AWT/Swing merge from GNU Classpath.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@56147 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 248 insertions, 0 deletions

diff --git a/libjava/javax/swing/event/SwingPropertyChangeSupport.java b/libjava/javax/swing/event/SwingPropertyChangeSupport.java
new file mode 100644
index 00000000000..2bb0d64aca6
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+++ b/libjava/javax/swing/event/SwingPropertyChangeSupport.java
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+/* SwingPropertyChangeSupport.java --
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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 javax.swing.event;
+
+// Imports
+import java.beans.*;
+import java.io.*;
+import java.util.*;
+
+/**
+ * SwingPropertyChangeSupport
+ * @author Andrew Selkirk
+*/
+public final	class SwingPropertyChangeSupport
+				extends PropertyChangeSupport {
+
+	//-------------------------------------------------------------
+	// Variables --------------------------------------------------
+	//-------------------------------------------------------------
+
+	/**
+	 * listeners
+	 */
+	private transient EventListenerList listeners;
+
+	/**
+	 * propertyListeners
+	 */
+	private Hashtable propertyListeners;
+
+	/**
+	 * source
+	 */
+	private Object source;
+
+
+	//-------------------------------------------------------------
+	// Initialization ---------------------------------------------
+	//-------------------------------------------------------------
+
+	/**
+	 * Constructor SwingPropertyChangeSupport
+	 * @param source TODO
+	 */
+	public SwingPropertyChangeSupport(Object source) {
+		super(source);
+		this.source = source;
+		this.listeners = new EventListenerList();
+		this.propertyListeners = new Hashtable();
+	} // SwingPropertyChangeSupport()
+
+
+	//-------------------------------------------------------------
+	// Methods ----------------------------------------------------
+	//-------------------------------------------------------------
+
+	/**
+	 * writeObject
+	 * @param stream TODO
+	 * @exception IOException TODO
+	 */
+	private void writeObject(ObjectOutputStream stream) throws IOException {
+		// TODO
+	} // writeObject()
+
+	/**
+	 * readObject
+	 * @param stream TODO
+	 * @exception ClassNotFoundException TODO
+	 * @exception IOException TODO
+	 */
+	private void readObject(ObjectInputStream stream) throws ClassNotFoundException, IOException {
+		// TODO
+	} // readObject()
+
+	/**
+	 * addPropertyChangeListener
+	 * @param listener TODO
+	 */
+	public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
+		listeners.add(PropertyChangeListener.class, listener);
+	} // addPropertyChangeListener()
+
+	/**
+	 * addPropertyChangeListener
+	 * @param propertyName TODO
+	 * @param listener TODO
+	 */
+	public synchronized void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) {
+
+		// Variables
+		EventListenerList	list;
+
+		// Get Listener list
+		list = (EventListenerList) propertyListeners.get(propertyName);
+		if (list == null) {
+			list = new EventListenerList();
+			propertyListeners.put(propertyName, list);
+		} // if
+
+		// Add Listeners
+		list.add(PropertyChangeListener.class, listener);
+
+	} // addPropertyChangeListener()
+
+	/**
+	 * removePropertyChangeListener
+	 * @param listener TODO
+	 */
+	public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
+		listeners.remove(PropertyChangeListener.class, listener);
+	} // removePropertyChangeListener()
+
+	/**
+	 * removePropertyChangeListener
+	 * @param propertyName TODO
+	 * @param listener TODO
+	 */
+	public synchronized void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) {
+
+		// Variables
+		EventListenerList	list;
+
+		// Get Listener list
+		list = (EventListenerList) propertyListeners.get(propertyName);
+		if (list == null) {
+			return;
+		} // if
+
+		// Remove Listeners
+		list.remove(PropertyChangeListener.class, listener);
+
+		// Clean up propertyListeners
+		if (list.getListenerCount() == 0) {
+			propertyListeners.remove(propertyName);
+		} // if
+
+	} // removePropertyChangeListener()
+
+	/**
+	 * firePropertyChange
+	 * @param propertyName TODO
+	 * @param oldValue TODO
+	 * @param newValue TODO
+	 */
+	public void firePropertyChange(String propertyName, Object oldValue, Object newValue) {
+
+		// Variables
+		PropertyChangeEvent	event;
+
+		// Create Property Change Event
+		event = new PropertyChangeEvent(source, propertyName, oldValue, newValue);
+
+		// Fire Event
+		firePropertyChange(event);
+
+	} // firePropertyChange()
+
+	/**
+	 * firePropertyChange
+	 * @param event TODO
+	 */
+	public void firePropertyChange(PropertyChangeEvent event) {
+
+		// Variables
+		EventListenerList		list;
+		EventListener[]			listenerList;
+		int						index;
+		PropertyChangeListener	listener;
+
+		// Check Values if they are equal
+		if (event.getOldValue() == null || event.getNewValue() == null ||
+			event.getOldValue().equals(event.getNewValue()) == true) {
+			return;
+		} // if
+
+		// Process Main Listener List
+		listenerList = listeners.getListeners(PropertyChangeListener.class);
+		for (index = 0; index < listenerList.length; index++) {
+			listener = (PropertyChangeListener) listenerList[index];
+			listener.propertyChange(event);
+		} // for
+
+		// Process Property Listener List
+		list = (EventListenerList) propertyListeners.get(event.getPropertyName());
+		if (list != null) {
+			listenerList = list.getListeners(PropertyChangeListener.class);
+			for (index = 0; index < listenerList.length; index++) {
+				listener = (PropertyChangeListener) listenerList[index];
+				listener.propertyChange(event);
+			} // for
+		} // if
+
+	} // firePropertyChange()
+
+	/**
+	 * hasListeners
+	 * @param propertyName TODO
+	 * @returns boolean
+	 */
+	public synchronized boolean hasListeners(String propertyName) {
+
+		// Get Listener list
+		if (propertyListeners.get(propertyName) == null) {
+			return false;
+		} // if
+
+		return true;
+
+	} // hasListeners()
+
+
+} // SwingPropertyChangeSupport