Source/WebCore/css/parser/SizesAttributeParser.h

// Copyright 2014 The Chromium Authors. All rights reserved.
// Copyright (C) 2016 Apple Inc. All rights reserved.
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#pragma once

#include "CSSParserTokenRange.h"
#include "CSSPrimitiveValue.h"
#include <wtf/text/WTFString.h>

namespace WebCore {

class CSSValue;
class Document;
class MediaQuerySet;
struct MediaQueryDynamicResults;
    
class SizesAttributeParser {
public:
    SizesAttributeParser(const String&, const Document&, MediaQueryDynamicResults* = nullptr);

    float length();

    static float defaultLength(const Document&);
    static float computeLength(double value, CSSUnitType, const Document&);

private:
    bool parse(CSSParserTokenRange);
    float effectiveSize();
    bool calculateLengthInPixels(CSSParserTokenRange, float& result);
    bool mediaConditionMatches(const MediaQuerySet& mediaCondition);
    unsigned effectiveSizeDefaultValue();

    const Document& m_document;
    RefPtr<MediaQuerySet> m_mediaCondition;
    MediaQueryDynamicResults* m_mediaQueryDynamicResults { nullptr };
    float m_length { 0 };
    bool m_lengthWasSet { false };
    bool m_isValid { false };
};

} // namespace WebCore