Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
+ * Copyright (c) 2022, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/IdleDeadlinePrototype.h>
+#include <LibWeb/HTML/EventLoop/EventLoop.h>
+#include <LibWeb/HTML/Window.h>
+#include <LibWeb/HighResolutionTime/TimeOrigin.h>
+#include <LibWeb/RequestIdleCallback/IdleDeadline.h>
+
+namespace Web::RequestIdleCallback {
+
+JS_DEFINE_ALLOCATOR(IdleDeadline);
+
+JS::NonnullGCPtr<IdleDeadline> IdleDeadline::create(JS::Realm& realm, bool did_timeout)
+{
+    return realm.heap().allocate<IdleDeadline>(realm, realm, did_timeout);
+}
+
+IdleDeadline::IdleDeadline(JS::Realm& realm, bool did_timeout)
+    : PlatformObject(realm)
+    , m_did_timeout(did_timeout)
+{
+}
+
+void IdleDeadline::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(IdleDeadline);
+}
+
+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::current_high_resolution_time(HTML::relevant_global_object(*this));
+    // 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);
+}
+
+}