
import org.htmlunit.html.HtmlTextArea;
import org.htmlunit.html.ValidatableElement;
import org.htmlunit.javascript.HtmlUnitScriptable;
import org.htmlunit.javascript.host.css.MediaList;
import org.htmlunit.javascript.host.dom.Document;
import org.htmlunit.javascript.host.html.HTMLDocument;
import org.htmlunit.util.EncodingSniffer;
import org.htmlunit.util.MimeType;
import org.htmlunit.util.UrlUtils;
/**
* A css StyleSheet.
*
* @author Marc Guillemot
* @author Daniel Gredler
* @author Ahmed Ashour
* @author Ronald Brill
* @author Guy Burton
* @author Frank Danek
* @author Carsten Steul
*/
public class CssStyleSheet implements Serializable {
/** "none". */
public static final String NONE = "none";
/** "auto". */
public static final String AUTO = "auto";
/** "static". */
public static final String STATIC = "static";
/** "inherit". */
public static final String INHERIT = "inherit";
/** "initial". */
public static final String INITIAL = "initial";
/** "relative". */
public static final String RELATIVE = "relative";
/** "fixed". */
public static final String FIXED = "fixed";
/** "absolute". */
public static final String ABSOLUTE = "absolute";
/** "repeat". */
public static final String REPEAT = "repeat";
/** "block". */
public static final String BLOCK = "block";
/** "inline". */
public static final String INLINE = "inline";
/** "scroll". */
public static final String SCROLL = "scroll";
private static final Log LOG = LogFactory.getLog(CssStyleSheet.class);
private static final Pattern NTH_NUMERIC = Pattern.compile("\\d+");
private static final Pattern NTH_COMPLEX = Pattern.compile("[+-]?\\d*n\\w*([+-]\\w\\d*)?");
private static final Pattern UNESCAPE_SELECTOR = Pattern.compile("\\\\([\\[\\].:])");
/** The parsed stylesheet which this host object wraps. */
private final CSSStyleSheetImpl wrapped_;
/** The HTML element which owns this stylesheet. */
private final HtmlElement owner_;
/** The CSS import rules and their corresponding stylesheets. */
private final Map imports_ = new HashMap<>();
/** cache parsed media strings */
private static final transient Map media_ = new HashMap<>();
/** This stylesheet's URI (used to resolved contained @import rules). */
private final String uri_;
private boolean enabled_ = true;
/**
* Set of CSS2 pseudo class names.
*/
public static final Set CSS2_PSEUDO_CLASSES;
private static final Set CSS3_PSEUDO_CLASSES;
/**
* Set of CSS4 pseudo class names.
*/
public static final Set CSS4_PSEUDO_CLASSES;
static {
CSS2_PSEUDO_CLASSES = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(
"link", "visited", "hover", "active", "focus", "lang", "first-child")));
final Set css3 = new HashSet<>(Arrays.asList(
"checked", "disabled", "enabled", "indeterminated", "root", "target", "not()",
"nth-child()", "nth-last-child()", "nth-of-type()", "nth-last-of-type()",
"last-child", "first-of-type", "last-of-type", "only-child", "only-of-type", "empty",
"optional", "required", "valid", "invalid"));
css3.addAll(CSS2_PSEUDO_CLASSES);
CSS3_PSEUDO_CLASSES = Collections.unmodifiableSet(css3);
final Set css4 = new HashSet<>(Arrays.asList(
// only what is supported at the moment
"focus-within", "focus-visible"));
css4.addAll(CSS3_PSEUDO_CLASSES);
CSS4_PSEUDO_CLASSES = Collections.unmodifiableSet(css4);
}
/**
* Creates a new stylesheet representing the CSS stylesheet for the specified input source.
* @param element the owning node
* @param source the input source which contains the CSS stylesheet which this stylesheet host object represents
* @param uri this stylesheet's URI (used to resolved contained @import rules)
*/
public CssStyleSheet(final HtmlElement element, final InputSource source, final String uri) {
if (source == null) {
wrapped_ = new CSSStyleSheetImpl();
}
else {
source.setURI(uri);
wrapped_ = parseCSS(source, element.getPage().getWebClient());
}
uri_ = uri;
owner_ = element;
}
/**
* Creates a new stylesheet representing the CSS stylesheet for the specified input source.
* @param element the owning node
* @param styleSheet the source which contains the CSS stylesheet which this stylesheet host object represents
* @param uri this stylesheet's URI (used to resolved contained @import rules)
*/
public CssStyleSheet(final HtmlElement element, final String styleSheet, final String uri) {
CSSStyleSheetImpl css = null;
try (InputSource source = new InputSource(new StringReader(styleSheet))) {
source.setURI(uri);
css = parseCSS(source, element.getPage().getWebClient());
}
catch (final IOException e) {
LOG.error(e.getMessage(), e);
}
wrapped_ = css;
uri_ = uri;
owner_ = element;
}
/**
* Creates a new stylesheet representing the specified CSS stylesheet.
* @param element the owning node
* @param wrapped the CSS stylesheet which this stylesheet host object represents
* @param uri this stylesheet's URI (used to resolved contained @import rules)
*/
public CssStyleSheet(final HtmlElement element, final CSSStyleSheetImpl wrapped, final String uri) {
wrapped_ = wrapped;
uri_ = uri;
owner_ = element;
}
/**
* Returns the wrapped stylesheet.
* @return the wrapped stylesheet
*/
public CSSStyleSheetImpl getWrappedSheet() {
return wrapped_;
}
/**
* Returns this stylesheet's URI (used to resolved contained @import rules).
* For inline styles this is the page uri.
* @return this stylesheet's URI (used to resolved contained @import rules)
*/
public String getUri() {
return uri_;
}
/**
* Returns {@code true} if this stylesheet is enabled.
* @return {@code true} if this stylesheet is enabled
*/
public boolean isEnabled() {
return enabled_;
}
/**
* Sets whether this sheet is enabled or not.
* @param enabled enabled or not
*/
public void setEnabled(final boolean enabled) {
enabled_ = enabled;
}
/**
* Loads the stylesheet at the specified link or href.
