/** @file

* 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:  Declares the CUpnpStateVariableContentHandler class

 *

*/

#ifndef __UPNPSTATEVARIABLECONTENTHANDLER_H__

#define __UPNPSTATEVARIABLECONTENTHANDLER_H__

#include <babitflags.h>

#include "upnpcontenthandler.h"

class CUpnpStateVariable;

using namespace Xml;

/**

 *  This class handles state variable subtree of service descriptions

 *  It extends CUpnpContentHandler class, thus it is subsequent implementation of MContentHandler interface

 *  It is designed to be used by upnp controler that delegates to it events from xml sax parser   

 *

 *  @since Series60 2.6

 */

NONSHARABLE_CLASS( CUpnpStateVariableContentHandler ) : public CUpnpContentHandler

    {

protected:

    enum TState

        {

        EInitial,

        EName,

        EDataType,

        EDefaultValue

        };

public:

    /**

     * Two-phased constructor

     * @since Series60 3.2 

     * @return instance of CUpnpStateVariableContentHandler class

     */

    static CUpnpStateVariableContentHandler* NewL(

            CUpnpContentHandlersController& aController, 

            CUpnpStateVariable& aResultStateVariable );

    /**

     * Two-phased constructor. Leaves the object on CleanupStack

     * @since Series60 3.2 

     * @return instance of CUpnpStateVariableContentHandler class

     */

    static CUpnpStateVariableContentHandler* NewLC(

            CUpnpContentHandlersController& aController, 

            CUpnpStateVariable& aResultStateVariable );

    /**

     * Destructor of CUpnpStateVariableContentHandler class

     * @since Series60 3.2     

     */

    virtual ~CUpnpStateVariableContentHandler();

public: // from MContentHandler

    /**

     * This method is a callback to indicate an element has been parsed.

     * @param				aElement is a handle to the element's details.

     * @param				aAttributes contains the attributes for the element.

     */

    virtual void OnStartElementL( const RTagInfo& aElement, 

        const RAttributeArray& aAttributes );

    /**

     * This method is a callback to indicate the end of the element has been reached.

     * @param              aElement is a handle to the element's details.

     */

    virtual void OnEndElementL( const RTagInfo& aElement );

    /**

     * This method is a callback that sends the content of the element.

     * @param              aBytes is the raw content data for the element in one chunk

     */

    virtual void OnContentL( const TDesC8& aBytes );

protected:

    /**

     * Default C++ constructor 

     * @since Series60 3.2     

     */

    CUpnpStateVariableContentHandler( CUpnpContentHandlersController& aController,

            CUpnpStateVariable& aResultStateVariable );

private:

    CUpnpStateVariable& iResultStateVariable;

    TState iCurrentState;

    TBitFlags8 iFoundTags;

    };

#endif //__UPNPSTATEVARIABLECONTENTHANDLER_H__