/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  The channel basic information

*

*/

#ifndef SENSRVCHANNELINFO_H

#define SENSRVCHANNELINFO_H

#include <e32base.h>

#include <sensrvtypes.h>

/**

 *  The TSensrvChannelInfo class is a data class that holds information about a sensor channel.

 *

 *  It also provides simple helper methods that allow users to determine if the class is complete

 *  and if one instance of this class matches another.

 *

 *  @lib sensrvutil.lib

 *  @since S60 5.0

 */

NONSHARABLE_CLASS( TSensrvChannelInfo )

    {

public:

    /**

    * Default Constructor

    *

    * @since S60 5.0

    */      

    IMPORT_C TSensrvChannelInfo();

    /**

    * Constructor

    * 

    * This constructor is for use with CSensrvChannelFinder::FindChannelsL(). It sets the ChannelId

    * and DataItemSize to zero.

    *

    * @since S60 5.0

    * @param  aContextType Channel context type. Set to a value from TSensrvContextType.

    * @param  aQuantity Channel quantity. Set to a value from TSensrvQuantity.

    * @param  aChannelType Channel type id. This is a uid.

    * @param  aLocation Channel physical location.

    * @param  aVendorId Channel vendor name.

    * @param  aChannelDataTypeId Channel data type Id. This is a uid.

    * @see TSensrvContextType

    * @see TSensrvQuantity

    */          

    IMPORT_C TSensrvChannelInfo( TInt aContextType, 

                                 TInt aQuantity, 

                                 TSensrvChannelTypeId aChannelType,

                                 const TDesC8& aLocation,

                                 const TDesC8& aVendorId,

                                 TSensrvChannelDataTypeId aChannelDataTypeId ); 

    /**

    * Constructor

    *

    * @since S60 5.0

    * @param aChannelId Channel identifier

    * @param  aContextType Channel context type. Set to a value from TSensrvContextType.

    * @param  aQuantity Channel quantity. Set to a value from TSensrvQuantity.

    * @param  aChannelType Channel type id. This is a uid.

    * @param  aLocation Channel physical location.

    * @param  aVendorId Channel vendor name.

    * @param  aDataItemSize Data item size for channel specific data

    * @param  aChannelDataTypeId Channel data type Id. This is a uid.

    * @see    TSensrvContextType

    * @see    TSensrvQuantity 

    */          

    IMPORT_C TSensrvChannelInfo( TSensrvChannelId aChannelId, 

                                 TInt aContextType, 

                                 TInt aQuantity, 

                                 TSensrvChannelTypeId aChannelType,

                                 const TDesC8& aLocation,

                                 const TDesC8& aVendorId, 

                                 TInt aDataItemSize,

                                 TSensrvChannelDataTypeId aChannelDataTypeId ); 

    /**

    * Copy constructor

    * 

    * @since S60 5.0

    * @param  aChannelInfo Instance to be copied

    */    

    IMPORT_C TSensrvChannelInfo( const TSensrvChannelInfo& aChannelInfo );

public:     

    /**

    * Checks if this instance matches supplied instance. Fields that are zero or empty are ignored.

    * Channel Id, Data Item Size and Reserved fields are ignored.

    * 

    * @since S60 5.0

    * @param  aInfo Instance to be matched against this instance.

    * @return ETrue if there is a match, otherwise EFalse

    */  

    IMPORT_C TBool IsMatch( const TSensrvChannelInfo &aInfo ) const;

    /**

    * Checks that channel information in this object is complete. Complete means no zero or empty fields.

    * Channel Id, Data Item Size and the Reserved fields are ignored.

    * 

    * @since S60 5.0

    * @return ETrue if channel information is complete.

    */

    IMPORT_C TBool IsComplete() const;

public:

    /**

    * Channel Identifier

    */

    TSensrvChannelId iChannelId;

    /**

    * Context type

    * @see TSensrvContextType

    */

    TInt iContextType;

    /**

    * Quantity

    * @see TSensrvQuantity

    */

    TInt iQuantity;    

    /**

    * Channel type identifier

    * 

    * Identifies the channel type and therefore the content of the channel. This value is a uid and is

    * unique among all channels. See sensor channel specific header files.

    */

    TSensrvChannelTypeId iChannelType;

    /**

    * Location of the of the channel. This is a free format string

    */

    TBuf8<KSensrvLocationLength> iLocation;

    /**

    * Vendor name of the channel provider. This is a free format string and is not to be confused with

    * Vendor Id unique Uid's.

    */

    TBuf8<KSensrvVendorIdLength> iVendorId;

    /**

    * Size of the data item delivered by the channel

    */

    TInt iDataItemSize;

private:

    TInt iReserved3;

public:

    /**

    * Identifies the channel data type. This value is a uid and is unique among all channels. See sensor

    * channel specific header files.

    */      

    TSensrvChannelDataTypeId iChannelDataTypeId;

private:

    TInt iReserved;

    TInt iReserved2;

    };

#endif // SENSRVCHANNELINFO_H