Jumbo patch:

* Imported beans and serialization
* Updated IA-64 port
* Miscellaneous bug fixes

From-SVN: r34028

1 files changed, 245 insertions, 0 deletions

diff --git a/libjava/java/beans/VetoableChangeSupport.java b/libjava/java/beans/VetoableChangeSupport.java
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+++ b/libjava/java/beans/VetoableChangeSupport.java
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+/*
+ * java.beans.VetoableChangeSupport: part of the Java Class Libraries project.
+ * Copyright (C) 1998 Free Software Foundation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
+ */
+
+package java.beans;
+import java.util.Hashtable;
+import java.util.Vector;
+
+/**
+ ** VetoableChangeSupport makes it easy to fire vetoable
+ ** change events and handle listeners as well as reversion
+ ** of old values when things go wrong.
+ **
+ ** @author John Keiser
+ ** @since JDK1.1
+ ** @version 1.2.0, 15 Mar 1998
+ **/
+
+public class VetoableChangeSupport implements java.io.Serializable {
+	Hashtable propertyListeners = new Hashtable();
+	Vector listeners = new Vector();
+	Object bean;
+
+	/** Create VetoableChangeSupport to work with a specific
+	 ** source bean.
+	 ** @param bean the source bean to use.
+	 **/
+	public VetoableChangeSupport(Object bean) {
+		this.bean = bean;
+	}
+
+	/** Adds a VetoableChangeListener to the list of listeners.
+	 ** All property change events will be sent to this listener.
+	 ** <P>
+	 **
+	 ** The listener add is not unique: that is, <em>n</em> adds with
+	 ** the same listener will result in <em>n</em> events being sent
+	 ** to that listener for every property change.
+	 ** <P>
+	 **
+	 ** Adding a null listener will cause undefined behavior.
+	 **
+	 ** @param l the listener to add.
+	 **/
+	public void addVetoableChangeListener(VetoableChangeListener l) {
+		listeners.addElement(l);
+	}
+
+	/** Adds a VetoableChangeListener listening on the specified property.
+	 ** Events will be sent to the listener for that particular property.
+	 ** <P>
+	 **
+	 ** The listener add is not unique; that is, <em>n</em> adds on a
+	 ** particular property for a particular listener will result in
+	 ** <em>n</em> events being sent to that listener when that
+	 ** property is changed.
+	 ** <P>
+	 **
+	 ** The effect is cumulative, too; if you are registered to listen
+	 ** to receive events on all property changes, and then you
+	 ** register on a particular property, you will receive change
+	 ** events for that property twice.
+	 ** <P>
+	 **
+	 ** Adding a null listener will cause undefined behavior.
+	 **
+	 ** @param propertyName the name of the property to listen on.
+	 ** @param l the listener to add.
+	 **/
+	public void addVetoableChangeListener(String propertyName, VetoableChangeListener l) {
+		synchronized(propertyListeners) {
+			Vector v = (Vector)propertyListeners.get(propertyName);
+			try {
+				v.addElement(l);
+			} catch(NullPointerException e) {
+				/* If v is not found, create a new vector. */
+				v = new Vector();
+				v.addElement(l);
+				propertyListeners.put(propertyName, v);
+			}
+		}
+	}
+
+	/** Removes a VetoableChangeListener from the list of listeners.
+	 ** If any specific properties are being listened on, they must
+	 ** be deregistered by themselves; this will only remove the
+	 ** general listener to all properties.
+	 ** <P>
+	 **
+	 ** If <code>add()</code> has been called multiple times for a
+	 ** particular listener, <code>remove()</code> will have to be
+	 ** called the same number of times to deregister it.
+	 **
+	 ** @param l the listener to remove.
+	 **/
+	public void removeVetoableChangeListener(VetoableChangeListener l) {
+		listeners.removeElement(l);
+	}
+
+	/** Removes a VetoableChangeListener from listening to a specific property.
+	 ** <P>
+	 **
+	 ** If <code>add()</code> has been called multiple times for a
+	 ** particular listener on a property, <code>remove()</code> will
+	 ** have to be called the same number of times to deregister it.
+	 **
+	 ** @param propertyName the property to stop listening on.
+	 ** @param l the listener to remove.
+	 **/
+	public void removeVetoableChangeListener(String propertyName, VetoableChangeListener l) {
+		synchronized(propertyListeners) {
+			Vector v = (Vector)propertyListeners.get(propertyName);
+			try {
+				v.removeElement(l);
+				if(v.size() == 0) {
+					propertyListeners.remove(propertyName);
+				}
+			} catch(NullPointerException e) {
+				/* if v is not found, do nothing. */
+			}
+		}
+	}
+
+
+	/** Fire a VetoableChangeEvent to all the listeners.
