mtpfws/mtpfw/datatypes/interface/cmtptypeobjectpropdesc.h
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     1 // Copyright (c) 2006-2009 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 /**
       
    17  @file
       
    18  @publishedPartner
       
    19  @released
       
    20 */
       
    21 
       
    22 #ifndef CMTPTYPEOBJECTPROPDESC_H
       
    23 #define CMTPTYPEOBJECTPROPDESC_H
       
    24 
       
    25 #include <e32std.h>
       
    26 #include <mtp/rmtptype.h>
       
    27 #include <mtp/cmtptypecompoundbase.h>
       
    28 #include <mtp/cmtptypeinterdependentpropdesc.h>
       
    29 
       
    30 
       
    31 
       
    32 class CMTPTypeServiceObjPropExtnForm;
       
    33 class CMTPTypeServiceMethodParamExtnForm;
       
    34 /** 
       
    35 Defines the MTP ObjectPropDesc dataset. The ObjectPropDesc dataset describes 
       
    36 an MTP data object property, and is generated in response to a 
       
    37 GetObjectPropDesc operation request.
       
    38 @publishedPartner
       
    39 @released 
       
    40 */ 
       
    41 class CMTPTypeObjectPropDesc : public CMTPTypeCompoundBase
       
    42     {
       
    43     friend class        CMTPTypeServiceObjPropExtnForm;
       
    44     friend class        CMTPTypeServiceMethodParamExtnForm;
       
    45     friend class		CMTPTypeServicePropDesc;
       
    46 public:
       
    47 
       
    48     /**
       
    49     MTP ObjectPropDesc dataset element identifiers.
       
    50     */
       
    51     enum TMTPObjectPropDescElement
       
    52         {
       
    53         /**
       
    54         Property Code (read-only).
       
    55         */
       
    56         EPropertyCode,
       
    57         
       
    58         /**
       
    59         Datatype (read-only).
       
    60         */
       
    61         EDatatype,
       
    62         
       
    63         /**
       
    64         Get/Set.
       
    65         */
       
    66         EGetSet,
       
    67         
       
    68         /**
       
    69         Default Value.
       
    70         */
       
    71         EDefaultValue,
       
    72         
       
    73         /**
       
    74         Group Code.
       
    75         */
       
    76         EGroupCode,
       
    77         
       
    78         /**
       
    79         Form Flag (read-only).
       
    80         */
       
    81         EFormFlag,
       
    82         
       
    83         /**
       
    84         FORM element. This element depends EFormFlag and is absent if EFormFlag 
       
    85         is ENone.
       
    86         */
       
    87         EForm,  
       
    88         
       
    89         /**
       
    90         The number of dataset elements.
       
    91         */
       
    92         ENumElements,
       
    93         };
       
    94 
       
    95     /**
       
    96     MTP ObjectPropDesc dataset Get/Set element values.
       
    97     */
       
    98     enum TMTPObjectPropDescGetSet
       
    99         {
       
   100 
       
   101         /** 
       
   102         Get.
       
   103         */
       
   104         EReadOnly       = 0x00,
       
   105 
       
   106         /** 
       
   107         Get/Set.
       
   108         */
       
   109         EReadWrite      = 0x01
       
   110         };
       
