/*

 * Copyright (c) 2023-2024, Matthew Olsson <mattco@serenityos.org>.

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include <LibWeb/Animations/Animation.h>

#include <LibWeb/Animations/AnimationTimeline.h>

#include <LibWeb/Bindings/AnimationTimelinePrototype.h>

#include <LibWeb/DOM/Document.h>

namespace Web::Animations {

JS_DEFINE_ALLOCATOR(AnimationTimeline);

void AnimationTimeline::set_current_time(Optional<double> value)

{

    if (value == m_current_time)

        return;

    if (m_is_monotonically_increasing && m_current_time.has_value()) {

        if (!value.has_value() || value.value() < m_current_time.value())

            m_is_monotonically_increasing = false;

    }

    m_current_time = value;

    for (auto& animation : m_associated_animations)

        animation->notify_timeline_time_did_change();

}

void AnimationTimeline::set_associated_document(JS::GCPtr<DOM::Document> document)

{

    if (document)

        document->associate_with_timeline(*this);

    if (m_associated_document)

        m_associated_document->disassociate_with_timeline(*this);

    m_associated_document = document;

}

// https://www.w3.org/TR/web-animations-1/#inactive-timeline

bool AnimationTimeline::is_inactive() const

{

    // A timeline is considered to be inactive when its time value is unresolved.

    return !m_current_time.has_value();

}

AnimationTimeline::AnimationTimeline(JS::Realm& realm)

    : Bindings::PlatformObject(realm)

{

}

void AnimationTimeline::finalize()

{

    if (m_associated_document)

        m_associated_document->disassociate_with_timeline(*this);

}

void AnimationTimeline::initialize(JS::Realm& realm)

{

    Base::initialize(realm);

    WEB_SET_PROTOTYPE_FOR_INTERFACE(AnimationTimeline);

}

void AnimationTimeline::visit_edges(Cell::Visitor& visitor)

{

    Base::visit_edges(visitor);

    visitor.visit(m_associated_document);

    visitor.visit(m_associated_animations);

}

}