--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/app/MVPbkExpandable.h	Wed Mar 31 12:33:34 2010 +0100
@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 2004-2007 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:  An interface for objects that can be expanded to a view
+*
+*/
+
+
+#ifndef MVPBKEXPANDABLE_H
+#define MVPBKEXPANDABLE_H
+
+// INCLUDES
+#include <e32std.h>
+
+// FORWARD DECLARATIONS
+class MVPbkContactViewBase;
+class MVPbkContactViewObserver;
+class MVPbkFieldTypeList;
+
+// CLASS DECLARATIONS
+
+/**
+ * An interface for objects that can be expanded to a view
+ *
+ * E.g. a view contact that represents a group can be expanded
+ * to the group members view.
+ * @see MVPbkViewContact
+ */
+class MVPbkExpandable
+    {
+    protected: // destructor
+        /**
+         * Destructor.
+         */
+        virtual ~MVPbkExpandable() { }
+
+    public: // interface
+        /**
+         * Returns an expanded view that is constructed asynchronously.
+         *
+         * A client must wait the expanded view to become ready before
+         * usage.
+         *
+         * @param aObserver A contact view observer
+         * @param aSortOrder A contact view sort order.
+         * @return the expanded view.
+         * @return The child view.
+         */
+        virtual MVPbkContactViewBase* ExpandLC(
+            MVPbkContactViewObserver& aObserver,
+            const MVPbkFieldTypeList& aSortOrder ) const =0;
+
+        /**
+         * Returns an extension point for this interface or NULL.
+         *
+         * @param aExtensionUid no extensions defined currently.
+         * @return an extension point for this interface or NULL.
+         */
+        virtual TAny* ExpandableExtension( TUid /*aExtensionUid*/ ) 
+                { return NULL; }
+    };
+
+#endif // MVPBKEXPANDABLE_H
+
+//End of file