/*

* Copyright (c) 2002 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:  

*

*/

/**

 * DO NOT USE THIS API. DEPRECATED AND REMOVED IN S60 5.0. USE SYMBIAN XML FRAMEWORK INSTEAD.

 */

#ifndef __MXMLCONTENTHANDLER_H

#define __MXMLCONTENTHANDLER_H

//  INCLUDES

#include <MXMLAttributes.h>

#include <cxml_nw2cxmltypes.h>

// CLASS DECLARATION

/**

*  Interface for SAX Parser Callback events.

*  If an application (client) needs to be informed of basic parsing events, 

*  it implements this interface and registers an instance with the SAX parser using the SetContentHandler() method.

*  The parser uses the instance to report basic document-related events like the start and end of elements.

*

*  @lib XMLInterface.dll

*  @since ?Series60_version

*/

class MXMLContentHandler

{

public:

/**

* Receive notification of the beginning of a document.

* @since ?Series60_version

* @param none

* @return none

*/		

    virtual TInt StartDocument() = 0;

/**

* Receive notification of the end of a document.

* @since ?Series60_version

* @param none

* @return none

*/

	virtual TInt EndDocument() = 0;

/**

* Receive notification of the beginning of an element.

* @since ?Series60_version

* @param aURI: The Namespace URI, or the empty string if the element has no Namespace URI or if Namespace

*              processing is not being performed.

* @param aLocalName: The local name (without prefix), or the empty string if Namespace processing is not being

*                    performed.

* @param aName: The qualified name, or the empty string if qualified names are not available.

* @param aAttributeList: The attributes attached to the element. If there are no attributes, it shall be an 

*                        empty Attributes object. 

*        

* @return 1 if success 0 if failure.

*/

	inline virtual TInt StartElement(TDesC& /*aURI*/, TDesC& /*aLocalName*/, TDesC& /*aName*/, MXMLAttributes* /*aAttributeList*/){return 1;}

/**

* Receive notification of the end of an element.

* @since ?Series60_version

* @param aURI: The Namespace URI, or the empty string if the element has no Namespace URI or if Namespace

*              processing is not being performed.

* @param aLocalName: The local name (without prefix), or the empty string if Namespace processing is not being

*                    performed.

* @param aName: The qualified name, or the empty string if qualified names are not available.

* @return 1 if success 0 if failure.

*/

	inline virtual TInt EndElement(TDesC& /*aURI*/, TDesC& /*aLocalName*/, TDesC& /*aName*/){return 1;}

/**

* Receive notification of character data inside an element.

* @since ?Series60_version

* @param aBuff: The characters.

* @param aStart: The start position in the character buffer.

* @param aLength: The number of characters to use from the character buffer.

* @return 1 if success 0 if failure.

*/

	inline virtual TInt Charecters(TDesC& /*aBuf*/, TInt /*aStart*/, TInt /*aLength*/){return 1;}

/**

* Receive notification of XML comment.

* @since ?Series60_version

* @param aComment: Buffer containing the comment.

* @return 1 if success 0 if failure.

*/

	inline virtual TInt Comment(TDesC& /*aComment*/){return 1;}

/**

* Receive notification of a processing instruction

* @since ?Series60_version

* @param aTarget: The processing instruction target.

* @param aData: The processing instruction data, or null if none is supplied.

* @return 1 if success 0 if failure.

*/

    inline virtual TInt ProcessingInstructions(TDesC& /*aTarget*/, TDesC& /*aData*/){return 1;}

/**

* Receive notification of ignorable whitespace in element content.

* @since ?Series60_version

* @param aString: The whitespace characters.

* @return 1 if success 0 if failure.

*/

	// R&D: Feature: IgnoreWhiteSpace missing from XMLInterface

	inline virtual TInt IgnoreWhiteSpace(TDesC& /*aString*/){return 1;}; 

/**

* Receive notification of beginning of some internal and external XML entities.

* @since ?Series60_version

* @param aName: The name of the entity.

* @return 1 if success 0 if failure.

*/

	inline virtual TInt StartEntity(TDesC& /*aName*/){return 1;};  

/**

* Receive notification of end of XML entities.

* @since ?Series60_version

* @param aName: The name of the entity.

* @return 1 if success 0 if failure.

*/

	inline virtual TInt EndEntity(TDesC& /*aName*/){return 1;}  

/**

* Receive notification of a skipped entity.

* @since ?Series60_version

* @param aName: The name of the skipped entity.

* @return 1 if success 0 if failure.

*/

	// R&D: Feature: SkippedEntity missing from XMLInterface

	inline virtual TInt SkippedEntity(TDesC& /*aName*/){return 1;} 

/**

* Receive notification of beginning of CData section.

* @since ?Series60_version

* @param none

* @return 1 if success 0 if failure.

*/

	inline virtual TInt StartCDATA(){return 1;}

/**

* Receive notification of end of CData section.

* @since ?Series60_version

* @param aName: none.

* @return 1 if success 0 if failure.

*/

	inline virtual TInt EndCDATA(){return 1;}

/**

* Receive notification of error situation during parsing.

* @since ?Series60_version

* @param aErrorCode: Error status code.

* @param aSeverity: Error Severity.

* @return 1 if success 0 if failure.

*/

	inline virtual TInt Error(TInt /*aErrorCode*/, TInt /*aSeverity*/){return 1;}

/**

* Returns parsed buffer to client.

* @since Series60 3.1

* @param aBuf Buffer with parsed data.

*/

	inline virtual void DataBuffer(const TDesC16& /*aBuf*/){return;}

/**

* Returns reader index

* @since Series60 3.1

* @param aIndex - reader index

*/

	inline virtual void ReaderIndex(NW_Uint32 /*aIndex*/){return;}

};

#endif      // __MXMLCONTENTHANDLER_H   

// End of File