101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
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// undo.h
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// Undo manager functions
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// Copyright (c)1997-1999 Microsoft Corporation, All Rights Reserved
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#ifndef __UNDO_H__
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#define __UNDO_H__
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// {6501DC80-12A6-11d1-9A15-006097C9B344}
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DEFINE_GUID(UID_TRIEDIT_UNDO,
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0x6501dc80, 0x12a6, 0x11d1, 0x9a, 0x15, 0x0, 0x60, 0x97, 0xc9, 0xb3, 0x44);
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#define cUndoPackMax 1024
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//Add a constant when creating new undoable objects
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#define TRIEDIT_UNDO_DRAG 0
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#define TRIEDIT_UNDO_PACK 1
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//Use this method to add undoable objects to Trident's stack
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HRESULT AddUndoUnit(IUnknown* punkTrident, IOleUndoUnit* pioleUndoUnit);
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class CUndo : public IOleUndoUnit
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{
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protected:
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ULONG m_cRef;
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BOOL m_fUndo;
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public:
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CUndo();
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virtual ~CUndo();
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//IUnknown
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STDMETHOD (QueryInterface)(REFIID riid, LPVOID* ppvObject);
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STDMETHOD_(ULONG, AddRef)(void);
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STDMETHOD_(ULONG, Release)(void);
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//IOleUndoUnit
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STDMETHOD (Do)(IOleUndoManager *pUndoManager) PURE;
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STDMETHOD (GetDescription)(BSTR *pBstr) PURE;
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STDMETHOD (GetUnitType)(CLSID *pClsid, LONG *plID) PURE;
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STDMETHOD (OnNextAdd)(void) PURE;
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};
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class CUndoDrag : public CUndo
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{
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protected:
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IHTMLStyle* m_pihtmlStyle;
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POINT m_ptOrig;
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POINT m_ptMove;
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public:
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CUndoDrag(IHTMLStyle* pihtmlStyle, POINT m_ptOrig, POINT m_ptMove);
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virtual ~CUndoDrag();
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//IOleUndoUnit
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STDMETHOD (Do)(IOleUndoManager *pUndoManager);
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STDMETHOD (GetDescription)(BSTR *pBstr);
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STDMETHOD (GetUnitType)(CLSID *pClsid, LONG *plID);
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STDMETHOD (OnNextAdd)(void);
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};
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class CUndoPackUnit : public CUndo
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{
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protected:
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ULONG m_cRef;
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CComPtr<IOleUndoUnit> m_rgUndo[cUndoPackMax];
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public:
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CUndoPackUnit() {};
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virtual ~CUndoPackUnit(){};
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//IOleUndoUnit
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STDMETHOD (Do)(IOleUndoManager *pUndoManager);
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STDMETHOD (GetDescription)(BSTR *pBstr);
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STDMETHOD (GetUnitType)(CLSID *pClsid, LONG *plID);
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STDMETHOD (OnNextAdd)(void);
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HRESULT PackUndo(ULONG indexStartPacking, IUnknown *pUnkTrident);
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};
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class CUndoPackManager
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{
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protected:
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CComPtr<IUnknown> m_srpUnkTrident;
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ULONG m_indexStartPacking;
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BOOL m_fPacking;
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public:
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CUndoPackManager(IUnknown* pUnkTrident)
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{ m_srpUnkTrident=pUnkTrident;
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m_indexStartPacking=0;
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m_fPacking=FALSE;
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};
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virtual ~CUndoPackManager();
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HRESULT Start(void);
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HRESULT End(void);
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};
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#endif //__UNDO_H__
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