001    /*
002     * Copyright 2002 - 2007 JEuclid, http://jeuclid.sf.net
003     * 
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *      http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    /* $Id: Msqrt.java,v bc1d5fde7b73 2009/06/01 14:40:54 maxberger $ */
018    
019    package net.sourceforge.jeuclid.elements.presentation.general;
020    
021    import java.util.List;
022    
023    import net.sourceforge.jeuclid.elements.JEuclidElement;
024    import net.sourceforge.jeuclid.layout.LayoutableNode;
025    
026    import org.apache.batik.dom.AbstractDocument;
027    import org.w3c.dom.Node;
028    import org.w3c.dom.mathml.MathMLElement;
029    
030    /**
031     * This class presents a mathematical square root.
032     * 
033     * @version $Revision: bc1d5fde7b73 $
034     */
035    public final class Msqrt extends AbstractRoot {
036    
037        /**
038         * The XML element from this class.
039         */
040        public static final String ELEMENT = "msqrt";
041    
042        private static final long serialVersionUID = 1L;
043    
044        /**
045         * Default constructor. Sets MathML Namespace.
046         * 
047         * @param qname
048         *            Qualified name.
049         * @param odoc
050         *            Owner Document.
051         */
052        public Msqrt(final String qname, final AbstractDocument odoc) {
053            super(qname, odoc);
054        }
055    
056        /** {@inheritDoc} */
057        @Override
058        protected Node newNode() {
059            return new Msqrt(this.nodeName, this.ownerDocument);
060        }
061    
062        /** {@inheritDoc} */
063        @Override
064        protected List<LayoutableNode> getContent() {
065            return this.getChildrenToLayout();
066        }
067    
068        /** {@inheritDoc} */
069        public MathMLElement getIndex() {
070            return null;
071        }
072    
073        /** {@inheritDoc} */
074        public MathMLElement getRadicand() {
075            JEuclidElement retVal;
076            if (this.getMathElementCount() == 1) {
077                retVal = this.getMathElement(0);
078            } else {
079                retVal = new Mrow(Mrow.ELEMENT, this.ownerDocument);
080                retVal.setFakeParent(this);
081                for (int i = 0; i < this.getMathElementCount(); i++) {
082                    retVal.appendChild(this.getMathElement(i));
083                }
084            }
085            return retVal;
086        }
087    
088        /** {@inheritDoc} */
089        public void setIndex(final MathMLElement index) {
090            // Do nothing. There is no index for sqrt elements.
091        }
092    
093        /** {@inheritDoc} */
094        public void setRadicand(final MathMLElement radicand) {
095            while (this.getMathElementCount() > 0) {
096                this.removeChild(this.getMathElement(0));
097            }
098            this.setMathElement(0, radicand);
099        }
100    }