universe@3: /*
universe@3:  * Copyright 2013 Mike Becker. All rights reserved.
universe@3:  * 
universe@3:  * Redistribution and use in source and binary forms, with or without
universe@3:  * modification, are permitted provided that the following conditions are met:
universe@3:  * 
universe@3:  * 1. Redistributions of source code must retain the above copyright
universe@3:  *    notice, this list of conditions and the following disclaimer.
universe@3:  * 
universe@3:  * 2. Redistributions in binary form must reproduce the above copyright
universe@3:  *    notice, this list of conditions and the following disclaimer in the
universe@3:  *    documentation and/or other materials provided with the distribution.
universe@3:  * 
universe@3:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@3:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@3:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@3:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@3:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@3:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@3:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@3:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@3:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@3:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@3:  * POSSIBILITY OF SUCH DAMAGE.
universe@3:  */
universe@3: 
universe@2: package de.uapcore.sudoku;
universe@2: 
universe@2: import java.awt.event.ActionEvent;
universe@2: import java.awt.event.ActionListener;
universe@6: import java.io.File;
universe@6: import java.io.IOException;
universe@6: import javax.swing.JFileChooser;
universe@2: import javax.swing.JOptionPane;
universe@2: 
universe@2: /**
universe@2:  *
universe@2:  * @author mike
universe@2:  */
universe@2: public final class ActionHandler implements ActionListener {
universe@2:     
universe@2:     public static final String SAVE = "save";
universe@2:     public static final String CHECK = "check";
universe@2:     public static final String SOLVE = "solve";
universe@2:     
universe@3:     public static final String NEW = "new";
universe@3:     public static final String OPEN = "open";
universe@3:     public static final String SAVE_AS = "save as";
universe@3:     public static final String QUIT = "quit";
universe@3:     public static final String ABOUT = "about";
universe@3:     
universe@2:     private Field field;
universe@2:     private Solver solver;
universe@5:     private DocumentHandler doc;
universe@2:     
universe@2:     public ActionHandler(Field f) {
universe@2:         field = f;
universe@2:         solver = new Solver();
universe@5:         doc = new DocumentHandler();
universe@5:     }
universe@5:     
universe@5:     private boolean chooseSaveFilename() {
universe@6:         JFileChooser fc = new JFileChooser(".");
universe@6:         fc.setMultiSelectionEnabled(false);
universe@6:         if (fc.showSaveDialog(field) == JFileChooser.APPROVE_OPTION) {
universe@6:             File f = fc.getSelectedFile();
universe@6:             if (f.exists()) {
universe@6:                 int result = JOptionPane.showConfirmDialog(field,
universe@6:                         "Bereits existierende Datei überschreiben?", "Sudoku",
universe@6:                         JOptionPane.YES_NO_OPTION);
universe@6:                 if (result == JOptionPane.YES_OPTION) {
universe@6:                     doc.setFilename(f.getAbsolutePath());
universe@6:                     return true;
universe@6:                 } else {
universe@6:                     return false;
universe@6:                 }
universe@6:             } else {
universe@6:                 doc.setFilename(f.getAbsolutePath());
universe@6:                 return true;
universe@6:             }
universe@6:         } else {
universe@6:             return false;
universe@6:         }
universe@2:     }
universe@2:     
universe@6:     private void open() {
universe@6:         JFileChooser fc = new JFileChooser(".");
universe@6:         fc.setMultiSelectionEnabled(false);
universe@6:         if (fc.showOpenDialog(field) == JFileChooser.APPROVE_OPTION) {
universe@6:             File f = fc.getSelectedFile();
universe@6:             doc.setFilename(f.getAbsolutePath());
universe@6:             try {
universe@6:                 doc.load(field);
universe@6:             } catch (IOException e) {
universe@6:                 JOptionPane.showMessageDialog(field,
universe@6:                     "Datei konnte nicht geladen werden: "+e.getMessage(),
universe@6:                     "Sudoku", JOptionPane.ERROR_MESSAGE);
