Performance.cpp 1.3 KB

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  1. /*
  2. * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
  3. *
  4. * SPDX-License-Identifier: BSD-2-Clause
  5. */
  6. #include <LibWeb/DOM/Document.h>
  7. #include <LibWeb/DOM/Event.h>
  8. #include <LibWeb/DOM/EventDispatcher.h>
  9. #include <LibWeb/HTML/Window.h>
  10. #include <LibWeb/HighResolutionTime/Performance.h>
  11. #include <LibWeb/NavigationTiming/PerformanceTiming.h>
  12. namespace Web::HighResolutionTime {
  13. Performance::Performance(HTML::Window& window)
  14. : DOM::EventTarget(window.realm())
  15. , m_window(window)
  16. {
  17. m_timer.start();
  18. }
  19. Performance::~Performance() = default;
  20. JS::ThrowCompletionOr<void> Performance::initialize(JS::Realm& realm)
  21. {
  22. MUST_OR_THROW_OOM(Base::initialize(realm));
  23. set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformancePrototype>(realm, "Performance"));
  24. return {};
  25. }
  26. void Performance::visit_edges(Cell::Visitor& visitor)
  27. {
  28. Base::visit_edges(visitor);
  29. visitor.visit(m_window.ptr());
  30. visitor.visit(m_timing.ptr());
  31. }
  32. JS::GCPtr<NavigationTiming::PerformanceTiming> Performance::timing()
  33. {
  34. if (!m_timing)
  35. m_timing = heap().allocate<NavigationTiming::PerformanceTiming>(realm(), *m_window).release_allocated_value_but_fixme_should_propagate_errors();
  36. return m_timing;
  37. }
  38. double Performance::time_origin() const
  39. {
  40. return static_cast<double>(m_timer.origin_time().to_milliseconds());
  41. }
  42. }