| /* |
| * 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)); |
| } |
| } |