/* * Copyright (c) 2021, Andreas Kling * Copyright (c) 2022, the SerenityOS developers. * * SPDX-License-Identifier: BSD-2-Clause */ #include #include #include #include namespace Web::RequestIdleCallback { WebIDL::ExceptionOr> IdleDeadline::create(JS::Realm& realm, bool did_timeout) { return MUST_OR_THROW_OOM(realm.heap().allocate(realm, realm, did_timeout)); } IdleDeadline::IdleDeadline(JS::Realm& realm, bool did_timeout) : PlatformObject(realm) , m_did_timeout(did_timeout) { } JS::ThrowCompletionOr IdleDeadline::initialize(JS::Realm& realm) { MUST_OR_THROW_OOM(Base::initialize(realm)); set_prototype(&Bindings::ensure_web_prototype(realm, "IdleDeadline")); return {}; } IdleDeadline::~IdleDeadline() = default; // https://w3c.github.io/requestidlecallback/#dom-idledeadline-timeremaining double IdleDeadline::time_remaining() const { auto const& event_loop = HTML::main_thread_event_loop(); // 1. Let now be a DOMHighResTimeStamp representing current high resolution time in milliseconds. auto now = HighResolutionTime::unsafe_shared_current_time(); // 2. Let deadline be the result of calling IdleDeadline's get deadline time algorithm. auto deadline = event_loop.compute_deadline(); // 3. Let timeRemaining be deadline - now. auto time_remaining = deadline - now; // 4. If timeRemaining is negative, set it to 0. if (time_remaining < 0) time_remaining = 0; // 5. Return timeRemaining. // NOTE: coarsening to milliseconds return ceil(time_remaining); } }