dom/apps/InterAppComm.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "InterAppComm.h"
   6 #include "nsContentUtils.h"
   7 #include "nsPIDOMWindow.h"
   8 #include "nsJSPrincipals.h"
   9 #include "mozilla/Preferences.h"
  10 #include "AccessCheck.h"
  11
  12 using namespace mozilla::dom;
  13
  14 /* static */ bool
  15 InterAppComm::EnabledForScope(JSContext* /* unused */,
  16                               JS::Handle<JSObject*> /* unused */)
  17 {
  18   // Disable the constructors if they're disabled by the preference for sure.
  19   if (!Preferences::GetBool("dom.inter-app-communication-api.enabled", false)) {
  20         return false;
  21   }
  22
  23   // Only expose the constructors to the chrome codes for Gecko internal uses.
  24   // The content pages shouldn't be aware of the constructors.
  25   return nsContentUtils::ThreadsafeIsCallerChrome();
  26 }