   111 
       
   112     /**
       
   113     MTP ObjectPropDesc dataset FormFlag element values.
       
   114     */
       
   115     enum TMTPObjectPropDescFormFlag
       
   116         {
       
   117         /** 
       
   118         None.
       
   119         */
       
   120         ENone                   = 0x00,
       
   121 
       
   122         /** 
       
   123         Range form.
       
   124         */
       
   125         ERangeForm              = 0x01,
       
   126 
       
   127         /** 
       
   128         Enumeration form.
       
   129         */
       
   130         EEnumerationForm        = 0x02,
       
   131 
       
   132         /** 
       
   133         DateTime form.
       
   134         */
       
   135         EDateTimeForm           = 0x03,
       
   136 
       
   137         /** 
       
   138         Fixed-length Array form.
       
   139         */
       
   140         EFixedLengthArrayForm   = 0x04,
       
   141 
       
   142         /** 
       
   143         Regular Expression form.
       
   144         */
       
   145         ERegularExpressionForm  = 0x05,
       
   146 
       
   147         /** 
       
   148         ByteArray form.
       
   149         */
       
   150         EByteArrayForm          = 0x06,
       
   151 
       
   152         /**
       
   153         * Service Object Property Extension Form
       
   154         */
       
   155         EServiceObjPropExtnForm = 0x81,
       
   156         
       
   157         /**
       
   158         * Service Method Parameter Extension Form
       
   159         */
       
   160         EServiceMethodParamExtnForm = 0x82,
       
   161         
       
   162         /**
       
   163         * Object ID Form
       
   164         */
       
   165         EObjectIDForm           = 0x83,
       
   166         
       
   167         /** 
       
   168         LongString form.
       
   169         */
       
   170         ELongStringForm         = 0xFF,
       
   171         };
       
   172 
       
   173     /**
       
   174     Defines the MTP ObjectPropDesc dataset meta data.
       
   175     */
       
   176     struct TPropertyInfo
       
   177         {
       
   178         /**
       
   179         The property's MTP data type identifier datacode.
       
   180         */
       
   181         TUint           iDataType;
       
   182         
       
   183         /**
       
   184         The FormFlag identifier.
       
   185         */
       
   186         TUint8          iFormFlag;
       
   187         
       
   188         /**
       
   189         The property's Get/Set flag.
       
   190         */
       
   191         TUint8          iGetSet;
       
   192         };
       
   193 
       
   194 public:
       
   195     
       
   196     IMPORT_C static CMTPTypeObjectPropDesc* NewL();
       
   197     
       
   198     IMPORT_C static CMTPTypeObjectPropDesc* NewL(TUint16 aPropertyCode);
       
   199     IMPORT_C static CMTPTypeObjectPropDesc* NewLC(TUint16 aPropertyCode);
       
   200     
       
   201     IMPORT_C static CMTPTypeObjectPropDesc* NewL(TUint16 aPropertyCode, const MMTPType& aForm);
       
   202     IMPORT_C static CMTPTypeObjectPropDesc* NewLC(TUint16 aPropertyCode, const MMTPType& aForm);
       
   203     
       
   204     IMPORT_C static CMTPTypeObjectPropDesc* NewL(TUint16 aPropertyCode, TUint8 aFormFlag, const MMTPType* aForm);
       
   205     IMPORT_C static CMTPTypeObjectPropDesc* NewLC(TUint16 aPropertyCode, TUint8 aFormFlag, const MMTPType* aForm);
       
   206     
       
   207     IMPORT_C static CMTPTypeObjectPropDesc* NewL(TUint16 aPropertyCode, const TPropertyInfo& aInfo, const MMTPType* aForm);
       
   208     IMPORT_C static CMTPTypeObjectPropDesc* NewLC(TUint16 aPropertyCode, const TPropertyInfo& aInfo, const MMTPType* aForm);
       
   209     
       
   210     IMPORT_C virtual ~CMTPTypeObjectPropDesc();   
       
   211      
       
   212 public: // From CMTPTypeCompoundBase
       
   213 
       
   214     IMPORT_C TInt FirstWriteChunk(TPtr8& aChunk);
       
   215     IMPORT_C TInt NextWriteChunk(TPtr8& aChunk);
       
   216     IMPORT_C TUint Type() const;
       
   217     IMPORT_C TBool CommitRequired() const;
       
   218     IMPORT_C MMTPType* CommitChunkL(TPtr8& aChunk);
       
   219 
       
   220 public:
       
   221 
       
   222     static void PropertyInfoL(TUint16 aPropertyCode, TPropertyInfo& aInfo);
       
   223         
       
   224 private: // From CMTPTypeCompoundBase
       
   225     
       
   226     const TElementInfo& ElementInfo(TInt aElementId) const;
       
   227     TBool ReadableElementL(TInt aElementId) const;
       
   228     TBool WriteableElementL(TInt aElementId) const;
       
   229 
       
   230 private:
       
   231 
       
   232     /*
       
   233     Defines the MTP ObjectPropDesc FORM dataset. The FORM dataset is a 
       
   234     component element of the ObjectPropDesc dataset.
       
