/*

  * 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: StyleAttributeLayoutContext.java,v 8afef6dd0d58 2007/09/14 08:29:58 maxberger $ */

 package net.sourceforge.jeuclid.context;

 import java.awt.Color;

 import net.sourceforge.jeuclid.LayoutContext;

 import net.sourceforge.jeuclid.elements.support.attributes.AttributesHelper;

 /**

  * @version $Revision: 8afef6dd0d58 $

  */

 public class StyleAttributeLayoutContext implements LayoutContext {

     private final LayoutContext parentLayoutContext;

     private final String sizeString;

     private final Color foregroundColor;

     /**

      * Default Constructor.

      * 

      * @param parent

      *            LayoutContext of parent.

      * @param msize

      *            msize String to apply to parent context.

      * @param foreground

      *            Foreground color for new context.

      */

     public StyleAttributeLayoutContext(final LayoutContext parent,

             final String msize, final Color foreground) {

         this.parentLayoutContext = parent;

         this.sizeString = msize;

         this.foregroundColor = foreground;

     }

     /** {@inheritDoc} */

     public Object getParameter(final Parameter which) {

         final Object retVal;

         if (Parameter.MATHSIZE.equals(which) && (this.sizeString != null)) {

             retVal = AttributesHelper.convertSizeToPt(this.sizeString,

                     this.parentLayoutContext, AttributesHelper.PT);

         } else if (Parameter.MATHCOLOR.equals(which)

                 && this.foregroundColor != null) {

             retVal = this.foregroundColor;

         } else {

             retVal = this.parentLayoutContext.getParameter(which);

         }

         return retVal;

     }

 }