Merge pull request 'Ajout de la fonctionnalité d'import/export de grille' (#2) from feature_filemanager into master

Reviewed-on: https://dwarves.iut-fbleau.fr/gitiut/souidi/SAE21_2022/pulls/2

src/FileManager.java

@@ -0,0 +1,105 @@
+import java.io.*;
+/**
+ * Class to manage file import/export
+ * @version 1.0
+ * @author Amir Daouadi
+ * @author Lyanis Souidi
+ */
+public class FileManager {
+    /**
+     * Import a grid from a file
+     * @param file The file to import
+     * @return The imported grid
+     * @throws Exception If an error occurs during the import
+     */
+    public static Grid importGrid(File file) throws Exception {
+        Grid grid;
+        try {
+            FileInputStream fs = new FileInputStream(file);
+            DataInputStream ds = new DataInputStream(fs);
+            try {
+                grid = new Grid(ds.readByte());
+                grid.getThesee().setSquare(grid.getSquare(ds.readByte(), ds.readByte()));
+                grid.getSquare(ds.readByte(), ds.readByte()).setExit();
+
+                int bit = 8;
+                byte value = 0;
+                for (int i = 0; i < grid.getSize(); i++) {
+                    for (int j = 0; j < grid.getSize(); j++) {
+                        if (bit == 8) {
+                            value = ds.readByte();
+                            bit = 0;
+                        }
+                        if (((value >> (7 - bit)) & 1) == 1) grid.getSquare(j, i).setWall();
+                        bit++;
+                    }
+                }
+                ds.close();
+            } catch (Exception e) {
+                throw new Exception("Une erreur est survenue lors de la lecture du fichier.");
+            }
+            return grid;
+        } catch (FileNotFoundException e){
+            throw new Exception("Fichier non trouvé.");
+        }
+    }
+
+    /**
+     * Export a grid to a file
+     * @param grid The grid to export
+     * @param file The file to export to
+     * @throws Exception If an error occurs during the export
+     */
+    public static void exportGrid(Grid grid, File file) throws Exception {
+        try {
+            FileOutputStream fs = new FileOutputStream(file);
+            DataOutputStream ds = new DataOutputStream(fs);
+            try {
+                // Écriture de la taille de la grille
+                ds.writeByte(grid.getSize());
+
+                // Écriture de la position de Thésée
+                Square theseeSquare = grid.getThesee().getSquare();
+                ds.writeByte(theseeSquare.getRow());
+                ds.writeByte(theseeSquare.getColumn());
+
+                // Écriture de la position de la sortie
+                for (int i = 0; i < grid.getSize(); i++) {
+                    for (int j = 0; j < grid.getSize(); j++) {
+                        Square square = grid.getSquare(i, j);
+                        if (square.isExit()) {
+                            ds.writeByte(square.getRow());
+                            ds.writeByte(square.getColumn());
+                            break;
+                        }
+                    }
+                }
+
+                // Écriture des murs
+                int bit = 0;
+                byte value = 0;
+                for (int i = 0; i < grid.getSize(); i++) {
+                    for (int j = 0; j < grid.getSize(); j++) {
+                        Square square = grid.getSquare(j, i);
+                        if (square.isWall()) {
+                            value |= 1 << (7 - bit);
+                        }
+                        bit++;
+                        if (bit == 8) {
+                            ds.writeByte(value);
+                            value = 0;
+                            bit = 0;
+                        }
+                    }
+                }
+                if (bit != 0) {
+                    ds.writeByte(value);
+                }
+            } catch (Exception e) {
+                throw new Exception("Une erreur est survenue lors de l'écriture du fichier.");
+            }
+        } catch (FileNotFoundException e){
+            throw new Exception("Fichier non trouvé.");
+        }
+    }
+}

src/HomeView.java

@@ -95,7 +95,7 @@ public class HomeView extends JPanel {
         return choisirGrille;
     }
 
-    private static JButton importerGrille(JFrame window) {
+    private static JButton importerGrille(Window window) {
         JPanel panel = new JPanel();
         JButton importerGrille = new JButton("Importer une grille");
         importerGrille.setPreferredSize(new Dimension(250, 50));
@@ -108,7 +108,14 @@ public class HomeView extends JPanel {
             int choix = fileChooser.showOpenDialog(panel);
             if (choix == JFileChooser.APPROVE_OPTION) {
                 File fichier = fileChooser.getSelectedFile();
-                // TODO: charger la grille depuis le fichier
+                try {
+                    GridView gridView = new GridView(window);
+                    new GridController(FileManager.importGrid(fichier), gridView);
+                    window.setContentPane(gridView);
+                    window.validate();
+                } catch (Exception ex) {
+                    JOptionPane.showMessageDialog(panel, ex.getMessage(), "Erreur", JOptionPane.ERROR_MESSAGE);
+                }
             }
         });
 

src/Square.java

@@ -34,6 +34,10 @@ public class Square {
         return this.type == 0;
     }
 
+    public boolean isThesee() {
+        return this.gridModel.getThesee().getSquare() == this;
+    }
+
     /**
      * Sets the current square as a wall
      */