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: AbstractInvisibleJEuclidElement.java,v bc1d5fde7b73 2009/06/01 14:40:54 maxberger $ */
018    
019    package net.sourceforge.jeuclid.elements;
020    
021    import java.util.ArrayList;
022    import java.util.List;
023    
024    import net.sourceforge.jeuclid.layout.LayoutableNode;
025    
026    import org.apache.batik.dom.AbstractDocument;
027    
028    /**
029     * Represents a MathElement with no content.
030     * 
031     * @version $Revision: bc1d5fde7b73 $
032     */
033    public abstract class AbstractInvisibleJEuclidElement extends
034            AbstractJEuclidElement {
035    
036        /**
037         * Default constructor. Sets MathML Namespace.
038         * 
039         * @param qname
040         *            Qualified name.
041         * @param odoc
042         *            Owner Document.
043         */
044        public AbstractInvisibleJEuclidElement(final String qname,
045                final AbstractDocument odoc) {
046            super(qname, odoc);
047        }
048    
049        /** {@inheritDoc} */
050        @Override
051        public List<LayoutableNode> getChildrenToLayout() {
052            return new ArrayList<LayoutableNode>(0);
053        }
054    
055        /** {@inheritDoc} */
056        @Override
057        public List<LayoutableNode> getChildrenToDraw() {
058            return new ArrayList<LayoutableNode>(0);
059        }
060    
061    }