* @param element the parent DOM element
* @param link the stylesheet's link (may be {@code null} if a url is specified)
* @param url the stylesheet's url (may be {@code null} if a link is specified)
* @return the loaded stylesheet
*/
public static CssStyleSheet loadStylesheet(final HtmlElement element, final HtmlLink link, final String url) {
final HtmlPage page = (HtmlPage) element.getPage();
String uri = page.getUrl().toExternalForm();
try {
// Retrieve the associated content and respect client settings regarding failing HTTP status codes.
final WebRequest request;
final WebResponse response;
final WebClient client = page.getWebClient();
// TODO HA #1424 start
if (!client.isLoadStaticContent() && !client.getOptions().isCssEnabled())
{
return new CssStyleSheet(element, "", uri);
}
// HA #1424 end
if (link == null) {
// Use href.
final BrowserVersion browser = client.getBrowserVersion();
request = new WebRequest(new URL(url), browser.getCssAcceptHeader(), browser.getAcceptEncodingHeader());
request.setRefererlHeader(page.getUrl());
// our cache is a bit strange;
// loadWebResponse check the cache for the web response
// AND also fixes the request url for the following cache lookups
response = client.loadWebResponse(request);
}
else {
// Use link.
request = link.getWebRequest();
if (client.getBrowserVersion().hasFeature(HTMLLINK_CHECK_TYPE_FOR_STYLESHEET)) {
final String type = link.getTypeAttribute();
if (StringUtils.isNotBlank(type) && !MimeType.TEXT_CSS.equals(type)) {
return new CssStyleSheet(element, "", uri);
}
}
// our cache is a bit strange;
// loadWebResponse check the cache for the web response
// AND also fixes the request url for the following cache lookups
response = link.getWebResponse(true, request);
}
// now we can look into the cache with the fixed request for
// a cached style sheet
final Cache cache = client.getCache();
final Object fromCache = cache.getCachedObject(request);
if (fromCache instanceof CSSStyleSheetImpl) {
uri = request.getUrl().toExternalForm();
return new CssStyleSheet(element, (CSSStyleSheetImpl) fromCache, uri);
}
uri = response.getWebRequest().getUrl().toExternalForm();
client.printContentIfNecessary(response);
client.throwFailingHttpStatusCodeExceptionIfNecessary(response);
// CSS content must have downloaded OK; go ahead and build the corresponding stylesheet.
final CssStyleSheet sheet;
final String contentType = response.getContentType();
if (StringUtils.isEmpty(contentType) || MimeType.TEXT_CSS.equals(contentType)) {
final InputStream in = response.getContentAsStreamWithBomIfApplicable();
if (in == null) {
if (LOG.isWarnEnabled()) {
LOG.warn("Loading stylesheet for url '" + uri + "' returns empty responseData");
}
return new CssStyleSheet(element, "", uri);
}
try {
Charset cssEncoding = Charset.forName("windows-1252");
final Charset contentCharset =
EncodingSniffer.sniffEncodingFromHttpHeaders(response.getResponseHeaders());
if (contentCharset == null && request.getCharset() != null) {
cssEncoding = request.getCharset();
}
else if (contentCharset != null) {
cssEncoding = contentCharset;
}
if (in instanceof BOMInputStream) {
final BOMInputStream bomIn = (BOMInputStream) in;
// there seems to be a bug in BOMInputStream
// we have to call this before hasBOM(ByteOrderMark)
if (bomIn.hasBOM()) {
if (bomIn.hasBOM(ByteOrderMark.UTF_8)) {
cssEncoding = UTF_8;
}
else if (bomIn.hasBOM(ByteOrderMark.UTF_16BE)) {
cssEncoding = UTF_16BE;
}
else if (bomIn.hasBOM(ByteOrderMark.UTF_16LE)) {
cssEncoding = UTF_16LE;
}
}
}
try (InputSource source = new InputSource(new InputStreamReader(in, cssEncoding))) {
source.setURI(uri);
sheet = new CssStyleSheet(element, source, uri);
}
}
finally {
in.close();
}
}
else {
sheet = new CssStyleSheet(element, "", uri);
}
// cache the style sheet
if (!cache.cacheIfPossible(request, response, sheet.getWrappedSheet())) {
// TODO HA #2244 start
/*
response.cleanUp();
*/
// HA #2244 end
}
return sheet;
}
catch (final FailingHttpStatusCodeException e) {
// Got a 404 response or something like that; behave nicely.
if (LOG.isErrorEnabled()) {
LOG.error("Exception loading " + uri, e);
}
return new CssStyleSheet(element, "", uri);
}
catch (final IOException e) {
// Got a basic IO error; behave nicely.
if (LOG.isErrorEnabled()) {
LOG.error("IOException loading " + uri, e);
}
return new CssStyleSheet(element, "", uri);
}
}
/**
* Returns {@code true} if the specified selector selects the specified element.
*
* @param browserVersion the browser version
* @param selector the selector to test
* @param element the element to test
* @param pseudoElement the pseudo element to match, (can be {@code null})
* @param fromQuerySelectorAll whether this is called from {@link DomNode#querySelectorAll(String)}
* @param throwOnSyntax throw exception if the selector syntax is incorrect
* @return {@code true} if it does apply, {@code false} if it doesn't apply
*/
public static boolean selects(final BrowserVersion browserVersion, final Selector selector,
final DomElement element, final String pseudoElement, final boolean fromQuerySelectorAll,
final boolean throwOnSyntax) {
switch (selector.getSelectorType()) {
case ELEMENT_NODE_SELECTOR:
final ElementSelector es = (ElementSelector) selector;
final String name;
final String elementName;
if (element.getPage().hasCaseSensitiveTagNames()) {
name = es.getLocalName();
elementName = element.getLocalName();
}
else {
name = es.getLocalNameLowerCase();
elementName = element.getLowercaseName();
}
if (name == null || name.equals(elementName)) {
final List conditions = es.getConditions();
if (conditions != null) {
for (final Condition condition : conditions) {
if (!selects(browserVersion, condition, element, fromQuerySelectorAll, throwOnSyntax)) {
return false;
}
}
}
return true;
}
return false;
case CHILD_SELECTOR:
final DomNode parentNode = element.getParentNode();
if (parentNode == element.getPage()) {
return false;
}
if (!(parentNode instanceof DomElement)) {
return false; // for instance parent is a DocumentFragment
