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: * Dimension2DObjectDescription.java
029: * ---------------------------------
030: * (C)opyright 2003, by Thomas Morgner and Contributors.
031: *
032: * Original Author: Thomas Morgner;
033: * Contributor(s): David Gilbert (for Object Refinery Limited);
034: *
035: * $Id: Dimension2DObjectDescription.java,v 1.2 2005/10/18 13:31:58 mungady Exp $
036: *
037: * Changes
038: * -------
039: * 13-Jan-2004 : Initial version
040: *
041: */
042:
043: package org.jfree.xml.factory.objects;
044:
045: import java.awt.geom.Dimension2D;
046:
047: import org.jfree.ui.FloatDimension;
048:
049: /**
050: * An object-description for a <code>Dimension2D</code> object.
051: *
052: * @author Thomas Morgner
053: */
054: public class Dimension2DObjectDescription extends
055: AbstractObjectDescription {
056:
057: /**
058: * Creates a new object description.
059: */
060: public Dimension2DObjectDescription() {
061: super (Dimension2D.class);
062: setParameterDefinition("width", Float.class);
063: setParameterDefinition("height", Float.class);
064: }
065:
066: /**
067: * Creates an object based on the description.
068: *
069: * @return The object.
070: */
071: public Object createObject() {
072: final Dimension2D dim = new FloatDimension();
073:
074: final float width = getFloatParameter("width");
075: final float height = getFloatParameter("height");
076: dim.setSize(width, height);
077: return dim;
078: }
079:
080: /**
081: * Returns a parameter value as a float.
082: *
083: * @param param the parameter name.
084: *
085: * @return The float value.
086: */
087: private float getFloatParameter(final String param) {
088: final Float p = (Float) getParameter(param);
089: if (p == null) {
090: return 0;
091: }
092: return p.floatValue();
093: }
094:
095: /**
096: * Sets the parameters of this description object to match the supplied object.
097: *
098: * @param o the object (should be an instance of <code>Dimension2D</code>).
099: *
100: * @throws ObjectFactoryException if the object is not an instance of <code>Point2D</code>.
101: */
102: public void setParameterFromObject(final Object o)
103: throws ObjectFactoryException {
104: if (!(o instanceof Dimension2D)) {
105: throw new ObjectFactoryException(
106: "The given object is no java.awt.geom.Dimension2D.");
107: }
108:
109: final Dimension2D dim = (Dimension2D) o;
110: final float width = (float) dim.getWidth();
111: final float height = (float) dim.getHeight();
112:
113: setParameter("width", new Float(width));
114: setParameter("height", new Float(height));
115: }
116: }
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