//
// DefaultHandler.h
//
// $Id: //poco/Main/XML/include/SAX/DefaultHandler.h#5 $
//
// SAX-2 DefaultHandler class.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//


#ifndef SAX_DefaultHandler_INCLUDED
#define SAX_DefaultHandler_INCLUDED


#ifndef XML_XML_INCLUDED
#include "XML/XML.h"
#endif
#ifndef SAX_EntityResolver_INCLUDED
#include "SAX/EntityResolver.h"
#endif
#ifndef SAX_DTDHandler_INCLUDED
#include "SAX/DTDHandler.h"
#endif
#ifndef SAX_ContentHandler_INCLUDED
#include "SAX/ContentHandler.h"
#endif
#ifndef SAX_ErrorHandler_INCLUDED
#include "SAX/ErrorHandler.h"
#endif


XML_BEGIN


class XML_API DefaultHandler: public EntityResolver, public DTDHandler, public ContentHandler, public ErrorHandler
	/// Default base class for SAX2 event handlers. 
	/// This class is available as a convenience base class for SAX2 applications: 
	/// it provides default implementations for all of the
	/// callbacks in the four core SAX2 handler classes:
	///      * EntityResolver 
	///      * DTDHandler 
	///      * ContentHandler 
	///      * ErrorHandler 
	/// Application writers can extend this class when they need to implement only 
	/// part of an interface; parser writers can instantiate this
	/// class to provide default handlers when the application has not supplied its own.
{
public:
	DefaultHandler();
		/// Creates the DefaultHandler.
		
	~DefaultHandler();
		/// Destroys the DefaultHandler.
	
	// EntityResolver
	InputSource* resolveEntity(const XMLString* publicId, const XMLString& systemId);
	void releaseInputSource(InputSource* pSource);
	
	// DTDHandler
	void notationDecl(const XMLString& name, const XMLString* publicId, const XMLString* systemId);
	void unparsedEntityDecl(const XMLString& name, const XMLString* publicId, const XMLString& systemId, const XMLString& notationName);

	// ContentHandler
	void setDocumentLocator(const Locator* loc);
	void startDocument();
	void endDocument();
	void startElement(const XMLString& uri, const XMLString& localName, const XMLString& qname, const Attributes& attributes);
	void endElement(const XMLString& uri, const XMLString& localName, const XMLString& qname);
	void characters(const XMLChar ch[], int start, int length);
	void ignorableWhitespace(const XMLChar ch[], int start, int length);
	void processingInstruction(const XMLString& target, const XMLString& data);
	void startPrefixMapping(const XMLString& prefix, const XMLString& uri);
	void endPrefixMapping(const XMLString& prefix);
	void skippedEntity(const XMLString& name);
	
	// ErrorHandler
	void warning(const SAXException& exc);
	void error(const SAXException& exc);
	void fatalError(const SAXException& exc);
};


XML_END


#endif // SAX_DefaultHandler_INCLUDED