WindowDemo.java revision 13978:1993af50385d 
1/*
2 * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package com.sun.swingset3.demos.window;
24
25import java.awt.*;
26import java.awt.event.ActionEvent;
27import java.awt.event.ActionListener;
28import javax.swing.*;
29import javax.swing.border.EmptyBorder;
30import javax.swing.border.LineBorder;
31
32import com.sun.swingset3.DemoProperties;
33import com.sun.swingset3.demos.DemoUtilities;
34
35/**
36 * @author aim
37 */
38@DemoProperties(
39        value = "JWindow Demo",
40        category = "Toplevel Containers",
41        description = "Demonstrates JWindow, a toplevel container with no system border.",
42        sourceFiles = {
43            "com/sun/swingset3/demos/window/WindowDemo.java",
44            "com/sun/swingset3/demos/DemoUtilities.java",
45            "com/sun/swingset3/demos/window/resources/WindowDemo.html",
46            "com/sun/swingset3/demos/window/resources/images/WindowDemo.gif"
47        }
48)
49public final class WindowDemo extends JPanel {
50
51    public static final String SHOW_J_WINDOW = "Show JWindow...";
52    public static final String I_HAVE_NO_SYSTEM_BORDER = "I have no system border.";
53
54    private JWindow window;
55
56    private JComponent windowSpaceholder;
57
58    public WindowDemo() {
59        initComponents();
60    }
61
62    protected void initComponents() {
63        window = createWindow();
64
65        setLayout(new BorderLayout());
66        add(createControlPanel(), BorderLayout.WEST);
67        windowSpaceholder = createWindowSpaceholder(window);
68        add(windowSpaceholder, BorderLayout.CENTER);
69    }
70
71    protected JComponent createControlPanel() {
72        Box controlPanel = Box.createVerticalBox();
73        controlPanel.setBorder(new EmptyBorder(8, 8, 8, 8));
74
75        // Create button to control visibility of frame
76        JButton showButton = new JButton(SHOW_J_WINDOW);
77        showButton.addActionListener(new ShowActionListener());
78        controlPanel.add(showButton);
79
80        return controlPanel;
81    }
82
83    private static JComponent createWindowSpaceholder(JWindow window) {
84        JPanel windowPlaceholder = new JPanel();
85        Dimension prefSize = window.getPreferredSize();
86        prefSize.width += 12;
87        prefSize.height += 12;
88        windowPlaceholder.setPreferredSize(prefSize);
89
90        return windowPlaceholder;
91    }
92
93    private static JWindow createWindow() {
94
95        //<snip>Create window
96        JWindow window = new JWindow();
97        //</snip>
98
99        //<snip>Add a border to the window
100        window.getRootPane().setBorder(new LineBorder(Color.BLACK, 1));
101        //</snip>
102
103        //<snip>Add window's content
104        JLabel label = new JLabel(I_HAVE_NO_SYSTEM_BORDER);
105        label.setHorizontalAlignment(JLabel.CENTER);
106        label.setPreferredSize(new Dimension(250, 200));
107        window.add(label);
108        //</snip>
109
110        //<snip>Initialize window's size
111        // which will shrink-to-fit its contents
112        window.pack();
113        //</snip>
114
115        return window;
116    }
117
118    public void start() {
119        DemoUtilities.setToplevelLocation(window, windowSpaceholder, SwingConstants.CENTER);
120        showWindow();
121    }
122
123    public void stop() {
124        //<snip>Hide window
125        window.setVisible(false);
126        //</snip>
127    }
128
129    public void showWindow() {
130        //<snip>Show window
131        // if window already visible, then bring to the front
132        if (window.isShowing()) {
133            window.toFront();
134        } else {
135            window.setVisible(true);
136        }
137        //</snip>
138    }
139
140    private class ShowActionListener implements ActionListener {
141
142        @Override
143        public void actionPerformed(ActionEvent actionEvent) {
144            showWindow();
145        }
146    }
147
148    public static void main(String args[]) {
149        EventQueue.invokeLater(() -> {
150            JFrame frame = new JFrame();
151            WindowDemo demo = new WindowDemo();
152            frame.add(demo);
153            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
154            frame.pack();
155            frame.setVisible(true);
156            demo.start();
157        });
158    }
159}
160