PECengine/CoreUtilsLib2/Src/CPEngSessionSlotState.cpp
branchRCL_3
changeset 17 a941bc465d9f
parent 0 094583676ce7
equal deleted inserted replaced
16:6ca72c0fe49a 17:a941bc465d9f
       
     1 /*
       
     2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  NWSessionSlotID implementation.
       
    15 *
       
    16 */
       
    17 
       
    18 // INCLUDE FILES
       
    19 #include    "CPEngSessionSlotState.h"
       
    20 #include    "CPEngSessionSlotId.h"
       
    21 #include    "CPEngSessionSlotEvent.h"
       
    22 #include    "PEngCoreUtilsTools.h"
       
    23 
       
    24 
       
    25 
       
    26 // CONSTANTS
       
    27 
       
    28 /**
       
    29  * Default array granurality.
       
    30  */
       
    31 const TInt KArrayGranularity = 5;
       
    32 
       
    33 
       
    34 /**
       
    35  * Version of the session state storage format.
       
    36  */
       
    37 const TInt KSessionStateVersion = 0x00000001;
       
    38 
       
    39 
       
    40 
       
    41 
       
    42 // ====================== LOCAL FUNCTIONS ======================================
       
    43 
       
    44 //LOCAL PANIC FUNCTIONS
       
    45 namespace
       
    46     {
       
    47     //SessionSlotState panic
       
    48     _LIT( KPEngSessionSlotStatePanic, "SessSlotState" );
       
    49 
       
    50     //SessionSlotState panic reasons
       
    51     enum TPEngSessionSlotStatePanicReasons
       
    52         {
       
    53         EPEngNoSessionSlotId = 1,
       
    54         EPEngSessionUpdateInconsistent = 2,
       
    55         EPEngSessionOpenAppNotRegistered = 3,
       
    56         EPEngSessionCloseAppNotRegistered = 4,
       
    57         EPEngSessionOpenGlobalStateNotCorrect = 5,
       
    58         EPEngSessionHasActiveAppsAtClosedState = 6
       
    59         };
       
    60 
       
    61     //SessionSlotState panic function
       
    62     void PanicSessionSlotState( TPEngSessionSlotStatePanicReasons aPanicReason )
       
    63         {
       
    64         User::Panic( KPEngSessionSlotStatePanic, aPanicReason );
       
    65         }
       
    66     }
       
    67 
       
    68 
       
    69 // -----------------------------------------------------------------------------
       
    70 // DesArrayExternalizeSize()
       
    71 // -----------------------------------------------------------------------------
       
    72 TInt DesArrayExternalizeSize( const MDesC16Array& aArray )
       
    73     {
       
    74     TInt size = 4; //array count
       
    75 
       
    76     const TInt count( aArray.MdcaCount() );
       
    77     for ( TInt ix = 0 ; ix < count ; ix++ )
       
    78         {
       
    79         //Below: descriptor length is streamed as 32 bit integer ==> 4 bytes
       
    80         size += aArray.MdcaPoint( ix ).Size() + 4;
       
    81         }
       
    82     return size;
       
    83     }
       
    84 
       
    85 
       
    86 
       
    87 // -----------------------------------------------------------------------------
       
    88 // ExternalizeDesArrayWithSkipL()
       
    89 // -----------------------------------------------------------------------------
       
    90 void ExternalizeDesArrayWithSkipL( const MDesC16Array& aArray,
       
    91                                    TInt aIxToSkip,
       
    92                                    RWriteStream& aStream )
       
    93     {
       
    94     TInt count ( aArray.MdcaCount() );
       
    95     aStream.WriteInt32L( count - ( aIxToSkip == KErrNotFound ? 0 : 1 ) );
       
    96 
       
    97     for ( TInt ix = 0 ; ix < count ; ix++ )
       
    98         {
       
    99         if ( ix == aIxToSkip )
       
   100             {
       
   101             continue;
       
   102             }
       
   103 
       
   104         TPtrC16 data( aArray.MdcaPoint( ix ) );
       
   105         aStream.WriteInt32L( data.Length() );
       
   106         aStream.WriteL( data );
       
   107         }
       
   108     }
       
   109 
       
   110 
       
   111 // -----------------------------------------------------------------------------
       
   112 // InternalizeDesArrayL()
       
   113 // -----------------------------------------------------------------------------
       
