1 /*

     2 * Copyright (c) 2009 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:  Shutdown observer

    15 *

    16 */

    17 

    18 #ifndef WDSELFSHUTDOWNOBSERVER_H

    19 #define WDSELFHUTDOWNOBSERVER_H

    20 

    21 #include <e32base.h>

    22 #include <w32std.h>

    23 #include <e32property.h> 

    24 

    25 

    26 /**

    27  * Observer interface for signaling the need for shutdown

    28  */

    29 class MWDSelfShutdownObserver

    30     {

    31 public:

    32 

    33     virtual void SelfShutdownNotification() = 0;

    34         

    35     };

    36 

    37 /**

    38  *  Active object for observing P&S keys

    39  *

    40  *  @since S60 v5.0

    41  */

    42 class CWDSelfShutdownObserver  : public CActive

    43     {

    44 public:

    45 

    46     /**

    47      * Two-phased constructor.

    48      *

    49      * @since S60 v5.0

    50      * @return Instance of CTMShutdownObserver.

    51      */

    52     IMPORT_C static CWDSelfShutdownObserver* NewL( MWDSelfShutdownObserver& aObserver/*, const TUid& aKeyCategory*/ );

    53 

    54     /**

    55      * Destructor

    56      *

    57      * @since S60 v5.0

    58      */

    59     virtual ~CWDSelfShutdownObserver();

    60     

    61 protected:

    62 

    63     /**

    64      * Handles an active object's request completion event.

    65      *

    66      * @since S60 v5.0

    67      */

    68     void RunL();

    69 

    70     /**

    71      * Implements cancellation of an outstanding request.

    72      *

    73      * @since S60 v5.0

    74      */

    75     void DoCancel();

    76     

    77     TInt RunError( TInt aError );

    78 

    79 private:

    80 

    81     /**

    82      * C++ default constructor

    83      *

    84      * @since S60 v5.0

    85      * @return Instance of CShutdownObserver.

    86      */

    87     CWDSelfShutdownObserver( MWDSelfShutdownObserver& aObserver/*, const TUid& aKeyCategory*/ );

    88 

    89     /**

    90      * Symbian 2nd phase constructor can leave.

    91      *

    92      * @since S60 v5.0

    93      */

    94     void ConstructL();

    95 

    96 private:

    97     

    98     // not own

    99     MWDSelfShutdownObserver& iObserver;

   100     

   101     /*const TUid& iKeyCategory;*/

   102     RProperty iProperty;

   103 };

   104 

   105 #endif // SHUTDOWNOBSERVER_H