diff -r 000000000000 -r 71ca22bcf22a mmfenh/enhancedmediaclient/Plugins/DataBufferSource/src/ParentChildIntfc.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmfenh/enhancedmediaclient/Plugins/DataBufferSource/src/ParentChildIntfc.cpp	Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,107 @@
+/*
+* Copyright (c) 2006 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:  Utility class for impementing Parent/Child class
+*
+*/
+
+#include "ParentChildIntfc.h"
+
+CParentIntfc::~CParentIntfc()
+    {
+    TInt count = iChildrenList.Count();
+    CChildIntfc* childPtr(NULL);
+    for (TInt index(0); index < count; index++)
+        {
+        if (GetChild(index, childPtr) == KErrNone)
+            {
+            childPtr->ParentDeleted(*((CParentIntfc*)this));
+            }
+        }
+    iChildrenList.Close();
+    }
+
+TInt CParentIntfc::GetChildCount()
+    {
+    return iChildrenList.Count();
+    }
+
+TInt CParentIntfc::GetChild( TInt aIndex, CChildIntfc*& aChild )
+    {
+    TInt status(KErrArgument);
+    if ( (0 <= aIndex ) && ( aIndex < iChildrenList.Count() ) )
+        {
+        aChild = iChildrenList[aIndex];
+        status = KErrNone;
+        }
+    return status;
+    }
+
+TInt CParentIntfc::SetChild( CChildIntfc& aChild )
+    {
+    TInt status(KErrAlreadyExists);
+    if ( iChildrenList.Find(&aChild) == KErrNotFound )
+        {
+        status = iChildrenList.Append(&aChild);
+        }
+    return status;
+    }
+
+void CParentIntfc::ChildDeleted( CChildIntfc& aChild )
+    {
+    TInt index(iChildrenList.Find(&aChild));
+    if ( index != KErrNotFound )
+        {
+        iChildrenList.Remove(index);
+        }
+    }
+
+CChildIntfc::~CChildIntfc()
+    {
+    if ( iParent )
+        {
+        iParent->ChildDeleted(*((CChildIntfc*)this));
+        }
+    }
+
+void CChildIntfc::ParentDeleted( CParentIntfc& aParent )
+    {
+    if ( iParent == &aParent )
+        {
+        iParent = NULL;
+        }
+    }
+
+TInt CChildIntfc::GetParent( CParentIntfc*& aParent )
+    {
+    TInt status(KErrNotFound);
+    if ( iParent )
+        {
+        aParent = iParent;
+        status = KErrNone;
+        }
+    return status;
+    }
+
+TInt CChildIntfc::SetParent( CParentIntfc& aParent )
+    {
+    TInt status(KErrAlreadyExists);
+    if ( !iParent )
+        {
+        iParent = &aParent;
+        status = KErrNone;
+        }
+    return status;
+    }
+
+// End of file