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- /*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #include <LibWeb/DOM/Document.h>
- #include <LibWeb/DOM/Event.h>
- #include <LibWeb/DOM/EventDispatcher.h>
- #include <LibWeb/HTML/Window.h>
- #include <LibWeb/HighResolutionTime/Performance.h>
- #include <LibWeb/NavigationTiming/PerformanceTiming.h>
- namespace Web::HighResolutionTime {
- Performance::Performance(HTML::Window& window)
- : DOM::EventTarget(window.realm())
- , m_window(window)
- {
- m_timer.start();
- }
- Performance::~Performance() = default;
- JS::ThrowCompletionOr<void> Performance::initialize(JS::Realm& realm)
- {
- MUST_OR_THROW_OOM(Base::initialize(realm));
- set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformancePrototype>(realm, "Performance"));
- return {};
- }
- void Performance::visit_edges(Cell::Visitor& visitor)
- {
- Base::visit_edges(visitor);
- visitor.visit(m_window.ptr());
- visitor.visit(m_timing.ptr());
- }
- JS::GCPtr<NavigationTiming::PerformanceTiming> Performance::timing()
- {
- if (!m_timing)
- m_timing = heap().allocate<NavigationTiming::PerformanceTiming>(realm(), *m_window).release_allocated_value_but_fixme_should_propagate_errors();
- return m_timing;
- }
- double Performance::time_origin() const
- {
- return static_cast<double>(m_timer.origin_time().to_milliseconds());
- }
- }
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