AWT/Swing merge from GNU Classpath.

From-SVN: r56147

libjava/javax/swing/DefaultSingleSelectionModel.java

@@ -0,0 +1,179 @@
+/* DefaultSingleSelectionModel.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;
+
+// Imports
+import java.io.*;
+import java.util.*;
+import javax.swing.event.*;
+
+/**
+ * DefaultSingleSelectionModel
+ * @author	Andrew Selkirk
+ * @version	1.0
+ */
+public class DefaultSingleSelectionModel implements 
+		SingleSelectionModel, Serializable {
+
+	//-------------------------------------------------------------
+	// Variables --------------------------------------------------
+	//-------------------------------------------------------------
+
+	/**
+	 * changeEvent
+	 */
+	protected transient ChangeEvent changeEvent = new ChangeEvent(this);
+
+	/**
+	 * listenerList
+	 */
+	protected EventListenerList listenerList= new EventListenerList();
+
+	/**
+	 * index
+	 */
+	private int index = -1;
+
+
+	//-------------------------------------------------------------
+	// Initialization ---------------------------------------------
+	//-------------------------------------------------------------
+
+	/**
+	 * Constructor DefaultSingleSelectionModel
+	 */
+	public DefaultSingleSelectionModel() {
+		// TODO
+	} // DefaultSingleSelectionModel()
+
+
+	//-------------------------------------------------------------
+	// Methods ----------------------------------------------------
+	//-------------------------------------------------------------
+
+	/**
+	 * getSelectedIndex
+	 * @returns int
+	 */
+	public int getSelectedIndex() {
+		return index;
+	} // getSelectedIndex()
+
+	/**
+	 * setSelectedIndex
+	 * @param index TODO
+	 */
+	public void setSelectedIndex(int index) {
+
+		// Set Data
+		this.index = index;
+
+		// Notify Listeners
+		fireStateChanged();
+
+	} // setSelectedIndex()
+
+	/**
+	 * clearSelection
+	 */
+	public void clearSelection() {
+
+		// Set Data
+		index = -1;
+
+		// Notify Listeners
+		fireStateChanged();
+
+	} // clearSelection()
+
+	/**
+	 * isSelected
+	 * @returns boolean
+	 */
+	public boolean isSelected() {
+		return (index == -1);
+	} // isSelected()
+
+	/**
+	 * addChangeListener
+	 * @param listener TODO
+	 */
+	public void addChangeListener(ChangeListener listener) {
+		listenerList.add(ChangeListener.class, listener);
+	} // addChangeListener()
+
+	/**
+	 * removeChangeListener
+	 * @param listener TODO
+	 */
+	public void removeChangeListener(ChangeListener listener) {
+		listenerList.remove(ChangeListener.class, listener);
+	} // removeChangeListener()
+
+	/**
+	 * fireStateChanged
+	 */
+	protected void fireStateChanged() {
+
+		// Variables
+		ChangeListener	listener;
+		EventListener[]	listeners;
+		int				index;
+
+		// Get Listeners
+		listeners = listenerList.getListeners(ChangeListener.class);
+
+		// Process Listeners
+		for (index = 0; index < listeners.length; index++) {
+			listener = (ChangeListener) listeners[index];
+			listener.stateChanged(changeEvent);
+		} // for
+
+	} // fireStateChanged()
+
+	/**
+	 * getListeners
+	 * @param listenerClass TODO
+	 * @returns EventListener[]
+	 */
+	public EventListener[] getListeners(Class listenerClass) {
+		return listenerList.getListeners(listenerClass);
+	} // getListeners()
+
+
+} // DefaultSingleSelectionModel