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/*
* Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.dnd.*;
import java.io.IOException;
import java.security.Permission;
import java.security.AccessControlException;
class DragInterceptorFrame extends Frame implements DropTargetListener {
private static int exitMessage = InterprocessMessages.TEST_PASSED;
private static boolean dataIsAccessible = false;
private static boolean exceptionHasBeenThrown = false;
DragInterceptorFrame(Point location) {
System.setSecurityManager(new ClipboardDefender());
initGUI(location);
setDropTarget(new DropTarget(this, DnDConstants.ACTION_COPY,
this));
}
private void initGUI(Point location) {
this.setLocation(location);
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
DragInterceptorFrame.this.dispose();
}
});
setSize (200, 200);
this.setVisible(true);
}
public void dragEnter(DropTargetDragEvent dtde) {
// We want to set the exception handler on EDT
Thread.currentThread().setUncaughtExceptionHandler (
new Thread.UncaughtExceptionHandler() {
public void uncaughtException(Thread t, Throwable e) {
exceptionHasBeenThrown = true;
}
}
);
examineTransferable(dtde);
}
public void dragOver(DropTargetDragEvent dtde) {
examineTransferable(dtde);
}
public void dropActionChanged(DropTargetDragEvent dtde) {
examineTransferable(dtde);
}
public void dragExit(DropTargetEvent dte) {}
public void drop(DropTargetDropEvent dtde) {
if (dataIsAccessible && !exceptionHasBeenThrown) {
exitMessage = InterprocessMessages.DATA_WAS_INTERCEPTED_AND_EXCEPTION_HANDLER_WAS_NOT_TRIGGERED;
} else if (dataIsAccessible) {
exitMessage = InterprocessMessages.DATA_WAS_INTERCEPTED;
} else if (!exceptionHasBeenThrown) {
exitMessage = InterprocessMessages.EXCEPTION_HANDLER_WAS_NOT_TRIGGERED;
}
// This returns the diagnostic code from the child VM
System.exit(exitMessage);
}
Point getDropTargetPoint() {
return new Point((int)getLocationOnScreen().getX()+(getWidth()/2),
(int)getLocationOnScreen().getY()+(getHeight()/2));
}
private void examineTransferable(DropTargetDragEvent dtde) {
if (dtde.getCurrentDataFlavorsAsList().contains(DataFlavor.stringFlavor)) {
dtde.acceptDrag(DnDConstants.ACTION_COPY);
try{
if (null != dtde.getTransferable().getTransferData(DataFlavor.stringFlavor)) {
dataIsAccessible = true;
}
} catch (IOException e) {
e.printStackTrace();
exitMessage = InterprocessMessages.UNEXPECTED_IO_EXCEPTION;
} catch (UnsupportedFlavorException e) {
e.printStackTrace();
exitMessage = InterprocessMessages.UNEXPECTED_UNSUPPORTED_FLAVOR_EXCEPTION;
}
}
}
static class ClipboardDefender extends SecurityManager {
public void checkPermission(Permission p) {
if (p instanceof java.awt.AWTPermission &&
p.getName().equals("accessClipboard")) {
throw new AccessControlException("access denied ");
}
}
}
public static void main(String[] args) {
new DragInterceptorFrame(new Point(200,200));
}
}
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