--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/presetserver/clientsrc/Pspresetinterface.cpp	Mon Apr 19 14:01:53 2010 +0300
@@ -0,0 +1,303 @@
+/*
+* Copyright (c) 2006-2006 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Preset interface implementation
+*
+*/
+
+
+#include <ecom.h>
+#include <pscommon.h>
+#include <pspresetinterface.h>
+#include <pspresetnotifier.h>
+#include <pstransaction.h>
+#include <s32mem.h>
+
+#include "psdebug.h"
+#include "psservsession.h"
+
+const TInt KPSExternalizeBufGranularity = 32; // Granularity of the preset data externalisation buffer.
+
+/**
+ * Preset interface initialization parameters.
+ */
+typedef struct
+    {
+    /** Session with the preset server. */
+    RPSServ* iServ;
+    /** Data handler of the preset. */
+    TUid iDataHandler;
+    /** Id of the preset. */
+    TInt iId;
+    } TPSPresetInterfaceParams;
+
+// ---------------------------------------------------------------------------
+// Panics the process.
+// ---------------------------------------------------------------------------
+//
+void Panic( TInt aReason )
+    {
+    _LIT( category, "CPSPresetInterface" );
+    User::Panic( category, aReason );
+    }
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CPSPresetInterface* CPSPresetInterface::CreateL( RPSServ& aServ, TInt aId, TUid aDataHandler )
+    {
+    TPSPresetInterfaceParams params = { &aServ, aDataHandler, aId };
+    CPSPresetInterface* self = static_cast<CPSPresetInterface*>( REComSession::CreateImplementationL( aDataHandler, _FOFF( CPSPresetInterface, iDtor ), &params ) );
+    CleanupStack::PushL( self );
+    self->UpdatePresetL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Destructor.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPSPresetInterface::~CPSPresetInterface()
+    {
+    delete iName;
+    delete iNotifier;
+    
+    if ( iSession )
+        {
+        iSession->Close();
+        }
+    delete iSession;
+    
+    REComSession::DestroyedImplementation( iDtor );
+    }
+
+// ---------------------------------------------------------------------------
+// Creates a transaction.
+// Transfers ownership.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPSTransaction* CPSPresetInterface::CreateTransactionL()
+    {
+    CPSTransaction* transaction = CreateTransactionLC();
+    CleanupStack::Pop( transaction );
+    return transaction;
+    }
+
+// ---------------------------------------------------------------------------
+// Creates a transaction and leaves it on the cleanup stack.
+// Transfers ownership.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPSTransaction* CPSPresetInterface::CreateTransactionLC()
+    {
+    CPSTransaction* transaction = CPSTransaction::NewL( *this );
+    CleanupStack::PushL( transaction );
+    return transaction;
+    }
+
+// ---------------------------------------------------------------------------
+// Sets the name of the preset.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CPSPresetInterface::SetNameL( const TDesC& aName )
+    {
+    ValidateDataChange();
+
+    delete iName;
+    iName = NULL;
+    iName = aName.AllocL();
+    }
+
+// ---------------------------------------------------------------------------
+// Returns the name of the preset.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C const TDesC& CPSPresetInterface::Name() const
+    {
+    return *iName;
+    }
+
+// ---------------------------------------------------------------------------
+// Sets the index of the preset.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CPSPresetInterface::SetIndex( TInt aIndex )
+    {    
+    ValidateDataChange();
+
+    iIndex = aIndex;
+    }
+
+// ---------------------------------------------------------------------------
+// Returns the index of the preset.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C TInt CPSPresetInterface::Index() const
+    {
+    return iIndex; 
+    }
+
+// ---------------------------------------------------------------------------
+// Returns the id of the preset.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C TInt CPSPresetInterface::Id() const
+    {
+    return iId;
+    }
+
+// ---------------------------------------------------------------------------
+// Returns the data handler of the preset.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C TUid CPSPresetInterface::DataHandler() const
+    {
+    return iDataHandler;
+    }
+
+// ---------------------------------------------------------------------------
+// Performs base construction on the preset.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CPSPresetInterface::BaseConstructL( TAny* aParams )
+    {
+    const TPSPresetInterfaceParams& params = *static_cast<TPSPresetInterfaceParams*>( aParams );
+    
+    iDataHandler = params.iDataHandler;
+    iId = params.iId;
+
+    iSession = new ( ELeave ) RPSServSession( *params.iServ, iId );
+    iNotifier = CPSPresetNotifier::NewL( *params.iServ, *this, iId );
+    }
+
+// ---------------------------------------------------------------------------
+// Validates the preset for data change.
