michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "InterAppComm.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "nsPIDOMWindow.h"
michael@0: #include "nsJSPrincipals.h"
michael@0: #include "mozilla/Preferences.h"
michael@0: #include "AccessCheck.h"
michael@0: 
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: /* static */ bool
michael@0: InterAppComm::EnabledForScope(JSContext* /* unused */,
michael@0: 			      JS::Handle<JSObject*> /* unused */)
michael@0: {
michael@0:   // Disable the constructors if they're disabled by the preference for sure.
michael@0:   if (!Preferences::GetBool("dom.inter-app-communication-api.enabled", false)) {
michael@0:   	return false;
michael@0:   }
michael@0: 
michael@0:   // Only expose the constructors to the chrome codes for Gecko internal uses.
michael@0:   // The content pages shouldn't be aware of the constructors.
michael@0:   return nsContentUtils::ThreadsafeIsCallerChrome();
michael@0: }