genericservices/mimerecognitionfw/inc/APMFNDR.H
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     1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #if !defined (__APMFNDR_H__)
       
    17 #define __APMFNDR_H__
       
    18 
       
    19 #if !defined(__E32BASE_H__)
       
    20 #include <e32base.h>
       
    21 #endif
       
    22 #if !defined(__F32FILE_H__)
       
    23 #include <f32file.h>
       
    24 #endif
       
    25 #if !defined(__APMREC_H__)
       
    26 #include <apmrec.h>
       
    27 #endif
       
    28 
       
    29 #include <babackup.h>
       
    30 
       
    31 /**
       
    32 @internalComponent
       
    33 */
       
    34 
       
    35 // classes defined
       
    36 class CApaRecognizerDll;
       
    37 
       
    38 #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
       
    39 /** This is a special priority that overrides any user settings. Applications must
       
    40 have EWriteDeviceData to use this priority. If they have not then they will be
       
    41 downgraded to KDataTypePriorityNormal.
       
    42 
       
    43 @publishedPartner
       
    44 @released
       
    45 @see TDataTypeWithPriority */
       
    46 const TInt32 KDataTypePrioritySystem = 0xFFF9;
       
    47 
       
    48 
       
    49 class CApaDataRecognizer : public CBase
       
    50 /**
       
    51 @internalTechnology
       
    52 */
       
    53 	{
       
    54 public:
       
    55 	IMPORT_C TDataRecognitionResult RecognizeL(const TDesC& aName, const TDesC8& aBuffer);
       
    56 	IMPORT_C TDataRecognitionResult RecognizeL(RFile& aFile, TInt aPreferredBufSize);
       
    57 	IMPORT_C TBool RecognizeL(const TDesC& aName, const TDesC8& aBuffer, const TDataType& aDataType);
       
    58 	IMPORT_C TBool RecognizeL(RFile& aFile, TInt aPreferredBufSize, const TDataType& aDataType);
       
    59 	IMPORT_C ~CApaDataRecognizer();
       
    60 	IMPORT_C TInt PreferredBufSize() const;
       
    61 	IMPORT_C void DataTypeL(CDataTypeArray& aArray);
       
    62 	IMPORT_C void UpdateDataTypesL();
       
    63 	IMPORT_C TInt AcceptedConfidence() const;
       
    64 	IMPORT_C void SetAcceptedConfidence(TInt aConfidence);
       
    65 	inline void SetFilePassedByHandle(RFile* aFilePassedByHandle) {iFilePassedByHandle=aFilePassedByHandle;}
       
    66 	inline RFile* FilePassedByHandle() {return iFilePassedByHandle;}
       
    67 protected:
       
    68 	IMPORT_C CApaDataRecognizer(RFs& aFs);
       
    69 	IMPORT_C void AddDataRecognizerTypeL(CApaDataRecognizerType* aDataRecognizerType);
       
    70 	inline void AddDataRecognizerType(CApaDataRecognizerType* aDataRecognizerType);
       
    71 	IMPORT_C TInt RemoveDataRecognizerType(const CApaDataRecognizerType* aDataRecognizerType);
       
    72 	IMPORT_C void DestroyRecognizerList();
       
    73 private:
       
    74 	void AddDataTypeL(const TDataType& aDataType);
       
    75 	TDataRecognitionResult RecognizeL(TDataToRecognize& aDataToRecognize);
       
    76 	TBool RecognizeL(TDataToRecognize& aDataToRecognize, const TDataType& aDataType);
       
    77 	TBool DoRecognize(CApaDataRecognizerType* aDataRecognizerType, TDataToRecognize& aDataToRecognize, const TDataType& aDataType, TInt& aError);
       
    78 protected:
       
    79 	RFs& iFs;
       
    80 	// iMaxBufferSize is mutable to allow modification by PreferredBufSize() which is const.
       
    81 	mutable TInt iMaxBufferSize; 
       
    82 private:
       
    83 	IMPORT_C virtual void CApaDataRecognizer_Reserved_1(); // shouldn't be necessary as the class is @internalTechnology
       
    84 private:
       
    85 	RPointerArray<CApaDataRecognizerType> iDataRecognizerList;
       
    86 	RArray<TDataType> iDataArray;
       
    87 	TInt iAcceptedConfidence;
       
    88 	TDataRecognitionResult iResult;
       
    89 	RFile* iFilePassedByHandle;
       
    90 	};
       
    91 
       
    92 #endif //SYMBIAN_ENABLE_SPLIT_HEADERS
       
    93 
       
    94 class CApaScanningDataRecognizer : public CApaDataRecognizer
       
    95 /**
       
    96 @publishedPartner 
       
    97 @released 
       
    98 */
       
    99 	{
       
   100 public:
       
   101 	class TRecognizer
       
   102 		{
       
   103 	friend class CApaRecognizerDll;
       
   104 	friend class CT_MimeStep;
       
   105 	public:
       
   106 		TRecognizer(HBufC* aName);
       
   107 		inline const TDesC& Name() const;
       
   108 	public:
       
   109 		TUid iUid;
       
   110 		TInt iDrive;
       
   111 		TTime iModified;
       
   112 	private:
       
   113 		inline TRecognizer();
       
   114 		TRecognizer(const TRecognizer&);
       
   115 		TRecognizer operator=(const TRecognizer&);
       
   116 	private:
       
   117 		HBufC* iName;
       
   118 		};
       
   119 	typedef CArrayFixFlat<TRecognizer> CRecognizerArray;
       
