/*

 * Copyright (c) 1996, 2000, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

package java.awt;

import java.awt.event.*;

/**

 * The interface for objects which contain a set of items for

 * which zero or more can be selected.

 *

 * @author Amy Fowler

 */

public interface ItemSelectable {

    /**

     * Returns the selected items or <code>null</code> if no

     * items are selected.

     */

    public Object[] getSelectedObjects();

    /**

     * Adds a listener to receive item events when the state of an item is

     * changed by the user. Item events are not sent when an item's

     * state is set programmatically.  If <code>l</code> is

     * <code>null</code>, no exception is thrown and no action is performed.

     *

     * @param    l the listener to receive events

     * @see ItemEvent

     */

    public void addItemListener(ItemListener l);

    /**

     * Removes an item listener.

     * If <code>l</code> is <code>null</code>,

     * no exception is thrown and no action is performed.

     *

     * @param   l the listener being removed

     * @see ItemEvent

     */

    public void removeItemListener(ItemListener l);

}