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+// Copyright (C) 2001-2003 Jon A. Maxwell (JAM)
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+package net.sourceforge.jnlp.runtime;
+
+import java.applet.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.util.*;
+import java.util.List;
+import java.lang.reflect.InvocationTargetException;
+import java.net.*;
+import java.io.*;
+import javax.swing.*;
+
+import net.sourceforge.jnlp.*;
+import net.sourceforge.jnlp.util.*;
+
+/**
+ * The applet environment including stub, context, and frame. The
+ * default environment puts the applet in a non-resiable frame;
+ * this can be changed by obtaining the frame and setting it
+ * resizable.
+ *
+ * @author <a href="mailto:[email protected]">Jon A. Maxwell (JAM)</a> - initial author
+ * @version $Revision: 1.12 $
+ */
+public class AppletEnvironment implements AppletContext, AppletStub {
+
+ /** the JNLP file */
+ private JNLPFile file;
+
+ /** the applet instance */
+ private AppletInstance appletInstance;
+
+ /** the applet */
+ private Applet applet;
+
+ /** the parameters */
+ private Map parameters;
+
+ /** the applet container */
+ private Container cont;
+
+ /** weak references to the audio clips */
+ private WeakList weakClips = new WeakList();
+
+ /** whether the applet has been started / displayed */
+ private boolean appletStarted = false;
+
+ /** whether the applet has been destroyed */
+ private boolean destroyed = false;
+
+
+ /**
+ * Create a new applet environment for the applet specified by
+ * the JNLP file.
+ */
+ public AppletEnvironment(JNLPFile file, final AppletInstance appletInstance, Container cont) {
+ this.file = file;
+ this.appletInstance = appletInstance;
+ this.applet = appletInstance.getApplet();
+
+ parameters = file.getApplet().getParameters();
+ this.cont = cont;
+ }
+
+ /**
+ * Create a new applet environment for the applet specified by
+ * the JNLP file, in a new frame.
+ */
+ public AppletEnvironment(JNLPFile file, final AppletInstance appletInstance) {
+ this(file, appletInstance, null);
+
+ Frame frame = new Frame(file.getApplet().getName() + " - Applet");
+ frame.setResizable(false);
+
+ appletInstance.addWindow(frame);
+ // may not need this once security manager can close windows
+ // that do not have app code on the stack
+ WindowListener closer = new WindowAdapter() {
+ public void windowClosing(WindowEvent event) {
+ appletInstance.destroy();
+ System.exit(0);
+ }
+ };
+ frame.addWindowListener(closer);
+ this.cont = frame;
+ }
+
+ /**
+ * Checks whether the applet has been destroyed, and throws an
+ * IllegalStateException if the applet has been destroyed of.
+ *
+ * @throws IllegalStateException
+ */
+ private void checkDestroyed() {
+ if (destroyed)
+ throw new IllegalStateException("Illegal applet stub/context access: applet destroyed.");
+ }
+
+ /**
+ * Disposes the applet's resources and disables the applet
+ * environment from further use; after calling this method the
+ * applet stub and context methods throw IllegalStateExceptions.
+ */
+ public void destroy() {
+ destroyed = true;
+
+ List clips = weakClips.hardList();
+ for (int i = 0; i < clips.size(); i++) {
+ ((AppletAudioClip)clips.get(i)).dispose();
+ }
+ }
+
+ /**
+ * Returns the frame that contains the applet. Disposing this
+ * frame will destroy the applet.
+ */
+ public Container getAppletFrame() {
+ // TODO: rename this method to getAppletContainer ?
+ return cont;
+ }
+
+ /**
+ * Initialize, start, and show the applet.
+ */
+ public void startApplet() {
+ checkDestroyed();
+
+ if (appletStarted)
+ return;
+
+ appletStarted = true;
+
+ try {
+ AppletDesc appletDesc = file.getApplet();
+
+ if (cont instanceof AppletStub)
+ applet.setStub((AppletStub)cont);
+ else
+ applet.setStub(this);
+
+ cont.setLayout(new BorderLayout());
+ cont.add("Center", applet);
+ cont.validate();
+
+ // This is only needed if the applet is in its own frame.
