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Java > Open Source Codes > java > awt > ItemSelectable


1 /*
2  * @(#)ItemSelectable.java 1.16 03/12/19
3  *
4  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6  */
7
8 package java.awt;
9
10 import java.awt.event.*;
11
12 /**
13  * The interface for objects which contain a set of items for
14  * which zero or more can be selected.
15  *
16  * @version 1.16 12/19/03
17  * @author Amy Fowler
18  */
19
20 public interface ItemSelectable {
21
22     /**
23      * Returns the selected items or <code>null</code> if no
24      * items are selected.
25      */
26     public Object JavaDoc[] getSelectedObjects();
27
28     /**
29      * Adds a listener to receive item events when the state of an item is
30      * changed by the user. Item events are not sent when an item's
31      * state is set programmatically. If <code>l</code> is
32      * <code>null</code>, no exception is thrown and no action is performed.
33      *
34      * @param l the listener to receive events
35      * @see ItemEvent
36      */
37     public void addItemListener(ItemListener l);
38
39     /**
40      * Removes an item listener.
41      * If <code>l</code> is <code>null</code>,
42      * no exception is thrown and no action is performed.
43      *
44      * @param l the listener being removed
45      * @see ItemEvent
46      */
47     public void removeItemListener(ItemListener l);
48 }
49
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