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src
include
smbios
IObserver.h
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// vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=c:
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/*
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* Copyright (C) 2005 Dell Inc.
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* by Michael Brown <Michael_E_Brown@dell.com>
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* Licensed under the Open Software License version 2.1
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*
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* Alternatively, you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*/
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#ifndef IOBSERVER_H
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#define IOBSERVER_H
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// compat header should always be first header
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#include "
smbios/compat.h
"
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#include <list>
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// abi_prefix should be last header included before declarations
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#include "
smbios/config/abi_prefix.hpp
"
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namespace
observer
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{
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// forward declarations
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class
IObservable
;
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class
IObserver
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{
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public
:
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virtual
~IObserver
();
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virtual
void
update
(
const
IObservable
*whatChanged,
void
*param = 0 ) = 0;
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protected
:
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IObserver
();
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};
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class
IObservable
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{
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public
:
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virtual
~IObservable
();
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virtual
void
attach
(
IObserver
* )
const
;
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virtual
void
detach
(
IObserver
* )
const
;
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virtual
void
notify
(
void
*param = 0 )
const
;
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protected
:
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IObservable
();
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private
:
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mutable
std::list<IObserver *> observers;
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};
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}
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// always should be last thing in header file
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#include "
smbios/config/abi_suffix.hpp
"
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#endif
/* IOBSERVER_H */
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