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:  Accessory observer implementation for fmtx watcher plugin.

    15 *

    16 */

    17 

    18 

    19 #ifndef HWRMFMTXACCOBSERVER_H

    20 #define HWRMFMTXACCOBSERVER_H

    21 

    22 //  INCLUDES

    23 #include <e32base.h>

    24 #include <e32property.h>

    25 #include "hwrmfmtxconnobserver.h"

    26 

    27 // CLASS DECLARATIONS

    28 /**

    29 * Active object for obtaining notification of changes in Accessory connections.

    30 *

    31 * @since S60 3.2

    32 * @lib fmtxwatcherplugin.lib

    33 */

    34 NONSHARABLE_CLASS(CHWRMFmtxAccObserver) : public CActive, public MHWRMFmtxConnObserver

    35 	{

    36 public: // From MFmtxConnObserver

    37 

    38     /**

    39     * This is a two-phase constructor method that is used to create a new

    40     * instance for listening to the changes in Accessory connections.

    41     *

    42     * @param aObserver A reference to an observer instance.

    43     * @return A pointer to a new instance of the CAccObserver class.

    44     *

    45     * @leave One of the Symbian OS error codes.

    46     */

    47     static CHWRMFmtxAccObserver* NewL( MHWRMFmtxConnObserverCallback& aObserver );

    48     

    49     /**

    50     * Destructor.

    51     */

    52     ~CHWRMFmtxAccObserver();

    53     

    54     

    55     // form MHWRMFmtxConnObserver

    56     TBool GetStatusL();

    57     void StartObservingL();

    58     void StopObserving();

    59 	

    60 private:

    61 

    62     /**

    63     * C++ default constructor.

    64     *

    65     * @param aObserver A reference to an observer instance.

    66     */

    67     CHWRMFmtxAccObserver( MHWRMFmtxConnObserverCallback& aObserver );

    68     

    69     /**

    70     * By default Symbian OS constructor is private.

    71     */

    72     void ConstructL();

    73     

    74     /**

    75     * Orders notification for wired accessory connection status change.

    76     */

    77     void OrderAccessoryNotification();

    78 

    79 protected:

    80     

    81     // from CActive

    82     void RunL();

    83     void DoCancel();

    84 

    85 private:

    86 

    87     /**

    88     * Publish&Subscribe key session.     

    89     */

    90     RProperty iProperty;

    91     

    92     /**

    93     * Response callback pointer.

    94     */    

    95     MHWRMFmtxConnObserverCallback& iCallback;

    96     

    97     /**

    98     * Connection status.

    99     * Used for filtering out audio routing change notifications.

   100     */ 

   101     TBool iConnected;

   102 	};

   103 

   104 

   105 #endif // HWRMFMTXACCOBSERVER_H

   106             

   107 // End of File