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LIST.H
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C/C++ Source or Header
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1991-07-04
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1KB
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50 lines
// list.h -- Header for list.cpp
#ifndef __LIST_H
#define __LIST_H 1 // Prevent multiple #includes
#include <stdlib.h>
#include "item.h"
class list: public item {
private:
item *anchor; // Anchors list head
item *cip; // "Current item pointer"
public:
// -- Constructor and destructor
list();
virtual ~list();
// -- Inline member functions
int listEmpty(void)
{ return (anchor == NULL); }
int atHeadOfList(void)
{ return ((anchor != NULL) && (cip == anchor)); }
int atEndOfList(void)
{ return ((anchor != NULL) && (cip == anchor->left)); }
item *currentItem(void)
{ return cip; }
item *firstItem(void)
{ return (cip = anchor); }
void resetList(void)
{ cip = anchor; }
void setCurrentItem(item *ip)
{ cip = ip; }
// -- Other member functions
item *insertItem(item *ip);
item *removeItem(item *ip);
item *prevItem(void);
item *nextItem(void);
// Virtual member function
virtual void disposeList(void);
};
#endif // __LIST_H
// Copyright (c) 1990 by Tom Swan. All rights reserved
// Revision 1.00 Date: 09/03/1990 Time: 09:56 am