void WindowProxy::createContext() {
// FIXME: This should be a null check of m_frame->client(), but there are
// still some edge cases
// that this fails to catch during frame detach.
if (m_frame->isLocalFrame() &&
!toLocalFrame(m_frame)->loader().documentLoader())
return;
// Create a new v8::Context with the window object as the global object
// (aka the inner global). Reuse the global proxy object (aka the outer
// global) if it already exists. See the comments in
// setupWindowPrototypeChain for the structure of the prototype chain of
// the global object.
v8::Local<v8::ObjectTemplate> globalTemplate =
V8Window::domTemplate(m_isolate, *m_world)->InstanceTemplate();
if (globalTemplate.IsEmpty())
return;
// FIXME: It's not clear what the right thing to do for remote frames is.
// The extensions registered don't generally seem to make sense for remote
// frames, so skip it for now.
Vector<const char*> extensionNames;
if (m_frame->isLocalFrame()) {
LocalFrame* frame = toLocalFrame(m_frame);
// Dynamically tell v8 about our extensions now.
const V8Extensions& extensions = ScriptController::registeredExtensions();
extensionNames.reserveInitialCapacity(extensions.size());
int extensionGroup = m_world->extensionGroup();
int worldId = m_world->worldId();
for (const auto* extension : extensions) {
if (!frame->loader().client()->allowScriptExtension(
extension->name(), extensionGroup, worldId))
continue;
extensionNames.append(extension->name());
}
}
v8::ExtensionConfiguration extensionConfiguration(extensionNames.size(),
extensionNames.data());
v8::Local<v8::Context> context;
{
V8PerIsolateData::UseCounterDisabledScope useCounterDisabled(
V8PerIsolateData::from(m_isolate));
context = v8::Context::New(m_isolate, &extensionConfiguration,
globalTemplate, m_global.newLocal(m_isolate));
}
if (context.IsEmpty())
return;
m_scriptState = ScriptState::create(context, m_world);
}
bool WorkerOrWorkletScriptController::initializeContextIfNeeded() {
v8::HandleScope handleScope(m_isolate);
if (isContextInitialized())
return true;
// Create a new v8::Context with the worker/worklet as the global object
// (aka the inner global).
ScriptWrappable* scriptWrappable = m_globalScope->getScriptWrappable();
const WrapperTypeInfo* wrapperTypeInfo = scriptWrappable->wrapperTypeInfo();
v8::Local<v8::FunctionTemplate> globalInterfaceTemplate =
wrapperTypeInfo->domTemplate(m_isolate, *m_world);
if (globalInterfaceTemplate.IsEmpty())
return false;
v8::Local<v8::ObjectTemplate> globalTemplate =
globalInterfaceTemplate->InstanceTemplate();
v8::Local<v8::Context> context;
{
// Initialize V8 extensions before creating the context.
Vector<const char*> extensionNames;
if (m_globalScope->isServiceWorkerGlobalScope() &&
Platform::current()->allowScriptExtensionForServiceWorker(
toWorkerGlobalScope(m_globalScope.get())->url())) {
const V8Extensions& extensions = ScriptController::registeredExtensions();
extensionNames.reserveInitialCapacity(extensions.size());
for (const auto* extension : extensions)
extensionNames.push_back(extension->name());
}
v8::ExtensionConfiguration extensionConfiguration(extensionNames.size(),
extensionNames.data());
V8PerIsolateData::UseCounterDisabledScope useCounterDisabled(
V8PerIsolateData::from(m_isolate));
context =
v8::Context::New(m_isolate, &extensionConfiguration, globalTemplate);
}
if (context.IsEmpty())
return false;
m_scriptState = ScriptState::create(context, m_world);
ScriptState::Scope scope(m_scriptState.get());
// The global proxy object. Note this is not the global object.
v8::Local<v8::Object> globalProxy = context->Global();
V8DOMWrapper::setNativeInfo(m_isolate, globalProxy, wrapperTypeInfo,
scriptWrappable);
// The global object, aka worker/worklet wrapper object.
v8::Local<v8::Object> globalObject =
globalProxy->GetPrototype().As<v8::Object>();
globalObject = V8DOMWrapper::associateObjectWithWrapper(
m_isolate, scriptWrappable, wrapperTypeInfo, globalObject);
// All interfaces must be registered to V8PerContextData.
// So we explicitly call constructorForType for the global object.
V8PerContextData::from(context)->constructorForType(wrapperTypeInfo);
// Name new context for debugging. For main thread worklet global scopes
// this is done once the context is initialized.
if (m_globalScope->isWorkerGlobalScope() ||
m_globalScope->isThreadedWorkletGlobalScope()) {
WorkerThreadDebugger* debugger = WorkerThreadDebugger::from(m_isolate);
debugger->contextCreated(m_globalScope->thread(), context);
}
return true;
}
