third_party/WebKit/Source/core/style/StyleSelfAlignmentData.h

// Copyright (c) 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef StyleSelfAlignmentData_h
#define StyleSelfAlignmentData_h

#include "core/style/ComputedStyleConstants.h"
#include "wtf/Allocator.h"

namespace blink {

class StyleSelfAlignmentData {
  DISALLOW_NEW();

 public:
  // Style data for Self-Aligment and Default-Alignment properties: align-{self,
  // items}, justify-{self, items}.
  // [ <self-position> && <overflow-position>? ] | [ legacy && [ left | right |
  // center ] ]
  StyleSelfAlignmentData(ItemPosition position,
                         OverflowAlignment overflow,
                         ItemPositionType positionType = NonLegacyPosition)
      : m_position(position),
        m_positionType(positionType),
        m_overflow(overflow) {}

  void setPosition(ItemPosition position) { m_position = position; }
  void setPositionType(ItemPositionType positionType) {
    m_positionType = positionType;
  }
  void setOverflow(OverflowAlignment overflow) { m_overflow = overflow; }

  ItemPosition position() const {
    return static_cast<ItemPosition>(m_position);
  }
  ItemPositionType positionType() const {
    return static_cast<ItemPositionType>(m_positionType);
  }
  OverflowAlignment overflow() const {
    return static_cast<OverflowAlignment>(m_overflow);
  }

  bool operator==(const StyleSelfAlignmentData& o) const {
    return m_position == o.m_position && m_positionType == o.m_positionType &&
           m_overflow == o.m_overflow;
  }

  bool operator!=(const StyleSelfAlignmentData& o) const {
    return !(*this == o);
  }

 private:
  unsigned m_position : 4;      // ItemPosition
  unsigned m_positionType : 1;  // Whether or not alignment uses the 'legacy'
                                // keyword.
  unsigned m_overflow : 2;      // OverflowAlignment
};

}  // namespace blink

#endif  // StyleSelfAlignmentData_h