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 * CategoryLabelWidthType.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: CategoryLabelWidthType.java,v 1.4.2.1 2005/10/25 20:37:34 mungady Exp $
036 *
037 * Changes:
038 * --------
039 * 24-Mar-2004 : Version 1 (DG);
040 *
041 */
042
043 package org.jfree.chart.axis;
044
045 import java.io.ObjectStreamException;
046 import java.io.Serializable;
047
048 /**
049 * Represents the width types for a category label.
050 */
051 public final class CategoryLabelWidthType implements Serializable {
052
053 /** For serialization. */
054 private static final long serialVersionUID = -6976024792582949656L;
055
056 /** Percentage of category. */
057 public static final CategoryLabelWidthType
058 CATEGORY = new CategoryLabelWidthType(
059 "CategoryLabelWidthType.CATEGORY"
060 );
061
062 /** Percentage of range. */
063 public static final CategoryLabelWidthType
064 RANGE = new CategoryLabelWidthType("CategoryLabelWidthType.RANGE");
065
066 /** The name. */
067 private String name;
068
069 /**
070 * Private constructor.
071 *
072 * @param name the name (<code>null</code> not permitted).
073 */
074 private CategoryLabelWidthType(String name) {
075 if (name == null) {
076 throw new IllegalArgumentException("Null 'name' argument.");
077 }
078 this.name = name;
079 }
080
081 /**
082 * Returns a string representing the object.
083 *
084 * @return The string (never </code>null</code>).
085 */
086 public String toString() {
087 return this.name;
088 }
089
090 /**
091 * Returns <code>true</code> if this object is equal to the specified
092 * object, and <code>false</code> otherwise.
093 *
094 * @param obj the other object.
095 *
096 * @return A boolean.
097 */
098 public boolean equals(Object obj) {
099
100 if (this == obj) {
101 return true;
102 }
103 if (!(obj instanceof CategoryLabelWidthType)) {
104 return false;
105 }
106 CategoryLabelWidthType t = (CategoryLabelWidthType) obj;
107 if (!this.name.equals(t.toString())) {
108 return false;
109 }
110 return true;
111
112 }
113
114 /**
115 * Ensures that serialization returns the unique instances.
116 *
117 * @return The object.
118 *
119 * @throws ObjectStreamException if there is a problem.
120 */
121 private Object readResolve() throws ObjectStreamException {
122 if (this.equals(CategoryLabelWidthType.CATEGORY)) {
123 return CategoryLabelWidthType.CATEGORY;
124 }
125 else if (this.equals(CategoryLabelWidthType.RANGE)) {
126 return CategoryLabelWidthType.RANGE;
127 }
128 return null;
129 }
130
131 }