1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25   @test
  26   @bug 4682039
  27   @summary Tests that DataTransferer.getFormatsForFlavors() does not throw
  28            NullPointerException if some of given as parameter data flavors
  29            are null.
  30   @author gas@sparc.spb.su area=datatransfer
  31   @run main NullDataFlavorTest
  32 */
  33 
  34 import java.awt.*;
  35 import java.awt.datatransfer.Clipboard;
  36 import java.awt.datatransfer.DataFlavor;
  37 import java.awt.datatransfer.Transferable;
  38 import java.awt.datatransfer.UnsupportedFlavorException;
  39 
  40 public class NullDataFlavorTest {
  41 
  42     private final static Clipboard clipboard =
  43         Toolkit.getDefaultToolkit().getSystemClipboard();
  44 
  45     public static void main(String[] args) throws Exception {
  46         boolean failed = false;
  47 
  48         try {
  49             clipboard.setContents(new NullSelection("DATA1",
  50                 new DataFlavor[] { null, null, null }), null);
  51             clipboard.setContents(new NullSelection("DATA2",
  52                 new DataFlavor[] { null, DataFlavor.stringFlavor, null }), null);
  53             clipboard.setContents(new NullSelection("DATA3", null), null);
  54         } catch (NullPointerException e) {
  55             failed = true;
  56             e.printStackTrace();
  57         } catch (Throwable e) {
  58             e.printStackTrace();
  59         }
  60 
  61         if (failed) {
  62             throw new RuntimeException("test failed: NullPointerException " +
  63             "has been thrown");
  64         } else {
  65             System.err.println("test passed");
  66         }
  67     }
  68 }
  69 
  70 class NullSelection implements Transferable {
  71 
  72     private final DataFlavor[] flavors;
  73 
  74     private final String data;
  75 
  76     public NullSelection(String data, DataFlavor[] flavors) {
  77         this.data = data;
  78         this.flavors = flavors;
  79     }
  80 
  81     @Override
  82     public DataFlavor[] getTransferDataFlavors() {
  83         return flavors;
  84     }
  85 
  86     @Override
  87     public boolean isDataFlavorSupported(DataFlavor flavor) {
  88         for (DataFlavor fl : flavors) {
  89             if (flavor.equals(fl)) {
  90                 return true;
  91             }
  92         }
  93         return false;
  94     }
  95 
  96     @Override
  97     public Object getTransferData(DataFlavor flavor)
  98         throws UnsupportedFlavorException, java.io.IOException
  99     {
 100         for (DataFlavor fl : flavors) {
 101             if (flavor.equals(fl)) {
 102                 return data;
 103             }
 104         }
 105         throw new UnsupportedFlavorException(flavor);
 106     }
 107 
 108 }