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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/applet/AppletContext.java
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+/* AppletContext.java -- access the applet's runtime environment
+ Copyright (C) 1999, 2002, 2004 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 java.applet;
+
+import java.awt.Image;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.Enumeration;
+import java.util.Iterator;
+
+/**
+ * This interface allows an applet access to the browser to retrieve
+ * additional data files and display documents. It also allows the
+ * applet to find out other applets in the same document.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ * @since 1.0
+ * @status updated to 1.5
+ */
+public interface AppletContext
+{
+ /**
+ * Returns an audio clip from the specified URL.
+ *
+ * @param url the URL of the audio clip
+ * @return the retrieved audio clip
+ * @throws NullPointerException if url is null
+ */
+ AudioClip getAudioClip(URL url);
+
+ /**
+ * Returns an image from the specified URL. Note that the image is not
+ * actually retrieved until the applet attempts to display it, so this
+ * method returns immediately.
+ *
+ * @param url the absolute URL of the image
+ * @return the retrieved image
+ * @throws NullPointerException if url is null
+ */
+ Image getImage(URL url);
+
+ /**
+ * Returns the applet in the document for this object that has the
+ * specified name.
+ *
+ * @param name the applet name
+ * @return the requested applet, or <code>null</code> if not found
+ */
+ Applet getApplet(String name);
+
+ /**
+ * Returns a list of all the applets in the document for this object.
+ *
+ * @return a list of all the applets
+ */
+ Enumeration<Applet> getApplets();
+
+ /**
+ * Displays the web page pointed to by the specified URL in the window
+ * for this object. This page replaces the document that is currently
+ * there.
+ *
+ * @param url the URL of the web page to load; unspecified on an error
+ */
+ void showDocument(URL url);
+
+ /**
+ * Displays the web page pointed to be the sepcified URL in the window
+ * with the specified name. The standard names "_top", "_blank",
+ * "_parent", and "_self" are allowed. An applet viewer may disregard
+ * this request.
+ *
+ * @param url the URL of the web page to load
+ * @param target the target window
+ */
+ void showDocument(URL url, String target);
+
+ /**
+ * Displays the specified message in the status window if that window
+ * exists.
+ *
+ * @param message the status message, may be null
+ */
+ void showStatus(String message);
+
+ /**
+ * Associate a stream to a key for this applet context, possibly replacing
+ * the old value. Stream associations are local to the applet context, for
+ * security purposes.
+ *
+ * @param key the key to associate with
+ * @param stream the stream value to tie to the key, or null to remove
+ * @throws IOException if the stream is too large
+ * @since 1.4
+ */
+ void setStream(String key, InputStream stream) throws IOException;
+
+ /**
+ * Return the stream associated with a given key in this applet context, or
+ * null if nothing is associated. Stream associations are local to the
+ * applet context, for security purposes.
+ *
+ * @param key the key to look up
+ * @return the associated stream, or null
+ * @since 1.4
+ */
+ InputStream getStream(String key);
+
+ /**
+ * Iterate over all keys that have associated streams. Stream associated
+ * are local to the applet context, for security purposes.
+ *
+ * @return an iterator over the association keys
+ * @since 1.4
+ */
+ Iterator<String> getStreamKeys();
+} // interface AppletContext