/*

* 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:  Stack for handling transactions

*

*/

#ifndef CASYPROXYCOMMSSTACK_H

#define CASYPROXYCOMMSSTACK_H

// INCLUDES

#include <e32std.h>

#include <e32base.h>

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CASYProxyTRRecord;

class CASYProxyCommandObserver;

// CLASS DECLARATION

/**

*  Class for handling concurrent transactions.

*  Uses array as a stack.

*

*  @lib ASYProxy.dll

*  @since S60 3.1

*/

class CASYProxyCommsStack: public CBase

    {

    public: // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CASYProxyCommsStack* NewL();

        /**

        * Destructor.

        */

        virtual ~CASYProxyCommsStack();

    public: // New functions

        /**

        * Creates and adds a new transaction record to stack.

        * @since S60 3.1

        * @param aASYProxyCommandObserver Pointer to a observer

        * @return void

        */

        void AddL( CASYProxyCommandObserver* aASYProxyCommandObserver );

        /**

        * Removes current transaction from stack.

        * @since S60 3.1

        * @param aTrId Transaction to be removed

        * @return void

        */

        void Remove( TInt aTrId );

        /**

        * Removes all transactions from stack.

        * @since S60 3.1

        * @param void

        * @return void

        */

        void RemoveAll();

    public: // Functions from base classes

    protected: // New functions

    protected: // Functions from base classes

    private:

        /**

        * C++ default constructor.

        */

        CASYProxyCommsStack();

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

    public:     // Data

    protected:  // Data

    private:    // Data

        // Array used as a stack of transactions

        RPointerArray<CASYProxyTRRecord> iTRRecordArray;

    public:     // Friend classes

    protected:  // Friend classes

    private:    // Friend classes

    };

#endif // CASYPROXYCOMMSSTACK_H

// End of File