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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2005, 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: * LengthConstraintType.java 29: * ------------------------- 30: * (C) Copyright 2005, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * $Id: LengthConstraintType.java,v 1.2.2.1 2005/10/25 20:39:38 mungady Exp $ 36: * 37: * Changes: 38: * -------- 39: * 08-Feb-2004 : Version 1 (DG); 40: * 41: */ 42: 43: package org.jfree.chart.block; 44: 45: import java.io.ObjectStreamException; 46: import java.io.Serializable; 47: 48: /** 49: * Defines tokens used to indicate a length constraint type. 50: */ 51: public final class LengthConstraintType implements Serializable { 52: 53: /** For serialization. */ 54: private static final long serialVersionUID = -1156658804028142978L; 55: 56: /** NONE. */ 57: public static final LengthConstraintType NONE 58: = new LengthConstraintType("LengthConstraintType.NONE"); 59: 60: /** Range. */ 61: public static final LengthConstraintType RANGE 62: = new LengthConstraintType("RectangleConstraintType.RANGE"); 63: 64: /** FIXED. */ 65: public static final LengthConstraintType FIXED 66: = new LengthConstraintType("LengthConstraintType.FIXED"); 67: 68: /** The name. */ 69: private String name; 70: 71: /** 72: * Private constructor. 73: * 74: * @param name the name. 75: */ 76: private LengthConstraintType(String name) { 77: this.name = name; 78: } 79: 80: /** 81: * Returns a string representing the object. 82: * 83: * @return The string. 84: */ 85: public String toString() { 86: return this.name; 87: } 88: 89: /** 90: * Returns <code>true</code> if this object is equal to the specified 91: * object, and <code>false</code> otherwise. 92: * 93: * @param obj the object (<code>null</code> permitted). 94: * 95: * @return A boolean. 96: */ 97: public boolean equals(Object obj) { 98: if (this == obj) { 99: return true; 100: } 101: if (!(obj instanceof LengthConstraintType)) { 102: return false; 103: } 104: LengthConstraintType that = (LengthConstraintType) obj; 105: if (!this.name.equals(that.toString())) { 106: return false; 107: } 108: return true; 109: } 110: 111: /** 112: * Returns a hash code value for the object. 113: * 114: * @return The hashcode 115: */ 116: public int hashCode() { 117: return this.name.hashCode(); 118: } 119: 120: /** 121: * Ensures that serialization returns the unique instances. 122: * 123: * @return The object. 124: * 125: * @throws ObjectStreamException if there is a problem. 126: */ 127: private Object readResolve() throws ObjectStreamException { 128: if (this.equals(LengthConstraintType.NONE)) { 129: return LengthConstraintType.NONE; 130: } 131: else if (this.equals(LengthConstraintType.RANGE)) { 132: return LengthConstraintType.RANGE; 133: } 134: else if (this.equals(LengthConstraintType.FIXED)) { 135: return LengthConstraintType.FIXED; 136: } 137: return null; 138: } 139: 140: }