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1: /* ======================================================================== 2: * JCommon : a free general purpose class 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/jcommon/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: * VerticalAlignment.java 29: * ---------------------- 30: * (C) Copyright 2004, 2005, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * $Id: VerticalAlignment.java,v 1.4 2005/10/18 13:18:34 mungady Exp $ 36: * 37: * Changes: 38: * -------- 39: * 08-Jan-2004 : Version 1 (DG); 40: * 41: */ 42: 43: package org.jfree.ui; 44: 45: import java.io.ObjectStreamException; 46: import java.io.Serializable; 47: 48: /** 49: * An enumeration of the vertical alignment types (<code>TOP</code>, 50: * <code>BOTTOM</code> and <code>CENTER</code>). 51: * 52: * @author David Gilbert 53: */ 54: public final class VerticalAlignment implements Serializable { 55: 56: /** For serialization. */ 57: private static final long serialVersionUID = 7272397034325429853L; 58: 59: /** Top alignment. */ 60: public static final VerticalAlignment TOP 61: = new VerticalAlignment("VerticalAlignment.TOP"); 62: 63: /** Bottom alignment. */ 64: public static final VerticalAlignment BOTTOM 65: = new VerticalAlignment("VerticalAlignment.BOTTOM"); 66: 67: /** Center alignment. */ 68: public static final VerticalAlignment CENTER 69: = new VerticalAlignment("VerticalAlignment.CENTER"); 70: 71: /** The name. */ 72: private String name; 73: 74: /** 75: * Private constructor. 76: * 77: * @param name the name. 78: */ 79: private VerticalAlignment(final String name) { 80: this.name = name; 81: } 82: 83: /** 84: * Returns a string representing the object. 85: * 86: * @return the string. 87: */ 88: public String toString() { 89: return this.name; 90: } 91: 92: /** 93: * Returns <code>true</code> if this object is equal to the specified 94: * object, and <code>false</code> otherwise. 95: * 96: * @param o the other object. 97: * 98: * @return a boolean. 99: */ 100: public boolean equals(final Object o) { 101: 102: if (this == o) { 103: return true; 104: } 105: if (!(o instanceof VerticalAlignment)) { 106: return false; 107: } 108: 109: final VerticalAlignment alignment = (VerticalAlignment) o; 110: if (!this.name.equals(alignment.name)) { 111: return false; 112: } 113: 114: return true; 115: } 116: 117: /** 118: * Returns a hash code value for the object. 119: * 120: * @return the hashcode 121: */ 122: public int hashCode() { 123: return this.name.hashCode(); 124: } 125: 126: /** 127: * Ensures that serialization returns the unique instances. 128: * 129: * @return The object. 130: * 131: * @throws ObjectStreamException if there is a problem. 132: */ 133: private Object readResolve() throws ObjectStreamException { 134: if (this.equals(VerticalAlignment.TOP)) { 135: return VerticalAlignment.TOP; 136: } 137: else if (this.equals(VerticalAlignment.BOTTOM)) { 138: return VerticalAlignment.BOTTOM; 139: } 140: else if (this.equals(VerticalAlignment.CENTER)) { 141: return VerticalAlignment.CENTER; 142: } 143: else { 144: return null; // this should never happen 145: } 146: } 147: 148: }