IDragDropTargetFlavorHelper.h

//========================================================================================
// 
// $File$
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// Owner: Dave Burnard
// 
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// 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.
// 
// 
// Interface definition for Drag and Drop target extensibility
// 
//========================================================================================

#ifndef __IDragDropTargetFlavorHelper__
#define __IDragDropTargetFlavorHelper__

#include "DragDropConstants.h"

#include "IDragDropSource.h"
#include "IDragDropTarget.h"
#include "PMRect.h"

class IDragDropTargetFlavorHelper : public IPMUnknown
{
 public:
 enum { kDefaultIID = IID_IDRAGDROPTARGETFLAVORHELPER };

 virtual DragDrop::eHelperType
 GetHelperType() const = 0;

 virtual bool16 HelperWillDoDragTracking() const = 0;

 virtual DragDrop::TargetResponse
 HandleCouldAcceptTypes(const IDragDropTarget*, DataObjectIterator*, const IDragDropSource*, const IDragDropController*) const = 0;
 
 virtual bool16 DoDragEnter_PreflightDragData(IDragDropTarget*, IDragDropController*) = 0;

 virtual void DoDragEnter(IDragDropTarget*) = 0;
 
 virtual void DoDragWithin(IDragDropTarget*, const PMPoint& localPt) = 0;
 
 virtual void DoDragLeave(IDragDropTarget*) = 0;

 virtual ErrorCode ProcessDragDropCommand(IDragDropTarget*, IDragDropController*, DragDrop::eCommandType) = 0;

 virtual PMRect GetDragDataBounds() const = 0; 

 protected:

 virtual DragDrop::TargetResponse
 CouldAcceptTypes(const IDragDropTarget*, DataObjectIterator*, const IDragDropSource*, const IDragDropController*) const = 0;

};

#endif