S60 3rd Edition SDK for Symbian OS Example Applications Guide

LandmarksOperationObserver.h

/*
* ==============================================================================
*  Name        : LandmarksOperationObserver.h
*  Part of     : Landmark Reference Application
*  Interface   : -
*  Description : See class description below
*  Version     : 1.0
*
*  Copyright (c) 2004-2006 Nokia Corporation.
*  This material, including documentation and any related 
*  computer programs, is protected by copyright controlled by 
*  Nokia Corporation.
* ==============================================================================
*/

#ifndef __LANDMARKS_OPERATION_OBSERVER_H__
#define __LANDMARKS_OPERATION_OBSERVER_H__

// INCLUDES
#include <e32base.h>

// CONSTANTS
const TInt KOperationReady = 100;
const TInt KOperationNotReady = 0;

// DATA TYPES
/**
* TOperation indicates which operation type has been processed
*/
enum TOperation
    {
    ENoOperation,
    EInitializeDb,
    ELandmarkSearch,
    ECategorySearch,
    ELandmarkRead,
    ECategoryRead,
    EAcquiringLocation
    };

// CLASS DECLARATION

/**
*  An observer interface used for notifying the execution progress of 
*  asynchronous opearations. 
*  Typically used by objects deriving from other classes than CActive.
*/
class MLandmarksOperationObserver
    {
    public: // New functions

        /**
        * NotifyOperationProgressL notifies the progress and status of an
        * asynchronous operation.
        *  
        * @param aOperation the type of operation that is reported.
        * @param aProgress the progress of the operation.
        * @param aErrorCode the status of the operation.
        */
        virtual void NotifyOperationProgressL(
            TOperation aOperation, 
            TInt aProgress, 
            TInt aErrorCode) = 0;

    };

#endif // __LANDMARKS_OPERATION_OBSERVER_H__

// End of File

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© Nokia 2006