/*

* Copyright (c) 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:  Definition of CPushMtmCacheSupply

*

*/

#ifndef CPUSHMTMCACHESUPPLY_H

#define CPUSHMTMCACHESUPPLY_H

//  INCLUDES

#include <e32base.h>

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CHttpTransaction;

class CPeriodic;

class CPushMtmCacheDataSupplier;

// CLASS DECLARATION

class MCacheSupplyCallbacks

    {

    public:

        virtual RHTTPTransaction* Transaction() = 0;

        virtual void HandleEventL(THTTPEvent aEvent) = 0;

    };

/**

*  This class handles http transactions.

*  @lib PushMtmContentHandler

*  @since 3.1

*/

class CPushMtmCacheSupply : public CBase

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @param

        * @param

        * @param

        * @return Http cache  object.

        */

        static CPushMtmCacheSupply* NewL( CHttpCacheManager* aCacheMgr, MCacheSupplyCallbacks* aCacheSupplyCallbacks );

        /**

        * Destructor.

        */

        virtual ~CPushMtmCacheSupply();

    public: // new functions

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        TInt StartRequestL(  );

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        void CloseRequest();

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        void HeadersReceivedL();

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        void BodyReceivedL();

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        void ResponseCompleteL();

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        TInt ResponseState() const { return iReponseState;}

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        TBool IsSupplying()             { return iResponseTimer!=0; }

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

		void PauseSupply();

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

		void ResumeSupply();

    private:

        /**

        * Construct.

        * @param

        * @param

        * @parem

        * @return

        */

        CPushMtmCacheSupply( MCacheSupplyCallbacks* aCacheSupplyCallbacks  );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL(CHttpCacheManager* aCacheMgr);

    private: //

        /**

        * Callback for async response

        * @since 3.1

        * @param  aAny this pinter

        * @return TInt KErrNone

        */

        static TInt ResponseCallbackL( TAny* aAny );

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        void SupplyResponseL();

        /**

        *

        * @since 3.1

        * @param

        * @return

        */

        void SendBodyL();

    private:    // Data

        //

        CHttpCacheManager*              iCacheManager;          // not owned

        //

        TInt                            iReponseState;

        //

        CPeriodic*                      iResponseTimer;         // owned

        //

        TBool                           iFailed;

        //

        TBool                           iNotModified;

        //

        THttpCacheEntry                 iCacheEntry;

        // ETrue if the cache object is closed

        TBool							iClosed;

        CPushMtmCacheDataSupplier*      iDataSupplier;

        MCacheSupplyCallbacks*          iCacheSupplyCallbacks;

  };

#endif      // CPUSHMTMCACHESUPPLY_H

// End of File