source: src/Actions/ActionHistory.cpp@ 23359f

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Last change on this file since 23359f was 0b2ce9, checked in by Frederik Heber <heber@…>, 14 years ago

Implemented macros for automatically generating repetitive stuff around Actions.

The idea is that only the following items have to be provided for by the user

  • parameters (i.e. for each the following tupel: type, token and reference)
  • perform...(), ...Undo(), ...

Therefore, we have three new files:

  • Action_impl_header.hpp: Is for the declarations in the header
  • Action_impl_pre.hpp: Is before definition of functions
  • Action_impl_post.hpp: is after definition of functions (cleanup)

Changes:

  • Property mode set to 100644
File size: 3.9 KB
Line 
1/*
2 * Project: MoleCuilder
3 * Description: creates and alters molecular systems
4 * Copyright (C) 2010 University of Bonn. All rights reserved.
5 * Please see the LICENSE file or "Copyright notice" in builder.cpp for details.
6 */
7
8/*
9 * ActionHistory.cpp
10 *
11 * Created on: Mar 25, 2010
12 * Author: crueger
13 */
14
15// include config.h
16#ifdef HAVE_CONFIG_H
17#include <config.h>
18#endif
19
20#include "Helpers/MemDebug.hpp"
21
22#include "ActionHistory.hpp"
23
24#include <iostream>
25
26#include "Patterns/Singleton_impl.hpp"
27#include "Helpers/Assert.hpp"
28#include "Helpers/MemDebug.hpp"
29
30using namespace std;
31
32ActionHistory::ActionHistory()
33{}
34
35ActionHistory::~ActionHistory()
36{}
37
38void ActionHistory::undoLast(){
39 ASSERT(history.size(),"Undo performed when the undo-queue was empty");
40 HistoryElement elem = history.back();
41 history.pop_back();
42 Action::state_ptr newState = elem.action->undo(elem.state);
43 yrotsih.push_back(HistoryElement(elem.action,newState));
44}
45void ActionHistory::redoLast(){
46 ASSERT(yrotsih.size(),"Redo performed when the redo-queue was empty");
47 HistoryElement elem = yrotsih.back();
48 yrotsih.pop_back();
49 Action::state_ptr oldState = elem.action->redo(elem.state);
50 history.push_back(HistoryElement(elem.action,oldState));
51}
52
53bool ActionHistory::hasUndo(){
54 return history.size()>0;
55}
56
57bool ActionHistory::hasRedo(){
58 return yrotsih.size()>0;
59}
60
61void ActionHistory::addElement(Action* action,Action::state_ptr state){
62 yrotsih.clear();
63 history.push_back(HistoryElement(action,state));
64}
65
66void ActionHistory::clear(){
67 history.clear();
68 yrotsih.clear();
69}
70
71void ActionHistory::init(){
72 ActionHistory *hist = new ActionHistory();
73 setInstance(hist);
74 new UndoAction(hist);
75 new RedoAction(hist);
76}
77
78CONSTRUCT_SINGLETON(ActionHistory)
79
80/****************** Contained actions *******************/
81
82const char ActionHistory::UndoAction::NAME[] = "undo";
83
84ActionHistory::UndoAction::UndoAction(ActionHistory *_hist) :
85 Action(NAME),
86 hist(_hist)
87{}
88
89ActionHistory::UndoAction::~UndoAction(){}
90
91bool ActionHistory::UndoAction::canUndo(){
92 return false;
93}
94
95bool ActionHistory::UndoAction::shouldUndo(){
96 return false;
97}
98
99bool ActionHistory::UndoAction::isActive(){
100 return hist->hasUndo();
101}
102
103void ActionHistory::UndoAction::getParametersfromValueStorage()
104{}
105
106Dialog* ActionHistory::UndoAction::fillDialog(Dialog *dialog){
107 ASSERT(dialog,"No Dialog given when filling action dialog");
108 return dialog;
109}
110
111Action::state_ptr ActionHistory::UndoAction::performCall(){
112 std::cout << "Undo" << std::endl;
113 hist->undoLast();
114 return Action::success;
115}
116
117Action::state_ptr ActionHistory::UndoAction::performUndo(Action::state_ptr){
118 ASSERT(0,"Cannot undo an undo (should use redo for this");
119 return Action::success;
120}
121
122Action::state_ptr ActionHistory::UndoAction::performRedo(Action::state_ptr){
123 ASSERT(0,"Cannot redo an undo");
124 return Action::success;
125}
126
127const char ActionHistory::RedoAction::NAME[] = "redo";
128
129ActionHistory::RedoAction::RedoAction(ActionHistory *_hist) :
130 Action(NAME),
131 hist(_hist)
132{}
133
134ActionHistory::RedoAction::~RedoAction(){}
135
136bool ActionHistory::RedoAction::canUndo(){
137 return false;
138}
139
140bool ActionHistory::RedoAction::shouldUndo(){
141 return false;
142}
143
144bool ActionHistory::RedoAction::isActive(){
145 return hist->hasRedo();
146}
147
148void ActionHistory::RedoAction::getParametersfromValueStorage()
149{}
150
151Dialog* ActionHistory::RedoAction::fillDialog(Dialog *dialog){
152 ASSERT(dialog,"No Dialog given when filling action dialog");
153 return dialog;
154}
155
156Action::state_ptr ActionHistory::RedoAction::performCall(){
157 std::cout << "Redo" << std::endl;
158 hist->redoLast();
159 return Action::success;
160}
161
162Action::state_ptr ActionHistory::RedoAction::performUndo(Action::state_ptr){
163 ASSERT(0,"Cannot undo a redo (should use undo for this");
164 return Action::success;
165}
166
167Action::state_ptr ActionHistory::RedoAction::performRedo(Action::state_ptr){
168 ASSERT(0,"Cannot redo a redo");
169 return Action::success;
170}
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