/*

* Copyright (C) Canon Inc. 2016

* Copyright (C) 2017 Apple Inc. All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

*

* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR

* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#include "config.h"

#include "AnimationTimeline.h"

#include "KeyframeEffect.h"

#include "KeyframeEffectStack.h"

#include "StyleResolver.h"

#include "Styleable.h"

#include "WebAnimationUtilities.h"

namespace WebCore {

AnimationTimeline::AnimationTimeline() = default;

AnimationTimeline::~AnimationTimeline() = default;

void AnimationTimeline::forgetAnimation(WebAnimation* animation)

{

m_allAnimations.removeFirst(animation);

}

void AnimationTimeline::animationTimingDidChange(WebAnimation& animation)

{

updateGlobalPosition(animation);

if (m_animations.add(&animation)) {

m_allAnimations.append(makeWeakPtr(&animation));

auto* timeline = animation.timeline();

if (timeline && timeline != this)

timeline->removeAnimation(animation);

}

}

void AnimationTimeline::updateGlobalPosition(WebAnimation& animation)

{

static uint64_t s_globalPosition = 0;

if (!animation.globalPosition() && animation.canHaveGlobalPosition())

animation.setGlobalPosition(++s_globalPosition);

}

void AnimationTimeline::removeAnimation(WebAnimation& animation)

{

ASSERT(!animation.timeline() || animation.timeline() == this);

m_animations.remove(&animation);

if (is<KeyframeEffect>(animation.effect())) {

if (auto styleable = downcast<KeyframeEffect>(animation.effect())->targetStyleable()) {

styleable->animationWasRemoved(animation);

styleable->ensureKeyframeEffectStack().removeEffect(*downcast<KeyframeEffect>(animation.effect()));

}

}

}

std::optional<double> AnimationTimeline::bindingsCurrentTime()

{

auto time = currentTime();

if (!time)

return std::nullopt;

return secondsToWebAnimationsAPITime(*time);

}

} // namespace WebCore