--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commonservices/PlatformEnv/disknotifyhandler/inc/diskwatcherbase.h	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,143 @@
+/*
+* Copyright (c) 2007 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:  Base class for disk watchers.
+*
+*/
+
+
+
+#ifndef C_DISK_WATCHER_BASE_H
+#define C_DISK_WATCHER_BASE_H
+
+//  INCLUDES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class MDiskNotifyHandlerCallback;
+class RFs;
+
+// CLASS DECLARATION
+/**
+* Class provides base functionality of disk watcher.
+*
+* @since S60 5.0
+*/
+NONSHARABLE_CLASS(CDiskWatcherBase) : public CActive
+    {
+protected:
+    /**
+    * C++ constructor.
+    *
+    * @since S60 5.0
+    * @param aCallback Reference to callback
+    * @param aFs Reference to open file server session
+    */
+    CDiskWatcherBase(
+        MDiskNotifyHandlerCallback& aCallback,
+        RFs& aFs );
+
+    /**
+    * Destructor.
+    */
+    ~CDiskWatcherBase();
+
+private: // From CActive
+    void RunL();
+    TInt RunError( TInt aError );
+    void DoCancel();
+
+private:
+    /**
+    * Notifies watcher error
+    *
+    * @since S60 5.0
+    * @param aError A system wide error code
+    * @param aKilled A reference to indicate if watcher has been killed by callback
+    */
+    virtual void WatcherError( TInt aError, const TBool& aKilled ) = 0;
+
+    /**
+    * Reactivites watcher to catch notifications
+    *
+    * @since S60 5.0
+    */
+    virtual void ReactivateWatcher() = 0;
+
+    /**
+    * Runs watcher action on notification
+    *
+    * @since S60 5.0
+    * @param aKilled A reference to indicate if watcher has been killed by callback
+    */
+    virtual void RunWatcher( const TBool& aKilled ) = 0;
+
+    /**
+    * Cancels watcher
+    *
+    * @since S60 5.0
+    */
+    virtual void CancelWatcher() = 0;
+
+protected:
+    /**
+    * Returns open file server session. 
+    *
+    * @since S60 5.0
+    * @return A reference to open file server session.
+    */
+    inline RFs& Fs();
+
+    /**
+    * Returns callback. 
+    *
+    * @since S60 5.0
+    * @return A reference to callback.
+    */
+    inline MDiskNotifyHandlerCallback& Callback();
+
+    /**
+    * Compares two items
+    *
+    * @since S60 5.0
+    * @param aItem1 Refefence to first item
+    * @param aItem1 Refefence to second item
+    * @return Comparison result
+    */
+    template < class T >
+    inline static TInt Compare( const T& aItem1, const T& aItem2 );
+
+private:
+    /**
+     * Callback instance. Not owned.
+     */
+    MDiskNotifyHandlerCallback& iCallback;
+
+    /**
+     * Open file server session. Not owned.
+     */
+    RFs& iFs;
+
+    /**
+     * Indicates if instance is killed from callback. Not owned.
+     */
+    TBool* iKilled;
+
+    };
+
+// Include inline method implementations
+#include "diskwatcherbase.inl"
+
+#endif // C_DISK_WATCHER_BASE_H   
+
+// End of File