--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/omadm/omadmappui/src/NSmlDMDbNotifier.cpp	Thu Dec 17 08:40:12 2009 +0200
@@ -0,0 +1,331 @@
+/*
+* Copyright (c) 2002-2005 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:  Provides methods for CNSmlDMDbNotifier class. 
+*
+*/
+
+
+#include "NSmlDMDbNotifier.h"
+#include "NSmlDMSyncDebug.h"
+#include "NSmlDMdef.h"
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::CNSmlDMDbNotifier
+// -----------------------------------------------------------------------------
+//
+CNSmlDMDbNotifier::CNSmlDMDbNotifier( RSyncMLSession* aSyncSession,
+                                      MNSmlDMDbEventHandler* aHandler)
+                                     : iSyncSession(aSyncSession),
+                                       iHandler( aHandler )
+ 	{
+ 	}
+
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::NewL
+// -----------------------------------------------------------------------------
+//
+CNSmlDMDbNotifier* CNSmlDMDbNotifier::NewL( RSyncMLSession* aSyncSession,
+                                            MNSmlDMDbEventHandler* aHandler)
+	{
+	CNSmlDMDbNotifier* self = new (ELeave) CNSmlDMDbNotifier( aSyncSession,
+	                                                          aHandler );
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::ConstructL()
+	{
+	iActiveCaller = CNSmlDMActiveCaller::NewL(this);
+	}
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CNSmlDMDbNotifier::~CNSmlDMDbNotifier()
+	{		
+	delete iActiveCaller;
+	iList.Close();
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::RequestL
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::RequestL()
+	{
+	Session().RequestEventL( *this );  // request MSyncMLEventObserver events
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::OnSyncMLSessionEvent
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::OnSyncMLSessionEvent( TEvent aEvent,
+                                              TInt aIdentifier,
+                                              TInt aError,
+                                              TInt /*aAdditionalData*/ )
+	{
+	TNSmlDMDbEvent event;
+
+	event.iType = aEvent;
+	event.iError = aError;
+		
+	if (aEvent == MSyncMLEventObserver::EProfileCreated || 
+	    aEvent == MSyncMLEventObserver::EProfileChanged ||
+	    aEvent == MSyncMLEventObserver::EProfileDeleted )
+		{
+		event.iProfileId = aIdentifier;
+		}
+	else
+		{
+		event.iProfileId = KErrNotFound;
+		}
+	
+	TRAP_IGNORE( iList.AppendL (event) );
+	
+	CallObserverWithDelay();
+	TRAP_IGNORE( RequestL() );
+    }
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::SetDisabled
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::SetDisabled( TBool aDisable )
+	{
+    iDisabled = aDisable;
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::Reset
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::Reset()
+	{
+    iDisabled = EFalse;
+	iList.Reset();
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::EventCount
+// -----------------------------------------------------------------------------
+//
+TInt CNSmlDMDbNotifier::EventCount()
+	{
+	return iList.Count();
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::Event
+// -----------------------------------------------------------------------------
+//
+TNSmlDMDbEvent CNSmlDMDbNotifier::Event( TInt aIndex )
+	{
+	__ASSERT_DEBUG( aIndex >= 0 && aIndex < iList.Count(),
+	                TUtil::Panic(KErrGeneral) );
+
+	return iList[aIndex];
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::Session
+// -----------------------------------------------------------------------------
+//
+RSyncMLSession& CNSmlDMDbNotifier::Session()
+	{
+	__ASSERT_DEBUG( iSyncSession, TUtil::Panic(KErrGeneral) );
+	
+	return *iSyncSession;
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::CallObserverWithDelay
+//
+// This is needed to avoid unnecessary observer calls (eg. in case 10 events are
+// reported in short time only last is reported to observer). 
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::CallObserverWithDelay()
+	{
+    iActiveCaller->Cancel();
+	iActiveCaller->Start( KErrNone, KListBoxUpdateDelay );
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::CallObserver
+//
+// this function investigates received events from last observer call
+// and calls observer to inform UI what to do. 
