diff -r 1f002146abb4 -r 8d5d7fcf9b59 cbs/cbsserver/ServerSrc/CCbsTopicCollection.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cbs/cbsserver/ServerSrc/CCbsTopicCollection.cpp	Wed Jul 21 18:26:52 2010 +0300
@@ -0,0 +1,286 @@
+/*
+* Copyright (c) 2003 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:  This module contains the implementation of CCbsTopicCollection class 
+*                member functions. 
+* 
+*
+*/
+
+
+// INCLUDE FILES
+
+#include "CbsCommon.h"
+#include "CCbsSession.h"
+#include "CCbsTopicCollection.h"
+#include "CCbsDbImpTopicCollection.h"
+#include "CCbsDbImpTopicList.h"
+#include "CbsServerConstants.h"
+#include "CCbsServer.h"
+#include "CbsLogger.h"
+
+// ================= MEMBER FUNCTIONS =======================
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::CCbsTopicCollection
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CCbsTopicCollection::CCbsTopicCollection( 
+    CCbsSession& aSession, 
+    CCbsDbImpTopicCollection& aCollection, 
+    CCbsDbImpTopicList& aList )    
+    : CCbsObject( aSession ), 
+    iCollection( aCollection ), 
+    iTopicList ( aList )
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::ConstructL()
+    {
+    iCollection.AddObserverL( this );
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CCbsTopicCollection* CCbsTopicCollection::NewL( 
+    CCbsSession& aSession, 
+    CCbsDbImpTopicCollection& aCollection,
+    CCbsDbImpTopicList& aList )
+    {
+    // Normal two phase construction.
+    CCbsTopicCollection* self = 
+        new ( ELeave ) CCbsTopicCollection( aSession, aCollection, aList );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop();
+    return self;
+    }
+
+// Destructor
+CCbsTopicCollection::~CCbsTopicCollection()
+    {
+    CBSLOGSTRING("CBSSERVER: >>> CCbsTopicCollection::~CCbsTopicCollection()"); 
+    // Remove from the observers.
+    iCollection.RemoveObserver( this );
+    CBSLOGSTRING("CBSSERVER: <<< CCbsTopicCollection::~CCbsTopicCollection()");
+    }
+    
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::HandleRequestsL
+// Passes the requests to proper functions.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//    
+TBool CCbsTopicCollection::HandleRequestsL( 
+    const RMessage2& aMessage )
+    {    
+    CBSLOGSTRING("CBSSERVER: >>> CCbsTopicCollection::HandleRequestsL()");
+    
+    TBool requestHandled( ETrue );
+
+    // Handle the requests.
+    switch ( aMessage.Function() )
+        {
+        case ECbsCloseTopicCollectionSubsession:
+            CloseCollection();
+            aMessage.Complete( KErrNone );
+            break;
+
+        case ECbsGetTopicInfoCount:                 
+            GetTopicCountL();
+            break;
+
+        case ECbsGetTopicInfo:                      
+            GetTopicInfoL();
+            break;
+
+        case ECbsTopicInList:                       
+            TopicInListL();
+            break;
+
+        case ECbsNotifyOnChange:
+            NotifyOnChange();
+            break;
+    
+        case ECbsNotifyOnChangeCancel:
+            NotifyOnChangeCancel();
+            break;
+
+        default:
+            requestHandled = EFalse;
+            break;
+        }
+              
+    CBSLOGSTRING2("CBSSERVER: <<< CCbsTopicCollection::HandleRequestsL(), returning requestHandled: %d", requestHandled );    
+    return requestHandled;
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::TopicCollectionContentsChangedInd
+// Called whenever topic collection contents are changed
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::TopicCollectionContentsChangedInd()
+    {
+    // Notify if necessary.
+    Notify();
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::CloseCollection
+// Closes the subsession.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::CloseCollection()
+    {
+    // Removes the object.
+    Session().Server().DeleteObjectByHandle( Message().Int3() );
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::GetTopicCountL
+// Writes the number of topics in the topic collection to the client.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::GetTopicCountL()
+    {
+    TInt count;
+    iCollection.GetTopicIdentityCount( count );
+    // Write the count to the client side.
+    TPckgBuf< TInt > pckg( count );
+    Message().WriteL( 0, pckg );
+
+    // Complete the request.
+    Message().Complete( KErrNone );
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::GetTopicInfoL
+// Writes the topic identity requested by the client to the client side. 
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::GetTopicInfoL()
+    {
+    // Get the index from the client
+    TInt index( 0 );
+    index = Message().Int0();
+
+    TCbsTopicInfo info;
+    iCollection.GetTopicIdentityL( index, info );
+
+    // Write the count to the client side.
+    TPckgBuf< TCbsTopicInfo > pckg( info );
+    Message().WriteL( 1, pckg );
+
+    // Complete the request.
+    Message().Complete( KErrNone );
+    
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::TopicInListL
+// Writes a truth value to the client determining the existence 
+// of a topic in the current topic list. 
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::TopicInListL()
+    {
+    // Get the topic index from the client
+    TInt index( 0 );
+    index = Message().Int0();
+      
+    // Check if this topic exists in the topic list.
+    TCbsTopicInfo topicInfo;
+    iCollection.GetTopicIdentityL( index, topicInfo );
+
+    TBool inList( iTopicList.TopicIndexInList( topicInfo.iNumber ) >= 0 );
+
+    // Write the result back to the client.
+    TPckgBuf< TBool > pckg( inList );
+    Message().WriteL( 1, pckg );
+
+    // Complete the request.
+    Message().Complete( KErrNone );
+
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::NotifyOnChange
+// Sets up a notification so that the client will be notified when the 
+// collecton is changed. 
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::NotifyOnChange()
+    {
+    // Just create a pending request.
+    if ( iIsMessage )
+        {
+        NotifyOnChangeCancel();
+        }
+
+    iIsMessage = ETrue;
+    iMessage = Message();
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::NotifyOnChangeCancel
+// Cancels the pending request. 
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::NotifyOnChangeCancel()
+    {
+    // Cancel the notification.
+    if ( iIsMessage )
+        {
+        iMessage.Complete( KErrCancel );
+        }
+
+    iIsMessage = EFalse;
+    Message().Complete( KErrNone );
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsTopicCollection::Notify
+// Notifies the client. 
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsTopicCollection::Notify()
+    {
+    // Notify, if necessary
+    if ( iIsMessage ) 
+        {
+        iMessage.Complete( KErrNone );
+        }    
+    }
+
+// ================= OTHER EXPORTED FUNCTIONS ==============
+
+//  End of File