third_party/WebKit/Source/core/html/HTMLDimension.h

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#ifndef HTMLDimension_h
#define HTMLDimension_h

#include "core/CoreExport.h"
#include "wtf/Allocator.h"
#include "wtf/Forward.h"
#include "wtf/Vector.h"

namespace blink {

// This class corresponds to a dimension as described in HTML5 by the
// "rules for parsing a list of dimensions" (section 2.4.4.6).
class HTMLDimension {
    DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
public:
    enum HTMLDimensionType {
        Relative, Percentage, Absolute
    };

    HTMLDimension()
        : m_type(Absolute)
        , m_value(0)
    {
    }

    HTMLDimension(double value, HTMLDimensionType type)
        : m_type(type)
        , m_value(value)
    {
    }

    HTMLDimensionType type() const { return m_type; }

    bool isRelative() const { return m_type == Relative; }
    bool isPercentage() const { return m_type == Percentage; }
    bool isAbsolute() const { return m_type == Absolute; }

    double value() const { return m_value; }

    bool operator==(const HTMLDimension& other) const
    {
        return m_type == other.m_type && m_value == other.m_value;
    }
    bool operator!=(const HTMLDimension& other) const { return !(*this == other); }

private:
    HTMLDimensionType m_type;
    double m_value;
};

CORE_EXPORT Vector<HTMLDimension> parseListOfDimensions(const String&);

} // namespace blink

#endif // HTMLDimension_h