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Java > Open Source Codes > org > objectweb > util > browser > plugin > java > map > MapRemoveEntryAction


1 /*====================================================================
2
3 Objectweb Browser Framework
4 Copyright (C) 2000-2003 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): Philippe Merle, Jerome Moroy.
23 Contributor(s): ______________________________________.
24
25 ====================================================================*/
26
27 package org.objectweb.util.browser.plugin.java.map;
28 import java.util.Map JavaDoc;
29
30 import org.objectweb.util.browser.api.MenuItem;
31 import org.objectweb.util.browser.api.MenuItemTreeView;
32 import org.objectweb.util.browser.api.TreeView;
33
34 /**
35  * This action removes an entry from a <code>java.util.Map</code> object.
36  *
37  * @author <a HREF="mailto:Philippe.Merle@lifl.fr">Philippe Merle</a>,
38  * <a HREF="mailto:Jerome.Moroy@lifl.fr">Jérôme Moroy</a>
39  *
40  * @version 0.1
41  */
42 public class MapRemoveEntryAction
43   implements MenuItem
44 {
45
46     //==================================================================
47 //
48 // No internal state.
49 //
50 //==================================================================
51
52     //==================================================================
53 //
54 // No constructor.
55 //
56 //==================================================================
57
58     //==================================================================
59 //
60 // No internal method.
61 //
62 //==================================================================
63
64     //==================================================================
65 //
66 // Public methods for MenuItem.
67 //
68 //==================================================================
69
70     /**
71      * Returns enabled status.
72      */
73     public int getStatus(TreeView treeView)
74     {
75         return MenuItem.ENABLED_STATUS;
76     }
77
78     /**
79      * Removes the mapping for this key from this map.
80      */
81     public void actionPerformed(MenuItemTreeView treeView)
82     throws Exception JavaDoc
83     {
84         // Obtains the selected map.
85 Map JavaDoc map = (Map JavaDoc)treeView.getParentObject();
86         
87         // Obtains the entry to remove.
88 Object JavaDoc objectToRemove = treeView.getSelectedEntry().getName();
89         
90         // Removes the entry.
91 map.remove(objectToRemove);
92     }
93         
94 }
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