01: /*
02: * @(#)Panel.java 1.10 06/10/10
03: *
04: * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: *
26: */
27: package java.awt;
28:
29: /**
30: * <code>Panel</code> is the simplest container class. A panel
31: * provides space in which an application can attach any other
32: * component, including other panels.
33: * <p>
34: * The default layout manager for a panel is the
35: * <code>FlowLayout</code> layout manager.
36: *
37: * @version 1.22, 08/13/01
38: * @author Sami Shaio
39: * @see java.awt.FlowLayout
40: * @since JDK1.0
41: */
42: public class Panel extends Container {
43: final static LayoutManager panelLayout = new FlowLayout();
44: private static final String base = "panel";
45: private static int nameCounter = 0;
46: /*
47: * JDK 1.1 serialVersionUID
48: */
49: private static final long serialVersionUID = -2728009084054400034L;
50:
51: /**
52: * Creates a new panel using the default layout manager.
53: * The default layout manager for all panels is the
54: * <code>FlowLayout</code> class.
55: * @since JDK1.0
56: */
57: public Panel() {
58: this (panelLayout);
59: }
60:
61: /**
62: * Creates a new panel with the specified layout manager.
63: * @param layout the layout manager for this panel.
64: * @since JDK1.1
65: */
66: public Panel(LayoutManager layout) {
67: setLayout(layout);
68: }
69:
70: /**
71: * Construct a name for this component. Called by getName() when the
72: * name is null.
73: */
74: String constructComponentName() {
75: return base + nameCounter++;
76: }
77:
78: boolean isLightweightWhenDisplayable() {
79: return false;
80: }
81: }
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