universe@6:             }
universe@6:         }
universe@6:     }
universe@6:     
universe@6:     private boolean save(boolean rename) {
universe@6:         if (!doc.isFilenameSet() || rename) {
universe@5:             if (!chooseSaveFilename()) {
universe@5:                 return false;
universe@5:             }
universe@5:         }
universe@2:         if (solver.check(field)) {
universe@2:             field.setAllCellsModified(false);
universe@6:             try {
universe@6:                 doc.save(field);
universe@6:             } catch (IOException e) {
universe@6:                 JOptionPane.showMessageDialog(field,
universe@6:                     "Datei konnte nicht gespeichert werden: "+e.getMessage(),
universe@6:                     "Sudoku", JOptionPane.ERROR_MESSAGE);
universe@6:             }
universe@3:             return true;
universe@2:         } else {
universe@2:             JOptionPane.showMessageDialog(field,
universe@2:                     "Das Feld kann mit Fehlern nicht gespeichert werden!",
universe@2:                     "Sudoku", JOptionPane.ERROR_MESSAGE);
universe@3:             return false;
universe@2:         }
universe@2:     }
universe@2:     
universe@2:     private void check() {
universe@2:         if (solver.check(field)) {
universe@2:             JOptionPane.showMessageDialog(field, "Überprüfung erfolgreich!",
universe@2:                     "Sudoku", JOptionPane.INFORMATION_MESSAGE);
universe@2:         } else {
universe@2:             JOptionPane.showMessageDialog(field, "Das Feld enthält Fehler!",
universe@2:                     "Sudoku", JOptionPane.WARNING_MESSAGE);
universe@2:         }
universe@2:     }
universe@2:     
universe@2:     private void solve() {
universe@7:         if (!solver.check(field) || !solver.solve(field)) {
universe@7:             JOptionPane.showMessageDialog(field, "Das Feld ist nicht lösbar!",
universe@7:                     "Sudoku", JOptionPane.WARNING_MESSAGE);
universe@7:         }
universe@2:     }
universe@4:     
universe@4:     private boolean saveUnsaved() {
universe@4:         boolean proceed = false;
universe@4:         if (field.isAnyCellModified()) {
universe@4:             int result = JOptionPane.showConfirmDialog(field,
universe@4:                     "Das Feld ist ungespeichert - jetzt speichern?",
universe@4:                     "Sudoku", JOptionPane.YES_NO_CANCEL_OPTION);
universe@4:             if (result == JOptionPane.YES_OPTION) {
universe@6:                 if (save(false)) {
universe@4:                     proceed = true;
universe@4:                 }
universe@4:             } else if (result == JOptionPane.NO_OPTION) {
universe@4:                 proceed = true;
universe@4:             }
universe@4:         } else {
universe@4:             proceed = true;
universe@4:         }
universe@4:         
universe@4:         return proceed;
universe@4:     }
universe@2: 
universe@2:     @Override
universe@2:     public void actionPerformed(ActionEvent e) {
universe@2:         switch (e.getActionCommand()) {
universe@4:         case NEW:
universe@4:             if (saveUnsaved()) {
universe@7:                 doc.clearFilename();
universe@4:                 field.clear();
universe@4:             }
universe@4:             break;
universe@6:         case OPEN:
universe@6:             open();
universe@6:             break;
universe@3:         case SAVE:
universe@6:             save(false);
universe@6:             break;
universe@6:         case SAVE_AS:
universe@6:             save(true);
universe@2:             break;
universe@3:         case CHECK:
universe@2:             check();
universe@2:             break;
universe@3:         case SOLVE:
universe@2:             solve();
universe@2:             break;
universe@3:         case QUIT:
universe@4:             if (saveUnsaved()) {
universe@3:                 System.exit(0);
universe@3:             }
universe@3:             break;
universe@3:         case ABOUT:
universe@3:             JOptionPane.showMessageDialog(field,
universe@3:                     "Sudoku - Copyright (c) 2013 Mike Becker\nwww.uap-core.de"+
universe@3:                     "\nPublished under the BSD License",
universe@3:                     "Sudoku", JOptionPane.INFORMATION_MESSAGE);
universe@3:             break;
universe@2:         default:
universe@2:             throw new UnsupportedOperationException(
universe@2:                     "unknown action: "+e.getActionCommand());
universe@2:         }
universe@2:     }
universe@2:     
universe@2: }