--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menucontentsrv/srvinc/mcsfreespaceobserver.h	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,102 @@
+/*
+* Copyright (c) 2008 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:  
+*
+*/
+
+#ifndef CMCSFREESPACEOBSERVER_H
+#define CMCSFREESPACEOBSERVER_H
+
+#include <e32base.h>	// For CActive, link against: euser.lib
+#include <f32file.h>
+
+/**
+ * Interface for monitoring free space.
+ *
+ * @since S60 v5.0
+ */
+class MMcsFreeSpaceObserver
+	{
+public:
+    /**
+     * Handles free space threshold events.
+     * It must be implemented in derived clesses.
+     */
+	virtual void HandleFreeSpaceEventL() = 0;
+    static const TInt64 EFreeDiskSpace = 40*1024;
+	};
+
+
+/**
+ *  Free space Observer Interface.
+ *  @lib mcsmenu.lib
+ *  @since S60 v5.0
+ */
+NONSHARABLE_CLASS(CMcsFreeSpaceObserver) : public CActive
+	{
+public:
+	// Cancel and destroy
+	~CMcsFreeSpaceObserver();
+
+	// Two-phased constructor.
+	static CMcsFreeSpaceObserver* NewL(MMcsFreeSpaceObserver& aCallback,
+	    TInt64 aFreeDiskSpace = MMcsFreeSpaceObserver::EFreeDiskSpace,
+	    TInt aDrive=EDriveC);
+
+	// Two-phased constructor.
+	static CMcsFreeSpaceObserver* NewLC(MMcsFreeSpaceObserver& aCallback,
+	    TInt64 aFreeDiskSpace = MMcsFreeSpaceObserver::EFreeDiskSpace,
+	    TInt aDrive = EDriveC);
+
+private:
+	// C++ constructor
+    CMcsFreeSpaceObserver(MMcsFreeSpaceObserver& aCallback,
+        TInt64 aFreeDiskSpace,
+        TInt aDrive);
+
+	// Second-phase constructor
+	void ConstructL();
+
+private:
+	// From CActive
+	// Handle completion
+	void RunL();
+
+	void DoCancel();
+
+	TInt RunError(TInt aError);
+
+private:
+    /*
+     * Observed drive.
+     */
+    TInt iDrive;
+    /*
+     * Free space threshold (bytes).
+     */
+    TInt64 iFreeDiskSpace;
+    /*
+     * A handle to a file server session.
+     */
+	RFs iFs;
+	/*
+	 * An object of a class implementing callback
+	 * function (HandleFreeSpaceEventL)
+	 * of MMcsFreeSpaceObserver interface.
+	 */
+	MMcsFreeSpaceObserver& iCallback;
+	
+	};
+
+#endif // CMCSFREESPACEOBSERVER_H