}
final ChildSelector cs = (ChildSelector) selector;
return selects(browserVersion, cs.getSimpleSelector(), element, pseudoElement,
fromQuerySelectorAll, throwOnSyntax)
&& selects(browserVersion, cs.getAncestorSelector(), (DomElement) parentNode,
pseudoElement, fromQuerySelectorAll, throwOnSyntax);
case DESCENDANT_SELECTOR:
final DescendantSelector ds = (DescendantSelector) selector;
final SimpleSelector simpleSelector = ds.getSimpleSelector();
if (selects(browserVersion, simpleSelector, element, pseudoElement,
fromQuerySelectorAll, throwOnSyntax)) {
DomNode ancestor = element;
if (simpleSelector.getSelectorType() != SelectorType.PSEUDO_ELEMENT_SELECTOR) {
ancestor = ancestor.getParentNode();
}
final Selector dsAncestorSelector = ds.getAncestorSelector();
while (ancestor instanceof DomElement) {
if (selects(browserVersion, dsAncestorSelector, (DomElement) ancestor, pseudoElement,
fromQuerySelectorAll, throwOnSyntax)) {
return true;
}
ancestor = ancestor.getParentNode();
}
}
return false;
case DIRECT_ADJACENT_SELECTOR:
final DirectAdjacentSelector das = (DirectAdjacentSelector) selector;
if (selects(browserVersion, das.getSimpleSelector(), element, pseudoElement,
fromQuerySelectorAll, throwOnSyntax)) {
DomNode prev = element.getPreviousSibling();
while (prev != null && !(prev instanceof DomElement)) {
prev = prev.getPreviousSibling();
}
return prev != null
&& selects(browserVersion, das.getSelector(),
(DomElement) prev, pseudoElement, fromQuerySelectorAll, throwOnSyntax);
}
return false;
case GENERAL_ADJACENT_SELECTOR:
final GeneralAdjacentSelector gas = (GeneralAdjacentSelector) selector;
if (selects(browserVersion, gas.getSimpleSelector(), element, pseudoElement,
fromQuerySelectorAll, throwOnSyntax)) {
for (DomNode prev1 = element.getPreviousSibling(); prev1 != null;
prev1 = prev1.getPreviousSibling()) {
if (prev1 instanceof DomElement
&& selects(browserVersion, gas.getSelector(), (DomElement) prev1,
pseudoElement, fromQuerySelectorAll, throwOnSyntax)) {
return true;
}
}
}
return false;
case PSEUDO_ELEMENT_SELECTOR:
if (pseudoElement != null && pseudoElement.length() != 0 && pseudoElement.charAt(0) == ':') {
final String pseudoName = ((PseudoElementSelector) selector).getLocalName();
return pseudoName.equals(pseudoElement.substring(1));
}
return false;
default:
if (LOG.isErrorEnabled()) {
LOG.error("Unknown CSS selector type '" + selector.getSelectorType() + "'.");
}
return false;
}
}
/**
* INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
* Returns {@code true} if the specified condition selects the specified element.
*
* @param browserVersion the browser version
* @param condition the condition to test
* @param element the element to test
* @param fromQuerySelectorAll whether this is called from {@link DomNode#querySelectorAll(String)}
* @param throwOnSyntax throw exception if the selector syntax is incorrect
* @return {@code true} if it does apply, {@code false} if it doesn't apply
*/
static boolean selects(final BrowserVersion browserVersion,
final Condition condition, final DomElement element,
final boolean fromQuerySelectorAll, final boolean throwOnSyntax) {
switch (condition.getConditionType()) {
case ID_CONDITION:
return condition.getValue().equals(element.getId());
case CLASS_CONDITION:
String v3 = condition.getValue();
if (v3.indexOf('\\') > -1) {
v3 = UNESCAPE_SELECTOR.matcher(v3).replaceAll("$1");
}
final String a3 = element.getAttributeDirect("class");
return selectsWhitespaceSeparated(v3, a3);
case ATTRIBUTE_CONDITION:
final AttributeCondition attributeCondition = (AttributeCondition) condition;
String value = attributeCondition.getValue();
if (value != null) {
if (value.indexOf('\\') > -1) {
value = UNESCAPE_SELECTOR.matcher(value).replaceAll("$1");
}
final String name = attributeCondition.getLocalName();
final String attrValue = element.getAttribute(name);
if (attributeCondition.isCaseInSensitive() || DomElement.TYPE_ATTRIBUTE.equals(name)) {
return ATTRIBUTE_NOT_DEFINED != attrValue && attrValue.equalsIgnoreCase(value);
}
return ATTRIBUTE_NOT_DEFINED != attrValue && attrValue.equals(value);
}
return element.hasAttribute(condition.getLocalName());
case PREFIX_ATTRIBUTE_CONDITION:
final AttributeCondition prefixAttributeCondition = (AttributeCondition) condition;
final String prefixValue = prefixAttributeCondition.getValue();
if (prefixAttributeCondition.isCaseInSensitive()) {
return !"".equals(prefixValue)
&& StringUtils.startsWithIgnoreCase(
element.getAttribute(prefixAttributeCondition.getLocalName()), prefixValue);
}
return !"".equals(prefixValue)
&& element.getAttribute(prefixAttributeCondition.getLocalName()).startsWith(prefixValue);
case SUFFIX_ATTRIBUTE_CONDITION:
final AttributeCondition suffixAttributeCondition = (AttributeCondition) condition;
final String suffixValue = suffixAttributeCondition.getValue();
if (suffixAttributeCondition.isCaseInSensitive()) {
return !"".equals(suffixValue)
&& StringUtils.endsWithIgnoreCase(
element.getAttribute(suffixAttributeCondition.getLocalName()), suffixValue);
}
return !"".equals(suffixValue)
&& element.getAttribute(suffixAttributeCondition.getLocalName()).endsWith(suffixValue);
case SUBSTRING_ATTRIBUTE_CONDITION:
final AttributeCondition substringAttributeCondition = (AttributeCondition) condition;
final String substringValue = substringAttributeCondition.getValue();
if (substringAttributeCondition.isCaseInSensitive()) {
return !"".equals(substringValue)
&& StringUtils.containsIgnoreCase(
element.getAttribute(substringAttributeCondition.getLocalName()), substringValue);
}
return !"".equals(substringValue)
&& element.getAttribute(substringAttributeCondition.getLocalName()).contains(substringValue);
case BEGIN_HYPHEN_ATTRIBUTE_CONDITION:
final AttributeCondition beginHyphenAttributeCondition = (AttributeCondition) condition;
final String v = beginHyphenAttributeCondition.getValue();
final String a = element.getAttribute(beginHyphenAttributeCondition.getLocalName());
if (beginHyphenAttributeCondition.isCaseInSensitive()) {
