--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/upnpsharing/upnpcontentserver/src/upnpcustomgrouper.cpp	Thu Dec 17 08:52:00 2009 +0200
@@ -0,0 +1,149 @@
+/*
+* Copyright (c) 2006-2007 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:      CUPnPCustomGrouper class implementation
+*
+*/
+
+
+
+
+
+
+
+// INCLUDE FILES
+#include <MCLFContentListingEngine.h>
+#include <ContentListingFactory.h>
+#include <MCLFModifiableItem.h>
+#include <CLFContentListing.hrh>
+#include "upnpcustomgrouper.h"
+
+// ============================ MEMBER FUNCTIONS =============================
+
+// --------------------------------------------------------------------------
+// CUpnpCustomGrouper::CUpnpCustomGrouper
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// --------------------------------------------------------------------------
+//
+CUpnpCustomGrouper::CUpnpCustomGrouper(
+                            const TCLFExtendedFieldId aGroupingCriteria )
+    : iGroupingCriteria( aGroupingCriteria )
+    {
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCustomGrouper::NewL
+// Two-phased constructor.
+// --------------------------------------------------------------------------
+//
+CUpnpCustomGrouper* CUpnpCustomGrouper::NewL(
+                                TCLFExtendedFieldId aGroupingCriteria )
+    {
+    CUpnpCustomGrouper* self =
+        new (ELeave) CUpnpCustomGrouper( aGroupingCriteria );
+    return self;
+    }
+
+// Destructor
+CUpnpCustomGrouper::~CUpnpCustomGrouper()
+    {
+    iModItems.ResetAndDestroy();
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCustomGrouper::GroupItemsL
+// Method for grouping Content Listing Framework items.
+// --------------------------------------------------------------------------
+//
+void CUpnpCustomGrouper::GroupItemsL(const TArray<MCLFItem*>& aSourceList,
+                                        RPointerArray<MCLFItem>& aGroupedList)
+    {
+    // Delete old modifiable items (groups) is any
+    iModItems.ResetAndDestroy();
+
+    // Process all items of the source list
+    TInt count( aSourceList.Count() );
+    for( TInt i = 0; i < count; i++ )
+        {
+        // Get value of the field in iGroupingCriteria.
+        // For example, if iFilterCriteria contains ECLFFieldIdArtist,
+        // name of the artist is stored to fieldValue variable.
+        TPtrC fieldValue;
+        MCLFItem* currentItem = aSourceList[i];
+        TInt error( currentItem->GetField(
+            iGroupingCriteria, fieldValue ) );
+
+        if( error == KErrNone )
+            {
+            // Check if the group is already added to the list
+            if( !GroupAlreadyExists( fieldValue ) )
+                {
+                // Create a new modifiable item and add a field
+                // name and value of the field.
+                // For example, if grouping criteria is ECLFFieldIdArtist,
+                // the field is added to the item with name of the artist.
+                MCLFModifiableItem* modItem =
+                    ContentListingFactory::NewModifiableItemLC();
+                modItem->AddFieldL( iGroupingCriteria, fieldValue );
+
+                // Add the item to the iModItems array to keep track,
+                // which groups are already in the list (for example, which
+                // groups are already in the list). The iModItems array
+                // also deletes these items, when they are no longer needed.
+                iModItems.AppendL( modItem ); // ownership transferred
+
+                CleanupStack::Pop(); // modItem
+
+                // Add the item to the model
+                aGroupedList.AppendL( modItem );
+                }
+            }
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCustomGrouper::GroupAlreadyExists
+// Checks if group has been added to the model already.
+// --------------------------------------------------------------------------
+//
+TBool CUpnpCustomGrouper::GroupAlreadyExists( const TDesC& aGroupName )
+    {
+    TBool status = EFalse;
+    TInt count( iModItems.Count() );
+    for( TInt i = 0; i < count; i++ )
+        {
+        // Get value of the field in iGroupingCriteria.
+        // For example, if iGroupingCriteria contains ECLFFieldIdArtist,
+        // name of the artist is stored to fieldValue variable.
+        TPtrC fieldValue;
+        MCLFItem* currentItem = iModItems[i];
+        TInt error( currentItem->GetField(
+            iGroupingCriteria, fieldValue ) );
+
+        if( error == KErrNone )
+            {
+            if( fieldValue == aGroupName )
+                {
+                // Group is in the list
+                status = ETrue;
+                }
+            }
+        }
+
+    // Group is not in the list
+    return status;
+    }
+
+
+//  End of File