   114 void InternalizeDesArrayL( CDesCArray& aArray,
       
   115                            RReadStream& aStream )
       
   116     {
       
   117     aArray.Reset();
       
   118 
       
   119     TInt count = aStream.ReadInt32L();
       
   120     for ( TInt ii = 0; ii < count; ii++ )
       
   121         {
       
   122         TInt length = aStream.ReadInt32L();
       
   123         HBufC* buffer = HBufC::NewLC( length );
       
   124         TPtr ptr( buffer->Des() );
       
   125         aStream.ReadL( ptr, length );
       
   126         aArray.AppendL( *buffer );
       
   127         CleanupStack::PopAndDestroy( buffer );
       
   128         }
       
   129     }
       
   130 
       
   131 
       
   132 
       
   133 
       
   134 // ====================== MEMBER FUNCTIONS ======================================
       
   135 
       
   136 // -----------------------------------------------------------------------------
       
   137 // CPEngSessionSlotState::CPEngSessionSlotState
       
   138 // C++ constructor can NOT contain any code, that
       
   139 // might leave.
       
   140 // -----------------------------------------------------------------------------
       
   141 //
       
   142 CPEngSessionSlotState::CPEngSessionSlotState()
       
   143         : iState( EPEngNWPresenceSessionClosed ),
       
   144         iActiveApps( KArrayGranularity ),
       
   145         iRegisteredApps( KArrayGranularity ),
       
   146         iActiveAdded( KErrNotFound ),
       
   147         iActiveRemoved( KErrNotFound ),
       
   148         iRegAdded( KErrNotFound ),
       
   149         iRegRemoved( KErrNotFound )
       
   150     {
       
   151     }
       
   152 
       
   153 
       
   154 // -----------------------------------------------------------------------------
       
   155 // CPEngSessionSlotState::NewL()
       
   156 // Two-phased constructor.
       
   157 // -----------------------------------------------------------------------------
       
   158 //
       
   159 EXPORT_C CPEngSessionSlotState* CPEngSessionSlotState::NewL()
       
   160     {
       
   161     CPEngSessionSlotState* self = new ( ELeave ) CPEngSessionSlotState();
       
   162     return self;
       
   163     }
       
   164 
       
   165 
       
   166 // -----------------------------------------------------------------------------
       
   167 // CPEngSessionSlotState::NewLC()
       
   168 // Two-phased constructor.
       
   169 // -----------------------------------------------------------------------------
       
   170 //
       
   171 EXPORT_C CPEngSessionSlotState* CPEngSessionSlotState::NewLC()
       
   172     {
       
   173     CPEngSessionSlotState* self = new ( ELeave ) CPEngSessionSlotState();
       
   174     CleanupStack::PushL( self );
       
   175     return self;
       
   176     }
       
   177 
       
   178 
       
   179 // Destructor
       
   180 CPEngSessionSlotState::~CPEngSessionSlotState()
       
   181     {
       
   182     if ( iSessionIdOwned )
       
   183         {
       
   184         delete iSessionId;
       
   185         }
       
   186 
       
   187     iActiveApps.Reset();
       
   188     iRegisteredApps.Reset();
       
   189     }
       
   190 
       
   191 
       
   192 
       
   193 // =============================================================================
       
   194 // =============== Session ID support ==========================================
       
   195 // =============================================================================
       
   196 
       
   197 // -----------------------------------------------------------------------------
       
   198 // CPEngSessionSlotState::SessionSlotIndentification()
       
   199 // Session Slot ID identification
       
   200 // -----------------------------------------------------------------------------
       
   201 //
       
   202 EXPORT_C CPEngSessionSlotId& CPEngSessionSlotState::SessionSlotId() const
       
   203     {
       
   204     __ASSERT_ALWAYS( iSessionId, PanicSessionSlotState( EPEngNoSessionSlotId ) );
       
   205     return *iSessionId;
       
   206     }
       
   207 
       
   208 
       
   209 
       
   210 // =============================================================================
       
   211 // =============== State identificationst ======================================
       
   212 // =============================================================================
       
   213 
       
   214 // -----------------------------------------------------------------------------
       
   215 // CPEngSessionSlotState::SessionSlotState()
       
   216 // Session slot Online state
       
   217 // -----------------------------------------------------------------------------
       
