1 /*

     2 * Copyright (c) 2005 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:  Group for volume controls

    15 *

    16 */

    17 

    18 

    19 #ifndef CAMMSVOLUMECONTROLGROUP_H

    20 #define CAMMSVOLUMECONTROLGROUP_H

    21 

    22 //  INCLUDES

    23 #include <e32base.h>

    24 #include "cammscontrolgroup.h"

    25 

    26 // FORWARD DECLARATIONS

    27 class CAMMSVolumeControl;

    28 

    29 // CONSTANTS

    30 _LIT(KAMMSVolumeControlClassName, ".amms.control.VolumeControl");

    31 

    32 // CLASS DECLARATION

    33 

    34 /**

    35  *  Group for volume controls.

    36  *  This volume control group can be used with many CAMMSVolumeControl

    37  *  instances. Controls that belong to this group are identified with

    38  *  aClassName parameter given to the NewL / NewLC method.

    39  *

    40  *  @since 3.0

    41  */

    42 NONSHARABLE_CLASS(CAMMSVolumeControlGroup): public CAMMSControlGroup

    43 {

    44 public:  // Constructors and destructor

    45 

    46     /**

    47      * Two-phased constructor.

    48      * @param aControlName Class name that identifies controls

    49      * belonging tothis control group.

    50      */

    51     static CAMMSVolumeControlGroup* NewLC(const TDesC& aControlName);

    52 

    53     /**

    54      * Destructor.

    55      */

    56     ~CAMMSVolumeControlGroup();

    57 

    58 public: // New functions

    59     /**

    60      * Sets the current volume.

    61      *

    62      * @param aVolume Volume to be set.

    63      */

    64     void SetVolumeL(TInt aVolume);

    65 

    66 private: // New functions

    67     /**

    68      * Gets control. Ownership is not tranferred.

    69      *

    70      * @param aIndex Control index.

    71      */

    72     CAMMSVolumeControl* TypeSafeControl(TInt aIndex) const;

    73 

    74 public: // Functions from base class

    75     /**

    76      * Returns class name that identifies this control group.

    77      *

    78      * @return Control group name.

    79      */

    80     const TDesC16& ClassName();

    81 

    82 protected: // From

    83     /**

    84      * Called by when a new player is added

    85      *

    86      * @param aPlayer   The player being added

    87      * @param aControl  The player's control relevant to this group

    88      */

    89     void NotifyPlayerAddedL(CMMAPlayer *aPlayer, CMMAControl* aControl);

    90 

    91 private:

    92     /**

    93      * C++ default constructor.

    94      * @param aControlName Class name that identifies controls

    95      * belonging tothis control group.

    96      */

    97     CAMMSVolumeControlGroup(const TDesC& aControlName);

    98 

    99 protected: //Data

   100 

   101     TInt iVolume;

   102 };

   103 

   104 #endif // CAMMSVOLUMECONTROLGROUP_H

   105 

   106