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

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#ifndef HTMLDimension_h
#define HTMLDimension_h

#include "core/CoreExport.h"
#include "platform/wtf/Allocator.h"
#include "platform/wtf/Forward.h"
#include "platform/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 { kRelative, kPercentage, kAbsolute };

  HTMLDimension() : type_(kAbsolute), value_(0) {}

  HTMLDimension(double value, HTMLDimensionType type)
      : type_(type), value_(value) {}

  HTMLDimensionType GetType() const { return type_; }

  bool IsRelative() const { return type_ == kRelative; }
  bool IsPercentage() const { return type_ == kPercentage; }
  bool IsAbsolute() const { return type_ == kAbsolute; }

  double Value() const { return value_; }

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

 private:
  HTMLDimensionType type_;
  double value_;
};

CORE_EXPORT Vector<HTMLDimension> ParseListOfDimensions(const String&);
CORE_EXPORT bool ParseDimensionValue(const String&, HTMLDimension&);

}  // namespace blink

#endif  // HTMLDimension_h