--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/internetradio2.0/uiinc/irdiskspacewatcher.h	Mon Apr 19 14:01:53 2010 +0300
@@ -0,0 +1,136 @@
+/*
+* Copyright (c) 2005-2006 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:  Header for CIRDiskSpaceWatcher
+*
+*/
+
+#ifndef CIRDISKSPACEWATCHER_H
+#define CIRDISKSPACEWATCHER_H
+
+#include <e32base.h>
+#include <f32file.h>
+
+#include "irdiskspacewatcherobserver.h"
+
+class CIRDiskSpaceSession;
+
+// Default drive. Used to save for example settings and cache files.
+const TDriveNumber KVRDefaultDrive = EDriveC;
+
+/**
+ *  CIRDiskSpaceWatcher. Watcher of disk space on defined disks.
+ *
+ *  Observes a disk and notifies the observer if the supplied critical disk 
+ *  space limit is reached. 
+ */
+NONSHARABLE_CLASS( CIRDiskSpaceWatcher ): public CBase, public MIRDiskSpaceWatcherObserver
+    {
+    
+public:  // Methods
+
+    /**
+     * Static constructor.     
+     * 
+     * @param aCriticalLevel, critical disk space level
+     * @param aDiskSpaceWatcherObserver observer of disk space status     
+     */
+    static CIRDiskSpaceWatcher* NewL( const TInt64& aCriticalLevel, 
+        MIRDiskSpaceWatcherObserver& aDiskSpaceWatcherObserver );
+    
+    /**
+     * Destructor.
+     */
+    virtual ~CIRDiskSpaceWatcher();
+
+    /**
+     * IsBelowCriticalLevel Returns whether or disk defined by parameter 
+     * contains less than the critical level free disk space.
+     * Please note that StartObservingDriveL must have been called 
+     * before calling this. Otherwise method will return EFalse whetever
+     * disk space is below critical level or not.
+     *  
+     * @param aDriveNumber drive which space is checked
+     * @return ETrue if there is less free disk space than the critical 
+     * level, otherwise EFalse.
+     */
+    TBool IsBelowCriticalLevel( const TDriveNumber& aDriveNumber ) const;
+                        
+    /**
+     * Starts observing space of drive which is given as parameter
+     *
+     * @param aDriveNumber drive which will be observed
+     */
+    void StartObservingDriveL( const TDriveNumber& aDriveNumber );            
+            
+    /**
+     * Stops observing space of drive which is given as parameter.
+     * Please note that if drive is observed by some other object 
+     * it will be observed until all objects have asked 
+     * VRDiskSpaceWatcher to stop observing that drive.
+     *
+     * @param aDriveNumber drive which observing will be stopped. 
+     */
+    void StopObservingDrive( const TDriveNumber& aDriveNumber );    
+    
+    // From base class MIRDiskSpaceWatcherObserver
+    /** 
+     * From MIRDiskSpaceWatcherObserver
+     *
+     * @see MIRDiskSpaceWatcherObserver::NotifyLowDiskSpaceL()
+     */
+    
+    void NotifyLowDiskSpaceL();
+            
+protected:  
+
+private: 
+
+    /**
+     * C++ default constructor.
+     * 
+     * @param aCriticalLevel, critical disk space level
+     * @param aDiskSpaceWatcherObserver observer of disk space status
+     */
+    CIRDiskSpaceWatcher( const TInt64& aCriticalLevel, 
+        MIRDiskSpaceWatcherObserver& aDiskSpaceWatcherObserver );
+
+    /**
+     * By default Symbian 2nd phase constructor is private.
+     */
+    void ConstructL();
+
+private:    // Data
+
+    /** 
+     * Handle to the file system. 
+     */
+    RFs iFs;
+
+    /** 
+     * Critical disk space level. 
+     */
+    const TInt64 iCriticalLevel;
+
+	/** 
+	 * The observer to be notified when critical disk space limit is reached.
+	 */
+    MIRDiskSpaceWatcherObserver& iObserver;
+
+    /** 
+     * Contains active objects which do the actual disk space checking 
+     */
+    RPointerArray<CIRDiskSpaceSession> iDiskSpaceSessions;
+    };
+
+#endif      // IRDISKSPACEWATCHER_H