InfoBool.h

/*
 *  Copyright (C) 2005-2018 Team Kodi
 *  This file is part of Kodi - https://kodi.tv
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 *  See LICENSES/README.md for more information.
 */

#pragma once

#include <memory>
#include <string>

class CGUIListItem;
class CGUIInfoManager;

namespace INFO
{
class InfoBool
{
public:
  InfoBool(const std::string &expression, int context, unsigned int &refreshCounter);
  virtual ~InfoBool() = default;

  virtual void Initialize(CGUIInfoManager* infoMgr) { m_infoMgr = infoMgr; }

  inline bool Get(int contextWindow, const CGUIListItem* item = nullptr)
  {
    if (item && m_listItemDependent)
      Update(contextWindow, item);
    else if (m_refreshCounter != m_parentRefreshCounter || m_refreshCounter == 0)
    {
      Update(contextWindow, nullptr);
      m_refreshCounter = m_parentRefreshCounter;
    }
    return m_value;
  }

  bool operator==(const InfoBool &right) const
  {
    return (m_context == right.m_context &&
            m_expression == right.m_expression);
  }

  bool operator<(const InfoBool &right) const
  {
    if (m_context < right.m_context)
      return true;
    else if (m_context == right.m_context)
      return m_expression < right.m_expression;
    else
      return false;
  }

  virtual void Update(int contextWindow, const CGUIListItem* item) {}

  const std::string &GetExpression() const { return m_expression; }
  bool ListItemDependent() const { return m_listItemDependent; }
protected:
  bool m_value = false; 
  int m_context;               
  bool m_listItemDependent = false; 
  std::string  m_expression;   
  CGUIInfoManager* m_infoMgr;

private:
  unsigned int m_refreshCounter = 0;
  unsigned int &m_parentRefreshCounter;
};

typedef std::shared_ptr<InfoBool> InfoPtr;
};