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::CallObserver()
+	{
+	TNSmlDMDbEvent event;
+	event.iProfileId = 0;
+	event.iType = 0;
+	event.iError = 0;
+	//
+	// check for critical error
+	//
+	if ( FindCloseEvent() != KErrNotFound )
+		{
+		event.iType = EClose;
+		TRAP_IGNORE( iHandler->HandleDbEventL( event ) );
+		return; // some database problem - UI should close
+		}
+	
+	//
+	// check if only one profile has changed
+	//
+	TInt index = FindSingleProfileEvent();
+	if ( index != KErrNotFound )
+		{
+		TNSmlDMDbEvent e = iList[index];
+        if (e.iType == MSyncMLEventObserver::EProfileDeleted)
+			{
+			event.iType = EDelete;
+			event.iProfileId = e.iProfileId; 
+			}
+		else
+			{
+			event.iType = EUpdate;
+			event.iProfileId = e.iProfileId; 
+			}
+	
+		TRAP_IGNORE( iHandler->HandleDbEventL( event ) );
+        return;
+		}
+		
+	//
+	// check if 2 or more profiles have changed
+	//
+	if (FindProfileEvent() != KErrNotFound)
+		{
+	    event.iType = EUpdateAll;
+    	TRAP_IGNORE( iHandler->HandleDbEventL( event ) );
+        return;
+    	}
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::FindCloseEvent
+// -----------------------------------------------------------------------------
+//
+TInt CNSmlDMDbNotifier::FindCloseEvent()
+	{
+	TInt count = iList.Count();
+
+	for ( TInt index = 0; index < count; index++ )
+		{
+		TNSmlDMDbEvent event = iList[index];
+		if ( event.iType == MSyncMLEventObserver::EServerTerminated )
+			{
+			return index;
+			}
+		}
+
+	return KErrNotFound;
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::FindProfileEvent
+// -----------------------------------------------------------------------------
+//
+TInt CNSmlDMDbNotifier::FindProfileEvent()
+	{
+	TInt count = iList.Count();
+
+    for ( TInt index = 0; index < count; index++ )
+		{
+		TNSmlDMDbEvent event = iList[index];
+		if ( event.iProfileId != KErrNotFound )
+			{
+			return index;
+			}
+		}
+
+	return KErrNotFound;
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::FindSingleProfileEvent
+// -----------------------------------------------------------------------------
+//
+TInt CNSmlDMDbNotifier::FindSingleProfileEvent()
+	{
+	TInt count = iList.Count();
+
+	// find out whether list contains update events for one profile only
+	for ( TInt index = 0; index < count; index++ )
+		{
+		TNSmlDMDbEvent event = iList[index];
+		if ( event.iProfileId != KErrNotFound &&
+		     IsUniqueProfileId(event.iProfileId) )
+			{
+			return index;
+        	}
+		}
+
+	return KErrNotFound;
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::IsUniqueProfileId
+// -----------------------------------------------------------------------------
+//
+TBool CNSmlDMDbNotifier::IsUniqueProfileId( TInt aId )
+	{
+	TInt count = iList.Count();
+
+    for ( TInt index = 0; index < count; index++ )
+		{
+		TNSmlDMDbEvent event = iList[index];
+		if ( event.iProfileId != KErrNotFound && event.iProfileId != aId )
+			{
+			return EFalse;
+			}
+		}
+
+	return ETrue;
+	}
+
+// -----------------------------------------------------------------------------
+// CNSmlDMDbNotifier::HandleActiveCallL
+// -----------------------------------------------------------------------------
+//
+void CNSmlDMDbNotifier::HandleActiveCallL()
+	{
+	if ( iDisabled )
+		{
+		return;  // UI has disabled notifications
+		}
+
+	if ( iSyncRunning )
+		{
+		return; // no UI updates while syncing
+		}
+
+	CallObserver();
+	Reset();
+	}
+
+// End of File