   218 //
       
   219 EXPORT_C TPEngNWSessionSlotState CPEngSessionSlotState::SessionSlotState() const
       
   220     {
       
   221     return iState;
       
   222     }
       
   223 
       
   224 
       
   225 // -----------------------------------------------------------------------------
       
   226 // CPEngSessionSlotState::RegisteredApplications()
       
   227 // Gets list of Application IDs which are active with this
       
   228 // -----------------------------------------------------------------------------
       
   229 //
       
   230 EXPORT_C const MDesC16Array& CPEngSessionSlotState::RegisteredApplications() const
       
   231     {
       
   232     return iRegisteredApps;
       
   233     }
       
   234 
       
   235 
       
   236 // -----------------------------------------------------------------------------
       
   237 // CPEngSessionSlotState::ActiveApplications()
       
   238 // Gets list of Application IDs which are registered to this
       
   239 // -----------------------------------------------------------------------------
       
   240 //
       
   241 EXPORT_C const MDesC16Array& CPEngSessionSlotState::ActiveApplications() const
       
   242     {
       
   243     return iActiveApps;
       
   244     }
       
   245 
       
   246 
       
   247 // -----------------------------------------------------------------------------
       
   248 // CPEngSessionSlotState::AppState()
       
   249 // Gets state of the application in the session state
       
   250 // -----------------------------------------------------------------------------
       
   251 //
       
   252 EXPORT_C TPEngNWSessionSlotState CPEngSessionSlotState::AppState(
       
   253     const TDesC& aAppId ) const
       
   254     {
       
   255     TInt pos( KErrNotFound );
       
   256     if ( KErrNone == iActiveApps.FindIsq( aAppId, pos ) )
       
   257         {
       
   258         return EPEngNWPresenceSessionOpen;
       
   259         }
       
   260 
       
   261     return EPEngNWPresenceSessionClosed;
       
   262     }
       
   263 
       
   264 
       
   265 // -----------------------------------------------------------------------------
       
   266 // CPEngSessionSlotState::ApplicationRegisteredL()
       
   267 // Check if application is registered to this session slot
       
   268 // -----------------------------------------------------------------------------
       
   269 //
       
   270 EXPORT_C void CPEngSessionSlotState::ApplicationRegisteredL(
       
   271     const TDesC& aAppId ) const
       
   272     {
       
   273     __ASSERT_ALWAYS( ApplicationRegistered( aAppId ), User::Leave( KErrNotFound ) );
       
   274     }
       
   275 
       
   276 
       
   277 
       
   278 
       
   279 // =============================================================================
       
   280 // =============== identification management ====================================
       
   281 // =============================================================================
       
   282 
       
   283 // -----------------------------------------------------------------------------
       
   284 // CPEngSessionSlotState::SetSessionStlotId()
       
   285 // Set Session slot ID class
       
   286 // -----------------------------------------------------------------------------
       
   287 //
       
   288 EXPORT_C void CPEngSessionSlotState::SetSessionSlotId(
       
   289     CPEngSessionSlotId& aSlotId,
       
   290     TBool aOwnershipTransfered /* EFalse */ )
       
   291     {
       
   292     if ( iSessionId && iSessionIdOwned )
       
   293         {
       
   294         delete iSessionId;
       
   295         }
       
   296 
       
   297     iSessionId = &aSlotId;
       
   298     iSessionIdOwned = aOwnershipTransfered;
       
   299     }
       
   300 
       
   301 
       
   302 // -----------------------------------------------------------------------------
       
   303 // CPEngSessionSlotState::SetSessionSlotStateClosed()
       
   304 // Set state of the session slot closed
       
   305 // -----------------------------------------------------------------------------
       
   306 //
       
   307 EXPORT_C void CPEngSessionSlotState::SetSessionSlotStateClosed()
       
   308     {
       
   309     iState = EPEngNWPresenceSessionClosed;
       
   310     iActiveApps.Reset();
       
   311     iActiveAdded = KErrNotFound;
       
   312     iActiveRemoved = KErrNotFound;
       
   313     }
       
   314 
       
   315 
       
   316 // -----------------------------------------------------------------------------
       
   317 // CPEngSessionSlotState::UpdateStateL()
       
   318 // Update Session slot state based on the event
       
   319 // -----------------------------------------------------------------------------
       
