jtulach@0: /*
jtulach@0:  *                 Sun Public License Notice
jtulach@0:  * 
jtulach@0:  * The contents of this file are subject to the Sun Public License
jtulach@0:  * Version 1.0 (the "License"). You may not use this file except in
jtulach@0:  * compliance with the License. A copy of the License is available at
jtulach@0:  * http://www.sun.com/
jtulach@0:  * 
jtulach@0:  * The Original Code is NetBeans. The Initial Developer of the Original
jtulach@0:  * Code is Sun Microsystems, Inc. Portions Copyright 1999-2006 Sun
jtulach@0:  * Microsystems, Inc. All Rights Reserved.
jtulach@0:  */
jtulach@0: 
jtulach@0: package apipkg;
jtulach@0: 
jtulach@0: import implpkg.Accessor;
jtulach@0: import javax.swing.event.ChangeEvent;
jtulach@0: import javax.swing.event.ChangeListener;
jtulach@0: 
jtulach@0: /** Class in API that everyone can use.
jtulach@0:  *
jtulach@0:  * @author Jaroslav Tulach
jtulach@0:  */
jtulach@3: // BEGIN: design.less.friend.Item
jtulach@0: public final class Item {
jtulach@0:     private int value;
jtulach@0:     private ChangeListener listener;
jtulach@3: 
jtulach@3:     // BEGIN: design.less.friend.Item.static
jtulach@0:     static {
jtulach@0:         Accessor.DEFAULT = new AccessorImpl();
jtulach@0:     }
jtulach@3:     // END: design.less.friend.Item.static
jtulach@0:     
jtulach@0:     /** Contructor for friends */
jtulach@0:     Item() {
jtulach@0:     }
jtulach@0:     
jtulach@0:     /** Anyone can value of the item. At least if it can get a reference to it.
jtulach@0:      */
jtulach@0:     public void setValue(int x) {
jtulach@0:         value = x;
jtulach@0:         ChangeListener l = listener;
jtulach@0:         if (l != null) {
jtulach@0:             l.stateChanged(new ChangeEvent(this));
jtulach@0:         }
jtulach@0:     }
jtulach@0:     
jtulach@0:     /** Anyone can get the value of the item. 
jtulach@0:      */
jtulach@0:     public int getValue() {
jtulach@0:         return value;
jtulach@0:     }
jtulach@0:     
jtulach@0:     /** Only the impl package can listen.
jtulach@0:      */
jtulach@0:     void addChangeListener(ChangeListener l) {
jtulach@0:         assert listener == null;
jtulach@0:         listener = l;
jtulach@0:     }
jtulach@0:     
jtulach@0: }
jtulach@3: // END: design.less.friend.Item