list.h

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#ifndef ADEON_LIST_H
#define ADEON_LIST_H
 
#include <Arduino.h>
 
constexpr static auto LIST_ITEM_LENGTH = 16;
 
class ItemList {
    protected:
      class Item;
      ItemList();
       
    public:      
      Item* addItem(const char* pId, uint16_t val);
      void deleteItem(Item* pItem);
      void deleteHead();
      char* editItemId(Item* pItem, const char* pNewId);
        void editItemVal(Item* pItem, uint16_t val);
      Item* findItem(const char* pId);
      bool isInList(Item* pItem);
      bool isIdLenValid(const char* pId);
      bool isListEmpty();
      uint8_t getNumOfItems();
      uint16_t getItemVal(Item* pItem);
      void printData();
 
    protected:
      Item* _pHead = nullptr;
      Item* _pLast = nullptr; 
      uint8_t _numOfItems = 0;
 
      class Item {
        public:
          Item(const char* pId, uint16_t val);
          void setPointToNextItem(Item* pItem);
          Item* getPointToNextItem();
          void setPointToPrevItem(Item* pItem);
          Item* getPointToPrevItem();
          void saveId(const char* pSrc);
 
          char* id;
          uint16_t value = 0;
          uint8_t accessRights = 1;
          void (*_pCallback)(uint16_t) = nullptr;
 
        private:
          Item* _pNext = nullptr;
          Item* _pPrev = nullptr; 
    };  
};
 
#endif // ADEON_LIST_H