/*

  * Copyright 2007 - 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: AbstractSubSuper.java,v bc1d5fde7b73 2009/06/01 14:40:54 maxberger $ */

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

 import net.sourceforge.jeuclid.LayoutContext;

 import net.sourceforge.jeuclid.elements.JEuclidElement;

 import net.sourceforge.jeuclid.layout.LayoutInfo;

 import net.sourceforge.jeuclid.layout.LayoutStage;

 import net.sourceforge.jeuclid.layout.LayoutView;

 import org.apache.batik.dom.AbstractDocument;

 import org.w3c.dom.mathml.MathMLScriptElement;

 /**

  * Generic support for all elements that have a subscript or a superscript

  * attribute.

  * <p>

  * Supported elements: msub, msup, msubsup.

  * 

  * @version $Revision: bc1d5fde7b73 $

  */

 public abstract class AbstractSubSuper extends AbstractScriptElement implements

         MathMLScriptElement {

     /**

      * Default constructor. Sets MathML Namespace.

      * 

      * @param qname

      *            Qualified name.

      * @param odoc

      *            Owner Document.

      */

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

         super(qname, odoc);

     }

     /** {@inheritDoc} */

     public abstract JEuclidElement getBase();

     /** {@inheritDoc} */

     public abstract JEuclidElement getSuperscript();

     /** {@inheritDoc} */

     public abstract JEuclidElement getSubscript();

     /** {@inheritDoc} */

     @Override

     public boolean hasChildPostscripts(final JEuclidElement child,

             final LayoutContext context) {

         return child.isSameNode(this.getBase());

     }

     /** {@inheritDoc} */

     @Override

     protected void layoutStageInvariant(final LayoutView view,

             final LayoutInfo info, final LayoutStage stage,

             final LayoutContext context) {

         ScriptSupport.layout(view, info, stage, this

                 .applyLocalAttributesToContext(context), this, this.getBase(),

                 this.getSubscript(), this.getSuperscript(), this

                         .getSubscriptshift(), this.getSuperscriptshift());

     }

 }