return selectsHyphenSeparated(
org.htmlunit.util.StringUtils.toRootLowerCase(v),
org.htmlunit.util.StringUtils.toRootLowerCase(a));
}
return selectsHyphenSeparated(v, a);
case ONE_OF_ATTRIBUTE_CONDITION:
final AttributeCondition oneOfAttributeCondition = (AttributeCondition) condition;
final String v2 = oneOfAttributeCondition.getValue();
final String a2 = element.getAttribute(oneOfAttributeCondition.getLocalName());
if (oneOfAttributeCondition.isCaseInSensitive()) {
return selectsOneOf(
org.htmlunit.util.StringUtils.toRootLowerCase(v2),
org.htmlunit.util.StringUtils.toRootLowerCase(a2));
}
return selectsOneOf(v2, a2);
case LANG_CONDITION:
final String lcLang = condition.getValue();
final int lcLangLength = lcLang.length();
for (DomNode node = element; node instanceof HtmlElement; node = node.getParentNode()) {
final String nodeLang = ((HtmlElement) node).getAttributeDirect("lang");
if (ATTRIBUTE_NOT_DEFINED != nodeLang) {
// "en", "en-GB" should be matched by "en" but not "english"
return nodeLang.startsWith(lcLang)
&& (nodeLang.length() == lcLangLength || '-' == nodeLang.charAt(lcLangLength));
}
}
return false;
case NOT_PSEUDO_CLASS_CONDITION:
final NotPseudoClassCondition notPseudoCondition = (NotPseudoClassCondition) condition;
final SelectorList selectorList = notPseudoCondition.getSelectors();
for (final Selector selector : selectorList) {
if (selects(browserVersion, selector, element, null, fromQuerySelectorAll, throwOnSyntax)) {
return false;
}
}
return true;
case PSEUDO_CLASS_CONDITION:
return selectsPseudoClass(browserVersion, condition, element);
default:
if (LOG.isErrorEnabled()) {
LOG.error("Unknown CSS condition type '" + condition.getConditionType() + "'.");
}
return false;
}
}
private static boolean selectsOneOf(final String condition, final String attribute) {
// attribute.equals(condition)
// || attribute.startsWith(condition + " ") || attriubte.endsWith(" " + condition)
// || attribute.contains(" " + condition + " ");
final int conditionLength = condition.length();
if (conditionLength < 1) {
return false;
}
final int attribLength = attribute.length();
if (attribLength < conditionLength) {
return false;
}
if (attribLength > conditionLength) {
if (' ' == attribute.charAt(conditionLength)
&& attribute.startsWith(condition)) {
return true;
}
if (' ' == attribute.charAt(attribLength - conditionLength - 1)
&& attribute.endsWith(condition)) {
return true;
}
if (attribLength + 1 > conditionLength) {
final StringBuilder tmp = new StringBuilder(conditionLength + 2);
tmp.append(' ').append(condition).append(' ');
return attribute.contains(tmp);
}
return false;
}
return attribute.equals(condition);
}
private static boolean selectsHyphenSeparated(final String condition, final String attribute) {
final int conditionLength = condition.length();
if (conditionLength < 1) {
if (attribute != ATTRIBUTE_NOT_DEFINED) {
final int attribLength = attribute.length();
return attribLength == 0 || '-' == attribute.charAt(0);
}
return false;
}
final int attribLength = attribute.length();
if (attribLength < conditionLength) {
return false;
}
if (attribLength > conditionLength) {
return '-' == attribute.charAt(conditionLength)
&& attribute.startsWith(condition);
}
return attribute.equals(condition);
}
private static boolean selectsWhitespaceSeparated(final String condition, final String attribute) {
final int conditionLength = condition.length();
if (conditionLength < 1) {
return false;
}
final int attribLength = attribute.length();
if (attribLength < conditionLength) {
return false;
}
int pos = attribute.indexOf(condition);
while (pos != -1) {
if (pos > 0 && !Character.isWhitespace(attribute.charAt(pos - 1))) {
pos = attribute.indexOf(condition, pos + 1);
}
else {
final int lastPos = pos + condition.length();
if (lastPos >= attribLength || Character.isWhitespace(attribute.charAt(lastPos))) {
return true;
}
pos = attribute.indexOf(condition, pos + 1);
}
}
return false;
}
private static boolean selectsPseudoClass(final BrowserVersion browserVersion,
final Condition condition, final DomElement element) {
if (browserVersion.hasFeature(QUERYSELECTORALL_NOT_IN_QUIRKS)) {
final HtmlUnitScriptable sobj = element.getPage().getScriptableObject();
if (sobj instanceof HTMLDocument && ((HTMLDocument) sobj).getDocumentMode() < 8) {
return false;
}
}
final String value = condition.getValue();
switch (value) {
case "root":
return element == element.getPage().getDocumentElement();
case "enabled":
return element instanceof DisabledElement && !((DisabledElement) element).isDisabled();
case "disabled":
return element instanceof DisabledElement && ((DisabledElement) element).isDisabled();
case "focus":
final HtmlPage htmlPage = element.getHtmlPageOrNull();
if (htmlPage != null) {
final DomElement focus = htmlPage.getFocusedElement();
return element == focus;
}
return false;
case "focus-within":
final HtmlPage htmlPage2 = element.getHtmlPageOrNull();
if (htmlPage2 != null) {
final DomElement focus = htmlPage2.getFocusedElement();
return element == focus || element.isAncestorOf(focus);
}
return false;
case "focus-visible":
final HtmlPage htmlPage3 = element.getHtmlPageOrNull();
if (htmlPage3 != null) {
final DomElement focus = htmlPage3.getFocusedElement();
return element == focus
&& ((element instanceof HtmlInput && !((HtmlInput) element).isReadOnly())
|| (element instanceof HtmlTextArea && !((HtmlTextArea) element).isReadOnly()));
}
return false;
case "checked":
return (element instanceof HtmlCheckBoxInput && ((HtmlCheckBoxInput) element).isChecked())
|| (element instanceof HtmlRadioButtonInput && ((HtmlRadioButtonInput) element).isChecked()
|| (element instanceof HtmlOption && ((HtmlOption) element).isSelected()));
case "required":
return element instanceof HtmlElement && ((HtmlElement) element).isRequired();
case "optional":
return element instanceof HtmlElement && ((HtmlElement) element).isOptional();
case "first-child":
for (DomNode n = element.getPreviousSibling(); n != null; n = n.getPreviousSibling()) {
