diff options
Diffstat (limited to 'libjava/java/beans/PropertyChangeListenerProxy.java')
-rw-r--r-- | libjava/java/beans/PropertyChangeListenerProxy.java | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/libjava/java/beans/PropertyChangeListenerProxy.java b/libjava/java/beans/PropertyChangeListenerProxy.java deleted file mode 100644 index 68a8153032b..00000000000 --- a/libjava/java/beans/PropertyChangeListenerProxy.java +++ /dev/null @@ -1,102 +0,0 @@ -/* PropertyChangeListenerProxy.java -- adds a name to a property listener - Copyright (C) 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.EventListenerProxy; - -/** - * This class provides an extension to <code>PropertyChangeListener</code> - - * associating a name with the listener. This can be used to filter the - * changes that one is interested in. - * - * @author Eric Blake (ebb9@email.byu.edu) - * @since 1.4 - * @status udpated to 1.4 - */ -public class PropertyChangeListenerProxy extends EventListenerProxy - implements PropertyChangeListener -{ - /** - * The name of the property to listen for. Package visible for use by - * PropertyChangeSupport. - */ - final String propertyName; - - /** - * Create a new proxy which filters property change events and only passes - * changes to the named property on to the delegate. A null propertyName - * or listener does not fail now, but may cause a NullPointerException down - * the road. - * - * @param propertyName the property's name to filter on - * @param listener the delegate listener - */ - public PropertyChangeListenerProxy(String propertyName, - PropertyChangeListener listener) - { - super(listener); - this.propertyName = propertyName; - } - - /** - * Forwards the event on to the delegate if the property name matches. - * - * @param event the event to pass on, if it meets the filter - * @throws NullPointerException if the delegate this was created with is null - */ - public void propertyChange(PropertyChangeEvent event) - { - // Note: Sun does not filter, under the assumption that since - // PropertyChangeSupport unwraps proxys, this method should never be - // called by normal use of listeners. - String name = event == null ? null : event.getPropertyName(); - if (name == null ? propertyName == null : name.equals(propertyName)) - ((PropertyChangeListener) getListener()).propertyChange(event); - } - - /** - * Gets the name of the property this proxy is filtering on. - * - * @return the property name - */ - public String getPropertyName() - { - return propertyName; - } -} // class PropertyChangeListenerProxy |