/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Pavel Dolgov
* @version $Revision: 1.3 $
*/
package java.applet;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Image;
import java.awt.Panel;
import java.awt.Toolkit;
import java.awt.Window;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Locale;
import javax.accessibility.AccessibleContext;
import javax.accessibility.AccessibleRole;
import javax.accessibility.AccessibleState;
import javax.accessibility.AccessibleStateSet;
import org.apache.harmony.applet.AudioClipImpl;
import org.apache.harmony.awt.AWTPermissionCollection;
import org.apache.harmony.awt.FieldsAccessor;
public class Applet extends Panel {
private static final long serialVersionUID = -5836846270535785031L;
private transient AppletStub stub;
private transient AccessibleContext accessibleContext;
/** monitor for applet's private data */
private final transient Object appletLock = new Object();
protected class AccessibleApplet extends Panel.AccessibleAWTPanel {
private static final long serialVersionUID = 8127374778187708896L;
protected AccessibleApplet() {
super();
}
@Override
public AccessibleRole getAccessibleRole() {
return AccessibleRole.FRAME;
}
@Override
public AccessibleStateSet getAccessibleStateSet() {
AccessibleStateSet set = super.getAccessibleStateSet();
Window owner = null;
for (Component c = Applet.this; c != null; c = c.getParent()) {
if (c instanceof Window) {
owner = (Window)c;
break;
}
}
if (owner != null) {
if (owner.isActive()) {
set.add(AccessibleState.ACTIVE);
}
}
return set;
}
}
public Applet() throws HeadlessException {
if (GraphicsEnvironment.isHeadless()) {
throw new HeadlessException();
}
}
public void init() {
// do nothing by specification
}
public void start() {
// do nothing by specification
}
public void destroy() {
// do nothing by specification
}
public void stop() {
// do nothing by specification
}
@SuppressWarnings("deprecation")
@Deprecated
@Override
public void resize(int width, int height) {
synchronized(appletLock) {
stub.appletResize(width, height);
}
}
@SuppressWarnings("deprecation")
@Deprecated
@Override
public void resize(Dimension d) {
synchronized(appletLock) {
stub.appletResize(d.width, d.height);
}
}
public URL getCodeBase() {
synchronized(appletLock) {
return stub.getCodeBase();
}
}
@Override
public AccessibleContext getAccessibleContext() {
synchronized(appletLock) {
if (accessibleContext == null) {
accessibleContext = new AccessibleApplet();
}
return accessibleContext;
}
}
public AppletContext getAppletContext() {
synchronized(appletLock) {
return stub.getAppletContext();
}
}
public String getAppletInfo() {
// return null by specification
return null;
}
public AudioClip getAudioClip(URL url, String name) {
return getAppletContext().getAudioClip(appendURL(url, name));
}
public AudioClip getAudioClip(URL url) {
return getAppletContext().getAudioClip(url);
}
public URL getDocumentBase() {
synchronized(appletLock) {
return stub.getDocumentBase();
}
}
public Image getImage(URL url) {
return Toolkit.getDefaultToolkit().getImage(url);
}
public Image getImage(URL url, String name) {
return getAppletContext().getImage(appendURL(url, name));
}
@Override
public Locale getLocale() {
return super.getLocale();
}
public String getParameter(String name) {
synchronized(appletLock) {
return stub.getParameter(name);
}
}
public String[][] getParameterInfo() {
// return null by specification
return null;
}
public boolean isActive() {
synchronized(appletLock) {
return stub.isActive();
}
}
public static final AudioClip newAudioClip(URL url) {
return new AudioClipImpl(url);
}
public void play(URL url, String name) {
AudioClip clip = newAudioClip(appendURL(url, name));
clip.play();
}
public void play(URL url) {
AudioClip clip = newAudioClip(url);
clip.play();
}
public final void setStub(AppletStub stub) {
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(AWTPermissionCollection.SET_APPLET_STUB_PERMISSION);
}
synchronized(appletLock) {
this.stub = stub;
}
}
public void showStatus(String msg) {
synchronized(appletLock) {
stub.getAppletContext().showStatus(msg);
}
}
private static URL appendURL(URL url, String name) {
try {
return new URL(url.toString() + name);
} catch (MalformedURLException e) {
return null;
}
}
private void readObject(ObjectInputStream stream)
throws IOException, ClassNotFoundException {
stream.defaultReadObject();
FieldsAccessor accessor = new FieldsAccessor(Applet.class, this);
accessor.set("appletLock", new Object());
}
}