1 | // |
2 | // AbstractObserver.h |
3 | // |
4 | // Library: Foundation |
5 | // Package: Notifications |
6 | // Module: NotificationCenter |
7 | // |
8 | // Definition of the AbstractObserver class. |
9 | // |
10 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
11 | // and Contributors. |
12 | // |
13 | // SPDX-License-Identifier: BSL-1.0 |
14 | // |
15 | |
16 | |
17 | #ifndef Foundation_AbstractObserver_INCLUDED |
18 | #define Foundation_AbstractObserver_INCLUDED |
19 | |
20 | |
21 | #include "Poco/Foundation.h" |
22 | #include "Poco/Notification.h" |
23 | |
24 | |
25 | namespace Poco { |
26 | |
27 | |
28 | class Foundation_API AbstractObserver |
29 | /// The base class for all instantiations of |
30 | /// the Observer and NObserver template classes. |
31 | { |
32 | public: |
33 | AbstractObserver(); |
34 | AbstractObserver(const AbstractObserver& observer); |
35 | virtual ~AbstractObserver(); |
36 | |
37 | AbstractObserver& operator = (const AbstractObserver& observer); |
38 | |
39 | virtual void notify(Notification* pNf) const = 0; |
40 | virtual bool equals(const AbstractObserver& observer) const = 0; |
41 | virtual bool accepts(Notification* pNf) const = 0; |
42 | virtual AbstractObserver* clone() const = 0; |
43 | virtual void disable() = 0; |
44 | }; |
45 | |
46 | |
47 | } // namespace Poco |
48 | |
49 | |
50 | #endif // Foundation_AbstractObserver_INCLUDED |
51 | |