upnpmediaserver/mediaserverengine/inc/upnpdiskremovedetector.h
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     1 /** @file
       
     2 * Copyright (c) 2005-2008 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies  this distribution, and is available 
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  Detects remove disk event.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef C_CUPNPDISKREMOVEDETECTOR_H
       
    20 #define C_CUPNPDISKREMOVEDETECTOR_H
       
    21 
       
    22 // INCLUDE FILES
       
    23 #include <e32base.h>
       
    24 #include <f32file.h>
       
    25 
       
    26 // FORWARD DECLARATIONS
       
    27 class CUpnpMediaServer;
       
    28 
       
    29 
       
    30 // CLASS DECLARATION
       
    31 /**
       
    32  *  Class is responsible for detecting removal/unmounting of a disk from file system
       
    33  *  @since S60 v3.2
       
    34  */
       
    35 class CUpnpDiskRemoveDetector : public CActive
       
    36     {
       
    37 public: // New methods
       
    38 
       
    39     /**
       
    40     * Two-phased constructor.
       
    41     * @param aObserver callback interface
       
    42     */
       
    43     static CUpnpDiskRemoveDetector* NewLC( CUpnpMediaServer* aObserver );
       
    44 
       
    45     /**
       
    46     * Two-phased constructor.
       
    47     * @param aObserver callback interface
       
    48     */
       
    49     static CUpnpDiskRemoveDetector* NewL( CUpnpMediaServer* aObserver );
       
    50 
       
    51     /**
       
    52     * Destructor.
       
    53     */
       
    54     ~CUpnpDiskRemoveDetector();
       
    55 
       
    56     /**
       
    57      * Start watching for events - asynchronous method
       
    58      */	
       
    59     void StartL();
       
    60 
       
    61 protected: // From CActive
       
    62 
       
    63     /**
       
    64      * From CActive, called when event occur.
       
    65      */
       
    66     void RunL();
       
    67 
       
    68     /**
       
    69      * From CActive, cancel watching for incoming events.
       
    70      */
       
    71     void DoCancel();
       
    72 
       
    73     /**
       
    74      * From CActive, called when RunL leaves.
       
    75      * @param aError error code
       
    76      */
       
    77     TInt RunError( TInt aError );
       
    78 
       
    79 private: // New methods
       
    80     /**
       
    81     * C++ default constructor.
       
    82     * @param aObserver callback interface
       
    83     */
       
    84     CUpnpDiskRemoveDetector( CUpnpMediaServer* aObserver );
       
    85 
       
    86     /**
       
    87      * Second phase constructor
       
    88      */
       
    89     void ConstructL();
       
    90 
       
    91     /**
       
    92      * Check if the upload direcotory is valid
       
    93      */
       
    94     void CheckUploadDirectoryL();
       
    95     
       
    96     /**
       
    97      * Subscribe this object for file system disk event
       
    98      */
       
    99     void SubscribeForDiskEvent();
       
   100 
       
   101 private: // Data
       
   102 
       
   103     // Interface monitor
       
   104     RFs iFs;
       
   105 
       
   106     //Callback interface
       
   107     CUpnpMediaServer* iObserver;
       
   108 
       
   109     };
       
   110 
       
   111 #endif // C_CUPNPDISKREMOVEDETECTOR_H