+ if (cont instanceof Frame) {
+ Frame frame = (Frame) cont;
+ frame.pack(); // cause insets to be calculated
+
+ Insets insets = frame.getInsets();
+ frame.setSize(appletDesc.getWidth() + insets.left + insets.right,
+ appletDesc.getHeight() + insets.top + insets.bottom);
+ }
+
+ try {
+ SwingUtilities.invokeAndWait(new Runnable() {
+ public void run() {
+ // do first because some applets need to be displayed before
+ // starting (they use Component.getImage or something)
+ cont.setVisible(true);
+
+ applet.init();
+ applet.start();
+
+ cont.invalidate(); // this should force the applet to
+ cont.validate(); // the correct size and to repaint
+ cont.repaint();
+ }
+ });
+ } catch (InterruptedException ie) {
+
+ } catch (InvocationTargetException ite) {
+
+ }
+ }
+ catch (Exception ex) {
+ if (JNLPRuntime.isDebug())
+ ex.printStackTrace();
+
+ // should also kill the applet?
+ }
+ }
+
+ // applet context methods
+
+ /**
+ * Returns the applet if the applet's name is specified,
+ * otherwise return null.
+ */
+ public Applet getApplet(String name) {
+ checkDestroyed();
+
+ if (name != null && name.equals(file.getApplet().getName()))
+ return applet;
+ else
+ return null;
+ }
+
+ /**
+ * Returns an enumeration that contains only the applet
+ * from the JNLP file.
+ */
+ public Enumeration getApplets() {
+ checkDestroyed();
+
+ return Collections.enumeration( Arrays.asList(new Applet[] { applet }) );
+ }
+
+ /**
+ * Returns an audio clip.
+ */
+ public AudioClip getAudioClip(URL location) {
+ checkDestroyed();
+
+ AppletAudioClip clip = new AppletAudioClip(location);
+
+ weakClips.add(clip);
+ weakClips.trimToSize();
+
+ return clip;
+ }
+
+ /**
+ * Return an image loaded from the specified location.
+ */
+ public Image getImage(URL location) {
+ checkDestroyed();
+
+ //return Toolkit.getDefaultToolkit().createImage(location);
+ Image image = (new ImageIcon(location)).getImage();
+
+ return image;
+ }
+
+ /**
+ * Not implemented yet.
+ */
+ public void showDocument(java.net.URL uRL) {
+ checkDestroyed();
+
+ }
+
+ /**
+ * Not implemented yet.
+ */
+ public void showDocument(java.net.URL uRL, java.lang.String str) {
+ checkDestroyed();
+
+ }
+
+ /**
+ * Not implemented yet.
+ */
+ public void showStatus(java.lang.String str) {
+ checkDestroyed();
+
+ }
+
+ /**
+ * Required for JRE1.4, but not implemented yet.
+ */
+ public void setStream(String key, InputStream stream) {
+ checkDestroyed();
+
+ }
+
+ /**
+ * Required for JRE1.4, but not implemented yet.
+ */
+ public InputStream getStream(String key) {
+ checkDestroyed();
+
+ return null;
+ }
+
+ /**
+ * Required for JRE1.4, but not implemented yet.
+ */
+ public Iterator getStreamKeys() {
+ checkDestroyed();
+
+ return null;
+ }
+
+ // stub methods
+
+ public void appletResize(int width, int height) {
+ checkDestroyed();
+
+ if (cont instanceof Frame) {
+ Frame frame = (Frame) cont;
+ Insets insets = frame.getInsets();
+
+ frame.setSize(width + insets.left + insets.right,
+ height + insets.top + insets.bottom);
+ }
+ }
+
+ public AppletContext getAppletContext() {
+ checkDestroyed();
+
+ return this;
+ }
+
+ public URL getCodeBase() {
+ checkDestroyed();
+
+ return file.getCodeBase();
+ }
+
+ public URL getDocumentBase() {
+ checkDestroyed();
+
+ return file.getApplet().getDocumentBase();
+ }
+
+ // FIXME: Sun's applet code forces all parameters to lower case.
+ // Does Netx's JNLP code do the same, so we can remove the first lookup?
+ public String getParameter(String name) {
+ checkDestroyed();
+
+ String s = (String) parameters.get(name);
+ if (s != null)
+ return s;
+
+ return (String) parameters.get(name.toLowerCase());
+ }
+
+ public boolean isActive() {
+ checkDestroyed();
+
+ // it won't be started or stopped, so if it can call it's running
+ return true;
+ }
+
+
+}