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#ifndef GridLength_h
#define GridLength_h
#include "platform/Length.h"
namespace WebCore {
// This class wraps the <track-breadth> which can be either a <percentage>, <length>, min-content, max-content
// or <flex>. This class avoids spreading the knowledge of <flex> throughout the rendering directory by adding
// an new unit to Length.h.
class GridLength {
public:
GridLength(const Length& length)
: m_length(length)
, m_flex(0)
, m_type(LengthType)
{
ASSERT(!length.isUndefined());
}
explicit GridLength(double flex)
: m_flex(flex)
, m_type(FlexType)
{
}
bool isLength() const { return m_type == LengthType; }
bool isFlex() const { return m_type == FlexType; }
const Length& length() const { ASSERT(isLength()); return m_length; }
double flex() const { ASSERT(isFlex()); return m_flex; }
bool operator==(const GridLength& o) const
{
return m_length == o.m_length && m_flex == o.m_flex && m_type == o.m_type;
}
bool isContentSized() const { return m_type == LengthType && (m_length.isAuto() || m_length.isMinContent() || m_length.isMaxContent()); }
private:
// Ideally we would put the 2 following fields in a union, but Length has a constructor,
// a destructor and a copy assignment which isn't allowed.
Length m_length;
double m_flex;
enum GridLengthType {
LengthType,
FlexType
};
GridLengthType m_type;
};
} // namespace WebCore
#endif // GridLength_h