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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *    Josh Aas <josh@mozilla.com>
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 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#ifndef nsClipboard_h_
#define nsClipboard_h_

#include "nsBaseClipboard.h"
#include "nsXPIDLString.h"

#import <Cocoa/Cocoa.h>

class nsITransferable;

class nsClipboard : public nsBaseClipboard
{

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

  // nsIClipboard  
  NS_IMETHOD HasDataMatchingFlavors(const char** aFlavorList, PRUint32 aLength,
                                    PRInt32 aWhichClipboard, PRBool *_retval);

  // Helper methods, used also by nsDragService
  static NSDictionary* PasteboardDictFromTransferable(nsITransferable *aTransferable);
  static PRBool IsStringType(const nsCString& aMIMEType, NSString** aPasteboardType);
  static NSString* WrapHtmlForSystemPasteboard(NSString* aString);
  static nsresult TransferableFromPasteboard(nsITransferable *aTransferable, NSPasteboard *pboard);

protected:

  // impelement the native clipboard behavior
  NS_IMETHOD SetNativeClipboardData(PRInt32 aWhichClipboard);
  NS_IMETHOD GetNativeClipboardData(nsITransferable * aTransferable, PRInt32 aWhichClipboard);
  
private:
  int mChangeCount; // this is always set to the native change count after any clipboard modifications

};

#endif // nsClipboard_h_
