001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, 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 2004-2007, 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 /**
062 * The area is truncated at the first or last value.
063 */
064 public static final AreaRendererEndType TRUNCATE = new AreaRendererEndType(
065 "AreaRendererEndType.TRUNCATE"
066 );
067
068 /**
069 * The area is levelled at the first or last value.
070 */
071 public static final AreaRendererEndType LEVEL = new AreaRendererEndType(
072 "AreaRendererEndType.LEVEL"
073 );
074
075 /** The name. */
076 private String name;
077
078 /**
079 * Private constructor.
080 *
081 * @param name the name.
082 */
083 private AreaRendererEndType(String name) {
084 this.name = name;
085 }
086
087 /**
088 * Returns a string representing the object.
089 *
090 * @return The string.
091 */
092 public String toString() {
093 return this.name;
094 }
095
096 /**
097 * Returns <code>true</code> if this object is equal to the specified
098 * object, and <code>false</code> otherwise.
099 *
100 * @param o the other object.
101 *
102 * @return A boolean.
103 */
104 public boolean equals(Object o) {
105
106 if (this == o) {
107 return true;
108 }
109 if (!(o instanceof AreaRendererEndType)) {
110 return false;
111 }
112
113 AreaRendererEndType t = (AreaRendererEndType) o;
114 if (!this.name.equals(t.toString())) {
115 return false;
116 }
117
118 return true;
119
120 }
121
122 /**
123 * Ensures that serialization returns the unique instances.
124 *
125 * @return The object.
126 *
127 * @throws ObjectStreamException if there is a problem.
128 */
129 private Object readResolve() throws ObjectStreamException {
130 Object result = null;
131 if (this.equals(AreaRendererEndType.LEVEL)) {
132 result = AreaRendererEndType.LEVEL;
133 }
134 else if (this.equals(AreaRendererEndType.TAPER)) {
135 result = AreaRendererEndType.TAPER;
136 }
137 else if (this.equals(AreaRendererEndType.TRUNCATE)) {
138 result = AreaRendererEndType.TRUNCATE;
139 }
140 return result;
141 }
142
143 }