if (n instanceof DomElement) {
return false;
}
}
return true;
case "last-child":
for (DomNode n = element.getNextSibling(); n != null; n = n.getNextSibling()) {
if (n instanceof DomElement) {
return false;
}
}
return true;
case "first-of-type":
final String firstType = element.getNodeName();
for (DomNode n = element.getPreviousSibling(); n != null; n = n.getPreviousSibling()) {
if (n instanceof DomElement && n.getNodeName().equals(firstType)) {
return false;
}
}
return true;
case "last-of-type":
final String lastType = element.getNodeName();
for (DomNode n = element.getNextSibling(); n != null; n = n.getNextSibling()) {
if (n instanceof DomElement && n.getNodeName().equals(lastType)) {
return false;
}
}
return true;
case "only-child":
for (DomNode n = element.getPreviousSibling(); n != null; n = n.getPreviousSibling()) {
if (n instanceof DomElement) {
return false;
}
}
for (DomNode n = element.getNextSibling(); n != null; n = n.getNextSibling()) {
if (n instanceof DomElement) {
return false;
}
}
return true;
case "only-of-type":
final String type = element.getNodeName();
for (DomNode n = element.getPreviousSibling(); n != null; n = n.getPreviousSibling()) {
if (n instanceof DomElement && n.getNodeName().equals(type)) {
return false;
}
}
for (DomNode n = element.getNextSibling(); n != null; n = n.getNextSibling()) {
if (n instanceof DomElement && n.getNodeName().equals(type)) {
return false;
}
}
return true;
case "valid":
if (element instanceof HtmlForm || element instanceof ValidatableElement) {
return ((HtmlElement) element).isValid();
}
return false;
case "invalid":
if (element instanceof HtmlForm || element instanceof ValidatableElement) {
return !((HtmlElement) element).isValid();
}
return false;
case "empty":
return isEmpty(element);
case "target":
final String ref = element.getPage().getUrl().getRef();
return StringUtils.isNotBlank(ref) && ref.equals(element.getId());
case "hover":
return element.isMouseOver();
case "placeholder-shown":
if (browserVersion.hasFeature(CSS_PSEUDO_SELECTOR_PLACEHOLDER_SHOWN)) {
return element instanceof HtmlInput
&& StringUtils.isEmpty(((HtmlInput) element).getValue())
&& StringUtils.isNotEmpty(((HtmlInput) element).getPlaceholder());
}
case "-ms-input-placeholder":
if (browserVersion.hasFeature(CSS_PSEUDO_SELECTOR_MS_PLACEHHOLDER)) {
return element instanceof HtmlInput
&& StringUtils.isEmpty(((HtmlInput) element).getValue())
&& StringUtils.isNotEmpty(((HtmlInput) element).getPlaceholder());
}
default:
if (value.startsWith("nth-child(")) {
final String nth = value.substring(value.indexOf('(') + 1, value.length() - 1);
int index = 0;
for (DomNode n = element; n != null; n = n.getPreviousSibling()) {
if (n instanceof DomElement) {
index++;
}
}
return getNthElement(nth, index);
}
else if (value.startsWith("nth-last-child(")) {
final String nth = value.substring(value.indexOf('(') + 1, value.length() - 1);
int index = 0;
for (DomNode n = element; n != null; n = n.getNextSibling()) {
if (n instanceof DomElement) {
index++;
}
}
return getNthElement(nth, index);
}
else if (value.startsWith("nth-of-type(")) {
final String nthType = element.getNodeName();
final String nth = value.substring(value.indexOf('(') + 1, value.length() - 1);
int index = 0;
for (DomNode n = element; n != null; n = n.getPreviousSibling()) {
if (n instanceof DomElement && n.getNodeName().equals(nthType)) {
index++;
}
}
return getNthElement(nth, index);
}
else if (value.startsWith("nth-last-of-type(")) {
final String nthLastType = element.getNodeName();
final String nth = value.substring(value.indexOf('(') + 1, value.length() - 1);
int index = 0;
for (DomNode n = element; n != null; n = n.getNextSibling()) {
if (n instanceof DomElement && n.getNodeName().equals(nthLastType)) {
index++;
}
}
return getNthElement(nth, index);
}
return false;
}
}
private static boolean isEmpty(final DomElement element) {
for (DomNode n = element.getFirstChild(); n != null; n = n.getNextSibling()) {
if (n instanceof DomElement || n instanceof DomText) {
return false;
}
}
return true;
}
private static boolean getNthElement(final String nth, final int index) {
if ("odd".equalsIgnoreCase(nth)) {
return index % 2 != 0;
}
if ("even".equalsIgnoreCase(nth)) {
return index % 2 == 0;
}
// (numerator) * n + (denominator)
final int nIndex = nth.indexOf('n');
int denominator = 0;
if (nIndex != -1) {
String value = nth.substring(0, nIndex).trim();
if ("-".equals(value)) {
denominator = -1;
}
else {
if (value.length() > 0 && value.charAt(0) == '+') {
value = value.substring(1);
}
denominator = NumberUtils.toInt(value, 1);
}
}
String value = nth.substring(nIndex + 1).trim();
if (value.length() > 0 && value.charAt(0) == '+') {
value = value.substring(1);
}
final int numerator = NumberUtils.toInt(value, 0);
if (denominator == 0) {
return index == numerator && numerator > 0;
}
final double n = (index - numerator) / (double) denominator;
return n >= 0 && n % 1 == 0;
}
/**
* Parses the CSS at the specified input source. If anything at all goes wrong, this method
* returns an empty stylesheet.
*
* @param source the source from which to retrieve the CSS to be parsed
* @param client the client
* @return the stylesheet parsed from the specified input source
*/
private static CSSStyleSheetImpl parseCSS(final InputSource source, final WebClient client) {
CSSStyleSheetImpl ss;
// use a pooled parser, if any available to avoid expensive recreation
try (PooledCSS3Parser pooledParser = client.getCSS3Parser()) {
final CSSErrorHandler errorHandler = client.getCssErrorHandler();
final CSSOMParser parser = new CSSOMParser(pooledParser);
parser.setErrorHandler(errorHandler);
ss = parser.parseStyleSheet(source, null);
}
catch (final Throwable t) {
if (LOG.isErrorEnabled()) {
LOG.error("Error parsing CSS from '" + toString(source) + "': " + t.getMessage(), t);
}
ss = new CSSStyleSheetImpl();
}
return ss;
}
/**
* Parses the given media string. If anything at all goes wrong, this
* method returns an empty MediaList list.
