//
// DocumentEvent.h
//
// $Id: //poco/Main/XML/include/DOM/DocumentEvent.h#5 $
//
// Definition of the DOM DocumentEvent interface.
//
// 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;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef DOM_DocumentEvent_INCLUDED
#define DOM_DocumentEvent_INCLUDED


#ifndef XML_XML_INCLUDED
#include "XML/XML.h"
#endif
#ifndef XML_XMLString_INCLUDED
#include "XML/XMLString.h"
#endif


XML_BEGIN


class Event;


class XML_API DocumentEvent
	/// The DocumentEvent interface provides a mechanism by which the user can create
	/// an Event of a type supported by the implementation. It is expected that
	/// the DocumentEvent interface will be implemented on the same object which
	/// implements the Document interface in an implementation which supports the
	/// Event model.
{
public:
	virtual Event* createEvent(const XMLString& eventType) const = 0;
		/// Creates an event of the specified type.
		///
		/// The eventType parameter specifies the type of Event interface to be created.
		/// If the Event interface specified is supported by the implementation this
		/// method will return a new Event of the interface type requested. If the Event
		/// is to be dispatched via the dispatchEvent method the appropriate event init
		/// method must be called after creation in order to initialize the Event's
		/// values. As an example, a user wishing to synthesize some kind of UIEvent
		/// would call createEvent with the parameter "UIEvents". The initUIEvent method
		/// could then be called on the newly created UIEvent to set the specific type
		/// of UIEvent to be dispatched and set its context information.
		/// The createEvent method is used in creating Events when it is either inconvenient
		/// or unnecessary for the user to create an Event themselves. In cases where
		/// the implementation provided Event is insufficient, users may supply their
		/// own Event implementations for use with the dispatchEvent method.

protected:
	virtual ~DocumentEvent();
};


XML_END


#endif // DOM_DocumentEvent_INCLUDED