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20 package org.xnap.gui.action;
21
22 import java.awt.event.ActionEvent;
23 import java.util.Iterator;
24 import java.util.LinkedList;
25
26 import javax.swing.AbstractAction;
27 import javax.swing.Action;
28
29 import org.xnap.XNap;
30 import org.xnap.gui.util.*;
31
32 /***
33 * Provides an action that clears all histories of <code>Clearable</code>
34 * objects.
35 *
36 * @see xnap.gui.component.HistoryTextField
37 */
38 public class ClearHistoriesAction extends AbstractAction
39 {
40
41 /***
42 * A list of instantiated <code>Clearable</code> objects.
43 *
44 * @see #actionPerformed(ActionEvent)
45 */
46 private static LinkedList references = new LinkedList();
47
48
49
50 public ClearHistoriesAction()
51 {
52 putValue(Action.NAME, XNap.tr("Clear All Histories"));
53 putValue(IconHelper.XNAP_ICON, "eraser.png");
54 putValue(Action.SHORT_DESCRIPTION, XNap.tr("Clears all histories."));
55 }
56
57
58
59 public void actionPerformed(ActionEvent event)
60 {
61 for (Iterator i = references.iterator(); i.hasNext();) {
62 ((Clearable)i.next()).clear();
63 }
64 }
65
66 public static void add(Clearable item)
67 {
68 references.add(item);
69 }
70
71 public static void remove(Clearable item)
72 {
73 references.remove(item);
74 }
75
76 }