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.Selector;
056: import org.w3c.css.sac.SimpleSelector;
057: import org.w3c.dom.Element;
058: import org.w3c.dom.Node;
059:
060: /**
061: * This class provides an implementation for the
062: * {@link org.w3c.css.sac.DescendantSelector} interface.
063: *
064: * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
065: * @version $Id$
066: */
067:
068: public class CSSDirectAdjacentSelector extends AbstractSiblingSelector {
069:
070: /**
071: * Creates a new CSSDirectAdjacentSelector object.
072: */
073: public CSSDirectAdjacentSelector(short type, Selector parent,
074: SimpleSelector simple) {
075: super (type, parent, simple);
076: }
077:
078: /**
079: * <b>SAC</b>: Implements {@link
080: * org.w3c.css.sac.Selector#getSelectorType()}.
081: */
082: public short getSelectorType() {
083: return SAC_DIRECT_ADJACENT_SELECTOR;
084: }
085:
086: /**
087: * Tests whether this selector matches the given element.
088: */
089: public boolean match(Element e, String pseudoE) {
090: Node n = e;
091: while ((n = n.getPreviousSibling()) != null
092: && n.getNodeType() != Node.ELEMENT_NODE)
093: ;
094: if (n != null) {
095: return ((ExtendedSelector) getSelector()).match(
096: (Element) n, null)
097: && ((ExtendedSelector) getSiblingSelector()).match(
098: e, pseudoE);
099: }
100: return false;
101: }
102:
103: /**
104: * Fills the given set with the attribute names found in this selector.
105: */
106: public void fillAttributeSet(Set attrSet) {
107: ((ExtendedSelector) getSelector()).fillAttributeSet(attrSet);
108: ((ExtendedSelector) getSiblingSelector())
109: .fillAttributeSet(attrSet);
110: }
111:
112: /**
113: * Returns a representation of the selector.
114: */
115: public String toString() {
116: return getSelector() + " + " + getSiblingSelector();
117: }
118: }
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