001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, 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 2004-2008, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * Changes:
036 * --------
037 * 29-April-2004 : Version 1 (DG);
038 *
039 */
040
041 package org.jfree.chart.renderer;
042
043 import java.io.ObjectStreamException;
044 import java.io.Serializable;
045
046 /**
047 * An enumeration of the 'end types' for an area renderer.
048 */
049 public final class AreaRendererEndType implements Serializable {
050
051 /** For serialization. */
052 private static final long serialVersionUID = -1774146392916359839L;
053
054 /**
055 * The area tapers from the first or last value down to zero.
056 */
057 public static final AreaRendererEndType TAPER = new AreaRendererEndType(
058 "AreaRendererEndType.TAPER");
059
060 /**
061 * The area is truncated at the first or last value.
062 */
063 public static final AreaRendererEndType TRUNCATE = new AreaRendererEndType(
064 "AreaRendererEndType.TRUNCATE");
065
066 /**
067 * The area is levelled at the first or last value.
068 */
069 public static final AreaRendererEndType LEVEL = new AreaRendererEndType(
070 "AreaRendererEndType.LEVEL");
071
072 /** The name. */
073 private String name;
074
075 /**
076 * Private constructor.
077 *
078 * @param name the name.
079 */
080 private AreaRendererEndType(String name) {
081 this.name = name;
082 }
083
084 /**
085 * Returns a string representing the object.
086 *
087 * @return The string.
088 */
089 public String toString() {
090 return this.name;
091 }
092
093 /**
094 * Returns <code>true</code> if this object is equal to the specified
095 * object, and <code>false</code> otherwise.
096 *
097 * @param obj the object (<code>null</code> permitted).
098 *
099 * @return A boolean.
100 */
101 public boolean equals(Object obj) {
102
103 if (this == obj) {
104 return true;
105 }
106 if (!(obj instanceof AreaRendererEndType)) {
107 return false;
108 }
109
110 AreaRendererEndType t = (AreaRendererEndType) obj;
111 if (!this.name.equals(t.toString())) {
112 return false;
113 }
114
115 return true;
116
117 }
118
119 /**
120 * Ensures that serialization returns the unique instances.
121 *
122 * @return The object.
123 *
124 * @throws ObjectStreamException if there is a problem.
125 */
126 private Object readResolve() throws ObjectStreamException {
127 Object result = null;
128 if (this.equals(AreaRendererEndType.LEVEL)) {
129 result = AreaRendererEndType.LEVEL;
130 }
131 else if (this.equals(AreaRendererEndType.TAPER)) {
132 result = AreaRendererEndType.TAPER;
133 }
134 else if (this.equals(AreaRendererEndType.TRUNCATE)) {
135 result = AreaRendererEndType.TRUNCATE;
136 }
137 return result;
138 }
139
140 }