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 | *
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6 | *
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7 | * This file is part of MoleCuilder.
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8 | *
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9 | * MoleCuilder is free software: you can redistribute it and/or modify
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10 | * it under the terms of the GNU General Public License as published by
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11 | * the Free Software Foundation, either version 2 of the License, or
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12 | * (at your option) any later version.
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13 | *
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14 | * MoleCuilder is distributed in the hope that it will be useful,
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 | * GNU General Public License for more details.
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18 | *
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19 | * You should have received a copy of the GNU General Public License
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20 | * along with MoleCuilder. If not, see <http://www.gnu.org/licenses/>.
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21 | */
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22 |
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23 | /*
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24 | * ActionHistory.cpp
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25 | *
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26 | * Created on: Mar 25, 2010
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27 | * Author: crueger
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28 | */
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29 |
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30 | // include config.h
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31 | #ifdef HAVE_CONFIG_H
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32 | #include <config.h>
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33 | #endif
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34 |
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35 | #include "CodePatterns/MemDebug.hpp"
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36 |
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37 | #include "Actions/ActionHistory.hpp"
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38 |
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39 | #include "Actions/ActionExceptions.hpp"
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40 |
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41 | #include <iostream>
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42 |
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43 | #include "CodePatterns/Singleton_impl.hpp"
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44 | #include "CodePatterns/Assert.hpp"
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45 |
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46 | using namespace MoleCuilder;
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47 |
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48 |
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49 | ActionHistory::ActionHistory()
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50 | {
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51 | Action::createStaticStateEntities();
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52 | }
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53 |
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54 | ActionHistory::~ActionHistory()
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55 | {
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56 | Action::removeStaticStateEntities();
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57 | }
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58 |
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59 | void ActionHistory::undoLast(){
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60 | if (!hasUndo()){
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61 | LOG(1, "Undo performed when the undo-queue was empty.");
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62 | return;
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63 | }
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64 | //ASSERT(history.size(),"Undo performed when the undo-queue was empty");
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65 | HistoryElement elem = history.back();
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66 | history.pop_back();
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67 | Action::state_ptr newState = elem.action->undo(elem.state);
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68 | if (newState == Action::failure)
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69 | throw ActionFailureException() << ActionNameString(elem.action->getName());
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70 | yrotsih.push_back(HistoryElement(elem.action,newState));
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71 | }
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72 | void ActionHistory::redoLast(){
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73 | if (!hasRedo()){
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74 | LOG(1, "Redo performed when the redo-queue was empty.");
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75 | return;
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76 | }
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77 | //ASSERT(yrotsih.size(),"Redo performed when the redo-queue was empty");
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78 | HistoryElement elem = yrotsih.back();
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79 | yrotsih.pop_back();
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80 | Action::state_ptr oldState = elem.action->redo(elem.state);
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81 | if (oldState == Action::failure)
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82 | throw ActionFailureException() << ActionNameString(elem.action->getName());
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83 | history.push_back(HistoryElement(elem.action,oldState));
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84 | }
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85 |
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86 | bool ActionHistory::hasUndo(){
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87 | return history.size()>0;
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88 | }
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89 |
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90 | bool ActionHistory::hasRedo(){
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91 | return yrotsih.size()>0;
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92 | }
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93 |
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94 | void ActionHistory::addElement(Action* action,Action::state_ptr state){
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95 | yrotsih.clear();
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96 | history.push_back(HistoryElement(action,state));
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97 | }
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98 |
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99 | void ActionHistory::clear(){
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100 | history.clear();
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101 | yrotsih.clear();
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102 | }
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103 |
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104 | void ActionHistory::init(){
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105 | ActionHistory *hist = new ActionHistory();
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106 | setInstance(hist);
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107 | }
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108 |
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109 | CONSTRUCT_SINGLETON(ActionHistory)
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110 |
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111 | /****************** Contained actions *******************/
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112 |
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