/*

* 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 -    Category list provider

*

*/

#ifndef CLMKCATEGORYLISTPROVIDER_H

#define CLMKCATEGORYLISTPROVIDER_H

//  INCLUDES

#include "CLmkLmItemListProvider.h"

#include "LmkListProviderFactory.h"

// FORWARD DECLARATIONS

class CPosLmCategoryManager;

class CPosLandmarkCategory;

/********************************/

class CPosLandmarkSearch;

class CPosLmOperation;

class CPosLmCategoryCriteria;

/********************************/

// CLASS DECLARATION

/**

* CLmkCategoryListProvider class

*/

class CLmkCategoryListProvider : public CLmkLmItemListProvider

    {

    public:  // Constructors and destructor

        /**

        * Creates a provider for all items in the database.

        * @param aDb landmark database reference

        * @param aShowType determines whether non-referenced

        *        categories are considered or not

        * @return newly instantiated object

        */

        static CLmkCategoryListProvider* NewL( CPosLandmarkDatabase& aDb,

                                               TLmkProviderType aShowType );

        /**

        * Destructor.

        */

        ~CLmkCategoryListProvider();

    public: // From CLmkListProviderBase

        CLmkUiItemBase* ItemAtL( TInt aIndex );

    public: // From MLmkDbObserver

        void HandleDatabaseEvent( TPosLmEvent& aEvent );

    protected: // From CLmkLmItemListProvider

        void PrepareListL();

        TBool PrepareListL(const TDesC& aSearchPattern,

    							TBool aSearchOnlyInPreviousMatches);

        void RemoveLandmarksL(const RArray<TPosLmItemId>& aSelectedItems ) ;

    private:  // Constructors and destructor

        /**

        * C++ constructor.

        * @param aDb

        * @param aShowType

        * @return newly instantiated object

        */

        CLmkCategoryListProvider( CPosLandmarkDatabase& aDb,

                                  TLmkProviderType aShowType );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

    private: //new functions

        /**

        * Make category usage list

        */

        void PrepareCategoryUsageListL();

        /**

         * Check is category used or not

         * @param aCategory, list item category

         * @return TBool

         */

        TBool IsUsedL( CPosLandmarkCategory& aCategory );

/******************************************************/

     protected: // From MLmkAOOperationObserver

        void HandleOperationL( TOperationTypes aType,

                              TReal32 aProgress,

                              TInt aStatus );

	/**

        * Read items to array

        */

        void ReadItemsToArrayL();

/******************************************************/

    private:    // Data

        ///Own:

        CPosLmCategoryManager* iCategoryMgr;

        TLmkProviderType iShowType;

        // category usage id list

        RArray<TPosLmItemId> iUsageArray;

        // index

        TInt iUsageIndex;

		// are any uncategorised items in database

		TBool iAreUncategorisedItems;

/************************************************/

  ///Own:

        CPosLandmarkSearch* iSearch;

        ///Own:

        CLmkAOOperation* iSearchAO;

        CPosLmCategoryCriteria* iCriteria;

/************************************************/

    };

#endif      // CLMKCATEGORYLISTPROVIDER_H

// End of File