| /* |
| * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.swing.event; |
| |
| import java.beans.PropertyChangeSupport; |
| import java.beans.PropertyChangeEvent; |
| |
| import javax.swing.SwingUtilities; |
| |
| /** |
| * This subclass of {@code java.beans.PropertyChangeSupport} is almost |
| * identical in functionality. The only difference is if constructed with |
| * {@code SwingPropertyChangeSupport(sourceBean, true)} it ensures |
| * listeners are only ever notified on the <i>Event Dispatch Thread</i>. |
| * |
| * @author Igor Kushnirskiy |
| */ |
| |
| public final class SwingPropertyChangeSupport extends PropertyChangeSupport { |
| |
| /** |
| * Constructs a SwingPropertyChangeSupport object. |
| * |
| * @param sourceBean The bean to be given as the source for any |
| * events. |
| * @throws NullPointerException if {@code sourceBean} is |
| * {@code null} |
| */ |
| public SwingPropertyChangeSupport(Object sourceBean) { |
| this(sourceBean, false); |
| } |
| |
| /** |
| * Constructs a SwingPropertyChangeSupport object. |
| * |
| * @param sourceBean the bean to be given as the source for any events |
| * @param notifyOnEDT whether to notify listeners on the <i>Event |
| * Dispatch Thread</i> only |
| * |
| * @throws NullPointerException if {@code sourceBean} is |
| * {@code null} |
| * @since 1.6 |
| */ |
| public SwingPropertyChangeSupport(Object sourceBean, boolean notifyOnEDT) { |
| super(sourceBean); |
| this.notifyOnEDT = notifyOnEDT; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * <p> |
| * If {@link #isNotifyOnEDT} is {@code true} and called off the |
| * <i>Event Dispatch Thread</i> this implementation uses |
| * {@code SwingUtilities.invokeLater} to send out the notification |
| * on the <i>Event Dispatch Thread</i>. This ensures listeners |
| * are only ever notified on the <i>Event Dispatch Thread</i>. |
| * |
| * @throws NullPointerException if {@code evt} is |
| * {@code null} |
| * @since 1.6 |
| */ |
| public void firePropertyChange(final PropertyChangeEvent evt) { |
| if (evt == null) { |
| throw new NullPointerException(); |
| } |
| if (! isNotifyOnEDT() |
| || SwingUtilities.isEventDispatchThread()) { |
| super.firePropertyChange(evt); |
| } else { |
| SwingUtilities.invokeLater( |
| new Runnable() { |
| public void run() { |
| firePropertyChange(evt); |
| } |
| }); |
| } |
| } |
| |
| /** |
| * Returns {@code notifyOnEDT} property. |
| * |
| * @return {@code notifyOnEDT} property |
| * @see #SwingPropertyChangeSupport(Object sourceBean, boolean notifyOnEDT) |
| * @since 1.6 |
| */ |
| public final boolean isNotifyOnEDT() { |
| return notifyOnEDT; |
| } |
| |
| // Serialization version ID |
| static final long serialVersionUID = 7162625831330845068L; |
| |
| /** |
| * whether to notify listeners on EDT |
| * |
| * @serial |
| * @since 1.6 |
| */ |
| private final boolean notifyOnEDT; |
| } |