--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wvuing/IMPSConnectionUI/ServiceSrc/CCnUiClientStatusHandler.cpp	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,207 @@
+/*
+* 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:  Concrete client login status handler.
+*
+*/
+
+// INCLUDE FILES
+#include <e32std.h>
+#include "CCnUiClientStatusHandler.h"
+
+/**
+* Channel value for no logged
+* in clients. Logged in clients are
+* logically orred channel value.
+* @since 2.1
+*/
+const TInt KCnUiNoLoggedInClients = 0;
+
+
+
+// ================= GLOBAL FUNCTIONS =======================
+// -----------------------------------------------------------------------------
+// CreateClientStatusHandlerLC()
+// -----------------------------------------------------------------------------
+//
+GLREF_C MCnUiClientStatusHandler* CreateClientStatusHandlerLC()
+    {
+    return CCnUiClientStatusHandler::NewLC();
+    }
+
+
+
+// ================= MEMBER FUNCTIONS =======================
+// Two-phased constructor.
+CCnUiClientStatusHandler* CCnUiClientStatusHandler::NewLC()
+    {
+    CCnUiClientStatusHandler* self = new ( ELeave ) CCnUiClientStatusHandler;
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    return self;
+    }
+
+
+// Destructor
+CCnUiClientStatusHandler::~CCnUiClientStatusHandler()
+    {
+    delete iLoginStastusChannel;
+    }
+
+// C++ default constructor can NOT contain any code, that
+// might leave.
+//
+CCnUiClientStatusHandler::CCnUiClientStatusHandler()
+    {
+    }
+
+
+// Symbian OS default constructor can leave.
+void CCnUiClientStatusHandler::ConstructL()
+    {
+    iLoginStastusChannel = CCnUiGroupChannel::NewL( ECnUiGlobalGroup,
+                                                    ECnUiClientLoginLogoutStateChannel,
+                                                    EFalse ); //permanent data
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::AnyClientLoggedIn()
+// -----------------------------------------------------------------------------
+//
+TBool CCnUiClientStatusHandler::AnyClientLoggedIn()
+    {
+    TInt statusWord = KCnUiNoLoggedInClients;
+    iLoginStastusChannel->Read( statusWord );
+
+    //any client logged in
+    if ( statusWord != 0 )
+        {
+        return ETrue;
+        }
+
+    return EFalse;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::ClientLoggedIn()
+// -----------------------------------------------------------------------------
+//
+TBool CCnUiClientStatusHandler::ClientLoggedIn( TIMPSConnectionClient aClient )
+    {
+    TInt statusWord = KCnUiNoLoggedInClients;
+    iLoginStastusChannel->Read( statusWord );
+
+    //Is the asked client logged in
+    if ( statusWord & ( TInt ) aClient )
+        {
+        return ETrue;
+        }
+
+    return EFalse;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::SetNoClientsLoggedInL()
+// -----------------------------------------------------------------------------
+//
+void CCnUiClientStatusHandler::SetNoClientsLoggedInL()
+    {
+    iLoginStastusChannel->WriteL( KCnUiNoLoggedInClients );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::SetClientLoggedInL()
+// -----------------------------------------------------------------------------
+//
+void CCnUiClientStatusHandler::SetClientLoggedInL( TIMPSConnectionClient aClient )
+    {
+    TInt existingClients = KCnUiNoLoggedInClients;
+    iLoginStastusChannel->Read( existingClients );
+
+    //this client is among the other ones
+    TInt loggedInClients = existingClients | ( TInt ) aClient;
+    iLoginStastusChannel->WriteL( loggedInClients );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::SetClientLoggedOutL()
+// -----------------------------------------------------------------------------
+//
+void CCnUiClientStatusHandler::SetClientLoggedOutL( TIMPSConnectionClient aClient )
+    {
+    TInt existingClients = KCnUiNoLoggedInClients;
+    iLoginStastusChannel->Read( existingClients );
+
+
+    TInt loggedInClients = existingClients & ~( TInt ) aClient;
+    iLoginStastusChannel->WriteL( loggedInClients );
+    }
+
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::NotifyClientStatusChangesL()
+// -----------------------------------------------------------------------------
+//
+void CCnUiClientStatusHandler::NotifyClientLoginStatusChangesL(
+    MCnUiClientStatusObserver* aObserver,
+    TIMPSConnectionClient aClientToNotify )
+    {
+    __ASSERT_ALWAYS( !iClntStatusObserver, User::Leave( KErrInUse ) );
+    __ASSERT_ALWAYS( aObserver, User::Leave( KErrArgument ) );
+
+    //start the notifier
+    iLoginStastusChannel->ListenL( this );
+
+    //store observer information
+    iClntStatusObserver = aObserver;
+    iObservedClient = aClientToNotify;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::CancelClientStatusNotify()
+// -----------------------------------------------------------------------------
+//
+void CCnUiClientStatusHandler::CancelClientStatusNotify()
+    {
+    iLoginStastusChannel->CancelListen();
+    iClntStatusObserver = NULL;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCnUiClientStatusHandler::HandleNotifyL()
+// from MSharedDataNotifyHandler
+// -----------------------------------------------------------------------------
+//
+void CCnUiClientStatusHandler::HandleChannelMsg( TInt /*aGroupId*/,
+                                                 TGCChannelID /*aChannelId*/,
+                                                 TInt aRetMsg )
+    {
+    TBool clientNowLoggedIn = EFalse;
+    //Is the asked client logged in
+    if ( aRetMsg & ( TInt ) iObservedClient )
+        {
+        clientNowLoggedIn = ETrue;
+        }
+
+    iClntStatusObserver->HandleClientLoginStatusChange( iObservedClient, clientNowLoggedIn );
+    }
+
+//  End of File