- /******************************************************************************************************************
- DLinkedList.h: interface for the CDLList class.
- *******************************************************************************************************************/
- #if !defined(AFX_DLINKEDLIST_H__FA0909F7_8D66_4986_83D4_12A536AEACE2__INCLUDED_)
- #define AFX_DLINKEDLIST_H__FA0909F7_8D66_4986_83D4_12A536AEACE2__INCLUDED_
- #if _MSC_VER > 1000
- #pragma once
- #endif // _MSC_VER > 1000
- using namespace std;
- template<class T>
- class CDLList
- {
- private:
- typedef struct tagNODE
- {
- T typeData;
- tagNODE* pNextNode;
- tagNODE* pPrevNode;
- tagNODE(T data, tagNODE* pNext=NULL, tagNODE* pPrev=NULL)
- {
- typeData = data;
- pNextNode = pNext;
- pPrevNode = pPrev;
- }
- }NODE, *LPNODE;
- LPNODE m_stHead;
- LPNODE m_pstCurrNode;
- LPNODE m_stTail;
- INT m_nCurrentPos;
- INT m_nCounter;
- public:
- CDLList(CDLList<T>& DLList);
- // Constructor
- CDLList()
- {
- m_stHead = NULL;
- m_stTail = NULL;
- m_pstCurrNode = NULL;
- m_nCounter = 0;
- m_nCurrentPos = 0;
- };
- // Destructor
- virtual ~CDLList()
- {
- ClearAllNodes();
- };
- VOID AddNode(T data)
- {
- LPNODE pstTempNode = new NODE(data);
- if ( m_stTail != NULL )
- {
- m_stTail->pNextNode = pstTempNode;
- pstTempNode->pNextNode = pstTempNode;
- pstTempNode->pPrevNode = m_stTail;
- m_stTail = m_stTail->pNextNode;
- }
- else
- {
- m_stHead = pstTempNode;
- m_stHead->pPrevNode = m_stHead;
- m_stHead->pNextNode = m_stHead;
- m_stTail = m_stHead;
- m_pstCurrNode = m_stHead;
- }
- m_nCounter++;
- };
- BOOL DeleteCurrentNode(VOID)
- {
- LPNODE pstTempNode;
- if ( m_pstCurrNode != NULL )
- {
- m_nCounter--;
- m_pstCurrNode->pPrevNode->pNextNode = m_pstCurrNode->pNextNode;
- m_pstCurrNode->pNextNode->pPrevNode = m_pstCurrNode->pPrevNode;
- pstTempNode = m_pstCurrNode;
- m_pstCurrNode = m_pstCurrNode->pNextNode;
- if ( pstTempNode == m_pstCurrNode ) // Current = Tail ?
- {
- m_stTail = m_stTail->pPrevNode;
- m_pstCurrNode = m_pstCurrNode->pPrevNode;
- m_pstCurrNode->pNextNode = m_pstCurrNode;
- m_nCurrentPos--;
- if ( m_pstCurrNode == pstTempNode ) // Current = Head = Tail ?
- {
- m_stHead = NULL;
- m_stTail = NULL;
- m_pstCurrNode = NULL;
- m_nCurrentPos = 0;
- }
- }
- else if(pstTempNode == m_stHead) // Current = Head ?
- {
- m_stHead = pstTempNode->pNextNode;
- m_pstCurrNode = pstTempNode->pNextNode;
- m_pstCurrNode->pPrevNode = m_pstCurrNode;
- if ( pstTempNode == m_stHead ) // Current = Head = Tail ?
- {
- m_stHead = NULL;
- m_stTail = NULL;
- m_pstCurrNode = NULL;
- m_nCurrentPos = 0;
- }
- }
- delete pstTempNode;
- return TRUE;
- }
- else
- {
- return FALSE;
- }
- };
- INT ListLength(VOID)
- {
- return m_nCounter;
- };
- INT MoveNextNode(VOID)
- {
- LPNODE pstTempNode;
- if ( m_pstCurrNode && m_pstCurrNode->pNextNode )
- {
- pstTempNode = m_pstCurrNode;
- m_pstCurrNode = pstTempNode->pNextNode;
- m_nCurrentPos = (m_nCurrentPos<m_nCounter) ? m_nCurrentPos+1: m_nCounter;
- }
- return m_nCurrentPos;
- };
- INT MovePreviousNode(VOID)
- {
- LPNODE pstTempNode;
- pstTempNode = m_pstCurrNode;
- m_pstCurrNode = pstTempNode->pPrevNode;
- m_nCurrentPos = (m_nCurrentPos>1) ? m_nCurrentPos-1: 1;
- return m_nCurrentPos;
- };
- INT MoveNode(INT nMovement)
- {
- if ( nMovement > 0 )
- {
- for ( INT nLoops = 0; nLoops < nMovement; nLoops++ )
- MoveNextNode();
- }
- else
- {
- nMovement = (-nMovement);
- for ( INT nLoops = 0; nLoops < nMovement; nLoops++)
- MovePreviousNode();
- }
- return m_nCurrentPos;
- };
- VOID MoveCurrentToTop(VOID)
- {
- m_pstCurrNode = m_stHead;
- m_nCurrentPos = 0;
- };
- VOID MoveCurrentToTail(VOID)
- {
- m_pstCurrNode = m_stTail;
- m_nCurrentPos = m_nCounter-1;
- };
- VOID ClearAllNodes(VOID)
- {
- LPNODE pstTempNode;
- if ( m_nCounter > 0 )
- {
- for ( INT nLoops = 0; nLoops < m_nCounter; nLoops++ )
- {
- pstTempNode = m_stHead;
- m_stHead = m_stHead->pNextNode;
- delete pstTempNode;
- }
- }
- m_nCounter = 0;
- m_stHead = NULL;
- m_stTail = NULL;
- m_pstCurrNode = NULL;
- m_nCurrentPos =0;
- };
- T* GetCurrentData(VOID)
- {
- return &(m_pstCurrNode->typeData);
- };
- INT GetCounter(VOID)
- {
- return m_nCounter;
- };
- INT GetCurrPosition(VOID)
- {
- return m_nCurrentPos;
- };
- BOOL IsCurrentTail(VOID)
- {
- if ( m_pstCurrNode == m_stTail )
- return TRUE;
- else
- return FALSE;
- };
- BOOL IsCurrentHead(VOID)
- {
- if (m_pstCurrNode == m_stHead )
- return TRUE;
- else
- return FALSE;
- }
- BOOL CheckEmpty()
- {
- if ( m_stHead == NULL )
- return TRUE;
- else
- return FALSE;
- }
- };
- #endif // !defined(AFX_DLINKEDLIST_H__FA0909F7_8D66_4986_83D4_12A536AEACE2__INCLUDED_)