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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jfreechart/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * ------------------------- 28: * LegendRenderingOrder.java 29: * ------------------------- 30: * (C) Copyright 2004-2007, by Object Refinery Limited and Contributors. 31: * 32: * Original Author: Angel; 33: * Contributor(s): -; 34: * 35: * Changes 36: * ------- 37: * 26-Mar-2004 : Version 1 (DG); 38: * 39: */ 40: 41: package org.jfree.chart; 42: 43: import java.io.ObjectStreamException; 44: import java.io.Serializable; 45: 46: /** 47: * Represents the order for rendering legend items. 48: */ 49: public final class LegendRenderingOrder implements Serializable { 50: 51: /** For serialization. */ 52: private static final long serialVersionUID = -3832486612685808616L; 53: 54: /** In order. */ 55: public static final LegendRenderingOrder STANDARD 56: = new LegendRenderingOrder("LegendRenderingOrder.STANDARD"); 57: 58: /** In reverse order. */ 59: public static final LegendRenderingOrder REVERSE 60: = new LegendRenderingOrder("LegendRenderingOrder.REVERSE"); 61: 62: /** The name. */ 63: private String name; 64: 65: /** 66: * Private constructor. 67: * 68: * @param name the name. 69: */ 70: private LegendRenderingOrder(String name) { 71: this.name = name; 72: } 73: 74: /** 75: * Returns a string representing the object. 76: * 77: * @return The string. 78: */ 79: public String toString() { 80: return this.name; 81: } 82: 83: /** 84: * Returns <code>true</code> if this object is equal to the specified 85: * object, and <code>false</code> otherwise. 86: * 87: * @param obj the other object. 88: * 89: * @return A boolean. 90: */ 91: public boolean equals(Object obj) { 92: if (this == obj) { 93: return true; 94: } 95: if (!(obj instanceof LegendRenderingOrder)) { 96: return false; 97: } 98: LegendRenderingOrder order = (LegendRenderingOrder) obj; 99: if (!this.name.equals(order.toString())) { 100: return false; 101: } 102: return true; 103: } 104: 105: /** 106: * Ensures that serialization returns the unique instances. 107: * 108: * @return The object. 109: * 110: * @throws ObjectStreamException if there is a problem. 111: */ 112: private Object readResolve() throws ObjectStreamException { 113: if (this.equals(LegendRenderingOrder.STANDARD)) { 114: return LegendRenderingOrder.STANDARD; 115: } 116: else if (this.equals(LegendRenderingOrder.REVERSE)) { 117: return LegendRenderingOrder.REVERSE; 118: } 119: return null; 120: } 121: 122: }