Source for org.jfree.xml.parser.coretypes.RenderingHintsReadHandler

   1: /* ========================================================================
   2:  * JCommon : a free general purpose class library for the Java(tm) platform
   3:  * ========================================================================
   4:  *
   5:  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   6:  * 
   7:  * Project Info:  http://www.jfree.org/jcommon/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  * 
  27:  * ------------------------------
  28:  * RenderingHintsReadHandler.java
  29:  * ------------------------------
  30:  * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
  31:  *
  32:  * Original Author:  Thomas Morgner;
  33:  * Contributor(s):   David Gilbert (for Object Refinery Limited);
  34:  *
  35:  * $Id: RenderingHintsReadHandler.java,v 1.3 2005/10/18 13:33:32 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 03-Dec-2003 : Initial version
  40:  * 11-Feb-2004 : Added missing Javadocs (DG);
  41:  * 
  42:  */
  43: 
  44: package org.jfree.xml.parser.coretypes;
  45: 
  46: import java.awt.RenderingHints;
  47: import java.util.ArrayList;
  48: 
  49: import org.jfree.xml.parser.AbstractXmlReadHandler;
  50: import org.jfree.xml.parser.XmlReadHandler;
  51: import org.jfree.xml.parser.XmlReaderException;
  52: import org.xml.sax.Attributes;
  53: import org.xml.sax.SAXException;
  54: 
  55: /**
  56:  * A read handler that can parse the XML element for a {@link RenderingHints} collection.
  57:  */
  58: public class RenderingHintsReadHandler extends AbstractXmlReadHandler {
  59: 
  60:     /** The subhandlers. */
  61:     private ArrayList handlers;
  62:     
  63:     /** The rendering hints under construction. */
  64:     private RenderingHints renderingHints;
  65: 
  66:     /**
  67:      * Creates a new read handler.
  68:      */
  69:     public RenderingHintsReadHandler() {
  70:         super();
  71:     }
  72: 
  73:     /**
  74:      * Starts parsing.
  75:      *
  76:      * @param attrs  the attributes.
  77:      *
  78:      * @throws SAXException never.
  79:      */
  80:     protected void startParsing(final Attributes attrs) throws SAXException {
  81:         this.handlers = new ArrayList();
  82:     }
  83: 
  84:     /**
  85:      * Returns the handler for a child element.
  86:      *
  87:      * @param tagName  the tag name.
  88:      * @param atts  the attributes.
  89:      *
  90:      * @return the handler.
  91:      *
  92:      * @throws SAXException  if there is a parsing error.
  93:      * @throws XmlReaderException if there is a reader error.
  94:      */
  95:     protected XmlReadHandler getHandlerForChild(final String tagName, final Attributes atts)
  96:         throws XmlReaderException, SAXException {
  97: 
  98:         if (!tagName.equals("entry")) {
  99:             throw new SAXException("Expected 'entry' tag.");
 100:         }
 101: 
 102:         final XmlReadHandler handler = new RenderingHintValueReadHandler();
 103:         this.handlers.add(handler);
 104:         return handler;
 105:     }
 106: 
 107:     /**
 108:      * Done parsing.
 109:      *
 110:      * @throws SAXException if there is a parsing error.
 111:      * @throws XmlReaderException if there is a reader error.
 112:      */
 113:     protected void doneParsing() throws SAXException, XmlReaderException {
 114:         this.renderingHints = new RenderingHints(null);
 115: 
 116:         for (int i = 0; i < this.handlers.size(); i++) {
 117:             final RenderingHintValueReadHandler rh =
 118:                 (RenderingHintValueReadHandler) this.handlers.get(i);
 119:             this.renderingHints.put(rh.getKey(), rh.getValue());
 120:         }
 121:     }
 122: 
 123:     /**
 124:      * Returns the object for this element.
 125:      *
 126:      * @return the object.
 127:      *
 128:      * @throws XmlReaderException if there is a parsing error.
 129:      */
 130:     public Object getObject() throws XmlReaderException {
 131:         return this.renderingHints;
 132:     }
 133: }