The Tor Browser: accessible/src/atk/nsMaiInterfaceHypertext.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: set ts=2 et sw=2 tw=80: */

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

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

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

     7 #include "InterfaceInitFuncs.h"

     9 #include "Accessible-inl.h"

    10 #include "HyperTextAccessible.h"

    11 #include "nsMai.h"

    12 #include "nsMaiHyperlink.h"

    13 #include "mozilla/Likely.h"

    15 using namespace mozilla::a11y;

    17 extern "C" {

    19 static AtkHyperlink*

    20 getLinkCB(AtkHypertext *aText, gint aLinkIndex)

    21 {

    22   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));

    23   if (!accWrap)

    24     return nullptr;

    26   HyperTextAccessible* hyperText = accWrap->AsHyperText();

    27   NS_ENSURE_TRUE(hyperText, nullptr);

    29   Accessible* hyperLink = hyperText->LinkAt(aLinkIndex);

    30   if (!hyperLink)

    31     return nullptr;

    33   AtkObject* hyperLinkAtkObj = AccessibleWrap::GetAtkObject(hyperLink);

    34   AccessibleWrap* accChild = GetAccessibleWrap(hyperLinkAtkObj);

    35   NS_ENSURE_TRUE(accChild, nullptr);

    37   MaiHyperlink *maiHyperlink = accChild->GetMaiHyperlink();

    38   NS_ENSURE_TRUE(maiHyperlink, nullptr);

    39   return maiHyperlink->GetAtkHyperlink();

    40 }

    42 static gint

    43 getLinkCountCB(AtkHypertext *aText)

    44 {

    45   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));

    46   if (!accWrap)

    47     return -1;

    49   HyperTextAccessible* hyperText = accWrap->AsHyperText();

    50   NS_ENSURE_TRUE(hyperText, -1);

    52   return hyperText->LinkCount();

    53 }

    55 static gint

    56 getLinkIndexCB(AtkHypertext *aText, gint aCharIndex)

    57 {

    58   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aText));

    59   if (!accWrap)

    60     return -1;

    62   HyperTextAccessible* hyperText = accWrap->AsHyperText();

    63   NS_ENSURE_TRUE(hyperText, -1);

    65   return hyperText->LinkIndexAtOffset(aCharIndex);

    66 }

    67 }

    69 void

    70 hypertextInterfaceInitCB(AtkHypertextIface* aIface)

    71 {

    72   NS_ASSERTION(aIface, "no interface!");

    73   if (MOZ_UNLIKELY(!aIface))

    74     return;

    76   aIface->get_link = getLinkCB;

    77   aIface->get_n_links = getLinkCountCB;

    78   aIface->get_link_index = getLinkIndexCB;

    79 }

The Tor Browser / file revision

accessible/src/atk/nsMaiInterfaceHypertext.cpp@97036ab72558

accessible/src/atk/nsMaiInterfaceHypertext.cpp