LCOV - code coverage report
Current view: directory - widget/xpwidgets - nsClipboardHelper.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 38 0 0.0 %
Date: 2012-06-02 Functions: 8 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  *
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is the Mozilla browser.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  * Netscape Communications Corp.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 2001
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsClipboardHelper.h"
      40                 : 
      41                 : // basics
      42                 : #include "nsCOMPtr.h"
      43                 : #include "nsXPCOM.h"
      44                 : #include "nsISupportsPrimitives.h"
      45                 : #include "nsIServiceManager.h"
      46                 : 
      47                 : // helpers
      48                 : #include "nsIClipboard.h"
      49                 : #include "nsITransferable.h"
      50                 : #include "nsReadableUtils.h"
      51                 : 
      52               0 : NS_IMPL_ISUPPORTS1(nsClipboardHelper, nsIClipboardHelper)
      53                 : 
      54                 : /*****************************************************************************
      55                 :  * nsClipboardHelper ctor / dtor
      56                 :  *****************************************************************************/
      57                 : 
      58               0 : nsClipboardHelper::nsClipboardHelper()
      59                 : {
      60               0 : }
      61                 : 
      62               0 : nsClipboardHelper::~nsClipboardHelper()
      63                 : {
      64                 :   // no members, nothing to destroy
      65               0 : }
      66                 : 
      67                 : /*****************************************************************************
      68                 :  * nsIClipboardHelper methods
      69                 :  *****************************************************************************/
      70                 : 
      71                 : NS_IMETHODIMP
      72               0 : nsClipboardHelper::CopyStringToClipboard(const nsAString& aString,
      73                 :                                          PRInt32 aClipboardID)
      74                 : {
      75                 :   nsresult rv;
      76                 : 
      77                 :   // get the clipboard
      78                 :   nsCOMPtr<nsIClipboard>
      79               0 :     clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv));
      80               0 :   NS_ENSURE_SUCCESS(rv, rv);
      81               0 :   NS_ENSURE_TRUE(clipboard, NS_ERROR_FAILURE);
      82                 : 
      83                 :   // don't go any further if they're asking for the selection
      84                 :   // clipboard on a platform which doesn't support it (i.e., unix)
      85               0 :   if (nsIClipboard::kSelectionClipboard == aClipboardID) {
      86                 :     bool clipboardSupported;
      87               0 :     rv = clipboard->SupportsSelectionClipboard(&clipboardSupported);
      88               0 :     NS_ENSURE_SUCCESS(rv, rv);
      89               0 :     if (!clipboardSupported)
      90               0 :       return NS_ERROR_FAILURE;
      91                 :   }
      92                 : 
      93                 :   // create a transferable for putting data on the clipboard
      94                 :   nsCOMPtr<nsITransferable>
      95               0 :     trans(do_CreateInstance("@mozilla.org/widget/transferable;1", &rv));
      96               0 :   NS_ENSURE_SUCCESS(rv, rv);
      97               0 :   NS_ENSURE_TRUE(trans, NS_ERROR_FAILURE);
      98                 : 
      99                 :   // Add the text data flavor to the transferable
     100               0 :   rv = trans->AddDataFlavor(kUnicodeMime);
     101               0 :   NS_ENSURE_SUCCESS(rv, rv);
     102                 : 
     103                 :   // get wStrings to hold clip data
     104                 :   nsCOMPtr<nsISupportsString>
     105               0 :     data(do_CreateInstance("@mozilla.org/supports-string;1", &rv));
     106               0 :   NS_ENSURE_SUCCESS(rv, rv);
     107               0 :   NS_ENSURE_TRUE(data, NS_ERROR_FAILURE);
     108                 : 
     109                 :   // populate the string
     110               0 :   rv = data->SetData(aString);
     111               0 :   NS_ENSURE_SUCCESS(rv, rv);
     112                 : 
     113                 :   // qi the data object an |nsISupports| so that when the transferable holds
     114                 :   // onto it, it will addref the correct interface.
     115               0 :   nsCOMPtr<nsISupports> genericData(do_QueryInterface(data, &rv));
     116               0 :   NS_ENSURE_SUCCESS(rv, rv);
     117               0 :   NS_ENSURE_TRUE(genericData, NS_ERROR_FAILURE);
     118                 : 
     119                 :   // set the transfer data
     120               0 :   rv = trans->SetTransferData(kUnicodeMime, genericData,
     121               0 :                               aString.Length() * 2);
     122               0 :   NS_ENSURE_SUCCESS(rv, rv);
     123                 : 
     124                 :   // put the transferable on the clipboard
     125               0 :   rv = clipboard->SetData(trans, nsnull, aClipboardID);
     126               0 :   NS_ENSURE_SUCCESS(rv, rv);
     127                 : 
     128               0 :   return NS_OK;
     129                 : }
     130                 : 
     131                 : NS_IMETHODIMP
     132               0 : nsClipboardHelper::CopyString(const nsAString& aString)
     133                 : {
     134                 :   nsresult rv;
     135                 : 
     136                 :   // copy to the global clipboard. it's bad if this fails in any way.
     137               0 :   rv = CopyStringToClipboard(aString, nsIClipboard::kGlobalClipboard);
     138               0 :   NS_ENSURE_SUCCESS(rv, rv);
     139                 : 
     140                 :   // unix also needs us to copy to the selection clipboard. this will
     141                 :   // fail in CopyStringToClipboard if we're not on a platform that
     142                 :   // supports the selection clipboard. (this could have been #ifdef
     143                 :   // XP_UNIX, but using the SupportsSelectionClipboard call is the
     144                 :   // more correct thing to do.
     145                 :   //
     146                 :   // if this fails in any way other than "not being unix", we'll get
     147                 :   // the assertion we need in CopyStringToClipboard, and we needn't
     148                 :   // assert again here.
     149               0 :   CopyStringToClipboard(aString, nsIClipboard::kSelectionClipboard);
     150                 : 
     151               0 :   return NS_OK;
     152                 : }

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