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 * PlotOrientation.java 029 * -------------------- 030 * (C) Copyright 2003-2005, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * $Id: PlotOrientation.java,v 1.4.2.1 2005/10/25 20:52:08 mungady Exp $ 036 * 037 * Changes: 038 * -------- 039 * 02-May-2003 : Version 1 (DG); 040 * 17-Jul-2003 : Added readResolve() method (DG); 041 * 042 */ 043 044 package org.jfree.chart.plot; 045 046 import java.io.ObjectStreamException; 047 import java.io.Serializable; 048 049 /** 050 * Used to indicate the orientation (horizontal or vertical) of a 2D plot. 051 */ 052 public final class PlotOrientation implements Serializable { 053 054 /** For serialization. */ 055 private static final long serialVersionUID = -2508771828190337782L; 056 057 /** For a plot where the range axis is horizontal. */ 058 public static final PlotOrientation HORIZONTAL 059 = new PlotOrientation("PlotOrientation.HORIZONTAL"); 060 061 /** For a plot where the range axis is vertical. */ 062 public static final PlotOrientation VERTICAL 063 = new PlotOrientation("PlotOrientation.VERTICAL"); 064 065 /** The name. */ 066 private String name; 067 068 /** 069 * Private constructor. 070 * 071 * @param name the name. 072 */ 073 private PlotOrientation(String name) { 074 this.name = name; 075 } 076 077 /** 078 * Returns a string representing the object. 079 * 080 * @return The string. 081 */ 082 public String toString() { 083 return this.name; 084 } 085 086 /** 087 * Returns <code>true</code> if this object is equal to the specified 088 * object, and <code>false</code> otherwise. 089 * 090 * @param o the other object. 091 * 092 * @return A boolean. 093 */ 094 public boolean equals(Object o) { 095 096 if (this == o) { 097 return true; 098 } 099 if (!(o instanceof PlotOrientation)) { 100 return false; 101 } 102 103 PlotOrientation orientation = (PlotOrientation) o; 104 if (!this.name.equals(orientation.toString())) { 105 return false; 106 } 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 Object result = null; 121 if (this.equals(PlotOrientation.HORIZONTAL)) { 122 result = PlotOrientation.HORIZONTAL; 123 } 124 else if (this.equals(PlotOrientation.VERTICAL)) { 125 result = PlotOrientation.VERTICAL; 126 } 127 return result; 128 } 129 130 }