The Tor Browser: dom/events/EventTarget.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/EventListenerManager.h"

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

     8 #include "nsThreadUtils.h"

    10 namespace mozilla {

    11 namespace dom {

    13 void

    14 EventTarget::RemoveEventListener(const nsAString& aType,

    15                                  EventListener* aListener,

    16                                  bool aUseCapture,

    17                                  ErrorResult& aRv)

    18 {

    19   EventListenerManager* elm = GetExistingListenerManager();

    20   if (elm) {

    21     elm->RemoveEventListener(aType, aListener, aUseCapture);

    22   }

    23 }

    25 EventHandlerNonNull*

    26 EventTarget::GetEventHandler(nsIAtom* aType, const nsAString& aTypeString)

    27 {

    28   EventListenerManager* elm = GetExistingListenerManager();

    29   return elm ? elm->GetEventHandler(aType, aTypeString) : nullptr;

    30 }

    32 void

    33 EventTarget::SetEventHandler(const nsAString& aType,

    34                              EventHandlerNonNull* aHandler,

    35                              ErrorResult& aRv)

    36 {

    37   if (!StringBeginsWith(aType, NS_LITERAL_STRING("on"))) {

    38     aRv.Throw(NS_ERROR_INVALID_ARG);

    39     return;

    40   }

    41   if (NS_IsMainThread()) {

    42     nsCOMPtr<nsIAtom> type = do_GetAtom(aType);

    43     SetEventHandler(type, EmptyString(), aHandler);

    44     return;

    45   }

    46   SetEventHandler(nullptr,

    47                   Substring(aType, 2), // Remove "on"

    48                   aHandler);

    49 }

    51 void

    52 EventTarget::SetEventHandler(nsIAtom* aType, const nsAString& aTypeString,

    53                              EventHandlerNonNull* aHandler)

    54 {

    55   GetOrCreateListenerManager()->SetEventHandler(aType, aTypeString, aHandler);

    56 }

    58 } // namespace dom

    59 } // namespace mozilla

The Tor Browser / file revision

dom/events/EventTarget.cpp@97036ab72558

dom/events/EventTarget.cpp