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/*
* Copyright (c) 2022, Ben Abraham <ben.d.abraham@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <AK/URLParser.h>
#include <LibJS/Interpreter.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/Forward.h>
#include <LibWeb/HTML/MessageEvent.h>
#include <LibWeb/HTML/MessagePort.h>
#include <LibWeb/HTML/Scripting/ClassicScript.h>
#include <LibWeb/HTML/Scripting/WindowEnvironmentSettingsObject.h>
#include <LibWeb/HTML/Scripting/WorkerEnvironmentSettingsObject.h>
#include <LibWeb/HTML/WorkerDebugConsoleClient.h>
#include <LibWeb/Loader/ResourceLoader.h>
#define ENUMERATE_WORKER_EVENT_HANDLERS(E) \
E(onmessage, HTML::EventNames::message) \
E(onmessageerror, HTML::EventNames::messageerror)
namespace Web::HTML {
struct WorkerOptions {
String type { "classic" };
String credentials { "same-origin" };
String name { "" };
};
// https://html.spec.whatwg.org/multipage/workers.html#dedicated-workers-and-the-worker-interface
class Worker : public DOM::EventTarget {
WEB_PLATFORM_OBJECT(Worker, DOM::EventTarget);
public:
static DOM::ExceptionOr<JS::NonnullGCPtr<Worker>> create(FlyString const& script_url, WorkerOptions const options, DOM::Document& document);
static DOM::ExceptionOr<JS::NonnullGCPtr<Worker>> create_with_global_object(HTML::Window& window, FlyString const& script_url, WorkerOptions const options)
{
return Worker::create(script_url, options, window.associated_document());
}
DOM::ExceptionOr<void> terminate();
void post_message(JS::Value message, JS::Value transfer);
virtual ~Worker() = default;
MessagePort* implicit_message_port() { return m_implicit_port.ptr(); }
JS::GCPtr<MessagePort> outside_message_port() { return m_outside_port; }
#undef __ENUMERATE
#define __ENUMERATE(attribute_name, event_name) \
void set_##attribute_name(Bindings::CallbackType*); \
Bindings::CallbackType* attribute_name();
ENUMERATE_WORKER_EVENT_HANDLERS(__ENUMERATE)
#undef __ENUMERATE
protected:
Worker(FlyString const&, const WorkerOptions, DOM::Document&);
private:
static HTML::EventLoop& get_vm_event_loop(JS::VM& target_vm)
{
return static_cast<Bindings::WebEngineCustomData*>(target_vm.custom_data())->event_loop;
}
virtual void visit_edges(Cell::Visitor&) override;
FlyString m_script_url;
WorkerOptions m_options;
JS::GCPtr<DOM::Document> m_document;
Bindings::WebEngineCustomData m_custom_data;
NonnullRefPtr<JS::VM> m_worker_vm;
NonnullOwnPtr<JS::Interpreter> m_interpreter;
WeakPtr<WorkerEnvironmentSettingsObject> m_inner_settings;
JS::VM::InterpreterExecutionScope m_interpreter_scope;
RefPtr<WorkerDebugConsoleClient> m_console;
JS::NonnullGCPtr<MessagePort> m_implicit_port;
JS::GCPtr<MessagePort> m_outside_port;
// NOTE: These are inside the worker VM.
JS::GCPtr<JS::Realm> m_worker_realm;
JS::GCPtr<JS::Object> m_worker_scope;
// FIXME: This is a mega-hack but necessary because HTML::Window holds all the prototypes and constructors.
// There should be *no* Window object in a Worker context.
JS::GCPtr<HTML::Window> m_worker_window;
void run_a_worker(AK::URL& url, EnvironmentSettingsObject& outside_settings, MessagePort& outside_port, WorkerOptions const options);
};
}
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