Removed dead code

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@467 232f8b59-042b-4e1e-8c03-345bb8c30851

2 files changed, 735 insertions, 0 deletions

diff --git a/doc/userguide/index.html b/doc/userguide/index.html
index 5f95a866a..21287743a 100644
--- a/doc/userguide/index.html
+++ b/doc/userguide/index.html
@@ -16,6 +16,7 @@
   <UL>
     <LI> Local installation for development
     <LI> Java Web Start integration
+    <LI> Applet support
   </UL>
   <LI> Creating a GLDrawable
   <LI> Writing a GLEventListener
@@ -159,6 +160,38 @@ JNLP file is
 
 </P>
 
+<H3> Applet support </H3>
+
+<P>
+
+Lilian Chamontin, in conjunction with several other members of the
+JOGL community, has contributed a JOGL applet installer. This
+installer uses some clever tricks to allow deployment of unsigned
+applets which use JOGL into existing web browsers and JREs as far back
+as 1.4.2, which is the earliest version of Java supported by JOGL.
+
+</P>
+<P>
+
+The JOGLAppletInstaller is distributed inside jogl.jar as a utility
+class in com.sun.opengl.utils. It requires that the developer host a
+local, signed copy of jogl.jar and all of the jogl-natives jars; the
+certificates must be the same on all of these jars. Note that in the
+release builds of JOGL all of these jars are signed by Sun
+Microsystems, so the developer can deploy applets without needing any
+certificates.
+
+</P>
+<P>
+
+The JOGLAppletInstaller javadoc describes the basic steps for
+deployment of an applet utilizing JOGL. Please refer to this
+documentation for more information. A live example of deploying an
+unsigned JOGL applet will be added to this documentation shortly once
+the first signed build of the JOGLAppletInstaller has been shipped.
+
+</P>
+
 <H2> Creating a GLDrawable </H2>
 
 <P>
diff --git a/src/classes/com/sun/opengl/utils/JOGLAppletLauncher.java b/src/classes/com/sun/opengl/utils/JOGLAppletLauncher.java
new file mode 100755
index 000000000..c3899e36c
--- /dev/null
+++ b/src/classes/com/sun/opengl/utils/JOGLAppletLauncher.java
@@ -0,0 +1,702 @@
+/* This java class is distributed under the BSD license.
+ *
+ * Copyright 2005 Lilian Chamontin.
+ * contact lilian.chamontin at f r e e . f r
+ */
+
+/*
+ * Portions Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ */
+
+package com.sun.opengl.utils;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Label;
+import java.awt.Panel;
+import java.applet.Applet;
+import java.applet.AppletStub;
+import java.applet.AppletContext;
+import java.io.*;
+import java.net.*;
+import java.security.cert.*;
+import java.util.*;
+import java.util.jar.*;
+import javax.swing.*;
+
+import javax.media.opengl.*;
+
+
+/** Basic JOGL installer for Applets. The key functionality this class
+ *  supplies is the ability to deploy unsigned applets which use JOGL.
+ *  It may also be used to deploy signed applets in which case
+ *  multiple security dialogs will be displayed. <p>
+ *
+ *  On the server side the codebase must contain jogl.jar and all of
+ *  the jogl-natives-*.jar files from the standard JOGL distribution.
+ *  This is the location from which the JOGL library used by the
+ *  applet is downloaded. The codebase additionally contains the jar
+ *  file of the user's potentially untrusted applet. The jogl.jar and
+ *  all jogl-natives jars must be signed by the same entity, which is
+ *  typically Sun Microsystems, Inc.
