bug fix relating to file picker.

src/App.java

@@ -1,8 +1,10 @@
 import javax.swing.JFrame;
-import javax.swing.JPanel;
 import javax.swing.UIManager;
 
-import gui.Settings;
+import gui.Nav;
+import gui.Root;
+import gui.backend.Settings;
+import gui.backend.SudokuChecker;
 
 import java.awt.BorderLayout;
 import java.awt.Dimension;
@@ -16,7 +18,7 @@ public class App extends JFrame {
     private Nav nav;
 
     // Data fields
-    private Settings settings;
+    private Settings s;
     private SudokuChecker checker;
 
     /**
@@ -24,8 +26,8 @@ public class App extends JFrame {
      */
     public App() {
         super("Sudoku");
-        settings = new Settings();
+        s = new Settings();
-        nav = new Nav(settings, false);
+        nav = new Nav(s, false);
         initSetup();
         add(createApp());
     }
@@ -38,31 +40,37 @@ public class App extends JFrame {
         //       values from Settings.
         setDefaultCloseOperation(EXIT_ON_CLOSE);
         setLayout(new BorderLayout());
-        setPreferredSize(new Dimension(750, 550));
+        setPreferredSize(s.getDimension());
         setSize(getPreferredSize());
-        setResizable(false);
+        setResizable(s.getResizable());
         setLocationRelativeTo(null);
 
+        // Set the look and feel for the app to be cross-platform.
         try {
             UIManager.setLookAndFeel(
                 UIManager.getCrossPlatformLookAndFeelClassName()
             );
         } catch (Exception e) {
             System.out.println(
-                "Error with cross platform look/feel in frameSetup()."
+                "Error with cross platform look/feel in initSetup()."
             );
         }
     }
 
     /**
-     * Create the root JPanel holding all other GUI components.
+     * Create the Root JPanel for the Sudoku App. This will contain all other
+     * GUI components.
      * 
-     * @return JPanel
+     * Settings must be passed since, in the future, the user may be able to
+     * customize the layout of the app.
+     * 
+     * @param settings
+     * @return Root
      */
-    private JPanel createApp() {
+    private Root createApp() {
-        // TODO: Create the root JPanel holding all other GUI components.
+        Root root = new Root(s);
-        JPanel root = new JPanel();
             root.add(nav);
+
         return root;
     }
 

src/gui/Board.java

@@ -0,0 +1,38 @@
+package gui;
+
+import javax.swing.JPanel;
+
+import gui.backend.Settings;
+
+/**
+ * The Board class represents the Sudoku board in the GUI.
+ * 
+ * It contains all other related GUI components, and is the main JPanel for
+ * the board. Accessible information from the Board includes:
+ *      - the current state of the board, including filled values and notes;
+ *      - the current difficulty;
+ *      - the current time since the puzzle was started;
+ *      - the current hints available; and
+ *      - the current number of mistakes.
+ */
+public class Board extends JPanel {
+    private Settings s;
+
+    /**
+     * Create a new Board object with the default styling from settings.
+     * 
+     * @param s
+     */
+    public Board(Settings s) {
+        super();
+        this.s = s;
+        style();
+    }
+
+    /**
+     * Set up the Board Panel with the appropriate styling.
+     */
+    private void style() {
+        // TODO: Style the Board Panel.
+    }
+}

src/gui/Cell.java

@@ -1,3 +1,4 @@
+package gui;
 /**
  * A Cell represents a single cell in the Sudoku grid.
  * This helper class is used to store the row, column, value, and possible values for a cell.

src/gui/ComboBox.java

@@ -2,6 +2,8 @@ package gui;
 
 import javax.swing.JComboBox;
 
+import gui.backend.Settings;
+
 /**
  * A custom JComboBox with the appropriate styling for the Sudoku app.
  */

src/gui/FileChooser.java

@@ -2,6 +2,9 @@ package gui;
 
 import java.io.File;
 import javax.swing.filechooser.FileFilter;
+
+import gui.backend.Settings;
+
 import javax.swing.JFileChooser;
 
