/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/*

 * This file is part of the libmspub project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 */

#ifndef INCLUDED_SHAPEGROUPELEMENT_H

#define INCLUDED_SHAPEGROUPELEMENT_H

#include <functional>

#include <memory>

#include <vector>

#include <boost/optional.hpp>

#include "ShapeInfo.h"

#include "VectorTransformation2D.h"

namespace libmspub

{

struct Coordinate;

class ShapeGroupElement

{

  boost::optional<ShapeInfo> m_shapeInfo;

  std::weak_ptr<ShapeGroupElement> m_parent;

  std::vector<std::shared_ptr<ShapeGroupElement>> m_children;

  unsigned m_seqNum;

  ShapeGroupElement &operator=(const ShapeGroupElement &) = delete;

  ShapeGroupElement(const ShapeGroupElement &) = delete;

  VectorTransformation2D m_transform;

  ShapeGroupElement(const std::shared_ptr<ShapeGroupElement> &parent, unsigned seqNum);

public:

  ~ShapeGroupElement();

  static std::shared_ptr<ShapeGroupElement> create(const std::shared_ptr<ShapeGroupElement> &parent, unsigned seqNum = 0);

  void setShapeInfo(const ShapeInfo &shapeInfo);

  void setup(std::function<void(ShapeGroupElement &self)> visitor);

  void visit(std::function<

             std::function<void(void)>

             (const ShapeInfo &info, const Coordinate &relativeTo, const VectorTransformation2D &foldedTransform, bool isGroup, const VectorTransformation2D &thisTransform)> visitor,

             const Coordinate &relativeTo, const VectorTransformation2D &foldedTransform) const;

  void visit(std::function<

             std::function<void(void)>

             (const ShapeInfo &info, const Coordinate &relativeTo, const VectorTransformation2D &foldedTransform, bool isGroup, const VectorTransformation2D &thisTransform)> visitor) const;

  bool isGroup() const;

  std::shared_ptr<ShapeGroupElement> getParent() const;

  void setSeqNum(unsigned seqNum);

  void setTransform(const VectorTransformation2D &transform);

  unsigned getSeqNum() const;

};

}

#endif

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