+ *
+ * Sample applet code:
+ * <pre>
+ * <applet code="com.sun.opengl.utils.JOGLAppletInstaller"
+ *      width=600
+ *      height=400
+ *      codebase="/lib"
+ *      archive="jogl.jar,your_applet.jar">
+ *   <param name="subapplet.classname" VALUE="untrusted.JOGLApplet">
+ *   <param name="subapplet.displayname" VALUE="My JOGL Applet">
+ *   <param name="progressbar" value="true">
+ *   <param name="cache_archive" VALUE="jogl.jar,your_applet.jar">
+ *   <param name="cache_archive_ex" VALUE="jogl.jar;preload,your_applet.jar;preload">
+ * </applet>
+ * </pre>
+ * <p>
+ * 
+ * There are some limitations with this approach. It is not possible
+ * to specify e.g. -Dsun.java2d.noddraw=true or
+ * -Dsun.java2d.opengl=true for better control over the Java2D
+ * pipeline as it is with Java Web Start. There appear to be issues
+ * with multiple JOGL-based applets on the same web page, though
+ * multiple instances of the same applet appear to work. The latter
+ * may simply be a bug which needs to be fixed. <p>
+ * 
+ * The JOGL natives are cached in the user's home directory (the value
+ * of the "user.home" system property in Java) under the directory
+ * .jogl_ext. The Java Plug-In is responsible for performing all other
+ * jar caching. If the JOGL installation is updated on the server, the
+ * .jogl_ext cache will automatically be updated. <p>
+ * 
+ * This technique requires that JOGL has not been installed in to the
+ * JRE under e.g. jre/lib/ext. If problems are seen when deploying
+ * this applet launcher, the first question to ask the end user is
+ * whether jogl.jar and any associated DLLs, .so's, etc. are installed
+ * directly in to the JRE. The applet launcher has been tested
+ * primarily under Mozilla and Firefox; there may be problems when
+ * running under, for example, Opera. <p>
+ *
+ * @author Lilian Chamontin
+ * @author Kenneth Russell
+ */
+public class JOGLAppletLauncher extends Applet {
+  static {
+    try {
+      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+    } catch (Exception ignore) {
+    }
+  }
+
+  // metadata for native libraries
+  private static class NativeLibInfo {
+    private String osName;
+    private String osArch;
+    private String nativeJar;
+    private String nativePrefix;
+    private String nativeSuffix;
+
+    public NativeLibInfo(String osName, String osArch, String nativeJar, String nativePrefix, String nativeSuffix) {
+      this.osName       = osName;
+      this.osArch       = osArch;
+      this.nativeJar    = nativeJar;
+      this.nativePrefix = nativePrefix;
+      this.nativeSuffix = nativeSuffix;
+    }
+
+    public boolean matchesOSAndArch(String osName, String osArch) {
+      if (osName.startsWith(this.osName)) {
+        if ((this.osArch == null) ||
+            (osArch.startsWith(this.osArch))) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    public boolean matchesNativeLib(String nativeLibraryName) {
+      if (nativeLibraryName.toLowerCase().endsWith(nativeSuffix)) {
+        return true;
+      }
+      return false;
+    }
+
+    public String getNativeJarName() {
+      return nativeJar;
+    }
+
+    public String getNativeLibName(String baseName) {
+      return nativePrefix + baseName + nativeSuffix;
+    }
+
+    public boolean isMacOS() {
+      return (osName.equals("mac"));
+    }
+  }
+
+  private static final NativeLibInfo[] allNativeLibInfo = {
+    new NativeLibInfo("win",   null,    "jogl-natives-win32.jar",    "",    ".dll"),
+    new NativeLibInfo("mac",   null,    "jogl-natives-macosx.jar",   "lib", ".jnilib"),
+    new NativeLibInfo("linux", null,    "jogl-natives-linux.jar",    "lib", ".so"),
+    new NativeLibInfo("sunos", "sparc", "jogl-natives-solsparc.jar", "lib", ".so"),
+    new NativeLibInfo("sunos", "x86",   "jogl-natives-solsparc.jar", "lib", ".so")
+  };
+
+  private NativeLibInfo nativeLibInfo;
+  // Library names computed once the jar comes down.
+  // The signatures of these native libraries are checked before
+  // installing them.