   320 //
       
   321 EXPORT_C TBool CPEngSessionSlotState::UpdateStateL(
       
   322     const CPEngSessionSlotEvent& aSessEvent )
       
   323     {
       
   324     //Precheck - SlotId must match
       
   325     __ASSERT_ALWAYS( aSessEvent.SessionSlotIndentification().Match( SessionSlotId() ) == KErrNone,
       
   326                      PanicSessionSlotState( EPEngSessionUpdateInconsistent ) );
       
   327 
       
   328 
       
   329     // first commit last update
       
   330     CommitLastUpdate();
       
   331 
       
   332     // set state in state from the event
       
   333     iState = aSessEvent.GlobSessSltState();
       
   334 
       
   335 
       
   336     // Check what has happened
       
   337     TBool permanentStoreNeeded = EFalse;
       
   338     switch ( aSessEvent.Event() )
       
   339         {
       
   340         case EPEngEventNWSessionSlotCreated:
       
   341             {
       
   342             // New Application Id was registered to the session
       
   343             AddRegisteredAppIdL( aSessEvent.ApplicationId() );
       
   344 
       
   345             // this needs to be store to permanent
       
   346             permanentStoreNeeded = ETrue;
       
   347             break;
       
   348             }
       
   349 
       
   350 
       
   351         case EPEngEventNWSessionSlotRemoved:
       
   352             {
       
   353             // Application Id was removed from the session slot
       
   354             RemoveRegisteredAppIdL( aSessEvent.ApplicationId() );
       
   355 
       
   356             // this needs to be store to permanent
       
   357             permanentStoreNeeded = ETrue;
       
   358             break;
       
   359             }
       
   360 
       
   361 
       
   362         case EPEngEventAppNWPresenceSessionOpened:
       
   363             {
       
   364             // New Application Id has activated session
       
   365             __ASSERT_ALWAYS( ApplicationRegistered( aSessEvent.ApplicationId() ),
       
   366                              PanicSessionSlotState( EPEngSessionOpenAppNotRegistered ) );
       
   367 
       
   368             __ASSERT_ALWAYS( iState  == EPEngNWPresenceSessionOpen,
       
   369                              PanicSessionSlotState( EPEngSessionOpenGlobalStateNotCorrect ) );
       
   370 
       
   371             AddActiveAppIdL( aSessEvent.ApplicationId() );
       
   372             break;
       
   373             }
       
   374 
       
   375 
       
   376         case EPEngEventAppNWPresenceSessionClosed:
       
   377         case EPEngEventNWSessionClosedByServer:
       
   378             {
       
   379             // Application Id has closed the session
       
   380             // Closing event does not have to have any App Id..
       
   381             RemoveActiveAppId( aSessEvent.ApplicationId() );
       
   382             break;
       
   383             }
       
   384 
       
   385 
       
   386         case EPEngEventNWSessionSlotChanged:
       
   387         case EPEngEventNWSessionTransport:
       
   388         default:
       
   389             {
       
   390             // default does nothing
       
   391             break;
       
   392             }
       
   393         }
       
   394 
       
   395 
       
   396     return permanentStoreNeeded;
       
   397     }
       
   398 
       
   399 
       
   400 // -----------------------------------------------------------------------------
       
   401 // CPEngSessionSlotState::UpdateAndCommitStateL()
       
   402 // Update Session slot state based on the event and commit the state
       
   403 // -----------------------------------------------------------------------------
       
   404 //
       
   405 EXPORT_C TBool CPEngSessionSlotState::UpdateAndCommitStateL(
       
   406     const CPEngSessionSlotEvent& aSessEvent )
       
   407     {
       
   408     TBool storeNeed( UpdateStateL( aSessEvent ) );
       
   409     CommitLastUpdate();
       
   410     return storeNeed;
       
   411     }
       
   412 
       
   413 
       
   414 // -----------------------------------------------------------------------------
       
   415 // CPEngSessionSlotState::RollBackLastUpdate()
       
   416 // Rollback last change
       
   417 // -----------------------------------------------------------------------------
       
   418 //
       
   419 EXPORT_C void CPEngSessionSlotState::RollBackLastUpdate()
       
   420     {
       
   421     if ( iActiveAdded != KErrNotFound )
       
   422         {
       
   423         iActiveApps.Delete( iActiveAdded );
       
   424         iActiveAdded = KErrNotFound;
       
