v8::Local<v8::Context> toV8Context(v8::Isolate* isolate, Frame* frame, DOMWrapperWorld* world)
{
ASSERT(frame);
v8::Local<v8::Context> context = frame->script().windowShell(world)->context();
if (context.IsEmpty())
return v8::Local<v8::Context>();
Frame* attachedFrame= toFrameIfNotDetached(context);
return frame == attachedFrame ? context : v8::Local<v8::Context>();
}
v8::Local<v8::Context> ScriptController::currentWorldContext()
{
if (V8DOMWindowShell* isolatedShell = V8DOMWindowShell::getEntered()) {
v8::Persistent<v8::Context> context = isolatedShell->context();
if (context.IsEmpty() || m_frame != toFrameIfNotDetached(context))
return v8::Local<v8::Context>();
return v8::Local<v8::Context>::New(context);
}
windowShell()->initializeIfNeeded();
return v8::Local<v8::Context>::New(windowShell()->context());
}
void V8WrapperInstantiationScope::securityCheck(v8::Isolate* isolate, v8::Local<v8::Context> contextForWrapper)
{
if (m_context.IsEmpty())
return;
// If the context is different, we need to make sure that the current
// context has access to the creation context.
Frame* frame = toFrameIfNotDetached(contextForWrapper);
if (!frame)
return;
const DOMWrapperWorld& currentWorld = DOMWrapperWorld::world(m_context);
RELEASE_ASSERT(currentWorld.worldId() == DOMWrapperWorld::world(contextForWrapper).worldId());
if (currentWorld.isMainWorld()) {
RELEASE_ASSERT(BindingSecurity::shouldAllowAccessToFrame(isolate, callingDOMWindow(isolate), frame, DoNotReportSecurityError));
}
}
v8::Local<v8::Context> ScriptController::currentWorldContext()
{
if (!isolate()->InContext())
return contextForWorld(*this, mainThreadNormalWorld());
v8::Handle<v8::Context> context = isolate()->GetEnteredContext();
DOMWrapperWorld* isolatedWorld = DOMWrapperWorld::isolatedWorld(context);
if (!isolatedWorld)
return contextForWorld(*this, mainThreadNormalWorld());
Frame* frame = toFrameIfNotDetached(context);
if (m_frame == frame)
return v8::Local<v8::Context>::New(m_isolate, context);
return contextForWorld(*this, isolatedWorld);
}
bool handleOutOfMemory()
{
v8::Local<v8::Context> context = v8::Isolate::GetCurrent()->GetCurrentContext();
if (!context->HasOutOfMemoryException())
return false;
// Warning, error, disable JS for this frame?
Frame* frame = toFrameIfNotDetached(context);
if (!frame)
return true;
frame->script().clearForOutOfMemory();
frame->loader().client()->didExhaustMemoryAvailableForScript();
if (Settings* settings = frame->settings())
settings->setScriptEnabled(false);
return true;
}
v8::Local<v8::Context> ScriptController::currentWorldContext()
{
if (!v8::Context::InContext())
return contextForWorld(this, mainThreadNormalWorld());
v8::Handle<v8::Context> context = v8::Context::GetEntered();
DOMWrapperWorld* isolatedWorld = DOMWrapperWorld::isolated(context);
if (!isolatedWorld)
return contextForWorld(this, mainThreadNormalWorld());
Frame* frame = toFrameIfNotDetached(context);
if (!m_frame)
return v8::Local<v8::Context>();
if (m_frame == frame)
return v8::Local<v8::Context>::New(context);
// FIXME: Need to handle weak isolated worlds correctly.
if (isolatedWorld->createdFromUnitializedWorld())
return v8::Local<v8::Context>();
return contextForWorld(this, isolatedWorld);
}
static LocalFrame* retrieveFrameWithGlobalObjectCheck(v8::Local<v8::Context> context)
{
return toLocalFrame(toFrameIfNotDetached(context));
}