+  private String[] nativeLibNames;
+
+  /** The applet we have to start */
+  private Applet subApplet;
+
+  private String subAppletClassName; // from applet PARAM
+  private String subAppletDisplayName; // from applet PARAM
+  /** URL string to an image used while installing */
+  private String subAppletImageName; // from applet PARAM
+
+  private String installDirectory; // (defines a private directory for native libs)
+
+  private JPanel loaderPanel = new JPanel(new BorderLayout());
+
+  private JProgressBar progressBar = new JProgressBar(0,100);
+
+  private boolean isInitOk = false;
+
+  /** false once start() has been invoked */
+  private boolean firstStart = true;
+
+  /** true if start() has passed successfully */
+  private boolean joglStarted = false;
+
+  public JOGLAppletLauncher() {
+  }
+
+  /** Applet initialization */
+  public void init()  {
+
+    this.subAppletClassName = getParameter("subapplet.classname");
+    if (subAppletClassName == null){
+      displayError("Init failed : Missing subapplet.classname argument");
+      return;
+    }
+    this.subAppletDisplayName = getParameter("subapplet.displayname");
+    if (subAppletDisplayName == null){
+      subAppletDisplayName = "Applet";
+    }
+
+    this.subAppletImageName = getParameter("subapplet.image");
+
+    initLoaderLayout();
+    validate();
+
+    String codeBase = getCodeBase().toExternalForm().substring(7); // minus http://
+
+    this.installDirectory = codeBase.replace(':', '_')
+      .replace('.', '_').replace('/', '_').replace('~','_'); // clean up the name
+
+    String osName = System.getProperty("os.name").toLowerCase();
+    String osArch = System.getProperty("os.arch").toLowerCase();
+    if (checkOSAndArch(osName, osArch)) {
+      this.isInitOk = true;
+    } else {
+      displayError("Init failed : Unsupported os / arch ( " + osName + " / " + osArch + " )");
+    }
+  }
+
+  private void displayMessage(String message){
+    progressBar.setString(message);
+  }
+
+  private void displayError(String errorMessage){
+    progressBar.setString("Error : " + errorMessage);
+  }
+
+  private void initLoaderLayout(){
+    setLayout(new BorderLayout());
+    progressBar.setBorderPainted(true);
+    progressBar.setStringPainted(true);
+    progressBar.setString("Loading...");
+    boolean includeImage = false;
+    ImageIcon image = null;
+    if (subAppletImageName != null){
+      try {
+        image = new ImageIcon(new URL(subAppletImageName));
+        includeImage = true;
+      } catch (MalformedURLException ex) {
+        ex.printStackTrace();
+        // not blocking
+      }
+    }
+    if (includeImage){
+      add(loaderPanel, BorderLayout.SOUTH);
+      loaderPanel.add(new JLabel(image), BorderLayout.CENTER);
+      loaderPanel.add(progressBar, BorderLayout.SOUTH);
+    } else {
+      add(loaderPanel, BorderLayout.SOUTH);
+      loaderPanel.add(progressBar, BorderLayout.CENTER);
+    }
+  }
+
+
+  /** start asynchroneous loading of libraries if needed */
+  public void start(){
+    if (isInitOk){
+      if (firstStart) {
+        firstStart = false;
+        String userHome = System.getProperty("user.home");
+        String installDirName = userHome + File.separator + ".jogl_ext"
+          + File.separator + installDirectory + File.separator + Version.getVersion();
+
+        final File installDir = new File(installDirName);
+
+        Thread refresher = new Thread() {
+            public void run() {
+              refreshJOGL(installDir);
+            }
+          };
+        refresher.setPriority(Thread.NORM_PRIORITY - 1);
+        refresher.start();
+      } else if (joglStarted) {
+        // we have to start again the applet (start can be called multiple times,
+        // e.g once per tabbed browsing
+        subApplet.start();
+      }
+    }
+  }
+
+  public void stop(){
+    if (subApplet != null){
+      subApplet.stop();
+    }
+  }
+
+  public void destroy(){
+    if (subApplet != null){
+      subApplet.destroy();
+    }
+  }
+
+
+  private boolean checkOSAndArch(String osName, String osArch) {
+    for (int i = 0; i < allNativeLibInfo.length; i++) {
+      NativeLibInfo info = allNativeLibInfo[i];
+      if (info.matchesOSAndArch(osName, osArch)) {
+        nativeLibInfo = info;
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /** This method is executed from outside the Event Dispatch Thread, and installs
+   *  the required native libraries in the local folder.
