CollectionAddObjectOnDropAction


1   /*====================================================================
2   
3   Objectweb Explorer Framework
4   Copyright (C) 2000-2004 INRIA - USTL - LIFL - GOAL
5   Contact: openccm@objectweb.org
6   
7   This library is free software; you can redistribute it and/or
8   modify it under the terms of the GNU Lesser General Public
9   License as published by the Free Software Foundation; either
10  version 2.1 of the License, or any later version.
11  
12  This library is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  Lesser General Public License for more details.
16  
17  You should have received a copy of the GNU Lesser General Public
18  License along with this library; if not, write to the Free Software
19  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
20  USA
21  
22  Initial developer(s): Jerome Moroy, Philippe Merle.
23  Contributor(s): ______________________________________.
24  
25  ====================================================================*/
26  
27  package org.objectweb.util.explorer.plugin.java;
28  
29  import java.util.Collection  ;
30  
31  import org.objectweb.util.explorer.api.DropAction;
32  import org.objectweb.util.explorer.api.DropTreeView;
33  
34  
35  /**
36   * This action adds an element into a <code>java.util.Collection</code> 
37   * object using the Drag&Drop mechanism. 
38   *
39   * @author <a HREF="mailto:Philippe.Merle@lifl.fr">Philippe Merle</a>,
40   *         <a HREF="mailto:Jerome.Moroy@lifl.fr">J�r�me Moroy</a>
41   * 
42   * @version 0.1
43   */
44  public class CollectionAddObjectOnDropAction 
45    implements DropAction 
46  {
47  
48      //==================================================================
49      //
50      // No internal state.
51      //
52      //==================================================================
53  
54      //==================================================================
55      //
56      // No constructor.
57      // 
58      //==================================================================
59  
60      //==================================================================
61      //
62      // No internal method.
63      //
64      //==================================================================
65  
66      //==================================================================
67      //
68      // Public methods for DropAction interface.
69      //
70      //==================================================================
71  
72      /**
73       * Executes the action.
74       * 
75       * @param dropTreeView The current view on the tree.
76       *   
77       * @exception Exception The invocation may thrown every kind of exception.
78       */
79      public void 
80      execute(DropTreeView dropTreeView) 
81      throws Exception  {
82          Collection   collection = (Collection  )dropTreeView.getSelectedObject();
83          Object   objectToAdd = dropTreeView.getDragSourceObject();
84          collection.add(objectToAdd);    
85      }
86          
87  }
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