src/main/java/de/uapcore/sudoku/ActionHandler.java@576e7a2861ae
src/main/java/de/uapcore/sudoku/ActionHandler.java
Sat, 25 Jul 2020 14:01:28 +0200
- author
- Mike Becker <universe@uap-core.de>
- date
- Sat, 25 Jul 2020 14:01:28 +0200
- changeset 9
- 576e7a2861ae
- parent 7
- src/de/uapcore/sudoku/ActionHandler.java@2c0a2766461c
- child 10
- 369903afbb29
- permissions
- -rw-r--r--
converts to maven project
1 /*
2 * Copyright 2013 Mike Becker. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 *
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
25 */
27 package de.uapcore.sudoku;
29 import javax.swing.*;
30 import java.awt.event.ActionEvent;
31 import java.awt.event.ActionListener;
32 import java.io.File;
33 import java.io.IOException;
35 /**
36 *
37 * @author mike
38 */
39 public final class ActionHandler implements ActionListener {
41 public static final String SAVE = "save";
42 public static final String CHECK = "check";
43 public static final String SOLVE = "solve";
45 public static final String NEW = "new";
46 public static final String OPEN = "open";
47 public static final String SAVE_AS = "save as";
48 public static final String QUIT = "quit";
49 public static final String ABOUT = "about";
51 private Field field;
52 private Solver solver;
53 private DocumentHandler doc;
55 public ActionHandler(Field f) {
56 field = f;
57 solver = new Solver();
58 doc = new DocumentHandler();
59 }
61 private boolean chooseSaveFilename() {
62 JFileChooser fc = new JFileChooser(".");
63 fc.setMultiSelectionEnabled(false);
64 if (fc.showSaveDialog(field) == JFileChooser.APPROVE_OPTION) {
65 File f = fc.getSelectedFile();
66 if (f.exists()) {
67 int result = JOptionPane.showConfirmDialog(field,
68 "Bereits existierende Datei überschreiben?", "Sudoku",
69 JOptionPane.YES_NO_OPTION);
70 if (result == JOptionPane.YES_OPTION) {
71 doc.setFilename(f.getAbsolutePath());
72 return true;
73 } else {
74 return false;
75 }
76 } else {
77 doc.setFilename(f.getAbsolutePath());
78 return true;
79 }
80 } else {
81 return false;
82 }
83 }
85 private void open() {
86 JFileChooser fc = new JFileChooser(".");
87 fc.setMultiSelectionEnabled(false);
88 if (fc.showOpenDialog(field) == JFileChooser.APPROVE_OPTION) {
89 File f = fc.getSelectedFile();
90 doc.setFilename(f.getAbsolutePath());
91 try {
92 doc.load(field);
93 } catch (IOException e) {
94 JOptionPane.showMessageDialog(field,
95 "Datei konnte nicht geladen werden: "+e.getMessage(),
96 "Sudoku", JOptionPane.ERROR_MESSAGE);
97 }
98 }
99 }
101 private boolean save(boolean rename) {
102 if (!doc.isFilenameSet() || rename) {
103 if (!chooseSaveFilename()) {
104 return false;
105 }
106 }
107 if (solver.check(field)) {
108 field.setAllCellsModified(false);
109 try {
110 doc.save(field);
111 } catch (IOException e) {
112 JOptionPane.showMessageDialog(field,
113 "Datei konnte nicht gespeichert werden: "+e.getMessage(),
114 "Sudoku", JOptionPane.ERROR_MESSAGE);
115 }
116 return true;
117 } else {
118 JOptionPane.showMessageDialog(field,
119 "Das Feld kann mit Fehlern nicht gespeichert werden!",
120 "Sudoku", JOptionPane.ERROR_MESSAGE);
121 return false;
122 }
123 }
125 private void check() {
126 if (solver.check(field)) {
127 JOptionPane.showMessageDialog(field, "Überprüfung erfolgreich!",
128 "Sudoku", JOptionPane.INFORMATION_MESSAGE);
129 } else {
130 JOptionPane.showMessageDialog(field, "Das Feld enthält Fehler!",
131 "Sudoku", JOptionPane.WARNING_MESSAGE);
132 }
133 }
135 private void solve() {
136 if (!solver.check(field) || !solver.solve(field)) {
137 JOptionPane.showMessageDialog(field, "Das Feld ist nicht lösbar!",
138 "Sudoku", JOptionPane.WARNING_MESSAGE);
139 }
140 }
142 private boolean saveUnsaved() {
143 boolean proceed = false;
144 if (field.isAnyCellModified()) {
145 int result = JOptionPane.showConfirmDialog(field,
146 "Das Feld ist ungespeichert - jetzt speichern?",
147 "Sudoku", JOptionPane.YES_NO_CANCEL_OPTION);
148 if (result == JOptionPane.YES_OPTION) {
149 if (save(false)) {
150 proceed = true;
151 }
152 } else if (result == JOptionPane.NO_OPTION) {
153 proceed = true;
154 }
155 } else {
156 proceed = true;
157 }
159 return proceed;
160 }
162 @Override
163 public void actionPerformed(ActionEvent e) {
164 switch (e.getActionCommand()) {
165 case NEW:
166 if (saveUnsaved()) {
167 doc.clearFilename();
168 field.clear();
169 }
170 break;
171 case OPEN:
172 open();
173 break;
174 case SAVE:
175 save(false);
176 break;
177 case SAVE_AS:
178 save(true);
179 break;
180 case CHECK:
181 check();
182 break;
183 case SOLVE:
184 solve();
185 break;
186 case QUIT:
187 if (saveUnsaved()) {
188 System.exit(0);
189 }
190 break;
191 case ABOUT:
192 JOptionPane.showMessageDialog(field,
193 "Sudoku - Copyright (c) 2013 Mike Becker\nwww.uap-core.de"+
194 "\nPublished under the BSD License",
195 "Sudoku", JOptionPane.INFORMATION_MESSAGE);
196 break;
197 default:
198 throw new UnsupportedOperationException(
199 "unknown action: "+e.getActionCommand());
200 }
201 }
203 }
