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/*
* 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
* @key headful
* @summary Display a dialog with a parent, the dialog contains all awt components
* added to it & each components are setted with different cursors types.
* Dispose the parent & collect GC. Garbage collection should happen
* @author Dmitriy Ermashov (dmitriy.ermashov@oracle.com)
* @library ../../../../lib/testlibrary
* @build ExtendedRobot
* @run main/othervm -Xmx20m DisposeParentGC
*/
public class DisposeParentGC {
Frame parentFrame;
ExtendedRobot robot;
ArrayList<PhantomReference<Dialog>> refs = new ArrayList<PhantomReference<Dialog>>();
ReferenceQueue<Dialog> que = new ReferenceQueue<>();
public static void main(String []args) throws Exception {
new DisposeParentGC().doTest();
}
DisposeParentGC() throws Exception {
robot = new ExtendedRobot();
EventQueue.invokeAndWait(this::initGui);
}
void initGui(){
parentFrame = new Frame("Parent Frame");
parentFrame.setLayout(new FlowLayout());
for (int i = 1; i <= 3; i++)
createDialog(i);
parentFrame.setLocation(250, 20);
parentFrame.pack();
parentFrame.setVisible(true);
}
public void doTest() throws Exception{
robot.waitForIdle();
parentFrame.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;
if (count < 3)
throw new RuntimeException("Count = "+count+". GC didn't collect the objects after the parent is disposed!");
}
public void createDialog(int number) {
Dialog child = new Dialog(parentFrame);
child.setTitle("Dialog " + number);
child.setLayout(new FlowLayout());
child.setLocation(20, 140 * number);
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();
Label label = new Label("I am label!");
Cursor customCursor = null;
child.setLayout(new FlowLayout());
canvas.setSize(100,100);
canvas.setBackground(Color.red);
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);
child.add(label);
child.add(button);
child.add(choice);
child.add(list);
child.add(checkBox);
child.add(radioButton);
child.add(scrollBar);
child.add(canvas);
child.add(textArea);
child.add(textField);
child.add(button);
child.revalidate();
child.pack();
child.setVisible(true);
refs.add(new PhantomReference<Dialog>(child, que));
}
}
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