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https://github.com/LadybirdBrowser/ladybird.git
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b10fee00eb
This aligns Workers and Window and MessagePorts to all use the same mechanism for transferring serialized messages across realms. It also allows transferring more message ports into a worker. Re-enable the Worker-echo test, as none of the MessagePort tests have themselves been flaky, and those are now using the same underlying implementation.
125 lines
5.0 KiB
C++
125 lines
5.0 KiB
C++
/*
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* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Vector.h>
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#include <LibWeb/Bindings/DedicatedWorkerExposedInterfaces.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/WorkerGlobalScopePrototype.h>
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#include <LibWeb/HTML/EventHandler.h>
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#include <LibWeb/HTML/EventNames.h>
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#include <LibWeb/HTML/MessageEvent.h>
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#include <LibWeb/HTML/StructuredSerialize.h>
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#include <LibWeb/HTML/WorkerGlobalScope.h>
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#include <LibWeb/HTML/WorkerLocation.h>
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#include <LibWeb/HTML/WorkerNavigator.h>
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#include <LibWeb/Page/Page.h>
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namespace Web::HTML {
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JS_DEFINE_ALLOCATOR(WorkerGlobalScope);
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WorkerGlobalScope::WorkerGlobalScope(JS::Realm& realm, JS::NonnullGCPtr<Web::Page> page)
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: DOM::EventTarget(realm)
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, m_page(page)
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{
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}
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WorkerGlobalScope::~WorkerGlobalScope() = default;
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void WorkerGlobalScope::initialize_web_interfaces(Badge<WorkerEnvironmentSettingsObject>)
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{
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auto& realm = this->realm();
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Base::initialize(realm);
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// FIXME: Handle shared worker
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add_dedicated_worker_exposed_interfaces(*this);
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Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::WorkerGlobalScopePrototype>(realm, "WorkerGlobalScope"_fly_string));
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WindowOrWorkerGlobalScopeMixin::initialize(realm);
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m_navigator = WorkerNavigator::create(*this);
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}
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void WorkerGlobalScope::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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WindowOrWorkerGlobalScopeMixin::visit_edges(visitor);
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visitor.visit(m_location);
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visitor.visit(m_navigator);
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visitor.visit(m_internal_port);
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visitor.visit(m_page);
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}
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void WorkerGlobalScope::set_internal_port(JS::NonnullGCPtr<MessagePort> port)
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{
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m_internal_port = port;
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m_internal_port->set_worker_event_target(*this);
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}
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// https://html.spec.whatwg.org/multipage/workers.html#importing-scripts-and-libraries
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WebIDL::ExceptionOr<void> WorkerGlobalScope::import_scripts(Vector<String> urls)
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{
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// The algorithm may optionally be customized by supplying custom perform the fetch hooks,
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// which if provided will be used when invoking fetch a classic worker-imported script.
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// NOTE: Service Workers is an example of a specification that runs this algorithm with its own options for the perform the fetch hook.
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// FIXME: 1. If worker global scope's type is "module", throw a TypeError exception.
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// FIXME: 2. Let settings object be the current settings object.
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// 3. If urls is empty, return.
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if (urls.is_empty())
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return {};
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// FIXME: 4. Parse each value in urls relative to settings object. If any fail, throw a "SyntaxError" DOMException.
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// FIXME: 5. For each url in the resulting URL records, run these substeps:
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// 1. Fetch a classic worker-imported script given url and settings object, passing along any custom perform the fetch steps provided.
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// If this succeeds, let script be the result. Otherwise, rethrow the exception.
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// 2. Run the classic script script, with the rethrow errors argument set to true.
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// NOTE: script will run until it either returns, fails to parse, fails to catch an exception,
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// or gets prematurely aborted by the terminate a worker algorithm defined above.
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// If an exception was thrown or if the script was prematurely aborted, then abort all these steps,
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// letting the exception or aborting continue to be processed by the calling script.
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return {};
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}
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// https://html.spec.whatwg.org/multipage/workers.html#dom-workerglobalscope-location
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JS::NonnullGCPtr<WorkerLocation> WorkerGlobalScope::location() const
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{
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// The location attribute must return the WorkerLocation object whose associated WorkerGlobalScope object is the WorkerGlobalScope object.
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return *m_location;
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}
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// https://html.spec.whatwg.org/multipage/workers.html#dom-worker-navigator
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JS::NonnullGCPtr<WorkerNavigator> WorkerGlobalScope::navigator() const
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{
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// The navigator attribute of the WorkerGlobalScope interface must return an instance of the WorkerNavigator interface,
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// which represents the identity and state of the user agent (the client).
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return *m_navigator;
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}
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WebIDL::ExceptionOr<void> WorkerGlobalScope::post_message(JS::Value message, StructuredSerializeOptions const& options)
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{
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return m_internal_port->post_message(message, options);
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}
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#undef __ENUMERATE
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#define __ENUMERATE(attribute_name, event_name) \
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void WorkerGlobalScope::set_##attribute_name(WebIDL::CallbackType* value) \
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{ \
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set_event_handler_attribute(event_name, move(value)); \
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} \
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WebIDL::CallbackType* WorkerGlobalScope::attribute_name() \
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{ \
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return event_handler_attribute(event_name); \
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}
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ENUMERATE_WORKER_GLOBAL_SCOPE_EVENT_HANDLERS(__ENUMERATE)
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#undef __ENUMERATE
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}
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