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6678ca2e42
Differential Revision: https://phabricator.services.mozilla.com/D29427 --HG-- extra : moz-landing-system : lando
97 lines
No EOL
3 KiB
C++
97 lines
No EOL
3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/WindowGlobalActor.h"
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#include "mozJSComponentLoader.h"
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#include "mozilla/Logging.h"
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#include "mozilla/dom/JSWindowActorService.h"
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namespace mozilla {
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namespace dom {
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void WindowGlobalActor::ConstructActor(const nsAString& aName,
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JS::MutableHandleObject aActor,
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ErrorResult& aRv) {
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JSWindowActor::Type actorType = GetSide();
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MOZ_ASSERT_IF(actorType == JSWindowActor::Type::Parent,
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XRE_IsParentProcess());
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// Constructing an actor requires a running script, so push an AutoEntryScript
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// onto the stack.
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AutoEntryScript aes(xpc::PrivilegedJunkScope(),
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"WindowGlobalActor construction");
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JSContext* cx = aes.cx();
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RefPtr<JSWindowActorService> actorSvc = JSWindowActorService::GetSingleton();
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if (!actorSvc) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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RefPtr<JSWindowActorProtocol> proto = actorSvc->GetProtocol(aName);
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if (!proto) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return;
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}
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if (!proto->Matches(BrowsingContext(), GetDocumentURI(), GetRemoteType())) {
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aRv.Throw(NS_ERROR_NOT_AVAILABLE);
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return;
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}
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// Load the module using mozJSComponentLoader.
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RefPtr<mozJSComponentLoader> loader = mozJSComponentLoader::Get();
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MOZ_ASSERT(loader);
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JS::RootedObject global(cx);
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JS::RootedObject exports(cx);
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const JSWindowActorProtocol::Sided* side;
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if (actorType == JSWindowActor::Type::Parent) {
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side = &proto->Parent();
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} else {
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side = &proto->Child();
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}
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aRv = loader->Import(cx, side->mModuleURI, &global, &exports);
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if (aRv.Failed()) {
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return;
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}
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MOZ_ASSERT(exports, "null exports!");
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// Load the specific property from our module.
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JS::RootedValue ctor(cx);
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nsAutoString ctorName(aName);
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ctorName.Append(actorType == JSWindowActor::Type::Parent
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? NS_LITERAL_STRING("Parent")
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: NS_LITERAL_STRING("Child"));
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if (!JS_GetUCProperty(cx, exports, ctorName.get(), ctorName.Length(),
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&ctor)) {
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aRv.NoteJSContextException(cx);
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return;
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}
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// Invoke the constructor loaded from the module.
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if (!JS::Construct(cx, ctor, JS::HandleValueArray::empty(), aActor)) {
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aRv.NoteJSContextException(cx);
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return;
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}
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}
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(WindowGlobalActor)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(WindowGlobalActor)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(WindowGlobalActor)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(WindowGlobalActor)
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} // namespace dom
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} // namespace mozilla
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