   120 
       
   121 private:
       
   122 	class CApaBackupOperationObserver : public CBase, public MBackupOperationObserver
       
   123 		{
       
   124 	public:
       
   125 		CApaBackupOperationObserver(CApaScanningDataRecognizer& aRecognizer);
       
   126 		~CApaBackupOperationObserver();
       
   127 		void RegisterObserverL();
       
   128 
       
   129 		virtual void HandleBackupOperationEventL(const TBackupOperationAttributes& aBackupOperationAttributes);
       
   130 		TInt UpdateCounter() const;
       
   131 		void SetUpdateCounter( TInt aValue );
       
   132 	private:
       
   133 		CBaBackupSessionWrapper* iSession;
       
   134 		CApaScanningDataRecognizer& iRecognizer;
       
   135 		TInt iUpdateCounter;
       
   136 		};
       
   137 	friend class CApaScanningDataRecognizer::CApaBackupOperationObserver;
       
   138 
       
   139 	class CApaScanningDataRecognizerExtra : public CBase
       
   140 		{
       
   141 	private:
       
   142 		CApaBackupOperationObserver* iObserver;
       
   143 		TBool iRecognizersLoaded;
       
   144 		friend class CApaScanningDataRecognizer;
       
   145 		friend class CApaBackupOperationObserver;
       
   146 		};
       
   147 
       
   148 	//
       
   149 public:
       
   150 	IMPORT_C static CApaScanningDataRecognizer* NewL(RFs& aFs);
       
   151 	IMPORT_C static CApaScanningDataRecognizer* NewL(RFs& aFs, TBool aLoadDataRecognizers);
       
   152 	IMPORT_C ~CApaScanningDataRecognizer();
       
   153 	IMPORT_C void ScanForRecognizersL();
       
   154 	IMPORT_C TInt RecognizerCount();
       
   155 	IMPORT_C CRecognizerArray* RecognizerListLC()const;
       
   156 	IMPORT_C const TRecognizer& operator[](TInt aIndex)const;
       
   157 	IMPORT_C TInt UpdateCounter()const;
       
   158 	IMPORT_C void LoadRecognizersL();
       
   159 	IMPORT_C void UnloadRecognizers();
       
   160 
       
   161 protected:
       
   162 	IMPORT_C CApaScanningDataRecognizer(RFs& aFs);
       
   163 	IMPORT_C void ConstructL();
       
   164 private:
       
   165 	void ConstructL(TBool aLoadDataRecognizers);
       
   166 	void ScanDriveL(TInt aDriveNum);
       
   167 	void LoadRecognizerL(const TDesC& aFullName,TUid aUid, const TTime& aTime);
       
   168 	TInt RemoveRecognizer(CApaRecognizerDll* aDll);
       
   169 	void LoadEcomRecognizerL(TDriveUnit& aDrive,TUid aUid);
       
   170 	void ScanForEcomRecognizersL();
       
   171 public:
       
   172 	IMPORT_C void SetEcomRecognizersFromListL(const CRecognizerArray& aList);
       
   173 	IMPORT_C void SetEcomRecognizerL(const TRecognizer& aRecognizer); 
       
   174 private:
       
   175 	friend class CApaBackupObserver;
       
   176 	RPointerArray<CApaRecognizerDll> iRecognizerLib;
       
   177 	CApaScanningDataRecognizerExtra* iExtra;
       
   178 	};
       
   179 
       
   180 //gmahe. This is not moved. Because it is not possible to forward declare 
       
   181 //the nested class used here - CApaScanningDataRecognizer::TRecognizer.
       
   182 
       
   183 class CApaRecognizerDll : public CBase
       
   184 /**
       
   185 @internalTechnology
       
   186 */
       
   187 	{
       
   188 public:
       
   189 	CApaRecognizerDll(HBufC* aName);
       
   190 	~CApaRecognizerDll(); // closes lib and deletes next
       
   191 public:
       
   192 	enum TPresence { ENotPresent, EIsPresent, ESuperseded };
       
   193 public:
       
   194 	RLibrary iLibrary;
       
   195 	CApaRecognizerDll* iNext;
       
   196 	CApaScanningDataRecognizer::TRecognizer iId; // cached so that this data can be accessed from other threads (RLibrary cant be used in this case)
       
   197 	CApaDataRecognizerType* iRec; // not ownership
       
   198 	TPresence iPresent;
       
   199 	TInt iVersion;
       
   200 	};
       
   201 
       
   202 //
       
   203 // inlines
       
   204 //
       
   205 
       
   206 inline const TDesC& CApaScanningDataRecognizer::TRecognizer::Name() const
       
   207 	{
       
   208 	return *iName;
       
   209 	}
       
   210 
       
   211 inline CApaScanningDataRecognizer::TRecognizer::TRecognizer()
       
   212 	{
       
   213 	}
       
   214 
       
   215 #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
       
   216 // Deprecated - Use CApaDataRecognizer::AddDataRecognizerTypeL instead 
       
   217 // as adding a concrete recognizer into the list could leave.
       
   218 /**
       
   219 @deprecated 7.0s
       
   220 */
       
   221 inline void CApaDataRecognizer::AddDataRecognizerType(CApaDataRecognizerType* aDataRecognizerType)
       
   222 	{
       
   223 	AddDataRecognizerTypeL(aDataRecognizerType);
       
   224 	}
       
   225 #endif //SYMBIAN_ENABLE_SPLIT_HEADERS
       
   226 
       
   227 #endif