eventtarget.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// EventTarget.h
//
// $Id: //poco/Main/XML/include/DOM/EventTarget.h#5 $
//
// Definition of the DOM EventTarget 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_EventTarget_INCLUDED
#define DOM_EventTarget_INCLUDED


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


XML_BEGIN


class EventListener;
class Event;


class XML_API EventTarget: public DOMObject
	/// The EventTarget interface is implemented by all Nodes in an implementation
	/// which supports the DOM Event Model. Therefore, this interface can be obtained
	/// by using binding-specific casting methods on an instance of the Node interface.
	/// The interface allows registration and removal of EventListeners on an EventTarget
	/// and dispatch of events to that EventTarget.
{
public:
	virtual void addEventListener(const XMLString& type, EventListener* listener, bool useCapture) = 0;
		/// This method allows the registration of event listeners on 
		/// the event target. If an EventListener is added to an
		/// EventTarget while it is processing an event, it will not 
		/// be triggered by the current actions but may be triggered
		/// during a later stage of event flow, such as the bubbling phase.
		/// If multiple identical EventListeners are registered on the same 
		/// EventTarget with the same parameters the duplicate instances are 
		/// discarded. They do not cause the EventListener to be called twice and since they are
		/// discarded they do not need to be removed with the removeEventListener method. 	
	
	virtual void removeEventListener(const XMLString& type, EventListener* listener, bool useCapture) = 0;
		/// This method allows the removal of event listeners from the event 
		/// target. If an EventListener is removed from an EventTarget while it is 
		/// processing an event, it will not be triggered by the current actions. 
		/// EventListeners can never be invoked after being removed.
		/// Calling removeEventListener with arguments which do not identify 
		/// any currently registered EventListener on the EventTarget has no effect. 

	virtual bool dispatchEvent(Event* evt) = 0;
		/// This method allows the dispatch of events into the implementations 
		/// event model. Events dispatched in this manner will have the same capturing and 
		/// bubbling behavior as events dispatched directly by the
		/// implementation. The target of the event is the EventTarget on 
		/// which dispatchEvent is called. 

protected:
	virtual ~EventTarget();
};


XML_END


#endif // DOM_EventTarget_INCLUDED