mirror of git://gcc.gnu.org/git/gcc.git
139 lines
4.1 KiB
Java
139 lines
4.1 KiB
Java
/* EmbeddedWindow.java --
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Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.awt;
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import gnu.java.awt.peer.EmbeddedWindowPeer;
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import gnu.java.security.action.SetAccessibleAction;
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import java.awt.Component;
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import java.awt.Frame;
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import java.lang.reflect.Field;
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import java.security.AccessController;
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/**
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* Represents an AWT window that can be embedded into another
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* application.
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*
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* @author Michael Koch (konqueror@gmx.de)
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*/
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public class EmbeddedWindow extends Frame
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{
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private long handle;
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/**
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* Creates a window to be embedded into another application. The
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* window will only be embedded after its setHandle method has been
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* called.
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*/
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public EmbeddedWindow ()
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{
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super();
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this.handle = 0;
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}
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/**
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* Creates a window to be embedded into another application.
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*
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* @param handle the native handle to the screen area where the AWT
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* window should be embedded
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*/
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public EmbeddedWindow (long handle)
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{
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super();
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this.handle = handle;
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}
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/**
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* Creates the native peer for this embedded window.
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*/
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public void addNotify()
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{
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// Assume we're using ClasspathToolkit
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ClasspathToolkit tk = (ClasspathToolkit) getToolkit();
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// Circumvent the package-privateness of the AWT internal
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// java.awt.Component.peer member variable.
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try
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{
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Field peerField = Component.class.getDeclaredField("peer");
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AccessController.doPrivileged(new SetAccessibleAction(peerField));
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peerField.set(this, tk.createEmbeddedWindow (this));
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}
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catch (IllegalAccessException e)
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{
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throw new AssertionError (e);
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}
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catch (NoSuchFieldException e)
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{
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throw new AssertionError (e);
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}
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super.addNotify();
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}
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/**
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* If the native peer for this embedded window has been created,
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* then setHandle will embed the window. If not, setHandle tells
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* us where to embed ourselves when our peer is created.
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*
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* @param handle the native handle to the screen area where the AWT
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* window should be embedded
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*/
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public void setHandle(long handle)
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{
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if (this.handle != 0)
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throw new RuntimeException ("EmbeddedWindow is already embedded");
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this.handle = handle;
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if (getPeer() != null)
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((EmbeddedWindowPeer) getPeer()).embed (this.handle);
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}
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/**
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* Gets the native handle of the screen area where the window will
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* be embedded.
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*
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* @return The native handle that was passed to the constructor.
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*/
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public long getHandle()
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{
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return handle;
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}
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}
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