/*
 * Copyright (c) 2013, Opera Software ASA. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Opera Software ASA nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef BorderImageLengthBox_h
#define BorderImageLengthBox_h

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

namespace blink {

// Represents a computed border image width or outset.
//
// http://www.w3.org/TR/css3-background/#border-image-width
// http://www.w3.org/TR/css3-background/#border-image-outset
class BorderImageLengthBox {
  DISALLOW_NEW();

 public:
  BorderImageLengthBox(Length length)
      : m_left(length), m_right(length), m_top(length), m_bottom(length) {}

  BorderImageLengthBox(double number)
      : m_left(number), m_right(number), m_top(number), m_bottom(number) {}

  BorderImageLengthBox(const BorderImageLength& top,
                       const BorderImageLength& right,
                       const BorderImageLength& bottom,
                       const BorderImageLength& left)
      : m_left(left), m_right(right), m_top(top), m_bottom(bottom) {}

  const BorderImageLength& left() const { return m_left; }
  const BorderImageLength& right() const { return m_right; }
  const BorderImageLength& top() const { return m_top; }
  const BorderImageLength& bottom() const { return m_bottom; }

  bool operator==(const BorderImageLengthBox& other) const {
    return m_left == other.m_left && m_right == other.m_right &&
           m_top == other.m_top && m_bottom == other.m_bottom;
  }

  bool operator!=(const BorderImageLengthBox& other) const {
    return !(*this == other);
  }

  bool nonZero() const {
    return !(m_left.isZero() && m_right.isZero() && m_top.isZero() &&
             m_bottom.isZero());
  }

 private:
  BorderImageLength m_left;
  BorderImageLength m_right;
  BorderImageLength m_top;
  BorderImageLength m_bottom;
};

}  // namespace blink

#endif  // BorderImageLengthBox_h
