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/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <AK/Weakable.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/DOM/EventTarget.h>
#include <LibWeb/Forward.h>
namespace Web::HTML {
#define ENUMERATE_MESSAGE_PORT_EVENT_HANDLERS(E) \
E(onmessage, HTML::EventNames::message) \
E(onmessageerror, HTML::EventNames::messageerror)
// https://html.spec.whatwg.org/multipage/web-messaging.html#message-ports
class MessagePort final
: public RefCounted<MessagePort>
, public Weakable<MessagePort>
, public DOM::EventTarget
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::MessagePortWrapper;
using RefCounted::ref;
using RefCounted::unref;
static NonnullRefPtr<MessagePort> create(Bindings::ScriptExecutionContext& context)
{
return adopt_ref(*new MessagePort(context));
}
virtual ~MessagePort() override;
// ^EventTarget
virtual void ref_event_target() override { ref(); }
virtual void unref_event_target() override { unref(); }
virtual bool dispatch_event(NonnullRefPtr<DOM::Event>) override;
virtual JS::Object* create_wrapper(JS::GlobalObject&) override;
// https://html.spec.whatwg.org/multipage/web-messaging.html#entangle
void entangle_with(Badge<MessageChannel>, MessagePort&);
// https://html.spec.whatwg.org/multipage/web-messaging.html#dom-messageport-postmessage
void post_message(JS::Value);
void start();
void close();
#undef __ENUMERATE
#define __ENUMERATE(attribute_name, event_name) \
void set_##attribute_name(HTML::EventHandler); \
HTML::EventHandler attribute_name();
ENUMERATE_MESSAGE_PORT_EVENT_HANDLERS(__ENUMERATE)
#undef __ENUMERATE
private:
explicit MessagePort(Bindings::ScriptExecutionContext&);
bool is_entangled() const { return m_remote_port; }
void disentangle();
// The HTML spec implies(!) that this is MessagePort.[[RemotePort]]
WeakPtr<MessagePort> m_remote_port;
// https://html.spec.whatwg.org/multipage/web-messaging.html#has-been-shipped
bool m_has_been_shipped { false };
// This is TransferableObject.[[Detached]]
bool m_detached { false };
};
}
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