widget/src/android/nsClipboard.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is Mozilla Android code.
  15  *
  16  * The Initial Developer of the Original Code is Mozilla Foundation.
  17  * Portions created by the Initial Developer are Copyright (C) 2010
  18  * the Initial Developer. All Rights Reserved.
  19  *
  20  * Contributor(s):
  21  *   Brad Lassey <blassey@mozilla.com>
  22  *
  23  * Alternatively, the contents of this file may be used under the terms of
  24  * either the GNU General Public License Version 2 or later (the "GPL"), or
  25  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  26  * in which case the provisions of the GPL or the LGPL are applicable instead
  27  * of those above. If you wish to allow use of your version of this file only
  28  * under the terms of either the GPL or the LGPL, and not to allow others to
  29  * use your version of this file under the terms of the MPL, indicate your
  30  * decision by deleting the provisions above and replace them with the notice
  31  * and other provisions required by the GPL or the LGPL. If you do not delete
  32  * the provisions above, a recipient may use your version of this file under
  33  * the terms of any one of the MPL, the GPL or the LGPL.
  34  *
  35  * ***** END LICENSE BLOCK ***** */
  36
  37 #include "nsClipboard.h"
  38 #include "nsISupportsPrimitives.h"
  39 #include "AndroidBridge.h"
  40 #include "nsCOMPtr.h"
  41 #include "nsComponentManagerUtils.h"
  42
  43 using namespace mozilla;
  44
  45 NS_IMPL_ISUPPORTS1(nsClipboard, nsIClipboard)
  46
  47 /* The Android clipboard only supports text and doesn't support mime types
  48  * so we assume all clipboard data is text/unicode for now. Documentation
  49  * indicates that support for other data types is planned for future
  50  * releases.
  51  */
  52
  53 nsClipboard::nsClipboard()
  54 {
  55 }
  56
  57 NS_IMETHODIMP
  58 nsClipboard::SetData(nsITransferable *aTransferable,
  59                      nsIClipboardOwner *anOwner, PRInt32 aWhichClipboard)
  60 {
  61   if (aWhichClipboard != kGlobalClipboard)
  62     return NS_ERROR_NOT_IMPLEMENTED;
  63   if (!AndroidBridge::Bridge())
  64     return NS_ERROR_NOT_IMPLEMENTED;
  65
  66   nsCOMPtr<nsISupports> tmp;
  67   PRUint32 len;
  68   nsresult rv  = aTransferable->GetTransferData(kUnicodeMime, getter_AddRefs(tmp),
  69                                                 &len);
  70   NS_ENSURE_SUCCESS(rv, rv);
  71   nsCOMPtr<nsISupportsString> supportsString = do_QueryInterface(tmp);
  72   // No support for non-text data
  73   NS_ENSURE_TRUE(supportsString, NS_ERROR_NOT_IMPLEMENTED);
  74   nsAutoString buffer;
  75   supportsString->GetData(buffer);
  76   AndroidBridge::Bridge()->SetClipboardText(buffer);
  77   return NS_OK;
  78 }
  79
  80 NS_IMETHODIMP
  81 nsClipboard::GetData(nsITransferable *aTransferable, PRInt32 aWhichClipboard)
  82 {
  83   if (aWhichClipboard != kGlobalClipboard)
  84     return NS_ERROR_NOT_IMPLEMENTED;
  85   if (!AndroidBridge::Bridge())
  86     return NS_ERROR_NOT_IMPLEMENTED;
  87
  88   nsAutoString buffer;
  89   if (!AndroidBridge::Bridge()->GetClipboardText(buffer))
  90     return NS_ERROR_UNEXPECTED;
  91
  92   nsresult rv;
  93   nsCOMPtr<nsISupportsString> dataWrapper =
  94     do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
  95   NS_ENSURE_SUCCESS(rv, rv);
  96
  97   rv = dataWrapper->SetData(buffer);
  98   NS_ENSURE_SUCCESS(rv, rv);
  99
 100   // If our data flavor has already been added, this will fail. But we don't care
 101   aTransferable->AddDataFlavor(kUnicodeMime);
 102
 103   nsCOMPtr<nsISupports> nsisupportsDataWrapper =
 104     do_QueryInterface(dataWrapper);
 105   rv = aTransferable->SetTransferData(kUnicodeMime, nsisupportsDataWrapper,
 106                                       buffer.Length() * sizeof(PRUnichar));
 107   NS_ENSURE_SUCCESS(rv, rv);
 108
 109   return NS_OK;
 110 }
 111
 112 NS_IMETHODIMP
 113 nsClipboard::EmptyClipboard(PRInt32 aWhichClipboard)
 114 {
 115   if (aWhichClipboard != kGlobalClipboard)
 116     return NS_ERROR_NOT_IMPLEMENTED;
 117   if (AndroidBridge::Bridge())
 118     AndroidBridge::Bridge()->EmptyClipboard();
 119   return NS_OK;
 120 }
 121
 122 NS_IMETHODIMP
 123 nsClipboard::HasDataMatchingFlavors(const char **aFlavorList,
 124                                     PRUint32 aLength, PRInt32 aWhichClipboard,
 125                                     PRBool *aHasText NS_OUTPARAM)
 126 {
 127   *aHasText = PR_FALSE;
 128   if (aWhichClipboard != kGlobalClipboard)
 129     return NS_ERROR_NOT_IMPLEMENTED;
 130   if (AndroidBridge::Bridge())
 131     *aHasText = AndroidBridge::Bridge()->ClipboardHasText();
 132   return NS_OK;
 133 }
 134
 135 NS_IMETHODIMP
 136 nsClipboard::SupportsSelectionClipboard(PRBool *aIsSupported NS_OUTPARAM)
 137 {
 138   *aIsSupported = PR_FALSE;
 139   return NS_OK;
 140 }
 141