mirror of
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114 lines
4.6 KiB
C++
114 lines
4.6 KiB
C++
/*
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* Copyright (c) 2023, Luke Wilde <lukew@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 <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/PerformanceMarkPrototype.h>
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#include <LibWeb/HTML/StructuredSerialize.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/HighResolutionTime/TimeOrigin.h>
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#include <LibWeb/NavigationTiming/EntryNames.h>
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#include <LibWeb/PerformanceTimeline/EntryTypes.h>
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#include <LibWeb/UserTiming/PerformanceMark.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::UserTiming {
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JS_DEFINE_ALLOCATOR(PerformanceMark);
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PerformanceMark::PerformanceMark(JS::Realm& realm, String const& name, HighResolutionTime::DOMHighResTimeStamp start_time, HighResolutionTime::DOMHighResTimeStamp duration, JS::Value detail)
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: PerformanceTimeline::PerformanceEntry(realm, name, start_time, duration)
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, m_detail(detail)
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{
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}
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PerformanceMark::~PerformanceMark() = default;
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// https://w3c.github.io/user-timing/#dfn-performancemark-constructor
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WebIDL::ExceptionOr<JS::NonnullGCPtr<PerformanceMark>> PerformanceMark::construct_impl(JS::Realm& realm, String const& mark_name, Web::UserTiming::PerformanceMarkOptions const& mark_options)
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{
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auto& current_global_object = realm.global_object();
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auto& vm = realm.vm();
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// 1. If the current global object is a Window object and markName uses the same name as a read only attribute in the PerformanceTiming interface, throw a SyntaxError.
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if (is<HTML::Window>(current_global_object)) {
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bool matched = false;
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#define __ENUMERATE_NAVIGATION_TIMING_ENTRY_NAME(name, _) \
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if (mark_name == NavigationTiming::EntryNames::name) \
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matched = true;
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ENUMERATE_NAVIGATION_TIMING_ENTRY_NAMES
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#undef __ENUMERATE_NAVIGATION_TIMING_ENTRY_NAME
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if (matched)
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return WebIDL::SyntaxError::create(realm, MUST(String::formatted("'{}' markName cannot be used in a Window context because it is part of the PerformanceTiming interface", mark_name)));
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}
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// NOTE: Step 2 (creating the entry) is done after determining values, as we set the values once during creation and never change them after.
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// 3. Set entry's name attribute to markName.
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auto const& name = mark_name;
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// 4. Set entry's entryType attribute to DOMString "mark".
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// NOTE: Already done via the `entry_type` virtual function.
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// 5. Set entry's startTime attribute as follows:
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HighResolutionTime::DOMHighResTimeStamp start_time { 0.0 };
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// 1. If markOptions's startTime member is present, then:
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if (mark_options.start_time.has_value()) {
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// 1. If markOptions's startTime is negative, throw a TypeError.
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if (mark_options.start_time.value() < 0.0)
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "startTime cannot be negative"sv };
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// 2. Otherwise, set entry's startTime to the value of markOptions's startTime.
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start_time = mark_options.start_time.value();
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}
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// 2. Otherwise, set it to the value that would be returned by the Performance object's now() method.
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else {
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// FIXME: Performance#now doesn't currently use TimeOrigin's functions, update this and Performance#now to match Performance#now's specification.
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start_time = HighResolutionTime::unsafe_shared_current_time();
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}
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// 6. Set entry's duration attribute to 0.
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constexpr HighResolutionTime::DOMHighResTimeStamp duration = 0.0;
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// 7. If markOptions's detail is null, set entry's detail to null.
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JS::Value detail;
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if (mark_options.detail.is_null()) {
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detail = JS::js_null();
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}
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// 8. Otherwise:
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else {
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// 1. Let record be the result of calling the StructuredSerialize algorithm on markOptions's detail.
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auto record = TRY(HTML::structured_serialize(vm, mark_options.detail));
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// 2. Set entry's detail to the result of calling the StructuredDeserialize algorithm on record and the current realm.
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detail = TRY(HTML::structured_deserialize(vm, record, realm, Optional<HTML::DeserializationMemory> {}));
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}
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// 2. Create a new PerformanceMark object (entry) with the current global object's realm.
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return realm.heap().allocate<PerformanceMark>(realm, realm, name, start_time, duration, detail);
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}
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FlyString const& PerformanceMark::entry_type() const
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{
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return PerformanceTimeline::EntryTypes::mark;
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}
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void PerformanceMark::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformanceMarkPrototype>(realm, "PerformanceMark"_fly_string));
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}
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void PerformanceMark::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_detail);
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}
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}
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