#include "myitem.h"




class list : public breakpoint
	{
		private:
			breakpoint * anchor;
			breakpoint * cip;
			

		public:
			int size;
			list();
			virtual ~list();
			int listEmpty()
				{return (anchor == 0);}
			int atHeadOfList()
				{return ((anchor != 0) && (cip == anchor));}
			int atEndOfList()
				{return ((anchor !=0) && (cip == anchor->getleft()));}
			breakpoint * currentbreakpoint()
				{ return cip;}
			breakpoint * firstbreakpoint()
				{ return (cip = anchor);}
			void resetlist()
				{ cip = anchor;}
			void setCurrentBreakpoint(breakpoint * ip)
				{ cip = ip;}

			virtual breakpoint * insertbreakpoint(breakpoint *);
			
			breakpoint * removebreakpoint(breakpoint *);
			breakpoint * prevbreakpoint();
			breakpoint * nextbreakpoint();
			void sortlist();
			void swap(breakpoint *,breakpoint *);
			int compare(breakpoint *, breakpoint *);			

		
			//virtual void showbreakpoint();
			virtual void disposelist();

	};