+// ---------------------------------------------------------------------------
+//  
+EXPORT_C void CPSPresetInterface::ValidateDataChange()
+    {
+    __ASSERT_ALWAYS( iTransaction, Panic( KErrNotReady ) );
+    }
+
+// ---------------------------------------------------------------------------
+// Handles changes in the preset.
+// ---------------------------------------------------------------------------
+//  
+EXPORT_C void CPSPresetInterface::HandlePresetChangedL( TInt PSDEBUGVAR( aId ), TUid /*aDataHandler*/, MPSPresetObserver::TPSReason aReason )
+    {
+    __ASSERT_DEBUG( iId == aId, Panic( KErrCorrupt ) );
+
+    switch ( aReason )
+        {
+        case MPSPresetObserver::EPSModified:
+            UpdatePresetL();
+            break;            
+        case MPSPresetObserver::EPSDeleted:
+            // Preset deleted from the database, close the session.
+            iSession->Close();
+            delete iSession;
+            iSession = NULL;                            
+            break;
+        case MPSPresetObserver::EPSCreated: // Falls through.                
+        default:
+            break;
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Begins the transaction.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CPSPresetInterface::BeginTransactionL()
+    {
+    if( iSession )
+        {
+        iSession->BeginTransactionL();
+        iTransaction = ETrue;
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Commits the transaction.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CPSPresetInterface::CommitL()
+    {
+    if( iSession )
+        {
+        iSession->SetL( EPSOpSetPresetName, *iName );
+        iSession->SetL( EPSOpSetPresetIndex, iIndex );    
+    
+        CBufFlat* buf = CBufFlat::NewL( KPSExternalizeBufGranularity );
+        CleanupStack::PushL( buf );
+        RBufWriteStream stream( *buf );
+        CleanupClosePushL( stream );
+        ExternalizeL( stream );
+        stream.CommitL();
+        CleanupStack::PopAndDestroy( &stream );
+        iSession->SetL( EPSOpSetPresetData, buf->Ptr( 0 ) );
+        CleanupStack::PopAndDestroy( buf );
+
+        iSession->CommitL();
+    
+        iTransaction = EFalse;
+        }        
+    }
+    
+// ---------------------------------------------------------------------------
+// Reverts all changes done during the transaction.
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CPSPresetInterface::Rollback()
+    {
+    if( iSession )
+        {
+        iSession->Rollback();
+        iTransaction = EFalse;
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Updates the preset.
+// ---------------------------------------------------------------------------
+//  
+void CPSPresetInterface::UpdatePresetL()
+    {
+    if( iSession )
+        {
+        iSession->GetL( EPSOpGetPresetIndex, iIndex );
+    
+        delete iName;
+        iName = NULL;
+    
+        iSession->GetL( EPSOpGetPresetName, EPSOpGetPresetNameLength, iName );
+
+        HBufC8* data;
+        iSession->GetL( EPSOpGetPresetData, EPSOpGetPresetDataLength, data );
+        CleanupStack::PushL( data );
+    
+        if ( data->Length() )
+            {
+            // There was packed data in the database, implementing plugin can unpack it now.
+            RDesReadStream stream( *data );
+            CleanupClosePushL( stream );
+            InternalizeL( stream );
+            CleanupStack::PopAndDestroy( &stream );
+            }
+
+        CleanupStack::PopAndDestroy( data );
+        }
+    }
+