/*

* Copyright (c) 2005-2006 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 "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:   CLandmarkService class

 *

*/

#ifndef __CLANDMARKSERVICE_H__

#define __CLANDMARKSERVICE_H__

#ifdef _DEBUG

#include <flogger.h>

#endif

// INCLUDES

#include <e32base.h>

#include <e32cmn.h>

#include <badesca.h>

//FORWARD DECLARARTIONS

class CLandmarkManageHandlers;

class MLandmarkObserver;

class CLandmarkFilter;

class CPosLandmarkParser;

class CPosLandmarkEncoder;

class CPosLmItemIterator;

class CPosLmDatabaseManager;

class CPosLandmark;

class CPosLandmarkCategory;

class TPosLmDatabaseSettings;

class CLandmarkManageObjects;

/**

 * CLandmarkService

 * This class has the core implementation. The member functions of this class

 * call the native landmarks api's to perform the necessary operations. This class 

 * also owns the garbage collector which takes care of active objects associated 

 * with async requests. It also owns the CLandmarkManageHandlers object that manages

 * the handles to open databases. The interface class calls the appropriate member

 * functions of this class to perform the required operation.

 */

// CLASS DECLARATION

NONSHARABLE_CLASS(CLandmarkService): public CBase

	{

public:

	/**

	 * TPosItem

	 * Specifies whether the id passed is a landmark id or a category id.

	 */

	enum TPosItem

		{

		ECategory = 0 /**<

		 Item is a landmark category id. */,

		ELandmark /**<

		 Item is a landmark id. */,

		};

	/**

	 * TDatabaseType

	 *  Specifies whether the database is local or remote.

	 */

	enum TDatabaseType

		{

		ELocalDatabase = 0 /**<

		 database is a local. */,

		ERemoteDatabase /**<

		 database is remote.  */,

		};

public: // New methods

	/**

	 * NewL.

	 * Two-phased constructor.

	 * Create a CLandmarkService object.

	 * @return A pointer to the created instance of CLandmarkService.

	 */

	IMPORT_C static CLandmarkService* NewL();

	/**

	 * NewLC.

	 * Two-phased constructor.

	 * Create a CLandmarkService object.

	 * @return A pointer to the created instance of CLandmarkService.

	 */

	IMPORT_C static CLandmarkService* NewLC();

	/**

	 * ~CLandmarkService

	 * Destructor.

	 */

	~CLandmarkService();

public: // Functions to retrieve data members

	/**

	 * ImportL.

	 * Imports landmarks to the requested database.

	 * @param aIterator A pointer reference to the list of imported landmarks. User

	 * owns the iterator.

	 * @param aLandmarkParser The instance of CPosLandmarkParser that 

	 * will parse the input landmark file.

	 * @param aDatabaseUri The URI of the database to which the parsed landmarks 

	 * will be imported.

	 */

	IMPORT_C void ImportL( CPosLmItemIterator*& aIterator,

			CPosLandmarkParser& aLandmarkParser,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * ExportL.

	 * Export a set of landmarks from the requested database to a file.

	 * @param aLandmarkEncoder A pointer to a landmark encoder object.

	 * @param aLandmarkIdArray The array of landmark ids which should be exported.

	 * @param aDatabaseUri The URI of the database from which the landmarks will 

	 * be exported.

	 */

	IMPORT_C void ExportL( CPosLandmarkEncoder& aLandmarkEncoder,

			const RArray<TPosLmItemId>& aLandmarkIdArray,

			const TDesC& aDatabaseUri = KNullDesC ) const;

	/**

	 * GetListL.

	 * Gets a list of landmarks/landmark categories from the requested database synchronously.

	 * @param aIterator A pointer reference to the list of retrieved landmarks/landmark 

	 * categories. User owns the iterator.

	 * @param aFilter The filter to be used for searching landmarks/landmark categories

	 * in database.

	 * @param aDatabaseUri The URI of the database from which landmarks/lanmdark categories 

	 * should be fetched.

