--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PECengine/PresenceManager2/SrcContactList/CPEngContactListNotifier2Imp.cpp	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,323 @@
+/*
+* Copyright (c) 2004 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:  Notifier API to listen presence contact list changes.
+*
+*/
+
+// INCLUDE FILES
+#include "CPEngNWSessionSlotID2Imp.h"
+#include "CPEngContactListNotifier2Imp.h"
+#include "CPEngNWSessionSlotEventEntry.h"
+#include "GenObserverNotifyMediators.h"
+
+#include "CPEngNWSessionSlotStorageProxy.h"
+#include "MPEngStorageManagerWatcher.h"
+#include "PEngStorageManager.h"
+#include "TPEngMDesCArrayAdapter.h"
+
+#include <CPEngContactListNotifier2.h>
+#include <MPEngContactListObserver2.h>
+
+
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::NewL()
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CPEngContactListNotifier2Imp* CPEngContactListNotifier2Imp::NewL(
+    CPEngContactListNotifier2& aInterface,
+    TInt aPriority,
+    const CPEngNWSessionSlotID2& aNWSessionSlotID )
+    {
+    CPEngContactListNotifier2Imp* self =
+        new ( ELeave ) CPEngContactListNotifier2Imp( aInterface, aPriority );
+    CleanupStack::PushL( self );
+    self->ConstructL( aNWSessionSlotID );
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+
+
+// Destructor
+CPEngContactListNotifier2Imp::~CPEngContactListNotifier2Imp()
+    {
+    iDying = ETrue;
+    Stop();
+
+    if ( iWatcher )
+        {
+        iWatcher->UnregisterListenSIDsObserver( *this );
+        iWatcher->Close();
+        }
+
+    iObsArray.Close();
+    delete iUsedSlot;
+    }
+
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::CPEngContactListNotifier2Imp
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CPEngContactListNotifier2Imp::CPEngContactListNotifier2Imp(
+    CPEngContactListNotifier2& aInterface,
+    TInt aPriority )
+        : iInterface( aInterface ),
+        iCActivePriority( aPriority )
+    {
+    }
+
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::ConstructL()
+// -----------------------------------------------------------------------------
+//
+void CPEngContactListNotifier2Imp::ConstructL(
+    const CPEngNWSessionSlotID2& aNWSessionSlotID )
+    {
+    iUsedSlot = CPEngNWSessionSlotStorageProxy::NewL( aNWSessionSlotID );
+    iWatcher = PEngStorageManager::GetStorageManagerWatcherL( iUsedSlot->BaseId() );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::Start()
+// -----------------------------------------------------------------------------
+//
+TInt CPEngContactListNotifier2Imp::Start( const MDesCArray& aContactListNames )
+    {
+    //sanity checks to encapsulate notifier behaviour
+    if ( iDying )
+        {
+        //if dying, the notifier restart is silently ignored
+        //because notifier is evidently shutting down
+        return KErrNone;
+        }
+
+    if ( iStarted )
+        {
+        return KErrInUse;
+        }
+
+    // EFalse as not keeping previous observing Ids
+    TRAPD( err,
+        {
+        // and register for SID change events
+        iWatcher->RegisterListenSIDsObserverL(
+            aContactListNames,
+            *this,
+            MPEngStorageManagerWatcher::EPEngObserverNormalPriority,
+            EFalse );
+        } );
+
+    if ( err == KErrNone )
+        {
+        iStarted = ETrue;
+        }
+
+    else
+        {
+        //Cancel the notification requests
+        iWatcher->UnregisterListenSIDsObserver( *this );
+        }
+
+    return err;
+    }
+
+
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::Stop()
+// -----------------------------------------------------------------------------
+//
+void CPEngContactListNotifier2Imp::Stop()
+    {
+    // we cannot actually unregister all SIDs/possibly can be implemented in Sotrage
+    // anyway, this will cause to ignore all possible notifications
+    if ( !iStarted )
+        {
+        return;
+        }
+    iWatcher->RestartSIDsObserver( *this );
