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159 lines
3.6 KiB
159 lines
3.6 KiB
#ifndef _NAMELLST_H_
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#define _NAMELLST_H_
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#include <objbase.h>
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#include "mischlpr.h"
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///////////////////////////////////////////////////////////////////////////////
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//
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class CNamedElem : public CRefCounted
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{
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public:
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HRESULT GetName(LPTSTR psz, DWORD cch, DWORD* pcchRequired);
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virtual HRESULT Init(LPCTSTR pszElemName) PURE;
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#ifdef DEBUG
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LPCTSTR DbgGetName();
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#endif
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protected:
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CNamedElem();
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virtual ~CNamedElem();
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HRESULT _SetName(LPCTSTR pszElemName);
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HRESULT _FreeName();
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protected:
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LPTSTR _pszElemName;
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// for access to _pelemNext
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friend class CNamedElemList;
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};
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///////////////////////////////////////////////////////////////////////////////
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//
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class CFillEnum : public CRefCounted
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{
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public:
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virtual HRESULT Next(LPTSTR pszElemName, DWORD cchElemName,
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DWORD* pcchRequired) = 0;
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};
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///////////////////////////////////////////////////////////////////////////////
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//
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typedef HRESULT (*NAMEDELEMCREATEFCT)(CNamedElem** ppelem);
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// return values:
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// S_OK when everything's all right
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// S_FALSE when no more items
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// E_BUFFERTOOSMALL if buffer too small
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typedef HRESULT (*NAMEDELEMGETFILLENUMFCT)(CFillEnum** ppfillenum);
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///////////////////////////////////////////////////////////////////////////////
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//
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class CElemSlot : public CRefCounted
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{
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public:
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HRESULT Init(CNamedElem* pelem, CElemSlot* pesPrev, CElemSlot* pesNext);
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HRESULT Remove();
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HRESULT GetNamedElem(CNamedElem** ppelem);
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void SetPrev(CElemSlot* pes);
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CElemSlot* GetNextValid();
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CElemSlot* GetPrevValid();
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BOOL IsValid();
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public:
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CElemSlot();
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virtual ~CElemSlot();
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private:
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// Payload
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CNamedElem* _pelem;
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// Impl details
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BOOL _fValid;
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CElemSlot* _pesPrev;
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CElemSlot* _pesNext;
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};
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///////////////////////////////////////////////////////////////////////////////
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//
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class CNamedElemEnum : public CRefCounted
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{
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public:
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HRESULT Next(CNamedElem** ppelem);
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public:
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CNamedElemEnum();
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virtual ~CNamedElemEnum();
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private:
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HRESULT _Init(CElemSlot* pesHead, CRefCountedCritSect* pcsList);
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private:
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CElemSlot* _pesCurrent;
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BOOL _fFirst;
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CRefCountedCritSect* _pcsList;
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// for access to _Init
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friend class CNamedElemList;
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};
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///////////////////////////////////////////////////////////////////////////////
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//
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class CNamedElemList : public CRefCounted
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{
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public:
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HRESULT Init(NAMEDELEMCREATEFCT createfct,
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NAMEDELEMGETFILLENUMFCT enumfct);
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// Returns S_FALSE if cannot find it
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HRESULT Get(LPCTSTR pszElemName, CNamedElem** ppelem);
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// Returns S_OK if was already existing
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// S_FALSE if was just added
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HRESULT GetOrAdd(LPCTSTR pszElemName, CNamedElem** ppelem);
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HRESULT Add(LPCTSTR pszElemName, CNamedElem** ppelem);
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HRESULT Remove(LPCTSTR pszElemName);
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HRESULT ReEnum();
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HRESULT EmptyList();
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HRESULT GetEnum(CNamedElemEnum** ppenum);
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#ifdef DEBUG
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HRESULT InitDebug(LPWSTR pszDebugName);
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void AssertAllElemsRefCount1();
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void AssertNoDuplicate();
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#endif
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public:
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CNamedElemList();
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virtual ~CNamedElemList();
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private:
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HRESULT _Add(LPCTSTR pszElemName, CNamedElem** ppelem);
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HRESULT _GetTail(CElemSlot** ppes);
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HRESULT _GetElemSlot(LPCTSTR pszElemName, CElemSlot** ppes);
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HRESULT _Remove(LPCTSTR pszElemName);
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HRESULT _EmptyList();
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CElemSlot* _GetValidHead();
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private:
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CElemSlot* _pesHead;
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NAMEDELEMCREATEFCT _createfct;
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NAMEDELEMGETFILLENUMFCT _enumfct;
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CRefCountedCritSect* _pcs;
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#ifdef DEBUG
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WCHAR _szDebugName[100];
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#endif
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};
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#endif //_NAMELLST_H_
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