The Tor Browser: accessible/src/windows/ia2/ia2AccessibleImage.cpp@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

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

     2 /* vim:expandtab:shiftwidth=2:tabstop=2:

     3  */

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

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

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

     8 #include "ia2AccessibleImage.h"

    10 #include "AccessibleImage_i.c"

    12 #include "ImageAccessibleWrap.h"

    13 #include "IUnknownImpl.h"

    14 #include "nsIAccessibleTypes.h"

    16 #include "nsString.h"

    17 #include "nsIURI.h"

    19 using namespace mozilla;

    20 using namespace mozilla::a11y;

    22 // IUnknown

    24 STDMETHODIMP

    25 ia2AccessibleImage::QueryInterface(REFIID iid, void** ppv)

    26 {

    27   if (!ppv)

    28     return E_INVALIDARG;

    30   *ppv = nullptr;

    32   if (IID_IAccessibleImage == iid) {

    33     *ppv = static_cast<IAccessibleImage*>(this);

    34     (static_cast<IUnknown*>(*ppv))->AddRef();

    35     return S_OK;

    36   }

    38   return E_NOINTERFACE;

    39 }

    41 // IAccessibleImage

    43 STDMETHODIMP

    44 ia2AccessibleImage::get_description(BSTR* aDescription)

    45 {

    46   A11Y_TRYBLOCK_BEGIN

    48   if (!aDescription)

    49     return E_INVALIDARG;

    51   *aDescription = nullptr;

    53   ImageAccessibleWrap* acc = static_cast<ImageAccessibleWrap*>(this);

    54   if (acc->IsDefunct())

    55     return CO_E_OBJNOTCONNECTED;

    57   nsAutoString description;

    58   nsresult rv = acc->GetName(description);

    59   if (NS_FAILED(rv))

    60     return GetHRESULT(rv);

    62   if (description.IsEmpty())

    63     return S_FALSE;

    65   *aDescription = ::SysAllocStringLen(description.get(), description.Length());

    66   return *aDescription ? S_OK : E_OUTOFMEMORY;

    68   A11Y_TRYBLOCK_END

    69 }

    71 STDMETHODIMP

    72 ia2AccessibleImage::get_imagePosition(enum IA2CoordinateType aCoordType,

    73                                       long* aX,

    74                                       long* aY)

    75 {

    76   A11Y_TRYBLOCK_BEGIN

    78   if (!aX || !aY)

    79     return E_INVALIDARG;

    81   *aX = 0;

    82   *aY = 0;

    84   ImageAccessibleWrap* imageAcc = static_cast<ImageAccessibleWrap*>(this);

    85   if (imageAcc->IsDefunct())

    86     return CO_E_OBJNOTCONNECTED;

    88   uint32_t geckoCoordType = (aCoordType == IA2_COORDTYPE_SCREEN_RELATIVE) ?

    89     nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE :

    90     nsIAccessibleCoordinateType::COORDTYPE_PARENT_RELATIVE;

    91   int32_t x = 0, y = 0;

    93   nsresult rv = imageAcc->GetImagePosition(geckoCoordType, &x, &y);

    94   if (NS_FAILED(rv))

    95     return GetHRESULT(rv);

    97   *aX = x;

    98   *aY = y;

    99   return S_OK;

   101   A11Y_TRYBLOCK_END

   102 }

   104 STDMETHODIMP

   105 ia2AccessibleImage::get_imageSize(long* aHeight, long* aWidth)

   106 {

   107   A11Y_TRYBLOCK_BEGIN

   109   if (!aHeight || !aWidth)

   110     return E_INVALIDARG;

   112   *aHeight = 0;

   113   *aWidth = 0;

   115   ImageAccessibleWrap* imageAcc = static_cast<ImageAccessibleWrap*>(this);

   116   if (imageAcc->IsDefunct())

   117     return CO_E_OBJNOTCONNECTED;

   119   int32_t width = 0, height = 0;

   120   nsresult rv = imageAcc->GetImageSize(&width, &height);

   121   if (NS_FAILED(rv))

   122     return GetHRESULT(rv);

   124   *aHeight = width;

   125   *aWidth = height;

   126   return S_OK;

   128   A11Y_TRYBLOCK_END

   129 }

The Tor Browser / file revision

accessible/src/windows/ia2/ia2AccessibleImage.cpp@97036ab72558

accessible/src/windows/ia2/ia2AccessibleImage.cpp