1 /*
   2  * Copyright (c) 1997, 2008, 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 
  26 package java.awt.dnd;
  27 
  28 import java.util.EventObject;
  29 import java.awt.dnd.DropTargetContext;
  30 
  31 /**
  32  * The {@code DropTargetEvent} is the base
  33  * class for both the {@code DropTargetDragEvent}
  34  * and the {@code DropTargetDropEvent}.
  35  * It encapsulates the current state of the Drag and
  36  * Drop operations, in particular the current
  37  * {@code DropTargetContext}.
  38  *
  39  * @since 1.2
  40  *
  41  */
  42 
  43 public class DropTargetEvent extends java.util.EventObject {
  44 
  45     private static final long serialVersionUID = 2821229066521922993L;
  46 
  47     /**
  48      * Construct a {@code DropTargetEvent} object with
  49      * the specified {@code DropTargetContext}.
  50      *
  51      * @param dtc The {@code DropTargetContext}
  52      * @throws NullPointerException if {@code dtc} equals {@code null}.
  53      * @see #getSource()
  54      * @see #getDropTargetContext()
  55      */
  56 
  57     public DropTargetEvent(DropTargetContext dtc) {
  58         super(dtc.getDropTarget());
  59 
  60         context  = dtc;
  61     }
  62 
  63     /**
  64      * This method returns the {@code DropTargetContext}
  65      * associated with this {@code DropTargetEvent}.
  66      *
  67      * @return the {@code DropTargetContext}
  68      */
  69 
  70     public DropTargetContext getDropTargetContext() {
  71         return context;
  72     }
  73 
  74     /**
  75      * The {@code DropTargetContext} associated with this
  76      * {@code DropTargetEvent}.
  77      *
  78      * @serial
  79      */
  80     protected DropTargetContext   context;
  81 }
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