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package com.eteks.sweethome3d.applet;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.AccessControlException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.awt.*;
import javax.swing.*;
import javax.swing.JApplet;
import javax.swing.JLabel;
import com.eteks.sweethome3d.tools.ExtensionsClassLoader;
public class SweetHome3DApplet extends JApplet {
private static final long serialVersionUID = 1L;
private Object appletApplication;
@Override
public void start() {
// TODO Auto-generated method stub
super.start();
}
@Override
public void stop() {
// TODO Auto-generated method stub
super.stop();
}
@Override
public void init() {
System.out.println("simo init");
if (!isJava5OrSuperior()) {
showError("<html><p>This applet may be run under Windows, Mac OS X 10.4 / 10.5, Linux and Solaris." +
"<br>It requires Java version 5 or superior.</p>" +
"<p>Please, check Java version set in Java preferences under Mac OS X," +
"<br>or update your Java Runtime to the latest version available at java.com under the other systems.</p>");
} else {
createAppletApplication();
}
}
public void destroy() {
if (this.appletApplication != null) {
try {
Method destroyMethod = this.appletApplication.getClass().getMethod("destroy", new Class [0]);
destroyMethod.invoke(this.appletApplication, new Object [0]);
} catch (Exception ex) {
// Can't do better than print stack trace when applet is destroyed
ex.printStackTrace();
}
}
this.appletApplication = null;
// Collect deleted objects (seems to be required under Mac OS X when the applet is being reloaded)
System.gc();
}
/**
* Returns <code>true</code> if one of the homes edited by this applet is modified.
*/
public boolean isModified() {
if (this.appletApplication != null) {
try {
Method destroyMethod = this.appletApplication.getClass().getMethod("isModified", new Class [0]);
return ((Boolean)destroyMethod.invoke(this.appletApplication, new Object [0])).booleanValue();
} catch (Exception ex) {
// Can't do better than print stack trace
ex.printStackTrace();
}
}
return false;
}
/**
* Returns <code>true</code> if current JVM version is 5+.
*/
private boolean isJava5OrSuperior() {
String javaVersion = System.getProperty("java.version");
String [] javaVersionParts = javaVersion.split("\\.|_");
if (javaVersionParts.length >= 1) {
try {
// Return true for Java SE 5 and superior
if (Integer.parseInt(javaVersionParts [1]) >= 5) {
return true;
}
} catch (NumberFormatException ex) {
}
}
return false;
}
/**
* Shows the given text in a label.
*/
private void showError(String text) {
JLabel label = new JLabel(text, JLabel.CENTER);
setContentPane(label);
}
/**
* Creates a new <code>AppletApplication</code> instance that manages this applet content.
*/
private void createAppletApplication() {
System.out.println("simo createAppletApplication");
try {
Class sweetHome3DAppletClass = SweetHome3DApplet.class;
List java3DFiles = new ArrayList(Arrays.asList(new String [] {
"j3dcore.jar", // Main Java 3D jars
"vecmath.jar",
"j3dutils.jar",
"windows/j3dcore-d3d.dll", // Windows DLLs
"windows/j3dcore-ogl.dll",
"windows/j3dcore-ogl-cg.dll",
"windows/j3dcore-ogl-chk.dll",
"macosx/gluegen-rt.jar", // Mac OS X jars and DLLs
"macosx/jogl.jar",
"macosx/libgluegen-rt.jnilib",
"macosx/libjogl.jnilib",
"macosx/libjogl_awt.jnilib",
"macosx/libjogl_cg.jnilib"}));
if (System.getProperty("os.name").startsWith("Linux")
&& "64".equals(System.getProperty("sun.arch.data.model"))) {
java3DFiles.add("linux/x64/libj3dcore-ogl.so"); // Linux DLLs
} else {
java3DFiles.add("linux/i386/libj3dcore-ogl.so");
java3DFiles.add("linux/i386/libj3dcore-ogl-cg.so");
