From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../classpath/java/beans/PropertyChangeEvent.java | 189 +++++++++++++++++++++ 1 file changed, 189 insertions(+) create mode 100644 libjava/classpath/java/beans/PropertyChangeEvent.java (limited to 'libjava/classpath/java/beans/PropertyChangeEvent.java') diff --git a/libjava/classpath/java/beans/PropertyChangeEvent.java b/libjava/classpath/java/beans/PropertyChangeEvent.java new file mode 100644 index 000000000..3e3f948e3 --- /dev/null +++ b/libjava/classpath/java/beans/PropertyChangeEvent.java @@ -0,0 +1,189 @@ +/* PropertyChangeEvent.java -- describes a change in a property + Copyright (C) 1998, 2000, 2002, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.beans; + +import java.util.EventObject; + +/** + * PropertyChangeEvents are fired in the PropertyChange and VetoableChange + * event classes. They represent the old and new values as well as the + * source Bean. If the old or new value is a primitive type, it must be + * wrapped in the appropriate wrapper type (java.lang.Integer for int, etc., + * etc.). + * + *

If the old or new values are unknown (although why that would be I do + * not know), they may be null. Also, if the set of properties itself has + * changed, the name should be null, and the old and new values may also be + * null. Right now Sun put in a propagationId, reserved for future use. Read + * the comments on the constructor and on setPropagationId for more + * information. + * + * @author John Keiser + * @author Eric Blake (ebb9@email.byu.edu) + * @since 1.1 + * @status udpated to 1.4 + */ +public class PropertyChangeEvent extends EventObject +{ + /** + * Compatible with JDK 1.1+. + */ + private static final long serialVersionUID = 7042693688939648123L; + + /** + * The name of the property that changed, may be null. Package visible for + * use by PropertyChangeSupport. + * + * @serial the changed property name + */ + final String propertyName; + + /** + * The new value of the property, may be null. Package visible for use by + * PropertyChangeSupport. + * + * @serial the new property value + */ + final Object newValue; + + /** + * The old value of the property, may be null. Package visible for use by + * PropertyChangeSupport. + * + * @serial the old property value + */ + final Object oldValue; + + /** + * The propagation ID, reserved for future use. May be null. + * + * @see #getPropagationId() + * @serial the Propagation ID + */ + private Object propagationId; + + /** + * Create a new PropertyChangeEvent. Remember that if you received a + * PropertyChangeEvent and are sending a new one, you should also set the + * propagation ID from the old PropertyChangeEvent. + * + * @param source the Bean containing the property + * @param propertyName the property's name + * @param oldVal the old value of the property + * @param newVal the new value of the property + * @throws IllegalArgumentException if source is null + */ + public PropertyChangeEvent(Object source, String propertyName, + Object oldVal, Object newVal) + { + super(source); + this.propertyName = propertyName; + oldValue = oldVal; + newValue = newVal; + } + + /** + * Get the property name. May be null if multiple properties changed. + * + * @return the property name + */ + public String getPropertyName() + { + return propertyName; + } + + /** + * Get the property's new value. May be null if multiple properties changed. + * + * @return the property's new value + */ + public Object getNewValue() + { + return newValue; + } + + /** + * Get the property's old value. May be null if multiple properties changed. + * + * @return the property's old value + */ + public Object getOldValue() + { + return oldValue; + } + + /** + * Set the propagation ID. This is a way for the event to be passed from + * hand to hand and retain a little extra state. Right now it is unused, + * but it should be propagated anyway so that future versions of JavaBeans + * can use it, for God knows what. + * + * @param propagationId the propagation ID + * @see #getPropagationId() + */ + public void setPropagationId(Object propagationId) + { + this.propagationId = propagationId; + } + + /** + * Get the propagation ID. Right now, it is not used for anything. + * + * @return the propagation ID + * @see #setPropagationId(Object) + */ + public Object getPropagationId() + { + return propagationId; + } + + /** + * Utility method to rollback a change. + * + * @param event the event to rollback + * @return a new event with old and new swapped + */ + PropertyChangeEvent rollback() + { + PropertyChangeEvent result + = new PropertyChangeEvent(source, propertyName, newValue, oldValue); + result.propagationId = propagationId; + return result; + } +} // class PropertyChangeEvent -- cgit v1.2.3