The Tor Browser: widget/xpwidgets/nsBaseClipboard.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "nsBaseClipboard.h"

     8 #include "nsIClipboardOwner.h"

     9 #include "nsCOMPtr.h"

    10 #include "nsXPCOM.h"

    11 #include "nsISupportsPrimitives.h"

    13 nsBaseClipboard::nsBaseClipboard()

    14 {

    15   mClipboardOwner          = nullptr;

    16   mTransferable            = nullptr;

    17   mIgnoreEmptyNotification = false;

    18   mEmptyingForSetData      = false;

    19 }

    21 nsBaseClipboard::~nsBaseClipboard()

    22 {

    23   EmptyClipboard(kSelectionClipboard);

    24   EmptyClipboard(kGlobalClipboard);

    25   EmptyClipboard(kFindClipboard);

    26 }

    28 NS_IMPL_ISUPPORTS(nsBaseClipboard, nsIClipboard)

    30 /**

    31   * Sets the transferable object

    32   *

    33   */

    34 NS_IMETHODIMP nsBaseClipboard::SetData(nsITransferable * aTransferable, nsIClipboardOwner * anOwner,

    35                                         int32_t aWhichClipboard)

    36 {

    37   NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );

    39   if (aTransferable == mTransferable && anOwner == mClipboardOwner)

    40     return NS_OK;

    41   bool selectClipPresent;

    42   SupportsSelectionClipboard(&selectClipPresent);

    43   bool findClipPresent;

    44   SupportsFindClipboard(&findClipPresent);

    45   if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )

    46     return NS_ERROR_FAILURE;

    48   mEmptyingForSetData = true;

    49   EmptyClipboard(aWhichClipboard);

    50   mEmptyingForSetData = false;

    52   mClipboardOwner = anOwner;

    53   if ( anOwner )

    54     NS_ADDREF(mClipboardOwner);

    56   mTransferable = aTransferable;

    58   nsresult rv = NS_ERROR_FAILURE;

    60   if ( mTransferable ) {

    61     NS_ADDREF(mTransferable);

    62     if (!mPrivacyHandler) {

    63       rv = NS_NewClipboardPrivacyHandler(getter_AddRefs(mPrivacyHandler));

    64       NS_ENSURE_SUCCESS(rv, rv);

    65     }

    66     rv = mPrivacyHandler->PrepareDataForClipboard(mTransferable);

    67     NS_ENSURE_SUCCESS(rv, rv);

    68     rv = SetNativeClipboardData(aWhichClipboard);

    69   }

    71   return rv;

    72 }

    74 /**

    75   * Gets the transferable object

    76   *

    77   */

    78 NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable * aTransferable, int32_t aWhichClipboard)

    79 {

    80   NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );

    82   bool selectClipPresent;

    83   SupportsSelectionClipboard(&selectClipPresent);

    84   bool findClipPresent;

    85   SupportsFindClipboard(&findClipPresent);

    86   if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )

    87     return NS_ERROR_FAILURE;

    89   if ( aTransferable )

    90     return GetNativeClipboardData(aTransferable, aWhichClipboard);

    92   return NS_ERROR_FAILURE;

    93 }

    95 NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t aWhichClipboard)

    96 {

    97   bool selectClipPresent;

    98   SupportsSelectionClipboard(&selectClipPresent);

    99   bool findClipPresent;

   100   SupportsFindClipboard(&findClipPresent);

   101   if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )

   102     return NS_ERROR_FAILURE;

   104   if (mIgnoreEmptyNotification)

   105     return NS_OK;

   107   if ( mClipboardOwner ) {

   108     mClipboardOwner->LosingOwnership(mTransferable);

   109     NS_RELEASE(mClipboardOwner);

   110   }

   112   NS_IF_RELEASE(mTransferable);

   114   return NS_OK;

   115 }

   117 NS_IMETHODIMP

   118 nsBaseClipboard::HasDataMatchingFlavors(const char** aFlavorList,

   119                                         uint32_t aLength,

   120                                         int32_t aWhichClipboard,

   121                                         bool* outResult)

   122 {

   123   *outResult = true;  // say we always do.

   124   return NS_OK;

   125 }

   127 NS_IMETHODIMP

   128 nsBaseClipboard::SupportsSelectionClipboard(bool* _retval)

   129 {

   130   *_retval = false;   // we don't support the selection clipboard by default.

   131   return NS_OK;

   132 }

   134 NS_IMETHODIMP

   135 nsBaseClipboard::SupportsFindClipboard(bool* _retval)

   136 {

   137   *_retval = false;   // we don't support the find clipboard by default.

   138   return NS_OK;

   139 }

The Tor Browser / file revision