[80] | 1 | // |
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| 2 | // AbstractObserver.h |
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| 3 | // |
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| 4 | // $Id: //poco/1.3/Foundation/include/Poco/AbstractObserver.h#1 $ |
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| 5 | // |
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| 6 | // Library: Foundation |
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| 7 | // Package: Notifications |
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| 8 | // Module: NotificationCenter |
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| 9 | // |
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| 10 | // Definition of the AbstractObserver class. |
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| 11 | // |
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| 12 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
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| 13 | // and Contributors. |
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| 14 | // |
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| 15 | // Permission is hereby granted, free of charge, to any person or organization |
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| 16 | // obtaining a copy of the software and accompanying documentation covered by |
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| 17 | // this license (the "Software") to use, reproduce, display, distribute, |
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| 18 | // execute, and transmit the Software, and to prepare derivative works of the |
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| 19 | // Software, and to permit third-parties to whom the Software is furnished to |
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| 20 | // do so, all subject to the following: |
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| 21 | // |
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| 22 | // The copyright notices in the Software and this entire statement, including |
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| 23 | // the above license grant, this restriction and the following disclaimer, |
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| 24 | // must be included in all copies of the Software, in whole or in part, and |
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| 25 | // all derivative works of the Software, unless such copies or derivative |
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| 26 | // works are solely in the form of machine-executable object code generated by |
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| 27 | // a source language processor. |
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| 28 | // |
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| 29 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 30 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 31 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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| 32 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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| 33 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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| 34 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 35 | // DEALINGS IN THE SOFTWARE. |
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| 36 | // |
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| 37 | |
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| 38 | |
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| 39 | #ifndef Foundation_AbstractObserver_INCLUDED |
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| 40 | #define Foundation_AbstractObserver_INCLUDED |
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| 41 | |
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| 42 | |
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| 43 | #include "Poco/Foundation.h" |
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| 44 | #include "Poco/Notification.h" |
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| 45 | |
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| 46 | |
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| 47 | namespace Poco { |
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| 48 | |
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| 49 | |
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| 50 | class Foundation_API AbstractObserver |
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| 51 | /// The base class for all instantiations of |
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| 52 | /// the Observer and NObserver template classes. |
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| 53 | { |
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| 54 | public: |
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| 55 | AbstractObserver(); |
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| 56 | AbstractObserver(const AbstractObserver& observer); |
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| 57 | virtual ~AbstractObserver(); |
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| 58 | |
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| 59 | AbstractObserver& operator = (const AbstractObserver& observer); |
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| 60 | |
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| 61 | virtual void notify(Notification* pNf) const = 0; |
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| 62 | virtual bool equals(const AbstractObserver& observer) const = 0; |
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| 63 | virtual bool accepts(Notification* pNf) const = 0; |
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| 64 | virtual AbstractObserver* clone() const = 0; |
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| 65 | }; |
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| 66 | |
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| 67 | |
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| 68 | } // namespace Poco |
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| 69 | |
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| 70 | |
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| 71 | #endif // Foundation_AbstractObserver_INCLUDED |
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