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