The Tor Browser: dom/events/TransitionEvent.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 /* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */

     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/TransitionEvent.h"

     7 #include "mozilla/ContentEvents.h"

     8 #include "prtime.h"

    10 namespace mozilla {

    11 namespace dom {

    13 TransitionEvent::TransitionEvent(EventTarget* aOwner,

    14                                  nsPresContext* aPresContext,

    15                                  InternalTransitionEvent* aEvent)

    16   : Event(aOwner, aPresContext,

    17           aEvent ? aEvent : new InternalTransitionEvent(false, 0))

    18 {

    19   if (aEvent) {

    20     mEventIsInternal = false;

    21   }

    22   else {

    23     mEventIsInternal = true;

    24     mEvent->time = PR_Now();

    25   }

    26 }

    28 NS_INTERFACE_MAP_BEGIN(TransitionEvent)

    29   NS_INTERFACE_MAP_ENTRY(nsIDOMTransitionEvent)

    30 NS_INTERFACE_MAP_END_INHERITING(Event)

    32 NS_IMPL_ADDREF_INHERITED(TransitionEvent, Event)

    33 NS_IMPL_RELEASE_INHERITED(TransitionEvent, Event)

    35 // static

    36 already_AddRefed<TransitionEvent>

    37 TransitionEvent::Constructor(const GlobalObject& aGlobal,

    38                              const nsAString& aType,

    39                              const TransitionEventInit& aParam,

    40                              ErrorResult& aRv)

    41 {

    42   nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());

    43   nsRefPtr<TransitionEvent> e = new TransitionEvent(t, nullptr, nullptr);

    44   bool trusted = e->Init(t);

    46   aRv = e->InitEvent(aType, aParam.mBubbles, aParam.mCancelable);

    48   InternalTransitionEvent* internalEvent = e->mEvent->AsTransitionEvent();

    49   internalEvent->propertyName = aParam.mPropertyName;

    50   internalEvent->elapsedTime = aParam.mElapsedTime;

    51   internalEvent->pseudoElement = aParam.mPseudoElement;

    53   e->SetTrusted(trusted);

    54   return e.forget();

    55 }

    57 NS_IMETHODIMP

    58 TransitionEvent::GetPropertyName(nsAString& aPropertyName)

    59 {

    60   aPropertyName = mEvent->AsTransitionEvent()->propertyName;

    61   return NS_OK;

    62 }

    64 NS_IMETHODIMP

    65 TransitionEvent::GetElapsedTime(float* aElapsedTime)

    66 {

    67   *aElapsedTime = ElapsedTime();

    68   return NS_OK;

    69 }

    71 float

    72 TransitionEvent::ElapsedTime()

    73 {

    74   return mEvent->AsTransitionEvent()->elapsedTime;

    75 }

    77 NS_IMETHODIMP

    78 TransitionEvent::GetPseudoElement(nsAString& aPseudoElement)

    79 {

    80   aPseudoElement = mEvent->AsTransitionEvent()->pseudoElement;

    81   return NS_OK;

    82 }

    84 } // namespace dom

    85 } // namespace mozilla

    87 using namespace mozilla;

    88 using namespace mozilla::dom;

    90 nsresult

    91 NS_NewDOMTransitionEvent(nsIDOMEvent** aInstancePtrResult,

    92                          EventTarget* aOwner,

    93                          nsPresContext* aPresContext,

    94                          InternalTransitionEvent* aEvent)

    95 {

    96   TransitionEvent *it = new TransitionEvent(aOwner, aPresContext, aEvent);

    97   NS_ADDREF(it);

    98   *aInstancePtrResult = static_cast<Event*>(it);

    99   return NS_OK;

   100 }

The Tor Browser / file revision

dom/events/TransitionEvent.cpp@97036ab72558

dom/events/TransitionEvent.cpp