1 /*

     2 * Copyright (c) 2010 Ixonos Plc.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the "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 * Ixonos Plc

    14 *

    15 * Description:  

    16 *

    17 */

    18 

    19 

    20 

    21 #ifndef SINGLEPARAMCONTROLOBSERVER_H

    22 #define SINGLEPARAMCONTROLOBSERVER_H

    23 

    24 //  INCLUDES

    25 

    26 //  FORWARD DECLARATIONS

    27 

    28 

    29 /*	CLASS: MSingleParControlObserver

    30 *

    31 *   MSingleParControlObserver is a mixin class for updating the parameter

    32 *

    33 */

    34 class MSingleParControlObserver

    35 {

    36 public:

    37 /** @name Methods:*/

    38 //@{

    39     enum TParamOperation

    40     {

    41         //  Invalid

    42         EParamOperationMin,

    43         //  Set default parameter

    44         EParamOperationDefault,

    45         //  Add step to parameter

    46         EParamOperationAdd,

    47         //  Subtract step from parameter

    48         EParamOperationSubtract,

    49         //  Invalid

    50         EParamOperationMax,

    51     };

    52 //@}

    53 

    54 /** @name Methods:*/

    55 //@{

    56 	/** ParamOperation 

    57     *

    58     *   Performs an operation to the filter parameter.

    59 	*

    60 	*	@param aOperation - filter parameter operation

    61 	*	@return -

    62 	*/

    63 	virtual void ParamOperation (const TParamOperation aOperation) = 0;

    64 

    65 	/** GetParam

    66     *

    67     *   Gets filter parameter.

    68 	*

    69 	*	@param -

    70 	*	@return TReal - filter parameter value

    71 	*/

    72 	virtual TReal GetParam () const = 0;

    73 //@}

    74 

    75 protected:

    76 

    77 /** @name Methods:*/

    78 //@{

    79 

    80 //@}

    81 

    82 /** @name Members:*/

    83 //@{

    84 

    85 //@}

    86 

    87 private:

    88 

    89 /** @name Methods:*/

    90 //@{

    91 

    92 

    93 //@}

    94 

    95 /** @name Members:*/

    96 //@{

    97 

    98 //@}

    99 

   100 };

   101 

   102 #endif

   103 

   104 // End of File