/*
 * Copyright (C) 2020 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.
 */

#pragma once

#include "Element.h"
#include "KeyframeEffectStack.h"
#include "PseudoElement.h"
#include "RenderStyleConstants.h"
#include "WebAnimationTypes.h"

namespace WebCore {

class KeyframeEffectStack;
class RenderElement;
class RenderStyle;
class WebAnimation;

struct Styleable {
    Element& element;
    PseudoId pseudoId;

    Styleable(Element& element, PseudoId pseudoId)
        : element(element)
        , pseudoId(pseudoId)
    {
        ASSERT(!is<PseudoElement>(element));
    }

    static const Styleable fromElement(Element& element)
    {
        if (is<PseudoElement>(element))
            return Styleable(*downcast<PseudoElement>(element).hostElement(), element.pseudoId());
        return Styleable(element, element.pseudoId());
    }

    static const std::optional<const Styleable> fromRenderer(const RenderElement&);

    bool operator==(const Styleable& other) const
    {
        return (&element == &other.element && pseudoId == other.pseudoId);
    }

    RenderElement* renderer() const;

    std::unique_ptr<RenderStyle> computeAnimatedStyle() const;

    // If possible, compute the visual extent of any transform animation using the given rect,
    // returning the result in the rect. Return false if there is some transform animation but
    // we were unable to cheaply compute its effect on the extent.
    bool computeAnimationExtent(LayoutRect&) const;

    bool mayHaveNonZeroOpacity() const;

    bool isRunningAcceleratedTransformAnimation() const;

    bool runningAnimationsAreAllAccelerated() const;

    KeyframeEffectStack* keyframeEffectStack() const
    {
        return element.keyframeEffectStack(pseudoId);
    }

    KeyframeEffectStack& ensureKeyframeEffectStack() const
    {
        return element.ensureKeyframeEffectStack(pseudoId);
    }

    bool hasKeyframeEffects() const
    {
        return element.hasKeyframeEffects(pseudoId);
    }

    OptionSet<AnimationImpact> applyKeyframeEffects(RenderStyle& targetStyle, HashSet<AnimatableCSSProperty>& affectedProperties, const RenderStyle* previousLastStyleChangeEventStyle, const Style::ResolutionContext& resolutionContext) const
    {
        return element.ensureKeyframeEffectStack(pseudoId).applyKeyframeEffects(targetStyle, affectedProperties, previousLastStyleChangeEventStyle, resolutionContext);
    }

    const AnimationCollection* animations() const
    {
        return element.animations(pseudoId);
    }

    bool hasCompletedTransitionForProperty(const AnimatableCSSProperty& property) const
    {
        return element.hasCompletedTransitionForProperty(pseudoId, property);
    }

    bool hasRunningTransitionForProperty(const AnimatableCSSProperty& property) const
    {
        return element.hasRunningTransitionForProperty(pseudoId, property);
    }

    bool hasRunningTransitions() const
    {
        return element.hasRunningTransitions(pseudoId);
    }

    AnimationCollection& ensureAnimations() const
    {
        return element.ensureAnimations(pseudoId);
    }

    AnimatableCSSPropertyToTransitionMap& ensureCompletedTransitionsByProperty() const
    {
        return element.ensureCompletedTransitionsByProperty(pseudoId);
    }

    AnimatableCSSPropertyToTransitionMap& ensureRunningTransitionsByProperty() const
    {
        return element.ensureRunningTransitionsByProperty(pseudoId);
    }

    CSSAnimationCollection& animationsCreatedByMarkup() const
    {
        return element.animationsCreatedByMarkup(pseudoId);
    }

    void setAnimationsCreatedByMarkup(CSSAnimationCollection&& collection) const
    {
        element.setAnimationsCreatedByMarkup(pseudoId, WTFMove(collection));
    }

    const RenderStyle* lastStyleChangeEventStyle() const
    {
        return element.lastStyleChangeEventStyle(pseudoId);
    }

    void setLastStyleChangeEventStyle(std::unique_ptr<const RenderStyle>&& style) const
    {
        element.setLastStyleChangeEventStyle(pseudoId, WTFMove(style));
    }

    void keyframesRuleDidChange() const
    {
        element.keyframesRuleDidChange(pseudoId);
    }

    void queryContainerDidChange() const;

    bool animationListContainsNewlyValidAnimation(const AnimationList&) const;

    void elementWasRemoved() const;

    void willChangeRenderer() const;
    void cancelDeclarativeAnimations() const;

    void animationWasAdded(WebAnimation&) const;
    void animationWasRemoved(WebAnimation&) const;

    void removeDeclarativeAnimationFromListsForOwningElement(WebAnimation&) const;

    void updateCSSAnimations(const RenderStyle* currentStyle, const RenderStyle& afterChangeStyle, const Style::ResolutionContext&) const;
    void updateCSSTransitions(const RenderStyle& currentStyle, const RenderStyle& newStyle) const;
};

} // namespace WebCore
