1/*
2 * Copyright (c) 2014, 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 */
23
24import java.awt.*;
25import java.awt.image.BufferedImage;
26import java.lang.ref.PhantomReference;
27import java.lang.ref.ReferenceQueue;
28import java.util.ArrayList;
29import java.util.Vector;
30
31/*
32 * @test
33 * @key headful
34 * @summary Display a dialog with a parent, the dialog contains all awt components
35 *          added to it & each components are setted with different cursors types.
36 *          Dispose the parent & collect GC. Garbage collection should happen
37 * @author Dmitriy Ermashov (dmitriy.ermashov@oracle.com)
38 * @library ../../../../lib/testlibrary
39 * @build ExtendedRobot
40 * @run main/othervm -Xmx20m DisposeParentGC
41 */
42
43public class DisposeParentGC {
44    Frame parentFrame;
45    ExtendedRobot robot;
46
47    ArrayList<PhantomReference<Dialog>> refs = new ArrayList<PhantomReference<Dialog>>();
48    ReferenceQueue<Dialog> que = new ReferenceQueue<>();
49
50    public static void main(String []args) throws Exception {
51        new DisposeParentGC().doTest();
52    }
53
54    DisposeParentGC() throws Exception {
55        robot = new ExtendedRobot();
56        EventQueue.invokeAndWait(this::initGui);
57    }
58
59    void initGui(){
60        parentFrame = new Frame("Parent Frame");
61        parentFrame.setLayout(new FlowLayout());
62
63        for (int i = 1; i <= 3; i++)
64            createDialog(i);
65
66        parentFrame.setLocation(250, 20);
67        parentFrame.pack();
68        parentFrame.setVisible(true);
69    }
70
71    public void doTest() throws Exception{
72        robot.waitForIdle();
73
74        parentFrame.dispose();
75        robot.waitForIdle();
76
77        Vector garbage = new Vector();
78        while (true) {
79            try {
80                garbage.add(new byte[1000]);
81            } catch (OutOfMemoryError er) {
82                break;
83            }
84        }
85        garbage = null;
86
87        int count = 1;
88        for (; count <= 3; count++)
89            if(que.remove(5000) == null)
90                break;
91
92        if (count < 3)
93            throw new RuntimeException("Count = "+count+". GC didn't collect the objects after the parent is disposed!");
94    }
95
96    public void createDialog(int number) {
97        Dialog child = new Dialog(parentFrame);
98        child.setTitle("Dialog " + number);
99        child.setLayout(new FlowLayout());
100        child.setLocation(20, 140 * number);
101
102        Button button = new Button("Press Me") ;
103        TextArea textArea = new TextArea(5,5);
104        TextField textField = new TextField(10);
105        Choice choice = new Choice();
106        choice.add("One");
107        choice.add("Two");
108        choice.add("Three");
109        choice.add("Four");
110        choice.add("Five");
111        List list = new List();
112        list.add("One");
113        list.add("Two");
114        list.add("Three");
115        list.add("Four");
116        list.add("Five");
117        Checkbox checkBox = new Checkbox("Hai");
118        Scrollbar scrollBar = new Scrollbar(Scrollbar.VERTICAL,0,1,0,200);
119        CheckboxGroup checkboxGroup = new CheckboxGroup();
120        Checkbox radioButton = new Checkbox("Hello" ,true, checkboxGroup);
121        Canvas canvas = new Canvas();
122        Label label = new Label("I am label!");
123        Cursor customCursor = null;
124
125        child.setLayout(new FlowLayout());
126        canvas.setSize(100,100);
127        canvas.setBackground(Color.red);
128
129        button.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));
130        label.setCursor(new Cursor(Cursor.TEXT_CURSOR));
131        choice.setCursor(new Cursor(Cursor.WAIT_CURSOR));
132        list.setCursor(new Cursor(Cursor.HAND_CURSOR));
133        checkBox.setCursor(new Cursor(Cursor.MOVE_CURSOR));
134        radioButton.setCursor(new Cursor(Cursor.SE_RESIZE_CURSOR));
135        scrollBar.setCursor(new Cursor(Cursor.NW_RESIZE_CURSOR));
136        canvas.setCursor(new Cursor(Cursor.W_RESIZE_CURSOR));
137        textField.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
138
139        /* create a custom cursor */
140        Toolkit toolkit = Toolkit.getDefaultToolkit();
141        Dimension d = toolkit.getBestCursorSize(32,32);
142        int color = toolkit.getMaximumCursorColors();
143
144        if(!d.equals(new Dimension(0,0)) && color != 0 )
145            customCursor = toolkit.createCustomCursor(new BufferedImage( 16, 16, BufferedImage.TYPE_INT_RGB ), new Point(10, 10), "custom cursor.");
146        else
147            System.err.println("Platform doesn't support to create a custom cursor.");
148
149        textArea.setCursor(customCursor);
150        child.add(label);
151        child.add(button);
152        child.add(choice);
153        child.add(list);
154        child.add(checkBox);
155        child.add(radioButton);
156        child.add(scrollBar);
157        child.add(canvas);
158        child.add(textArea);
159        child.add(textField);
160        child.add(button);
161        child.revalidate();
162
163        child.pack();
164        child.setVisible(true);
165        refs.add(new PhantomReference<Dialog>(child, que));
166    }
167}
168