--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/inc/ncdpurchaseoperationobserver.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,86 @@
+/*
+* 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:   ?Description
+*
+*/
+	
+
+#ifndef M_NCDPURCHASEOPERATIONOBSERVER_H
+#define M_NCDPURCHASEOPERATIONOBSERVER_H
+
+#include <e32cmn.h>
+
+#include "catalogsarray.h"
+
+class MNcdPurchaseOperation;
+class TNcdProgress;
+class MNcdQuery;
+
+/**
+ *  Observer interface for purchase operations
+ *
+ *  Purchase operation users should implement this interface to be able to
+ *  receive purchase operation callbacks.
+ *
+ *  
+ *  @see MNcdPurchaseOperation
+ */
+class MNcdPurchaseOperationObserver
+    {
+    
+public:
+
+    /**
+     * Called when a purchase operation has progressed.
+     *
+     * 
+     * @param aOperation The operation that sent the event.
+     * @param aProgress Progress of the operation.
+     */
+    virtual void PurchaseProgress( MNcdPurchaseOperation& aOperation,
+        TNcdProgress aProgress ) = 0;
+
+
+    /**
+     * Called when a query has been received for an operation.
+     *
+     * @note Querys need to be completed with MNcdOperation::CompleteQueryL()
+     *       to continue the operation! Alternatively, the operation must be
+     *       cancelled.
+     *
+     * 
+     * @param aOperation Uncounted reference to the operation that sent
+     *        the event.
+     * @param aQuery Pointer to the query object that needs to be
+     *        completed. Counted, Release() must be called after use.
+     * @see MNcdOperation::CompleteQueryL()
+     */
+    virtual void QueryReceived( MNcdPurchaseOperation& aOperation,
+        MNcdQuery* aQuery ) = 0;
+    
+
+    /**
+     * Called when an operation has been completed.
+     *
+     * 
+     * @param aOperation The operation that sent the event.
+     * @param aError Error code for operation completion. 
+     *               KErrNone for successful completion, otherwise a system
+     *               wide error code.
+     */
+    virtual void OperationComplete( MNcdPurchaseOperation& aOperation,
+        TInt aError ) = 0;
+    };
+    
+#endif //  M_NCDPURCHASEOPERATIONOBSERVER_H