001: /*
002:
003: ============================================================================
004: The Apache Software License, Version 1.1
005: ============================================================================
006:
007: Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
008:
009: Redistribution and use in source and binary forms, with or without modifica-
010: tion, are permitted provided that the following conditions are met:
011:
012: 1. Redistributions of source code must retain the above copyright notice,
013: this list of conditions and the following disclaimer.
014:
015: 2. Redistributions in binary form must reproduce the above copyright notice,
016: this list of conditions and the following disclaimer in the documentation
017: and/or other materials provided with the distribution.
018:
019: 3. The end-user documentation included with the redistribution, if any, must
020: include the following acknowledgment: "This product includes software
021: developed by the Apache Software Foundation (http://www.apache.org/)."
022: Alternately, this acknowledgment may appear in the software itself, if
023: and wherever such third-party acknowledgments normally appear.
024:
025: 4. The names "Batik" and "Apache Software Foundation" must not be
026: used to endorse or promote products derived from this software without
027: prior written permission. For written permission, please contact
028: apache@apache.org.
029:
030: 5. Products derived from this software may not be called "Apache", nor may
031: "Apache" appear in their name, without prior written permission of the
032: Apache Software Foundation.
033:
034: THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
035: INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
036: FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
037: APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
038: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
039: DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
040: OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
041: ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
042: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
043: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
044:
045: This software consists of voluntary contributions made by many individuals
046: on behalf of the Apache Software Foundation. For more information on the
047: Apache Software Foundation, please see <http://www.apache.org/>.
048:
049: */
050:
051: package org.apache.batik.css.engine.sac;
052:
053: import java.util.Set;
054:
055: import org.w3c.css.sac.LangCondition;
056: import org.w3c.dom.Element;
057:
058: /**
059: * This class provides an implementation of the
060: * {@link org.w3c.css.sac.LangCondition} interface.
061: *
062: * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
063: * @version $Id$
064: */
065:
066: public class CSSLangCondition implements LangCondition,
067: ExtendedCondition {
068: /**
069: * The language.
070: */
071: protected String lang;
072:
073: /**
074: * Creates a new LangCondition object.
075: */
076: public CSSLangCondition(String lang) {
077: this .lang = lang;
078: }
079:
080: /**
081: * Indicates whether some other object is "equal to" this one.
082: * @param obj the reference object with which to compare.
083: */
084: public boolean equals(Object obj) {
085: if (obj == null || !(obj.getClass() != getClass())) {
086: return false;
087: }
088: CSSLangCondition c = (CSSLangCondition) obj;
089: return c.lang.equals(lang);
090: }
091:
092: /**
093: * <b>SAC</b>: Implements {@link
094: * org.w3c.css.sac.Condition#getConditionType()}.
095: */
096: public short getConditionType() {
097: return SAC_LANG_CONDITION;
098: }
099:
100: /**
101: * <b>SAC</b>: Implements {@link org.w3c.css.sac.LangCondition#getLang()}.
102: */
103: public String getLang() {
104: return lang;
105: }
106:
107: /**
108: * Returns the specificity of this condition.
109: */
110: public int getSpecificity() {
111: return 1 << 8;
112: }
113:
114: /**
115: * Tests whether this condition matches the given element.
116: */
117: public boolean match(Element e, String pseudoE) {
118: return e.getAttribute("lang").startsWith(getLang());
119: }
120:
121: /**
122: * Fills the given set with the attribute names found in this selector.
123: */
124: public void fillAttributeSet(Set attrSet) {
125: attrSet.add("lang");
126: }
127:
128: /**
129: * Returns a text representation of this object.
130: */
131: public String toString() {
132: return ":lang(" + lang + ")";
133: }
134: }
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