001 /* ======================================================================== 002 * JCommon : a free general purpose class library for the Java(tm) platform 003 * ======================================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jcommon/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * --------------------------------- 028 * BasicStrokeObjectDescription.java 029 * --------------------------------- 030 * (C)opyright 2003, 2004, by Thomas Morgner and Contributors. 031 * 032 * Original Author: Thomas Morgner; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * $Id: BasicStrokeObjectDescription.java,v 1.3 2005/11/14 10:59:02 mungady Exp $ 036 * 037 * Changes (from 19-Feb-2003) 038 * ------------------------- 039 * 19-Feb-2003 : Added standard header and Javadocs (DG); 040 * 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon 041 * 042 */ 043 044 package org.jfree.xml.factory.objects; 045 046 import java.awt.BasicStroke; 047 048 /** 049 * An object-description for a <code>BasicStroke</code> object. 050 * 051 * @author Thomas Morgner 052 */ 053 public class BasicStrokeObjectDescription extends AbstractObjectDescription { 054 055 /** 056 * Creates a new object description. 057 */ 058 public BasicStrokeObjectDescription() { 059 super(BasicStroke.class); 060 setParameterDefinition("value", String.class); 061 } 062 063 /** 064 * Returns a parameter as a float. 065 * 066 * @param param the parameter name. 067 * 068 * @return The float value. 069 */ 070 private float getFloatParameter(final String param) { 071 final String p = (String) getParameter(param); 072 if (p == null) { 073 return 0; 074 } 075 try { 076 return Float.parseFloat(p); 077 } 078 catch (Exception e) { 079 return 0; 080 } 081 } 082 083 /** 084 * Creates a new <code>BasicStroke</code> object based on this description. 085 * 086 * @return The <code>BasicStroke</code> object. 087 */ 088 public Object createObject() { 089 final float width = getFloatParameter("value"); 090 return new BasicStroke(width); 091 } 092 093 /** 094 * Sets the parameters for this description to match the supplied object. 095 * 096 * @param o the object (instance of <code>BasicStroke</code> required). 097 * 098 * @throws ObjectFactoryException if the supplied object is not an instance of 099 * <code>BasicStroke</code>. 100 */ 101 public void setParameterFromObject(final Object o) throws ObjectFactoryException { 102 if (!(o instanceof BasicStroke)) { 103 throw new ObjectFactoryException("Expected object of type BasicStroke"); 104 } 105 final BasicStroke bs = (BasicStroke) o; 106 setParameter("value", String.valueOf(bs.getLineWidth())); 107 } 108 }