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ae346cff6b
Add a partial implementation of HTML5 Worker API. Messages can be sent from the inner context externally.
108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
/*
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* Copyright (c) 2022, Ben Abraham <ben.d.abraham@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/RefCounted.h>
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#include <AK/URLParser.h>
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#include <LibJS/Interpreter.h>
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#include <LibWeb/Bindings/MainThreadVM.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/MessageEvent.h>
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#include <LibWeb/HTML/MessagePort.h>
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#include <LibWeb/HTML/Scripting/ClassicScript.h>
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#include <LibWeb/HTML/Scripting/WindowEnvironmentSettingsObject.h>
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#include <LibWeb/HTML/Scripting/WorkerEnvironmentSettingsObject.h>
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#include <LibWeb/HTML/WorkerDebugConsoleClient.h>
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#include <LibWeb/Loader/ResourceLoader.h>
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#define ENUMERATE_WORKER_EVENT_HANDLERS(E) \
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E(onmessage, HTML::EventNames::message) \
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E(onmessageerror, HTML::EventNames::messageerror)
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namespace Web::HTML {
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struct WorkerOptions {
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String type { "classic" };
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String credentials { "same-origin" };
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String name { "" };
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};
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// https://html.spec.whatwg.org/multipage/workers.html#dedicated-workers-and-the-worker-interface
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class Worker
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: public RefCounted<Worker>
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, public Weakable<Worker>
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, public DOM::EventTarget
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, public Bindings::Wrappable {
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public:
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using WrapperType = Bindings::WorkerWrapper;
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using RefCounted::ref;
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using RefCounted::unref;
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static DOM::ExceptionOr<NonnullRefPtr<Worker>> create(FlyString const& script_url, WorkerOptions const options, DOM::Document& document);
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static DOM::ExceptionOr<NonnullRefPtr<Worker>> create_with_global_object(Bindings::WindowObject& window, FlyString const& script_url, WorkerOptions const options)
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{
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return Worker::create(script_url, options, window.impl().associated_document());
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}
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DOM::ExceptionOr<void> terminate();
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void post_message(JS::Value message, JS::Value transfer);
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virtual ~Worker() = default;
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// ^EventTarget
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virtual void ref_event_target() override { ref(); }
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virtual void unref_event_target() override { unref(); }
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virtual JS::Object* create_wrapper(JS::GlobalObject&) override;
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MessagePort* implicit_message_port() { return m_implicit_port; }
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RefPtr<MessagePort> outside_message_port() { return m_outside_port; }
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#undef __ENUMERATE
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#define __ENUMERATE(attribute_name, event_name) \
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void set_##attribute_name(Optional<Bindings::CallbackType>); \
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Bindings::CallbackType* attribute_name();
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ENUMERATE_WORKER_EVENT_HANDLERS(__ENUMERATE)
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#undef __ENUMERATE
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protected:
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Worker(FlyString const&, const WorkerOptions, DOM::Document&);
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private:
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static HTML::EventLoop& get_vm_event_loop(JS::VM& target_vm)
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{
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return static_cast<Bindings::WebEngineCustomData*>(target_vm.custom_data())->event_loop;
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}
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FlyString m_script_url;
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WorkerOptions m_options;
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WeakPtr<DOM::Document> m_document;
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Bindings::WebEngineCustomData m_custom_data;
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NonnullRefPtr<JS::VM> m_worker_vm;
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NonnullOwnPtr<JS::Interpreter> m_interpreter;
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WeakPtr<WorkerEnvironmentSettingsObject> m_inner_settings;
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JS::VM::InterpreterExecutionScope m_interpreter_scope;
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JS::ExecutionContext m_execution_context;
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WeakPtr<JS::Realm> m_worker_realm;
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RefPtr<WorkerDebugConsoleClient> m_console;
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JS::GlobalObject* m_worker_scope;
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NonnullRefPtr<MessagePort> m_implicit_port;
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RefPtr<MessagePort> m_outside_port;
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void run_a_worker(AK::URL& url, EnvironmentSettingsObject& outside_settings, MessagePort& outside_port, WorkerOptions const options);
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};
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} // namespace Web::HTML
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namespace Web::Bindings {
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WorkerWrapper* wrap(JS::GlobalObject&, HTML::Worker&);
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}
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