/*

* 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 "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:   CNcdParserImpl declaration

*

*/

#ifndef NcdPARSERIMPL_H

#define NcdPARSERIMPL_H

#include <xml/parser.h>

#include <badesca.h>

#include "ncdparser.h"

#include "ncdparserobserver.h"

#include "ncdsubparser.h"

class CNcdParserObserverBundleImpl;

class MNcdProtocolDefaultObserver;

/**

 * Parser implementation class.

 */

class CNcdParserImpl : //public CBase,

    public CActive,

    public MNcdParser,

    public MNcdSubParserObserver

    {

public:

    /**

     * Constructor

     *

     * @param Default observer. Ownership is transferred to parser

     * @return CNcdParserImpl*

     */

    static CNcdParserImpl* NewL( 

        MNcdProtocolDefaultObserver* aDefaultObserver );

    /**

     * Destructor

     */

    virtual ~CNcdParserImpl();

protected:

    /**

     * Constructor

     */

    CNcdParserImpl( MNcdProtocolDefaultObserver* aDefaultObserver );

    /**

     * Constructor

     */

    void ConstructL();

private: // From CActive

    /**

     * @see CActive::DoCancel()

     */

    void DoCancel();

    /**

     * @see CActive::RunL()

     */

    void RunL();

    /**

     * @see CActive::RunError()

     */

    TInt RunError( TInt aError );

public: // From MNcdParser

    /**

     * @see MNcdParser::Observers()

     */

    MNcdParserObserverBundle& Observers() const;

    /**

     * @see MNcdParser::DefaultObserver()

     */

    MNcdProtocolDefaultObserver& DefaultObserver() const;

    /**

     * @see MNcdParser::BeginAsyncL()

     */     

    void BeginAsyncL();

    /**

     * @see MNcdParser::BeginAsyncL()

     */     

    void BeginAsyncL( CNcdSubParser* aSubParser );

    /**

     * @see MNcdParser::BeginSyncL()

     */

    void BeginSyncL();

    /**

     * @see MNcdParser::BeginSyncL()

     */

    void BeginSyncL( CNcdSubParser* aSubParser );

    /**

     * @see MNcdParser::ParseL()

     */

    void ParseL( const TDesC8& aData );

    /**

     * @see MNcdParser::ParseL()

     */

    void ParseL( const TDesC16& aData );

    /**

     * @see MNcdParser::EndL()

     */

    void EndL();

    /**

     * @see MNcdParser::CancelParsing()

     */

    void CancelParsing();

    /**

     * @see MNcdParser::SetOriginL

     */

    void SetOriginL( const TDesC& aOrigin );

public: // From MNcdParserObserver

    /**

     * @see MNcdSubParserObserver::SubParserFinishedL

     */

    void SubParserFinishedL( const TDesC8& aTag, TInt aErrorCode );

private:

    void BeginL( CNcdSubParser* aSubParser );

protected:

    /**

     * Observer for parser events

     */

    CNcdParserObserverBundleImpl* iObservers;

    /**

     * Default observer for parser events

     * Owned.

     */

    MNcdProtocolDefaultObserver* iDefaultObserver;

    /**

     * Subparser used for further parsing

     */

    CNcdSubParser* iSubParser;

    /**

     * XML parser instance

     */

    Xml::CParser* iXmlParser;

    /**

     * Data buffer

     */

    CBufBase* iInputBuffer;

    /**

     * Set to ETrue by user when all data has been fed to the parser.

     * After processing the data, observer is called to indicate comlpetion.

     */

    TBool iPleaseFinish;

    /**

     * Status flag to indicate running in synchronous or asynchronous mode.

     */

    TBool iSynchronous;

    /**

     * Status flag indicating cancellation. The parsing should be stopped.

     */

    TBool iCancelled;

    /**

     * Origin data field, set according to SetOriginL(). Passed to some

     * observers.

     */

    HBufC* iOrigin;

private:

    HBufC8* iFeedBuffer;

    };

#endif