01: /*
02: * Copyright (C) 2004 NNL Technology AB
03: * Visit www.infonode.net for information about InfoNode(R)
04: * products and how to contact NNL Technology AB.
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU General Public License
08: * as published by the Free Software Foundation; either version 2
09: * of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: * GNU General Public License for more details.
15: *
16: * You should have received a copy of the GNU General Public License
17: * along with this program; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19: * MA 02111-1307, USA.
20: */
21:
22: // $Id: ComponentCache.java,v 1.4 2005/12/04 13:46:05 jesper Exp $
23: package net.infonode.tabbedpanel.theme.internal.laftheme;
24:
25: import javax.swing.*;
26: import java.awt.*;
27: import java.lang.ref.SoftReference;
28: import java.util.ArrayList;
29:
30: public class ComponentCache {
31: private ArrayList cache = new ArrayList(10);
32:
33: private int index = 0;
34:
35: ComponentCache() {
36: for (int i = 0; i < 1; i++)
37: cache.add(new SoftReference(createComponent()));
38: }
39:
40: void reset() {
41: index = 0;
42: }
43:
44: Component getComponent() {
45: JComponent c = null;
46:
47: if (index == cache.size()) {
48: c = createComponent();
49: cache.add(new SoftReference(c));
50: } else {
51: c = (JComponent) ((SoftReference) cache.get(index)).get();
52: if (c == null) {
53: cache.remove(index);
54: c = createComponent();
55: cache.add(new SoftReference(c));
56: }
57: }
58:
59: index++;
60: c.setOpaque(false);
61:
62: return c;
63: }
64:
65: private JComponent createComponent() {
66: return new JComponent() {
67: };
68: }
69: }
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