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.]
   * 
   * ---------------------------------
   * BasicStrokeObjectDescription.java
   * ---------------------------------
   * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
   *
   * Original Author:  Thomas Morgner;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * $Id: BasicStrokeObjectDescription.java,v 1.4 2006/01/27 18:53:15 taqua Exp $
   *
   * Changes (from 19-Feb-2003)
   * -------------------------
   * 19-Feb-2003 : Added standard header and Javadocs (DG);
   * 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon
   *
   */
  
  package org.jfree.xml.factory.objects;
  
  import java.awt.BasicStroke;
  
  /**
   * An object-description for a <code>BasicStroke</code> object.
   *
   * @author Thomas Morgner
   */
  public class BasicStrokeObjectDescription extends AbstractObjectDescription {
  
      /**
       * Creates a new object description.
       */
      public BasicStrokeObjectDescription() {
          super(BasicStroke.class);
          setParameterDefinition("value", String.class);
          setParameterDefinition("width", Float.class);
          setParameterDefinition("dashes", Float[].class);
      }
  
      /**
       * Returns a parameter as a float.
       *
       * @param param  the parameter name.
       *
       * @return The float value.
       */
      private float getFloatParameter(final String param) {
          final String p = (String) getParameter(param);
          if (p == null) {
              return 0;
          }
          try {
              return Float.parseFloat(p);
          }
          catch (Exception e) {
              return 0;
          }
      }
  
      /**
       * Creates a new <code>BasicStroke</code> object based on this description.
       *
       * @return The <code>BasicStroke</code> object.
       */
      public Object createObject() {
  
          final float width = getFloatParameter("value");
          if (width > 0) {
            return new BasicStroke(width);
          }
  
          Float realWidth = (Float) getParameter("width");
          Float[] dashes = (Float[]) getParameter("dashes");
          if (realWidth == null || dashes == null) {
              return null;
          }
          float[] dashesPrimitive = new float[dashes.length];
          for (int i = 0; i < dashes.length; i++) {
            Float dash = dashes[i];
            dashesPrimitive[i] = dash.floatValue();
          }
          return new BasicStroke(realWidth.floatValue(),
                  BasicStroke.CAP_SQUARE, BasicStroke.JOIN_MITER,
                  10.0f, dashesPrimitive, 0.0f);
      }
  
      /**
       * Sets the parameters for this description to match the supplied object.
       *
       * @param o  the object (instance of <code>BasicStroke</code> required).
       *
       * @throws ObjectFactoryException if the supplied object is not an instance of
       *         <code>BasicStroke</code>.
       */
      public void setParameterFromObject(final Object o) throws ObjectFactoryException {
          if (!(o instanceof BasicStroke)) {
              throw new ObjectFactoryException("Expected object of type BasicStroke");
          }
          final BasicStroke bs = (BasicStroke) o;
          setParameter("value", String.valueOf(bs.getLineWidth()));
      }
  }
  