001 /* ===========================================================
002 * JFreeChart : a free chart 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/jfreechart/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 * AreaRendererEndType.java
029 * ------------------------
030 * (C) Copyright 2004, 2005, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * $Id: AreaRendererEndType.java,v 1.4.2.1 2005/10/25 20:53:40 mungady Exp $
036 *
037 * Changes:
038 * --------
039 * 29-April-2004 : Version 1 (DG);
040 *
041 */
042
043 package org.jfree.chart.renderer;
044
045 import java.io.ObjectStreamException;
046 import java.io.Serializable;
047
048 /**
049 * An enumeration of the 'end types' for an area renderer.
050 */
051 public final class AreaRendererEndType implements Serializable {
052
053 /** For serialization. */
054 private static final long serialVersionUID = -1774146392916359839L;
055
056 /**
057 * The area tapers from the first or last value down to zero.
058 */
059 public static final AreaRendererEndType TAPER = new AreaRendererEndType(
060 "AreaRendererEndType.TAPER"
061 );
062
063 /**
064 * The area is truncated at the first or last value.
065 */
066 public static final AreaRendererEndType TRUNCATE = new AreaRendererEndType(
067 "AreaRendererEndType.TRUNCATE"
068 );
069
070 /**
071 * The area is levelled at the first or last value.
072 */
073 public static final AreaRendererEndType LEVEL = new AreaRendererEndType(
074 "AreaRendererEndType.LEVEL"
075 );
076
077 /** The name. */
078 private String name;
079
080 /**
081 * Private constructor.
082 *
083 * @param name the name.
084 */
085 private AreaRendererEndType(String name) {
086 this.name = name;
087 }
088
089 /**
090 * Returns a string representing the object.
091 *
092 * @return The string.
093 */
094 public String toString() {
095 return this.name;
096 }
097
098 /**
099 * Returns <code>true</code> if this object is equal to the specified
100 * object, and <code>false</code> otherwise.
101 *
102 * @param o the other object.
103 *
104 * @return A boolean.
105 */
106 public boolean equals(Object o) {
107
108 if (this == o) {
109 return true;
110 }
111 if (!(o instanceof AreaRendererEndType)) {
112 return false;
113 }
114
115 AreaRendererEndType t = (AreaRendererEndType) o;
116 if (!this.name.equals(t.toString())) {
117 return false;
118 }
119
120 return true;
121
122 }
123
124 /**
125 * Ensures that serialization returns the unique instances.
126 *
127 * @return The object.
128 *
129 * @throws ObjectStreamException if there is a problem.
130 */
131 private Object readResolve() throws ObjectStreamException {
132 Object result = null;
133 if (this.equals(AreaRendererEndType.LEVEL)) {
134 result = AreaRendererEndType.LEVEL;
135 }
136 else if (this.equals(AreaRendererEndType.TAPER)) {
137 result = AreaRendererEndType.TAPER;
138 }
139 else if (this.equals(AreaRendererEndType.TRUNCATE)) {
140 result = AreaRendererEndType.TRUNCATE;
141 }
142 return result;
143 }
144
145 }