presage 0.9.1
observable.h
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1
2/******************************************************
3 * Presage, an extensible predictive text entry system
4 * ---------------------------------------------------
5 *
6 * Copyright (C) 2008 Matteo Vescovi <matteo.vescovi@yahoo.co.uk>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 *
22 **********(*)*/
23
24
25#ifndef PRESAGE_OBSERVABLE
26#define PRESAGE_OBSERVABLE
27
28#if HAVE_CONFIG_H
29# include "config.h"
30#endif
31
32#include "observer.h"
33
34#include <list>
35#include <string>
36
38public:
39 virtual ~Observable ();
40
41 virtual void attach (Observer* observer);
42 virtual void detach (Observer* observer);
43 virtual void notify ();
44
45 virtual std::string get_name () const = 0;
46 virtual std::string get_value () const = 0;
47
48protected:
49 Observable ();
50
51private:
52 std::list <Observer*> observers;
53
54};
55
56#endif // PRESAGE_OBSERVABLE
virtual void notify()
Definition: observable.cpp:44
virtual void detach(Observer *observer)
Definition: observable.cpp:39
virtual void attach(Observer *observer)
Definition: observable.cpp:34
virtual ~Observable()
Definition: observable.cpp:29
virtual std::string get_name() const =0
virtual std::string get_value() const =0
std::list< Observer * > observers
Definition: observable.h:52