/*

* Copyright (c) 2002-2004 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:  Loads polymorphic dlls

*

*/

#ifndef CXNLIBRARYLOADER_H

#define CXNLIBRARYLOADER_H

//  INCLUDES

#include <e32base.h>

// CONSTANTS

//const ?type ?constant_var = ?constant;

// MACROS

//#define ?macro ?macro_def

// DATA TYPES

//enum ?declaration

//typedef ?declaration

//extern ?data_type;

// FUNCTION PROTOTYPES

//?type ?function_name(?arg_list);

// FORWARD DECLARATIONS

class CXnPathRepository;

class RFs;

class CXnArray;

class RXnClientRequest;

// CLASS DECLARATION

/**

*  Locates files from a set of defined paths

*  @lib ?library

*  @since Series 60 3.1

*/

class CXnLibraryLoader : public CBase

    {

    public:  // Constructors and destructor

        struct CLibraryItem;  

        /**

        * Two-phased constructor.

        * @param aRFs File server session

        */

        IMPORT_C static CXnLibraryLoader* NewL();

        /**

        * DEPRECATED

        * Two-phased constructor.

        * @param aPathRepository Path repository for handling multiple directories

        * @param aRFs File server session

        */

        IMPORT_C static CXnLibraryLoader* NewL(CXnPathRepository& aPathRepository, RFs& aRFs);

        /**

        * Destructor.

        */

        virtual ~CXnLibraryLoader();

    public: // New functions

        /**

        * Load libraries by wildcard

        * @since Series 60 3.1

        * @param aWildCard Wildcard to search

        */

        IMPORT_C void LoadL(const TDesC& aWildCard);

        /**

        * Load libraries given by Definition Engine

        * @since Series 60 3.1

        * @param aXnClient Client interface to Definition Engine

        * @param aAppUid Uid of the current application

        */

        IMPORT_C void LoadL(RXnClientRequest& aXnClient, const TUid& aAppUid);

        /**

        * Get pointers to library functions

        * @since Series 60 3.1

        */

        IMPORT_C void Functions(CXnArray& aFunctions) const;

    public: // Functions from base classes

        /**

        * From ?base_class ?member_description.

        * @since Series ?XX ?SeriesXX_version

        * @param ?arg1 ?description

        * @return ?description

        */

        //?type ?member_function( ?type ?arg1 );

    protected:  // New functions

        /**

        * ?member_description.

        * @since Series ?XX ?SeriesXX_version

        * @param ?arg1 ?description

        * @return ?description

        */

        //?type ?member_function( ?type ?arg1 );

    protected:  // Functions from base classes

        /**

        * From ?base_class ?member_description

        */

        //?type ?member_function();

    private:

        /**

        * C++ default constructor.

        */

        CXnLibraryLoader();

        /**

        * 2nd phase constructor.

        * @param aRFs File server session

        */

        void ConstructL();

        /**

        * DEPRECATED

        * 2nd phase constructor.

        * @param aPathRepository Path repository for handling multiple directories

        * @param aRFs File server session

        */

        void ConstructL(CXnPathRepository& aPathRepository, RFs& aRFs);

        /**

        * Add a library

        * @param aItem Library to add

        * @since Series 60 3.1

        */

        TInt AddItem(CLibraryItem* aItem);

        // Prohibit copy constructor if not deriving from CBase.

        // ?classname( const ?classname& );

        // Prohibit assigment operator if not deriving from CBase.

        // ?classname& operator=( const ?classname& );

    public:     // Data

        // ?one_line_short_description_of_data

        //?data_declaration;

    protected:  // Data

        // ?one_line_short_description_of_data

        //?data_declaration;

    private:    // Data

        // Path repository, not owned by the loader

        CXnPathRepository* iPathRepository;

        // array of libraries

        RPointerArray<CLibraryItem> iLibraries;

        // file server session

        RFs* iRFs;

    };

#endif      // CXnLIBRARYLOADER_H

// End of File