1 /*
   2  * Copyright (c) 2011, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.lwawt.macosx;
  27 
  28 import java.awt.*;
  29 import java.awt.datatransfer.*;
  30 import java.io.IOException;
  31 import java.io.NotSerializableException;
  32 import java.util.*;
  33 
  34 import sun.awt.datatransfer.*;
  35 
  36 
  37 /**
  38 * A class which interfaces with Cocoa's pasteboard in order to support
  39  * data transfer via Clipboard operations. Most of the work is provided by
  40  * sun.awt.datatransfer.DataTransferer.
  41  */
  42 
  43 final class CClipboard extends SunClipboard {
  44 
  45     public CClipboard(String name) {
  46         super(name);
  47     }
  48 
  49     @Override
  50     public long getID() {
  51         return 0;
  52     }
  53 
  54     @Override
  55     protected void clearNativeContext() {
  56         // Leaving Empty, as WClipboard.clearNativeContext is empty as well.
  57     }
  58 
  59     @Override
  60     protected void setContentsNative(Transferable contents) {
  61         FlavorTable flavorMap = getDefaultFlavorTable();
  62         // Don't use delayed Clipboard rendering for the Transferable's data.
  63         // If we did that, we would call Transferable.getTransferData on
  64         // the Toolkit thread, which is a security hole.
  65         //
  66         // Get all of the target formats into which the Transferable can be
  67         // translated. Then, for each format, translate the data and post
  68         // it to the Clipboard.
  69         DataTransferer dataTransferer = DataTransferer.getInstance();
  70         long[] formatArray = dataTransferer.getFormatsForTransferableAsArray(contents, flavorMap);
  71         declareTypes(formatArray, this);
  72 
  73         Map<Long, DataFlavor> formatMap = dataTransferer.getFormatsForTransferable(contents, flavorMap);
  74         for (Map.Entry<Long, DataFlavor> entry : formatMap.entrySet()) {
  75             long format = entry.getKey();
  76             DataFlavor flavor = entry.getValue();
  77 
  78             try {
  79                 byte[] bytes = DataTransferer.getInstance().translateTransferable(contents, flavor, format);
  80                 setData(bytes, format);
  81             } catch (IOException e) {
  82                 // Fix 4696186: don't print exception if data with
  83                 // javaJVMLocalObjectMimeType failed to serialize.
  84                 // May remove this if-check when 5078787 is fixed.
  85                 if (!(flavor.isMimeTypeEqual(DataFlavor.javaJVMLocalObjectMimeType) &&
  86                         e instanceof NotSerializableException)) {
  87                     e.printStackTrace();
  88                 }
  89             }
  90         }
  91 
  92         notifyChanged();
  93     }
  94 
  95     @Override
  96     protected native long[] getClipboardFormats();
  97     @Override
  98     protected native byte[] getClipboardData(long format) throws IOException;
  99 
 100     // 1.5 peer method
 101     @Override
 102     protected void unregisterClipboardViewerChecked() {
 103         // no-op because we lack OS support. This requires 4048791, which requires 4048792
 104     }
 105 
 106     // 1.5 peer method
 107     @Override
 108     protected void registerClipboardViewerChecked()    {
 109         // no-op because we lack OS support. This requires 4048791, which requires 4048792
 110     }
 111 
 112     // 1.5 peer method
 113     // no-op. This appears to be win32 specific. Filed 4048790 for investigation
 114     //protected Transferable createLocaleTransferable(long[] formats) throws IOException;
 115 
 116     private native void declareTypes(long[] formats, SunClipboard newOwner);
 117     private native void setData(byte[] data, long format);
 118 
 119     /**
 120      * Invokes native check whether a change count on the general pasteboard is different
 121      * than when we set it. The different count value means the current owner lost
 122      * pasteboard ownership and someone else put data on the clipboard.
 123      * @since 1.7
 124      */
 125     native void checkPasteboard();
 126 
 127     /*** Native Callbacks ***/
 128     private void notifyLostOwnership() {
 129         lostOwnershipImpl();
 130     }
 131 
 132     private static void notifyChanged() {
 133         CClipboard clipboard = (CClipboard) Toolkit.getDefaultToolkit().getSystemClipboard();
 134         if (!clipboard.areFlavorListenersRegistered()) {
 135             return;
 136         }
 137         clipboard.checkChange(clipboard.getClipboardFormats());
 138     }
 139 }