/*

* Copyright (c) 2004 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:    LandmarksUi Content File -    This class wraps functionality related to landmark encoding into

*                a simpler interface.

*

*/

#ifndef CLMKENCODER_H

#define CLMKENCODER_H

//  INCLUDES

#include <EPos_Landmarks.h>

#include "MLmkAOOperationObserver.h"

#include "CLmkLandmark.h"

// FORWARD DECLARATIONS

class CPosLandmarkEncoder;

class CPosLandmarkDatabase;

class CLmkAOOperation;

class CPosLandmark;

// CLASS DECLARATION

/**

 * This class wraps functionality related to landmark encoding into

 * a simpler interface.

 */

class CLmkEncoder : public CBase, public MLmkAOOperationObserver

    {

	public:  // Constructors and destructor

		/**

		* Create CLmkEncoder object

        * @param aDb landmark database

        * @param aObserver calling class setting itself as observer to this class

        * @param aProgressNote Note to show the progress of encoding operation

		* @return newly instantiated object

		*/

		IMPORT_C static CLmkEncoder* NewL( CPosLandmarkDatabase& aDb,

                                           MLmkAOOperationObserver& aObserver,

                                           TBool aProgressNote );

		/**

		* Destructor.

		*/

		~CLmkEncoder();

    protected: //from MLmkAOOperationObserver

        void HandleOperationL( TOperationTypes aType,

                               TReal32 aProgress,

                               TInt aStatus );

    public: // New functions

        /**

        * Set package name

        * @param aName

        */

        //IMPORT_C void SetPackageNameL( const TDesC& aName );

        /**

        * Start encoding package. Possibly existing file is deleted first.

        * @param aFile where parsed data is stored

        * @param aLandmarkIdArray

        */

        IMPORT_C void StartEncodingL( const TDesC& aFile,

                        const RArray<TPosLmItemId>& aLandmarkIdArray );

        /**

        * Start encoding package. Possibly existing file is deleted first.

        * This API can also be used for encoding unsaved landmarks

        * @param aFile where parsed data is stored

        * @param aLandmarks

        */

        IMPORT_C void StartEncodingL(const TDesC& aFileName,

                    	const RPointerArray<CLmkLandmark>& aLandmarks );

        /**

        * Cancel encode operation

        */

        IMPORT_C void CancelEncodeOperationL();

    private:  // New functions

    	/**

        * This function is used for setting the name for landmarks package

        * @param aName Name to be set for landmarks package

        */

    	void SetPackageNameL( const TDesC& aName );

        /**

        * Finalize the encode process. It uses the Landmarks Framework method

        * to signal the finalizing the encode process.

        */

        void FinalizeEncodingL();

        /**

        * Checks if any Active Object is already running. This is used whenever

        * a new Active Object operation is started.

        */

        void LeaveIfInUseL();

        /**

        * Instantiates iEncoder & prepares file to which encoded data is written.

        */

        void PrepareEncoderL(const TDesC& aFileName);

    private:  // Constructors and destructor

        /**

        * C++ default constructor.

        * @param aDb landmark database

        * @param aObserver calling class sets itself as the observer to this class

        * @param aProgressNote Note to show the progress of landmark encoding process

        * @return newly instantiated object

        */

        CLmkEncoder( CPosLandmarkDatabase& aDb,

                    MLmkAOOperationObserver& aObserver,

                    TBool aProgressNote );

        /**

		* By default Symbian 2nd phase constructor is private.

        * @param aFile

		*/

        void ConstructL();

    private:    // Data

        ///Ref:

        CPosLandmarkDatabase& iDb;

        ///Ref:

        MLmkAOOperationObserver& iObserver;

        TBool iProgressNote;

        TBool iExporting; // detailed encoder status

        ///Own: EPos encoder

        CPosLandmarkEncoder* iEncoder;

        ///Own:

        CLmkAOOperation* iAOOperation;

    };

#endif      // CLMKENCODER_H

// End of File