1 /*

     2 * Copyright (c) 2004-2006 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 BTHIDPSKEYWATCHER_H_

    21 #define BTHIDPSKEYWATCHER_H_

    22 //  INCLUDES

    23 #include <e32base.h>

    24 #include <e32property.h>

    25 

    26 class MMouseCursorStatusObserver;

    27 

    28 /*

    29 * An abstarct interface that defines a callback method

    30 * for the hid mouse cursor observer. CursorStatusChangedL

    31 * is called by CBTMouseCursorStatusObserver when the mouse device 

    32 * connection state has changed. aStatus represents the new status 

    33 * value.

    34 */

    35 class MMouseCursorStatusObserver

    36     {

    37     public:

    38     virtual void MouseCursorStatusChangedL(TInt aStatus) = 0;

    39     };

    40     

    41 /*

    42 * An observer that monitors KPSUidBluetoothSapConnectionState

    43 * P&S key. The clients can call SubscribeCursorStatusL in order to 

    44 * get a chenged new SAP connection status returned via 

    45 * MSapStatusObserver::SapStatusChangedL.

    46 */ 

    47 class CBTMouseCursorStatusObserver : public CActive

    48     {

    49 public:

    50     /**

    51     * Two-phased constructor.

    52     */

    53     static CBTMouseCursorStatusObserver* NewL();

    54     /**

    55     * Destructor.

    56     */

    57     virtual ~CBTMouseCursorStatusObserver();

    58     

    59     /**

    60     * Starts listening KPSUidBluetoothSapConnectionState P&S key.

    61     * When the key value is changed, the new state is indicated

    62     * through the observer interface (MSapStatusObserver).

    63     */

    64     void SubscribeMouseCursorStatusL(MMouseCursorStatusObserver* aObserver);

    65       

    66 private:

    67     /**

    68     * Two-Phase constructor

    69     */

    70     void ConstructL();

    71     

    72     /**

    73     * Default constructor

    74     */

    75     CBTMouseCursorStatusObserver();

    76     

    77     // From CActive

    78     virtual void DoCancel();

    79     virtual void RunL();

    80       

    81 private:

    82     MMouseCursorStatusObserver* iObserver;

    83     RProperty iProperty;

    84     };

    85 

    86 

    87 #endif /* BTHIDPSKEYWATCHER_H_ */