1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/rt/emul/compact/src/main/java/java/beans/PropertyChangeEvent.java Tue Feb 26 16:54:16 2013 +0100
1.3 @@ -0,0 +1,164 @@
1.4 +/*
1.5 + * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package java.beans;
1.30 +
1.31 +/**
1.32 + * A "PropertyChange" event gets delivered whenever a bean changes a "bound"
1.33 + * or "constrained" property. A PropertyChangeEvent object is sent as an
1.34 + * argument to the PropertyChangeListener and VetoableChangeListener methods.
1.35 + * <P>
1.36 + * Normally PropertyChangeEvents are accompanied by the name and the old
1.37 + * and new value of the changed property. If the new value is a primitive
1.38 + * type (such as int or boolean) it must be wrapped as the
1.39 + * corresponding java.lang.* Object type (such as Integer or Boolean).
1.40 + * <P>
1.41 + * Null values may be provided for the old and the new values if their
1.42 + * true values are not known.
1.43 + * <P>
1.44 + * An event source may send a null object as the name to indicate that an
1.45 + * arbitrary set of if its properties have changed. In this case the
1.46 + * old and new values should also be null.
1.47 + */
1.48 +
1.49 +public class PropertyChangeEvent extends java.util.EventObject {
1.50 + private static final long serialVersionUID = 7042693688939648123L;
1.51 +
1.52 + /**
1.53 + * Constructs a new <code>PropertyChangeEvent</code>.
1.54 + *
1.55 + * @param source The bean that fired the event.
1.56 + * @param propertyName The programmatic name of the property
1.57 + * that was changed.
1.58 + * @param oldValue The old value of the property.
1.59 + * @param newValue The new value of the property.
1.60 + */
1.61 + public PropertyChangeEvent(Object source, String propertyName,
1.62 + Object oldValue, Object newValue) {
1.63 + super(source);
1.64 + this.propertyName = propertyName;
1.65 + this.newValue = newValue;
1.66 + this.oldValue = oldValue;
1.67 + }
1.68 +
1.69 + /**
1.70 + * Gets the programmatic name of the property that was changed.
1.71 + *
1.72 + * @return The programmatic name of the property that was changed.
1.73 + * May be null if multiple properties have changed.
1.74 + */
1.75 + public String getPropertyName() {
1.76 + return propertyName;
1.77 + }
1.78 +
1.79 + /**
1.80 + * Gets the new value for the property, expressed as an Object.
1.81 + *
1.82 + * @return The new value for the property, expressed as an Object.
1.83 + * May be null if multiple properties have changed.
1.84 + */
1.85 + public Object getNewValue() {
1.86 + return newValue;
1.87 + }
1.88 +
1.89 + /**
1.90 + * Gets the old value for the property, expressed as an Object.
1.91 + *
1.92 + * @return The old value for the property, expressed as an Object.
1.93 + * May be null if multiple properties have changed.
1.94 + */
1.95 + public Object getOldValue() {
1.96 + return oldValue;
1.97 + }
1.98 +
1.99 + /**
1.100 + * Sets the propagationId object for the event.
1.101 + *
1.102 + * @param propagationId The propagationId object for the event.
1.103 + */
1.104 + public void setPropagationId(Object propagationId) {
1.105 + this.propagationId = propagationId;
1.106 + }
1.107 +
1.108 + /**
1.109 + * The "propagationId" field is reserved for future use. In Beans 1.0
1.110 + * the sole requirement is that if a listener catches a PropertyChangeEvent
1.111 + * and then fires a PropertyChangeEvent of its own, then it should
1.112 + * make sure that it propagates the propagationId field from its
1.113 + * incoming event to its outgoing event.
1.114 + *
1.115 + * @return the propagationId object associated with a bound/constrained
1.116 + * property update.
1.117 + */
1.118 + public Object getPropagationId() {
1.119 + return propagationId;
1.120 + }
1.121 +
1.122 + /**
1.123 + * name of the property that changed. May be null, if not known.
1.124 + * @serial
1.125 + */
1.126 + private String propertyName;
1.127 +
1.128 + /**
1.129 + * New value for property. May be null if not known.
1.130 + * @serial
1.131 + */
1.132 + private Object newValue;
1.133 +
1.134 + /**
1.135 + * Previous value for property. May be null if not known.
1.136 + * @serial
1.137 + */
1.138 + private Object oldValue;
1.139 +
1.140 + /**
1.141 + * Propagation ID. May be null.
1.142 + * @serial
1.143 + * @see #getPropagationId
1.144 + */
1.145 + private Object propagationId;
1.146 +
1.147 + /**
1.148 + * Returns a string representation of the object.
1.149 + *
1.150 + * @return a string representation of the object
1.151 + *
1.152 + * @since 1.7
1.153 + */
1.154 + public String toString() {
1.155 + StringBuilder sb = new StringBuilder(getClass().getName());
1.156 + sb.append("[propertyName=").append(getPropertyName());
1.157 + appendTo(sb);
1.158 + sb.append("; oldValue=").append(getOldValue());
1.159 + sb.append("; newValue=").append(getNewValue());
1.160 + sb.append("; propagationId=").append(getPropagationId());
1.161 + sb.append("; source=").append(getSource());
1.162 + return sb.append("]").toString();
1.163 + }
1.164 +
1.165 + void appendTo(StringBuilder sb) {
1.166 + }
1.167 +}