os/ossrv/genericservices/mimerecognitionfw/inc/APMFNDR.H
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution.
     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