| Last change
 on this file since 8fe1e2 was             e2e035e, checked in by Frederik Heber <heber@…>, 14 years ago | 
        
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Refactored all Observer stuff into own subfolder and split up into distinct modules.
 Observer/all.hpp is all that's needed.
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          | File size:
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| 1 | /* | 
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| 2 | * Project: MoleCuilder | 
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| 3 | * Description: creates and alters molecular systems | 
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| 4 | * Copyright (C)  2010 University of Bonn. All rights reserved. | 
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| 5 | * Please see the LICENSE file or "Copyright notice" in builder.cpp for details. | 
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| 6 | */ | 
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| 7 |  | 
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| 8 | /** | 
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| 9 | * \file observer.dox | 
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| 10 | * | 
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| 11 | * Created on: Dec 1, 2011 | 
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| 12 | *    Author: heber | 
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| 13 | */ | 
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| 14 |  | 
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| 15 | /** \page pattern-observer | 
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| 16 | * | 
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| 17 | * Basic structure for the observer pattern | 
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| 18 | * | 
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| 19 | * Observers register themselves with the observables to be notified when something changes. | 
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| 20 | * In the Observable code that changes, attributes should be started with OBSERVE;. This macro | 
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| 21 | * locks the observer mechanism while changes are done. At the end of the scope in which the | 
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| 22 | * macro was placed the lock is released. When the last lock is released all changes are | 
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| 23 | * propagated to the observers. | 
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| 24 | * | 
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| 25 | * Each observerable can have sub-observables. When one of these sub-observables changes and | 
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| 26 | * notifies its observers the observable that contains them will also notify its observers. | 
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| 27 | * This passing on of updates is blocked, when the main-observable is in the process of | 
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| 28 | * updating many of its internal sub-observables. This means the update is not passed, if | 
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| 29 | * it is produced while the main-observable itself is within any Observation block. | 
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| 30 | */ | 
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| 31 |  | 
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