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 * @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/client
39 * @build ExtendedRobot
40 * @run main/othervm -Xmx20m DisposeParentGC
41 */
42
43 public 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 }