   425         }
       
   426 
       
   427     iActiveRemoved = KErrNotFound;
       
   428     if ( iRegAdded != KErrNotFound )
       
   429         {
       
   430         iRegisteredApps.Delete( iRegAdded );
       
   431         iRegAdded = KErrNotFound;
       
   432         }
       
   433     iRegRemoved = KErrNotFound;
       
   434     }
       
   435 
       
   436 
       
   437 // -----------------------------------------------------------------------------
       
   438 // CPEngSessionSlotState::CommitLastUpdate()
       
   439 // Commit last change
       
   440 // -----------------------------------------------------------------------------
       
   441 //
       
   442 EXPORT_C void CPEngSessionSlotState::CommitLastUpdate()
       
   443     {
       
   444     iActiveAdded = KErrNotFound;
       
   445     iRegAdded = KErrNotFound;
       
   446     if ( iActiveRemoved != KErrNotFound )
       
   447         {
       
   448         iActiveApps.Delete( iActiveRemoved );
       
   449         iActiveRemoved = KErrNotFound;
       
   450         }
       
   451     if ( iRegRemoved != KErrNotFound )
       
   452         {
       
   453         iRegisteredApps.Delete( iRegRemoved );
       
   454         iRegRemoved = KErrNotFound;
       
   455         }
       
   456     }
       
   457 
       
   458 
       
   459 
       
   460 // =============================================================================
       
   461 // =============== Export, Import Functions ====================================
       
   462 // =============================================================================
       
   463 
       
   464 // -----------------------------------------------------------------------------
       
   465 // CPEngSessionSlotState::InternalizeL()
       
   466 // Internalize Session Slot State from stream
       
   467 // -----------------------------------------------------------------------------
       
   468 //
       
   469 EXPORT_C void CPEngSessionSlotState::InternalizeL( RReadStream& aStream,
       
   470                                                    TPEngDataSelection aSelection )
       
   471     {
       
   472     if ( EPermanentData & aSelection )
       
   473         {
       
   474         TInt version( aStream.ReadInt32L() );
       
   475         if ( version != KSessionStateVersion )
       
   476             {
       
   477             User::Leave( KErrCorrupt );
       
   478             }
       
   479         }
       
   480 
       
   481 
       
   482     // shall we unpack identification
       
   483     if ( EIdentification & aSelection )
       
   484         {
       
   485         CPEngSessionSlotId* newId = CPEngSessionSlotId::NewLC();
       
   486         newId->InternalizeL( aStream );
       
   487         SetSessionSlotId( *newId, ETrue );
       
   488         CleanupStack::Pop( newId );
       
   489         }
       
   490 
       
   491 
       
   492     // shall we unpack Registered application IDs
       
   493     if ( ERegistredIDs & aSelection )
       
   494         {
       
   495         InternalizeDesArrayL( iRegisteredApps, aStream );
       
   496         }
       
   497 
       
   498 
       
   499     // shall we unpack State specific data
       
   500     if ( EStateSpecific & aSelection )
       
   501         {
       
   502         iState = static_cast<TPEngNWSessionSlotState>( aStream.ReadInt32L() );
       
   503         InternalizeDesArrayL( iActiveApps, aStream );
       
   504         }
       
   505 
       
   506     }
       
   507 
       
   508 
       
   509 
       
   510 // -----------------------------------------------------------------------------
       
   511 // CPEngSessionSlotState::ExternalizeL()
       
   512 // Externalize Session Slot state to stream
       
   513 // -----------------------------------------------------------------------------
       
   514 //
       
   515 
       
   516 EXPORT_C void CPEngSessionSlotState::ExternalizeL( RWriteStream& aStream,
       
   517                                                    TPEngDataSelection aSelection ) const
       
   518     {
       
   519     if ( EPermanentData & aSelection )
       
   520         {
       
   521         // pack store version
       
   522         aStream.WriteInt32L( KSessionStateVersion );
       
   523         }
       
   524 
       
   525 
       
   526     // shall we pack identification
       
   527     if ( EIdentification & aSelection )
       
   528         {
       
   529         SessionSlotId().ExternalizeL( aStream );
       
   530         }
       
   531 
       
   532 
       
   533     // shall we pack Registered application IDs
       
   534     if ( ERegistredIDs & aSelection )
       
