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 CATEGORY = new CategoryLabelWidthType(
058: "CategoryLabelWidthType.CATEGORY");
059:
060: /** Percentage of range. */
061: public static final CategoryLabelWidthType RANGE = new CategoryLabelWidthType(
062: "CategoryLabelWidthType.RANGE");
063:
064: /** The name. */
065: private String name;
066:
067: /**
068: * Private constructor.
069: *
070: * @param name the name (<code>null</code> not permitted).
071: */
072: private CategoryLabelWidthType(String name) {
073: if (name == null) {
074: throw new IllegalArgumentException("Null 'name' argument.");
075: }
076: this .name = name;
077: }
078:
079: /**
080: * Returns a string representing the object.
081: *
082: * @return The string (never </code>null</code>).
083: */
084: public String toString() {
085: return this .name;
086: }
087:
088: /**
089: * Returns <code>true</code> if this object is equal to the specified
090: * object, and <code>false</code> otherwise.
091: *
092: * @param obj the other object.
093: *
094: * @return A boolean.
095: */
096: public boolean equals(Object obj) {
097:
098: if (this == obj) {
099: return true;
100: }
101: if (!(obj instanceof CategoryLabelWidthType)) {
102: return false;
103: }
104: CategoryLabelWidthType t = (CategoryLabelWidthType) obj;
105: if (!this .name.equals(t.toString())) {
106: return false;
107: }
108: return true;
109:
110: }
111:
112: /**
113: * Ensures that serialization returns the unique instances.
114: *
115: * @return The object.
116: *
117: * @throws ObjectStreamException if there is a problem.
118: */
119: private Object readResolve() throws ObjectStreamException {
120: if (this.equals(CategoryLabelWidthType.CATEGORY)) {
121: return CategoryLabelWidthType.CATEGORY;
122: } else if (this.equals(CategoryLabelWidthType.RANGE)) {
123: return CategoryLabelWidthType.RANGE;
124: }
125: return null;
126: }
127:
128: }
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