*
* @param mediaString the source from which to retrieve the media to be parsed
* @param webClient the {@link WebClient} to be used
* @return the media parsed from the specified input source
*/
public static MediaListImpl parseMedia(final String mediaString, final WebClient webClient) {
MediaListImpl media = media_.get(mediaString);
if (media != null) {
return media;
}
// get us a pooled parser for efficiency because a new parser is expensive
try (PooledCSS3Parser pooledParser = webClient.getCSS3Parser()) {
final CSSOMParser parser = new CSSOMParser(pooledParser);
parser.setErrorHandler(webClient.getCssErrorHandler());
media = new MediaListImpl(parser.parseMedia(mediaString));
media_.put(mediaString, media);
return media;
}
catch (final Exception e) {
if (LOG.isErrorEnabled()) {
LOG.error("Error parsing CSS media from '" + mediaString + "': " + e.getMessage(), e);
}
}
media = new MediaListImpl(null);
media_.put(mediaString, media);
return media;
}
/**
* Parses the given media string. If anything at all goes wrong, this
* method returns an empty MediaList list.
*
* @param mediaString the source from which to retrieve the media to be parsed
* @param errorHandler the {@link CSSErrorHandler} to be used
* @return the media parsed from the specified input source
*
* @deprecated as of version 3.8.0; use {@link #parseMedia(String, WebClient)} instead
*/
@Deprecated
public static MediaListImpl parseMedia(final CSSErrorHandler errorHandler, final String mediaString) {
MediaListImpl media = media_.get(mediaString);
if (media != null) {
return media;
}
try {
final CSSOMParser parser = new CSSOMParser(new CSS3Parser());
parser.setErrorHandler(errorHandler);
media = new MediaListImpl(parser.parseMedia(mediaString));
media_.put(mediaString, media);
return media;
}
catch (final Exception e) {
if (LOG.isErrorEnabled()) {
LOG.error("Error parsing CSS media from '" + mediaString + "': " + e.getMessage(), e);
}
}
media = new MediaListImpl(null);
media_.put(mediaString, media);
return media;
}
/**
* Returns the contents of the specified input source, ignoring any {@link IOException}s.
* @param source the input source from which to read
* @return the contents of the specified input source, or an empty string if an {@link IOException} occurs
*/
private static String toString(final InputSource source) {
try {
final Reader reader = source.getReader();
if (null != reader) {
// try to reset to produce some output
if (reader instanceof StringReader) {
final StringReader sr = (StringReader) reader;
sr.reset();
}
return IOUtils.toString(reader);
}
return "";
}
catch (final IOException e) {
LOG.error(e.getMessage(), e);
return "";
}
}
/**
* Validates the list of selectors.
* @param selectorList the selectors
* @param documentMode see {@link Document#getDocumentMode()}
* @param domNode the dom node the query should work on
* @throws CSSException if a selector is invalid
*/
public static void validateSelectors(final SelectorList selectorList, final int documentMode,
final DomNode domNode) throws CSSException {
for (final Selector selector : selectorList) {
if (!isValidSelector(selector, documentMode, domNode)) {
throw new CSSException("Invalid selector: " + selector);
}
}
}
/**
* @param documentMode see {@link Document#getDocumentMode()}
*/
private static boolean isValidSelector(final Selector selector, final int documentMode, final DomNode domNode) {
switch (selector.getSelectorType()) {
case ELEMENT_NODE_SELECTOR:
final List conditions = ((ElementSelector) selector).getConditions();
if (conditions != null) {
for (final Condition condition : conditions) {
if (!isValidCondition(condition, documentMode, domNode)) {
return false;
}
}
}
return true;
case DESCENDANT_SELECTOR:
final DescendantSelector ds = (DescendantSelector) selector;
return isValidSelector(ds.getAncestorSelector(), documentMode, domNode)
&& isValidSelector(ds.getSimpleSelector(), documentMode, domNode);
case CHILD_SELECTOR:
final ChildSelector cs = (ChildSelector) selector;
return isValidSelector(cs.getAncestorSelector(), documentMode, domNode)
&& isValidSelector(cs.getSimpleSelector(), documentMode, domNode);
case DIRECT_ADJACENT_SELECTOR:
final DirectAdjacentSelector das = (DirectAdjacentSelector) selector;
return isValidSelector(das.getSelector(), documentMode, domNode)
&& isValidSelector(das.getSimpleSelector(), documentMode, domNode);
case GENERAL_ADJACENT_SELECTOR:
final GeneralAdjacentSelector gas = (GeneralAdjacentSelector) selector;
return isValidSelector(gas.getSelector(), documentMode, domNode)
&& isValidSelector(gas.getSimpleSelector(), documentMode, domNode);
default:
if (LOG.isWarnEnabled()) {
LOG.warn("Unhandled CSS selector type '"
+ selector.getSelectorType() + "'. Accepting it silently.");
}
return true; // at least in a first time to break less stuff
}
}
/**
* @param documentMode see {@link Document#getDocumentMode()}
*/
private static boolean isValidCondition(final Condition condition, final int documentMode, final DomNode domNode) {
switch (condition.getConditionType()) {
case ATTRIBUTE_CONDITION:
case ID_CONDITION:
case LANG_CONDITION:
case ONE_OF_ATTRIBUTE_CONDITION:
case BEGIN_HYPHEN_ATTRIBUTE_CONDITION:
case CLASS_CONDITION:
case PREFIX_ATTRIBUTE_CONDITION:
case SUBSTRING_ATTRIBUTE_CONDITION:
case SUFFIX_ATTRIBUTE_CONDITION:
return true;
case NOT_PSEUDO_CLASS_CONDITION:
final NotPseudoClassCondition notPseudoCondition = (NotPseudoClassCondition) condition;
final SelectorList selectorList = notPseudoCondition.getSelectors();
for (final Selector selector : selectorList) {
if (!isValidSelector(selector, documentMode, domNode)) {
return false;
}
}
return true;
case PSEUDO_CLASS_CONDITION:
String value = condition.getValue();
if (value.endsWith(")")) {
if (value.endsWith("()")) {
return false;
}
value = value.substring(0, value.indexOf('(') + 1) + ')';
}
if (documentMode < 9) {
return CSS2_PSEUDO_CLASSES.contains(value);
}
if (!CSS2_PSEUDO_CLASSES.contains(value)
&& domNode.hasFeature(QUERYSELECTOR_CSS3_PSEUDO_REQUIRE_ATTACHED_NODE)
&& !domNode.isAttachedToPage()
&& !domNode.hasChildNodes()) {
throw new CSSException("Syntax Error");
}
if ("nth-child()".equals(value)) {
final String arg = StringUtils.substringBetween(condition.getValue(), "(", ")").trim();
return "even".equalsIgnoreCase(arg) || "odd".equalsIgnoreCase(arg)
|| NTH_NUMERIC.matcher(arg).matches()
|| NTH_COMPLEX.matcher(arg).matches();
}
if ("placeholder-shown".equals(value)) {
return domNode.hasFeature(CSS_PSEUDO_SELECTOR_PLACEHOLDER_SHOWN);
}
if ("-ms-input-placeholder".equals(value)) {
return domNode.hasFeature(CSS_PSEUDO_SELECTOR_MS_PLACEHHOLDER);
}
return CSS4_PSEUDO_CLASSES.contains(value);
default:
if (LOG.isWarnEnabled()) {
LOG.warn("Unhandled CSS condition type '"
+ condition.getConditionType() + "'. Accepting it silently.");
}
return true;
}
}
public CssStyleSheet getImportedStyleSheet(final CSSImportRuleImpl importRule) {
CssStyleSheet sheet = imports_.get(importRule);
if (sheet == null) {
final String href = importRule.getHref();
final String url = UrlUtils.resolveUrl(getUri(), href);
sheet = loadStylesheet(owner_, null, url);
imports_.put(importRule, sheet);
}
return sheet;
}
/**
* Returns {@code true} if this stylesheet is active, based on the media types it is associated with (if any).
