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 &#151; 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   }