mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 11:08:11 +00:00
2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/HTML/EventLoop/EventLoop.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/RequestIdleCallback/IdleDeadline.h>
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namespace Web::RequestIdleCallback {
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JS::NonnullGCPtr<IdleDeadline> IdleDeadline::create(JS::Realm& realm, bool did_timeout)
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{
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return realm.heap().allocate<IdleDeadline>(realm, realm, did_timeout);
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}
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IdleDeadline::IdleDeadline(JS::Realm& realm, bool did_timeout)
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: PlatformObject(realm)
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, m_did_timeout(did_timeout)
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{
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}
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JS::ThrowCompletionOr<void> IdleDeadline::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::IdleDeadlinePrototype>(realm, "IdleDeadline"));
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return {};
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}
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IdleDeadline::~IdleDeadline() = default;
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// https://w3c.github.io/requestidlecallback/#dom-idledeadline-timeremaining
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double IdleDeadline::time_remaining() const
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{
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auto const& event_loop = HTML::main_thread_event_loop();
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// 1. Let now be a DOMHighResTimeStamp representing current high resolution time in milliseconds.
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auto now = HighResolutionTime::unsafe_shared_current_time();
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// 2. Let deadline be the result of calling IdleDeadline's get deadline time algorithm.
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auto deadline = event_loop.compute_deadline();
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// 3. Let timeRemaining be deadline - now.
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auto time_remaining = deadline - now;
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// 4. If timeRemaining is negative, set it to 0.
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if (time_remaining < 0)
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time_remaining = 0;
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// 5. Return timeRemaining.
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// NOTE: coarsening to milliseconds
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return ceil(time_remaining);
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}
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}
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