/*

 * 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.Button;

import java.awt.Color;

import java.awt.Canvas;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Panel;

import java.util.ArrayList;

public class ComponentIsNotDrawnAfterRemoveAddTest {

    private final Frame frame;

    private final Panel panel;

    private final ArrayList<Testable> compList = new ArrayList<Testable>();

    public ComponentIsNotDrawnAfterRemoveAddTest() {

        frame = new Frame("ComponentIsNotDrawnAfterRemoveAddTest");

        frame.setSize(500, 500);

        frame.setLocation(200, 200);

        frame.setLayout(null);

        frame.setBackground(Color.RED);

        panel = new Panel();

        panel.setLayout(null);

        panel.setBounds(25, 100, 455, 295);

        panel.setBackground(Color.GREEN);

        for (int i = 0; i < 10; i++) {

            TestCanvas canv1 = new TestCanvas();

            canv1.setBounds(i * 45 + 5, 15, 30 + i, 30 + i);

            panel.add(canv1);

            compList.add(canv1);

            TestButton btn1 = new TestButton();

            btn1.setBounds(i * 45 + 5, 60, 30 + i, 30 + i);

            panel.add(btn1);

            compList.add(btn1);

            TestCanvas canv2 = new TestCanvas();

            canv2.setBounds(i * 45 + 5, 105, 30 + i, 30 + i);

            panel.add(canv2);

            compList.add(canv2);

            TestButton btn2 = new TestButton();

            btn2.setBounds(i * 45 + 5, 150, 30 + i, 30 + i);

            panel.add(btn2);

            compList.add(btn2);

            TestCanvas canv3 = new TestCanvas();

            canv3.setBounds(i * 45 + 5, 195, 30 + i, 30 + i);

            panel.add(canv3);

            compList.add(canv3);

            TestButton btn3 = new TestButton();

            btn3.setBounds(i * 45 + 5, 240, 30 + i, 30 + i);

            panel.add(btn3);

            compList.add(btn3);

        }

        frame.add(panel);

        frame.setVisible(true);

    }

    private void runTest() {

        try {

            doSleep(1500);

            checkTestableComponents();

            for (int i = 0; i < 5; i++) {

                System.err.println(String.format("Test iteration #%d:", i));

                frame.remove(panel);

                frame.invalidate();

                frame.validate();

                frame.add(panel);

                doSleep(1500);

                checkTestableComponents();

            }

        } finally {

            frame.dispose();

        }

    }

    private void doSleep(long millis) {

        try {

            Thread.sleep(millis);

        } catch (InterruptedException ie) {

            ie.printStackTrace();

        }

    }

    private void checkTestableComponents() throws RuntimeException {

        int notDrawnCompsCount = 0;

        for (Testable comp : compList) {

            if (!comp.wasPaintCalled()) {

                notDrawnCompsCount++;

            } else {

                comp.resetPaintCalledFlag();

            }

        }

        if (notDrawnCompsCount > 0) {

            throw new RuntimeException(String.format(

                "'paint' method of %d components was not called.", notDrawnCompsCount));

        }

    }

    private interface Testable {

        boolean wasPaintCalled();

        void resetPaintCalledFlag();

    }

    private static class TestCanvas extends Canvas implements Testable {

        private volatile boolean paintWasCalled = false;

        @Override

        public void paint(Graphics g) {

            paintWasCalled = true;

            super.paint(g);

            g.setColor(Color.BLUE);

            g.fillRect(0, 0, getWidth(), getHeight());

        }

        @Override

        public boolean wasPaintCalled() {

            return paintWasCalled;

        }

        @Override

        public void resetPaintCalledFlag() {

            paintWasCalled = false;

        }

    }

    private static class TestButton extends Button implements Testable {

        private volatile boolean paintWasCalled = false;

        @Override

        public void paint(Graphics g) {

            paintWasCalled = true;

            super.paint(g);

            g.setColor(Color.YELLOW);

            g.fillRect(0, 0, 15, 15);

        }

        @Override

        public boolean wasPaintCalled() {

            return paintWasCalled;

        }

        @Override

        public void resetPaintCalledFlag() {

            paintWasCalled = false;

        }

    }

    public static void main(String[] args) {

        new ComponentIsNotDrawnAfterRemoveAddTest().runTest();

    }

}