The Tor Browser: content/media/TextTrackCueList.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 "mozilla/dom/TextTrackCueList.h"

     7 #include "mozilla/dom/TextTrackCueListBinding.h"

     8 #include "mozilla/dom/TextTrackCue.h"

    10 namespace mozilla {

    11 namespace dom {

    13 class CompareCuesByTime

    14 {

    15 public:

    16   bool Equals(TextTrackCue* aOne, TextTrackCue* aTwo) const {

    17     return aOne->StartTime() == aTwo->StartTime() &&

    18            aOne->EndTime() == aTwo->EndTime();

    19   }

    20   bool LessThan(TextTrackCue* aOne, TextTrackCue* aTwo) const {

    21     return aOne->StartTime() < aTwo->StartTime() ||

    22            (aOne->StartTime() == aTwo->StartTime() &&

    23             aOne->EndTime() < aTwo->EndTime());

    24   }

    25 };

    27 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_2(TextTrackCueList, mParent, mList)

    29 NS_IMPL_CYCLE_COLLECTING_ADDREF(TextTrackCueList)

    30 NS_IMPL_CYCLE_COLLECTING_RELEASE(TextTrackCueList)

    31 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TextTrackCueList)

    32   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY

    33   NS_INTERFACE_MAP_ENTRY(nsISupports)

    34 NS_INTERFACE_MAP_END

    36 TextTrackCueList::TextTrackCueList(nsISupports* aParent) : mParent(aParent)

    37 {

    38   SetIsDOMBinding();

    39 }

    41 JSObject*

    42 TextTrackCueList::WrapObject(JSContext* aCx)

    43 {

    44   return TextTrackCueListBinding::Wrap(aCx, this);

    45 }

    47 TextTrackCue*

    48 TextTrackCueList::IndexedGetter(uint32_t aIndex, bool& aFound)

    49 {

    50   aFound = aIndex < mList.Length();

    51   return aFound ? mList[aIndex] : nullptr;

    52 }

    54 TextTrackCue*

    55 TextTrackCueList::operator[](uint32_t aIndex)

    56 {

    57   return mList.SafeElementAt(aIndex, nullptr);

    58 }

    60 TextTrackCue*

    61 TextTrackCueList::GetCueById(const nsAString& aId)

    62 {

    63   if (aId.IsEmpty()) {

    64     return nullptr;

    65   }

    67   for (uint32_t i = 0; i < mList.Length(); i++) {

    68     if (aId.Equals(mList[i]->Id())) {

    69       return mList[i];

    70     }

    71   }

    72   return nullptr;

    73 }

    75 void

    76 TextTrackCueList::AddCue(TextTrackCue& aCue)

    77 {

    78   if (mList.Contains(&aCue)) {

    79     return;

    80   }

    81   mList.InsertElementSorted(&aCue, CompareCuesByTime());

    82 }

    84 void

    85 TextTrackCueList::RemoveCue(TextTrackCue& aCue, ErrorResult& aRv)

    86 {

    87   if (!mList.Contains(&aCue)) {

    88     aRv.Throw(NS_ERROR_DOM_NOT_FOUND_ERR);

    89     return;

    90   }

    91   mList.RemoveElement(&aCue);

    92 }

    94 void

    95 TextTrackCueList::RemoveCueAt(uint32_t aIndex)

    96 {

    97   if (aIndex < mList.Length()) {

    98     mList.RemoveElementAt(aIndex);

    99   }

   100 }

   102 void

   103 TextTrackCueList::RemoveAll()

   104 {

   105   mList.Clear();

   106 }

   108 void

   109 TextTrackCueList::GetArray(nsTArray<nsRefPtr<TextTrackCue> >& aCues)

   110 {

   111   aCues = nsTArray<nsRefPtr<TextTrackCue> >(mList);

   112 }

   115 } // namespace dom

   116 } // namespace mozilla

The Tor Browser / file revision

content/media/TextTrackCueList.cpp@97036ab72558

content/media/TextTrackCueList.cpp