mirror of
https://github.com/RGBCube/serenity
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ffad902c07
Unlike ensure_web_prototype<T>(), the cached version doesn't require the prototype type to be fully formed, so we can use it without including the FooPrototype.h header. It's also a bit less verbose. :^)
46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@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/DOM/Document.h>
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#include <LibWeb/DOM/Event.h>
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#include <LibWeb/DOM/EventDispatcher.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/HighResolutionTime/Performance.h>
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#include <LibWeb/NavigationTiming/PerformanceTiming.h>
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namespace Web::HighResolutionTime {
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Performance::Performance(HTML::Window& window)
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: DOM::EventTarget(window.realm())
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, m_window(window)
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{
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set_prototype(&window.cached_web_prototype("Performance"));
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m_timer.start();
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}
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Performance::~Performance() = default;
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void Performance::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_window.ptr());
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visitor.visit(m_timing.ptr());
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}
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JS::GCPtr<NavigationTiming::PerformanceTiming> Performance::timing()
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{
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if (!m_timing)
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m_timing = heap().allocate<NavigationTiming::PerformanceTiming>(realm(), *m_window);
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return m_timing;
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}
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double Performance::time_origin() const
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{
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auto origin = m_timer.origin_time();
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return (origin.tv_sec * 1000.0) + (origin.tv_usec / 1000.0);
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}
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}
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