State.hpp
#if !defined (__STATE_HPP)
#define __STATE_HPP
/*
CoreLinux++
Copyright (C) 1999,2000 CoreLinux Consortium
The CoreLinux++ Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The CoreLinux++ Library Library is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#if !defined(__COMMON_HPP)
#include <Common.hpp>
#endif
namespace corelinux
{
DECLARE_CLASS( Context );
DECLARE_CLASS( State );
class State
{
public:
State( void );
virtual ~State( void );
//
// Operator overloads
//
bool operator==( StateCref ) const;
//
// Mutators
//
virtual void handle( void ) = 0;
protected:
State( StateCref ) throw ( Assertion );
StateRef operator=( StateCref ) throw ( Assertion );
void setCurrentState( ContextPtr, StatePtr )
throw ( NullPointerException );
};
}
#endif // if !defined(__STATE_HPP)
/*
Common rcs information do not modify
$Author: frankc $
$Revision: 1.1 $
$Date: 2000/05/17 03:43:30 $
$Locker: $
*/
corelinux::State
Allow an object to alter its behavior when its internal state changes.
Definition: State.hpp:40
corelinux::State::setCurrentState
void setCurrentState(ContextPtr, StatePtr)
Sets context state change.
Definition: State.cpp:83
corelinux::State::~State
virtual ~State(void)
Virtual Destructor.
Definition: State.cpp:57
corelinux::NullPointerException
NullPointerException is the base exception type for NullPointer.
Definition: NullPointerException.hpp:40
corelinux::State::operator==
bool operator==(StateCref) const
Equality operator overload.
Definition: State.cpp:76
corelinux::State::operator=
StateRef operator=(StateCref)
Assignment operator overload.
Definition: State.cpp:66
corelinux::State::handle
virtual void handle(void)=0
Called by context.
corelinux::Context
Context defines the interface to clients and maintains an instance of a State subclass.
Definition: Context.hpp:40
corelinux::Assertion
Assertion is-a Exception created when an assertion fails.
Definition: Assertion.hpp:423
corelinux::State::State
State(void)
Default Constructor.
Definition: State.cpp:39

This is the CoreLinux++ reference manual
Provided by The CoreLinux Consortium