The Tor Browser: accessible/src/xpcom/nsAccessibleRelation.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 /* 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 "nsAccessibleRelation.h"

     8 #include "Relation.h"

     9 #include "Accessible.h"

    11 #include "nsArrayUtils.h"

    12 #include "nsComponentManagerUtils.h"

    14 using namespace mozilla::a11y;

    16 nsAccessibleRelation::nsAccessibleRelation(uint32_t aType,

    17                                            Relation* aRel) :

    18   mType(aType)

    19 {

    20   mTargets = do_CreateInstance(NS_ARRAY_CONTRACTID);

    21   nsIAccessible* targetAcc = nullptr;

    22   while ((targetAcc = aRel->Next()))

    23     mTargets->AppendElement(targetAcc, false);

    24 }

    26 // nsISupports

    27 NS_IMPL_ISUPPORTS(nsAccessibleRelation, nsIAccessibleRelation)

    29 // nsIAccessibleRelation

    30 NS_IMETHODIMP

    31 nsAccessibleRelation::GetRelationType(uint32_t *aType)

    32 {

    33   NS_ENSURE_ARG_POINTER(aType);

    34   *aType = mType;

    35   return NS_OK;

    36 }

    38 NS_IMETHODIMP

    39 nsAccessibleRelation::GetTargetsCount(uint32_t *aCount)

    40 {

    41   NS_ENSURE_ARG_POINTER(aCount);

    42   *aCount = 0;

    43   return mTargets->GetLength(aCount);

    44 }

    46 NS_IMETHODIMP

    47 nsAccessibleRelation::GetTarget(uint32_t aIndex, nsIAccessible **aTarget)

    48 {

    49   NS_ENSURE_ARG_POINTER(aTarget);

    50   nsresult rv = NS_OK;

    51   nsCOMPtr<nsIAccessible> target = do_QueryElementAt(mTargets, aIndex, &rv);

    52   target.forget(aTarget);

    53   return rv;

    54 }

    56 NS_IMETHODIMP

    57 nsAccessibleRelation::GetTargets(nsIArray **aTargets)

    58 {

    59   NS_ENSURE_ARG_POINTER(aTargets);

    60   NS_ADDREF(*aTargets = mTargets);

    61   return NS_OK;

    62 }

The Tor Browser / file revision

accessible/src/xpcom/nsAccessibleRelation.cpp@97036ab72558

accessible/src/xpcom/nsAccessibleRelation.cpp