    001/* ===========================================================
    002 * JFreeChart : a free chart library for the Java(tm) platform
    003 * ===========================================================
    004 *
    005 * (C) Copyright 2000-2011, 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 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    025 * Other names may be trademarks of their respective owners.]
    026 *
    027 * ---------------------------
    028 * CategoryLabelWidthType.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 * 24-Mar-2004 : Version 1 (DG);
    038 *
    039 */
    040
    041package org.jfree.chart.axis;
    042
    043import java.io.ObjectStreamException;
    044import java.io.Serializable;
    045
    046/**
    047 * Represents the width types for a category label.
    048 */
    049public final class CategoryLabelWidthType implements Serializable {
    050
    051    /** For serialization. */
    052    private static final long serialVersionUID = -6976024792582949656L;
    053
    054    /** Percentage of category. */
    055    public static final CategoryLabelWidthType
    056        CATEGORY = new CategoryLabelWidthType(
    057            "CategoryLabelWidthType.CATEGORY"
    058        );
    059
    060    /** Percentage of range. */
    061    public static final CategoryLabelWidthType
    062        RANGE = new CategoryLabelWidthType("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        }
    123        else if (this.equals(CategoryLabelWidthType.RANGE)) {
    124            return CategoryLabelWidthType.RANGE;
    125        }
    126        return null;
    127    }
    128
    129}