| /* |
| * 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)); |
| } |
| } |