+   */
+  private void refreshJOGL(final File installDir) {
+    try {
+      Class subAppletClass = Class.forName(subAppletClassName);
+      // this will block until the applet jar is downloaded
+    } catch (ClassNotFoundException cnfe){
+      displayError("Start failed : class not found : " + subAppletClassName);
+      return;
+    }
+
+    if (!installDir.exists()){
+      if (!installDir.mkdirs()) {
+        displayError("Unable to create directories for target: " + installDir);
+        return;
+      }
+    }
+
+    String nativeJarName = nativeLibInfo.getNativeJarName();
+
+    URL nativeLibURL;
+    URLConnection urlConnection;
+    String path = getCodeBase().toExternalForm() + nativeJarName;
+    try {
+      nativeLibURL = new URL(path);
+      urlConnection = nativeLibURL.openConnection();
+    } catch (Exception e){
+      e.printStackTrace();
+      displayError("Couldn't access the native lib URL : " + path);
+      return;
+    }
+
+    // the timestamp used to determine if we have to download the native jar again
+    // don't rely on the OS's timestamp to cache this
+    long lastModified = getTimestamp(installDir, urlConnection.getLastModified());
+    if (lastModified != urlConnection.getLastModified()) {
+      displayMessage("Updating local version of the native libraries");
+      // first download the full jar locally
+      File localJarFile = new File(installDir, nativeJarName);
+      try {
+        saveNativesJarLocally(localJarFile, urlConnection);
+      } catch (IOException ioe) {
+        ioe.printStackTrace();
+        displayError("Unable to install the native file locally");
+        return;
+      }
+
+      try {
+        JarFile jf = new JarFile(localJarFile);
+
+        // Iterate the entries finding all candidate libraries that need
+        // to have their signatures verified
+        if (!findNativeEntries(jf)) {
+          displayError("native libraries not found in jar file");
+          return;
+        }
+
+        byte[] buf = new byte[8192];
+
+        // Go back and verify the signatures
+        for (int i = 0; i < nativeLibNames.length; i++) {
+          JarEntry entry = jf.getJarEntry(nativeLibNames[i]);
+          if (entry == null) {
+            displayError("error looking up jar entry " + nativeLibNames[i]);
+            return;
+          }
+          if (!checkNativeCertificates(jf, entry, buf)) {
+            displayError("Native library " + nativeLibNames[i] + " isn't properly signed or has other errors");
+            return;
+          }
+        }
+
+        // Now install the native library files
+        progressBar.setValue(0);
+        for (int i = 0; i < nativeLibNames.length; i++) {
+          displayMessage("Installing native files");
+          if (!installFile(installDir, jf, nativeLibNames[i], buf)) {
+            return;
+          }
+          int percent = (100 * (i + 1) / nativeLibNames.length);
+          progressBar.setValue(percent);
+        }
+
+        // At this point we can delete the jar file we just downloaded
+        jf.close();
+        localJarFile.delete();
+
+        // If installation succeeded, write a timestamp for all of the
+        // files to be checked next time
+        try {
+          File timestampFile = new File(installDir, "timestamp");
+          timestampFile.delete();
+          BufferedWriter writer = new BufferedWriter(new FileWriter(timestampFile));
+          writer.write("" + urlConnection.getLastModified());
+          writer.flush();
+          writer.close();
+        } catch (Exception e) {
+          displayError("Error writing time stamp for native libraries");
+          return;
+        }
+
+      } catch (Exception e) {
+        displayError("Error opening jar file " + localJarFile.getName() + " for reading");
+        return;
+      }
+    }
+
+    loadNativesAndStart(installDir);
+  }
+  
+  public long getTimestamp(File installDir, long timestamp) {
+    // Avoid returning valid value if timestamp file doesn't exist
+    try {
+      BufferedReader reader = new BufferedReader(new FileReader(new File(installDir, "timestamp")));
+      try {
