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Java > Open Source Codes > org > objectstyle > cayenne > modeler > util > RecentFileMenu


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
4  * ObjectStyle Group - http://objectstyle.org/
5  *
6  * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7  * of the software. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
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13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
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17  * notice, this list of conditions and the following disclaimer in
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22  * must include the following acknowlegement:
23  * "This product includes software developed by independent contributors
24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
29  * or promote products derived from this software without prior written
30  * permission. For written permission, email
31  * "andrus at objectstyle dot org".
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34  * or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
35  * names without prior written permission.
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37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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51  * This software consists of voluntary contributions made by many
52  * individuals and hosted on ObjectStyle Group web site. For more
53  * information on the ObjectStyle Group, please see
54  * <http://objectstyle.org/>.
55  */
56 package org.objectstyle.cayenne.modeler.util;
57
58 import java.awt.Component JavaDoc;
59 import java.util.Vector JavaDoc;
60
61 import javax.swing.Action JavaDoc;
62 import javax.swing.JMenu JavaDoc;
63 import javax.swing.JMenuItem JavaDoc;
64
65 import org.objectstyle.cayenne.modeler.Application;
66 import org.objectstyle.cayenne.modeler.ModelerPreferences;
67 import org.objectstyle.cayenne.modeler.action.OpenProjectAction;
68
69 /**
70  * Menu that contains a list of previously used files. It is built from CayenneModeler
71  * preferences by calling <code>rebuildFromPreferences</code>.
72  *
73  * @author Andrei Adamchik
74  */
75 public class RecentFileMenu extends JMenu JavaDoc {
76
77     /**
78      * Constructor for RecentFileMenu.
79      */
80     public RecentFileMenu(String JavaDoc s) {
81         super(s);
82     }
83
84     /**
85      * @see javax.swing.JMenu#add(JMenuItem)
86      */
87     public RecentFileMenuItem add(RecentFileMenuItem menuItem) {
88         return (RecentFileMenuItem) super.add(menuItem);
89     }
90
91     /**
92      * Rebuilds internal menu items list with the files stored in CayenneModeler
93      * properences.
94      */
95     public void rebuildFromPreferences() {
96         ModelerPreferences pref = ModelerPreferences.getPreferences();
97         Vector JavaDoc arr = pref.getVector(ModelerPreferences.LAST_PROJ_FILES);
98         while (arr.size() > 4) {
99             arr.remove(arr.size() - 1);
100         }
101
102         // readd menus
103 Component JavaDoc[] comps = getMenuComponents();
104         int curSize = comps.length;
105         int prefSize = arr.size();
106
107         for (int i = 0; i < prefSize; i++) {
108             String JavaDoc name = (String JavaDoc) arr.get(i);
109
110             if (i < curSize) {
111                 // update existing one
112 RecentFileMenuItem item = (RecentFileMenuItem) comps[i];
113                 item.setText(name);
114             }
115             else {
116                 // add a new one
117 RecentFileMenuItem item = new RecentFileMenuItem(name);
118                 item.setAction(findAction());
119                 add(item);
120             }
121         }
122
123         // remove any hanging items
124 for (int i = curSize - 1; i >= prefSize; i--) {
125             remove(i);
126         }
127     }
128
129     protected Action JavaDoc findAction() {
130         return Application.getInstance().getAction(OpenProjectAction.getActionName());
131     }
132 }
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