itemselectable.java

《移动Agent技术》一书的所有章节源代码。

/*
 * @(#)ItemSelectable.java	1.4 97/01/06
 * 
 * Copyright (c) 1995, 1996 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 * 
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
 * THIS SOFTWARE OR ITS DERIVATIVES.
 * 
 * CopyrightVersion 1.1_beta
 * 
 */

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.
 *
 * @version 1.4 01/06/97
 * @author Amy Fowler
 */

public interface ItemSelectable {

    /**
     * Returns the selected items or null if no items are selected.
     */
    public Object[] getSelectedObjects();

    /**
     * Add a listener to recieve item events when the state of
     * an item changes.
     * @param l the listener to recieve events
     * @see ItemEvent
     */    
    public void addItemListener(ItemListener l);

    /**
     * Removes an item listener.
     * @param l the listener being removed
     * @see ItemEvent
     */ 
    public void removeItemListener(ItemListener l);

}