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//
// Mike Pinkerton
// Netscape Communications
//
// Native MacOS Clipboard Implementation of nsIClipboard. This contains
// the FE-specific implementations of the pure virtuals in nsBaseClipboard
//

#ifndef nsClipboard_h__
#define nsClipboard_h__

#include "nsBaseClipboard.h"

#include "Types.h"

class nsITransferable;


class nsClipboard : public nsBaseClipboard
{

public:
  nsClipboard();
  virtual ~nsClipboard();

  // nsIClipboard  
  //NS_IMETHOD ForceDataToClipboard();
  NS_IMETHOD  HasDataMatchingFlavors(nsISupportsArray *aFlavorList, PRInt32 aWhichClipboard, PRBool *_retval); 

protected:

  // impelement the native clipboard behavior
  NS_IMETHOD SetNativeClipboardData ( PRInt32 aWhichClipboard );
  NS_IMETHOD GetNativeClipboardData ( nsITransferable * aTransferable, PRInt32 aWhichClipboard );

  // helper to get the data off the clipboard. Caller responsible for deleting
  // |outData| with delete[].
  nsresult GetDataOffClipboard ( ResType inMacFlavor, void** outData, PRInt32* outDataSize ) ;

  // helper to check if the data is really there
  PRBool CheckIfFlavorPresent ( ResType inMacFlavor ) ;

  // actually places data on the clipboard
  nsresult PutOnClipboard ( ResType inFlavor, const void* inData, PRInt32 inLen ) ;

}; // nsClipboard

#endif // nsClipboard_h__