haikuwebkit/Source/WebCore/style/PseudoClassChangeInvalidation.h

/*
 * 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
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 * 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. AND ITS CONTRIBUTORS ``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 ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 */

#pragma once

#include "CSSSelector.h"
#include "Element.h"
#include "StyleInvalidator.h"
#include <wtf/Vector.h>

namespace WebCore {
namespace Style {

class PseudoClassChangeInvalidation {
public:
    PseudoClassChangeInvalidation(Element&, CSSSelector::PseudoClassType, InvalidationScope = InvalidationScope::All);
    ~PseudoClassChangeInvalidation();

private:
    void computeInvalidation(CSSSelector::PseudoClassType, Style::InvalidationScope);
    void invalidateStyleWithRuleSets();

    const bool m_isEnabled;
    Element& m_element;

    Invalidator::MatchElementRuleSets m_matchElementRuleSets;
};

inline PseudoClassChangeInvalidation::PseudoClassChangeInvalidation(Element& element, CSSSelector::PseudoClassType pseudoClassType, Style::InvalidationScope invalidationScope)
    : m_isEnabled(element.needsStyleInvalidation())
    , m_element(element)

{
    if (!m_isEnabled)
        return;
    computeInvalidation(pseudoClassType, invalidationScope);
    invalidateStyleWithRuleSets();
}

inline PseudoClassChangeInvalidation::~PseudoClassChangeInvalidation()
{
    if (!m_isEnabled)
        return;
    invalidateStyleWithRuleSets();
}

}
}