+        StreamTokenizer tokenizer = new StreamTokenizer(reader);
+        // Avoid screwing up by not being able to read full longs
+        tokenizer.resetSyntax();
+        tokenizer.wordChars('0', '9');
+        tokenizer.wordChars('-', '-');
+        tokenizer.nextToken();
+        String tok = tokenizer.sval;
+        if (tok != null) {
+          return Long.parseLong(tok);
+        }
+      } catch (Exception e) {
+      } finally {
+        reader.close();
+      }
+    } catch (Exception e) {
+    }
+    return ((timestamp == 0) ? 1 : 0);
+  }
+
+  private void saveNativesJarLocally(File localJarFile,
+                                     URLConnection urlConnection) throws IOException {
+    BufferedOutputStream out = null;;
+    InputStream in = null;
+    displayMessage("Downloading native library");
+    progressBar.setValue(0);
+    try {
+      out = new BufferedOutputStream(new
+                                     FileOutputStream(localJarFile));
+      int totalLength = urlConnection.getContentLength();
+      in = urlConnection.getInputStream();
+      byte[] buffer = new byte[1024];
+      int len;
+      int sum = 0;
+      while ( (len = in.read(buffer)) > 0) {
+        out.write(buffer, 0, len);
+        sum += len;
+        int percent = (100 * sum / totalLength);
+        progressBar.setValue(percent);
+      }
+      out.close();
+      in.close();
+    } finally {
+      // close the files
+      if (out != null) {
+        try {
+          out.close();
+        } catch (IOException ignore) {
+        }
+      }
+      if (in != null) {
+        try {
+          in.close();
+        } catch (IOException ignore) {
+        }
+      }
+    }
+  }
+
+  private boolean findNativeEntries(JarFile jf) {
+    List list = new ArrayList();
+    Enumeration e = jf.entries();
+    while (e.hasMoreElements()) {
+      JarEntry entry = (JarEntry) e.nextElement();
+      if (nativeLibInfo.matchesNativeLib(entry.getName())) {
+        list.add(entry.getName());
+      }
+    }
+    if (list.isEmpty()) {
+      return false;
+    }
+    nativeLibNames = (String[]) list.toArray(new String[0]);
+    return true;
+  }
+
+  /** checking the native certificates with the jogl ones (all must match)*/
+  private boolean checkNativeCertificates(JarFile jar, JarEntry entry, byte[] buf){
+    // API states that we must read all of the data from the entry's
+    // InputStream in order to be able to get its certificates
+    try {
+      InputStream is = jar.getInputStream(entry);
+      int totalLength = (int) entry.getSize();
+      int len;
+      while ((len = is.read(buf)) > 0) {
+      }
+      is.close();
+      Certificate[] nativeCerts = entry.getCertificates();
+      // locate the JOGL certificates
+      Certificate[] joglCerts = GLDrawableFactory.class.getProtectionDomain().
+        getCodeSource().getCertificates();
+
+      if (nativeCerts == null || nativeCerts.length == 0) {
+        return false;
+      }
+      int checked = 0;
+      for (int i = 0; i < joglCerts.length; i++) {
+        for (int j = 0; j < nativeCerts.length; j++) {
+          if (nativeCerts[j].equals(joglCerts[i])){
+            checked++;
+            break;
+          }
+        }
+      }
+      return  (checked == joglCerts.length);
+    } catch (Exception e) {
+      return false;
+    }
+  }
+
+  private boolean installFile(File installDir,
+                              JarFile jar,
+                              String fileName,
+                              byte[] buf) {
+    try {
+      JarEntry entry = jar.getJarEntry(fileName);
+      if (entry == null) {
+        displayError("Error finding native library " + fileName);
+        return false;
+      }
+      InputStream is = jar.getInputStream(entry);
+      int totalLength = (int) entry.getSize();
+      BufferedOutputStream out = null;
+      File outputFile = new File(installDir, fileName);
+      try {
+        out = new BufferedOutputStream(new FileOutputStream(outputFile));
+      } catch (Exception e) {
+        displayError("Error opening file " + fileName + " for writing");
+        return false;
