1 /*
   2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package java.awt.datatransfer;
  26 
  27 import java.util.EventListener;
  28 
  29 
  30 /**
  31  * Defines an object which listens for {@link FlavorEvent}s.
  32  *
  33  * @author Alexander Gerasimov
  34  * @since 1.5
  35  */
  36 public interface FlavorListener extends EventListener {
  37     /**
  38      * Invoked when the target {@link Clipboard} of the listener
  39      * has changed its available {@link DataFlavor}s.
  40      * <p>
  41      * Some notifications may be redundant &#8212; they are not
  42      * caused by a change of the set of DataFlavors available
  43      * on the clipboard.
  44      * For example, if the clipboard subsystem supposes that
  45      * the system clipboard's contents has been changed but it
  46      * can't ascertain whether its DataFlavors have been changed
  47      * because of some exceptional condition when accessing the
  48      * clipboard, the notification is sent to ensure from omitting
  49      * a significant notification. Ordinarily, those redundant
  50      * notifications should be occasional.
  51      *
  52      * @param e  a <code>FlavorEvent</code> object
  53      */
  54     void flavorsChanged(FlavorEvent e);
  55 }