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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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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) 1998
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Pierre Phaneuf <pp@ludusdesign.com>
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#ifndef nsCollationMacUC_h_
#define nsCollationMacUC_h_

#include "nsICollation.h"
#include "nsCollation.h"
#include <Carbon/Carbon.h>

// Maximum number of characters for a buffer to remember 
// the generated collation key.
const PRUint32 kCacheSize = 128;
// According to the documentation, the length of the key should typically be
// at least 5 * textLength, but 6* would be safer.
const PRUint32 kCollationValueSizeFactor = 6;

class nsCollationMacUC : public nsICollation {

public: 
  nsCollationMacUC();
  ~nsCollationMacUC(); 

  // nsISupports interface
  NS_DECL_ISUPPORTS

  // nsICollation interface
  NS_DECL_NSICOLLATION

protected:
  nsresult ConvertLocale(nsILocale* aNSLocale, LocaleRef* aMacLocale);
  nsresult StrengthToOptions(const PRInt32 aStrength,
                             UCCollateOptions* aOptions);
  nsresult EnsureCollator(const PRInt32 newStrength);

private:
  bool mInit;
  bool mHasCollator;
  LocaleRef mLocale;
  PRInt32 mLastStrength;
  CollatorRef mCollator;
  void *mBuffer; // temporary buffer to generate collation keys
  PRUint32 mBufferLen; // byte length of buffer
};

#endif  /* nsCollationMacUC_h_ */
