content: /* ========================================================================
   * JCommon : a free general purpose class library for the Java(tm) platform
   * ========================================================================
   *
   * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   * 
   * Project Info:  http://www.jfree.org/jcommon/index.html
   *
   * This library is free software; you can redistribute it and/or modify it 
   * under the terms of the GNU Lesser General Public License as published by 
   * the Free Software Foundation; either version 2.1 of the License, or 
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but 
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
   * USA.  
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
   * in the United States and other countries.]
   * 
   * ---------------------------------
   * Dimension2DObjectDescription.java
   * ---------------------------------
   * (C)opyright 2003, by Thomas Morgner and Contributors.
   *
   * Original Author:  Thomas Morgner;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * $Id: Dimension2DObjectDescription.java,v 1.2 2005/10/18 13:31:58 mungady Exp $
   *
   * Changes 
   * -------
   * 13-Jan-2004 : Initial version
   *  
   */
  
  package org.jfree.xml.factory.objects;
  
  import java.awt.geom.Dimension2D;
  
  import org.jfree.ui.FloatDimension;
  
  /**
   * An object-description for a <code>Dimension2D</code> object.
   *
   * @author Thomas Morgner
   */
  public class Dimension2DObjectDescription extends AbstractObjectDescription {
  
      /**
       * Creates a new object description.
       */
      public Dimension2DObjectDescription() {
          super(Dimension2D.class);
          setParameterDefinition("width", Float.class);
          setParameterDefinition("height", Float.class);
      }
  
      /**
       * Creates an object based on the description.
       *
       * @return The object.
       */
      public Object createObject() {
          final Dimension2D dim = new FloatDimension();
  
          final float width = getFloatParameter("width");
          final float height = getFloatParameter("height");
          dim.setSize(width, height);
          return dim;
      }
  
      /**
       * Returns a parameter value as a float.
       *
       * @param param  the parameter name.
       *
       * @return The float value.
       */
      private float getFloatParameter(final String param) {
          final Float p = (Float) getParameter(param);
          if (p == null) {
              return 0;
          }
          return p.floatValue();
      }
  
  
      /**
       * Sets the parameters of this description object to match the supplied object.
       *
       * @param o  the object (should be an instance of <code>Dimension2D</code>).
       *
       * @throws ObjectFactoryException if the object is not an instance of <code>Point2D</code>.
       */
      public void setParameterFromObject(final Object o) throws ObjectFactoryException {
          if (!(o instanceof Dimension2D)) {
              throw new ObjectFactoryException("The given object is no java.awt.geom.Dimension2D.");
          }
  
          final Dimension2D dim = (Dimension2D) o;
          final float width = (float) dim.getWidth();
          final float height = (float) dim.getHeight();
  
          setParameter("width", new Float(width));
          setParameter("height", new Float(height));
      }
  }
  