   535         {
       
   536         ExternalizeDesArrayWithSkipL( iRegisteredApps, iRegRemoved, aStream );
       
   537         }
       
   538 
       
   539 
       
   540     // shall we pack State specific data
       
   541     if ( EStateSpecific & aSelection )
       
   542         {
       
   543         aStream.WriteInt32L( iState );
       
   544         ExternalizeDesArrayWithSkipL( iActiveApps, iActiveRemoved, aStream );
       
   545         }
       
   546     }
       
   547 
       
   548 
       
   549 // -----------------------------------------------------------------------------
       
   550 // CPEngSessionSlotState::Size()
       
   551 // Size of the buffer needed for externalization
       
   552 // -----------------------------------------------------------------------------
       
   553 //
       
   554 EXPORT_C TInt CPEngSessionSlotState::Size( TPEngDataSelection aSelection ) const
       
   555     {
       
   556     TInt size = 0;
       
   557 
       
   558     if ( EPermanentData & aSelection )
       
   559         {
       
   560         size += 4; //KSessionStateVersion
       
   561         }
       
   562 
       
   563 
       
   564     if ( EIdentification & aSelection )
       
   565         {
       
   566         size += SessionSlotId().Size();
       
   567         }
       
   568 
       
   569 
       
   570     if ( EStateSpecific & aSelection )
       
   571         {
       
   572         size += 4; //iState
       
   573         size += DesArrayExternalizeSize( iActiveApps );
       
   574         }
       
   575 
       
   576 
       
   577     if ( ERegistredIDs & aSelection )
       
   578         {
       
   579         size += DesArrayExternalizeSize( iRegisteredApps );
       
   580         }
       
   581 
       
   582 
       
   583     return size;
       
   584     }
       
   585 
       
   586 
       
   587 
       
   588 // -----------------------------------------------------------------------------
       
   589 // CPEngSessionSlotState::PackDataLC()
       
   590 // Pack Session Slot state to the the des buffer
       
   591 // -----------------------------------------------------------------------------
       
   592 //
       
   593 EXPORT_C HBufC8* CPEngSessionSlotState::PackDataLC(
       
   594     TPEngDataSelection aSelection ) const
       
   595     {
       
   596     HBufC8* packBuffer = HBufC8::NewLC( Size( aSelection ) );
       
   597     TPtr8 pack( packBuffer->Des() );
       
   598 
       
   599     RDesWriteStream ws;
       
   600     ws.Open( pack );                    // CSI: 65 #
       
   601     CleanupClosePushL( ws );
       
   602 
       
   603     ExternalizeL( ws, aSelection );
       
   604 
       
   605     ws.CommitL();
       
   606     CleanupStack::PopAndDestroy(); //ws
       
   607 
       
   608     packBuffer = packBuffer->ReAllocL( packBuffer->Length() );
       
   609     CleanupStack::Pop();
       
   610     CleanupStack::PushL( packBuffer ); //Due realloc
       
   611 
       
   612     return packBuffer;
       
   613     }
       
   614 
       
   615 // -----------------------------------------------------------------------------
       
   616 // CPEngSessionSlotState::PackDataLC()
       
   617 // Pack Session Slot state to the the des buffer
       
   618 // -----------------------------------------------------------------------------
       
   619 //
       
   620 EXPORT_C void CPEngSessionSlotState::PackDataL(
       
   621     TPEngDataSelection aSelection,
       
   622     RBuf8& aBuf ) const
       
   623     {
       
   624     TInt size( Size( aSelection ) );
       
   625     if ( aBuf.MaxSize() < size )
       
   626         {
       
   627         aBuf.ReAllocL( size );
       
   628         }
       
   629     aBuf.Zero();
       
   630 
       
   631     RDesWriteStream ws;
       
   632     ws.Open( aBuf );                    // CSI: 65 #
       
   633     CleanupClosePushL( ws );
       
   634 
       
   635     ExternalizeL( ws, aSelection );
       
   636 
       
   637     ws.CommitL();
       
   638     CleanupStack::PopAndDestroy(); //ws
       
   639     }
       
   640 
       
   641 // -----------------------------------------------------------------------------
       
   642 // CPEngSessionSlotState::UnpackDataL()
       
   643 // Unpack Session Slot state from the passed Descriptor
       
   644 // -----------------------------------------------------------------------------
       
