CPMDataObject.h

//========================================================================================
// 
// $File$
// 
// Owner: Dave Burnard
// 
// $Author$
// 
// $DateTime$
// 
// $Revision$
// 
// $Change$
// 
// Copyright 1997-2010 Adobe Systems Incorporated. All rights reserved.
// 
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance 
// with the terms of the Adobe license agreement accompanying it. If you have received
// this file from a source other than Adobe, then your use, modification, or 
// distribution of it requires the prior written permission of Adobe.
// 
// 
// Common implementation interface for data exchange objects
// 
//========================================================================================

#ifndef __CPMDataObject__
#define __CPMDataObject__

#include "IPMDataObject.h"
#include "IFlavorData.h"
#include "ISession.h"
#include "HelperInterface.h"


//========================================================================================
// CLASS CPMDataObject
//========================================================================================

enum eFlavorStreamState
{
 kUnknownState = 0x0000,
 kOpenAndInitialize = 0x0001,
 kOpenedState = 0x0002,
 kCloseAndFinalize = 0x0003
};
 
class CPMDataObject : public IPMDataObject
{
 public:
 CPMDataObject(IPMUnknown *boss);
 virtual ~CPMDataObject();
 
 virtual uint32 GetItemID() const;
 virtual void SetItemID(uint32 id);
#ifdef MACINTOSH
 virtual PasteboardRef GetPasteboardRef() const;
 virtual void SetPasteboardRef(PasteboardRef);
#endif
#ifdef WINDOWS
 virtual IDataObject* GetOLEItem() const;
 virtual void SetOLEItem(IDataObject* obj);
#endif

 virtual DataExchangeResponse FlavorExistsWithPriority(ExternalPMFlavor flavor) const;

 virtual IPMStream* GetStreamForReading(ExternalPMFlavor flavor);
 virtual IPMStream* GetStreamForWriting(ExternalPMFlavor flavor);
 virtual void FinishedWithStream(IPMStream*);

 // Intended use for this item
 virtual int16 GetUsage() const;
 virtual void SetUsage(int16);

 protected:
 virtual IPMStream* QueryForReadingStream();
 virtual IPMStream* QueryForWritingStream();

 virtual bool16 CanReadPromisedFlavor(ExternalPMFlavor flavor);

 protected:
 uint32 fItemReference;
 IPMStream* fReadStream;
 ExternalPMFlavor fReadStreamFlavor;
 IPMStream* fWriteStream;
 ExternalPMFlavor fWriteStreamFlavor;
 int16 fUsage;
 
#ifdef MACINTOSH
 PasteboardRef fPasteboardRef;
#endif
#ifdef WINDOWS
 IDataObject* fCOMDataObject;
#endif

 
};


#endif