Source for java.awt.dnd.DropTargetListener

   1: /* DropTargetListener.java -- listen to events during the drop
   2:    Copyright (C) 2002, 2005  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.awt.dnd;
  40: 
  41: import java.util.EventListener;
  42: 
  43: /**
  44:  * @author Michael Koch (konqueror@gmx.de)
  45:  * @since 1.2
  46:  * @status updated to 1.4
  47:  */
  48: public interface DropTargetListener extends EventListener
  49: {
  50:   /**
  51:    * Called when the cursor hotspot enters a drop site which will accept the
  52:    * drag.
  53:    *
  54:    * @param e the drag source drag event
  55:    */
  56:   void dragEnter (DropTargetDragEvent e);
  57: 
  58:   /**
  59:    * Called when the cursor hotspot moves inside of a drop site which will
  60:    * accept the drag.
  61:    *
  62:    * @param e the drag source drag event
  63:    */
  64:   void dragOver (DropTargetDragEvent e);
  65: 
  66:   /**
  67:    * Called when the user modifies the drop gesture. This is often the case
  68:    * when additional mouse or key events are received during the drag.
  69:    *
  70:    * @param e the drag source drag event
  71:    */
  72:   void dropActionChanged (DropTargetDragEvent e);
  73: 
  74:   /**
  75:    * Called when the cursor hotspot moves outside of a drop site which will
  76:    * accept the drag. This could also happen if the drop site is no longer
  77:    * active, or no longer accepts the drag.
  78:    *
  79:    * @param e the drag source drag event
  80:    */
  81:   void dragExit (DropTargetEvent e);
  82: 
  83:   /**
  84:    * Called when the drag operation has terminated with a drop.
  85:    *
  86:    * @param e the drag source drag event
  87:    */
  88:   void drop (DropTargetDropEvent e);
  89: } // interface DropTargetListener