/*

* 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:  Loader of ASYs

*

*/

#ifndef CASYPROXYASYLOADER_H

#define CASYPROXYASYLOADER_H

// INCLUDES

#include "ASYProxyLoaderTimer.h"

#include <ecom/ecom.h>

#include <AsyServiceUids.h>

#include <e32svr.h>

#include <e32base.h>

// CONSTANTS

// MACROS

// DATA TYPES

// Zero Uid is used for non existing handler

#define ZEROHANDLERUID 0x0

enum TASYLoadingStep

    {

    EASYLoadingStepListInit,

    EASYLoadingStepListImplementations,

    EASYLoadingStepOrderImplementations,

    EASYLoadingStepLoadASY,

    EASYLoadingOver

    };

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// CLASS DECLARATION

class CASYProxyAsyHandler;

class CASYProxy;

/**

*  Loader class for ASYs

*  Loading steps has been splitted by using AO

*

*  @lib ASYProxy.dll

*  @since S60 3.1

*/

class CASYProxyAsyLoader : public CActive

    {

    public: // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CASYProxyAsyLoader* NewL( CASYProxy* aAsyProxy );

        /**

        * Destructor.

        */

        virtual ~CASYProxyAsyLoader();

    public: // New functions

        /**

        * Issues asynchronous ASY loading steps.

        * @since S60 3.1

        * @param void

        * @return void

        */

        void IssueRequest();

    public: // Functions from base classes

    protected: // New functions

    protected: // Functions from base classes

        /**

        * From CActive Implements cancellation of an outstanding request.

        */

        void DoCancel();

        /**

        * From CActive Handles an active object's request completion event.

        */

        void RunL();

        /**

        * From CActive Handles RunL's leave cases

        */

        TInt RunError( TInt aError );

    private:

        /**

        * C++ default constructor.

        */

        CASYProxyAsyLoader( CASYProxy* aAsyProxy );

       /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        void Cleanup();

        void ListImplementationsL();

        void DoIssueRequestL();

        void ArrangeImplementationsL();

        void NextStep();

    public:     // Data

    protected:  // Data

    private:    // Data

        // Implementation info array of CASYMainServiceBase instances.

        RImplInfoPtrArray iServiceImplInfoArray;

        // Implementation info array of CASYCommandHandlerBase instances.

        RImplInfoPtrArray iHandlerImplInfoArray;

        // Implementation uid array of CASYCommandHandlerBase instances.

        RArray<TUid> iImplUidsHandlerArray;

        // Status of iServiceImplInfoArray item count.

        TBool iListRet;

        // Index value of ASY while creating ASY.

        TInt iArrayItemCounter;

        // Handles loading steps while proceeding loading of all ASYs.

        TASYLoadingStep iStepToDo;

        // Pointer to timer handling time out during load ASYs.

        CASYProxyLoaderTimer* iTimer; // Owned

        // Pointer to ASYProxy.

        CASYProxy* iAsyProxy; // Not owned

    public:     // Friend classes

    protected:  // Friend classes

    private:    // Friend classes

    };

#endif // CASYPROXYASYLOADER_H

// End of File