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.]
   * 
   * ----------------------------
   * BasicStrokeWriteHandler.java
   * ----------------------------
   * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
   *
   * Original Author:  Thomas Morgner;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * $Id: BasicStrokeWriteHandler.java,v 1.3 2005/10/18 13:35:21 mungady Exp $
   *
   * Changes
   * -------
   * 12-Nov-2003 : Initial version (TM);
   * 25-Nov-2003 : Updated header (DG);
   * 
   */
  
  package org.jfree.xml.writer.coretypes;
  
  import java.awt.BasicStroke;
  import java.io.IOException;
  
  import org.jfree.xml.writer.AbstractXmlWriteHandler;
  import org.jfree.xml.writer.AttributeList;
  import org.jfree.xml.writer.XMLWriter;
  import org.jfree.xml.writer.XMLWriterException;
  
  /**
   * A handler that can write the XML description for a {@link BasicStroke} object.
   */
  public class BasicStrokeWriteHandler extends AbstractXmlWriteHandler  {
  
      /**
       * Creates a new handler.
       */
      public BasicStrokeWriteHandler() {
          super();
      }
  
      /**
       * Performs the writing of a single object.
       *
       * @param tagName  the tag name.
       * @param object  the object ({@link BasicStroke} expected).
       * @param writer  the writer.
       * @param mPlexAttribute  ??
       * @param mPlexValue  ??
       * 
       * @throws IOException if there is an I/O problem.
       * @throws XMLWriterException if there is a problem with the writer.
       */
      public void write(final String tagName, final Object object, final XMLWriter writer,
                        final String mPlexAttribute, final String mPlexValue)
          throws IOException, XMLWriterException {
          final BasicStroke stroke = (BasicStroke) object;
          final float[] dashArray = stroke.getDashArray();
          final float dashPhase = stroke.getDashPhase();
          final int endCap = stroke.getEndCap();
          final int lineJoin = stroke.getLineJoin();
          final float lineWidth = stroke.getLineWidth();
          final float miterLimit = stroke.getMiterLimit();
          final AttributeList attribs = new AttributeList();
          if (mPlexAttribute != null) {
              attribs.setAttribute(mPlexAttribute, mPlexValue);
          }
          attribs.setAttribute("type", "basic");
          attribs.setAttribute("endCap", String.valueOf(endCap));
          attribs.setAttribute("lineJoin", String.valueOf(lineJoin));
          attribs.setAttribute("lineWidth", String.valueOf(lineWidth));
          attribs.setAttribute("miterLimit", String.valueOf(miterLimit));
          if (dashArray != null) {
              attribs.setAttribute("dashArray", toString(dashArray));
              attribs.setAttribute("dashPhase", String.valueOf(dashPhase));
          }
          writer.writeTag(tagName, attribs, true);
      }
  
      /**
       * A utility method that converts a dash array (from a {@link BasicStroke} object) to 
       * a {@link String}.
       * 
       * @param dashArray  the dash array.
       * 
       * @return a {@link String} representing the dash array.
       */
      private String toString(final float[] dashArray) {
          final StringBuffer buffer = new StringBuffer();
          for (int i = 0; i < dashArray.length; i++) {
              final float f = dashArray[i];
              if (i != 0) {
                  buffer.append(',');
              }
              buffer.append(f);
          }
          return buffer.toString();
      }
      
  }
  