* @return {@code true} if this stylesheet is active, based on the media types it is associated with (if any)
*/
public boolean isActive() {
final String media;
if (owner_ instanceof HtmlStyle) {
final HtmlStyle style = (HtmlStyle) owner_;
media = style.getMediaAttribute();
}
else if (owner_ instanceof HtmlLink) {
final HtmlLink link = (HtmlLink) owner_;
media = link.getMediaAttribute();
}
else {
return true;
}
if (StringUtils.isBlank(media)) {
return true;
}
final WebWindow webWindow = owner_.getPage().getEnclosingWindow();
final MediaListImpl mediaList = parseMedia(media, webWindow.getWebClient());
return isActive(mediaList, webWindow);
}
/**
* Returns whether the specified {@link MediaList} is active or not.
* @param mediaList the media list
* @param webWindow the {@link WebWindow} for some basic data
* @return whether the specified {@link MediaList} is active or not
*/
public static boolean isActive(final MediaListImpl mediaList, final WebWindow webWindow) {
if (mediaList.getLength() == 0) {
return true;
}
for (int i = 0; i < mediaList.getLength(); i++) {
final MediaQuery mediaQuery = mediaList.mediaQuery(i);
boolean isActive = isActive(mediaQuery, webWindow);
if (mediaQuery.isNot()) {
isActive = !isActive;
}
if (isActive) {
return true;
}
}
return false;
}
private static boolean isActive(final MediaQuery mediaQuery, final WebWindow webWindow) {
final String mediaType = mediaQuery.getMedia();
if ("screen".equalsIgnoreCase(mediaType) || "all".equalsIgnoreCase(mediaType)) {
for (final Property property : mediaQuery.getProperties()) {
final double val;
switch (property.getName()) {
case "max-width":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val < webWindow.getInnerWidth()) {
return false;
}
break;
case "min-width":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val > webWindow.getInnerWidth()) {
return false;
}
break;
case "max-device-width":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val < webWindow.getScreen().getWidth()) {
return false;
}
break;
case "min-device-width":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val > webWindow.getScreen().getWidth()) {
return false;
}
break;
case "max-height":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val < webWindow.getInnerWidth()) {
return false;
}
break;
case "min-height":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val > webWindow.getInnerWidth()) {
return false;
}
break;
case "max-device-height":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val < webWindow.getScreen().getWidth()) {
return false;
}
break;
case "min-device-height":
val = pixelValue(property.getValue(), webWindow);
if (val == -1 || val > webWindow.getScreen().getWidth()) {
return false;
}
break;
case "resolution":
final CSSValueImpl propValue = property.getValue();
val = resolutionValue(propValue);
if (propValue == null) {
return true;
}
if (val == -1 || Math.round(val) != webWindow.getScreen().getDeviceXDPI()) {
return false;
}
break;
case "max-resolution":
val = resolutionValue(property.getValue());
if (val == -1 || val < webWindow.getScreen().getDeviceXDPI()) {
return false;
}
break;
case "min-resolution":
val = resolutionValue(property.getValue());
if (val == -1 || val > webWindow.getScreen().getDeviceXDPI()) {
return false;
}
break;
case "orientation":
final CSSValueImpl cssValue = property.getValue();
if (cssValue == null) {
if (LOG.isWarnEnabled()) {
LOG.warn("CSSValue is null not supported for feature 'orientation'");
}
return true;
}
final String orient = cssValue.getCssText();
if ("portrait".equals(orient)) {
if (webWindow.getInnerWidth() > webWindow.getInnerHeight()) {
return false;
}
}
else if ("landscape".equals(orient)) {
if (webWindow.getInnerWidth() < webWindow.getInnerHeight()) {
return false;
}
}
else {
if (LOG.isWarnEnabled()) {
LOG.warn("CSSValue '" + property.getValue().getCssText()
+ "' not supported for feature 'orientation'.");
}
return false;
}
break;
default:
}
}
return true;
}
else if ("print".equalsIgnoreCase(mediaType)) {
final Page page = webWindow.getEnclosedPage();
if (page instanceof SgmlPage) {
return ((SgmlPage) page).isPrinting();
}
}
return false;
}
private static double pixelValue(final CSSValueImpl cssValue, final WebWindow webWindow) {
if (cssValue == null) {
if (LOG.isWarnEnabled()) {
LOG.warn("CSSValue is null but has to be a 'px', 'em', '%', 'ex', 'ch', "
+ "'vw', 'vh', 'vmin', 'vmax', 'rem', 'mm', 'cm', 'Q', or 'pt' value.");
}
return -1;
}
final LexicalUnit.LexicalUnitType luType = cssValue.getLexicalUnitType();
if (luType != null) {
final int dpi;
switch (luType) {
case PIXEL:
return cssValue.getDoubleValue();
case EM:
// hard coded default for the moment 16px = 1 em
return 16f * cssValue.getDoubleValue();
case PERCENTAGE:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case EX:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case CH:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case VW:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case VH:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case VMIN:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case VMAX:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case REM:
// hard coded default for the moment 16px = 100%
return 0.16f * cssValue.getDoubleValue();
case MILLIMETER:
dpi = webWindow.getScreen().getDeviceXDPI();
return (dpi / 25.4f) * cssValue.getDoubleValue();
case QUATER:
// One quarter of a millimeter. 1Q = 1/40th of 1cm.
