src/classes/net/jankenpoi/sudokuki/ui/swing/OpenGridAction.java

   1 /*
   2  * Sudokuki - essential sudoku game
   3  * Copyright (C) 2007-2016 Sylvain Vedrenne
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 package net.jankenpoi.sudokuki.ui.swing;
  19
  20 import static net.jankenpoi.i18n.I18n.gtxt;
  21
  22 import java.awt.event.ActionEvent;
  23 import java.io.File;
  24 import java.io.FileInputStream;
  25 import java.io.FileNotFoundException;
  26 import java.io.IOException;
  27
  28 import javax.swing.AbstractAction;
  29 import javax.swing.JFileChooser;
  30 import javax.swing.JFrame;
  31 import javax.swing.JOptionPane;
  32 import javax.swing.filechooser.FileFilter;
  33
  34 import net.jankenpoi.sudokuki.model.GridModel;
  35 import net.jankenpoi.sudokuki.view.GridView;
  36
  37 @SuppressWarnings("serial")
  38 public class OpenGridAction extends AbstractAction {
  39
  40         private final GridView view;
  41
  42         private final JFrame frame;
  43
  44         OpenGridAction(JFrame frame, GridView view) {
  45                 this.frame = frame;
  46                 this.view = view;
  47         }
  48
  49         @Override
  50         public void actionPerformed(ActionEvent e) {
  51
  52                 final JFileChooser fc = new JFileChooser();
  53
  54                 fc.setDialogTitle(gtxt("Open grid..."));
  55                 fc.setAcceptAllFileFilterUsed(false);
  56                 fc.setFileFilter(new FileFilter() {
  57
  58                         public String getExtension(File f) {
  59                         String ext = null;
  60                         String s = f.getName();
  61                         int i = s.lastIndexOf('.');
  62
  63                         if (i > 0 &&  i < s.length() - 1) {
  64                             ext = s.substring(i+1).toLowerCase();
  65                         }
  66                         return ext;
  67                     }
  68
  69                         @Override
  70                         public String getDescription() {
  71                                 return gtxt("Sudokuki grid files");
  72                         }
  73
  74                         @Override
  75                         public boolean accept(File f) {
  76                                 String extension = getExtension(f);
  77                                 if (f.isDirectory() || "skg".equals(extension)) {
  78                                         return true;
  79                                 }
  80                                 return false;
  81                         }
  82                 });
  83                 int returnVal = fc.showOpenDialog(frame);
  84
  85                 if (returnVal != JFileChooser.APPROVE_OPTION) {
  86                         return;
  87                 }
  88                 File fileToOpen = fc.getSelectedFile();
  89                 if (fileToOpen == null) {
  90                         return;
  91                 }
  92                 FileInputStream fis = null;
  93                 try {
  94                         fis = new FileInputStream(fileToOpen);
  95                 } catch (FileNotFoundException e1) {
  96                 }
  97                 if (fis == null) {
  98             JOptionPane.showMessageDialog(frame, "<html>"
  99                     + "<table border=\"0\">" + "<tr>"
 100                     + "File not found:" + "</tr>"
 101                     + "<tr>" + fileToOpen + "</tr>"
 102                     + "</html>", "Sudokuki", JOptionPane.PLAIN_MESSAGE);
 103             return;
 104                 }
 105
 106                 short[] externalCellInfos = new short[81];
 107                 try {
 108                         for (int i = 0; i < 81; i++) {
 109                                 int lo = fis.read();
 110                                 int hi = fis.read();
 111                                 short together = (short) (hi << 8 | lo);
 112
 113                                 if ((together & ~(GridModel.FLAG_CELL_READ_ONLY
 114                                                 | GridModel.FLAG_GRID_COMPLETE
 115                                                 | GridModel.MASK_CELL_MEMOS | GridModel.MASK_CELL_VALUES)) != 0) {
 116                                         throw new IOException("Invalid cell info");
 117                                 }
 118                                 if (9 < (together & GridModel.MASK_CELL_VALUES)) {
 119                                         throw new IOException("Cell value out of range");
 120                                 }
 121                                 externalCellInfos[i] = together;
 122                         }
 123                         view.getController().notifyResetGridFromShorts(externalCellInfos);
 124                 } catch (IOException e1) {
 125                         JOptionPane.showMessageDialog(frame, "<html>"
 126                                         + "<table border=\"0\">" + "<tr>"
 127                                         + gtxt("This file is not a Sudokuki grid.") + "</tr>"
 128                                         + "</html>", "Sudokuki", JOptionPane.ERROR_MESSAGE);
 129                 } finally {
 130                         try {
 131                                 fis.close();
 132                         } catch (IOException e1) {
 133                                 System.err.println("An error occured upon FileInputStream close()");
 134                         }
 135                 }
 136         }
 137
 138 }