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.]
   * 
   * ----------------------
   * BasicStrokeReadHandler
   * ----------------------
   * (C) Copyright 2003, by Thomas Morgner and Contributors.
   *
   * Original Author:  Thomas Morgner;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * $Id: BasicStrokeReadHandler.java,v 1.2 2005/10/18 13:33:32 mungady Exp $
   *
   * Changes (from 25-Nov-2003)
   * --------------------------
   * 25-Nov-2003 : Added standard header and Javadocs (DG);
   *
   */
  
  package org.jfree.xml.parser.coretypes;
  
  import java.awt.BasicStroke;
  import java.util.StringTokenizer;
  
  import org.jfree.xml.parser.AbstractXmlReadHandler;
  import org.xml.sax.Attributes;
  import org.xml.sax.SAXException;
  
  /**
   * A SAX handler for reading a {@link BasicStroke} object from XML.
   * <p>
   * To do: this should have a multiplexer in front like the PaintReadHandler
   */
  public class BasicStrokeReadHandler extends AbstractXmlReadHandler  {
      
      /** The stroke under construction. */
      private BasicStroke stroke;
  
      /**
       * Creates a new handler.
       */
      public BasicStrokeReadHandler() {
          super();
      }
  
      /**
       * Called at the start of parsing a {@link BasicStroke} element, this method reads the 
       * attributes and constructs the stroke. 
       * 
       * @param attrs  the attributes.
       * 
       * @throws SAXException to indicate a parsing error.
       */
      protected void startParsing(final Attributes attrs) throws SAXException {
          final int endCap = Integer.parseInt(attrs.getValue("endCap"));
          final int lineJoin = Integer.parseInt(attrs.getValue("lineJoin"));
          final float lineWidth = Float.parseFloat(attrs.getValue("lineWidth"));
          final float miterLimit = Float.parseFloat(attrs.getValue("miterLimit"));
          final String dashArrayAttrib = attrs.getValue("dashArray");
          if (dashArrayAttrib != null) {
              final float[] dashArray = parseDashArray(dashArrayAttrib);
              final float dashPhase = Float.parseFloat(attrs.getValue("dashPhase"));
              this.stroke = new BasicStroke(
                  lineWidth, endCap, lineJoin, miterLimit, dashArray, dashPhase
              );
          } 
          else {
              this.stroke = new BasicStroke(lineWidth, endCap, lineJoin, miterLimit);
          }
      }
      
      /**
       * Parses the dash array.
       * 
       * @param string  the dash array string representation.
       * 
       * @return a dash array.
       */
      private float[] parseDashArray(final String string) {
          final StringTokenizer tokenizer = new StringTokenizer(string, ",");
          final float[] retVal = new float[tokenizer.countTokens()];
          for (int i = 0; i < retVal.length; i++) {
              retVal[i] = Float.parseFloat(tokenizer.nextToken());
          }
          return retVal;
      }
  
      /**
       * Returns the stroke under construction.
       * 
       * @return the stroke.
       */
      public Object getObject() {
          return this.stroke;
      }
      
  }
  