/*

 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

 * which accompanies this distribution, and is available

 * at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:  Geographical base class definition.

 *

 */

 #ifndef LBTGEOAREABASE_H

 #define LBTGEOAREABASE_H

 #include <e32base.h>

 #include <s32strm.h>

 /**

  * Base class for geographical area.

  *

  * @lib lbt.lib

  *

  * @since S60 5.1

  */

 class CLbtGeoAreaBase : public CBase

     {

 public:

     /** 

      * Type of geographical area

      */

     enum TGeoAreaType

         {

         ECircle = 1,    ///<Circular area

         ERectangular = 2,     ///<Rectangular area

         ECellular = 3

         };

     /**

      * Destructor

      */

     IMPORT_C virtual ~CLbtGeoAreaBase();

     /**

      * Gets the type of the geographical area

      * 

      * @return The type of geographical area.

      */

     virtual TGeoAreaType Type() const = 0;

     /**

      * Internalizes the trigger condition object's details and attributes 

      * from stream.

      *

      * The presence of this function means that the standard templated 

      * operator>>() ( defined in s32strm.h ) is available to internalize objects 

      * of this class.

      *

      * @param[in] aStream Stream from which the object should be internalized.

      */

     IMPORT_C void InternalizeL( RReadStream& aStream );

     /**

      * Externalizes the trigger condition object's details and attributes

      * to stream.

      *

      * The presence of this function means that the standard templated 

      * operator<<() ( defined in s32strm.h ) is available to externalize objects 

      * of this class.

      *

      * @param[in] aStream Stream to which the object should be externalized.

      */

     IMPORT_C void ExternalizeL( RWriteStream& aStream ) const;

 protected:

     /**

      * Default constructor

      */  

     CLbtGeoAreaBase();

     /**

      * Internalize method that subclass must implement.

      * @param[in] aStream Stream from which the object should be internalized.

      */

     virtual void DoInternalizeL( RReadStream& aStream ) = 0;

     /**

      * Externalize method that subclass must implement.

      * @param[in] aStream Stream to which the object should be externalized.

      */

     virtual void DoExternalizeL( RWriteStream& aStream ) const = 0;

 private:

     /**

      * By default, prohibit copy constructor

      */

     CLbtGeoAreaBase( const CLbtGeoAreaBase& );

     /**

      * Prohibit assigment operator

      */

     CLbtGeoAreaBase& operator= ( const CLbtGeoAreaBase& );

     };

 #endif //LBTGEOAREABASE_H