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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2008, 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: * PieLabelLinkStyle.java 29: * ---------------------- 30: * (C) Copyright 2008, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * Changes: 36: * -------- 37: * 31-Mar-2008 : Version 1 (DG); 38: * 39: */ 40: 41: package org.jfree.chart.plot; 42: 43: import java.io.ObjectStreamException; 44: import java.io.Serializable; 45: 46: /** 47: * Used to indicate the style for the lines linking pie sections to their 48: * corresponding labels. 49: * 50: * @since 1.0.10 51: */ 52: public final class PieLabelLinkStyle implements Serializable { 53: 54: /** STANDARD. */ 55: public static final PieLabelLinkStyle STANDARD 56: = new PieLabelLinkStyle("PieLabelLinkStyle.STANDARD"); 57: 58: /** QUAD_CURVE. */ 59: public static final PieLabelLinkStyle QUAD_CURVE 60: = new PieLabelLinkStyle("PieLabelLinkStyle.QUAD_CURVE"); 61: 62: /** CUBIC_CURVE. */ 63: public static final PieLabelLinkStyle CUBIC_CURVE 64: = new PieLabelLinkStyle("PieLabelLinkStyle.CUBIC_CURVE"); 65: 66: /** The name. */ 67: private String name; 68: 69: /** 70: * Private constructor. 71: * 72: * @param name the name. 73: */ 74: private PieLabelLinkStyle(String name) { 75: this.name = name; 76: } 77: 78: /** 79: * Returns a string representing the object. 80: * 81: * @return The string. 82: */ 83: public String toString() { 84: return this.name; 85: } 86: 87: /** 88: * Returns <code>true</code> if this object is equal to the specified 89: * object, and <code>false</code> otherwise. 90: * 91: * @param obj the object (<code>null</code> permitted). 92: * 93: * @return A boolean. 94: */ 95: public boolean equals(Object obj) { 96: if (this == obj) { 97: return true; 98: } 99: if (!(obj instanceof PieLabelLinkStyle)) { 100: return false; 101: } 102: PieLabelLinkStyle style = (PieLabelLinkStyle) obj; 103: if (!this.name.equals(style.toString())) { 104: return false; 105: } 106: return true; 107: } 108: 109: /** 110: * Returns a hash code for this instance. 111: * 112: * @return A hash code. 113: */ 114: public int hashCode() { 115: return this.name.hashCode(); 116: } 117: 118: /** 119: * Ensures that serialization returns the unique instances. 120: * 121: * @return The object. 122: * 123: * @throws ObjectStreamException if there is a problem. 124: */ 125: private Object readResolve() throws ObjectStreamException { 126: Object result = null; 127: if (this.equals(PieLabelLinkStyle.STANDARD)) { 128: result = PieLabelLinkStyle.STANDARD; 129: } 130: else if (this.equals(PieLabelLinkStyle.QUAD_CURVE)) { 131: result = PieLabelLinkStyle.QUAD_CURVE; 132: } 133: else if (this.equals(PieLabelLinkStyle.CUBIC_CURVE)) { 134: result = PieLabelLinkStyle.CUBIC_CURVE; 135: } 136: return result; 137: } 138: 139: }