The Tor Browser: accessible/src/windows/ia2/ia2AccessibleComponent.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 "ia2AccessibleComponent.h"

    10 #include "AccessibleComponent_i.c"

    12 #include "AccessibleWrap.h"

    13 #include "States.h"

    14 #include "IUnknownImpl.h"

    16 #include "nsIFrame.h"

    18 using namespace mozilla::a11y;

    20 // IUnknown

    22 STDMETHODIMP

    23 ia2AccessibleComponent::QueryInterface(REFIID iid, void** ppv)

    24 {

    25   if (!ppv)

    26     return E_INVALIDARG;

    28   *ppv = nullptr;

    30   if (IID_IAccessibleComponent == iid) {

    31     *ppv = static_cast<IAccessibleComponent*>(this);

    32     (reinterpret_cast<IUnknown*>(*ppv))->AddRef();

    33     return S_OK;

    34   }

    36   return E_NOINTERFACE;

    37 }

    39 // IAccessibleComponent

    41 STDMETHODIMP

    42 ia2AccessibleComponent::get_locationInParent(long* aX, long* aY)

    43 {

    44   A11Y_TRYBLOCK_BEGIN

    46   if (!aX || !aY)

    47     return E_INVALIDARG;

    49   *aX = 0;

    50   *aY = 0;

    52   AccessibleWrap* acc = static_cast<AccessibleWrap*>(this);

    53   if (acc->IsDefunct())

    54     return CO_E_OBJNOTCONNECTED;

    56   // If the object is not on any screen the returned position is (0,0).

    57   uint64_t state = acc->State();

    58   if (state & states::INVISIBLE)

    59     return S_OK;

    61   int32_t x = 0, y = 0, width = 0, height = 0;

    62   nsresult rv = acc->GetBounds(&x, &y, &width, &height);

    63   if (NS_FAILED(rv))

    64     return GetHRESULT(rv);

    66   Accessible* parentAcc = acc->Parent();

    68   // The coordinates of the returned position are relative to this object's

    69   // parent or relative to the screen on which this object is rendered if it

    70   // has no parent.

    71   if (!parentAcc) {

    72     *aX = x;

    73     *aY = y;

    74     return S_OK;

    75   }

    77   // The coordinates of the bounding box are given relative to the parent's

    78   // coordinate system.

    79   int32_t parentx = 0, parenty = 0;

    80   rv = acc->GetBounds(&parentx, &parenty, &width, &height);

    81   if (NS_FAILED(rv))

    82     return GetHRESULT(rv);

    84   *aX = x - parentx;

    85   *aY = y - parenty;

    86   return S_OK;

    88   A11Y_TRYBLOCK_END

    89 }

    91 STDMETHODIMP

    92 ia2AccessibleComponent::get_foreground(IA2Color* aForeground)

    93 {

    94   A11Y_TRYBLOCK_BEGIN

    96   if (!aForeground)

    97     return E_INVALIDARG;

    99   *aForeground = 0;

   101   AccessibleWrap* acc = static_cast<AccessibleWrap*>(this);

   102   if (acc->IsDefunct())

   103     return CO_E_OBJNOTCONNECTED;

   105   nsIFrame* frame = acc->GetFrame();

   106   if (frame)

   107     *aForeground = frame->StyleColor()->mColor;

   109   return S_OK;

   111   A11Y_TRYBLOCK_END

   112 }

   114 STDMETHODIMP

   115 ia2AccessibleComponent::get_background(IA2Color* aBackground)

   116 {

   117   A11Y_TRYBLOCK_BEGIN

   119   if (!aBackground)

   120     return E_INVALIDARG;

   122   *aBackground = 0;

   124   AccessibleWrap* acc = static_cast<AccessibleWrap*>(this);

   125   if (acc->IsDefunct())

   126     return CO_E_OBJNOTCONNECTED;

   128   nsIFrame* frame = acc->GetFrame();

   129   if (frame)

   130     *aBackground = frame->StyleBackground()->mBackgroundColor;

   132   return S_OK;

   134   A11Y_TRYBLOCK_END

   135 }

The Tor Browser / file revision

accessible/src/windows/ia2/ia2AccessibleComponent.cpp@97036ab72558

accessible/src/windows/ia2/ia2AccessibleComponent.cpp