#pragma once
#include "ActiveDOMObject.h"
#include "EventTarget.h"
#include "ExceptionOr.h"
#include "MessagePortChannel.h"
#include "MessagePortIdentifier.h"
#include "MessageWithMessagePorts.h"
#include "PostMessageOptions.h"
#include <wtf/WeakPtr.h>
namespace JSC {
class CallFrame;
class JSObject;
class JSValue;
}
namespace WebCore {
class Frame;
class MessagePort final : public ActiveDOMObject, public EventTargetWithInlineData, public CanMakeWeakPtr<MessagePort, WeakPtrFactoryInitialization::Eager> {
WTF_MAKE_NONCOPYABLE(MessagePort);
WTF_MAKE_ISO_ALLOCATED(MessagePort);
public:
static Ref<MessagePort> create(ScriptExecutionContext&, const MessagePortIdentifier& local, const MessagePortIdentifier& remote);
virtual ~MessagePort();
ExceptionOr<void> postMessage(JSC::JSGlobalObject&, JSC::JSValue message, PostMessageOptions&&);
void start();
void close();
void entangle();
static ExceptionOr<TransferredMessagePortArray> disentanglePorts(Vector<RefPtr<MessagePort>>&&);
static Vector<RefPtr<MessagePort>> entanglePorts(ScriptExecutionContext&, TransferredMessagePortArray&&);
WEBCORE_EXPORT static bool isExistingMessagePortLocallyReachable(const MessagePortIdentifier&);
WEBCORE_EXPORT static void notifyMessageAvailable(const MessagePortIdentifier&);
WEBCORE_EXPORT void messageAvailable();
bool started() const { return m_started; }
bool closed() const { return m_closed; }
void dispatchMessages();
MessagePort* locallyEntangledPort() const;
const MessagePortIdentifier& identifier() const { return m_identifier; }
const MessagePortIdentifier& remoteIdentifier() const { return m_remoteIdentifier; }
WEBCORE_EXPORT void ref() const;
WEBCORE_EXPORT void deref() const;
WEBCORE_EXPORT bool isLocallyReachable() const;
EventTargetInterface eventTargetInterface() const final { return MessagePortEventTargetInterfaceType; }
ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
void dispatchEvent(Event&) final;
private:
explicit MessagePort(ScriptExecutionContext&, const MessagePortIdentifier& local, const MessagePortIdentifier& remote);
bool addEventListener(const AtomString& eventType, Ref<EventListener>&&, const AddEventListenerOptions&) final;
bool removeEventListener(const AtomString& eventType, EventListener&, const ListenerOptions&) final;
const char* activeDOMObjectName() const final;
void contextDestroyed() final;
void stop() final { close(); }
bool virtualHasPendingActivity() const final;
void disentangle();
void registerLocalActivity();
bool isEntangled() const { return !m_closed && m_entangled; }
void updateActivity(MessagePortChannelProvider::HasActivity);
bool m_started { false };
bool m_closed { false };
bool m_entangled { true };
mutable bool m_mightBeEligibleForGC { false };
mutable bool m_hasHadLocalActivitySinceLastCheck { false };
mutable bool m_isRemoteEligibleForGC { false };
mutable bool m_isAskingRemoteAboutGC { false };
bool m_hasMessageEventListener { false };
MessagePortIdentifier m_identifier;
MessagePortIdentifier m_remoteIdentifier;
mutable std::atomic<unsigned> m_refCount { 1 };
};
}