   235     @internalComponent
       
   236     */ 
       
   237     class RMTPTypeObjectPropDescForm : public RMTPType
       
   238         {
       
   239     public:
       
   240 
       
   241         RMTPTypeObjectPropDescForm();
       
   242         
       
   243         void SetMeta(TUint8 aFormFlag, TUint aDataType);
       
   244         
       
   245     private:
       
   246      
       
   247         MMTPType* CreateL(TUint aDataType);
       
   248         void Destroy(MMTPType* aType);
       
   249         
       
   250     private:
       
   251     
       
   252         /**
       
   253         The FORM dataset's MTP datatype code.
       
   254         */
       
   255         TUint   iDataType;
       
   256         
       
   257         /**
       
   258         The FORM dataset's FormFlag code.
       
   259         */
       
   260         TUint8  iFormFlag;
       
   261         };
       
   262         
       
   263 private:
       
   264 
       
   265     friend MMTPType* CMTPTypeInterdependentProperties::CommitChunkL(TPtr8& aChunk);
       
   266     static CMTPTypeObjectPropDesc* NewLC();
       
   267 
       
   268     CMTPTypeObjectPropDesc();
       
   269     void ConstructL(TUint16 aPropertyCode, const MMTPType* aForm);
       
   270     void ConstructL(TUint16 aPropertyCode, const TPropertyInfo& aInfo, const MMTPType* aForm);
       
   271 
       
   272     TBool HasFormField(TUint8 aFormFlag) const;
       
   273     TInt UpdateWriteSequenceErr(TInt aErr);
       
   274 
       
   275 private: // Owned
       
   276 
       
   277     /**
       
   278     The write data stream states.
       
   279     */
       
   280     enum TWriteSequenceState
       
   281         {
       
   282         /**
       
   283         Data stream is inactive.
       
   284         */
       
   285         EIdle,
       
   286         
       
   287         /**
       
   288         Streaming the first flat data chunk.
       
   289         */
       
   290         EFlat1Chunk,
       
   291         
       
   292         /**
       
   293         Streaming the EDefaultValue data chunk..
       
   294         */
       
   295         EDefaultValueChunk,
       
   296         
       
   297         /**
       
   298         Streaming the second flat data chunk.
       
   299         */
       
   300         EFlat2Chunk,
       
   301         
       
   302         /**
       
   303         Streaming the EForm data chunk.
       
   304         */
       
   305         EFormChunk   
       
   306         };
       
   307         
       
   308     /**
       
   309     Data chunk identifiers.
       
   310     */
       
   311     enum TChunkIds
       
   312         {
       
   313         /**
       
   314         The first flat data chunk ID.
       
   315         */
       
   316         EIdFlat1Chunk,
       
   317         
       
   318         /**
       
   319         The EDefaultValue element data chunk ID.
       
   320         */
       
   321         EIdDefaultValueChunk,
       
   322         
       
   323         /**
       
   324         The second flat data chunk ID.
       
   325         */
       
   326         EIdFlat2Chunk,
       
   327         
       
   328         /**
       
   329         The EForm element data chunk ID.
       
   330         */
       
   331         EIdFormChunk,
       
   332         
       
   333         /**
       
   334         The number of data chunks.
       
   335         */
       
   336         EIdNumChunks
       
   337         };
       
   338 
       
   339     /**
       
   340     The write data stream error state. 
       
   341     */
       
   342     TUint                                           iWriteSequenceErr;
       
   343     
       
   344     /**
       
   345     The write data stream state variable. 
       
   346     */
       
   347     TUint                                           iWriteSequenceState;
       
   348     
       
   349     /**
       
   350     The write data stream completion state. This will be set to EFlat2Chunk for 
       
   351     ObjectPropDesc datasets with an EForm of ENone, otherwise this will be 
       
   352     EFormChunk.
       
   353     */
       
   354     TUint                                           iWriteSequenceCompletionState;
       
   355     
       
   356     /**
       
   357     The dataset element metadata table content.
       
   358     */
       
   359     static const CMTPTypeCompoundBase::TElementInfo iElementMetaData[];
       
   360     
       
   361     /**
       
   362     The dataset element metadata table.
       
   363     */
       
   364     const TFixedArray<TElementInfo, ENumElements>   iElementInfo;
       
   365     
       
   366     /**
       
   367     The initialised flag indicating if construction is completeand that 
       
   368     read-only elements can no longer be modified.
       
