CDragDropTarget_Extensible.h

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// Owner: Dave Burnard
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// Copyright 1997-2010 Adobe Systems Incorporated. All rights reserved.
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#ifndef __CDragDropTarget_Extensible__
#define __CDragDropTarget_Extensible__

#include "ShuksanID.h"
#include "DragDropID.h"

#include "IEvent.h"
#include "CDragDropTarget.h"
#include "IDropTargetCallback.h"
#include "IDragDropController.h"
#include "IDragDropTargetFlavorHelper.h"

#include "HelperInterface.h"
#include "PMFlavorTypes.h"
#include "CmdUtils.h"

class DataObjectIterator;


class CDragDropTarget_Extensible : public CDragDropTarget
{
 typedef CDragDropTarget inherited;
 
 public:
 CDragDropTarget_Extensible(IPMUnknown *boss);
 virtual ~CDragDropTarget_Extensible();
 
 virtual DragDrop::TargetResponse
 HandleCouldAcceptTypes(DataObjectIterator*, const IDragDropSource*, const IDragDropController*);

 virtual void HandleDoDragEnter();
 virtual bool16 HandleDoDragEnter_PreflightDragData(IDragDropController*); 
 virtual void HandleDoDragWithin(const PMPoint& localPt);
 virtual void HandleDoDragLeave();
 virtual ErrorCode HandleProcessDragDropCommand(IDragDropController*, DragDrop::eCommandType);

 virtual void PrepareTargetForDrag();

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

 // Extensibility
 virtual ServiceID GetFlavorHelperServiceID() const = 0;
 
 IDragDropTargetFlavorHelper* QueryActiveFlavorHelper() const;
 IDragDropTargetFlavorHelper* GetActiveFlavorHelper() const;
 void SetActiveFlavorHelper(IDragDropTargetFlavorHelper*);

 bool16 CanHandleDragData() const {return fCanHandleDragData;}
 void SetCanHandleDragData(bool16 can) {fCanHandleDragData = can;}

 DragDrop::TargetResponse
 Delegate_CouldAcceptTypes(DataObjectIterator*, const IDragDropSource*, const IDragDropController*);
 ErrorCode Delegate_ProcessDragDropCommand(IDragDropController*, DragDrop::eCommandType);

 virtual PMRect HandleGetDragDataBounds() const; 
 
 protected:
 virtual bool16 DoDragEnter_PreflightDragData(IDragDropController*);

 private:
 IDragDropTargetFlavorHelper* fActiveFlavorHelper;
 
 bool16 fCanHandleDragData; // Once we see what the data is, can we still deal with a drop.
 
 
};


#endif