--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonebookui/Phonebook/Engine/inc/MPbkCompressionStrategy.h	Tue Feb 02 10:12:17 2010 +0200
@@ -0,0 +1,83 @@
+/*
+* Copyright (c) 2002 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: 
+*      Interface for Phonebook database compression strategy.
+*
+*/
+
+
+#ifndef __MPbkCompressionStrategy_H__
+#define __MPbkCompressionStrategy_H__
+
+// INCLUDES
+#include <e32def.h>
+
+
+// FORWARD DECLARATIONS
+class MPbkCompressUi;
+
+
+// CLASS DECLARATION
+
+/**
+ * Abstract interface for Phonebook database compression strategy.
+ */
+class MPbkCompressionStrategy
+    {
+    public: // Interface
+        /**
+         * Sets the compress UI.
+		 * @param aComressUi the compress UI
+         */
+        virtual void SetCompressUi(MPbkCompressUi* aCompressUi) =0;
+
+        /**
+         * Returns ETrue if the database could use a compression.
+         */
+        virtual TBool CheckCompress() =0;
+
+        /**
+         * Returns true if compression is currently enabled.
+         */
+        virtual TBool IsCompressionEnabled() =0;
+
+        /**
+         * Compresses the database asynchronously. Implementation can decide
+         * whether to start compression or not. Calls back the compress UI on 
+         * the compression progress.
+         */
+        virtual void CompressL() =0;
+
+        /**
+         * Stops any compression currently executing.
+         */
+        virtual void CancelCompress() =0;
+
+        /**
+         * Releases this object and any resources it owns.
+         */
+        virtual void Release() =0;
+
+    protected:
+        /**
+         * Protected destructor. Clients of this interface should call
+         * Release() when they no longer need it.
+         */
+        virtual ~MPbkCompressionStrategy() { }
+    };
+
+
+#endif // __MPbkCompressionStrategy_H__
+
+// End of File