   369     */
       
   370     TBool                                           iInitialised;
       
   371     
       
   372     /**
       
   373     The size in bytes of the first flat data chunk.
       
   374     */
       
   375     static const TUint                              KFlat1ChunkSize;
       
   376     
       
   377     /**
       
   378     The size in bytes of the second flat data chunk.
       
   379     */
       
   380     static const TUint                              KFlat2ChunkSize;
       
   381     
       
   382     /**
       
   383     The data chunk count of ObjectPropDesc datasets with an EForm of other than 
       
   384     ENone.
       
   385     */
       
   386     static const TUint                              KNumChunksWithForm;
       
   387     
       
   388     /**
       
   389     The data chunk count of ObjectPropDesc datasets with an EForm of ENone.
       
   390     */
       
   391     static const TUint                              KNumChunksWithoutForm;
       
   392     
       
   393     /**
       
   394     The flat data chunk comprising elements EPropertyCode to EGetSet.
       
   395     */    
       
   396     RMTPTypeCompoundFlatChunk                       iChunkFlat1;
       
   397     
       
   398     /**
       
   399     The EDefaultValue element data chunk.
       
   400     */
       
   401     RMTPType                                        iChunkDefaultValue;
       
   402     
       
   403     /**
       
   404     The flat data chunk comprising elements EGroupCode to EFormFlag.
       
   405     */
       
   406     RMTPTypeCompoundFlatChunk                       iChunkFlat2;
       
   407     
       
   408     /**
       
   409     The EForm element data chunk.
       
   410     */
       
   411     RMTPTypeObjectPropDescForm                      iChunkForm;
       
   412     };
       
   413 
       
   414 /** 
       
   415 Defines the MTP ObjectPropDesc Enumeration FORM dataset. The Enumeration FORM 
       
   416 dataset is a component element of the ObjectPropDesc dataset.
       
   417 @see CMTPTypeObjectPropDesc
       
   418 @publishedPartner
       
   419 @released
       
   420 */ 
       
   421 class CMTPTypeObjectPropDescEnumerationForm : public CMTPTypeCompoundBase
       
   422     {
       
   423         
       
   424 public:
       
   425     
       
   426     IMPORT_C static CMTPTypeObjectPropDescEnumerationForm* NewL(TUint aDataType);
       
   427     IMPORT_C static CMTPTypeObjectPropDescEnumerationForm* NewLC(TUint aDataType);
       
   428     
       
   429     IMPORT_C virtual ~CMTPTypeObjectPropDescEnumerationForm();
       
   430     
       
   431     IMPORT_C void AppendSupportedValueL(const MMTPType& aValue);
       
   432     
       
   433     IMPORT_C TUint16 NumberOfValues() const;
       
   434     IMPORT_C void SupportedValueL(TUint aIndex, MMTPType& aValue) const;
       
   435      
       
   436 public: // From CMTPTypeCompoundBase
       
   437 
       
   438     IMPORT_C TInt FirstWriteChunk(TPtr8& aChunk);
       
   439     IMPORT_C TInt NextWriteChunk(TPtr8& aChunk);
       
   440     IMPORT_C TUint Type() const;
       
   441     IMPORT_C TBool CommitRequired() const;
       
   442     IMPORT_C MMTPType* CommitChunkL(TPtr8& aChunk);
       
   443         
       
   444 private: // From CMTPTypeCompoundBase
       
   445     
       
   446     const TElementInfo& ElementInfo(TInt aElementId) const;
       
   447     TInt ValidateChunkCount() const;
       
   448     
       
   449 private:
       
   450 
       
   451     CMTPTypeObjectPropDescEnumerationForm(TUint aDataType);
       
   452     void ConstructL();
       
   453     
       
   454     void AppendValueChunkL();
       
   455     
       
   456 private:
       
   457 
       
   458     /**
       
   459     The write data stream states.
       
   460     */
       
   461     enum TReadWriteSequenceState
       
   462         {
       
   463         /**
       
   464         Data stream is inactive.
       
   465         */
       
   466         EIdle,
       
   467         
       
   468         /**
       
   469         Data stream is in progress.
       
   470         */
       
   471         EInProgress            
       
   472         };
       