dpi = webWindow.getScreen().getDeviceXDPI();
return ((dpi / 25.4f) * cssValue.getDoubleValue()) / 4d;
case CENTIMETER:
dpi = webWindow.getScreen().getDeviceXDPI();
return (dpi / 254f) * cssValue.getDoubleValue();
case POINT:
dpi = webWindow.getScreen().getDeviceXDPI();
return (dpi / 72f) * cssValue.getDoubleValue();
default:
break;
}
}
if (LOG.isWarnEnabled()) {
LOG.warn("CSSValue '" + cssValue.getCssText()
+ "' has to be a 'px', 'em', '%', 'ex', 'ch', "
+ "'vw', 'vh', 'vmin', 'vmax', 'rem', 'mm', 'cm', 'Q', or 'pt' value.");
}
return -1;
}
private static double resolutionValue(final CSSValueImpl cssValue) {
if (cssValue == null) {
if (LOG.isWarnEnabled()) {
LOG.warn("CSSValue is null but has to be a 'dpi', 'dpcm', or 'dppx' value.");
}
return -1;
}
if (cssValue.getPrimitiveType() == CSSPrimitiveValueType.CSS_DIMENSION) {
final String text = cssValue.getCssText();
if (text.endsWith("dpi")) {
return cssValue.getDoubleValue();
}
if (text.endsWith("dpcm")) {
return 2.54f * cssValue.getDoubleValue();
}
if (text.endsWith("dppx")) {
return 96 * cssValue.getDoubleValue();
}
}
if (LOG.isWarnEnabled()) {
LOG.warn("CSSValue '" + cssValue.getCssText() + "' has to be a 'dpi', 'dpcm', or 'dppx' value.");
}
return -1;
}
/**
* Modifies the specified style object by adding any style rules which apply to the specified
* element.
*
* @param style the style to modify
* @param element the element to which style rules must apply in order for them to be added to
* the specified style
* @param pseudoElement a string specifying the pseudo-element to match (may be {@code null})
*/
public void modifyIfNecessary(final ComputedCssStyleDeclaration style, final DomElement element,
final String pseudoElement) {
final BrowserVersion browser = element.getPage().getWebClient().getBrowserVersion();
final List matchingRules =
selects(getRuleIndex(), browser, element, pseudoElement, false);
for (final CSSStyleSheetImpl.SelectorEntry entry : matchingRules) {
final CSSStyleDeclarationImpl dec = entry.getRule().getStyle();
style.applyStyleFromSelector(dec, entry.getSelector());
}
}
private CSSStyleSheetImpl.CSSStyleSheetRuleIndex getRuleIndex() {
final CSSStyleSheetImpl styleSheet = getWrappedSheet();
CSSStyleSheetImpl.CSSStyleSheetRuleIndex index = styleSheet.getRuleIndex();
if (index == null) {
index = new CSSStyleSheetImpl.CSSStyleSheetRuleIndex();
final CSSRuleListImpl ruleList = styleSheet.getCssRules();
index(index, ruleList, new HashSet<>());
styleSheet.setRuleIndex(index);
}
return index;
}
private void index(final CSSStyleSheetImpl.CSSStyleSheetRuleIndex index, final CSSRuleListImpl ruleList,
final Set alreadyProcessing) {
for (final AbstractCSSRuleImpl rule : ruleList.getRules()) {
if (rule instanceof CSSStyleRuleImpl) {
final CSSStyleRuleImpl styleRule = (CSSStyleRuleImpl) rule;
final SelectorList selectors = styleRule.getSelectors();
for (final Selector selector : selectors) {
final SimpleSelector simpleSel = selector.getSimpleSelector();
if (SelectorType.ELEMENT_NODE_SELECTOR == simpleSel.getSelectorType()) {
final ElementSelector es = (ElementSelector) simpleSel;
boolean wasClass = false;
final List conds = es.getConditions();
if (conds != null && conds.size() == 1) {
final Condition c = conds.get(0);
if (ConditionType.CLASS_CONDITION == c.getConditionType()) {
index.addClassSelector(es, c.getValue(), selector, styleRule);
wasClass = true;
}
}
if (!wasClass) {
index.addElementSelector(es, selector, styleRule);
}
}
else {
index.addOtherSelector(selector, styleRule);
}
}
}
else if (rule instanceof CSSImportRuleImpl) {
final CSSImportRuleImpl importRule = (CSSImportRuleImpl) rule;
final CssStyleSheet sheet = getImportedStyleSheet(importRule);
if (!alreadyProcessing.contains(sheet.getUri())) {
final CSSRuleListImpl sheetRuleList = sheet.getWrappedSheet().getCssRules();
alreadyProcessing.add(sheet.getUri());
final MediaListImpl mediaList = importRule.getMedia();
if (mediaList.getLength() == 0 && index.getMediaList().getLength() == 0) {
index(index, sheetRuleList, alreadyProcessing);
}
else {
index(index.addMedia(mediaList), sheetRuleList, alreadyProcessing);
}
}
}
else if (rule instanceof CSSMediaRuleImpl) {
final CSSMediaRuleImpl mediaRule = (CSSMediaRuleImpl) rule;
final MediaListImpl mediaList = mediaRule.getMediaList();
if (mediaList.getLength() == 0 && index.getMediaList().getLength() == 0) {
index(index, mediaRule.getCssRules(), alreadyProcessing);
}
else {
index(index.addMedia(mediaList), mediaRule.getCssRules(), alreadyProcessing);
}
}
}
}
private List selects(
final CSSStyleSheetImpl.CSSStyleSheetRuleIndex index,
final BrowserVersion browserVersion, final DomElement element,
final String pseudoElement, final boolean fromQuerySelectorAll) {
final List matchingRules = new ArrayList<>();
if (isActive(index.getMediaList(), element.getPage().getEnclosingWindow())) {
final String elementName = element.getLowercaseName();
final String[] classes = org.htmlunit.util.StringUtils.splitAtJavaWhitespace(
element.getAttributeDirect("class"));
final Iterator iter =
index.getSelectorEntriesIteratorFor(elementName, classes);
CSSStyleSheetImpl.SelectorEntry entry = iter.next();
while (null != entry) {
if (CssStyleSheet.selects(browserVersion, entry.getSelector(),
element, pseudoElement, fromQuerySelectorAll, false)) {
matchingRules.add(entry);
}
entry = iter.next();
}
for (final CSSStyleSheetImpl.CSSStyleSheetRuleIndex child : index.getChildren()) {
matchingRules.addAll(selects(child, browserVersion,
element, pseudoElement, fromQuerySelectorAll));
}
}
return matchingRules;
}
}