Same as the Java class, except the listeners are transient.

com/gallery/GalleryRemote/GalleryAbstractListModel.java

@@ -0,0 +1,204 @@
+/*
+ * @(#)AbstractListModel.java	1.30 01/12/03
+ *
+ * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
+ * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ */
+
+package com.gallery.GalleryRemote;
+
+import javax.swing.event.*;
+import javax.swing.*;
+import java.io.Serializable;
+import java.util.EventListener;
+
+/**
+ * The abstract definition for the data model that provides
+ * a <code>List</code> with its contents.
+ * <p>
+ * <strong>Warning:</strong>
+ * Serialized objects of this class will not be compatible with
+ * future Swing releases. The current serialization support is
+ * appropriate for short term storage or RMI between applications running
+ * the same version of Swing.  As of 1.4, support for long term storage
+ * of all JavaBeans<sup><font size="-2">TM</font></sup>
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ *
+ * @version 1.30 12/03/01
+ * @author Hans Muller
+ */
+public abstract class GalleryAbstractListModel implements ListModel, Serializable
+{
+    transient protected EventListenerList listenerList = new EventListenerList();
+
+
+    /**
+     * Adds a listener to the list that's notified each time a change
+     * to the data model occurs.
+     *
+     * @param l the <code>ListDataListener</code> to be added
+     */  
+    public void addListDataListener(ListDataListener l) {
+	listenerList.add(ListDataListener.class, l);
+    }
+
+
+    /**
+     * Removes a listener from the list that's notified each time a 
+     * change to the data model occurs.
+     *
+     * @param l the <code>ListDataListener</code> to be removed
+     */  
+    public void removeListDataListener(ListDataListener l) {
+	listenerList.remove(ListDataListener.class, l);
+    }
+
+
+    /**
+     * Returns an array of all the list data listeners
+     * registered on this <code>AbstractListModel</code>.
+     *
+     * @return all of this model's <code>ListDataListener</code>s,
+     *         or an empty array if no list data listeners
+     *         are currently registered
+     * 
+     * @see #addListDataListener
+     * @see #removeListDataListener
+     * 
+     * @since 1.4
+     */
+    public ListDataListener[] getListDataListeners() {
+        return (ListDataListener[])listenerList.getListeners(
+                ListDataListener.class);
+    }
+
+
+    /**
+     * <code>AbstractListModel</code> subclasses must call this method
+     * <b>after</b>
+     * one or more elements of the list change.  The changed elements
+     * are specified by the closed interval index0, index1 -- the endpoints
+     * are included.  Note that
+     * index0 need not be less than or equal to index1.
+     * 
+     * @param source the <code>ListModel</code> that changed, typically "this"
+     * @param index0 one end of the new interval
+     * @param index1 the other end of the new interval
+     * @see EventListenerList
+     * @see DefaultListModel
+     */
+    protected void fireContentsChanged(Object source, int index0, int index1)
+    {
+	Object[] listeners = listenerList.getListenerList();
+	ListDataEvent e = null;
+
+	for (int i = listeners.length - 2; i >= 0; i -= 2) {
+	    if (listeners[i] == ListDataListener.class) {
+		if (e == null) {
+		    e = new ListDataEvent(source, ListDataEvent.CONTENTS_CHANGED, index0, index1);
+		}
+		((ListDataListener)listeners[i+1]).contentsChanged(e);
+	    }	       
+	}
+    }
+
+
+    /**
+     * <code>AbstractListModel</code> subclasses must call this method
+     * <b>after</b>
+     * one or more elements are added to the model.  The new elements
+     * are specified by a closed interval index0, index1 -- the enpoints
+     * are included.  Note that
+     * index0 need not be less than or equal to index1.
+     * 
+     * @param source the <code>ListModel</code> that changed, typically "this"
+     * @param index0 one end of the new interval
+     * @param index1 the other end of the new interval
+     * @see EventListenerList
+     * @see DefaultListModel
+     */
+    protected void fireIntervalAdded(Object source, int index0, int index1)
+    {
+	Object[] listeners = listenerList.getListenerList();
+	ListDataEvent e = null;
+
+	for (int i = listeners.length - 2; i >= 0; i -= 2) {
+	    if (listeners[i] == ListDataListener.class) {
+		if (e == null) {
+		    e = new ListDataEvent(source, ListDataEvent.INTERVAL_ADDED, index0, index1);
+		}
+		((ListDataListener)listeners[i+1]).intervalAdded(e);
+	    }	       
+	}
+    }
+
+
+    /**
+     * <code>AbstractListModel</code> subclasses must call this method
+     * <b>after</b> one or more elements are removed from the model. 
+     * The new elements
+     * are specified by a closed interval index0, index1, i.e. the
+     * range that includes both index0 and index1.  Note that
+     * index0 need not be less than or equal to index1.
+     * 
+     * @param source the ListModel that changed, typically "this"
+     * @param index0 one end of the new interval
+     * @param index1 the other end of the new interval
+     * @see EventListenerList
+     * @see DefaultListModel
+     */
+    protected void fireIntervalRemoved(Object source, int index0, int index1)
+    {
+	Object[] listeners = listenerList.getListenerList();
+	ListDataEvent e = null;
+
+	for (int i = listeners.length - 2; i >= 0; i -= 2) {
+	    if (listeners[i] == ListDataListener.class) {
+		if (e == null) {
+		    e = new ListDataEvent(source, ListDataEvent.INTERVAL_REMOVED, index0, index1);
+		}
+		((ListDataListener)listeners[i+1]).intervalRemoved(e);
+	    }	       
+	}
+    }
+
+    /**
+     * Returns an array of all the objects currently registered as
+     * <code><em>Foo</em>Listener</code>s
+     * upon this model.
+     * <code><em>Foo</em>Listener</code>s
+     * are registered using the <code>add<em>Foo</em>Listener</code> method.
+     * <p>
+     * You can specify the <code>listenerType</code> argument
+     * with a class literal, such as <code><em>Foo</em>Listener.class</code>.
+     * For example, you can query a list model
+     * <code>m</code>
+     * for its list data listeners
+     * with the following code:
+     *
+     * <pre>ListDataListener[] ldls = (ListDataListener[])(m.getListeners(ListDataListener.class));</pre>
+     *
+     * If no such listeners exist,
+     * this method returns an empty array.
+     *
+     * @param listenerType  the type of listeners requested;
+     *          this parameter should specify an interface
+     *          that descends from <code>java.util.EventListener</code>
+     * @return an array of all objects registered as
+     *          <code><em>Foo</em>Listener</code>s
+     *          on this model,
+     *          or an empty array if no such
+     *          listeners have been added
+     * @exception ClassCastException if <code>listenerType</code> doesn't
+     *          specify a class or interface that implements
+     *          <code>java.util.EventListener</code>
+     *
+     * @see #getListDataListeners
+     *
+     * @since 1.3
+     */
+    public EventListener[] getListeners(Class listenerType) { 
+	return listenerList.getListeners(listenerType); 
+    }
+}