   473 
       
   474     /**
       
   475     The write data stream state variable. 
       
   476     */
       
   477     TUint                                       iWriteSequenceState;
       
   478     
       
   479     /**
       
   480     The NumberOfValues element metadata content.
       
   481     */
       
   482     CMTPTypeCompoundBase::TElementInfo          iInfoNumberOfValues;
       
   483     
       
   484     /**
       
   485     The SupportedValue array elements metadata content. Note that this is 
       
   486     declared mutable to allow state updates while processing a read data stream.
       
   487     */
       
   488     mutable CMTPTypeCompoundBase::TElementInfo  iInfoValue;
       
   489     
       
   490     /**
       
   491     The NumberOfValues element data chunk ID.
       
   492     */
       
   493     static const TUint                          KNumberOfValuesChunk;
       
   494     
       
   495     /**
       
   496     The SupportedValue array elements metadata content. Note that this is 
       
   497     declared mutable to allow state updates while processing a read data stream.
       
   498     */
       
   499     static const TUint                          KValueChunks;
       
   500     
       
   501     /**
       
   502     The NumberOfPropDescs element data chunk.
       
   503     */
       
   504     TMTPTypeUint16                              iChunkNumberOfValues;
       
   505     
       
   506     /**
       
   507     The SupportedValue elements array data chunks.
       
   508     */
       
   509     RArray<RMTPType>                            iChunksValue;
       
   510     };
       
   511 
       
   512 /** 
       
   513 Defines the MTP ObjectPropDesc Range FORM dataset. The Range FORM dataset is a 
       
   514 component element of the ObjectPropDesc dataset.
       
   515 @see CMTPTypeObjectPropDesc
       
   516 @publishedPartner
       
   517 @released
       
   518 */ 
       
   519 class CMTPTypeObjectPropDescRangeForm : public CMTPTypeCompoundBase
       
   520     {
       
   521 public:
       
   522 
       
   523     /**
       
   524     MTP ObjectPropDesc Range FORM element dataset identifiers.
       
   525     */
       
   526     enum TMTPObjectPropDescElement
       
   527         {
       
   528         /**
       
   529         Minimum Value.
       
   530         */
       
   531         EMinimumValue,
       
   532         
       
   533         /**
       
   534         Maximum Value.
       
   535         */
       
   536         EMaximumValue,
       
   537         
       
   538         /**
       
   539         Step Size.
       
   540         */
       
   541         EStepSize,
       
   542 
       
   543         /**
       
   544         The number of dataset elements.
       
   545         */
       
   546         ENumElements,
       
   547         };
       
   548     
       
   549 public:
       
   550     
       
   551     IMPORT_C static CMTPTypeObjectPropDescRangeForm* NewL(TUint aDataType);
       
   552     IMPORT_C static CMTPTypeObjectPropDescRangeForm* NewLC(TUint aDataType);
       
   553     
       
   554     IMPORT_C virtual ~CMTPTypeObjectPropDescRangeForm();  
       
   555      
       
   556 public: // From CMTPTypeCompoundBase
       
   557 
       
   558     IMPORT_C TUint Type() const;
       
   559         
       
   560 private: // From CMTPTypeCompoundBase
       
   561     
       
   562     const TElementInfo& ElementInfo(TInt aElementId) const;
       
   563     
       
   564 private:
       
   565 
       
   566     CMTPTypeObjectPropDescRangeForm(TUint aDataType);
       
   567     void ConstructL();
       
   568     
       
   569 private:
       
   570 
       
   571     /**
       
   572     The element metadata content.
       
   573     */
       
   574     mutable CMTPTypeCompoundBase::TElementInfo  iInfoBuf;
       
   575 
       
   576     /**
       
   577     The property's MTP data type identifier datacode.
       
   578     */
       
   579     TUint                                       iDataType;
       
   580     
       
   581     /**
       
   582     The element data chunks.
       
   583     */
       
   584     RArray<RMTPType>                            iChunks;
       
   585     };
       
   586 
       
   587 #endif // CMTPTYPEOBJECTPROPDESC_H