	 */

	IMPORT_C void GetListL ( CPosLmItemIterator*& aIterator,

			CLandmarkFilter& aFilter, const TDesC& aDatabaseUri = KNullDesC ) const;

	/**

	 * GetListL.

	 * Gets a list of landmark databases.

	 * @param aDatabaseList A pointer reference to the list of retrieved databases. 

	 * User owns allocated list.

	 * @param aProtocol Protocol which matches that of the databases to be retrieved.

	 */

	IMPORT_C void GetListL( CDesCArray*& aDatabaseList,

			const TDesC& aProtocol = KNullDesC ) const;

	/**

	 * GetListL.

	 * Gets a list of landmarks/landmark categories from the requested database asynchronously.

	 * @param aTransactionId The transaction id assigned to this asynchronous request.

	 * @param aFilter The filter to be used for searching landmarks/landmark categories 

	 * in database.

	 * @param aDatabaseUri The URI of the database from which landmarks/lanmdark categories 

	 * should be fetched.

	 */

	IMPORT_C void GetListL( TInt32 aTransactionId,

			CLandmarkFilter& aFilter, const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * AddItemL.

	 * Adds a new Landmark to the given database.

	 * @param aLandmark CPosLandmark instance to be added to database.

	 * @param aDatabaseUri The URI of the database to which the CPosLandmark

	 * instance should be added.

	 */

	IMPORT_C TPosLmItemId AddItemL( CPosLandmark& aLandmark,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * AddItemL.

	 * Adds a new Landmark category to the given database.

	 * @param aCategory CPosLandmarkCategory instance to be added to database.

	 * @param aDatabaseUri The URI of the database to which CPosLandmarkCategory

	 * instance should be added.

	 */

	IMPORT_C TPosLmItemId AddItemL( CPosLandmarkCategory& aCategory,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * AddItemL.

	 * Adds a new database to terminal.

	 * @param aDatabaseUri The URI of the database to be added to terminal.

	 */

	IMPORT_C void AddItemL( const TDesC& aDatabaseUri );

	/**

	 * UpdateItemL.

	 * Updates an existing Landmark in the given database.

	 * @param aLandmark CPosLandmark instance to be updated in database.

	 * @param aDatabaseUri The URI of the database in which CPosLandmark 

	 * instance should be updated.

	 */

	IMPORT_C void UpdateItemL( const CPosLandmark& aLandmark,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * UpdateItemL.

	 * Updates an existing Landmark category in the given database.

	 * @param aCategory CPosLandmarkCategory instance to be updated in database.

	 * @param aDatabaseUri The URI of the database to which CPosLandmarkCategory 

	 * instance should be updated.

	 */

	IMPORT_C void UpdateItemL( const CPosLandmarkCategory& aCategory,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * UpdateItemL.

	 * Updates existing Database Information.

	 * @param aSettings TPosLmDatabaseSettings information to be updated.

	 * @param aDatabaseUri The URI of the database to be updated.

	 */

	IMPORT_C void UpdateItemL( TPosLmDatabaseSettings aSettings,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * LandmarkLC.

	 * Retrieves a Landmark from the database.

	 * @param aLandmarkId Id of the landmark to be retrieved.

	 * @param aDatabaseUri The URI of the database from which the CPosLandmark

	 * instance should be retrieved.

	 * @return A pointer to CPosLandmark instance.

	 */

	IMPORT_C CPosLandmark* LandmarkLC( const TPosLmItemId& aLandmarkId,

			const TDesC& aDatabaseUri = KNullDesC ) const;

	/**

	 * CategoryLC.

	 * Retrieves a Landmark category from the database.

	 * @param aCategoryId Id of the landmark category to be retrieved.

	 * @param aDatabaseUri The URI of the database from which the CPosLandmarkCategory

	 * instance should be retrieved.

	 * @return A pointer to CPosLandmarkCategory instance.

	 */

	IMPORT_C CPosLandmarkCategory* CategoryLC( const TPosLmItemId& aCategoryId,

			const TDesC& aDatabaseUri = KNullDesC ) const;

	/**

	 * RemoveItemL.