+      }      
+      int len;
+      try {
+        while ( (len = is.read(buf)) > 0) {
+          out.write(buf, 0, len);
+        }
+      } catch (IOException ioe) {
+        displayError("Error writing file " + fileName + " to disk");
+        ioe.printStackTrace();
+        outputFile.delete();
+        return false;
+      }
+      out.flush();
+      out.close();
+      return true;
+    } catch (Exception e2) {
+      e2.printStackTrace();
+      displayError("Error writing file " + fileName + " to disk");
+      return false;
+    }
+  }
+
+  /** last step before launch : System.load() the natives and init()/start() the child applet  */
+  private void loadNativesAndStart(final File nativeLibDir) {
+    // back to the EDT
+    SwingUtilities.invokeLater(new Runnable() {
+        public void run() {
+          displayMessage("Loading native libraries");
+
+          // Load core JOGL native library
+          loadLibrary(nativeLibDir, "jogl");
+
+          if (!nativeLibInfo.isMacOS()) { // borrowed from NativeLibLoader
+            // Must pre-load JAWT on all non-Mac platforms to
+            // ensure references from jogl_awt shared object
+            // will succeed since JAWT shared object isn't in
+            // default library path
+            try {
+              System.loadLibrary("jawt");
+            } catch (UnsatisfiedLinkError ex) {
+              // Accessibility technologies load JAWT themselves; safe to continue
+              // as long as JAWT is loaded by any loader
+              if (ex.getMessage().indexOf("already loaded") == -1) {
+                displayError("Unable to load JAWT");
+                throw ex;
+              }
+            }
+          }
+
+          // Load AWT-specific native code
+          loadLibrary(nativeLibDir, "jogl_awt");
+
+          // disable JOGL loading from elsewhere
+          com.sun.opengl.impl.NativeLibLoader.disableLoading();
+
+          displayMessage("Starting applet " + subAppletDisplayName);
+
+          // start the subapplet
+          startSubApplet();
+        }
+      });
+  }
+
+  private void loadLibrary(File installDir, String libName) {
+    String nativeLibName = nativeLibInfo.getNativeLibName(libName);
+    try {
+      System.load(new File(installDir, nativeLibName).getPath());
+    } catch (UnsatisfiedLinkError ex) {
+      // should be safe to continue as long as the native is loaded by any loader
+      if (ex.getMessage().indexOf("already loaded") == -1) {
+        displayError("Unable to load " + nativeLibName);
+        throw ex;
+      }
+    }
+  }
+
+  /** The true start of the sub applet (invoked in the EDT) */
+  private void startSubApplet(){
+    try {
+      subApplet = (Applet)Class.forName(subAppletClassName).newInstance();
+      subApplet.setStub(new AppletStubProxy());
+    } catch (ClassNotFoundException cnfe) {
+      cnfe.printStackTrace();
+      displayError("Class not found (" + subAppletClassName + ")");
+      return;
+    } catch (Exception ex) {
+      ex.printStackTrace();
+      displayError("Unable to start " + subAppletDisplayName);
+      return;
+    }
+
+    add(subApplet, BorderLayout.CENTER);
+
+    try {
+      subApplet.init();
+      remove(loaderPanel);
+      validate();
+      subApplet.start();
+      joglStarted = true;
+    } catch (Exception ex){
+      ex.printStackTrace();
+    }
+
+  }
+
+  /** a proxy to allow the subApplet to work like a real applet */
+  class AppletStubProxy implements AppletStub {
+    public boolean isActive() {
+      return JOGLAppletLauncher.this.isActive();
+    }
+
+    public URL getDocumentBase() {
+      return JOGLAppletLauncher.this.getDocumentBase();
+    }
+
+    public URL getCodeBase() {
+      return JOGLAppletLauncher.this.getCodeBase();
+    }
+
+    public String getParameter(String name) {
+      return JOGLAppletLauncher.this.getParameter(name);
+    }
+
+    public AppletContext getAppletContext() {
+      return JOGLAppletLauncher.this.getAppletContext();
+    }
+
+    public void appletResize(int width, int height) {
+      JOGLAppletLauncher.this.resize(width, height);
+    }
+  }
+}
+