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#include "third_party/blink/renderer/core/animation/inert_effect.h"

#include "third_party/blink/renderer/core/animation/interpolation.h"

namespace blink {

InertEffect::InertEffect(KeyframeEffectModelBase* model,
                         const Timing& timing,
                         bool paused,
                         base::Optional<AnimationTimeDelta> inherited_time,
                         base::Optional<TimelinePhase> inherited_phase)
    : AnimationEffect(timing),
      model_(model),
      paused_(paused),
      inherited_time_(inherited_time),
      inherited_phase_(inherited_phase) {}

void InertEffect::Sample(HeapVector<Member<Interpolation>>& result) const {
  UpdateInheritedTime(inherited_time_, inherited_phase_, kTimingUpdateOnDemand);
  if (!IsInEffect()) {
    result.clear();
    return;
  }

  base::Optional<double> iteration = CurrentIteration();
  DCHECK(iteration);
  DCHECK_GE(iteration.value(), 0);
  model_->Sample(clampTo<int>(iteration.value(), 0), Progress().value(),
                 SpecifiedTiming().IterationDuration(), result);
}

AnimationTimeDelta InertEffect::CalculateTimeToEffectChange(
    bool,
    base::Optional<double>,
    AnimationTimeDelta) const {
  return AnimationTimeDelta::Max();
}

void InertEffect::Trace(Visitor* visitor) const {
  visitor->Trace(model_);
  AnimationEffect::Trace(visitor);
}

}  // namespace blink