+    iStarted = EFalse;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::IsActive()
+// -----------------------------------------------------------------------------
+//
+TBool CPEngContactListNotifier2Imp::IsActive() const
+    {
+    return iStarted;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::Add()
+// -----------------------------------------------------------------------------
+//
+TInt CPEngContactListNotifier2Imp::Add( const TDesC& aContactListName )
+
+    {
+    if ( !iStarted )
+        {
+        return KErrNotReady;
+        }
+
+    TPEngMDesCArrayAdapter adapter( aContactListName );
+    TRAPD( err,
+        {
+        //Update SID change request
+        iWatcher->RegisterListenSIDsObserverL(
+            adapter,
+            *this,
+            MPEngStorageManagerWatcher::EPEngObserverNormalPriority,
+            ETrue );
+        } );
+
+    //If in error, tidy the watcher
+    if ( err != KErrNone  )
+        {
+        iWatcher->RemoveSIDsFromSIDsObserver( adapter, *this );
+        }
+
+    return err;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::Remove()
+// -----------------------------------------------------------------------------
+//
+TInt CPEngContactListNotifier2Imp::Remove( const TDesC& aContactListName )
+
+    {
+    if ( !iStarted )
+        {
+        return KErrNotReady;
+        }
+
+    //No exceptions allowed below...
+    TPEngMDesCArrayAdapter adapter( aContactListName );
+    iWatcher->RemoveSIDsFromSIDsObserver( adapter, *this );
+    return KErrNone;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::AddObserver()
+// -----------------------------------------------------------------------------
+//
+TInt CPEngContactListNotifier2Imp::AddObserver(
+    MPEngContactListObserver2& aObserver )
+
+    {
+    return iObsArray.AddObserver( &aObserver );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::RemoveObserver()
+// -----------------------------------------------------------------------------
+//
+TInt CPEngContactListNotifier2Imp::RemoveObserver(
+    MPEngContactListObserver2& aObserver )
+
+    {
+    return iObsArray.RemoveObserver( &aObserver );
+    }
+
+
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::HandleSIDsChangeL()
+// From MPEngSIDChangeObserver
+// -----------------------------------------------------------------------------
+//
+void CPEngContactListNotifier2Imp::HandleSIDsChangeL( CPtrCArray& aChangedSIDs )
+    {
+    //if not running, don't notify the observers
+    if ( !iStarted )
+        {
+        return;
+        }
+
+    const TInt sidCount = aChangedSIDs.MdcaCount();
+    for ( TInt ix = 0; ix < sidCount; ix++ )
+        {
+        MediateNotify( KErrNone, aChangedSIDs.MdcaPoint( ix ) );
+        }
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::HandleSIDNotifyError()
+// From MPEngSIDChangeObserver
+// -----------------------------------------------------------------------------
+//
+void CPEngContactListNotifier2Imp::HandleSIDNotifyError( TInt aError )
+    {
+    //if not running, don't notify the observers
+    if ( !iStarted )
+        {
+        return;
+        }
+
+    MediateNotify( aError, KNullDesC );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngContactListNotifier2Imp::MediateNotify()
+// -----------------------------------------------------------------------------
+//
+void CPEngContactListNotifier2Imp::MediateNotify( TInt aError,
+                                                  const TDesC& aContactListName )
+    {
+    TGenNotifyMediator2 < MPEngContactListObserver2,
+    CPEngContactListNotifier2&,
+    const TDesC& >
+    eventMediator( &MPEngContactListObserver2::HandleContactListChangeL,
+                   &MPEngContactListObserver2::HandleContactListError,
+                   iInterface,
+                   aContactListName );
+
+    if ( aError == KErrNone )
+        {
+        iObsArray.NotifyObservers( eventMediator );
+        }
+    else
+        {
+        iObsArray.NotifyErrorObservers( eventMediator, aError );
+        }
+    }
+
+
+
+// End of File
+
+