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.parser;
052:
053: import org.w3c.css.sac.Selector;
054: import org.w3c.css.sac.SelectorList;
055:
056: /**
057: * This class implements the {@link SelectorList} interface.
058: *
059: * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
060: * @version $Id$
061: */
062: public class CSSSelectorList implements SelectorList {
063:
064: /**
065: * The list.
066: */
067: protected Selector[] list = new Selector[3];
068:
069: /**
070: * The list length.
071: */
072: protected int length;
073:
074: /**
075: * <b>SAC</b>: Returns the length of this selector list
076: */
077: public int getLength() {
078: return length;
079: }
080:
081: /**
082: * <b>SAC</b>: Returns the selector at the specified index, or
083: * <code>null</code> if this is not a valid index.
084: */
085: public Selector item(int index) {
086: if (index < 0 || index >= length) {
087: return null;
088: }
089: return list[index];
090: }
091:
092: /**
093: * Appends an item to the list.
094: */
095: public void append(Selector item) {
096: if (length == list.length) {
097: Selector[] tmp = list;
098: list = new Selector[list.length * 3 / 2];
099: for (int i = 0; i < tmp.length; i++) {
100: list[i] = tmp[i];
101: }
102: }
103: list[length++] = item;
104: }
105: }
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