/*

 * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.swingset3.demos.window;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

import javax.swing.border.EmptyBorder;

import javax.swing.border.LineBorder;

import com.sun.swingset3.DemoProperties;

import com.sun.swingset3.demos.DemoUtilities;

/**

 * @author aim

 */

@DemoProperties(

        value = "JWindow Demo",

        category = "Toplevel Containers",

        description = "Demonstrates JWindow, a toplevel container with no system border.",

        sourceFiles = {

            "com/sun/swingset3/demos/window/WindowDemo.java",

            "com/sun/swingset3/demos/DemoUtilities.java",

            "com/sun/swingset3/demos/window/resources/WindowDemo.html",

            "com/sun/swingset3/demos/window/resources/images/WindowDemo.gif"

        }

)

public final class WindowDemo extends JPanel {

    public static final String SHOW_J_WINDOW = "Show JWindow...";

    public static final String I_HAVE_NO_SYSTEM_BORDER = "I have no system border.";

    private JWindow window;

    private JComponent windowSpaceholder;

    public WindowDemo() {

        initComponents();

    }

    protected void initComponents() {

        window = createWindow();

        setLayout(new BorderLayout());

        add(createControlPanel(), BorderLayout.WEST);

        windowSpaceholder = createWindowSpaceholder(window);

        add(windowSpaceholder, BorderLayout.CENTER);

    }

    protected JComponent createControlPanel() {

        Box controlPanel = Box.createVerticalBox();

        controlPanel.setBorder(new EmptyBorder(8, 8, 8, 8));

        // Create button to control visibility of frame

        JButton showButton = new JButton(SHOW_J_WINDOW);

        showButton.addActionListener(new ShowActionListener());

        controlPanel.add(showButton);

        return controlPanel;

    }

    private static JComponent createWindowSpaceholder(JWindow window) {

        JPanel windowPlaceholder = new JPanel();

        Dimension prefSize = window.getPreferredSize();

        prefSize.width += 12;

        prefSize.height += 12;

        windowPlaceholder.setPreferredSize(prefSize);

        return windowPlaceholder;

    }

    private static JWindow createWindow() {

        //<snip>Create window

        JWindow window = new JWindow();

        //</snip>

        //<snip>Add a border to the window

        window.getRootPane().setBorder(new LineBorder(Color.BLACK, 1));

        //</snip>

        //<snip>Add window's content

        JLabel label = new JLabel(I_HAVE_NO_SYSTEM_BORDER);

        label.setHorizontalAlignment(JLabel.CENTER);

        label.setPreferredSize(new Dimension(250, 200));

        window.add(label);

        //</snip>

        //<snip>Initialize window's size

        // which will shrink-to-fit its contents

        window.pack();

        //</snip>

        return window;

    }

    public void start() {

        DemoUtilities.setToplevelLocation(window, windowSpaceholder, SwingConstants.CENTER);

        showWindow();

    }

    public void stop() {

        //<snip>Hide window

        window.setVisible(false);

        //</snip>

    }

    public void showWindow() {

        //<snip>Show window

        // if window already visible, then bring to the front

        if (window.isShowing()) {

            window.toFront();

        } else {

            window.setVisible(true);

        }

        //</snip>

    }

    private class ShowActionListener implements ActionListener {

        @Override

        public void actionPerformed(ActionEvent actionEvent) {

            showWindow();

        }

    }

    public static void main(String args[]) {

        EventQueue.invokeLater(() -> {

            JFrame frame = new JFrame();

            WindowDemo demo = new WindowDemo();

            frame.add(demo);

            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            frame.pack();

            frame.setVisible(true);

            demo.start();

        });

    }

}