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-/* gnu.java.beans.DummyAppletContext
- Copyright (C) 2004, 2005 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package gnu.java.beans;
-
-import java.applet.Applet;
-import java.applet.AppletContext;
-import java.applet.AudioClip;
-import java.awt.Image;
-import java.awt.Toolkit;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URL;
-import java.util.Collections;
-import java.util.Enumeration;
-import java.util.Iterator;
-
-/** A placeholder <code>AppletContext</code> implementation that does nothing.
- *
- * <p>This is the default implementation for GNU Classpath and is used for <code>Applet</code>
- * beans being created with {@link java.beans.Beans.instantiate}.</p>
- *
- * <p>It has no functionality in order to allow it to be used without any dependencies
- * (e.g. sound, network access, ...).</p>
- *
- * @author Robert Schuster
- */
-class DummyAppletContext implements AppletContext
-{
- private static final Enumeration EMPTY_ENUMERATION = Collections.enumeration(Collections.EMPTY_SET);
-
- DummyAppletContext()
- {
- }
-
- /** Implementation is VM neutral and returns a dummy {@link AudioClip} instance
- * for every URL that returns a non-<code>null</code> object on
- * <code>URL.openConnection()</code>.
- *
- * @see java.applet.AppletContext#getAudioClip(java.net.URL)
- *
- * FIXME: When Java Sound API (javax.sound) is included in Classpath or URL is able to handle
- * sampled sound this should be adjusted.
- */
- public AudioClip getAudioClip(URL url)
- {
- return Applet.newAudioClip(url);
- }
-
- /** Loads the <code>Image</code> instance by delegating to
- * {@link java.awt.Toolkit.createImage(URL) }.
- *
- * @see java.applet.AppletContext#getImage(java.net.URL)
- * @see java.awt.Toolkit#createImage(java.net.URL)
- */
- public Image getImage(URL url)
- {
- return Toolkit.getDefaultToolkit().createImage(url);
- }
-
- /** Returns <code>null</code> for every argument.
- *
- * @see java.applet.AppletContext#getApplet(java.lang.String)
- */
- public Applet getApplet(String name)
- {
- return null;
- }
-
- /** Returns always an empty <code>Enumeration</code>.
- *
- * @see java.applet.AppletContext#getApplets()
- */
- public Enumeration getApplets()
- {
- return EMPTY_ENUMERATION;
- }
-
- /** Does nothing.
- *
- * @see java.applet.AppletContext#showDocument(java.net.URL)
- */
- public void showDocument(URL url)
- {
- }
-
- /** Does nothing.
- *
- * @see java.applet.AppletContext#showDocument(java.net.URL, java.lang.String)
- */
- public void showDocument(URL url, String target)
- {
- }
-
- /** Does nothing.
- *
- * @see java.applet.AppletContext#showStatus(java.lang.String)
- */
- public void showStatus(String message)
- {
- }
-
- /** Does nothing.
- *
- * @see java.applet.AppletContext#setStream(java.lang.String, java.io.InputStream)
- */
- public void setStream(String key, InputStream stream)
- throws IOException
- {
- throw new IOException("Dummy implementation imposes zero InputStream associations.");
- }
-
- /** Returns <code>null</code> for every argument.
- *
- * @see java.applet.AppletContext#getStream(java.lang.String)
- */
- public InputStream getStream(String key)
- {
- return null;
- }
-
- /** Returns always an empty iterator.
- *
- * @see java.applet.AppletContext#getStreamKeys()
- */
- public Iterator getStreamKeys()
- {
- return Collections.EMPTY_SET.iterator();
- }
-}