1 /*

     2 * Copyright (c) 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: 

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef CAMDISKCHANGELISTENER_H

    21 #define CAMDISKCHANGELISTENER_H

    22 

    23 //  INCLUDES

    24 #include <f32file.h>

    25 #include "CamPropertyWatcher.h"

    26 #include "CamPropertyObserver.h"

    27 #include "CamTimer.h"

    28 

    29 // FORWARD DECLARATIONS

    30 class MCamDriveChangeNotifierObserver;

    31 

    32 // CLASS DECLARATION

    33 

    34 /**

    35 *  Mmc Change Notifier.

    36 *

    37 *  @since 5.0

    38 */

    39 class MCamDriveChangeNotifierObserver

    40     {

    41     public:

    42         enum TCamDriveChangeType

    43             {

    44             EDriveDismount,

    45             EDriveMount,

    46             EDriveUSBMassStorageModeOn,

    47             EDriveUSBMassStorageModeOff

    48             };

    49             

    50     public: // New functions

    51 

    52         /**

    53         * This method is used to notify changes.

    54         */

    55         virtual TInt DriveChangeL( TCamDriveChangeType aType ) = 0;

    56         

    57 

    58     protected:

    59 

    60         /**

    61         * Destructor.

    62         */

    63         virtual ~MCamDriveChangeNotifierObserver() {}

    64 

    65     };

    66 

    67 /**

    68 *  Mmc Change Notifier.

    69 *

    70 *  @since 5.0

    71 */

    72 class CCamDriveChangeNotifier : public CBase, 

    73                                 public MPropertyObserver

    74 

    75     {

    76     private:

    77         class CCamDiskChangeListener : public CActive

    78             {            

    79             public:

    80                 static CCamDiskChangeListener* NewLC( 

    81                      RFs& aFs,

    82                      TDriveNumber aDrive,

    83                      CCamDriveChangeNotifier& aObserver );

    84                 ~CCamDiskChangeListener();

    85                 

    86                 void Start();

    87                 void Stop();

    88             

    89             protected:

    90                 CCamDiskChangeListener( 

    91                      RFs& aFs,

    92                      TDriveNumber aDrive,

    93                      CCamDriveChangeNotifier& aObserver );

    94                 

    95             private:

    96                 /**

    97                 * From CActive

    98                 */

    99                 void DoCancel();

   100 

   101                 /**

   102                 * From CActive

   103                 */

   104                 void RunL();

   105                 

   106             private:

   107                 RFs& iFs;

   108                 TDriveNumber iDrive;

   109                 CCamDriveChangeNotifier& iObserver;

   110             };

   111         

   112     public:  // Constructors and destructor

   113 

   114         /**

   115         * Two-phased constructor.

   116         */

   117         static CCamDriveChangeNotifier* NewL(

   118                                 RFs& aFs,

   119                                 MCamDriveChangeNotifierObserver& aObserver  );

   120 

   121         /**

   122         * Destructor.

   123         */

   124         ~CCamDriveChangeNotifier();

   125 

   126     public:

   127         /**

   128         * Called from listeners

   129         */

   130         TInt NotifyChangeL( 

   131                 MCamDriveChangeNotifierObserver::TCamDriveChangeType aType );

   132 

   133         /**

   134         * Called by the observer when pending dismount can be done.

   135         */     

   136         void SendAllowDismount();        

   137 

   138         // New functions

   139 

   140         void StartMonitoring();

   141         

   142         void CancelMonitoring();

   143         

   144         void USBTimerCallBackL();

   145         

   146         static TInt USBTimerCallBack( TAny* aPtr ); 

   147 

   148     public: // From MPropertyObserver

   149         /**

   150         * The value of a watched property has changed

   151         * @param aCategory The category of the property

   152         * @param aKey the Identifier of the property

   153         */    

   154         void HandlePropertyChangedL( const TUid& aCategory, const TUint aKey );

   155         

   156     private:

   157 

   158         /**

   159         * C++ default constructor.

   160         */

   161         CCamDriveChangeNotifier( 

   162                                 RFs& aFs,

   163                                 MCamDriveChangeNotifierObserver& aObserver );

   164         

   165         void ConstructL();

   166 

   167     private:    // Data

   168         // Ref.

   169         MCamDriveChangeNotifierObserver& iObserver;

   170 

   171         // Ref. File server session

   172         RFs& iFs;

   173 

   174         RPointerArray<CCamDiskChangeListener> iListeners;

   175         

   176         CCamPropertyWatcher* iUsbMSWatcher;

   177         

   178         TBool iMassStorageModeOn;

   179         

   180         CCamTimer* iUSBTimer;

   181 

   182     };

   183 

   184 #endif      // CAMDISKCHANGELISTENER_H

   185 

   186 // End of File