widget/src/beos/nsDragService.h
author Jonas Sicking <jonas@sicking.cc>
Fri, 20 Aug 2010 11:08:43 -0700
changeset 51034 4192ba38ebee43f3f76c31d492ae0f58e07e9d89
parent 482 1b0e34df9fa8707a0eb305120307fa4306f6184d
permissions -rw-r--r--
Backout bugs 586754, 574189, 584611 due to orange. a=backout

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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#ifndef nsDragService_h__
#define nsDragService_h__

#include "nsBaseDragService.h"
#include "nsIDragSessionBeOS.h"
#include <String.h>

class BMessage;

/**
 * Native BeOS DragService wrapper
 */
class nsDragService : public nsBaseDragService, public nsIDragSessionBeOS
{

public:
  nsDragService();
  virtual ~nsDragService();

  //nsISupports
  NS_DECL_ISUPPORTS_INHERITED
  
  //nsIDragService
  NS_IMETHOD InvokeDragSession(nsIDOMNode *aDOMNode,
                               nsISupportsArray * anArrayTransferables,
                               nsIScriptableRegion * aRegion,
                               PRUint32 aActionType);
  NS_IMETHOD StartDragSession();
  NS_IMETHOD EndDragSession(PRBool aDoneDrag);
  
  // nsIDragSession
  NS_IMETHOD GetNumDropItems      (PRUint32 * aNumItems);
  NS_IMETHOD GetData              (nsITransferable * aTransferable,
                                   PRUint32 aItemIndex);
  NS_IMETHOD IsDataFlavorSupported(const char *aDataFlavor, 
                                   PRBool *_retval);

  NS_IMETHOD GetCanDrop(PRBool * aCanDrop);
  NS_IMETHOD SetCanDrop(PRBool aCanDrop);

  // nsIDragSessionBeOS
  NS_IMETHOD UpdateDragMessageIfNeeded(BMessage *aDragMessage);
  NS_IMETHOD TransmitData(BMessage *aNegotiationReply);


protected:
  nsCOMPtr<nsISupportsArray> mSourceDataItems;

private:
  // BeOS specific methods
  void ResetDragInfo(void);
  
  BMessage      *mDragMessage;
  
  //If we want to do image-dragging  
  //BBitmap	*dragBitmap;

  // internal drag identifier for lists
  BString        gMimeListType;
  PRPackedBool         IsDragList(void);
  PRPackedBool         mDragIsList;

  // get the initial drag message for this drag
  BMessage * CreateDragMessage();
  static const char * FlavorToBeMime(const char * flavor);
};

#endif // nsDragService_h__