--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/harvester/composerplugins/imagecomposer/src/imagepresentobserver.cpp	Mon Jan 18 20:34:07 2010 +0200
@@ -0,0 +1,235 @@
+/*
+* Copyright (c) 2006-2009 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:  image composer listener for setting pending image objects present
+*
+*/
+
+
+#include "imagepresentobserver.h"
+#include "harvesterlog.h"
+#include "mdeconstants.h"
+#include "composerimageplugin.h"
+#include "mdcserializationbuffer.h"
+#include "mdsutils.h"
+#include "harvestercommon.h"
+
+using namespace MdeConstants;
+
+const TInt KBatchSize = 100;
+
+CImagePresentObserver::CImagePresentObserver() : 
+		CActive( KHarvesterPriorityComposerPlugin ),
+		iDefaultNamespace( NULL ),
+		iSession( NULL ),
+		iMdEHarvesterSession( NULL ),
+		iComposer( NULL ),
+		iPendingPckWrapper( NULL ),
+		iNextRequest( ERequestIdle ),
+		iPendingCount( 0 ),
+		iPendingBuffer( NULL ),
+		iStarted( EFalse )
+	{
+	// No implementation required
+	}
+
+CImagePresentObserver::~CImagePresentObserver()
+	{
+	if( iSession )
+	    {
+	    TRAP_IGNORE( iSession->RemoveObjectPresentObserverL( *this ) );
+	    }
+	
+	CleanUp();
+	}
+
+CImagePresentObserver* CImagePresentObserver::NewL( CMdESession* aSession, CComposerImagePlugin* aComposer, 
+		CMdEHarvesterSession* aMdEHarvesterSession )
+	{
+	WRITELOG( "CImagePresentObserver::NewL start" );
+	CImagePresentObserver* self = new (ELeave)CImagePresentObserver();
+	CleanupStack::PushL(self);
+	self->ConstructL( aSession, aComposer, aMdEHarvesterSession );
+	CleanupStack::Pop( self ); 
+	WRITELOG( "CImagePresentObserver::NewL end" );
+	return self;
+	}
+
+void CImagePresentObserver::ConstructL( CMdESession* aSession, CComposerImagePlugin* aComposer, 
+		CMdEHarvesterSession* aMdEHarvesterSession )
+	{
+    WRITELOG( "CImagePresentObserver::ConstructL start" );
+    User::LeaveIfNull( iSession = aSession );
+    User::LeaveIfNull( iComposer = aComposer );
+    
+    iDefaultNamespace = &iSession->GetDefaultNamespaceDefL();
+
+    iSession->AddObjectPresentObserverL( *this );
+    iMdEHarvesterSession = aMdEHarvesterSession;
+    
+    iStarted = EFalse;
+    
+    CActiveScheduler::Add( this );
+
+    WRITELOG( "CImagePresentObserver::ConstructL end" );
+	}
+
+
+void CImagePresentObserver::HandleObjectPresentNotification(CMdESession& /*aSession*/, 
+		TBool aPresent, const RArray<TItemId>& aObjectIdArray)
+	{
+	if ( aPresent )
+		{
+		if ( !iStarted )
+			{
+			CMdEObjectDef* imageObjDef = NULL;
+			TRAP_IGNORE( imageObjDef = &iDefaultNamespace->GetObjectDefL( 
+					MdeConstants::Image::KImageObject ));
+			
+			iPendingCount = iMdEHarvesterSession->GetPendingCount( imageObjDef );
+			SetNextRequest( ERequestWaitPendingCount );
+			iStarted = ETrue;
+			}
+		TInt count = aObjectIdArray.Count();
+		for (TInt i = 0; i < count; i++ )
+			{
+			iPresentObjectIds.Append( aObjectIdArray[i] );
+			}
+		}
+	}
+
+
+void CImagePresentObserver::RunL()
+	{
+	switch ( iNextRequest )
+		{
+		case ERequestIdle:
+			{
+			if( iComposeObjectIds.Count() > 0 )
+				{
+				iComposer->HandlePendingObjects( iComposeObjectIds );			
+				iComposeObjectIds.Reset();
+				}
+			iPendingObjectIds.Reset();
+			iPresentObjectIds.Reset();
+			delete iPendingBuffer;
+			iPendingBuffer = NULL;
+			iStarted = EFalse;
+			break;
+			}
+		
+		case ERequestWaitPendingCount:
+			{
+			if ( iPendingCount > 0 )
+				{
+				CMdEObjectDef& imageObjDef = iDefaultNamespace->GetObjectDefL( 
+						MdeConstants::Image::KImageObject );
+
+				iPendingBuffer = CMdCSerializationBuffer::NewL( iPendingCount * 
+						sizeof(TItemId) );
+			
+				const TInt result = iMdEHarvesterSession->GetPending( &imageObjDef,
+						iPendingCount, *iPendingBuffer );
+				
+				SetNextRequest( ERequestWaitPending );
+				}
+			else
+				{
+				SetNextRequest( ERequestIdle );
+				}
+			break;
+			}
+			
+		case ERequestWaitPending:
+			{
+			if ( iPendingBuffer )
+				{
+				DeserializeArrayL( iPendingBuffer->Buffer(), iPendingObjectIds );
+				}
+			
+			SetNextRequest( ERequestProcess );
+			break;
+			}
+		
+		case ERequestProcess:
+			{
+			if( iPresentObjectIds.Count() > 0 && iPendingObjectIds.Count() > 0 )
+				{
+				TItemId itemId = iPresentObjectIds[0];
+				iPresentObjectIds.Remove( 0 );
+				
+				TInt found = iPendingObjectIds.Find( itemId );
+				if ( found != KErrNotFound )
+					{
+					iPendingObjectIds.Remove( found );
+					iComposeObjectIds.Append( itemId );
+					}
+				}
+			else 
+				{
+				SetNextRequest( ERequestIdle );
+				
+				iPendingObjectIds.Compress();
+				iPresentObjectIds.Compress();
+				
+				break;
+				}
+
+			if( iComposeObjectIds.Count() > KBatchSize )
+				{
+				iComposer->HandlePendingObjects( iComposeObjectIds );		
+				iComposeObjectIds.Reset();
+				}
+			
+			SetNextRequest ( ERequestProcess );	
+			break;
+			}
+		}
+	}
+
+void CImagePresentObserver::DoCancel()
+	{
+	}
+
+TInt CImagePresentObserver::RunError( TInt /*aError*/ )
+	{
+	return KErrNone;
+	}
+
+// ---------------------------------------------------------------------------
+// SetNextRequest
+// ---------------------------------------------------------------------------
+//
+void CImagePresentObserver::SetNextRequest( TRequest aRequest )
+    {
+    iNextRequest = aRequest;
+            
+    if ( !IsActive() )
+        {
+        iStatus = KRequestPending;
+        SetActive();
+        TRequestStatus* ptrStatus = &iStatus;
+        User::RequestComplete( ptrStatus, KErrNone );
+        }
+    }
+
+
+void CImagePresentObserver::CleanUp()
+	{
+	iPendingObjectIds.Close();
+	iPresentObjectIds.Close();
+	iComposeObjectIds.Close();
+	delete iPendingBuffer;
+	iPendingBuffer = NULL;
+	}
+