	 * Removes a Landmark/Landmark category from given database.

	 * @param aItemId The id of the Landmark/Landmark category to be removed.

	 * @param aItemIsLandmark Whether id passed is a landmark id or a category id.

	 * @param aDatabaseUri The URI of the database from which the 

	 * Landmark/Landmark category is to be removed.

	 */

	IMPORT_C void RemoveItemL( TPosLmItemId aItemId, TPosItem aItemIsLandmark,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * RemoveItemL.

	 * Removes the given database.

	 * @param aDatabaseUri The URI of the database to be removed from terminal.

	 */

	IMPORT_C void RemoveItemL( const TDesC& aDatabaseUri );

	/**

	 * SetActiveL.

	 * Sets specified database as an active database.

	 * @param aDatabaseUri The URI of the database to be set as an active database.

	 */

	IMPORT_C void SetActiveL( const TDesC& aDatabaseUri );

	/**

	 * LinkCategoryToLandmarksL.

	 * Associates a category with a set of landmarks.

	 * @param aCategoryId The id of category.

	 * @param aLandmarkIdArray The array of landmark ids to which the 

	 * category is to be associated.

	 * @param aDatabaseUri The URI of the database in which the landmarks and category exist.

	 */

	IMPORT_C void LinkCategoryToLandmarksL( TPosLmItemId aCategoryId,

			RArray< TPosLmItemId >& aLandmarkIdArray,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * UnlinkCategoryToLandmarksL.

	 * Dissociates a category with a set of landmarks.

	 * @param aCategoryId The id of category.

	 * @param aLandmarkIdArray The array of landmark ids to which the 

	 * category is to be dissociated.

	 * @param aDatabaseUri The URI of the database in which the landmarks and category exist.

	 */

	IMPORT_C void UnlinkCategoryToLandmarksL( TPosLmItemId aCategoryId,

			RArray< TPosLmItemId >& aLandmarkIdArray,

			const TDesC& aDatabaseUri = KNullDesC );

	/**

	 * RegisterObserver.

	 * Registers an observer for Asynchronous call backs.

	 * @param aObserver A pointer to a concrete MLandmarkObserver instance.

	 */

	IMPORT_C void RegisterObserver( MLandmarkObserver* aObserver );

	/**

	 * Cancel.

	 * Cancels an ongoing asynchronous request.

	 * @param aTransactionId The transaction id of the asynchronous request.

	 */

	IMPORT_C void Cancel( TInt32 aTransactionId ) const;

	/**

	 * GetDefaultDbUri.

	 * Gets the URI of the default database.

	 * @param aDefaultDbUri A reference to the URI of the default database.				

	 */

	IMPORT_C void GetDefaultDbUriL( TPtrC& aDefaultDbUri ) const;

private:// helper functions

	/**

	 * GetDbTypeFromUri.

	 * Gets the type of database.

	 * @param aDatabaseUri The URI of the database whose information is queried.

	 * @return Error.

	 */

	TDatabaseType GetDbTypeFromUri ( const TDesC& aDbUri ) const;

private: // Constructors

	/**

	 * ConstructL

	 * 2nd phase constructor.

	 * Perform the second phase construction of a

	 * CLandmarkService object.

	 */

	void ConstructL();

	/**

	 * CLandmarkService.

	 * C++ default constructor.

	 */

	CLandmarkService();

private: // Data members

	/**

	 * iManageHandler

	 * CPosLmManageHandler instance.

	 */

	CLandmarkManageHandlers* iManageHandler;

	/**

	 * iDatabaseManager

	 * CPosLmDatabaseManager instance.

	 */

	CPosLmDatabaseManager* iDatabaseManager;

	/**

	 * iObserver

	 * MLandmarkObserver instance.

	 */

	MLandmarkObserver* iObserver;

	/**

	 * iManageObjects

	 * CLandmarkManageObjects instance.

	 */

	CLandmarkManageObjects* iManageObjects;

#ifdef _DEBUG

	RFileLogger iLog;

#endif		

	};

#endif // __CLANDMARKSERVICE_H__

// End of File