/*

 * Copyright (c) 2014, 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.

 */

import java.awt.*;

import java.awt.image.BufferedImage;

import java.lang.ref.PhantomReference;

import java.lang.ref.ReferenceQueue;

import java.util.ArrayList;

import java.util.Vector;

/*

 * @test

 * @summary Verify that disposed frames are collected with GC

 * @author Dmitriy Ermashov (dmitriy.ermashov@oracle.com)

 * @library ../../../../lib/testlibrary

 * @build ExtendedRobot

 * @run main/othervm -Xmx20m FramesGC

 */

public class FramesGC {

    ExtendedRobot robot;

    ArrayList<PhantomReference<Frame>> refs = new ArrayList<PhantomReference<Frame>>();

    ReferenceQueue<Frame> que = new ReferenceQueue<Frame>();

    public static void main(String []args) throws Exception {

        new FramesGC().doTest();

    }

    FramesGC() throws Exception{

        robot = new ExtendedRobot();

    }

    void doTest() throws Exception {

        for( int i = 1; i <= 3; i++) {

            final int j = i;

            EventQueue.invokeAndWait(() -> {

                createFrame(j);

            });

        }

        robot.waitForIdle();

        for (Frame f : Frame.getFrames())

            f.dispose();

        robot.waitForIdle();

        Vector garbage = new Vector();

        while (true) {

            try {

                garbage.add(new byte[1000]);

            } catch (OutOfMemoryError er) {

                break;

            }

        }

        garbage = null;

        int count = 1;

        for(; count <= 3; count++)

            if(que.remove(5000) == null)

                break;

        System.out.println("Total no of instances eligible for GC = " + count);

        if(count < 3)

            throw new RuntimeException("Count = "+count+". Test failed!");

    }

    void createFrame(int i){

        Frame frame = new Frame("Frame " + i);

        Button button=new Button("Press Me");

        TextArea textArea=new TextArea(5,5);

        TextField textField=new TextField(10);

        Choice choice=new Choice();

        choice.add("One");

        choice.add("Two");

        choice.add("Three");

        choice.add("Four");

        choice.add("Five");

        List list = new List();

        list.add("One");

        list.add("Two");

        list.add("Three");

        list.add("Four");

        list.add("Five");

        Checkbox checkBox= new Checkbox("Hai");

        Scrollbar scrollBar=new Scrollbar(Scrollbar.VERTICAL,0,1,0,200);

        CheckboxGroup checkboxGroup=new CheckboxGroup();

        Checkbox radioButton=new Checkbox("Hello" ,true, checkboxGroup);

        Canvas canvas=new Canvas();

        canvas.setSize(100, 100);

        canvas.setBackground(java.awt.Color.red);

        Label label=new Label("I am label.!");

        Cursor customCursor=null;

        frame.setLayout(new java.awt.FlowLayout());

        button.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));

        label.setCursor(new Cursor(Cursor.TEXT_CURSOR));

        choice.setCursor(new Cursor(Cursor.WAIT_CURSOR));

        list.setCursor(new Cursor(Cursor.HAND_CURSOR));

        checkBox.setCursor(new Cursor(Cursor.MOVE_CURSOR));

        radioButton.setCursor(new Cursor(Cursor.SE_RESIZE_CURSOR));

        scrollBar.setCursor(new Cursor(Cursor.NW_RESIZE_CURSOR));

        canvas.setCursor(new Cursor(Cursor.W_RESIZE_CURSOR));

        textField.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

        /* create a custom cursor */

        Toolkit toolkit = Toolkit.getDefaultToolkit();

        Dimension d = toolkit.getBestCursorSize(32,32);

        int color = toolkit.getMaximumCursorColors();

        if(!d.equals(new Dimension(0,0)) && color != 0 )

            customCursor = toolkit.createCustomCursor(new BufferedImage( 16, 16, BufferedImage.TYPE_INT_RGB ), new Point(10, 10), "custom cursor.");

        else

            System.err.println("Platform doesn't support to create a custom cursor.");

        textArea.setCursor(customCursor);

        frame.add(label);

        frame.add(button);

        frame.add(choice);

        frame.add(list);

        frame.add(checkBox);

        frame.add(radioButton);

        frame.add(scrollBar);

        frame.add(canvas);

        frame.add(textArea);

        frame.add(textField);

        frame.add(button);

        frame.setLocation(20, 140 * i);

        frame.pack();

        frame.setVisible(true);

        refs.add(new PhantomReference<Frame>(frame, que));

    }

}