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 actions.dox
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10 | *
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11 | * Created on: Oct 28, 2011
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12 | * Author: heber
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13 | */
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14 |
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15 | /** \page actions Actions
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16 | *
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17 | * Actions are Command patterns (http://en.wikipedia.org/wiki/Command_pattern)
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18 | * to allow for undoing and redoing. Each specific Action derives from this
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19 | * class to implement a certain functionality. There is a lot of preprocessor
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20 | * magic implemented for making this as easy as possible. In effect you only
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21 | * have to create three files of which only one actually contains more than a
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22 | * few lines, namely the code of the Action itself.
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23 | *
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24 | * Each Action has thus three types of functionalty: do, undo, and redo.
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25 | *
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26 | * The ActionRegistry contains a prototype of each Action under its token
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27 | * such that an instance can be retrieved by knowing this token.
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28 | *
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29 | * Each Action obtains its parameter from a central ValueStorage such that
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30 | * they are independent of where the parameter originated from: a command line
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31 | * parameter, a value entered in a graphical dialog or given via the keyboard
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32 | * in a terminal. That's why each begins with a function call to
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33 | * getParametersfromValueStorage() to fill its internal Action::params
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34 | * structure.
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35 | *
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36 | * Also there is a regression test (\ref regression-test) for each Action to
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37 | * check that it always behaves the same no matter how much the code
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38 | * implementing actually has changed.
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39 | *
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40 | * \section actions-add To add a new action ...
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41 | *
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42 | * The following steps have to be done for adding a new action:
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43 | * -# Create three new files .cpp, .def, and .hpp
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44 | * -# Add the files to \b src/Actions/Makefile.am.
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45 | * -# Add the name of the Action to \b src/Actions/GlobalListOfActions.hpp
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46 | * such that the ActionRegistry knows about it and can instantiate a
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47 | * prototype.
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48 | *
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49 | *
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50 | * \date 2011-10-31
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51 | *
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52 | */
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