/*

  * Copyright 2002 - 2007 JEuclid, http://jeuclid.sf.net

  * 

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *      http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 /* $Id: Mroot.java,v bc1d5fde7b73 2009/06/01 14:40:54 maxberger $ */

 package net.sourceforge.jeuclid.elements.presentation.general;

 import java.util.ArrayList;

 import java.util.List;

 import net.sourceforge.jeuclid.LayoutContext;

 import net.sourceforge.jeuclid.context.InlineLayoutContext;

 import net.sourceforge.jeuclid.context.RelativeScriptlevelLayoutContext;

 import net.sourceforge.jeuclid.layout.LayoutableNode;

 import org.apache.batik.dom.AbstractDocument;

 import org.w3c.dom.Node;

 import org.w3c.dom.mathml.MathMLElement;

 /**

  * This class presents a mathematical root.

  * 

  * @version $Revision: bc1d5fde7b73 $

  */

 public final class Mroot extends AbstractRoot {

     /**

      * The XML element from this class.

      */

     public static final String ELEMENT = "mroot";

     private static final long serialVersionUID = 1L;

     /**

      * Default constructor. Sets MathML Namespace.

      * 

      * @param qname

      *            Qualified name.

      * @param odoc

      *            Owner Document.

      */

     public Mroot(final String qname, final AbstractDocument odoc) {

         super(qname, odoc);

     }

     /** {@inheritDoc} */

     @Override

     protected Node newNode() {

         return new Mroot(this.nodeName, this.ownerDocument);

     }

     /** {@inheritDoc} */

     @Override

     protected List<LayoutableNode> getContent() {

         final List<LayoutableNode> mList = new ArrayList<LayoutableNode>(1);

         mList.add((LayoutableNode) this.getRadicand());

         return mList;

     }

     /** {@inheritDoc} */

     public MathMLElement getIndex() {

         return this.getMathElement(1);

     }

     /** {@inheritDoc} */

     public MathMLElement getRadicand() {

         return this.getMathElement(0);

     }

     /** {@inheritDoc} */

     public void setIndex(final MathMLElement index) {

         this.setMathElement(1, index);

     }

     /** {@inheritDoc} */

     public void setRadicand(final MathMLElement radicand) {

         this.setMathElement(0, radicand);

     }

     /** {@inheritDoc} */

     @Override

     public LayoutContext getChildLayoutContext(final int childNum,

             final LayoutContext context) {

         final LayoutContext now = this.applyLocalAttributesToContext(context);

         if (childNum == 0) {

             return now;

         } else {

             // As specified in M2 3.3.3.2

             return new RelativeScriptlevelLayoutContext(

                     new InlineLayoutContext(now), 2);

         }

     }

 }