/*

* Copyright (c) 2005 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: An EMN handler WAP Push Plugin.

*		

*

*/

#ifndef EMNHANDLER_H

#define EMNHANDLER_H

enum TEMNErrors

    {

    EEMNNoError = 0,

    EEMNMissingEMNElement,

    EEMNMissingMailboxAttribute,

    EEMNMissingTimestampAttribute,

    EEMNInvalidTimestampAttribute,

    EEMNInvalidYear,

    EEMNInvalidMonth,

    EEMNInvalidDay,

    EEMNInvalidHour,

    EEMNInvalidMinute,

    };

#include <e32base.h>

#include <push/cpushhandlerbase.h>

#include <AlwaysOnlineManagerClient.h>

#include "EMNXMLContentHandler.h"

/** 

* The CEMNHandler is a WAP Push Plugin. It registers for a email notification 

* push message. It is invoked to do its work in when HandleMessage() API is 

* called by the Push Watcher framework.

* 

* As a WAP Push Plugin, it must destroy itself when it is complete. The Watcher

* does not hold a pointer to it, it is invoked and responsible for destroying 

* itself.

*   

*/ 

class CEMNHandler : public CPushHandlerBase

	{

    public:	// Methods

        /**

        * Creates object from CEMNHandler

        * @since S60 v3.1

        * @return, Constructed object

        */

    	static CEMNHandler* NewL();

        /**

        * Destructor

        * @since S60 v3.1

        */

     	virtual ~CEMNHandler();

    public:	// Methods from CPushHandlerBase

        /**

        * Called by the Wap Push Framework to handle the message.

        * @since S60 v3.1

        * @param aPushMsg The push message delivered from the framework containing

    	*                 the Push Message.  Ownership is taken over.

        * @param aStatus  when this function is complete, this status is returned 

    	*                 with acompletion code.

        */

    	void HandleMessageL( CPushMessage* aPushMsg, TRequestStatus& aStatus );

        /**

        * Called by the Wap Push Framework to handle the message.

        * @since S60 v3.1

        * @param aPushMsg The push message delivered from the framework containing

    	*                 the Push Message.  Ownership is taken over.

        */

    	void HandleMessageL( CPushMessage* aPushMsg );

        /**

        * Called by the Wap Push Framework to cancel outstanding events.

        * @since S60 v3.1

        */

    	void CancelHandleMessage();

        /**

        * Reserved for ECOM for future expansion

        * @since S60 v3.1

        */

    	virtual void CPushHandlerBase_Reserved1();

        /**

        * Reserved for ECOM for future expansion

        * @since S60 v3.1

        */

    	virtual void CPushHandlerBase_Reserved2();

    private:	// Methods from CActive

        /**

        * Cancels the outstanding request.

        * @since S60 v3.1

        */

    	void DoCancel();

        /**

        * Called when object is active

        * @since S60 v3.1

        */

    	void RunL();

    private:	// Methods

        /**

        * Default constructor for class CEMNHandler

        * @since S60 v3.1

        * @return, Constructed object

        */

    	CEMNHandler();

        /**

        * Symbian 2-phase constructor

        * @since S60 v3.1

        */

    	void ConstructL();

        /**

        * Completes itself.

        * @since S60 v3.1

        */

    	void IdleComplete();

        /**

        * Handle the suicide.

        * @since S60 v3.1

        */

        void Done( TInt aError );

        /**

        * Handles the parsing of received EMN message.

        * @since S60 v3.1

        */

    	void ParsePushMsgL();

        /**

        * Relays parsed message to always online client.

        * @since S60 v3.1

        */

    	void ProcessPushMsgL();

    private:	// Attributes

    	typedef enum TState { EParsing, EProcessing, EDone };  

    	TState iState;

    	// Push Message passed in

    	CPushMessage*	iMessage;

        // The body of the pushed message as HBufC8 descriptor

        HBufC8* iBody;

    	// Flag to indicate if this was called asynchonously

    	TBool			iAsyncHandling;

        // EMN element containing mailbox and timestamp

        TEMNElement     iElement;

        // Used to relay parsed message to always online client.

        RAlwaysOnlineClientSession  iAOClient;

	};

#endif	// EMNHANDLER_H