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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/beans/DummyAppletContext.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/beans/DummyAppletContext.java')
-rw-r--r-- | libjava/classpath/gnu/java/beans/DummyAppletContext.java | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/beans/DummyAppletContext.java b/libjava/classpath/gnu/java/beans/DummyAppletContext.java new file mode 100644 index 000000000..583d2f5cb --- /dev/null +++ b/libjava/classpath/gnu/java/beans/DummyAppletContext.java @@ -0,0 +1,165 @@ +/* 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(); + } +} |