--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtinternetradio/irqdiskspacewatcher/inc/irqdiskspaceobserver.h	Mon Apr 19 14:01:53 2010 +0300
@@ -0,0 +1,108 @@
+/*
+* 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 IRQDISKSPACEOBSERVER_H_
+#define IRQDISKSPACEOBSERVER_H_
+
+#include <e32base.h>  // CActive
+#include <f32file.h>  // RFs
+
+class MIRQDiskSpaceObserver;
+
+/**
+ * Defines disk space observer. 
+ *
+ * Observers defined disk and notifies observer if disk space drops below
+ * certain level.
+ */
+class  IRQDiskSpaceObserver  : public CActive
+    {
+
+public:
+
+    /**
+     * Static constructor 
+     *
+     * @param aObserver Observer who is interested if disk 
+     * space drops below certain level.
+     */
+    static IRQDiskSpaceObserver* NewL(MIRQDiskSpaceObserver* aObserver);
+
+    /**
+     * Destructor
+     */
+    ~IRQDiskSpaceObserver();
+    
+    /**
+     * 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.
+     */
+    bool isBelowCriticalLevel(const TInt64 aCriticalLevel) const;
+       
+protected:
+    /**
+     * From CActive 
+     */
+    void DoCancel();
+    void RunL();
+
+private:
+
+    /**
+     * C++ constructor.  
+     */
+    IRQDiskSpaceObserver(MIRQDiskSpaceObserver* aObserver);
+
+    /**
+     * Second phase constructor
+     */
+    void ConstructL();
+    
+    void run();
+    
+private: 
+
+    /** 
+     * The observer to be notified when critical disk space limit is reached. 
+     */
+    MIRQDiskSpaceObserver* iObserver;
+
+    /** 
+     * Critical disk space level. 
+     */
+    TInt64 iCriticalLevel;
+
+    /** 
+     * Handle to the file system. 
+     */
+    RFs iFs;
+};
+
+
+#endif // IRQDISKSPACEOBSERVER_H_