CDragDropTarget.h

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

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

#include "IEvent.h"
#include "IDragDropTarget.h"
#include "IDropTargetCallback.h"
#include "IDragDropController.h"
#include "HelperInterface.h"
#include "PMFlavorTypes.h"
#include "CmdUtils.h"

class DataObjectIterator;



class CDragDropTarget : public IDragDropTarget
{
 typedef IDragDropTarget inherited;
 typedef K2Vector<IDropTargetCallback*> DropTargetCallbackList;

 public:
 CDragDropTarget(IPMUnknown *boss);
 virtual ~CDragDropTarget();
 
 virtual DragDrop::TargetResponse
 HandleCouldAcceptTypes(DataObjectIterator*, const IDragDropSource*, const IDragDropController*);
 virtual void HandleDoDragEnter();
 virtual void HandleDoDragWithin(const PMPoint& localPt);
 virtual void HandleDoDragLeave();
 virtual ErrorCode HandleProcessDragDropCommand(IDragDropController*, DragDrop::eCommandType);
 
 virtual SysWireframe DoMakeDropHiliteRegion() const;

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

 virtual IDataBase* GetTargetDataBase() const;

 bool16 SameAsDragSource(const IDragDropSource* dragSource) const;

 bool16 AffectsSameDataAsDragSource(const IDragDropSource* dragSource) const;

 virtual bool16 HitTest_OutsideBounds(const SysPoint&) const;

 virtual IDragDropTarget* QueryInternalDropTarget(const SysPoint& windowPoint, 
 PMPoint& localPoint, 
 DataObjectIterator* dataIter, 
 const IDragDropSource* iSource, 
 const IDragDropController* iController);
 virtual PMMatrix GetInternalTransform() const;
 virtual void SetInternalTransform(PMMatrix);
 
 virtual void RegisterTargetCallback(IDropTargetCallback*);
 virtual void ReleaseTargetCallback(IDropTargetCallback*);
 
 virtual void SetActiveContext();
 virtual void ResetActiveContext();

 virtual void SetDocument(IDocument*);

 virtual void DrawTargetOutline();

 virtual bool16 IsTargetModifiable() const; 

 protected:
 virtual void PrepareTargetForDrag();

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

 // Tracking the drag as it enters, drags, and leaves this target
 virtual void DoDragEnter();
 virtual void DoDragWithin(const PMPoint& localPt);
 virtual void DoDragLeave();
 
 virtual void NotifyTargetCallbacks(IDropTargetCallback::eCallbackState state, 
 const PMPoint& localPt);
 
 virtual PMRect HandleGetDragDataBounds() const; // 
 virtual PMRect GetDragDataBounds() const;
 
 protected:
 const DragDrop::TargetResponse& GetCachedResponse() const {return fCachedResponse;}
 mutable DragDrop::TargetResponse fCachedResponse;
 
 DropTargetCallbackList* GetTargetCallbackList() {return &fTargetCallbackList;}

 private:
 PMMatrix fInternalTransform;
 DropTargetCallbackList fTargetCallbackList;
 
 
};


#endif