| /* EmbeddedWindow.java -- |
| Copyright (C) 2003, 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 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.awt; |
| |
| import gnu.java.awt.peer.EmbeddedWindowPeer; |
| import gnu.java.security.action.SetAccessibleAction; |
| |
| import java.awt.Component; |
| import java.awt.Frame; |
| import java.awt.Toolkit; |
| import java.lang.reflect.Field; |
| import java.security.AccessController; |
| |
| /** |
| * Represents an AWT window that can be embedded into another |
| * application. |
| * |
| * @author Michael Koch (konqueror@gmx.de) |
| */ |
| public class EmbeddedWindow extends Frame |
| { |
| private long handle; |
| |
| /** |
| * Creates a window to be embedded into another application. The |
| * window will only be embedded after its setHandle method has been |
| * called. |
| */ |
| public EmbeddedWindow () |
| { |
| super(); |
| this.handle = 0; |
| } |
| |
| /** |
| * Creates a window to be embedded into another application. |
| * |
| * @param handle the native handle to the screen area where the AWT |
| * window should be embedded |
| */ |
| public EmbeddedWindow (long handle) |
| { |
| super(); |
| this.handle = handle; |
| } |
| |
| /** |
| * Creates the native peer for this embedded window. |
| */ |
| public void addNotify() |
| { |
| Toolkit tk = getToolkit(); |
| |
| if (! (tk instanceof EmbeddedWindowSupport)) |
| throw new UnsupportedOperationException |
| ("Embedded windows are not supported by the current peers: " |
| + tk.getClass()); |
| |
| // Circumvent the package-privateness of the AWT internal |
| // java.awt.Component.peer member variable. |
| try |
| { |
| Field peerField = Component.class.getDeclaredField("peer"); |
| AccessController.doPrivileged(new SetAccessibleAction(peerField)); |
| peerField.set(this, ((EmbeddedWindowSupport) tk).createEmbeddedWindow (this)); |
| } |
| catch (IllegalAccessException e) |
| { |
| // This should never happen. |
| } |
| catch (NoSuchFieldException e) |
| { |
| // This should never happen. |
| } |
| |
| super.addNotify(); |
| } |
| |
| /** |
| * If the native peer for this embedded window has been created, |
| * then setHandle will embed the window. If not, setHandle tells |
| * us where to embed ourselves when our peer is created. |
| * |
| * @param handle the native handle to the screen area where the AWT |
| * window should be embedded |
| */ |
| public void setHandle(long handle) |
| { |
| if (this.handle != 0) |
| throw new RuntimeException ("EmbeddedWindow is already embedded"); |
| |
| this.handle = handle; |
| if (getPeer() != null) |
| ((EmbeddedWindowPeer) getPeer()).embed (this.handle); |
| } |
| |
| /** |
| * Gets the native handle of the screen area where the window will |
| * be embedded. |
| * |
| * @return The native handle that was passed to the constructor. |
| */ |
| public long getHandle() |
| { |
| return handle; |
| } |
| } |