/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/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.]
*
* --------------
* DialShape.java
* --------------
* (C) Copyright 2003-2007, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 20-Aug-2003 : Version 1 (DG);
* 12-Nov-2007 : Implemented hashCode() (DG);
*
*/
package org.jfree.chart.plot;
import java.io.ObjectStreamException;
import java.io.Serializable;
/**
* Used to indicate the background shape for a
* {@link org.jfree.chart.plot.MeterPlot}.
*/
public final class DialShape implements Serializable {
/** For serialization. */
private static final long serialVersionUID = -3471933055190251131L;
/** Circle. */
public static final DialShape CIRCLE = new DialShape("DialShape.CIRCLE");
/** Chord. */
public static final DialShape CHORD = new DialShape("DialShape.CHORD");
/** Pie. */
public static final DialShape PIE = new DialShape("DialShape.PIE");
/** The name. */
private String name;
/**
* Private constructor.
*
* @param name the name.
*/
private DialShape(String name) {
this.name = name;
}
/**
* Returns a string representing the object.
*
* @return The string.
*/
public String toString() {
return this.name;
}
/**
* Returns <code>true</code> if this object is equal to the specified
* object, and <code>false</code> otherwise.
*
* @param obj the other object.
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof DialShape)) {
return false;
}
DialShape shape = (DialShape) obj;
if (!this.name.equals(shape.toString())) {
return false;
}
return true;
}
/**
* Returns a hash code for this instance.
*
* @return A hash code.
*/
public int hashCode() {
return this.name.hashCode();
}
/**
* Ensures that serialization returns the unique instances.
*
* @return The object.
*
* @throws ObjectStreamException if there is a problem.
*/
private Object readResolve() throws ObjectStreamException {
if (this.equals(DialShape.CIRCLE)) {
return DialShape.CIRCLE;
}
else if (this.equals(DialShape.CHORD)) {
return DialShape.CHORD;
}
else if (this.equals(DialShape.PIE)) {
return DialShape.PIE;
}
return null;
}
}
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