diff -r 2e1adbfc62af -r ee64f059b8e1 qtinternetradio/irqsystemeventhandler/inc/irdiskspaceobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtinternetradio/irqsystemeventhandler/inc/irdiskspaceobserver.h	Fri May 14 15:43:29 2010 +0300
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2009 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:  Contains logic for watching certain disk's space
+ *
+ */
+
+#ifndef CIRDISKSPACEOBSERVER_H
+#define CIRDISKSPACEOBSERVER_H
+
+#include <e32base.h>  // CActive
+#include <f32file.h>  // RFs
+
+class MIRDiskSpaceObserverInterface;
+
+/**
+ * Defines disk space observer. 
+ *
+ * Observers defined disk and notifies observer if disk space drops below
+ * certain level.
+ */
+class CIRDiskSpaceObserver : public CActive
+{
+
+public:
+
+    /**
+     * Static constructor 
+     *
+     * @param aObserver Observer who is interested if disk 
+     * space drops below certain level.
+     */
+    static CIRDiskSpaceObserver* NewL(MIRDiskSpaceObserverInterface* aObserver);
+
+    /**
+     * Destructor
+     */
+    ~CIRDiskSpaceObserver();
+
+    /**
+     * Start Monitoring 
+     */
+    void Start(const TInt64 aCriticalLevel);
+
+    /**
+     * Tells observed critical level.
+     *
+     * @return critical level which is been observed by this session.
+     */
+    TInt64 CriticalLevel() const;
+
+    /**
+     * Returns whether or disk defined by parameter 
+     * contains less than the critical level free disk space.
+     */
+    TBool IsBelowCriticalLevel(const TInt64 aCriticalLevel) const;
+
+protected:
+    /**
+     * From CActive 
+     */
+    void DoCancel();
+    void RunL();
+
+private:
+
+    /**
+     * C++ constructor.  
+     */
+    CIRDiskSpaceObserver(MIRDiskSpaceObserverInterface* aObserver);
+
+    /**
+     * Second phase constructor
+     */
+    void ConstructL();
+
+    void Run();
+
+private:
+
+    /** 
+     * The observer to be notified when critical disk space limit is reached. 
+     */
+    MIRDiskSpaceObserverInterface* iObserver;
+
+    /** 
+     * Critical disk space level. 
+     */
+    TInt64 iCriticalLevel;
+
+    /** 
+     * Handle to the file system. 
+     */
+    RFs iFs;
+};
+
+#endif // CIRDISKSPACEOBSERVER_H