Source/core/animation/Animation.cpp

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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#include "config.h"
#include "core/animation/Animation.h"

#include "core/dom/Element.h"

namespace WebCore {

PassRefPtr<Animation> Animation::create(PassRefPtr<Element> target, PassRefPtr<AnimationEffect> effect)
{
    return adoptRef(new Animation(target, effect));
}

Animation::Animation(PassRefPtr<Element> target, PassRefPtr<AnimationEffect> effect)
    : m_target(target)
    , m_effect(effect)
    , m_isInTargetActiveAnimationsList(false)
{
}

Animation::~Animation()
{
    if (m_isInTargetActiveAnimationsList)
        m_target->removeActiveAnimation(this);
}

// Generate animation values for a timer tick at the provided time. This time represents the
// parent group's iteration time, or the document time if no parent group exists.
TimedItem::ChildAnimationState Animation::serviceAnimations(double time)
{
    if (!m_isInTargetActiveAnimationsList) {
        m_target->addActiveAnimation(this);
        m_isInTargetActiveAnimationsList = true;
    }

    updateTimeFraction(time);
    m_cachedStyle = m_effect->sample(m_timeFraction, m_currentIteration);
    m_target->setNeedsStyleRecalc(SyntheticStyleChange);

    // For now, all animations last 1 second.
    if (time < 1)
        return AnimationInProgress;

    m_target->removeActiveAnimation(this);
    m_isInTargetActiveAnimationsList = false;
    return AnimationCompleted;
}

} // namespace