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nsCollationMacUC.h
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00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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00010  * Software distributed under the License is distributed on an "AS IS" basis,
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00015  * The Original Code is mozilla.org code.
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00019  * Portions created by the Initial Developer are Copyright (C) 1998
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00022  * Contributor(s):
00023  *   Pierre Phaneuf <pp@ludusdesign.com>
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00025  * Alternatively, the contents of this file may be used under the terms of
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00038 
00039 #ifndef nsCollationMacUC_h__
00040 #define nsCollationMacUC_h__
00041 
00042 #include "nsICollation.h"
00043 #include "nsCollation.h"  // static library
00044 #include <MacLocales.h>
00045 #include <UnicodeUtilities.h>
00046 
00047 // Maximum number of characters for a buffer to remember 
00048 // the generated collation key.
00049 const PRUint32 kCacheSize = 128;
00050 // According to the documentation, the length of the key should typically be
00051 // at least 5 * textLength
00052 const PRUint32 kCollationValueSizeFactor = 5;
00053 
00054 class nsCollationMacUC : public nsICollation {
00055 
00056 public: 
00057   nsCollationMacUC();
00058   ~nsCollationMacUC(); 
00059 
00060   // nsISupports interface
00061   NS_DECL_ISUPPORTS
00062 
00063   // nsICollation interface
00064   NS_DECL_NSICOLLATION
00065 
00066 protected:
00067   nsresult ConvertLocale(nsILocale* aNSLocale, LocaleRef* aMacLocale);
00068   nsresult StrengthToOptions(const PRInt32 aStrength,
00069                              UCCollateOptions* aOptions);
00070   nsresult EnsureCollator(const PRInt32 newStrength);
00071 
00072 private:
00073   PRPackedBool mInit;
00074   PRPackedBool mHasCollator;
00075   LocaleRef mLocale;
00076   PRInt32 mLastStrength;
00077   CollatorRef mCollator;
00078   void *mBuffer; // temporary buffer to generate collation keys
00079   PRUint32 mBufferLen; // byte length of buffer
00080 };
00081 
00082 #endif  /* nsCollationMacUC_h__ */