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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: * PlotOrientation.java 29: * -------------------- 30: * (C) Copyright 2003-2007, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * Changes: 36: * -------- 37: * 02-May-2003 : Version 1 (DG); 38: * 17-Jul-2003 : Added readResolve() method (DG); 39: * 21-Nov-2007 : Implemented hashCode() (DG); 40: * 41: */ 42: 43: package org.jfree.chart.plot; 44: 45: import java.io.ObjectStreamException; 46: import java.io.Serializable; 47: 48: /** 49: * Used to indicate the orientation (horizontal or vertical) of a 2D plot. 50: */ 51: public final class PlotOrientation implements Serializable { 52: 53: /** For serialization. */ 54: private static final long serialVersionUID = -2508771828190337782L; 55: 56: /** For a plot where the range axis is horizontal. */ 57: public static final PlotOrientation HORIZONTAL 58: = new PlotOrientation("PlotOrientation.HORIZONTAL"); 59: 60: /** For a plot where the range axis is vertical. */ 61: public static final PlotOrientation VERTICAL 62: = new PlotOrientation("PlotOrientation.VERTICAL"); 63: 64: /** The name. */ 65: private String name; 66: 67: /** 68: * Private constructor. 69: * 70: * @param name the name. 71: */ 72: private PlotOrientation(String name) { 73: this.name = name; 74: } 75: 76: /** 77: * Returns a string representing the object. 78: * 79: * @return The string. 80: */ 81: public String toString() { 82: return this.name; 83: } 84: 85: /** 86: * Returns <code>true</code> if this object is equal to the specified 87: * object, and <code>false</code> otherwise. 88: * 89: * @param obj the object (<code>null</code> permitted). 90: * 91: * @return A boolean. 92: */ 93: public boolean equals(Object obj) { 94: if (this == obj) { 95: return true; 96: } 97: if (!(obj instanceof PlotOrientation)) { 98: return false; 99: } 100: PlotOrientation orientation = (PlotOrientation) obj; 101: if (!this.name.equals(orientation.toString())) { 102: return false; 103: } 104: return true; 105: } 106: 107: /** 108: * Returns a hash code for this instance. 109: * 110: * @return A hash code. 111: */ 112: public int hashCode() { 113: return this.name.hashCode(); 114: } 115: 116: /** 117: * Ensures that serialization returns the unique instances. 118: * 119: * @return The object. 120: * 121: * @throws ObjectStreamException if there is a problem. 122: */ 123: private Object readResolve() throws ObjectStreamException { 124: Object result = null; 125: if (this.equals(PlotOrientation.HORIZONTAL)) { 126: result = PlotOrientation.HORIZONTAL; 127: } 128: else if (this.equals(PlotOrientation.VERTICAL)) { 129: result = PlotOrientation.VERTICAL; 130: } 131: return result; 132: } 133: 134: }