/*

* Copyright (c) 2007 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:   CUniEditorProcessTextOperation class definition.      

*

*/

#ifndef CUNIEDITORPROCESSTEXTOPERATION_H

#define CUNIEDITORPROCESSTEXTOPERATION_H

// INCLUDES

#include <xhtmlparser.h>

#include "UniEditorOperation.h"

// FORWARD DECLARATIONS

// DATA TYPES

// CLASS DECLARATION

/**

* CUniEditorProcessTextOperation

*

* @since 3.2

*/

class CUniEditorProcessTextOperation : public CUniEditorOperation,

                                       public MXhtmlParserObserver

    {

    public: // new operations

        /**

        * Factory method

        */

        static CUniEditorProcessTextOperation* NewL( 

            MUniEditorOperationObserver& aObserver,

            CUniEditorDocument& aDocument,

            RFs& aFs );

        /**

        * Destructor

        */

        virtual ~CUniEditorProcessTextOperation();

        /**

        * Starts text process operation

        *

        * @param aImageInfo

        * @param aAttachmentId  Attachment id, if the image is already stored as an attachment

        *                       KMsvNullIndexEntryId, otherwise.

        * @param aMessageSize

        */

        void Start();

    protected:

        /**

        * From CActive

        */

        void RunL();

        /**

        * From CActive

        */

        TInt RunError( TInt aError );

        /**

        * From CUniEditorOperation

        */

        void DoCancelCleanup();

        /**

        * From MXhtmlParserObserver

        *

        * Call back function used to inform a client of the Parser

        * when a parsing operation completes.

        */

    	void ParseCompleteL();

    	/**

    	* From MXhtmlParserObserver

        *

        * Call back function used to inform a client of the Parser

        * about error.

        */

    	void ParseError( TInt aError );

    private: // new operations

        /**

        * C++ constructor

        */

        CUniEditorProcessTextOperation( MUniEditorOperationObserver& aObserver,

                                        CUniEditorDocument& aDocument,

                                        RFs& aFs );

        /**

        * 2nd phase constructor.

        */

        void ConstructL();

        /**

        * Checks whether some processing is needed for the text objects.

        */

        void DoStartCheck();

        /**

        * Start process step.

        */

        void DoStartProcessL();

        /**

        * Processing ready.

        */

        void DoReady();

        /**

        * Releases the limited resources used by the operation.

        */

        void Reset();

         /**

        * Creates empty text attachment.

        */

        void CreateEmptyTextAttachmentL( RFile& aFileHandle );

         /**

        * Replaces XHTML attachment with plain text attachment.

        */

        void ReplaceXhtmlAttachmentL( RFile& aFileHandle );

        /**

        * Writes text into file.

        */

        void WriteTextToFileL( CRichText& aText, RFile& aFileHandle );

        /**

        * Notify observer

        */ 

        void NotifyObserver( TUniEditorOperationEvent aEvent );

        /**

        * Performs parse error handling.

        */

        void HandleParserErrorL( TInt aError );

    private: // data

        enum TUniProcessStates

            {

            EUniProcessTxtCheck,

            EUniProcessTxtProcess,

            EUniProcessTxtNewFile,

            EUniProcessTxtReady,

            EUniProcessTxtError

            };

        CUniObject* iProcessedObject;

        CMsvStore* iEditStore;

        CXhtmlParser* iParser;

        TInt iSlideNum;

        TMsvAttachmentId iNewAttachmentId;

    };

#endif // CUNIEDITORPROCESSTEXTOPERATION_H