 /**

src/gui/Nav.java

@@ -1,14 +1,14 @@
+package gui;
 import java.util.Scanner;
 import java.io.File;
 import java.io.FileNotFoundException;
 
 import javax.swing.JPanel;
+
+import gui.backend.Settings;
+
 import javax.swing.JLabel;
 import javax.swing.JButton;
-
-import gui.ComboBox;
-import gui.FileChooser;
-import gui.Settings;
 /**
  * The Nav class represents the Navigation bar at the top of the JFrame window.
  *

src/gui/Root.java

@@ -0,0 +1,35 @@
+package gui;
+
+import javax.swing.JPanel;
+
+import gui.backend.Settings;
+
+/**
+ * The Root class represents the root JPanel for the Sudoku app.
+ * 
+ * It contains all other GUI components, and is the main JPanel for the app.
+ * To create a new Root object, a Settings object must be passed in for
+ * styling purposes.
+ */
+public class Root extends JPanel {
+    private Settings s;
+    
+    /**
+     * Create a new Root object with the default styling from settings.
+     * 
+     * @param s
+     */
+    public Root(Settings s) {
+        super();
+
+        this.s = s;
+        style();
+    }
+
+    /**
+     * Set up the Root Panel with the appropriate styling.
+     */
+    private void style() {
+        // TODO: Style the Root Panel.
+    }
+}

src/gui/backend/Settings.java

@@ -1,9 +1,10 @@
-package gui;
+package gui.backend;
 
 import java.io.File;
 import java.io.IOException;
 
 import java.awt.GraphicsEnvironment;
+import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.FontFormatException;
 
@@ -37,6 +38,12 @@ public class Settings {
     // The font to be used throughout the application.
     private Font font;
 
+    // The default dimension of the application window.
+    private Dimension dimension;
+
+    // Resizable setting
+    private boolean resizable;
+
     /**
      * Create a new Settings object, initializing the default settings
      * or reading in the settings from settings file if it exists.
@@ -137,6 +144,50 @@ public class Settings {
         updateSettingsFile();
     }
 
+    /**
+     * The default dimension of the application window.
+     * 
+     * The user can specify both the starting width and height of the app,
+     * and the app will remember the last used dimensions as well.
+     * 
+     * @return Dimension
+     */
+    public Dimension getDimension() {
+        return dimension;
+    }
+
+    /**
+     * Set the default dimension and write it to the settings file.
+     * 
+     * @param dimension
+     */
+    public void setDimension(Dimension dimension) {
+        this.dimension = dimension;
+        updateSettingsFile();
+    }
+
+    /**
+     * The resizable setting for the application window.
+     * 
+     * By default, the application window is not resizable and is considered
+     * an experimental feature. Dynamic layout is not yet supported.
+     * 
+     * @return boolean
+     */
+     public boolean getResizable() {
+        return resizable;
+     }
+
+     /**
+      * Set the resizable setting and write it to the settings file.
+      *
+      * @param resizable
+      */
+      public void setResizable(boolean resizable) {
+        this.resizable = resizable;
+        updateSettingsFile();
+      }
+
     /**
      * Open and write the settings to the settings file.
      * 
@@ -151,7 +202,13 @@ public class Settings {
      * settings file.
      */
     private void defaultSettings() {
+        // Setup the default directory for .sdku puzzle files.
         defaultDirectory = appDirectory + "puzzles";
+        File dir = new File(defaultDirectory);
+
+        if(!dir.exists() || !dir.isDirectory())
+            dir.mkdirs();
+
         newFileProperties = 0;
 
         // Load the font from the system directory.
@@ -162,6 +219,8 @@ public class Settings {
         else 
             font = new Font("Arial", Font.PLAIN, 12);
 
+        dimension = new Dimension(750, 550);
+        resizable = false;
         updateSettingsFile();
     }
 

src/gui/backend/SudokuChecker.java

@@ -1,5 +1,8 @@
+package gui.backend;
 import java.util.ArrayList;
 
+import gui.Cell;
+
 /**
  * The SudokuChecker class is responsible for calculating the solution to
  * a given Sudoku puzzle.

src/run.ps1

@@ -6,6 +6,7 @@ function Run {
     java App $flag
     rm *.class
     rm gui/*.class
+    rm gui/backend/*.class
 }
 
 if ($args.Length -eq 1) {

src/run.sh

@@ -2,6 +2,8 @@ run() {
     javac *.java
     java App $1
     rm *.class
+    rm gui/*.class
+    rm gui/backend/*.class
 }
 
 if($# -eq 1) then