+	 ** If any listener objects, a reversion event will be sent to
+	 ** those listeners who received the initial event.
+	 **
+	 ** @param proposedChange the event to send.
+	 ** @exception PropertyVetoException if the change is vetoed.
+	 **/
+	public void fireVetoableChange(PropertyChangeEvent proposedChange) throws PropertyVetoException {
+		int currentListener=0;
+		try {
+			for(;currentListener<listeners.size();currentListener++) {
+				((VetoableChangeListener)listeners.elementAt(currentListener)).vetoableChange(proposedChange);
+			}
+		} catch(PropertyVetoException e) {
+			PropertyChangeEvent reversion = new PropertyChangeEvent(proposedChange.getSource(),proposedChange.getPropertyName(),proposedChange.getNewValue(),proposedChange.getOldValue());
+			for(int sendAgain=0;sendAgain<currentListener;sendAgain++) {
+				try {
+					((VetoableChangeListener)listeners.elementAt(sendAgain)).vetoableChange(reversion);
+				} catch(PropertyVetoException e2) {
+				}
+			}
+			throw e;
+		}
+
+		Vector moreListeners = (Vector)propertyListeners.get(proposedChange.getPropertyName());
+		if(moreListeners != null) {
+			try {
+				for(currentListener = 0; currentListener < moreListeners.size(); currentListener++) {
+					((VetoableChangeListener)moreListeners.elementAt(currentListener)).vetoableChange(proposedChange);
+				}
+			} catch(PropertyVetoException e) {
+				PropertyChangeEvent reversion = new PropertyChangeEvent(proposedChange.getSource(),proposedChange.getPropertyName(),proposedChange.getNewValue(),proposedChange.getOldValue());
+				for(int sendAgain=0;sendAgain<listeners.size();sendAgain++) {
+					try {
+						((VetoableChangeListener)listeners.elementAt(currentListener)).vetoableChange(proposedChange);
+					} catch(PropertyVetoException e2) {		
+					}
+				}
+
+				for(int sendAgain=0;sendAgain<currentListener;sendAgain++) {
+					try {
+						((VetoableChangeListener)moreListeners.elementAt(sendAgain)).vetoableChange(reversion);
+					} catch(PropertyVetoException e2) {
+					}
+				}
+				throw e;
+			}
+		}
+	}
+
+	/** Fire a VetoableChangeEvent containing the old and new values of the property to all the listeners.
+	 ** If any listener objects, a reversion event will be sent to
+	 ** those listeners who received the initial event.
+	 **
+	 ** @param propertyName the name of the property that
+	 ** changed.
+	 ** @param oldVal the old value.
+	 ** @param newVal the new value.
+	 ** @exception PropertyVetoException if the change is vetoed.
+	 **/
+	public void fireVetoableChange(String propertyName, Object oldVal, Object newVal) throws PropertyVetoException {
+		fireVetoableChange(new PropertyChangeEvent(bean,propertyName,oldVal,newVal));
+	}
+
+	/** Fire a VetoableChangeEvent containing the old and new values of the property to all the listeners.
+	 ** If any listener objects, a reversion event will be sent to
+	 ** those listeners who received the initial event.
+	 **
+	 ** @param propertyName the name of the property that
+	 ** changed.
+	 ** @param oldVal the old value.
+	 ** @param newVal the new value.
+	 ** @exception PropertyVetoException if the change is vetoed.
+	 **/
+	public void fireVetoableChange(String propertyName, boolean oldVal, boolean newVal) throws PropertyVetoException {
+		fireVetoableChange(new PropertyChangeEvent(bean,propertyName,new Boolean(oldVal),new Boolean(newVal)));
+	}
+
+	/** Fire a VetoableChangeEvent containing the old and new values of the property to all the listeners.
+	 ** If any listener objects, a reversion event will be sent to
+	 ** those listeners who received the initial event.
+	 **
+	 ** @param propertyName the name of the property that
+	 ** changed.
+	 ** @param oldVal the old value.
+	 ** @param newVal the new value.
+	 ** @exception PropertyVetoException if the change is vetoed.
+	 **/
+	public void fireVetoableChange(String propertyName, int oldVal, int newVal) throws PropertyVetoException {
+		fireVetoableChange(new PropertyChangeEvent(bean,propertyName,new Integer(oldVal),new Integer(newVal)));
+	}
+
+
+	/** Tell whether the specified property is being listened on or not.
+	 ** This will only return <code>true</code> if there are listeners
+	 ** on all properties or if there is a listener specifically on this
+	 ** property.
+	 **
+	 ** @param propertyName the property that may be listened on
+	 ** @return whether the property is being listened on
+	 **/
+	public boolean hasListeners(String propertyName) {
+		return listeners.size() > 0  || propertyListeners.get(propertyName) != null;
+	}
+}