}
List applicationPackages = new ArrayList(Arrays.asList(new String [] {
"com.eteks.sweethome3d",
"javax.media",
"javax.vecmath",
"com.sun.j3d",
"com.sun.opengl",
"com.sun.gluegen.runtime",
"javax.media.opengl",
"com.sun.media",
"com.ibm.media",
"jmpapps.util",
"com.microcrowd.loader.java3d",
"org.sunflow"}));
applicationPackages.addAll(getPluginsPackages());
String applicationClassName = getApplicationClassName();
if (!applicationClassName.startsWith((String)applicationPackages.get(0))) {
String [] applicationClassParts = applicationClassName.split("\\.");
String applicationClassPackageBase = "";
// Contains the two first part of class package at most
for (int i = 0, n = Math.min(applicationClassParts.length - 1, 2); i < n; i++) {
if (i > 0) {
applicationClassPackageBase += ".";
}
applicationClassPackageBase += applicationClassParts [i];
}
applicationPackages.add(applicationClassPackageBase);
}
ClassLoader extensionsClassLoader = new ExtensionsClassLoader(
sweetHome3DAppletClass.getClassLoader(), sweetHome3DAppletClass.getProtectionDomain(),
(String [])java3DFiles.toArray(new String [java3DFiles.size()]),
(String [])applicationPackages.toArray(new String [applicationPackages.size()]));
// Call application constructor with reflection
Class applicationClass = extensionsClassLoader.loadClass(applicationClassName);
Constructor applicationConstructor =
applicationClass.getConstructor(new Class [] {JApplet.class});
this.appletApplication = applicationConstructor.newInstance(new Object [] {this});
} catch (Throwable ex) {
if (ex instanceof InvocationTargetException) {
ex = ((InvocationTargetException)ex).getCause();
}
if (ex instanceof AccessControlException) {
showError("<html>If you want to run this applet, you must relaunch your browser,"
+ "<br>display this page again and accept the displayed digital signature.");
} else {
showError("<html>Can't start applet:<br>Exception"
+ ex.getClass().getName() + " " + ex.getMessage());
ex.printStackTrace();
}
}
}
/**
* Returns the name of the {@linkplain AppletApplication application} class associated to this applet.
* This class must have a constructor taking in parameter a <code>JApplet</code>.
*/
protected String getApplicationClassName() {
return "com.eteks.sweethome3d.applet.AppletApplication";
}
/**
* Returns the collection of packages that are found in plugins.
*/
private Collection getPluginsPackages() {
System.out.println("simo get pluginsPackages");
String pluginURLs = getParameter("pluginURLs");
if (pluginURLs != null) {
Set pluginPackages = new HashSet();
// Add to pluginPackages all the packages contained in the plugin URLs
String [] urlStrings = pluginURLs.split("\\s|,");
for (int i = 0; i < urlStrings.length; i++) {
try {
URL pluginUrl = new URL(getCodeBase(), urlStrings [i]);
ZipInputStream zipIn = null;
try {
// Open a zip input from pluginUrl
zipIn = new ZipInputStream(pluginUrl.openStream());
// Try directories in current zip stream
for (ZipEntry entry; (entry = zipIn.getNextEntry()) != null; ) {
String zipEntryName = entry.getName();
int lastIndex = zipEntryName.lastIndexOf('/');
if (zipEntryName.endsWith(".class")) {
if (lastIndex == -1) {
pluginPackages.add(""); // Add empty package
} else {
pluginPackages.add(zipEntryName.substring(0, lastIndex).replace('/', '.'));
}
}
}
} catch (IOException ex) {
// Ignore furniture plugin
} finally {
if (zipIn != null) {
try {
zipIn.close();
} catch (IOException ex) {
}
}
}
} catch (MalformedURLException ex) {
// Ignore malformed URLs
}
}
return pluginPackages;
}
return Collections.EMPTY_SET;
}
} |
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