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) 2010-2012 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 | * ActionHistory.cpp
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10 | *
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11 | * Created on: Mar 25, 2010
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12 | * Author: crueger
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13 | */
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14 |
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15 | // include config.h
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16 | #ifdef HAVE_CONFIG_H
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17 | #include <config.h>
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18 | #endif
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19 |
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20 | #include "CodePatterns/MemDebug.hpp"
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21 |
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22 | #include "Actions/ActionHistory.hpp"
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23 |
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24 | #include "Actions/ActionExceptions.hpp"
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25 |
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26 | #include <iostream>
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27 |
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28 | #include "CodePatterns/Singleton_impl.hpp"
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29 | #include "CodePatterns/Assert.hpp"
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30 |
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31 | using namespace MoleCuilder;
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32 |
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33 |
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34 | ActionHistory::ActionHistory()
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35 | {
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36 | Action::createStaticStateEntities();
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37 | }
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38 |
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39 | ActionHistory::~ActionHistory()
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40 | {
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41 | Action::removeStaticStateEntities();
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42 | }
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43 |
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44 | void ActionHistory::undoLast(){
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45 | ASSERT(history.size(),"Undo performed when the undo-queue was empty");
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46 | HistoryElement elem = history.back();
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47 | history.pop_back();
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48 | Action::state_ptr newState = elem.action->undo(elem.state);
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49 | if (newState == Action::failure)
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50 | throw ActionFailureException() << ActionNameString(elem.action->getName());
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51 | yrotsih.push_back(HistoryElement(elem.action,newState));
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52 | }
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53 | void ActionHistory::redoLast(){
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54 | ASSERT(yrotsih.size(),"Redo performed when the redo-queue was empty");
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55 | HistoryElement elem = yrotsih.back();
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56 | yrotsih.pop_back();
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57 | Action::state_ptr oldState = elem.action->redo(elem.state);
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58 | if (oldState == Action::failure)
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59 | throw ActionFailureException() << ActionNameString(elem.action->getName());
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60 | history.push_back(HistoryElement(elem.action,oldState));
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61 | }
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62 |
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63 | bool ActionHistory::hasUndo(){
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64 | return history.size()>0;
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65 | }
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66 |
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67 | bool ActionHistory::hasRedo(){
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68 | return yrotsih.size()>0;
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69 | }
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70 |
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71 | void ActionHistory::addElement(Action* action,Action::state_ptr state){
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72 | yrotsih.clear();
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73 | history.push_back(HistoryElement(action,state));
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74 | }
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75 |
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76 | void ActionHistory::clear(){
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77 | history.clear();
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78 | yrotsih.clear();
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79 | }
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80 |
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81 | void ActionHistory::init(){
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82 | ActionHistory *hist = new ActionHistory();
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83 | setInstance(hist);
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84 | }
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85 |
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86 | CONSTRUCT_SINGLETON(ActionHistory)
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87 |
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88 | /****************** Contained actions *******************/
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89 |
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