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 * Copyright (c) 2015, 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
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 */

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Window;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.ContainerAdapter;
import java.awt.event.WindowStateListener;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;

import java.awt.Component;
import javax.swing.JOptionPane;

/**
  * @test
  * @bug 8039345 
  * @author Prasanta Sadhukhan
  * @run main/manual ComponentResizeTest
  * @summary Resizes JFrame so that component drawn inside it gets repainted
  * without leaving any trails
  */
public class  ComponentResizeTest extends JFrame{
    static final JFrame demoFrame = new JFrame();
    
     public static void testresize() {

        try {
            Thread.sleep(5000);
            for (int i = 0; i < 20; i++) {
                demoFrame.setSize(demoFrame.getWidth() + 5, demoFrame.getHeight() + 5);
                Thread.sleep(1000);
                        
            }
        } catch (InterruptedException ex) {
            Logger.getLogger(ComponentResizeTest.class.getName()).log(Level.SEVERE, null, ex);
        }
        int confirm = JOptionPane.showConfirmDialog(
                                    (Component) null, 
                   "Did the component resize work without leaving any trails?",
                   "alert", JOptionPane.YES_NO_OPTION);
        if (confirm == JOptionPane.YES_OPTION) {
            System.out.println("Test passed");
        } else {
            System.out.println("Test failed");
            throw new RuntimeException("Component resize leaves trail");
        } 
    }

    public static void main(String[] args) throws Exception {
        demoFrame.setSize(300, 300);
        demoFrame.setLayout(new FlowLayout());
        demoFrame.setDefaultCloseOperation(EXIT_ON_CLOSE);
        demoFrame.setUndecorated(true);
        demoFrame.setBackground(new Color(0f, 0, 0, 0.1f));
        JCheckBox b = new JCheckBox("Whatever");
        demoFrame.paintAll(null);
        b.setOpaque(true);
        demoFrame.add(b);
        demoFrame.add(new JButton());
        demoFrame.setVisible(true);
        
        try {
            testresize();
        } finally {
            demoFrame.dispose();
        }
    }
}