observable.h
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/******************************************************
* Presage, an extensible predictive text entry system
* ---------------------------------------------------
*
* Copyright (C) 2008 Matteo Vescovi <matteo.vescovi@yahoo.co.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
**********(*)*/
#ifndef PRESAGE_OBSERVABLE
#define PRESAGE_OBSERVABLE
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include "observer.h"
#include <list>
#include <string>
class Observable {
public:
virtual ~Observable ();
virtual void attach (Observer* observer);
virtual void detach (Observer* observer);
virtual void notify ();
virtual std::string get_name () const = 0;
virtual std::string get_value () const = 0;
protected:
Observable ();
private:
std::list <Observer*> observers;
};
#endif // PRESAGE_OBSERVABLE
Observable::notify
virtual void notify()
Definition observable.cpp:44
Observable::detach
virtual void detach(Observer *observer)
Definition observable.cpp:39
Observable::attach
virtual void attach(Observer *observer)
Definition observable.cpp:34
Observable::~Observable
virtual ~Observable()
Definition observable.cpp:29
Observable::get_name
virtual std::string get_name() const =0
Observable::get_value
virtual std::string get_value() const =0
Observable::observers
std::list< Observer * > observers
Definition observable.h:52
Observable::Observable
Observable()
Definition observable.cpp:54
Observer
Definition observer.h:34
observer.h