| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 |
| |
| http://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.apache.batik.css.engine.sac; |
| |
| import java.util.Set; |
| |
| import org.apache.batik.util.XMLConstants; |
| |
| import org.w3c.css.sac.LangCondition; |
| import org.w3c.dom.Element; |
| |
| /** |
| * This class provides an implementation of the |
| * {@link org.w3c.css.sac.LangCondition} interface. |
| * |
| * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a> |
| * @version $Id$ |
| */ |
| |
| public class CSSLangCondition |
| implements LangCondition, |
| ExtendedCondition { |
| /** |
| * The language. |
| */ |
| protected String lang; |
| |
| /** |
| * The language with a hyphen suffixed. |
| */ |
| protected String langHyphen; |
| |
| /** |
| * Creates a new LangCondition object. |
| */ |
| public CSSLangCondition(String lang) { |
| this.lang = lang.toLowerCase(); |
| this.langHyphen = lang + '-'; |
| } |
| |
| /** |
| * Indicates whether some other object is "equal to" this one. |
| * @param obj the reference object with which to compare. |
| */ |
| public boolean equals(Object obj) { |
| if (obj == null || (obj.getClass() != getClass())) { |
| return false; |
| } |
| CSSLangCondition c = (CSSLangCondition)obj; |
| return c.lang.equals(lang); |
| } |
| |
| /** |
| * <b>SAC</b>: Implements {@link |
| * org.w3c.css.sac.Condition#getConditionType()}. |
| */ |
| public short getConditionType() { |
| return SAC_LANG_CONDITION; |
| } |
| |
| /** |
| * <b>SAC</b>: Implements {@link org.w3c.css.sac.LangCondition#getLang()}. |
| */ |
| public String getLang() { |
| return lang; |
| } |
| |
| /** |
| * Returns the specificity of this condition. |
| */ |
| public int getSpecificity() { |
| return 1 << 8; |
| } |
| |
| /** |
| * Tests whether this condition matches the given element. |
| */ |
| public boolean match(Element e, String pseudoE) { |
| String s = e.getAttribute("lang").toLowerCase(); |
| if (s.equals(lang) || s.startsWith(langHyphen)) { |
| return true; |
| } |
| s = e.getAttributeNS(XMLConstants.XML_NAMESPACE_URI, |
| XMLConstants.XML_LANG_ATTRIBUTE).toLowerCase(); |
| return s.equals(lang) || s.startsWith(langHyphen); |
| } |
| |
| /** |
| * Fills the given set with the attribute names found in this selector. |
| */ |
| public void fillAttributeSet(Set attrSet) { |
| attrSet.add("lang"); |
| } |
| |
| /** |
| * Returns a text representation of this object. |
| */ |
| public String toString() { |
| return ":lang(" + lang + ')'; |
| } |
| } |