   645 //
       
   646 EXPORT_C void CPEngSessionSlotState::UnpackDataL(
       
   647     const TDesC8& aDes,
       
   648     TPEngDataSelection aSelection )
       
   649     {
       
   650     RDesReadStream rs;
       
   651     rs.Open( aDes );                    // CSI: 65 #
       
   652     CleanupClosePushL( rs );
       
   653     InternalizeL( rs, aSelection );
       
   654     CleanupStack::PopAndDestroy(); // rs
       
   655     }
       
   656 
       
   657 
       
   658 
       
   659 // =============================================================================
       
   660 // ============== New private helping functions of the class ===================
       
   661 // =============================================================================
       
   662 
       
   663 
       
   664 // -----------------------------------------------------------------------------
       
   665 // CPEngSessionSlotState::AddRegisteredAppIdL()
       
   666 // -----------------------------------------------------------------------------
       
   667 //
       
   668 void CPEngSessionSlotState::AddRegisteredAppIdL(
       
   669     const TDesC& aAppId )
       
   670     {
       
   671     __ASSERT_ALWAYS( aAppId.Length() > 0, User::Leave( KErrArgument ) );
       
   672 
       
   673     iRegAdded = iRegisteredApps.InsertIsqL( aAppId );
       
   674     }
       
   675 
       
   676 
       
   677 // -----------------------------------------------------------------------------
       
   678 // CPEngSessionSlotState::RemoveRegisteredAppIdL()
       
   679 // -----------------------------------------------------------------------------
       
   680 //
       
   681 void CPEngSessionSlotState::RemoveRegisteredAppIdL(
       
   682     const TDesC& aAppId )
       
   683     {
       
   684     TInt pos( 0 );
       
   685     if ( KErrNone != iActiveApps.Find( aAppId, pos ) )
       
   686         {
       
   687         if ( KErrNone == iRegisteredApps.Find( aAppId, pos ) )
       
   688             {
       
   689             // can we delete ID, isn't it last one
       
   690             if ( ( iRegisteredApps.Count() == 1 )
       
   691                  &&
       
   692                  ( iState == EPEngNWPresenceSessionOpen )
       
   693                )
       
   694                 {
       
   695                 // App Id cannot be deleted, last active one
       
   696                 User::Leave( KErrNotSupported );
       
   697                 }
       
   698             iRegRemoved = pos;
       
   699             return;
       
   700             }
       
   701         // ID was not found
       
   702         User::Leave( KErrNotFound );
       
   703         }
       
   704     // this application is still active, refuse deletion
       
   705     User::Leave( KErrNotSupported );
       
   706     }
       
   707 
       
   708 
       
   709 // -----------------------------------------------------------------------------
       
   710 // CPEngSessionSlotState::AddActiveAppIdL()
       
   711 // -----------------------------------------------------------------------------
       
   712 //
       
   713 void CPEngSessionSlotState::AddActiveAppIdL(
       
   714     const TDesC& aAppId )
       
   715     {
       
   716     // we relly on Presence Server that IDs are unique
       
   717     iActiveAdded =  iActiveApps.InsertIsqL( aAppId );
       
   718     }
       
   719 
       
   720 
       
   721 // -----------------------------------------------------------------------------
       
   722 // CPEngSessionSlotState::RemoveActiveAppId()
       
   723 // -----------------------------------------------------------------------------
       
   724 //
       
   725 void CPEngSessionSlotState::RemoveActiveAppId( const TDesC& aAppId )
       
   726     {
       
   727     TInt pos( 0 );
       
   728     if ( KErrNone == iActiveApps.Find( aAppId, pos ) )
       
   729         {
       
   730         iActiveRemoved = pos;
       
   731         }
       
   732     }
       
   733 
       
   734 
       
   735 // -----------------------------------------------------------------------------
       
   736 // CPEngSessionSlotState::ApplicationRegistered()
       
   737 // -----------------------------------------------------------------------------
       
   738 //
       
   739 TBool CPEngSessionSlotState::ApplicationRegistered( const TDesC& aAppId ) const
       
   740     {
       
   741     TInt pos( KErrNotFound );
       
   742     if ( KErrNone != iRegisteredApps.FindIsq( aAppId, pos ) )
       
   743         {
       
   744         return EFalse;
       
   745         }
       
   746 
       
   747     return ETrue;
       
   748     }
       
   749 
       
   750 
       
   751 // End of File
       
   752 
       
   753