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* 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
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* questions.
*/
/*
* @test
* @bug 4682386
* @summary Tests for PropertyChangeSupport refactoring
* @author Mark Davidson
*/
import java.beans.Beans;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JMenuItem;
import javax.swing.JProgressBar;
import javax.swing.JTextArea;
import javax.swing.JTextPane;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.JTabbedPane;
import javax.swing.JTree;
import javax.swing.JTable;
/**
* This class tests the multi-threaded access to PropertyChangeSupport and
* will also use reflection to test propertyChanges on Swing components.
* <p/>
* There is no new functionality from the implementation of this RFE.
* Semantically, it should be equivalent.
*/
public class Test4682386 {
private static final String FOO = "foo";
private static final String BAR = "bar";
private static final int NUM_LISTENERS = 100;
private static final boolean DEBUG = true;
private static final Class[] TYPES = {
JApplet.class,
JButton.class,
JCheckBox.class,
JComboBox.class,
JLabel.class,
JList.class,
JMenuItem.class,
JProgressBar.class,
JTextArea.class,
JTextPane.class,
JTextField.class,
JToolBar.class,
JTabbedPane.class,
JTree.class,
JTable.class,
};
public static void main(String[] args) {
testSwingProperties();
// tests the multi-threaded access
TestBean bean = new TestBean();
Thread add = new Thread(new AddThread(bean));
Thread remove = new Thread(new RemoveThread(bean));
Thread prop = new Thread(new PropertyThread(bean));
add.start();
prop.start();
remove.start();
}
/**
* Should be exectuted with $JAVA_HOME/lib/dt.jar in the classpath
* so that there will be a lot more bound properties.
* <p/>
* This test isn't really appropriate for automated testing.
*/
private static void testSwingProperties() {
long start = System.currentTimeMillis();
for (Class type : TYPES) {
try {
Object bean = Beans.instantiate(type.getClassLoader(), type.getName());
JComponent comp = (JComponent) bean;
for (int k = 0; k < NUM_LISTENERS; k++) {
comp.addPropertyChangeListener(new PropertyListener());
}
for (PropertyDescriptor pd : getPropertyDescriptors(type)) {
if (pd.isBound()) {
if (DEBUG) {
System.out.println("Bound property found: " + pd.getName());
}
Method read = pd.getReadMethod();
Method write = pd.getWriteMethod();
try {
write.invoke(
bean,
getValue(
pd.getPropertyType(),
read.invoke(bean)));
} catch (Exception ex) {
// do nothing - just move on.
if (DEBUG) {
System.out.println("Reflective method invocation Exception for " + type + " : " + ex.getMessage());
}
}
}
}
} catch (Exception ex) {
// do nothing - just move on.
if (DEBUG) {
System.out.println("Exception for " + type.getName() +
" : " + ex.getMessage());
}
}
}
System.out.println("Exec time (ms): " + (System.currentTimeMillis() - start));
}
/**
* Gets a fake value from a type and old value;
*/
public static Object getValue(Class type, Object value) {
if (String.class.equals(type)) {
return "test string";
}
if (value instanceof Integer) {
Integer i = (Integer) value;
return Integer.valueOf(i + 1);
}
if (value instanceof Boolean) {
Boolean b = (Boolean) value;
return Boolean.valueOf(!b);
}
return null;
}
public static PropertyDescriptor[] getPropertyDescriptors(Class type) {
try {
return Introspector.getBeanInfo(type).getPropertyDescriptors();
} catch (IntrospectionException exception) {
throw new Error("unexpected exception", exception);
}
}
private static void sleep(long ms) {
try {
Thread.sleep(ms);
} catch (InterruptedException exception) {
}
}
private static class AddThread implements Runnable {
private final TestBean bean;
AddThread(TestBean bean) {
this.bean = bean;
}
public void run() {
for (int i = 0; i < NUM_LISTENERS; i++) {
for (int j = 0; j < 10; j++) {
this.bean.addPropertyChangeListener(new PropertyListener());
}
if (DEBUG) {
System.out.println("10 listeners added");
}
sleep(25L);
}
}
}
private static class RemoveThread implements Runnable {
private final TestBean bean;
RemoveThread(TestBean bean) {
this.bean = bean;
}
public void run() {
for (int k = 0; k < NUM_LISTENERS; k++) {
sleep(100L);
PropertyChangeListener[] listeners = this.bean.getPropertyChangeListners();
for (int i = listeners.length - 1; i >= 0; i--) {
this.bean.removePropertyChangeListener(listeners[i]);
}
if (DEBUG) {
System.out.println(listeners.length + " listeners removed");
}
}
}
}
private static class PropertyThread implements Runnable {
private final TestBean bean;
PropertyThread(TestBean bean) {
this.bean = bean;
}
public void run() {
for (int i = 0; i < NUM_LISTENERS; i++) {
boolean flag = this.bean.isFoo();
this.bean.setFoo(!flag);
this.bean.setBar(Boolean.toString(flag));
if (DEBUG) {
System.out.println("Executed property changes");
}
sleep(40L);
}
}
}
/**
* Handler for the property change events.
*/
private static class PropertyListener implements PropertyChangeListener {
public void propertyChange(PropertyChangeEvent event) {
// blank since this should execute as fast as possible.
}
}
/**
* A simple bean to test multi-threaded acccess to the listeners.
*/
public static class TestBean {
private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
private boolean foo;
private String bar;
public void addPropertyChangeListener(PropertyChangeListener listener) {
this.pcs.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
this.pcs.removePropertyChangeListener(listener);
}
public PropertyChangeListener[] getPropertyChangeListners() {
return this.pcs.getPropertyChangeListeners();
}
public boolean isFoo() {
return this.foo;
}
public void setFoo(boolean foo) {
boolean old = this.foo;
this.foo = foo;
this.pcs.firePropertyChange(FOO, old, foo);
}
public String getBar() {
return this.bar;
}
public void setBar(String bar) {
String old = this.bar;
this.bar = bar;
this.pcs.firePropertyChange(BAR, old, bar);
}
}
}